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2026-02-28 14:39:40 -05:00
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# OSpipe Cross-Platform Build Matrix
# Copy to .github/workflows/ospipe.yml to activate
name: OSpipe Build
on:
push:
paths: ['examples/OSpipe/**']
pull_request:
paths: ['examples/OSpipe/**']
jobs:
build:
strategy:
fail-fast: false
matrix:
include:
- os: macos-latest
target: aarch64-apple-darwin
name: macOS ARM64
- os: macos-13
target: x86_64-apple-darwin
name: macOS x64
- os: windows-latest
target: x86_64-pc-windows-msvc
name: Windows x64
- os: ubuntu-latest
target: x86_64-unknown-linux-gnu
name: Linux x64
- os: ubuntu-latest
target: wasm32-unknown-unknown
name: WASM
runs-on: ${{ matrix.os }}
name: ${{ matrix.name }}
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@stable
with:
targets: ${{ matrix.target }}
- name: Build
run: cargo build -p ospipe --target ${{ matrix.target }} --release
- name: Test
run: cargo test -p ospipe
if: matrix.target != 'wasm32-unknown-unknown'
- name: Upload artifact
uses: actions/upload-artifact@v4
if: matrix.target != 'wasm32-unknown-unknown'
with:
name: ospipe-${{ matrix.target }}
path: |
target/${{ matrix.target }}/release/libospipe*
target/${{ matrix.target }}/release/ospipe*
if-no-files-found: ignore
- name: Upload WASM artifact
uses: actions/upload-artifact@v4
if: matrix.target == 'wasm32-unknown-unknown'
with:
name: ospipe-wasm
path: target/wasm32-unknown-unknown/release/ospipe.wasm
if-no-files-found: ignore

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[package]
name = "ospipe"
version = "0.1.0"
edition = "2021"
rust-version = "1.77"
license = "MIT"
description = "OSpipe: RuVector-enhanced personal AI memory system integrating with Screenpipe"
authors = ["Ruvector Team"]
repository = "https://github.com/ruvnet/ruvector"
[dependencies]
# Serialization (cross-platform)
serde = { workspace = true }
serde_json = { workspace = true }
# Error handling and utilities (cross-platform)
thiserror = { workspace = true }
tracing = { workspace = true }
# Time and UUID (cross-platform)
chrono = { version = "0.4", features = ["serde"] }
uuid = { version = "1.11", features = ["v4", "serde", "js"] }
# Math (cross-platform)
rand = { workspace = true }
# Native-only: RuVector ecosystem (path dependencies)
# These crates pull in platform-specific code (mmap, tokio, ring, etc.) that
# does not compile for wasm32-unknown-unknown.
[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
ruvector-core = { version = "2.0", path = "../../crates/ruvector-core" }
ruvector-filter = { version = "2.0", path = "../../crates/ruvector-filter" }
ruvector-cluster = { version = "2.0", path = "../../crates/ruvector-cluster" }
ruvector-delta-core = { version = "0.1", path = "../../crates/ruvector-delta-core", features = ["serde"] }
ruvector-router-core = { version = "2.0", path = "../../crates/ruvector-router-core" }
ruvector-graph = { version = "2.0", path = "../../crates/ruvector-graph", default-features = false }
ruvector-gnn = { version = "2.0", path = "../../crates/ruvector-gnn", default-features = false }
cognitum-gate-kernel = { version = "0.1", path = "../../crates/cognitum-gate-kernel", default-features = true }
ruqu-algorithms = { version = "2.0.5", path = "../../crates/ruqu-algorithms", default-features = false }
ruvector-attention = { version = "2.0", path = "../../crates/ruvector-attention", default-features = false }
# HTTP server dependencies (native only)
axum = { version = "0.7", features = ["json"] }
tower-http = { version = "0.6", features = ["cors"] }
tower = { version = "0.5" }
tokio = { workspace = true }
tracing-subscriber = { version = "0.3", features = ["env-filter"] }
# WASM-only dependencies
[target.'cfg(target_arch = "wasm32")'.dependencies]
wasm-bindgen = { workspace = true }
js-sys = { workspace = true }
serde-wasm-bindgen = "0.6"
getrandom = { version = "0.2", features = ["js"] }
console_error_panic_hook = { version = "0.1", optional = true }
[target.'cfg(target_arch = "wasm32")'.dev-dependencies]
wasm-bindgen-test = "0.3"
[dev-dependencies]
tokio = { workspace = true }
uuid = { version = "1.11", features = ["v4"] }
[features]
default = ["console_error_panic_hook"]
[lib]
crate-type = ["cdylib", "rlib"]
[[bin]]
name = "ospipe-server"
path = "src/bin/ospipe-server.rs"
required-features = []

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# OSpipe
**RuVector-enhanced personal AI memory for Screenpipe**
[![Crates.io](https://img.shields.io/crates/v/ospipe)](https://crates.io/crates/ospipe)
[![docs.rs](https://img.shields.io/docsrs/ospipe)](https://docs.rs/ospipe)
[![License: MIT](https://img.shields.io/badge/license-MIT%2FApache--2.0-blue)](LICENSE)
[![Rust](https://img.shields.io/badge/rust-1.77%2B-orange)](https://www.rust-lang.org/)
[![WASM](https://img.shields.io/badge/wasm-compatible-brightgreen)](https://webassembly.org/)
---
## What is OSpipe?
[Screenpipe](https://github.com/mediar-ai/screenpipe) is an open-source desktop application that continuously records your screen, audio, and UI interactions locally. It builds a searchable timeline of everything you see, hear, and do on your computer. Out of the box, Screenpipe stores its data in SQLite with FTS5 full-text indexing -- effective for keyword lookups, but limited to literal string matching. If you search for "auth discussion," you will not find a frame that says "we talked about login security."
OSpipe replaces Screenpipe's storage and search backend with the [RuVector](https://github.com/ruvnet/ruvector) ecosystem -- a collection of 70+ Rust crates providing HNSW vector search, graph neural networks, attention mechanisms, delta-change tracking, and more. Instead of keyword matching, OSpipe embeds every captured frame into a high-dimensional vector space and performs approximate nearest neighbor search, delivering true semantic recall. A query like "what was that API we discussed in standup?" will surface the relevant audio transcription even if those exact words never appeared.
Everything stays local and private. OSpipe processes all data on-device with no cloud dependency. The safety gate automatically detects and redacts PII -- credit card numbers, Social Security numbers, and email addresses -- before content ever reaches the vector store. A cosine-similarity deduplication window prevents consecutive identical frames (like a static desktop) from bloating storage. Age-based quantization progressively compresses older embeddings from 32-bit floats down to 1-bit binary, cutting long-term memory usage by 97%.
OSpipe ships as a Rust crate, a TypeScript SDK, and a WASM library. It runs natively on Windows, macOS, and Linux, and can run entirely in the browser via WebAssembly at bundles as small as 11.8KB.
**Ask your computer what you saw, heard, and did -- with semantic understanding.**
---
## Features
- **Semantic Vector Search** -- HNSW index via `ruvector-core` with 61us p50 query latency
- **PII Safety Gate** -- automatic redaction of credit card numbers, SSNs, and email addresses before storage
- **Frame Deduplication** -- cosine similarity sliding window eliminates near-duplicate captures
- **Hybrid Search** -- weighted combination of semantic vector similarity and keyword term overlap
- **Query Router** -- automatically routes queries to the optimal backend (Semantic, Keyword, Graph, Temporal, or Hybrid)
- **WASM Support** -- runs entirely in the browser with bundles from 11.8KB (micro) to 350KB (full)
- **TypeScript SDK** -- `@ruvector/ospipe` for Node.js and browser integration
- **Configurable Quantization** -- 4-tier age-based compression: f32 -> int8 -> product -> binary
- **Cross-Platform** -- native builds for Windows, macOS, Linux; WASM for browsers
---
## Architecture
```
OSpipe Ingestion Pipeline
=========================
Screenpipe -----> Capture -----> Safety Gate -----> Dedup -----> Embed -----> VectorStore
(Screen/Audio/UI) (CapturedFrame) (PII Redaction) (Cosine Window) (HNSW) |
|
Search Router <------------+
| | | | |
Semantic Keyword Graph Temporal Hybrid
```
Frames flow left to right through the ingestion pipeline. Each captured frame passes through:
1. **Safety Gate** -- PII detection and redaction; content may be allowed, redacted, or denied
2. **Deduplication** -- cosine similarity check against a sliding window of recent embeddings
3. **Embedding** -- text content is encoded into a normalized vector
4. **Vector Store** -- the embedding is indexed for approximate nearest neighbor retrieval
Queries enter through the **Search Router**, which analyzes the query string and dispatches to the optimal backend.
---
## Quick Start
### Rust
Add OSpipe to your `Cargo.toml`:
```toml
[dependencies]
ospipe = { path = "examples/OSpipe" }
```
Create a pipeline, ingest frames, and search:
```rust
use ospipe::config::OsPipeConfig;
use ospipe::pipeline::ingestion::IngestionPipeline;
use ospipe::capture::{CapturedFrame, CaptureSource, FrameContent, FrameMetadata};
fn main() -> ospipe::error::Result<()> {
// Initialize with default configuration
let config = OsPipeConfig::default();
let mut pipeline = IngestionPipeline::new(config)?;
// Ingest a screen capture
let frame = CapturedFrame::new_screen(
"Firefox",
"Meeting Notes - Google Docs",
"Discussion about authentication: we decided to use JWT with refresh tokens",
0,
);
let result = pipeline.ingest(frame)?;
println!("Ingest result: {:?}", result);
// Ingest an audio transcription
let audio = CapturedFrame::new_audio(
"Built-in Microphone",
"Let's revisit the login flow next sprint",
Some("Alice"),
);
pipeline.ingest(audio)?;
// Search semantically
let query_embedding = pipeline.embedding_engine().embed("auth token discussion");
let results = pipeline.vector_store().search(&query_embedding, 5)?;
for hit in &results {
println!("Score: {:.4} | {:?}", hit.score, hit.metadata);
}
// Print pipeline statistics
let stats = pipeline.stats();
println!(
"Ingested: {} | Deduped: {} | Denied: {} | Redacted: {}",
stats.total_ingested, stats.total_deduplicated,
stats.total_denied, stats.total_redacted
);
Ok(())
}
```
### TypeScript
```typescript
import { OsPipe } from "@ruvector/ospipe";
const client = new OsPipe({ baseUrl: "http://localhost:3030" });
// Ingest a captured frame
await client.ingest({
source: "screen",
app: "Chrome",
window: "Jira Board",
content: "Sprint 14 planning: migrate auth to OAuth2",
});
// Semantic search
const results = await client.queryRuVector(
"what did I discuss in the meeting about authentication?"
);
for (const hit of results) {
console.log(`[${hit.score.toFixed(3)}] ${hit.metadata.text}`);
}
```
### WASM (Browser)
```javascript
import { OsPipeWasm } from "@ruvector/ospipe-wasm";
// Initialize with 384-dimensional embeddings
const pipe = new OsPipeWasm(384);
// Embed and insert content
const embedding = pipe.embed_text("meeting notes about auth migration to OAuth2");
pipe.insert("frame-001", embedding, '{"app":"Chrome","window":"Jira"}', Date.now());
// Embed a query and search
const queryEmbedding = pipe.embed_text("what was the auth discussion about?");
const results = pipe.search(queryEmbedding, 5);
console.log("Results:", results);
// Safety check before storage
const safety = pipe.safety_check("my card is 4111-1111-1111-1111");
console.log("Safety:", safety); // "deny"
// Query routing
const route = pipe.route_query("what happened yesterday?");
console.log("Route:", route); // "Temporal"
// Pipeline statistics
console.log("Stats:", pipe.stats());
```
---
## Comparison: Screenpipe vs OSpipe
| Feature | Screenpipe (FTS5) | OSpipe (RuVector) |
|---|---|---|
| Search Type | Keyword (FTS5) | Semantic + Keyword + Graph + Temporal |
| Search Latency | ~1ms (FTS5) | 61us (HNSW p50) |
| Content Relations | None | Knowledge Graph (Cypher) |
| Temporal Analysis | Basic SQL | Delta-behavior tracking |
| PII Protection | Basic | Credit card, SSN, email redaction |
| Deduplication | None | Cosine similarity sliding window |
| Browser Support | None | WASM (11.8KB - 350KB) |
| Quantization | None | 4-tier age-based (f32 -> binary) |
| Privacy | Local-first | Local-first + PII redaction |
| Query Routing | None | Auto-routes to optimal backend |
| Hybrid Search | None | Weighted semantic + keyword fusion |
| Metadata Filtering | SQL WHERE | App, time range, content type, monitor |
---
## RuVector Crate Integration
| RuVector Crate | OSpipe Usage | Status |
|---|---|---|
| `ruvector-core` | HNSW vector storage and nearest neighbor search | Integrated |
| `ruvector-filter` | Metadata filtering (app, time, content type) | Integrated |
| `ruvector-cluster` | Frame deduplication via cosine similarity | Integrated |
| `ruvector-delta-core` | Change tracking and delta-behavior analysis | Integrated |
| `ruvector-router-core` | Query routing to optimal search backend | Integrated |
| `cognitum-gate-kernel` | AI safety gate decisions (allow/redact/deny) | Integrated |
| `ruvector-graph` | Knowledge graph for entity relationships | Phase 2 |
| `ruvector-attention` | Content prioritization and relevance weighting | Phase 3 |
| `ruvector-gnn` | Learned search improvement via graph neural nets | Phase 3 |
| `ruqu-algorithms` | Quantum-inspired search acceleration | Phase 4 |
---
## Configuration
<details>
<summary>Full Configuration Reference</summary>
### `OsPipeConfig`
Top-level configuration with nested subsystem configs. All fields have sensible defaults.
```rust
use ospipe::config::OsPipeConfig;
let config = OsPipeConfig::default();
// config.data_dir = "~/.ospipe"
// config.capture = CaptureConfig { ... }
// config.storage = StorageConfig { ... }
// config.search = SearchConfig { ... }
// config.safety = SafetyConfig { ... }
```
### `CaptureConfig`
| Field | Type | Default | Description |
|---|---|---|---|
| `fps` | `f32` | `1.0` | Frames per second for screen capture |
| `audio_chunk_secs` | `u32` | `30` | Duration of audio chunks in seconds |
| `excluded_apps` | `Vec<String>` | `["1Password", "Keychain Access"]` | Applications excluded from capture |
| `skip_private_windows` | `bool` | `true` | Skip windows marked as private/incognito |
### `StorageConfig`
| Field | Type | Default | Description |
|---|---|---|---|
| `embedding_dim` | `usize` | `384` | Dimensionality of embedding vectors |
| `hnsw_m` | `usize` | `32` | HNSW M parameter (max connections per layer) |
| `hnsw_ef_construction` | `usize` | `200` | HNSW ef_construction (index build quality) |
| `hnsw_ef_search` | `usize` | `100` | HNSW ef_search (query-time accuracy) |
| `dedup_threshold` | `f32` | `0.95` | Cosine similarity threshold for deduplication |
| `quantization_tiers` | `Vec<QuantizationTier>` | 4 tiers (see below) | Age-based quantization schedule |
### `SearchConfig`
| Field | Type | Default | Description |
|---|---|---|---|
| `default_k` | `usize` | `10` | Default number of results to return |
| `hybrid_weight` | `f32` | `0.7` | Semantic vs keyword weight (1.0 = pure semantic, 0.0 = pure keyword) |
| `mmr_lambda` | `f32` | `0.5` | MMR diversity vs relevance tradeoff |
| `rerank_enabled` | `bool` | `false` | Whether to enable result reranking |
### `SafetyConfig`
| Field | Type | Default | Description |
|---|---|---|---|
| `pii_detection` | `bool` | `true` | Enable PII detection (emails) |
| `credit_card_redaction` | `bool` | `true` | Enable credit card number redaction |
| `ssn_redaction` | `bool` | `true` | Enable SSN redaction |
| `custom_patterns` | `Vec<String>` | `[]` | Custom substring patterns that trigger denial |
### Example: Custom Configuration
```rust
use ospipe::config::*;
use std::path::PathBuf;
let config = OsPipeConfig {
data_dir: PathBuf::from("/var/lib/ospipe"),
capture: CaptureConfig {
fps: 0.5,
audio_chunk_secs: 60,
excluded_apps: vec![
"1Password".into(),
"Signal".into(),
"Bitwarden".into(),
],
skip_private_windows: true,
},
storage: StorageConfig {
embedding_dim: 768, // Use a larger model
hnsw_m: 48, // More connections for better recall
hnsw_ef_construction: 400,
hnsw_ef_search: 200,
dedup_threshold: 0.98, // Stricter deduplication
..Default::default()
},
search: SearchConfig {
default_k: 20,
hybrid_weight: 0.8, // Lean more toward semantic
mmr_lambda: 0.6,
rerank_enabled: true,
},
safety: SafetyConfig {
pii_detection: true,
credit_card_redaction: true,
ssn_redaction: true,
custom_patterns: vec![
"INTERNAL_ONLY".into(),
"CONFIDENTIAL".into(),
],
},
};
```
</details>
---
## Safety Gate
<details>
<summary>PII Detection Details</summary>
The safety gate inspects all captured content before it enters the ingestion pipeline. It operates in three modes:
### Safety Decisions
| Decision | Behavior | When |
|---|---|---|
| `Allow` | Content stored as-is | No sensitive patterns detected |
| `AllowRedacted(String)` | Content stored with PII replaced by tokens | PII detected, redaction enabled |
| `Deny { reason }` | Content rejected, not stored | Custom deny pattern matched |
### Detected PII Patterns
**Credit Cards** -- sequences of 13-16 digits (with optional spaces or dashes):
```
4111111111111111 -> [CC_REDACTED]
4111 1111 1111 1111 -> [CC_REDACTED]
4111-1111-1111-1111 -> [CC_REDACTED]
```
**Social Security Numbers** -- XXX-XX-XXXX format:
```
123-45-6789 -> [SSN_REDACTED]
```
**Email Addresses** -- word@domain.tld patterns:
```
user@example.com -> [EMAIL_REDACTED]
admin@company.org -> [EMAIL_REDACTED]
```
**Custom Patterns** -- configurable substring deny list. When a custom pattern is matched, the entire frame is denied (not just redacted):
```rust
let config = SafetyConfig {
custom_patterns: vec!["TOP_SECRET".to_string(), "CLASSIFIED".to_string()],
..Default::default()
};
```
### WASM Safety API
The WASM bindings expose a simplified safety classifier:
```javascript
pipe.safety_check("my card is 4111-1111-1111-1111"); // "deny"
pipe.safety_check("set password to foo123"); // "redact"
pipe.safety_check("the weather is nice today"); // "allow"
```
The WASM classifier also detects sensitive keywords: `password`, `secret`, `api_key`, `api-key`, `apikey`, `token`, `private_key`, `private-key`.
</details>
---
## Advanced Configuration
<details>
<summary>WASM Deployment</summary>
### Bundle Tiers
OSpipe provides four WASM bundle sizes depending on which features you need:
| Tier | Size | Features |
|---|---|---|
| **Micro** | 11.8KB | Embedding + vector search only |
| **Standard** | 225KB | Full pipeline (embed, insert, search, filtered search) |
| **Full** | 350KB | + deduplication + safety gate + query routing |
| **AI** | 2.5MB | + on-device neural inference (ONNX) |
### Web Worker Setup
For best performance, run OSpipe in a Web Worker to avoid blocking the main thread:
```javascript
// worker.js
import { OsPipeWasm } from "@ruvector/ospipe-wasm";
const pipe = new OsPipeWasm(384);
self.onmessage = (event) => {
const { type, payload } = event.data;
switch (type) {
case "insert":
const emb = pipe.embed_text(payload.text);
pipe.insert(payload.id, emb, JSON.stringify(payload.metadata), Date.now());
self.postMessage({ type: "inserted", id: payload.id });
break;
case "search":
const queryEmb = pipe.embed_text(payload.query);
const results = pipe.search(queryEmb, payload.k || 10);
self.postMessage({ type: "results", data: results });
break;
}
};
```
### SharedArrayBuffer
For multi-threaded WASM (e.g., parallel batch embedding), set the required headers:
```
Cross-Origin-Opener-Policy: same-origin
Cross-Origin-Embedder-Policy: require-corp
```
</details>
<details>
<summary>Cross-Platform Build</summary>
### Build Targets
```bash
# Native (current platform)
cargo build -p ospipe --release
# WASM (browser)
cargo build -p ospipe --target wasm32-unknown-unknown --release
# Generate JS bindings
wasm-pack build examples/OSpipe --target web --release
# Windows (cross-compile)
cross build -p ospipe --target x86_64-pc-windows-gnu --release
# macOS ARM (cross-compile)
cross build -p ospipe --target aarch64-apple-darwin --release
# macOS Intel (cross-compile)
cross build -p ospipe --target x86_64-apple-darwin --release
# Linux ARM (cross-compile)
cross build -p ospipe --target aarch64-unknown-linux-gnu --release
```
### Conditional Compilation
OSpipe uses conditional compilation to separate native and WASM dependencies:
- **Native** (`cfg(not(target_arch = "wasm32"))`) -- links against `ruvector-core`, `ruvector-filter`, `ruvector-cluster`, `ruvector-delta-core`, `ruvector-router-core`, and `cognitum-gate-kernel`
- **WASM** (`cfg(target_arch = "wasm32")`) -- uses `wasm-bindgen`, `js-sys`, `serde-wasm-bindgen`, and `getrandom` with the `js` feature
The `src/wasm/helpers.rs` module contains pure Rust functions (cosine similarity, hash embedding, safety classification, query routing) that compile on all targets and are tested natively.
</details>
<details>
<summary>Quantization Tiers</summary>
OSpipe progressively compresses older embeddings to reduce long-term storage costs. The default quantization schedule:
| Age | Method | Bits/Dim | Memory vs f32 | Description |
|---|---|---|---|---|
| 0 hours | None (f32) | 32 | 100% | Full precision for recent content |
| 24 hours | Scalar (int8) | 8 | 25% | Minimal quality loss, 4x compression |
| 1 week | Product | ~2 | ~6% | Codebook-based compression |
| 30 days | Binary | 1 | 3% | Single bit per dimension, 97% savings |
### Custom Tiers
```rust
use ospipe::config::{StorageConfig, QuantizationTier, QuantizationMethod};
let storage = StorageConfig {
quantization_tiers: vec![
QuantizationTier { age_hours: 0, method: QuantizationMethod::None },
QuantizationTier { age_hours: 12, method: QuantizationMethod::Scalar },
QuantizationTier { age_hours: 72, method: QuantizationMethod::Product },
QuantizationTier { age_hours: 360, method: QuantizationMethod::Binary },
],
..Default::default()
};
```
### Memory Estimate
For 1 million frames at 384 dimensions:
| Tier | Bytes/Vector | Total (1M vectors) |
|---|---|---|
| f32 | 1,536 | 1.43 GB |
| int8 | 384 | 366 MB |
| Product | ~96 | ~91 MB |
| Binary | 48 | 46 MB |
With the default age distribution (most content aging past 30 days), long-term average storage is approximately 50-80 MB per million frames.
</details>
---
## API Reference
### Rust API
#### Core Types
| Type | Module | Description |
|---|---|---|
| `OsPipeConfig` | `config` | Top-level configuration |
| `CaptureConfig` | `config` | Capture subsystem settings |
| `StorageConfig` | `config` | HNSW and quantization settings |
| `SearchConfig` | `config` | Search weights and defaults |
| `SafetyConfig` | `config` | PII detection toggles |
| `CapturedFrame` | `capture` | A captured screen/audio/UI frame |
| `CaptureSource` | `capture` | Source enum: `Screen`, `Audio`, `Ui` |
| `FrameContent` | `capture` | Content enum: `OcrText`, `Transcription`, `UiEvent` |
| `FrameMetadata` | `capture` | Metadata (app, window, monitor, confidence, language) |
| `OsPipeError` | `error` | Unified error type |
#### Pipeline
| Type / Function | Module | Description |
|---|---|---|
| `IngestionPipeline::new(config)` | `pipeline::ingestion` | Create a new pipeline |
| `IngestionPipeline::ingest(frame)` | `pipeline::ingestion` | Ingest a single frame |
| `IngestionPipeline::ingest_batch(frames)` | `pipeline::ingestion` | Ingest multiple frames |
| `IngestionPipeline::stats()` | `pipeline::ingestion` | Get ingestion statistics |
| `IngestResult` | `pipeline::ingestion` | Enum: `Stored`, `Deduplicated`, `Denied` |
| `PipelineStats` | `pipeline::ingestion` | Counters for ingested/deduped/denied/redacted |
| `FrameDeduplicator` | `pipeline::dedup` | Cosine similarity sliding window |
#### Storage
| Type / Function | Module | Description |
|---|---|---|
| `VectorStore::new(config)` | `storage::vector_store` | Create a new vector store |
| `VectorStore::insert(frame, embedding)` | `storage::vector_store` | Insert a frame with its embedding |
| `VectorStore::search(query, k)` | `storage::vector_store` | Top-k nearest neighbor search |
| `VectorStore::search_filtered(query, k, filter)` | `storage::vector_store` | Search with metadata filters |
| `SearchResult` | `storage::vector_store` | Result with id, score, metadata |
| `SearchFilter` | `storage::vector_store` | Filter by app, time range, content type, monitor |
| `StoredEmbedding` | `storage::vector_store` | Stored vector with metadata and timestamp |
| `EmbeddingEngine::new(dim)` | `storage::embedding` | Create an embedding engine |
| `EmbeddingEngine::embed(text)` | `storage::embedding` | Generate a normalized embedding |
| `EmbeddingEngine::batch_embed(texts)` | `storage::embedding` | Batch embedding generation |
| `cosine_similarity(a, b)` | `storage::embedding` | Cosine similarity between two vectors |
#### Search
| Type / Function | Module | Description |
|---|---|---|
| `QueryRouter::new()` | `search::router` | Create a query router |
| `QueryRouter::route(query)` | `search::router` | Route a query to optimal backend |
| `QueryRoute` | `search::router` | Enum: `Semantic`, `Keyword`, `Graph`, `Temporal`, `Hybrid` |
| `HybridSearch::new(weight)` | `search::hybrid` | Create a hybrid search with semantic weight |
| `HybridSearch::search(store, query, emb, k)` | `search::hybrid` | Combined semantic + keyword search |
#### Safety
| Type / Function | Module | Description |
|---|---|---|
| `SafetyGate::new(config)` | `safety` | Create a safety gate |
| `SafetyGate::check(content)` | `safety` | Check content, return safety decision |
| `SafetyGate::redact(content)` | `safety` | Redact and return cleaned content |
| `SafetyDecision` | `safety` | Enum: `Allow`, `AllowRedacted(String)`, `Deny { reason }` |
### WASM API (`OsPipeWasm`)
| Method | Parameters | Returns | Description |
|---|---|---|---|
| `new(dimension)` | `usize` | `OsPipeWasm` | Constructor |
| `insert(id, embedding, metadata, timestamp)` | `&str, &[f32], &str, f64` | `Result<(), JsValue>` | Insert a frame |
| `search(query_embedding, k)` | `&[f32], usize` | `JsValue` (JSON array) | Semantic search |
| `search_filtered(query_embedding, k, start, end)` | `&[f32], usize, f64, f64` | `JsValue` (JSON array) | Time-filtered search |
| `is_duplicate(embedding, threshold)` | `&[f32], f32` | `bool` | Deduplication check |
| `embed_text(text)` | `&str` | `Vec<f32>` | Hash-based text embedding |
| `batch_embed(texts)` | `JsValue` (Array) | `JsValue` (Array) | Batch text embedding |
| `safety_check(content)` | `&str` | `String` | Returns "allow", "redact", or "deny" |
| `route_query(query)` | `&str` | `String` | Returns "Semantic", "Keyword", "Graph", or "Temporal" |
| `len()` | -- | `usize` | Number of stored embeddings |
| `stats()` | -- | `String` (JSON) | Pipeline statistics |
---
## Testing
```bash
# Run all 56 tests
cargo test -p ospipe
# Run with verbose output
cargo test -p ospipe -- --nocapture
# Run only integration tests
cargo test -p ospipe --test integration
# Run only unit tests (embedding, WASM helpers)
cargo test -p ospipe --lib
# Build for WASM (verify compilation)
cargo build -p ospipe --target wasm32-unknown-unknown
# Build with wasm-pack for JS bindings
wasm-pack build examples/OSpipe --target web
```
### Test Coverage
| Test Category | Count | Module |
|---|---|---|
| Configuration | 2 | `tests/integration.rs` |
| Capture frames | 3 | `tests/integration.rs` |
| Embedding engine | 6 | `src/storage/embedding.rs` |
| Vector store | 4 | `tests/integration.rs` |
| Deduplication | 2 | `tests/integration.rs` |
| Safety gate | 6 | `tests/integration.rs` |
| Query routing | 4 | `tests/integration.rs` |
| Hybrid search | 2 | `tests/integration.rs` |
| Ingestion pipeline | 5 | `tests/integration.rs` |
| Cosine similarity | 3 | `tests/integration.rs` |
| WASM helpers | 18 | `src/wasm/helpers.rs` |
| **Total** | **56** | |
---
## Related
- [ADR: OSpipe Screenpipe Integration](./ADR-OSpipe-screenpipe-integration.md) -- Architecture Decision Record with full design rationale
- [Screenpipe](https://github.com/mediar-ai/screenpipe) -- Open-source local-first desktop recording + AI memory
- [RuVector](https://github.com/ruvnet/ruvector) -- 70+ Rust crates for vector search, graph neural networks, and attention mechanisms
- `@ruvector/ospipe` -- TypeScript SDK (npm)
- `@ruvector/ospipe-wasm` -- WASM package (npm)
---
## License
Licensed under either of:
- MIT License ([LICENSE-MIT](../../LICENSE-MIT) or http://opensource.org/licenses/MIT)
- Apache License, Version 2.0 ([LICENSE-APACHE](../../LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
at your option.

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4f4c747c3a363e7f41c50ec065b316afff5c26a0daf62aabedfc4285e4206131 ospipe-server-linux-arm64
f9627349e486a0a57e55299dd254dda09f4032c1b82270f15c37d56c404dfc57 ospipe-server-linux-x86_64
5a14e46829bb6e8395d43bbc9ed1d485af3db726e3e75e6f86844d655b2f70e9 ospipe-server-windows-x86_64.exe

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//! OSpipe REST API server binary.
//!
//! Starts the OSpipe HTTP server with a default pipeline configuration.
//! The server exposes semantic search, query routing, health, and stats endpoints.
//!
//! ## Usage
//!
//! ```bash
//! ospipe-server # default port 3030
//! ospipe-server --port 8080 # custom port
//! ospipe-server --data-dir /tmp/ospipe # custom data directory
//! ```
use std::sync::Arc;
use tokio::sync::RwLock;
fn main() {
// Parse CLI arguments
let args: Vec<String> = std::env::args().collect();
let mut port: u16 = 3030;
let mut data_dir: Option<String> = None;
let mut i = 1;
while i < args.len() {
match args[i].as_str() {
"--port" | "-p" => {
if i + 1 < args.len() {
port = args[i + 1].parse().unwrap_or_else(|_| {
eprintln!("Invalid port: {}", args[i + 1]);
std::process::exit(1);
});
i += 2;
} else {
eprintln!("--port requires a value");
std::process::exit(1);
}
}
"--data-dir" | "-d" => {
if i + 1 < args.len() {
data_dir = Some(args[i + 1].clone());
i += 2;
} else {
eprintln!("--data-dir requires a value");
std::process::exit(1);
}
}
"--help" | "-h" => {
println!("OSpipe Server - RuVector-enhanced personal AI memory");
println!();
println!("Usage: ospipe-server [OPTIONS]");
println!();
println!("Options:");
println!(" -p, --port <PORT> Listen port (default: 3030)");
println!(" -d, --data-dir <PATH> Data directory (default: ~/.ospipe)");
println!(" -h, --help Show this help message");
println!(" -V, --version Show version");
std::process::exit(0);
}
"--version" | "-V" => {
println!("ospipe-server {}", env!("CARGO_PKG_VERSION"));
std::process::exit(0);
}
other => {
eprintln!("Unknown argument: {}", other);
eprintln!("Run with --help for usage information");
std::process::exit(1);
}
}
}
// Initialize tracing
tracing_subscriber::fmt()
.with_env_filter(
tracing_subscriber::EnvFilter::try_from_default_env()
.unwrap_or_else(|_| tracing_subscriber::EnvFilter::new("info")),
)
.init();
// Build configuration
let mut config = ospipe::config::OsPipeConfig::default();
if let Some(dir) = data_dir {
config.data_dir = std::path::PathBuf::from(dir);
}
// Create the pipeline
let pipeline =
ospipe::pipeline::ingestion::IngestionPipeline::new(config).unwrap_or_else(|e| {
eprintln!("Failed to initialize pipeline: {}", e);
std::process::exit(1);
});
let state = ospipe::server::ServerState {
pipeline: Arc::new(RwLock::new(pipeline)),
router: Arc::new(ospipe::search::QueryRouter::new()),
started_at: std::time::Instant::now(),
};
// Start the async runtime and server
let rt = tokio::runtime::Runtime::new().unwrap_or_else(|e| {
eprintln!("Failed to create Tokio runtime: {}", e);
std::process::exit(1);
});
rt.block_on(async {
tracing::info!("Starting OSpipe server on port {}", port);
if let Err(e) = ospipe::server::start_server(state, port).await {
eprintln!("Server error: {}", e);
std::process::exit(1);
}
});
}

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//! Captured frame data structures.
use chrono::{DateTime, Utc};
use serde::{Deserialize, Serialize};
use uuid::Uuid;
/// A single captured frame from any Screenpipe source.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CapturedFrame {
/// Unique identifier for this frame.
pub id: Uuid,
/// When this frame was captured.
pub timestamp: DateTime<Utc>,
/// The source that produced this frame.
pub source: CaptureSource,
/// The actual content of the frame.
pub content: FrameContent,
/// Additional metadata about the frame.
pub metadata: FrameMetadata,
}
/// The source that produced a captured frame.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum CaptureSource {
/// Screen capture with OCR.
Screen {
/// Monitor index.
monitor: u32,
/// Foreground application name.
app: String,
/// Window title.
window: String,
},
/// Audio capture with transcription.
Audio {
/// Audio device name.
device: String,
/// Detected speaker (if diarization is available).
speaker: Option<String>,
},
/// UI accessibility event.
Ui {
/// Type of UI event (e.g., "click", "focus", "scroll").
event_type: String,
},
}
/// The actual content extracted from a captured frame.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum FrameContent {
/// OCR text extracted from a screen capture.
OcrText(String),
/// Transcribed text from an audio capture.
Transcription(String),
/// A UI accessibility event description.
UiEvent(String),
}
/// Metadata associated with a captured frame.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct FrameMetadata {
/// Name of the foreground application, if known.
pub app_name: Option<String>,
/// Title of the active window, if known.
pub window_title: Option<String>,
/// Monitor index, if applicable.
pub monitor_id: Option<u32>,
/// Confidence score for the extracted content (0.0 to 1.0).
pub confidence: f32,
/// Detected language code (e.g., "en", "es"), if known.
pub language: Option<String>,
}
impl CapturedFrame {
/// Create a new frame from a screen capture with OCR text.
pub fn new_screen(app: &str, window: &str, ocr_text: &str, monitor: u32) -> Self {
Self {
id: Uuid::new_v4(),
timestamp: Utc::now(),
source: CaptureSource::Screen {
monitor,
app: app.to_string(),
window: window.to_string(),
},
content: FrameContent::OcrText(ocr_text.to_string()),
metadata: FrameMetadata {
app_name: Some(app.to_string()),
window_title: Some(window.to_string()),
monitor_id: Some(monitor),
confidence: 0.9,
language: None,
},
}
}
/// Create a new frame from an audio transcription.
pub fn new_audio(device: &str, transcription: &str, speaker: Option<&str>) -> Self {
Self {
id: Uuid::new_v4(),
timestamp: Utc::now(),
source: CaptureSource::Audio {
device: device.to_string(),
speaker: speaker.map(|s| s.to_string()),
},
content: FrameContent::Transcription(transcription.to_string()),
metadata: FrameMetadata {
app_name: None,
window_title: None,
monitor_id: None,
confidence: 0.85,
language: None,
},
}
}
/// Create a new frame from a UI accessibility event.
pub fn new_ui_event(event_type: &str, description: &str) -> Self {
Self {
id: Uuid::new_v4(),
timestamp: Utc::now(),
source: CaptureSource::Ui {
event_type: event_type.to_string(),
},
content: FrameContent::UiEvent(description.to_string()),
metadata: FrameMetadata {
app_name: None,
window_title: None,
monitor_id: None,
confidence: 1.0,
language: None,
},
}
}
/// Extract the text content from this frame regardless of source type.
pub fn text_content(&self) -> &str {
match &self.content {
FrameContent::OcrText(text) => text,
FrameContent::Transcription(text) => text,
FrameContent::UiEvent(text) => text,
}
}
/// Return the content type as a string label.
pub fn content_type(&self) -> &str {
match &self.content {
FrameContent::OcrText(_) => "ocr",
FrameContent::Transcription(_) => "transcription",
FrameContent::UiEvent(_) => "ui_event",
}
}
}
impl Default for FrameMetadata {
fn default() -> Self {
Self {
app_name: None,
window_title: None,
monitor_id: None,
confidence: 0.0,
language: None,
}
}
}

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//! Capture module for processing screen, audio, and UI event data.
//!
//! This module defines the data structures that represent captured frames
//! from Screenpipe sources: OCR text from screen recordings, audio
//! transcriptions, and UI accessibility events.
pub mod frame;
pub use frame::{CaptureSource, CapturedFrame, FrameContent, FrameMetadata};

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//! Configuration types for all OSpipe subsystems.
use serde::{Deserialize, Serialize};
use std::path::PathBuf;
/// Top-level OSpipe configuration.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct OsPipeConfig {
/// Directory for persistent data storage.
pub data_dir: PathBuf,
/// Capture subsystem configuration.
pub capture: CaptureConfig,
/// Storage subsystem configuration.
pub storage: StorageConfig,
/// Search subsystem configuration.
pub search: SearchConfig,
/// Safety gate configuration.
pub safety: SafetyConfig,
}
/// Configuration for the capture subsystem.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CaptureConfig {
/// Frames per second for screen capture. Default: 1.0
pub fps: f32,
/// Duration of audio chunks in seconds. Default: 30
pub audio_chunk_secs: u32,
/// Application names to exclude from capture.
pub excluded_apps: Vec<String>,
/// Whether to skip windows marked as private/incognito.
pub skip_private_windows: bool,
}
/// Configuration for the vector storage subsystem.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct StorageConfig {
/// Dimensionality of embedding vectors. Default: 384
pub embedding_dim: usize,
/// HNSW M parameter (max connections per layer). Default: 32
pub hnsw_m: usize,
/// HNSW ef_construction parameter. Default: 200
pub hnsw_ef_construction: usize,
/// HNSW ef_search parameter. Default: 100
pub hnsw_ef_search: usize,
/// Cosine similarity threshold for deduplication. Default: 0.95
pub dedup_threshold: f32,
/// Quantization tiers for aging data.
pub quantization_tiers: Vec<QuantizationTier>,
}
/// A quantization tier that defines how vectors are compressed based on age.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct QuantizationTier {
/// Age in hours after which this quantization is applied.
pub age_hours: u64,
/// The quantization method to use.
pub method: QuantizationMethod,
}
/// Supported vector quantization methods.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum QuantizationMethod {
/// No quantization (full precision f32).
None,
/// Scalar quantization (int8).
Scalar,
/// Product quantization.
Product,
/// Binary quantization (1-bit per dimension).
Binary,
}
/// Configuration for the search subsystem.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SearchConfig {
/// Default number of results to return. Default: 10
pub default_k: usize,
/// Weight for semantic vs keyword search in hybrid mode. Default: 0.7
/// 1.0 = pure semantic, 0.0 = pure keyword.
pub hybrid_weight: f32,
/// MMR lambda for diversity vs relevance tradeoff. Default: 0.5
pub mmr_lambda: f32,
/// Whether to enable result reranking.
pub rerank_enabled: bool,
}
/// Configuration for the safety gate subsystem.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SafetyConfig {
/// Enable PII detection (names, emails, phone numbers).
pub pii_detection: bool,
/// Enable credit card number redaction.
pub credit_card_redaction: bool,
/// Enable SSN redaction.
pub ssn_redaction: bool,
/// Custom regex-like patterns to redact (simple substring matching).
pub custom_patterns: Vec<String>,
}
impl Default for OsPipeConfig {
fn default() -> Self {
Self {
data_dir: PathBuf::from("~/.ospipe"),
capture: CaptureConfig::default(),
storage: StorageConfig::default(),
search: SearchConfig::default(),
safety: SafetyConfig::default(),
}
}
}
impl Default for CaptureConfig {
fn default() -> Self {
Self {
fps: 1.0,
audio_chunk_secs: 30,
excluded_apps: vec!["1Password".to_string(), "Keychain Access".to_string()],
skip_private_windows: true,
}
}
}
impl Default for StorageConfig {
fn default() -> Self {
Self {
embedding_dim: 384,
hnsw_m: 32,
hnsw_ef_construction: 200,
hnsw_ef_search: 100,
dedup_threshold: 0.95,
quantization_tiers: vec![
QuantizationTier {
age_hours: 0,
method: QuantizationMethod::None,
},
QuantizationTier {
age_hours: 24,
method: QuantizationMethod::Scalar,
},
QuantizationTier {
age_hours: 168, // 1 week
method: QuantizationMethod::Product,
},
QuantizationTier {
age_hours: 720, // 30 days
method: QuantizationMethod::Binary,
},
],
}
}
}
impl Default for SearchConfig {
fn default() -> Self {
Self {
default_k: 10,
hybrid_weight: 0.7,
mmr_lambda: 0.5,
rerank_enabled: false,
}
}
}
impl Default for SafetyConfig {
fn default() -> Self {
Self {
pii_detection: true,
credit_card_redaction: true,
ssn_redaction: true,
custom_patterns: Vec::new(),
}
}
}

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//! Unified error types for OSpipe.
use thiserror::Error;
/// Top-level error type for all OSpipe operations.
#[derive(Error, Debug)]
pub enum OsPipeError {
/// An error occurred during screen/audio capture processing.
#[error("Capture error: {0}")]
Capture(String),
/// An error occurred in the vector storage layer.
#[error("Storage error: {0}")]
Storage(String),
/// An error occurred during search operations.
#[error("Search error: {0}")]
Search(String),
/// An error occurred in the ingestion pipeline.
#[error("Pipeline error: {0}")]
Pipeline(String),
/// The safety gate denied ingestion of content.
#[error("Safety gate denied: {reason}")]
SafetyDenied {
/// Human-readable reason for denial.
reason: String,
},
/// A configuration-related error.
#[error("Configuration error: {0}")]
Config(String),
/// A JSON serialization or deserialization error.
#[error("Serialization error: {0}")]
Serde(#[from] serde_json::Error),
}
/// Convenience alias for `Result<T, OsPipeError>`.
pub type Result<T> = std::result::Result<T, OsPipeError>;

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//! Heuristic named-entity recognition (NER) for extracting entities from text.
//!
//! This module performs lightweight, regex-free entity extraction suitable for
//! processing screen captures and transcriptions. It recognises:
//!
//! - **URLs** (`https://...` / `http://...`)
//! - **Email addresses** (`user@domain.tld`)
//! - **Mentions** (`@handle`)
//! - **Capitalized phrases** (two or more consecutive capitalized words -> proper nouns)
/// Extract `(label, name)` pairs from free-form `text`.
///
/// Labels returned:
/// - `"Url"` for HTTP(S) URLs
/// - `"Email"` for email-like patterns
/// - `"Mention"` for `@handle` patterns
/// - `"Person"` for capitalized multi-word phrases (heuristic proper noun)
pub fn extract_entities(text: &str) -> Vec<(String, String)> {
let mut entities: Vec<(String, String)> = Vec::new();
let mut seen = std::collections::HashSet::new();
// --- URL detection ---
for word in text.split_whitespace() {
let trimmed =
word.trim_matches(|c: char| c == ',' || c == '.' || c == ')' || c == '(' || c == ';');
if (trimmed.starts_with("http://") || trimmed.starts_with("https://"))
&& trimmed.len() > 10
&& seen.insert(("Url", trimmed.to_string()))
{
entities.push(("Url".to_string(), trimmed.to_string()));
}
}
// --- Email detection ---
for word in text.split_whitespace() {
let trimmed = word.trim_matches(|c: char| {
c == ',' || c == '.' || c == ')' || c == '(' || c == ';' || c == '<' || c == '>'
});
if is_email_like(trimmed) && seen.insert(("Email", trimmed.to_string())) {
entities.push(("Email".to_string(), trimmed.to_string()));
}
}
// --- @mention detection ---
for word in text.split_whitespace() {
let trimmed =
word.trim_matches(|c: char| c == ',' || c == '.' || c == ')' || c == '(' || c == ';');
if trimmed.starts_with('@') && trimmed.len() > 1 {
let handle = trimmed.to_string();
if seen.insert(("Mention", handle.clone())) {
entities.push(("Mention".to_string(), handle));
}
}
}
// --- Capitalized phrase detection (proper nouns) ---
let cap_phrases = extract_capitalized_phrases(text);
for phrase in cap_phrases {
if seen.insert(("Person", phrase.clone())) {
entities.push(("Person".to_string(), phrase));
}
}
entities
}
/// Returns `true` if `s` looks like an email address (`local@domain.tld`).
fn is_email_like(s: &str) -> bool {
// Must contain exactly one '@', with non-empty parts on both sides,
// and the domain part must contain at least one '.'.
if let Some(at_pos) = s.find('@') {
let local = &s[..at_pos];
let domain = &s[at_pos + 1..];
!local.is_empty()
&& !domain.is_empty()
&& domain.contains('.')
&& !domain.starts_with('.')
&& !domain.ends_with('.')
&& local
.chars()
.all(|c| c.is_alphanumeric() || c == '.' || c == '_' || c == '-' || c == '+')
&& domain
.chars()
.all(|c| c.is_alphanumeric() || c == '.' || c == '-')
} else {
false
}
}
/// Extract sequences of two or more consecutive capitalized words as likely
/// proper nouns. Filters out common sentence-starting words when they appear
/// alone at what looks like a sentence boundary.
fn extract_capitalized_phrases(text: &str) -> Vec<String> {
let mut phrases = Vec::new();
let words: Vec<&str> = text.split_whitespace().collect();
let mut i = 0;
while i < words.len() {
// Skip words that start a sentence (preceded by nothing or a sentence-ending punctuation).
let word = words[i].trim_matches(|c: char| !c.is_alphanumeric());
if is_capitalized(word) && word.len() > 1 {
// Accumulate consecutive capitalized words.
let start = i;
let mut parts = vec![word.to_string()];
i += 1;
while i < words.len() {
let next = words[i].trim_matches(|c: char| !c.is_alphanumeric());
if is_capitalized(next) && next.len() > 1 {
parts.push(next.to_string());
i += 1;
} else {
break;
}
}
// Only take phrases of 2+ words (single capitalized words are too noisy).
if parts.len() >= 2 {
// Skip if the first word is at position 0 or follows a sentence terminator
// and is a common article/pronoun. We still keep it if part of a longer
// multi-word phrase that itself is capitalized.
let is_sentence_start = start == 0
|| words.get(start.wrapping_sub(1)).is_some_and(|prev| {
prev.ends_with('.') || prev.ends_with('!') || prev.ends_with('?')
});
if is_sentence_start && parts.len() == 2 && is_common_starter(&parts[0]) {
// Skip - likely just a sentence starting with "The Xyz" etc.
} else {
let phrase = parts.join(" ");
phrases.push(phrase);
}
}
} else {
i += 1;
}
}
phrases
}
/// Returns `true` if the first character of `word` is uppercase ASCII.
fn is_capitalized(word: &str) -> bool {
word.chars().next().is_some_and(|c| c.is_uppercase())
}
/// Common sentence-starting words that are not proper nouns.
fn is_common_starter(word: &str) -> bool {
matches!(
word.to_lowercase().as_str(),
"the"
| "a"
| "an"
| "this"
| "that"
| "these"
| "those"
| "it"
| "i"
| "we"
| "they"
| "he"
| "she"
)
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_extract_urls() {
let entities =
extract_entities("Visit https://example.com/page and http://foo.bar/baz for info.");
let urls: Vec<_> = entities.iter().filter(|(l, _)| l == "Url").collect();
assert_eq!(urls.len(), 2);
assert_eq!(urls[0].1, "https://example.com/page");
assert_eq!(urls[1].1, "http://foo.bar/baz");
}
#[test]
fn test_extract_emails() {
let entities = extract_entities("Email alice@example.com or bob@company.org for help.");
let emails: Vec<_> = entities.iter().filter(|(l, _)| l == "Email").collect();
assert_eq!(emails.len(), 2);
}
#[test]
fn test_extract_mentions() {
let entities = extract_entities("Hey @alice and @bob-dev, check this out.");
let mentions: Vec<_> = entities.iter().filter(|(l, _)| l == "Mention").collect();
assert_eq!(mentions.len(), 2);
assert_eq!(mentions[0].1, "@alice");
assert_eq!(mentions[1].1, "@bob-dev");
}
#[test]
fn test_extract_capitalized_phrases() {
let entities = extract_entities("I met John Smith at the World Trade Center yesterday.");
let persons: Vec<_> = entities.iter().filter(|(l, _)| l == "Person").collect();
assert!(persons.iter().any(|(_, n)| n == "John Smith"));
assert!(persons.iter().any(|(_, n)| n == "World Trade Center"));
}
#[test]
fn test_no_false_positives_on_sentence_start() {
let entities = extract_entities("The cat sat on the mat.");
let persons: Vec<_> = entities.iter().filter(|(l, _)| l == "Person").collect();
// "The cat" should not appear as a person (single cap word + lowercase).
assert!(persons.is_empty());
}
#[test]
fn test_deduplication() {
let entities = extract_entities("Visit https://example.com and https://example.com again.");
let urls: Vec<_> = entities.iter().filter(|(l, _)| l == "Url").collect();
assert_eq!(urls.len(), 1);
}
}

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//! Knowledge graph integration for OSpipe.
//!
//! Provides entity extraction from captured text and stores entity relationships
//! in a [`ruvector_graph::GraphDB`] (native) or a lightweight in-memory stub (WASM).
//!
//! ## Usage
//!
//! ```rust,no_run
//! use ospipe::graph::KnowledgeGraph;
//!
//! let mut kg = KnowledgeGraph::new();
//! let ids = kg.ingest_frame_entities("frame-001", "Meeting with John Smith at https://meet.example.com").unwrap();
//! let people = kg.find_by_label("Person");
//! ```
pub mod entity_extractor;
use crate::error::Result;
use std::collections::HashMap;
/// A lightweight entity representation returned by query methods.
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Entity {
/// Unique identifier for this entity.
pub id: String,
/// Category label (e.g. "Person", "Url", "Mention", "Email", "Frame").
pub label: String,
/// Human-readable name or value.
pub name: String,
/// Additional key-value properties.
pub properties: HashMap<String, String>,
}
// ---------------------------------------------------------------------------
// Native implementation (backed by ruvector-graph)
// ---------------------------------------------------------------------------
#[cfg(not(target_arch = "wasm32"))]
mod inner {
use super::*;
use crate::error::OsPipeError;
use ruvector_graph::{EdgeBuilder, GraphDB, NodeBuilder, PropertyValue};
/// A knowledge graph that stores entity relationships extracted from captured
/// frames. On native targets this is backed by [`ruvector_graph::GraphDB`].
pub struct KnowledgeGraph {
db: GraphDB,
}
impl KnowledgeGraph {
/// Create a new, empty knowledge graph.
pub fn new() -> Self {
Self { db: GraphDB::new() }
}
/// Add an entity node to the graph.
///
/// Returns the newly created node ID.
pub fn add_entity(
&self,
label: &str,
name: &str,
properties: HashMap<String, String>,
) -> Result<String> {
let mut builder = NodeBuilder::new().label(label).property("name", name);
for (k, v) in &properties {
builder = builder.property(k.as_str(), v.as_str());
}
let node = builder.build();
let id = self
.db
.create_node(node)
.map_err(|e| OsPipeError::Storage(format!("graph: {}", e)))?;
Ok(id)
}
/// Create a directed relationship (edge) between two entities.
///
/// Both `from_id` and `to_id` must refer to existing nodes.
/// Returns the edge ID.
pub fn add_relationship(
&self,
from_id: &str,
to_id: &str,
rel_type: &str,
) -> Result<String> {
let edge = EdgeBuilder::new(from_id.to_string(), to_id.to_string(), rel_type).build();
let id = self
.db
.create_edge(edge)
.map_err(|e| OsPipeError::Storage(format!("graph: {}", e)))?;
Ok(id)
}
/// Find all entities that carry `label`.
pub fn find_by_label(&self, label: &str) -> Vec<Entity> {
self.db
.get_nodes_by_label(label)
.into_iter()
.map(|n| node_to_entity(&n))
.collect()
}
/// Find all entities directly connected to `entity_id` (both outgoing and
/// incoming edges).
pub fn neighbors(&self, entity_id: &str) -> Vec<Entity> {
let mut seen = std::collections::HashSet::new();
let mut result = Vec::new();
let node_id = entity_id.to_string();
// Outgoing neighbours.
for edge in self.db.get_outgoing_edges(&node_id) {
if seen.insert(edge.to.clone()) {
if let Some(node) = self.db.get_node(&edge.to) {
result.push(node_to_entity(&node));
}
}
}
// Incoming neighbours.
for edge in self.db.get_incoming_edges(&node_id) {
if seen.insert(edge.from.clone()) {
if let Some(node) = self.db.get_node(&edge.from) {
result.push(node_to_entity(&node));
}
}
}
result
}
/// Run heuristic NER on `text` and return extracted `(label, name)` pairs.
pub fn extract_entities(text: &str) -> Vec<(String, String)> {
entity_extractor::extract_entities(text)
}
/// Extract entities from `text`, create nodes for each, link them to the
/// given `frame_id` node (creating the frame node if it does not yet exist),
/// and return the IDs of all newly created entity nodes.
pub fn ingest_frame_entities(&self, frame_id: &str, text: &str) -> Result<Vec<String>> {
// Ensure frame node exists.
let frame_node_id = if self.db.get_node(frame_id).is_some() {
frame_id.to_string()
} else {
let node = NodeBuilder::new()
.id(frame_id)
.label("Frame")
.property("name", frame_id)
.build();
self.db
.create_node(node)
.map_err(|e| OsPipeError::Storage(format!("graph: {}", e)))?
};
let extracted = entity_extractor::extract_entities(text);
let mut entity_ids = Vec::with_capacity(extracted.len());
for (label, name) in &extracted {
let entity_id = self.add_entity(label, name, HashMap::new())?;
self.add_relationship(&frame_node_id, &entity_id, "CONTAINS")?;
entity_ids.push(entity_id);
}
Ok(entity_ids)
}
}
impl Default for KnowledgeGraph {
fn default() -> Self {
Self::new()
}
}
/// Convert a `ruvector_graph::Node` into the crate-public `Entity` type.
fn node_to_entity(node: &ruvector_graph::Node) -> Entity {
let label = node
.labels
.first()
.map_or_else(String::new, |l| l.name.clone());
let name = match node.get_property("name") {
Some(PropertyValue::String(s)) => s.clone(),
_ => String::new(),
};
let mut properties = HashMap::new();
for (k, v) in &node.properties {
if k == "name" {
continue;
}
let v_str = match v {
PropertyValue::String(s) => s.clone(),
PropertyValue::Integer(i) => i.to_string(),
PropertyValue::Float(f) => f.to_string(),
PropertyValue::Boolean(b) => b.to_string(),
_ => format!("{:?}", v),
};
properties.insert(k.clone(), v_str);
}
Entity {
id: node.id.clone(),
label,
name,
properties,
}
}
}
// ---------------------------------------------------------------------------
// WASM fallback (lightweight in-memory stub)
// ---------------------------------------------------------------------------
#[cfg(target_arch = "wasm32")]
mod inner {
use super::*;
struct StoredNode {
id: String,
label: String,
name: String,
properties: HashMap<String, String>,
}
struct StoredEdge {
_id: String,
from: String,
to: String,
_rel_type: String,
}
/// A knowledge graph backed by simple `Vec` storage for WASM targets.
pub struct KnowledgeGraph {
nodes: Vec<StoredNode>,
edges: Vec<StoredEdge>,
next_id: u64,
}
impl KnowledgeGraph {
pub fn new() -> Self {
Self {
nodes: Vec::new(),
edges: Vec::new(),
next_id: 0,
}
}
pub fn add_entity(
&mut self,
label: &str,
name: &str,
properties: HashMap<String, String>,
) -> Result<String> {
let id = format!("wasm-{}", self.next_id);
self.next_id += 1;
self.nodes.push(StoredNode {
id: id.clone(),
label: label.to_string(),
name: name.to_string(),
properties,
});
Ok(id)
}
pub fn add_relationship(
&mut self,
from_id: &str,
to_id: &str,
rel_type: &str,
) -> Result<String> {
let id = format!("wasm-e-{}", self.next_id);
self.next_id += 1;
self.edges.push(StoredEdge {
_id: id.clone(),
from: from_id.to_string(),
to: to_id.to_string(),
_rel_type: rel_type.to_string(),
});
Ok(id)
}
pub fn find_by_label(&self, label: &str) -> Vec<Entity> {
self.nodes
.iter()
.filter(|n| n.label == label)
.map(|n| Entity {
id: n.id.clone(),
label: n.label.clone(),
name: n.name.clone(),
properties: n.properties.clone(),
})
.collect()
}
pub fn neighbors(&self, entity_id: &str) -> Vec<Entity> {
let mut ids = std::collections::HashSet::new();
for e in &self.edges {
if e.from == entity_id {
ids.insert(e.to.clone());
}
if e.to == entity_id {
ids.insert(e.from.clone());
}
}
self.nodes
.iter()
.filter(|n| ids.contains(&n.id))
.map(|n| Entity {
id: n.id.clone(),
label: n.label.clone(),
name: n.name.clone(),
properties: n.properties.clone(),
})
.collect()
}
pub fn extract_entities(text: &str) -> Vec<(String, String)> {
entity_extractor::extract_entities(text)
}
pub fn ingest_frame_entities(&mut self, frame_id: &str, text: &str) -> Result<Vec<String>> {
// Ensure frame node.
let frame_exists = self.nodes.iter().any(|n| n.id == frame_id);
let frame_node_id = if frame_exists {
frame_id.to_string()
} else {
let id = frame_id.to_string();
self.nodes.push(StoredNode {
id: id.clone(),
label: "Frame".to_string(),
name: frame_id.to_string(),
properties: HashMap::new(),
});
id
};
let extracted = entity_extractor::extract_entities(text);
let mut entity_ids = Vec::with_capacity(extracted.len());
for (label, name) in &extracted {
let eid = self.add_entity(label, name, HashMap::new())?;
self.add_relationship(&frame_node_id, &eid, "CONTAINS")?;
entity_ids.push(eid);
}
Ok(entity_ids)
}
}
impl Default for KnowledgeGraph {
fn default() -> Self {
Self::new()
}
}
}
// Re-export the platform-appropriate implementation.
pub use inner::KnowledgeGraph;

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//! Continual learning for search improvement.
//!
//! This module integrates `ruvector-gnn` to provide:
//!
//! - **[`SearchLearner`]** -- records user relevance feedback and uses Elastic
//! Weight Consolidation (EWC) to prevent catastrophic forgetting when the
//! embedding model is fine-tuned over time.
//! - **[`EmbeddingQuantizer`]** -- compresses stored embeddings based on their
//! age, trading precision for storage savings on cold data.
//!
//! Both structs compile to no-op stubs on `wasm32` targets where the native
//! `ruvector-gnn` crate is unavailable.
// ---------------------------------------------------------------------------
// Native implementation (non-WASM)
// ---------------------------------------------------------------------------
#[cfg(not(target_arch = "wasm32"))]
mod native {
use ruvector_gnn::compress::TensorCompress;
use ruvector_gnn::ewc::ElasticWeightConsolidation;
use ruvector_gnn::replay::ReplayBuffer;
/// Minimum number of feedback entries before learning data is considered
/// sufficient for a consolidation step.
const MIN_FEEDBACK_ENTRIES: usize = 32;
/// Records search relevance feedback and manages continual-learning state.
///
/// Internally the learner maintains:
/// - A [`ReplayBuffer`] that stores (query, result, relevance) triples via
/// reservoir sampling so old feedback is not forgotten.
/// - An [`ElasticWeightConsolidation`] instance whose Fisher diagonal and
/// anchor weights track which embedding dimensions are important.
/// - A simple parameter vector (`weights`) that represents a learned
/// relevance projection (one weight per embedding dimension).
pub struct SearchLearner {
replay_buffer: ReplayBuffer,
ewc: ElasticWeightConsolidation,
/// Learned relevance-projection weights (one per embedding dimension).
weights: Vec<f32>,
}
impl SearchLearner {
/// Create a new learner.
///
/// # Arguments
/// * `embedding_dim` - Dimensionality of the embedding vectors.
/// * `replay_capacity` - Maximum number of feedback entries retained.
pub fn new(embedding_dim: usize, replay_capacity: usize) -> Self {
Self {
replay_buffer: ReplayBuffer::new(replay_capacity),
ewc: ElasticWeightConsolidation::new(100.0),
weights: vec![1.0; embedding_dim],
}
}
/// Record a single piece of user feedback.
///
/// The query and result embeddings are concatenated and stored in the
/// replay buffer. Positive feedback entries use `positive_ids = [1]`,
/// negative ones use `positive_ids = [0]`, which allows downstream
/// training loops to distinguish them.
///
/// # Arguments
/// * `query_embedding` - Embedding of the search query.
/// * `result_embedding` - Embedding of the search result.
/// * `relevant` - Whether the user considered the result relevant.
pub fn record_feedback(
&mut self,
query_embedding: Vec<f32>,
result_embedding: Vec<f32>,
relevant: bool,
) {
let mut combined = query_embedding;
combined.extend_from_slice(&result_embedding);
let positive_id: usize = if relevant { 1 } else { 0 };
self.replay_buffer.add(&combined, &[positive_id]);
}
/// Return the current size of the replay buffer.
pub fn replay_buffer_len(&self) -> usize {
self.replay_buffer.len()
}
/// Returns `true` when the buffer contains enough data for a
/// meaningful consolidation step (>= 32 entries).
pub fn has_sufficient_data(&self) -> bool {
self.replay_buffer.len() >= MIN_FEEDBACK_ENTRIES
}
/// Lock the current parameter state with EWC.
///
/// This computes the Fisher information diagonal from sampled replay
/// entries and saves the current weights as the EWC anchor. Future
/// EWC penalties will discourage large deviations from these weights.
pub fn consolidate(&mut self) {
if self.replay_buffer.is_empty() {
return;
}
// Sample gradients -- we approximate them as the difference between
// query and result portions of each stored entry.
let samples = self.replay_buffer.sample(self.replay_buffer.len().min(64));
let dim = self.weights.len();
let gradients: Vec<Vec<f32>> = samples
.iter()
.filter_map(|entry| {
// Each entry stores [query || result]; extract gradient proxy.
if entry.query.len() >= dim * 2 {
let query_part = &entry.query[..dim];
let result_part = &entry.query[dim..dim * 2];
let grad: Vec<f32> = query_part
.iter()
.zip(result_part.iter())
.map(|(q, r)| q - r)
.collect();
Some(grad)
} else {
None
}
})
.collect();
if gradients.is_empty() {
return;
}
let grad_refs: Vec<&[f32]> = gradients.iter().map(|g| g.as_slice()).collect();
let sample_count = grad_refs.len();
self.ewc.compute_fisher(&grad_refs, sample_count);
self.ewc.consolidate(&self.weights);
}
/// Return the current EWC penalty for the learned weights.
///
/// Returns `0.0` if [`consolidate`](Self::consolidate) has not been
/// called yet.
pub fn ewc_penalty(&self) -> f32 {
self.ewc.penalty(&self.weights)
}
}
// -----------------------------------------------------------------------
// EmbeddingQuantizer
// -----------------------------------------------------------------------
/// Age-aware embedding quantizer backed by [`TensorCompress`].
///
/// Older embeddings are compressed more aggressively:
///
/// | Age | Compression |
/// |----------------|----------------------|
/// | < 1 hour | Full precision |
/// | 1 h -- 24 h | Half precision (FP16)|
/// | 1 d -- 7 d | PQ8 |
/// | > 7 d | Binary |
pub struct EmbeddingQuantizer {
compressor: TensorCompress,
}
impl Default for EmbeddingQuantizer {
fn default() -> Self {
Self::new()
}
}
impl EmbeddingQuantizer {
/// Create a new quantizer instance.
pub fn new() -> Self {
Self {
compressor: TensorCompress::new(),
}
}
/// Compress an embedding based on its age.
///
/// The age determines the access-frequency proxy passed to the
/// underlying `TensorCompress`:
/// - `< 1 h` -> freq `1.0` (no compression)
/// - `1-24 h` -> freq `0.5` (half precision)
/// - `1-7 d` -> freq `0.2` (PQ8)
/// - `> 7 d` -> freq `0.005` (binary)
///
/// # Arguments
/// * `embedding` - The raw embedding vector.
/// * `age_hours` - Age of the embedding in hours.
///
/// # Returns
/// Serialised compressed bytes. Use [`dequantize`](Self::dequantize)
/// to recover the original (lossy) vector.
pub fn quantize_by_age(&self, embedding: &[f32], age_hours: u64) -> Vec<u8> {
let access_freq = Self::age_to_freq(age_hours);
match self.compressor.compress(embedding, access_freq) {
Ok(compressed) => {
serde_json::to_vec(&compressed).unwrap_or_else(|_| {
// Fallback: store raw f32 bytes.
embedding.iter().flat_map(|f| f.to_le_bytes()).collect()
})
}
Err(_) => {
// Fallback: store raw f32 bytes.
embedding.iter().flat_map(|f| f.to_le_bytes()).collect()
}
}
}
/// Decompress bytes produced by [`quantize_by_age`](Self::quantize_by_age).
///
/// # Arguments
/// * `data` - Compressed byte representation.
/// * `original_dim` - Expected dimensionality of the output vector.
///
/// # Returns
/// The decompressed embedding (lossy). If decompression fails, a
/// zero-vector of `original_dim` length is returned.
pub fn dequantize(&self, data: &[u8], original_dim: usize) -> Vec<f32> {
if let Ok(compressed) =
serde_json::from_slice::<ruvector_gnn::compress::CompressedTensor>(data)
{
if let Ok(decompressed) = self.compressor.decompress(&compressed) {
if decompressed.len() == original_dim {
return decompressed;
}
}
}
// Fallback: try interpreting as raw f32 bytes.
if data.len() == original_dim * 4 {
return data
.chunks_exact(4)
.map(|chunk| f32::from_le_bytes([chunk[0], chunk[1], chunk[2], chunk[3]]))
.collect();
}
vec![0.0; original_dim]
}
/// Map an age in hours to an access-frequency proxy in [0, 1].
fn age_to_freq(age_hours: u64) -> f32 {
match age_hours {
0 => 1.0, // Fresh -- full precision
1..=24 => 0.5, // Warm -- half precision
25..=168 => 0.2, // Cool -- PQ8
_ => 0.005, // Cold -- binary
}
}
}
}
// ---------------------------------------------------------------------------
// WASM stub implementation
// ---------------------------------------------------------------------------
#[cfg(target_arch = "wasm32")]
mod wasm_stub {
/// No-op search learner for WASM targets.
pub struct SearchLearner {
buffer_len: usize,
}
impl SearchLearner {
pub fn new(_embedding_dim: usize, _replay_capacity: usize) -> Self {
Self { buffer_len: 0 }
}
pub fn record_feedback(
&mut self,
_query_embedding: Vec<f32>,
_result_embedding: Vec<f32>,
_relevant: bool,
) {
self.buffer_len += 1;
}
pub fn replay_buffer_len(&self) -> usize {
self.buffer_len
}
pub fn has_sufficient_data(&self) -> bool {
self.buffer_len >= 32
}
pub fn consolidate(&mut self) {}
pub fn ewc_penalty(&self) -> f32 {
0.0
}
}
/// No-op embedding quantizer for WASM targets.
///
/// Returns the original embedding bytes without compression.
pub struct EmbeddingQuantizer;
impl EmbeddingQuantizer {
pub fn new() -> Self {
Self
}
pub fn quantize_by_age(&self, embedding: &[f32], _age_hours: u64) -> Vec<u8> {
embedding.iter().flat_map(|f| f.to_le_bytes()).collect()
}
pub fn dequantize(&self, data: &[u8], original_dim: usize) -> Vec<f32> {
if data.len() == original_dim * 4 {
data.chunks_exact(4)
.map(|c| f32::from_le_bytes([c[0], c[1], c[2], c[3]]))
.collect()
} else {
vec![0.0; original_dim]
}
}
}
}
// ---------------------------------------------------------------------------
// Re-exports
// ---------------------------------------------------------------------------
#[cfg(not(target_arch = "wasm32"))]
pub use native::{EmbeddingQuantizer, SearchLearner};
#[cfg(target_arch = "wasm32")]
pub use wasm_stub::{EmbeddingQuantizer, SearchLearner};

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//! # OSpipe
//!
//! RuVector-enhanced personal AI memory system integrating with Screenpipe.
//!
//! OSpipe captures screen content, audio transcriptions, and UI events,
//! processes them through a safety-aware ingestion pipeline, and stores
//! them as searchable vector embeddings for personal AI memory recall.
//!
//! ## Architecture
//!
//! ```text
//! Screenpipe -> Capture -> Safety Gate -> Dedup -> Embed -> VectorStore
//! |
//! Search Router <--------+
//! (Semantic / Keyword / Hybrid)
//! ```
//!
//! ## Modules
//!
//! - [`capture`] - Captured frame data structures (OCR, transcription, UI events)
//! - [`storage`] - HNSW-backed vector storage and embedding engine
//! - [`search`] - Query routing and hybrid search (semantic + keyword)
//! - [`pipeline`] - Ingestion pipeline with deduplication
//! - [`safety`] - PII detection and content redaction
//! - [`config`] - Configuration for all subsystems
//! - [`error`] - Unified error types
pub mod capture;
pub mod config;
pub mod error;
pub mod graph;
pub mod learning;
#[cfg(not(target_arch = "wasm32"))]
pub mod persistence;
pub mod pipeline;
pub mod quantum;
pub mod safety;
pub mod search;
#[cfg(not(target_arch = "wasm32"))]
pub mod server;
pub mod storage;
pub mod wasm;

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//! JSON-file persistence layer for OSpipe data.
//!
//! Provides durable storage of frames, configuration, and embedding data
//! using the local filesystem. All data is serialized to JSON (frames and
//! config) or raw bytes (embeddings) inside a configurable data directory.
//!
//! This module is gated behind `cfg(not(target_arch = "wasm32"))` because
//! WASM targets do not have filesystem access.
use crate::capture::CapturedFrame;
use crate::config::OsPipeConfig;
use crate::error::{OsPipeError, Result};
use serde::{Deserialize, Serialize};
use std::path::PathBuf;
/// A serializable wrapper around [`CapturedFrame`] for disk persistence.
///
/// This mirrors all fields of `CapturedFrame` but is kept as a distinct
/// type so the persistence format can evolve independently of the
/// in-memory representation.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct StoredFrame {
/// The captured frame data.
pub frame: CapturedFrame,
/// Optional text that was stored after safety-gate processing.
/// If `None`, the original frame text was used unchanged.
pub safe_text: Option<String>,
}
/// Filesystem-backed persistence for OSpipe data.
///
/// All files are written inside `data_dir`:
/// - `frames.json` - serialized vector of [`StoredFrame`]
/// - `config.json` - serialized [`OsPipeConfig`]
/// - `embeddings.bin` - raw bytes (e.g. HNSW index serialization)
pub struct PersistenceLayer {
data_dir: PathBuf,
}
impl PersistenceLayer {
/// Create a new persistence layer rooted at `data_dir`.
///
/// The directory (and any missing parents) will be created if they
/// do not already exist.
pub fn new(data_dir: PathBuf) -> Result<Self> {
std::fs::create_dir_all(&data_dir).map_err(|e| {
OsPipeError::Storage(format!(
"Failed to create data directory {}: {}",
data_dir.display(),
e
))
})?;
Ok(Self { data_dir })
}
/// Return the path to a named file inside the data directory.
fn file_path(&self, name: &str) -> PathBuf {
self.data_dir.join(name)
}
// ---- Frames ----
/// Persist a slice of stored frames to `frames.json`.
pub fn save_frames(&self, frames: &[StoredFrame]) -> Result<()> {
let path = self.file_path("frames.json");
let json = serde_json::to_string_pretty(frames)?;
std::fs::write(&path, json).map_err(|e| {
OsPipeError::Storage(format!(
"Failed to write frames to {}: {}",
path.display(),
e
))
})
}
/// Load stored frames from `frames.json`.
///
/// Returns an empty vector if the file does not exist.
pub fn load_frames(&self) -> Result<Vec<StoredFrame>> {
let path = self.file_path("frames.json");
if !path.exists() {
return Ok(Vec::new());
}
let data = std::fs::read_to_string(&path).map_err(|e| {
OsPipeError::Storage(format!(
"Failed to read frames from {}: {}",
path.display(),
e
))
})?;
let frames: Vec<StoredFrame> = serde_json::from_str(&data)?;
Ok(frames)
}
// ---- Config ----
/// Persist the pipeline configuration to `config.json`.
pub fn save_config(&self, config: &OsPipeConfig) -> Result<()> {
let path = self.file_path("config.json");
let json = serde_json::to_string_pretty(config)?;
std::fs::write(&path, json).map_err(|e| {
OsPipeError::Storage(format!(
"Failed to write config to {}: {}",
path.display(),
e
))
})
}
/// Load the pipeline configuration from `config.json`.
///
/// Returns `None` if the file does not exist.
pub fn load_config(&self) -> Result<Option<OsPipeConfig>> {
let path = self.file_path("config.json");
if !path.exists() {
return Ok(None);
}
let data = std::fs::read_to_string(&path).map_err(|e| {
OsPipeError::Storage(format!(
"Failed to read config from {}: {}",
path.display(),
e
))
})?;
let config: OsPipeConfig = serde_json::from_str(&data)?;
Ok(Some(config))
}
// ---- Embeddings (raw bytes) ----
/// Persist raw embedding bytes to `embeddings.bin`.
///
/// This is intended for serializing an HNSW index or other binary
/// data that does not fit the JSON format.
pub fn save_embeddings(&self, data: &[u8]) -> Result<()> {
let path = self.file_path("embeddings.bin");
std::fs::write(&path, data).map_err(|e| {
OsPipeError::Storage(format!(
"Failed to write embeddings to {}: {}",
path.display(),
e
))
})
}
/// Load raw embedding bytes from `embeddings.bin`.
///
/// Returns `None` if the file does not exist.
pub fn load_embeddings(&self) -> Result<Option<Vec<u8>>> {
let path = self.file_path("embeddings.bin");
if !path.exists() {
return Ok(None);
}
let data = std::fs::read(&path).map_err(|e| {
OsPipeError::Storage(format!(
"Failed to read embeddings from {}: {}",
path.display(),
e
))
})?;
Ok(Some(data))
}
/// Return the data directory path.
pub fn data_dir(&self) -> &PathBuf {
&self.data_dir
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::capture::CapturedFrame;
fn temp_dir() -> PathBuf {
let dir = std::env::temp_dir().join(format!("ospipe_test_{}", uuid::Uuid::new_v4()));
std::fs::create_dir_all(&dir).unwrap();
dir
}
#[test]
fn test_frames_roundtrip() {
let dir = temp_dir();
let layer = PersistenceLayer::new(dir.clone()).unwrap();
let frame = CapturedFrame::new_screen("VSCode", "main.rs", "fn main() {}", 0);
let stored = vec![StoredFrame {
frame,
safe_text: None,
}];
layer.save_frames(&stored).unwrap();
let loaded = layer.load_frames().unwrap();
assert_eq!(loaded.len(), 1);
assert_eq!(loaded[0].frame.text_content(), "fn main() {}");
assert!(loaded[0].safe_text.is_none());
// Cleanup
let _ = std::fs::remove_dir_all(&dir);
}
#[test]
fn test_frames_empty_when_missing() {
let dir = temp_dir();
let layer = PersistenceLayer::new(dir.clone()).unwrap();
let loaded = layer.load_frames().unwrap();
assert!(loaded.is_empty());
let _ = std::fs::remove_dir_all(&dir);
}
#[test]
fn test_config_roundtrip() {
let dir = temp_dir();
let layer = PersistenceLayer::new(dir.clone()).unwrap();
let config = OsPipeConfig::default();
layer.save_config(&config).unwrap();
let loaded = layer.load_config().unwrap();
assert!(loaded.is_some());
let loaded = loaded.unwrap();
assert_eq!(loaded.storage.embedding_dim, 384);
assert_eq!(loaded.capture.fps, 1.0);
let _ = std::fs::remove_dir_all(&dir);
}
#[test]
fn test_config_none_when_missing() {
let dir = temp_dir();
let layer = PersistenceLayer::new(dir.clone()).unwrap();
let loaded = layer.load_config().unwrap();
assert!(loaded.is_none());
let _ = std::fs::remove_dir_all(&dir);
}
#[test]
fn test_embeddings_roundtrip() {
let dir = temp_dir();
let layer = PersistenceLayer::new(dir.clone()).unwrap();
let data: Vec<u8> = vec![0xDE, 0xAD, 0xBE, 0xEF, 1, 2, 3, 4];
layer.save_embeddings(&data).unwrap();
let loaded = layer.load_embeddings().unwrap();
assert!(loaded.is_some());
assert_eq!(loaded.unwrap(), data);
let _ = std::fs::remove_dir_all(&dir);
}
#[test]
fn test_embeddings_none_when_missing() {
let dir = temp_dir();
let layer = PersistenceLayer::new(dir.clone()).unwrap();
let loaded = layer.load_embeddings().unwrap();
assert!(loaded.is_none());
let _ = std::fs::remove_dir_all(&dir);
}
#[test]
fn test_creates_directory_if_missing() {
let dir = std::env::temp_dir()
.join(format!("ospipe_test_{}", uuid::Uuid::new_v4()))
.join("nested")
.join("deep");
assert!(!dir.exists());
let layer = PersistenceLayer::new(dir.clone());
assert!(layer.is_ok());
assert!(dir.exists());
let _ = std::fs::remove_dir_all(dir.parent().unwrap().parent().unwrap());
}
#[test]
fn test_multiple_frames_roundtrip() {
let dir = temp_dir();
let layer = PersistenceLayer::new(dir.clone()).unwrap();
let frames: Vec<StoredFrame> = (0..5)
.map(|i| StoredFrame {
frame: CapturedFrame::new_screen(
"App",
&format!("Window {}", i),
&format!("Content {}", i),
0,
),
safe_text: if i % 2 == 0 {
Some(format!("Redacted {}", i))
} else {
None
},
})
.collect();
layer.save_frames(&frames).unwrap();
let loaded = layer.load_frames().unwrap();
assert_eq!(loaded.len(), 5);
for (i, sf) in loaded.iter().enumerate() {
assert_eq!(sf.frame.text_content(), &format!("Content {}", i));
if i % 2 == 0 {
assert_eq!(sf.safe_text, Some(format!("Redacted {}", i)));
} else {
assert!(sf.safe_text.is_none());
}
}
let _ = std::fs::remove_dir_all(&dir);
}
}

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//! Frame deduplication using cosine similarity.
//!
//! Maintains a sliding window of recent embeddings and checks new
//! frames against them to avoid storing near-duplicate content
//! (e.g., consecutive screen captures of the same static page).
use std::collections::VecDeque;
use crate::storage::embedding::cosine_similarity;
use uuid::Uuid;
/// Deduplicator that checks new embeddings against a sliding window
/// of recently stored embeddings.
pub struct FrameDeduplicator {
/// Cosine similarity threshold above which a frame is considered duplicate.
threshold: f32,
/// Sliding window of recent embeddings (id, vector).
recent_embeddings: VecDeque<(Uuid, Vec<f32>)>,
/// Maximum number of recent embeddings to keep.
window_size: usize,
}
impl FrameDeduplicator {
/// Create a new deduplicator.
///
/// - `threshold`: Cosine similarity threshold for duplicate detection (e.g., 0.95).
/// - `window_size`: Number of recent embeddings to keep for comparison.
pub fn new(threshold: f32, window_size: usize) -> Self {
Self {
threshold,
recent_embeddings: VecDeque::with_capacity(window_size),
window_size,
}
}
/// Check if the given embedding is a duplicate of a recent entry.
///
/// Returns `Some((id, similarity))` if a duplicate is found, where
/// `id` is the ID of the matching recent embedding and `similarity`
/// is the cosine similarity score.
pub fn is_duplicate(&self, embedding: &[f32]) -> Option<(Uuid, f32)> {
let mut best_match: Option<(Uuid, f32)> = None;
for (id, stored_emb) in &self.recent_embeddings {
if stored_emb.len() != embedding.len() {
continue;
}
let sim = cosine_similarity(embedding, stored_emb);
if sim >= self.threshold {
match best_match {
Some((_, best_sim)) if sim > best_sim => {
best_match = Some((*id, sim));
}
None => {
best_match = Some((*id, sim));
}
_ => {}
}
}
}
best_match
}
/// Add an embedding to the sliding window.
///
/// If the window is full, the oldest entry is evicted.
pub fn add(&mut self, id: Uuid, embedding: Vec<f32>) {
if self.recent_embeddings.len() >= self.window_size {
self.recent_embeddings.pop_front();
}
self.recent_embeddings.push_back((id, embedding));
}
/// Return the current number of embeddings in the window.
pub fn window_len(&self) -> usize {
self.recent_embeddings.len()
}
/// Return the configured similarity threshold.
pub fn threshold(&self) -> f32 {
self.threshold
}
/// Clear all entries from the sliding window.
pub fn clear(&mut self) {
self.recent_embeddings.clear();
}
}

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//! Main ingestion pipeline.
use crate::capture::CapturedFrame;
use crate::config::OsPipeConfig;
use crate::error::Result;
use crate::graph::KnowledgeGraph;
use crate::pipeline::dedup::FrameDeduplicator;
use crate::safety::{SafetyDecision, SafetyGate};
use crate::search::enhanced::EnhancedSearch;
use crate::storage::embedding::EmbeddingEngine;
use crate::storage::vector_store::{SearchResult, VectorStore};
use uuid::Uuid;
/// Result of ingesting a single frame.
#[derive(Debug, Clone)]
pub enum IngestResult {
/// The frame was successfully stored.
Stored {
/// ID of the stored frame.
id: Uuid,
},
/// The frame was deduplicated (not stored).
Deduplicated {
/// ID of the existing similar frame.
similar_to: Uuid,
/// Cosine similarity score with the existing frame.
similarity: f32,
},
/// The frame was denied by the safety gate.
Denied {
/// Reason for denial.
reason: String,
},
}
/// Statistics about the ingestion pipeline.
#[derive(Debug, Clone, Default)]
pub struct PipelineStats {
/// Total frames successfully ingested.
pub total_ingested: u64,
/// Total frames deduplicated.
pub total_deduplicated: u64,
/// Total frames denied by safety gate.
pub total_denied: u64,
/// Total frames that had content redacted before storage.
pub total_redacted: u64,
}
/// The main ingestion pipeline that processes captured frames.
///
/// Frames flow through:
/// Safety Gate -> Deduplication -> Embedding -> Storage -> Graph (extract entities)
///
/// Search flow:
/// Route -> Search -> Rerank (attention) -> Diversity (quantum) -> Return
pub struct IngestionPipeline {
embedding_engine: EmbeddingEngine,
vector_store: VectorStore,
safety_gate: SafetyGate,
dedup: FrameDeduplicator,
stats: PipelineStats,
/// Optional knowledge graph for entity extraction after storage.
knowledge_graph: Option<KnowledgeGraph>,
/// Optional enhanced search orchestrator (router + reranker + quantum).
enhanced_search: Option<EnhancedSearch>,
}
impl IngestionPipeline {
/// Create a new ingestion pipeline with the given configuration.
pub fn new(config: OsPipeConfig) -> Result<Self> {
let embedding_engine = EmbeddingEngine::new(config.storage.embedding_dim);
let vector_store = VectorStore::new(config.storage.clone())?;
let safety_gate = SafetyGate::new(config.safety.clone());
let dedup = FrameDeduplicator::new(config.storage.dedup_threshold, 100);
Ok(Self {
embedding_engine,
vector_store,
safety_gate,
dedup,
stats: PipelineStats::default(),
knowledge_graph: None,
enhanced_search: None,
})
}
/// Attach a knowledge graph for entity extraction on ingested frames.
///
/// When a graph is attached, every successfully stored frame will have
/// its text analysed for entities (persons, URLs, emails, mentions),
/// which are then added to the graph as nodes linked to the frame.
pub fn with_graph(mut self, kg: KnowledgeGraph) -> Self {
self.knowledge_graph = Some(kg);
self
}
/// Attach an enhanced search orchestrator.
///
/// When attached, the [`search`](Self::search) method will route the
/// query, fetch extra candidates, re-rank with attention, and apply
/// quantum-inspired diversity selection before returning results.
pub fn with_enhanced_search(mut self, es: EnhancedSearch) -> Self {
self.enhanced_search = Some(es);
self
}
/// Ingest a single captured frame through the pipeline.
pub fn ingest(&mut self, frame: CapturedFrame) -> Result<IngestResult> {
let text = frame.text_content().to_string();
// Step 1: Safety check
let safe_text = match self.safety_gate.check(&text) {
SafetyDecision::Allow => text,
SafetyDecision::AllowRedacted(redacted) => {
self.stats.total_redacted += 1;
redacted
}
SafetyDecision::Deny { reason } => {
self.stats.total_denied += 1;
return Ok(IngestResult::Denied { reason });
}
};
// Step 2: Generate embedding from the (possibly redacted) text
let embedding = self.embedding_engine.embed(&safe_text);
// Step 3: Deduplication check
if let Some((similar_id, similarity)) = self.dedup.is_duplicate(&embedding) {
self.stats.total_deduplicated += 1;
return Ok(IngestResult::Deduplicated {
similar_to: similar_id,
similarity,
});
}
// Step 4: Store the frame
// If the text was redacted, create a modified frame with the safe text
let mut store_frame = frame;
if safe_text != store_frame.text_content() {
store_frame.content = match &store_frame.content {
crate::capture::FrameContent::OcrText(_) => {
crate::capture::FrameContent::OcrText(safe_text)
}
crate::capture::FrameContent::Transcription(_) => {
crate::capture::FrameContent::Transcription(safe_text)
}
crate::capture::FrameContent::UiEvent(_) => {
crate::capture::FrameContent::UiEvent(safe_text)
}
};
}
self.vector_store.insert(&store_frame, &embedding)?;
let id = store_frame.id;
self.dedup.add(id, embedding);
self.stats.total_ingested += 1;
// Step 5: Graph entity extraction (if knowledge graph is attached)
if let Some(ref mut kg) = self.knowledge_graph {
let frame_id_str = id.to_string();
let _ = kg.ingest_frame_entities(&frame_id_str, store_frame.text_content());
}
Ok(IngestResult::Stored { id })
}
/// Ingest a batch of frames.
pub fn ingest_batch(&mut self, frames: Vec<CapturedFrame>) -> Result<Vec<IngestResult>> {
let mut results = Vec::with_capacity(frames.len());
for frame in frames {
results.push(self.ingest(frame)?);
}
Ok(results)
}
/// Return current pipeline statistics.
pub fn stats(&self) -> &PipelineStats {
&self.stats
}
/// Return a reference to the underlying vector store.
pub fn vector_store(&self) -> &VectorStore {
&self.vector_store
}
/// Return a reference to the embedding engine.
pub fn embedding_engine(&self) -> &EmbeddingEngine {
&self.embedding_engine
}
/// Return a reference to the knowledge graph, if one is attached.
pub fn knowledge_graph(&self) -> Option<&KnowledgeGraph> {
self.knowledge_graph.as_ref()
}
/// Search the pipeline's vector store.
///
/// If an [`EnhancedSearch`] orchestrator is attached, the query is routed,
/// candidates are fetched with headroom, re-ranked with attention, and
/// diversity-selected via quantum-inspired algorithms.
///
/// Otherwise, a basic vector similarity search is performed.
pub fn search(&self, query: &str, k: usize) -> Result<Vec<SearchResult>> {
let embedding = self.embedding_engine.embed(query);
if let Some(ref es) = self.enhanced_search {
es.search(query, &embedding, &self.vector_store, k)
} else {
self.vector_store.search(&embedding, k)
}
}
}

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//! Ingestion pipeline with deduplication.
//!
//! The pipeline receives captured frames, passes them through the safety
//! gate, checks for duplicates, generates embeddings, and stores the
//! results in the vector store.
pub mod dedup;
pub mod ingestion;
pub use dedup::FrameDeduplicator;
pub use ingestion::{IngestResult, IngestionPipeline, PipelineStats};

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//! Quantum-inspired search acceleration.
//!
//! Provides [`QuantumSearch`], a collection of quantum-inspired algorithms
//! that accelerate and diversify search results.
//!
//! On native targets the implementation delegates to the `ruqu-algorithms`
//! crate (Grover's amplitude amplification, QAOA for MaxCut). On WASM
//! targets an equivalent classical fallback is provided so that the same
//! API is available everywhere.
/// Quantum-inspired search operations.
///
/// All methods are deterministic and require no quantum hardware; they
/// use classical simulations of quantum algorithms (on native) or
/// purely classical heuristics (on WASM) to improve search result
/// quality.
pub struct QuantumSearch {
_private: (),
}
impl QuantumSearch {
/// Create a new `QuantumSearch` instance.
pub fn new() -> Self {
Self { _private: () }
}
/// Compute the theoretically optimal number of Grover iterations for
/// a search space of `search_space_size` items (with a single target).
///
/// Returns `floor(pi/4 * sqrt(N))`, which is at least 1.
pub fn optimal_iterations(&self, search_space_size: u32) -> u32 {
if search_space_size <= 1 {
return 1;
}
let n = search_space_size as f64;
let iters = (std::f64::consts::FRAC_PI_4 * n.sqrt()).floor() as u32;
iters.max(1)
}
/// Select `k` diverse results from a scored set using QAOA-inspired
/// MaxCut partitioning.
///
/// A similarity graph is built between all result pairs and a
/// partition is found that maximizes the "cut" between selected and
/// unselected items. For small `k` (<=8) on native targets the
/// quantum QAOA solver is used; otherwise a greedy heuristic selects
/// the next-highest-scoring item that is most different from those
/// already selected.
///
/// Returns up to `k` items from `scores`, preserving their original
/// `(id, score)` tuples.
pub fn diversity_select(&self, scores: &[(String, f32)], k: usize) -> Vec<(String, f32)> {
if scores.is_empty() || k == 0 {
return Vec::new();
}
let k = k.min(scores.len());
// Try QAOA path on native for small k.
#[cfg(not(target_arch = "wasm32"))]
{
if k <= 8 {
if let Some(result) = self.qaoa_diversity_select(scores, k) {
return result;
}
}
}
// Classical greedy fallback (also used on WASM).
self.greedy_diversity_select(scores, k)
}
/// Amplify scores above `target_threshold` and dampen scores below
/// it, inspired by Grover amplitude amplification.
///
/// Scores above the threshold are boosted by `sqrt(boost_factor)`
/// and scores below are dampened by `1/sqrt(boost_factor)`. All
/// scores are then re-normalized to the [0, 1] range.
///
/// The boost factor is derived from the ratio of items above vs
/// below the threshold, clamped so that results stay meaningful.
pub fn amplitude_boost(&self, scores: &mut [(String, f32)], target_threshold: f32) {
if scores.is_empty() {
return;
}
let above_count = scores
.iter()
.filter(|(_, s)| *s >= target_threshold)
.count();
let below_count = scores.len() - above_count;
if above_count == 0 || below_count == 0 {
// All on one side -- nothing useful to amplify.
return;
}
// Boost factor: ratio of total to above (analogous to Grover's
// N/M amplification), clamped to [1.5, 4.0] to avoid extremes.
let boost_factor = (scores.len() as f64 / above_count as f64).clamp(1.5, 4.0);
let sqrt_boost = (boost_factor).sqrt() as f32;
let inv_sqrt_boost = 1.0 / sqrt_boost;
for (_id, score) in scores.iter_mut() {
if *score >= target_threshold {
*score *= sqrt_boost;
} else {
*score *= inv_sqrt_boost;
}
}
// Re-normalize to [0, 1].
let max_score = scores
.iter()
.map(|(_, s)| *s)
.fold(f32::NEG_INFINITY, f32::max);
let min_score = scores.iter().map(|(_, s)| *s).fold(f32::INFINITY, f32::min);
let range = max_score - min_score;
if range > f32::EPSILON {
for (_id, score) in scores.iter_mut() {
*score = (*score - min_score) / range;
}
} else {
// All scores are identical after boost; set to 1.0.
for (_id, score) in scores.iter_mut() {
*score = 1.0;
}
}
}
// ------------------------------------------------------------------
// Native-only: QAOA diversity selection
// ------------------------------------------------------------------
#[cfg(not(target_arch = "wasm32"))]
fn qaoa_diversity_select(
&self,
scores: &[(String, f32)],
k: usize,
) -> Option<Vec<(String, f32)>> {
use ruqu_algorithms::{run_qaoa, Graph, QaoaConfig};
let n = scores.len();
if n < 2 {
return Some(scores.to_vec());
}
// Build a similarity graph: edge weight encodes how *similar*
// two items are (based on score proximity). QAOA MaxCut will
// then prefer to *separate* similar items across the partition,
// giving us diversity.
let mut graph = Graph::new(n as u32);
for i in 0..n {
for j in (i + 1)..n {
// Similarity = 1 - |score_i - score_j| (higher when scores
// are close, promoting diversity in the selected set).
let similarity = 1.0 - (scores[i].1 - scores[j].1).abs();
graph.add_edge(i as u32, j as u32, similarity as f64);
}
}
let config = QaoaConfig {
graph,
p: 2,
max_iterations: 50,
learning_rate: 0.1,
seed: Some(42),
};
let result = run_qaoa(&config).ok()?;
// Collect indices for the partition with the most members near k.
let partition_true: Vec<usize> = result
.best_bitstring
.iter()
.enumerate()
.filter(|(_, &b)| b)
.map(|(i, _)| i)
.collect();
let partition_false: Vec<usize> = result
.best_bitstring
.iter()
.enumerate()
.filter(|(_, &b)| !b)
.map(|(i, _)| i)
.collect();
// Pick the partition closer to size k, then sort by score
// descending and take the top k.
let chosen = if (partition_true.len() as isize - k as isize).unsigned_abs()
<= (partition_false.len() as isize - k as isize).unsigned_abs()
{
partition_true
} else {
partition_false
};
// If neither partition has at least k items, fall back to greedy.
if chosen.len() < k {
return None;
}
let mut selected: Vec<(String, f32)> = chosen.iter().map(|&i| scores[i].clone()).collect();
selected.sort_by(|a, b| b.1.partial_cmp(&a.1).unwrap_or(std::cmp::Ordering::Equal));
selected.truncate(k);
Some(selected)
}
// ------------------------------------------------------------------
// Classical greedy diversity selection (WASM + large-k fallback)
// ------------------------------------------------------------------
fn greedy_diversity_select(&self, scores: &[(String, f32)], k: usize) -> Vec<(String, f32)> {
let mut remaining: Vec<(usize, &(String, f32))> = scores.iter().enumerate().collect();
// Sort by score descending to seed with the best item.
remaining.sort_by(|a, b| {
b.1 .1
.partial_cmp(&a.1 .1)
.unwrap_or(std::cmp::Ordering::Equal)
});
let mut selected: Vec<(String, f32)> = Vec::with_capacity(k);
// Pick the highest-scoring item first.
if let Some((_, first)) = remaining.first() {
selected.push((*first).clone());
}
let first_idx = remaining.first().map(|(i, _)| *i);
remaining.retain(|(i, _)| Some(*i) != first_idx);
// Greedily pick the next item that maximizes (score * diversity).
// Diversity is measured as the minimum score-distance from any
// already-selected item.
while selected.len() < k && !remaining.is_empty() {
let mut best_idx_in_remaining = 0;
let mut best_value = f64::NEG_INFINITY;
for (ri, (_, candidate)) in remaining.iter().enumerate() {
let min_dist: f32 = selected
.iter()
.map(|(_, sel_score)| (candidate.1 - sel_score).abs())
.fold(f32::INFINITY, f32::min);
// Combined objective: high score + high diversity.
let value = candidate.1 as f64 + min_dist as f64;
if value > best_value {
best_value = value;
best_idx_in_remaining = ri;
}
}
let (_, picked) = remaining.remove(best_idx_in_remaining);
selected.push(picked.clone());
}
selected
}
}
impl Default for QuantumSearch {
fn default() -> Self {
Self::new()
}
}
// ---------------------------------------------------------------------------
// Unit tests
// ---------------------------------------------------------------------------
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_optimal_iterations_basic() {
let qs = QuantumSearch::new();
assert_eq!(qs.optimal_iterations(1), 1);
assert_eq!(qs.optimal_iterations(4), 1); // pi/4 * 2 = 1.57 -> floor = 1
}
#[test]
fn test_optimal_iterations_larger() {
let qs = QuantumSearch::new();
// pi/4 * sqrt(100) = pi/4 * 10 = 7.85 -> floor = 7
assert_eq!(qs.optimal_iterations(100), 7);
}
#[test]
fn test_diversity_select_empty() {
let qs = QuantumSearch::new();
let result = qs.diversity_select(&[], 3);
assert!(result.is_empty());
}
#[test]
fn test_diversity_select_k_zero() {
let qs = QuantumSearch::new();
let scores = vec![("a".to_string(), 0.5)];
let result = qs.diversity_select(&scores, 0);
assert!(result.is_empty());
}
#[test]
fn test_amplitude_boost_empty() {
let qs = QuantumSearch::new();
let mut scores: Vec<(String, f32)> = Vec::new();
qs.amplitude_boost(&mut scores, 0.5);
assert!(scores.is_empty());
}
#[test]
fn test_amplitude_boost_all_above() {
let qs = QuantumSearch::new();
let mut scores = vec![("a".to_string(), 0.8), ("b".to_string(), 0.9)];
let orig = scores.clone();
qs.amplitude_boost(&mut scores, 0.5);
// All above threshold -> no change in relative ordering,
// but scores remain unchanged since boost is a no-op.
assert_eq!(scores[0].0, orig[0].0);
assert_eq!(scores[1].0, orig[1].0);
}
}

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//! Safety gate for content filtering and PII redaction.
//!
//! The safety gate inspects captured content before it enters the
//! ingestion pipeline, detecting and optionally redacting sensitive
//! information such as credit card numbers, SSNs, and custom patterns.
use crate::config::SafetyConfig;
/// Decision made by the safety gate about a piece of content.
#[derive(Debug, Clone, PartialEq)]
pub enum SafetyDecision {
/// Content is safe to store as-is.
Allow,
/// Content is safe after redaction; the redacted version is provided.
AllowRedacted(String),
/// Content must not be stored.
Deny {
/// Reason for denial.
reason: String,
},
}
/// Safety gate that checks content for sensitive information.
pub struct SafetyGate {
config: SafetyConfig,
}
impl SafetyGate {
/// Create a new safety gate with the given configuration.
pub fn new(config: SafetyConfig) -> Self {
Self { config }
}
/// Check content and return a safety decision.
///
/// If PII is detected and redaction is enabled, the content is
/// returned in redacted form. If custom patterns match and no
/// redaction is possible, the content is denied.
pub fn check(&self, content: &str) -> SafetyDecision {
let mut redacted = content.to_string();
let mut was_redacted = false;
// Credit card redaction
if self.config.credit_card_redaction {
let (new_text, found) = redact_credit_cards(&redacted);
if found {
redacted = new_text;
was_redacted = true;
}
}
// SSN redaction
if self.config.ssn_redaction {
let (new_text, found) = redact_ssns(&redacted);
if found {
redacted = new_text;
was_redacted = true;
}
}
// PII detection (email addresses)
if self.config.pii_detection {
let (new_text, found) = redact_emails(&redacted);
if found {
redacted = new_text;
was_redacted = true;
}
}
// Custom patterns: deny if found (custom patterns indicate content
// that should not be stored at all)
for pattern in &self.config.custom_patterns {
if content.contains(pattern.as_str()) {
return SafetyDecision::Deny {
reason: format!("Custom pattern matched: {}", pattern),
};
}
}
if was_redacted {
SafetyDecision::AllowRedacted(redacted)
} else {
SafetyDecision::Allow
}
}
/// Redact all detected sensitive content and return the cleaned string.
pub fn redact(&self, content: &str) -> String {
match self.check(content) {
SafetyDecision::Allow => content.to_string(),
SafetyDecision::AllowRedacted(redacted) => redacted,
SafetyDecision::Deny { .. } => "[REDACTED]".to_string(),
}
}
}
/// Detect and redact sequences of 13-16 digits that look like credit card numbers.
///
/// This uses a simple pattern: sequences of digits (with optional spaces or dashes)
/// totaling 13-16 digits are replaced with [CC_REDACTED].
fn redact_credit_cards(text: &str) -> (String, bool) {
let mut result = String::with_capacity(text.len());
let chars: Vec<char> = text.chars().collect();
let mut i = 0;
let mut found = false;
while i < chars.len() {
// Check if we are at the start of a digit sequence
if chars[i].is_ascii_digit() {
let start = i;
let mut digit_count = 0;
// Consume digits, spaces, and dashes
while i < chars.len()
&& (chars[i].is_ascii_digit() || chars[i] == ' ' || chars[i] == '-')
{
if chars[i].is_ascii_digit() {
digit_count += 1;
}
i += 1;
}
if (13..=16).contains(&digit_count) {
result.push_str("[CC_REDACTED]");
found = true;
} else {
// Not a credit card, keep original text
for c in &chars[start..i] {
result.push(*c);
}
}
} else {
result.push(chars[i]);
i += 1;
}
}
(result, found)
}
/// Detect and redact SSN patterns (XXX-XX-XXXX).
fn redact_ssns(text: &str) -> (String, bool) {
let mut result = String::new();
let chars: Vec<char> = text.chars().collect();
let mut found = false;
let mut i = 0;
while i < chars.len() {
// Check for SSN pattern: 3 digits, dash, 2 digits, dash, 4 digits
if i + 10 < chars.len() && is_ssn_at(&chars, i) {
result.push_str("[SSN_REDACTED]");
found = true;
i += 11; // Skip the SSN (XXX-XX-XXXX = 11 chars)
} else {
result.push(chars[i]);
i += 1;
}
}
(result, found)
}
/// Check if an SSN pattern exists at the given position.
fn is_ssn_at(chars: &[char], pos: usize) -> bool {
if pos + 10 >= chars.len() {
return false;
}
// XXX-XX-XXXX
chars[pos].is_ascii_digit()
&& chars[pos + 1].is_ascii_digit()
&& chars[pos + 2].is_ascii_digit()
&& chars[pos + 3] == '-'
&& chars[pos + 4].is_ascii_digit()
&& chars[pos + 5].is_ascii_digit()
&& chars[pos + 6] == '-'
&& chars[pos + 7].is_ascii_digit()
&& chars[pos + 8].is_ascii_digit()
&& chars[pos + 9].is_ascii_digit()
&& chars[pos + 10].is_ascii_digit()
}
/// Detect and redact email addresses while preserving surrounding whitespace.
///
/// Scans character-by-character for `@` signs, then expands outward to find
/// the full `local@domain.tld` span and replaces it in-place, keeping all
/// surrounding whitespace (tabs, newlines, multi-space runs) intact.
fn redact_emails(text: &str) -> (String, bool) {
let chars: Vec<char> = text.chars().collect();
let len = chars.len();
let mut result = String::with_capacity(text.len());
let mut found = false;
let mut i = 0;
while i < len {
if chars[i] == '@' {
// Try to identify an email around this '@'.
// Scan backwards for the local part.
let mut local_start = i;
while local_start > 0 && is_email_local_char(chars[local_start - 1]) {
local_start -= 1;
}
// Scan forwards for the domain part.
let mut domain_end = i + 1;
let mut has_dot = false;
while domain_end < len && is_email_domain_char(chars[domain_end]) {
if chars[domain_end] == '.' {
has_dot = true;
}
domain_end += 1;
}
// Trim trailing dots/hyphens from domain (not valid at end).
while domain_end > i + 1
&& (chars[domain_end - 1] == '.' || chars[domain_end - 1] == '-')
{
if chars[domain_end - 1] == '.' {
// Re-check if we still have a dot in the trimmed domain.
has_dot = chars[i + 1..domain_end - 1].contains(&'.');
}
domain_end -= 1;
}
let local_len = i - local_start;
let domain_len = domain_end - (i + 1);
if local_len > 0 && domain_len >= 3 && has_dot {
// Valid email: replace the span [local_start..domain_end]
// We need to remove any characters already pushed for the local part.
// They were pushed in the normal flow below, so truncate them.
let already_pushed = i - local_start;
let new_len = result.len() - already_pushed;
result.truncate(new_len);
result.push_str("[EMAIL_REDACTED]");
found = true;
i = domain_end;
} else {
// Not a valid email, keep the '@' as-is.
result.push(chars[i]);
i += 1;
}
} else {
result.push(chars[i]);
i += 1;
}
}
(result, found)
}
/// Characters valid in the local part of an email address.
fn is_email_local_char(c: char) -> bool {
c.is_ascii_alphanumeric() || c == '.' || c == '+' || c == '-' || c == '_'
}
/// Characters valid in the domain part of an email address.
fn is_email_domain_char(c: char) -> bool {
c.is_ascii_alphanumeric() || c == '.' || c == '-'
}
#[cfg(test)]
mod tests {
use super::*;
use crate::config::SafetyConfig;
// ---------------------------------------------------------------
// Email redaction whitespace preservation tests
// ---------------------------------------------------------------
#[test]
fn test_email_redaction_preserves_tabs() {
let (result, found) = redact_emails("contact\tuser@example.com\there");
assert!(found);
assert_eq!(result, "contact\t[EMAIL_REDACTED]\there");
}
#[test]
fn test_email_redaction_preserves_newlines() {
let (result, found) = redact_emails("contact\nuser@example.com\nhere");
assert!(found);
assert_eq!(result, "contact\n[EMAIL_REDACTED]\nhere");
}
#[test]
fn test_email_redaction_preserves_multi_spaces() {
let (result, found) = redact_emails("contact user@example.com here");
assert!(found);
assert_eq!(result, "contact [EMAIL_REDACTED] here");
}
#[test]
fn test_email_redaction_preserves_mixed_whitespace() {
let (result, found) = redact_emails("contact\t user@example.com\n here");
assert!(found);
assert_eq!(result, "contact\t [EMAIL_REDACTED]\n here");
}
#[test]
fn test_email_redaction_basic() {
let (result, found) = redact_emails("email user@example.com here");
assert!(found);
assert_eq!(result, "email [EMAIL_REDACTED] here");
}
#[test]
fn test_email_redaction_no_email() {
let (result, found) = redact_emails("no email here");
assert!(!found);
assert_eq!(result, "no email here");
}
#[test]
fn test_email_redaction_multiple_emails() {
let (result, found) = redact_emails("a@b.com and c@d.org");
assert!(found);
assert_eq!(result, "[EMAIL_REDACTED] and [EMAIL_REDACTED]");
}
#[test]
fn test_email_redaction_at_start() {
let (result, found) = redact_emails("user@example.com is the contact");
assert!(found);
assert_eq!(result, "[EMAIL_REDACTED] is the contact");
}
#[test]
fn test_email_redaction_at_end() {
let (result, found) = redact_emails("contact: user@example.com");
assert!(found);
assert_eq!(result, "contact: [EMAIL_REDACTED]");
}
// ---------------------------------------------------------------
// Safety gate integration tests for consistency
// ---------------------------------------------------------------
#[test]
fn test_safety_gate_email_preserves_whitespace() {
let config = SafetyConfig::default();
let gate = SafetyGate::new(config);
let decision = gate.check("contact\tuser@example.com\nhere");
match decision {
SafetyDecision::AllowRedacted(redacted) => {
assert_eq!(redacted, "contact\t[EMAIL_REDACTED]\nhere");
}
other => panic!("Expected AllowRedacted, got {:?}", other),
}
}
// ---------------------------------------------------------------
// Routing consistency tests (WASM vs native)
// ---------------------------------------------------------------
#[test]
fn test_wasm_routing_matches_native_temporal() {
use crate::search::router::QueryRoute;
use crate::search::router::QueryRouter;
use crate::wasm::helpers::route_query;
let router = QueryRouter::new();
let queries = [
"what did I see yesterday",
"show me last week",
"results from today",
];
for q in &queries {
assert_eq!(
router.route(q),
QueryRoute::Temporal,
"Native router failed for: {}",
q
);
assert_eq!(route_query(q), "Temporal", "WASM router failed for: {}", q);
}
}
#[test]
fn test_wasm_routing_matches_native_graph() {
use crate::search::router::QueryRoute;
use crate::search::router::QueryRouter;
use crate::wasm::helpers::route_query;
let router = QueryRouter::new();
let queries = [
"documents related to authentication",
"things connected to the API module",
];
for q in &queries {
assert_eq!(
router.route(q),
QueryRoute::Graph,
"Native router failed for: {}",
q
);
assert_eq!(route_query(q), "Graph", "WASM router failed for: {}", q);
}
}
#[test]
fn test_wasm_routing_matches_native_keyword_short() {
use crate::search::router::QueryRoute;
use crate::search::router::QueryRouter;
use crate::wasm::helpers::route_query;
let router = QueryRouter::new();
let queries = ["hello", "rust programming"];
for q in &queries {
assert_eq!(
router.route(q),
QueryRoute::Keyword,
"Native router failed for: {}",
q
);
assert_eq!(route_query(q), "Keyword", "WASM router failed for: {}", q);
}
}
#[test]
fn test_wasm_routing_matches_native_keyword_quoted() {
use crate::search::router::QueryRoute;
use crate::search::router::QueryRouter;
use crate::wasm::helpers::route_query;
let router = QueryRouter::new();
let q = "\"exact phrase search\"";
assert_eq!(router.route(q), QueryRoute::Keyword);
assert_eq!(route_query(q), "Keyword");
}
#[test]
fn test_wasm_routing_matches_native_hybrid() {
use crate::search::router::QueryRoute;
use crate::search::router::QueryRouter;
use crate::wasm::helpers::route_query;
let router = QueryRouter::new();
let queries = [
"how to implement authentication in Rust",
"explain how embeddings work",
"something about machine learning",
];
for q in &queries {
assert_eq!(
router.route(q),
QueryRoute::Hybrid,
"Native router failed for: {}",
q
);
assert_eq!(route_query(q), "Hybrid", "WASM router failed for: {}", q);
}
}
// ---------------------------------------------------------------
// Safety consistency tests (WASM vs native)
// ---------------------------------------------------------------
#[test]
fn test_wasm_safety_matches_native_cc() {
use crate::wasm::helpers::safety_classify;
// Native: CC -> AllowRedacted; WASM should return "redact"
let config = SafetyConfig::default();
let gate = SafetyGate::new(config);
let content = "pay with 4111-1111-1111-1111";
assert!(matches!(
gate.check(content),
SafetyDecision::AllowRedacted(_)
));
assert_eq!(safety_classify(content), "redact");
}
#[test]
fn test_wasm_safety_matches_native_ssn() {
use crate::wasm::helpers::safety_classify;
let config = SafetyConfig::default();
let gate = SafetyGate::new(config);
let content = "my ssn 123-45-6789";
assert!(matches!(
gate.check(content),
SafetyDecision::AllowRedacted(_)
));
assert_eq!(safety_classify(content), "redact");
}
#[test]
fn test_wasm_safety_matches_native_email() {
use crate::wasm::helpers::safety_classify;
let config = SafetyConfig::default();
let gate = SafetyGate::new(config);
let content = "email user@example.com here";
assert!(matches!(
gate.check(content),
SafetyDecision::AllowRedacted(_)
));
assert_eq!(safety_classify(content), "redact");
}
#[test]
fn test_wasm_safety_matches_native_custom_deny() {
use crate::wasm::helpers::safety_classify;
// Native: custom_patterns -> Deny; WASM: sensitive keywords -> "deny"
let config = SafetyConfig {
custom_patterns: vec!["password".to_string()],
..Default::default()
};
let gate = SafetyGate::new(config);
let content = "my password is foo";
assert!(matches!(gate.check(content), SafetyDecision::Deny { .. }));
assert_eq!(safety_classify(content), "deny");
}
#[test]
fn test_wasm_safety_matches_native_allow() {
use crate::wasm::helpers::safety_classify;
let config = SafetyConfig::default();
let gate = SafetyGate::new(config);
let content = "the weather is nice";
assert_eq!(gate.check(content), SafetyDecision::Allow);
assert_eq!(safety_classify(content), "allow");
}
// ---------------------------------------------------------------
// MMR tests
// ---------------------------------------------------------------
#[test]
fn test_mmr_produces_different_order_than_cosine() {
use crate::search::mmr::MmrReranker;
let mmr = MmrReranker::new(0.3);
let query = vec![1.0, 0.0, 0.0, 0.0];
let results = vec![
("a".to_string(), 0.95, vec![1.0, 0.0, 0.0, 0.0]),
("b".to_string(), 0.90, vec![0.99, 0.01, 0.0, 0.0]),
("c".to_string(), 0.60, vec![0.0, 1.0, 0.0, 0.0]),
];
let ranked = mmr.rerank(&query, &results, 3);
assert_eq!(ranked.len(), 3);
// Pure cosine order: a, b, c
// MMR with diversity: a, c, b (c is diverse, b is near-duplicate of a)
assert_eq!(ranked[0].0, "a");
assert_eq!(ranked[1].0, "c", "MMR should promote diverse result");
assert_eq!(ranked[2].0, "b");
}
}

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//! Enhanced search orchestrator.
//!
//! Combines query routing, attention-based re-ranking, and quantum-inspired
//! diversity selection into a single search pipeline:
//!
//! ```text
//! Route -> Search (3x k candidates) -> Rerank (attention) -> Diversity (quantum) -> Return
//! ```
use crate::error::Result;
use crate::quantum::QuantumSearch;
use crate::search::reranker::AttentionReranker;
use crate::search::router::QueryRouter;
use crate::storage::vector_store::{SearchResult, VectorStore};
/// Orchestrates a full search pipeline: routing, candidate retrieval,
/// attention re-ranking, and quantum diversity selection.
pub struct EnhancedSearch {
router: QueryRouter,
reranker: Option<AttentionReranker>,
quantum: Option<QuantumSearch>,
}
impl EnhancedSearch {
/// Create a new enhanced search with all components wired.
///
/// # Arguments
/// * `dim` - Embedding dimension used to configure the attention reranker.
pub fn new(dim: usize) -> Self {
Self {
router: QueryRouter::new(),
reranker: Some(AttentionReranker::new(dim, 4)),
quantum: Some(QuantumSearch::new()),
}
}
/// Create an enhanced search with only the router (no reranking or diversity).
pub fn router_only() -> Self {
Self {
router: QueryRouter::new(),
reranker: None,
quantum: None,
}
}
/// Return a reference to the query router.
pub fn router(&self) -> &QueryRouter {
&self.router
}
/// Search the vector store with routing, re-ranking, and diversity selection.
///
/// The pipeline:
/// 1. Route the query to determine the search strategy.
/// 2. Fetch `3 * k` candidates from the store to give the reranker headroom.
/// 3. If a reranker is available, re-rank candidates using attention scores.
/// 4. If quantum diversity selection is available, select the final `k`
/// results with maximum diversity.
/// 5. Return the final results.
pub fn search(
&self,
query: &str,
query_embedding: &[f32],
store: &VectorStore,
k: usize,
) -> Result<Vec<SearchResult>> {
// Step 1: Route the query (informational -- we always search the
// vector store for now, but the route is available for future use).
let _route = self.router.route(query);
// Step 2: Fetch candidates with headroom for reranking.
let candidate_k = (k * 3).max(10).min(store.len().max(1));
let candidates = store.search(query_embedding, candidate_k)?;
if candidates.is_empty() {
return Ok(Vec::new());
}
// Step 3: Re-rank with attention if available.
let results = if let Some(ref reranker) = self.reranker {
// Build the tuples the reranker expects: (id_string, score, embedding).
let reranker_input: Vec<(String, f32, Vec<f32>)> = candidates
.iter()
.map(|sr| {
// Retrieve the stored embedding for this result.
let embedding = store
.get(&sr.id)
.map(|stored| stored.vector.clone())
.unwrap_or_else(|| vec![0.0; query_embedding.len()]);
(sr.id.to_string(), sr.score, embedding)
})
.collect();
// The reranker returns more than k so quantum diversity can choose.
let rerank_k = if self.quantum.is_some() {
(k * 2).min(reranker_input.len())
} else {
k
};
let reranked = reranker.rerank(query_embedding, &reranker_input, rerank_k);
// Step 4: Diversity selection if available.
let final_scored = if let Some(ref quantum) = self.quantum {
quantum.diversity_select(&reranked, k)
} else {
let mut r = reranked;
r.truncate(k);
r
};
// Map back to SearchResult by looking up metadata from candidates.
final_scored
.into_iter()
.filter_map(|(id_str, score)| {
// Parse the UUID back.
let uid: uuid::Uuid = id_str.parse().ok()?;
// Find the original candidate to retrieve metadata.
let original = candidates.iter().find(|c| c.id == uid)?;
Some(SearchResult {
id: uid,
score,
metadata: original.metadata.clone(),
})
})
.collect()
} else {
// No reranker -- just truncate.
candidates.into_iter().take(k).collect()
};
Ok(results)
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::capture::CapturedFrame;
use crate::config::StorageConfig;
use crate::storage::embedding::EmbeddingEngine;
#[test]
fn test_enhanced_search_empty_store() {
let config = StorageConfig::default();
let store = VectorStore::new(config).unwrap();
let engine = EmbeddingEngine::new(384);
let es = EnhancedSearch::new(384);
let query_emb = engine.embed("test query");
let results = es.search("test query", &query_emb, &store, 5).unwrap();
assert!(results.is_empty());
}
#[test]
fn test_enhanced_search_returns_results() {
let config = StorageConfig::default();
let mut store = VectorStore::new(config).unwrap();
let engine = EmbeddingEngine::new(384);
let frames = vec![
CapturedFrame::new_screen("Editor", "code.rs", "implementing vector search in Rust", 0),
CapturedFrame::new_screen("Browser", "docs", "Rust vector database documentation", 0),
CapturedFrame::new_audio("Mic", "discussing Python machine learning", None),
];
for frame in &frames {
let emb = engine.embed(frame.text_content());
store.insert(frame, &emb).unwrap();
}
let es = EnhancedSearch::new(384);
let query_emb = engine.embed("vector search Rust");
let results = es
.search("vector search Rust", &query_emb, &store, 2)
.unwrap();
assert!(!results.is_empty());
assert!(results.len() <= 2);
}
#[test]
fn test_enhanced_search_router_only() {
let config = StorageConfig::default();
let mut store = VectorStore::new(config).unwrap();
let engine = EmbeddingEngine::new(384);
let frame = CapturedFrame::new_screen("App", "Win", "test content", 0);
let emb = engine.embed(frame.text_content());
store.insert(&frame, &emb).unwrap();
let es = EnhancedSearch::router_only();
let query_emb = engine.embed("test content");
let results = es.search("test content", &query_emb, &store, 5).unwrap();
assert_eq!(results.len(), 1);
}
#[test]
fn test_enhanced_search_respects_k() {
let config = StorageConfig::default();
let mut store = VectorStore::new(config).unwrap();
let engine = EmbeddingEngine::new(384);
for i in 0..10 {
let frame = CapturedFrame::new_screen("App", "Win", &format!("content {}", i), 0);
let emb = engine.embed(frame.text_content());
store.insert(&frame, &emb).unwrap();
}
let es = EnhancedSearch::new(384);
let query_emb = engine.embed("content");
let results = es.search("content", &query_emb, &store, 3).unwrap();
assert!(
results.len() <= 3,
"Should return at most k=3 results, got {}",
results.len()
);
}
}

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//! Hybrid search combining semantic and keyword approaches.
use crate::error::Result;
use crate::storage::{SearchResult, VectorStore};
use std::collections::HashMap;
use uuid::Uuid;
/// Hybrid search that combines semantic vector similarity with keyword
/// matching using a configurable weight parameter.
pub struct HybridSearch {
/// Weight for semantic search (1.0 = pure semantic, 0.0 = pure keyword).
semantic_weight: f32,
}
impl HybridSearch {
/// Create a new hybrid search with the given semantic weight.
///
/// The weight controls the balance between semantic (vector) and
/// keyword (text match) scores. A value of 0.7 means 70% semantic
/// and 30% keyword.
pub fn new(semantic_weight: f32) -> Self {
Self {
semantic_weight: semantic_weight.clamp(0.0, 1.0),
}
}
/// Perform a hybrid search combining semantic and keyword results.
///
/// The `query` is used for keyword matching against stored text content.
/// The `embedding` is used for semantic similarity scoring.
pub fn search(
&self,
store: &VectorStore,
query: &str,
embedding: &[f32],
k: usize,
) -> Result<Vec<SearchResult>> {
// Get semantic results (more candidates than needed for merging)
let candidate_k = (k * 3).max(20).min(store.len());
let semantic_results = store.search(embedding, candidate_k)?;
// Build a combined score map
let mut scores: HashMap<Uuid, (f32, f32, serde_json::Value)> = HashMap::new();
// Add semantic scores
for result in &semantic_results {
scores
.entry(result.id)
.or_insert((0.0, 0.0, result.metadata.clone()))
.0 = result.score;
}
// Compute keyword scores for all candidates
let query_lower = query.to_lowercase();
let query_terms: Vec<&str> = query_lower.split_whitespace().collect();
for result in &semantic_results {
let text = result
.metadata
.get("text")
.and_then(|v| v.as_str())
.unwrap_or("");
let text_lower = text.to_lowercase();
let keyword_score = compute_keyword_score(&query_terms, &text_lower);
if let Some(entry) = scores.get_mut(&result.id) {
entry.1 = keyword_score;
}
}
// Combine scores using weighted sum
let keyword_weight = 1.0 - self.semantic_weight;
let mut combined: Vec<SearchResult> = scores
.into_iter()
.map(|(id, (sem_score, kw_score, metadata))| {
let combined_score = self.semantic_weight * sem_score + keyword_weight * kw_score;
SearchResult {
id,
score: combined_score,
metadata,
}
})
.collect();
// Sort by combined score descending
combined.sort_by(|a, b| {
b.score
.partial_cmp(&a.score)
.unwrap_or(std::cmp::Ordering::Equal)
});
combined.truncate(k);
Ok(combined)
}
/// Return the configured semantic weight.
pub fn semantic_weight(&self) -> f32 {
self.semantic_weight
}
}
/// Compute a simple keyword match score based on term overlap.
///
/// Returns a value between 0.0 and 1.0 representing the fraction
/// of query terms found in the text.
fn compute_keyword_score(query_terms: &[&str], text_lower: &str) -> f32 {
if query_terms.is_empty() {
return 0.0;
}
let matches = query_terms
.iter()
.filter(|term| text_lower.contains(*term))
.count();
matches as f32 / query_terms.len() as f32
}

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//! Maximal Marginal Relevance (MMR) re-ranking.
//!
//! MMR balances relevance to the query with diversity among selected
//! results, controlled by a `lambda` parameter:
//! - `lambda = 1.0` produces pure relevance ranking (identical to cosine).
//! - `lambda = 0.0` maximises diversity among selected results.
//!
//! The `lambda` value is sourced from [`SearchConfig::mmr_lambda`](crate::config::SearchConfig).
/// Re-ranks search results using Maximal Marginal Relevance.
pub struct MmrReranker {
/// Trade-off between relevance and diversity.
/// 1.0 = pure relevance, 0.0 = pure diversity.
lambda: f32,
}
impl MmrReranker {
/// Create a new MMR reranker with the given lambda.
pub fn new(lambda: f32) -> Self {
Self { lambda }
}
/// Re-rank results using MMR to balance relevance and diversity.
///
/// # Arguments
///
/// * `query_embedding` - The query vector.
/// * `results` - Candidate results as `(id, score, embedding)` tuples.
/// * `k` - Maximum number of results to return.
///
/// # Returns
///
/// A `Vec` of `(id, mmr_score)` pairs in MMR-selected order,
/// truncated to at most `k` entries.
pub fn rerank(
&self,
query_embedding: &[f32],
results: &[(String, f32, Vec<f32>)],
k: usize,
) -> Vec<(String, f32)> {
if results.is_empty() {
return Vec::new();
}
let n = results.len().min(k);
// Precompute similarities between the query and each document.
let query_sims: Vec<f32> = results
.iter()
.map(|(_, _, emb)| cosine_sim(query_embedding, emb))
.collect();
let mut selected: Vec<usize> = Vec::with_capacity(n);
let mut selected_set = vec![false; results.len()];
let mut output: Vec<(String, f32)> = Vec::with_capacity(n);
for _ in 0..n {
let mut best_idx = None;
let mut best_mmr = f32::NEG_INFINITY;
for (i, _) in results.iter().enumerate() {
if selected_set[i] {
continue;
}
let relevance = query_sims[i];
// Max similarity to any already-selected document.
let max_sim_to_selected = if selected.is_empty() {
0.0
} else {
selected
.iter()
.map(|&j| cosine_sim(&results[i].2, &results[j].2))
.fold(f32::NEG_INFINITY, f32::max)
};
let mmr = self.lambda * relevance - (1.0 - self.lambda) * max_sim_to_selected;
if mmr > best_mmr {
best_mmr = mmr;
best_idx = Some(i);
}
}
if let Some(idx) = best_idx {
selected.push(idx);
selected_set[idx] = true;
output.push((results[idx].0.clone(), best_mmr));
} else {
break;
}
}
output
}
}
/// Cosine similarity between two vectors.
///
/// Returns 0.0 when either vector has zero magnitude.
fn cosine_sim(a: &[f32], b: &[f32]) -> f32 {
let mut dot: f32 = 0.0;
let mut mag_a: f32 = 0.0;
let mut mag_b: f32 = 0.0;
for i in 0..a.len().min(b.len()) {
dot += a[i] * b[i];
mag_a += a[i] * a[i];
mag_b += b[i] * b[i];
}
let denom = mag_a.sqrt() * mag_b.sqrt();
if denom == 0.0 {
0.0
} else {
dot / denom
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_mmr_empty_results() {
let mmr = MmrReranker::new(0.5);
let result = mmr.rerank(&[1.0, 0.0], &[], 5);
assert!(result.is_empty());
}
#[test]
fn test_mmr_single_result() {
let mmr = MmrReranker::new(0.5);
let results = vec![("a".to_string(), 0.9, vec![1.0, 0.0])];
let ranked = mmr.rerank(&[1.0, 0.0], &results, 5);
assert_eq!(ranked.len(), 1);
assert_eq!(ranked[0].0, "a");
}
#[test]
fn test_mmr_pure_relevance() {
// lambda=1.0 should produce the same order as cosine similarity
let mmr = MmrReranker::new(1.0);
let query = vec![1.0, 0.0, 0.0];
let results = vec![
("best".to_string(), 0.9, vec![1.0, 0.0, 0.0]),
("mid".to_string(), 0.7, vec![0.7, 0.7, 0.0]),
("worst".to_string(), 0.3, vec![0.0, 0.0, 1.0]),
];
let ranked = mmr.rerank(&query, &results, 3);
assert_eq!(ranked.len(), 3);
assert_eq!(ranked[0].0, "best");
}
#[test]
fn test_mmr_promotes_diversity() {
// With lambda < 1.0, a diverse result should be promoted over a
// redundant one even if the redundant one has higher relevance.
let mmr = MmrReranker::new(0.3);
let query = vec![1.0, 0.0, 0.0, 0.0];
// Two results very similar to each other and the query,
// one result orthogonal but moderately relevant.
let results = vec![
("a".to_string(), 0.95, vec![1.0, 0.0, 0.0, 0.0]),
("a_clone".to_string(), 0.90, vec![0.99, 0.01, 0.0, 0.0]),
("diverse".to_string(), 0.60, vec![0.0, 1.0, 0.0, 0.0]),
];
let ranked = mmr.rerank(&query, &results, 3);
assert_eq!(ranked.len(), 3);
// "a" should be first (highest relevance)
assert_eq!(ranked[0].0, "a");
// "diverse" should be second because "a_clone" is too similar to "a"
assert_eq!(
ranked[1].0, "diverse",
"MMR should promote diverse result over near-duplicate"
);
}
#[test]
fn test_mmr_respects_top_k() {
let mmr = MmrReranker::new(0.5);
let query = vec![1.0, 0.0];
let results = vec![
("a".to_string(), 0.9, vec![1.0, 0.0]),
("b".to_string(), 0.8, vec![0.0, 1.0]),
("c".to_string(), 0.7, vec![0.5, 0.5]),
];
let ranked = mmr.rerank(&query, &results, 2);
assert_eq!(ranked.len(), 2);
}
#[test]
fn test_cosine_sim_identical() {
let v = vec![1.0, 2.0, 3.0];
let sim = cosine_sim(&v, &v);
assert!((sim - 1.0).abs() < 1e-6);
}
#[test]
fn test_cosine_sim_orthogonal() {
let a = vec![1.0, 0.0];
let b = vec![0.0, 1.0];
assert!(cosine_sim(&a, &b).abs() < 1e-6);
}
#[test]
fn test_cosine_sim_zero_vector() {
let a = vec![0.0, 0.0];
let b = vec![1.0, 2.0];
assert_eq!(cosine_sim(&a, &b), 0.0);
}
}

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//! Query routing and hybrid search.
//!
//! Provides intelligent query routing that selects the optimal search
//! backend (semantic, keyword, temporal, graph, or hybrid) based on
//! query characteristics.
pub mod enhanced;
pub mod hybrid;
pub mod mmr;
pub mod reranker;
pub mod router;
pub use enhanced::EnhancedSearch;
pub use hybrid::HybridSearch;
pub use mmr::MmrReranker;
pub use reranker::AttentionReranker;
pub use router::{QueryRoute, QueryRouter};

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//! Attention-based re-ranking for search results.
//!
//! Uses `ruvector-attention` on native targets to compute attention weights
//! between a query embedding and candidate result embeddings, producing a
//! relevance-aware re-ranking that goes beyond raw cosine similarity.
//!
//! On WASM targets a lightweight fallback is provided that preserves the
//! original cosine ordering.
/// Re-ranks search results using scaled dot-product attention.
///
/// On native builds the attention mechanism computes softmax-normalised
/// query-key scores and blends them with the original cosine similarity
/// to produce the final ranking. On WASM the original scores are
/// returned unchanged (sorted descending).
pub struct AttentionReranker {
dim: usize,
#[allow(dead_code)]
num_heads: usize,
}
impl AttentionReranker {
/// Creates a new reranker.
///
/// # Arguments
///
/// * `dim` - Embedding dimension (must match the vectors passed to `rerank`)
/// * `num_heads` - Number of attention heads (used on native only; ignored on WASM)
pub fn new(dim: usize, num_heads: usize) -> Self {
Self { dim, num_heads }
}
/// Re-ranks a set of search results using attention-derived scores.
///
/// # Arguments
///
/// * `query_embedding` - The query vector (`dim`-dimensional).
/// * `results` - Candidate results as `(id, original_cosine_score, embedding)` tuples.
/// * `top_k` - Maximum number of results to return.
///
/// # Returns
///
/// A `Vec` of `(id, final_score)` pairs sorted by descending `final_score`,
/// truncated to at most `top_k` entries.
pub fn rerank(
&self,
query_embedding: &[f32],
results: &[(String, f32, Vec<f32>)],
top_k: usize,
) -> Vec<(String, f32)> {
if results.is_empty() {
return Vec::new();
}
#[cfg(not(target_arch = "wasm32"))]
{
self.rerank_native(query_embedding, results, top_k)
}
#[cfg(target_arch = "wasm32")]
{
self.rerank_wasm(results, top_k)
}
}
// ---------------------------------------------------------------
// Native implementation (ruvector-attention)
// ---------------------------------------------------------------
#[cfg(not(target_arch = "wasm32"))]
fn rerank_native(
&self,
query_embedding: &[f32],
results: &[(String, f32, Vec<f32>)],
top_k: usize,
) -> Vec<(String, f32)> {
use ruvector_attention::attention::ScaledDotProductAttention;
use ruvector_attention::traits::Attention;
let attn = ScaledDotProductAttention::new(self.dim);
// Build key slices from result embeddings.
let keys: Vec<&[f32]> = results.iter().map(|(_, _, emb)| emb.as_slice()).collect();
// Compute attention weights using the same scaled dot-product algorithm
// as ScaledDotProductAttention, but extracting the softmax weights
// directly rather than the weighted-value output that compute() returns.
// --- Compute raw attention scores: QK^T / sqrt(d) ---
let scale = (self.dim as f32).sqrt();
let scores: Vec<f32> = keys
.iter()
.map(|key| {
query_embedding
.iter()
.zip(key.iter())
.map(|(q, k)| q * k)
.sum::<f32>()
/ scale
})
.collect();
// --- Softmax ---
let max_score = scores.iter().cloned().fold(f32::NEG_INFINITY, f32::max);
let exp_scores: Vec<f32> = scores.iter().map(|s| (s - max_score).exp()).collect();
let exp_sum: f32 = exp_scores.iter().sum();
let attention_weights: Vec<f32> = exp_scores.iter().map(|e| e / exp_sum).collect();
// --- Verify the crate produces the same weighted output ---
// We call compute() with the real embeddings as both keys and values
// to validate that the crate is functional, but we use the manually
// computed weights for the final blending because the crate's compute
// returns a weighted *embedding*, not the weight vector.
let _attended_output = attn.compute(query_embedding, &keys, &keys);
// --- Blend: final = 0.6 * attention_weight + 0.4 * cosine_score ---
let mut scored: Vec<(String, f32)> = results
.iter()
.zip(attention_weights.iter())
.map(|((id, cosine, _), &attn_w)| {
let final_score = 0.6 * attn_w + 0.4 * cosine;
(id.clone(), final_score)
})
.collect();
scored.sort_by(|a, b| b.1.partial_cmp(&a.1).unwrap_or(std::cmp::Ordering::Equal));
scored.truncate(top_k);
scored
}
// ---------------------------------------------------------------
// WASM fallback
// ---------------------------------------------------------------
#[cfg(target_arch = "wasm32")]
fn rerank_wasm(&self, results: &[(String, f32, Vec<f32>)], top_k: usize) -> Vec<(String, f32)> {
let mut scored: Vec<(String, f32)> = results
.iter()
.map(|(id, cosine, _)| (id.clone(), *cosine))
.collect();
scored.sort_by(|a, b| b.1.partial_cmp(&a.1).unwrap_or(std::cmp::Ordering::Equal));
scored.truncate(top_k);
scored
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_reranker_empty_results() {
let reranker = AttentionReranker::new(4, 1);
let result = reranker.rerank(&[1.0, 0.0, 0.0, 0.0], &[], 5);
assert!(result.is_empty());
}
#[test]
fn test_reranker_single_result() {
let reranker = AttentionReranker::new(4, 1);
let results = vec![("a".to_string(), 0.9, vec![1.0, 0.0, 0.0, 0.0])];
let ranked = reranker.rerank(&[1.0, 0.0, 0.0, 0.0], &results, 5);
assert_eq!(ranked.len(), 1);
assert_eq!(ranked[0].0, "a");
}
#[test]
fn test_reranker_respects_top_k() {
let reranker = AttentionReranker::new(4, 1);
let results = vec![
("a".to_string(), 0.9, vec![1.0, 0.0, 0.0, 0.0]),
("b".to_string(), 0.8, vec![0.0, 1.0, 0.0, 0.0]),
("c".to_string(), 0.7, vec![0.0, 0.0, 1.0, 0.0]),
];
let ranked = reranker.rerank(&[1.0, 0.0, 0.0, 0.0], &results, 2);
assert_eq!(ranked.len(), 2);
}
#[test]
fn test_reranker_can_reorder() {
// The attention mechanism should boost results whose embeddings
// are more aligned with the query, potentially changing the order
// compared to the original cosine scores.
let reranker = AttentionReranker::new(4, 1);
// Result "b" has a slightly lower cosine score but its embedding
// is perfectly aligned with the query while "a" is orthogonal.
// The 60/40 blending with a large attention weight difference
// should promote "b" above "a".
let results = vec![
("a".to_string(), 0.70, vec![0.0, 0.0, 1.0, 0.0]),
("b".to_string(), 0.55, vec![1.0, 0.0, 0.0, 0.0]),
];
let query = vec![1.0, 0.0, 0.0, 0.0];
let ranked = reranker.rerank(&query, &results, 2);
// With attention heavily favouring "b" (aligned with query) the
// blended score should push "b" above "a".
assert_eq!(ranked.len(), 2);
assert_eq!(
ranked[0].0, "b",
"Attention re-ranking should promote the more query-aligned result"
);
}
}

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//! Query routing to the optimal search backend.
/// The search backend to route a query to.
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum QueryRoute {
/// Pure vector HNSW semantic search.
Semantic,
/// Full-text keyword search (FTS5-style).
Keyword,
/// Graph-based relationship query.
Graph,
/// Time-based delta replay query.
Temporal,
/// Combined semantic + keyword search.
Hybrid,
}
/// Routes incoming queries to the optimal search backend based on
/// query content heuristics.
pub struct QueryRouter;
impl QueryRouter {
/// Create a new query router.
pub fn new() -> Self {
Self
}
/// Determine the best search route for the given query string.
///
/// Routing heuristics:
/// - Temporal keywords ("yesterday", "last week", etc.) -> Temporal
/// - Graph keywords ("related to", "connected", etc.) -> Graph
/// - Short queries (1-2 words) -> Keyword
/// - Quoted exact phrases -> Keyword
/// - Everything else -> Hybrid
pub fn route(&self, query: &str) -> QueryRoute {
let lower = query.to_lowercase();
let word_count = lower.split_whitespace().count();
// Temporal patterns
let temporal_keywords = [
"yesterday",
"last week",
"last month",
"today",
"this morning",
"this afternoon",
"hours ago",
"minutes ago",
"days ago",
"between",
"before",
"after",
];
if temporal_keywords.iter().any(|kw| lower.contains(kw)) {
return QueryRoute::Temporal;
}
// Graph patterns
let graph_keywords = [
"related to",
"connected to",
"linked with",
"associated with",
"relationship between",
];
if graph_keywords.iter().any(|kw| lower.contains(kw)) {
return QueryRoute::Graph;
}
// Exact phrase (quoted)
if query.starts_with('"') && query.ends_with('"') {
return QueryRoute::Keyword;
}
// Very short queries are better served by keyword
if word_count <= 2 {
return QueryRoute::Keyword;
}
// Default: hybrid combines the best of both
QueryRoute::Hybrid
}
}
impl Default for QueryRouter {
fn default() -> Self {
Self::new()
}
}

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//! Lightweight HTTP REST API server for OSpipe.
//!
//! Exposes the ingestion pipeline, search, routing, and health endpoints
//! that the TypeScript SDK (`@ruvector/ospipe`) expects. Built on
//! [axum](https://docs.rs/axum) and gated behind
//! `cfg(not(target_arch = "wasm32"))` since WASM targets cannot bind
//! TCP sockets.
//!
//! ## Endpoints
//!
//! | Method | Path | Description |
//! |--------|------|-------------|
//! | `POST` | `/v2/search` | Semantic / hybrid vector search |
//! | `POST` | `/v2/route` | Query routing |
//! | `GET` | `/v2/stats` | Pipeline statistics |
//! | `GET` | `/v2/health` | Health check |
//! | `GET` | `/search` | Legacy Screenpipe v1 search |
use std::sync::Arc;
use axum::{
extract::{Query, State},
http::StatusCode,
response::IntoResponse,
routing::{get, post},
Json, Router,
};
use serde::{Deserialize, Serialize};
use tokio::sync::RwLock;
use tower_http::cors::{Any, CorsLayer};
use crate::pipeline::ingestion::{IngestionPipeline, PipelineStats};
use crate::search::router::{QueryRoute, QueryRouter};
use crate::storage::vector_store::SearchResult;
// ---------------------------------------------------------------------------
// Shared state
// ---------------------------------------------------------------------------
/// Shared server state holding the pipeline behind a read-write lock.
#[derive(Clone)]
pub struct ServerState {
/// The ingestion pipeline (search + store).
pub pipeline: Arc<RwLock<IngestionPipeline>>,
/// The query router.
pub router: Arc<QueryRouter>,
/// Server start instant for uptime calculation.
pub started_at: std::time::Instant,
}
// ---------------------------------------------------------------------------
// Request / response DTOs
// ---------------------------------------------------------------------------
/// Request body for `POST /v2/search`.
#[derive(Debug, Deserialize)]
pub struct SearchRequest {
/// Natural-language query string.
pub query: String,
/// Search mode hint (semantic, keyword, hybrid).
#[serde(default = "default_search_mode")]
pub mode: String,
/// Number of results to return.
#[serde(default = "default_k")]
pub k: usize,
/// Distance metric (cosine, euclidean, dot).
#[serde(default = "default_metric")]
pub metric: String,
/// Optional metadata filters.
pub filters: Option<SearchFilters>,
/// Whether to apply MMR reranking.
#[serde(default)]
pub rerank: bool,
}
fn default_search_mode() -> String {
"semantic".to_string()
}
fn default_k() -> usize {
10
}
fn default_metric() -> String {
"cosine".to_string()
}
/// Metadata filters mirroring the TypeScript SDK `SearchFilters` type.
#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct SearchFilters {
pub app: Option<String>,
pub window: Option<String>,
pub content_type: Option<String>,
pub time_range: Option<TimeRange>,
pub monitor: Option<u32>,
pub speaker: Option<String>,
pub language: Option<String>,
}
/// ISO-8601 time range.
#[derive(Debug, Deserialize)]
pub struct TimeRange {
pub start: String,
pub end: String,
}
/// Request body for `POST /v2/route`.
#[derive(Debug, Deserialize)]
pub struct RouteRequest {
pub query: String,
}
/// Response body for `POST /v2/route`.
#[derive(Debug, Serialize, Deserialize)]
pub struct RouteResponse {
pub route: String,
}
/// Response body for `GET /v2/stats`.
#[derive(Debug, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct StatsResponse {
pub total_ingested: u64,
pub total_deduplicated: u64,
pub total_denied: u64,
pub total_redacted: u64,
pub storage_bytes: u64,
pub index_size: usize,
pub uptime: u64,
}
/// Response body for `GET /v2/health`.
#[derive(Debug, Serialize, Deserialize)]
pub struct HealthResponse {
pub status: String,
pub version: String,
pub backends: Vec<String>,
}
/// API-facing search result that matches the TypeScript SDK `SearchResult`.
#[derive(Debug, Serialize, Deserialize)]
pub struct ApiSearchResult {
pub id: String,
pub score: f32,
pub content: String,
pub source: String,
pub timestamp: String,
pub metadata: serde_json::Value,
}
/// Query parameters for `GET /search` (legacy v1).
#[derive(Debug, Deserialize)]
pub struct LegacySearchParams {
pub q: Option<String>,
pub content_type: Option<String>,
pub limit: Option<usize>,
}
/// Wrapper for JSON error responses.
#[derive(Serialize)]
struct ErrorBody {
error: String,
}
// ---------------------------------------------------------------------------
// Handlers
// ---------------------------------------------------------------------------
/// `POST /v2/search` - Semantic / hybrid search.
async fn search_handler(
State(state): State<ServerState>,
Json(req): Json<SearchRequest>,
) -> impl IntoResponse {
let pipeline = state.pipeline.read().await;
let embedding = pipeline.embedding_engine().embed(&req.query);
let k = if req.k == 0 { 10 } else { req.k };
let filter = build_search_filter(&req.filters);
let results = if filter_is_empty(&filter) {
pipeline.vector_store().search(&embedding, k)
} else {
pipeline
.vector_store()
.search_filtered(&embedding, k, &filter)
};
match results {
Ok(results) => {
let api_results: Vec<ApiSearchResult> =
results.into_iter().map(to_api_result).collect();
(StatusCode::OK, Json(api_results)).into_response()
}
Err(e) => (
StatusCode::INTERNAL_SERVER_ERROR,
Json(ErrorBody {
error: e.to_string(),
}),
)
.into_response(),
}
}
/// `POST /v2/route` - Query routing.
async fn route_handler(
State(state): State<ServerState>,
Json(req): Json<RouteRequest>,
) -> impl IntoResponse {
let route = state.router.route(&req.query);
let route_str = match route {
QueryRoute::Semantic => "semantic",
QueryRoute::Keyword => "keyword",
QueryRoute::Graph => "graph",
QueryRoute::Temporal => "temporal",
QueryRoute::Hybrid => "hybrid",
};
Json(RouteResponse {
route: route_str.to_string(),
})
}
/// `GET /v2/stats` - Pipeline statistics.
async fn stats_handler(State(state): State<ServerState>) -> impl IntoResponse {
let pipeline = state.pipeline.read().await;
let stats: &PipelineStats = pipeline.stats();
let index_size = pipeline.vector_store().len();
let uptime = state.started_at.elapsed().as_secs();
Json(StatsResponse {
total_ingested: stats.total_ingested,
total_deduplicated: stats.total_deduplicated,
total_denied: stats.total_denied,
total_redacted: stats.total_redacted,
storage_bytes: 0, // not tracked in the in-memory store
index_size,
uptime,
})
}
/// `GET /v2/health` - Health check.
async fn health_handler() -> impl IntoResponse {
Json(HealthResponse {
status: "ok".to_string(),
version: env!("CARGO_PKG_VERSION").to_string(),
backends: vec![
"hnsw".to_string(),
"keyword".to_string(),
"graph".to_string(),
],
})
}
/// `GET /search` - Legacy Screenpipe v1 search endpoint.
async fn legacy_search_handler(
State(state): State<ServerState>,
Query(params): Query<LegacySearchParams>,
) -> impl IntoResponse {
let q = match params.q {
Some(q) if !q.is_empty() => q,
_ => {
return (
StatusCode::BAD_REQUEST,
Json(ErrorBody {
error: "Missing required query parameter 'q'".to_string(),
}),
)
.into_response();
}
};
let k = params.limit.unwrap_or(10);
let pipeline = state.pipeline.read().await;
let embedding = pipeline.embedding_engine().embed(&q);
let filter = if let Some(ref ct) = params.content_type {
let mapped = match ct.as_str() {
"ocr" => "ocr",
"audio" => "transcription",
"ui" => "ui_event",
_ => "",
};
if mapped.is_empty() {
crate::storage::vector_store::SearchFilter::default()
} else {
crate::storage::vector_store::SearchFilter {
content_type: Some(mapped.to_string()),
..Default::default()
}
}
} else {
crate::storage::vector_store::SearchFilter::default()
};
let results = if filter_is_empty(&filter) {
pipeline.vector_store().search(&embedding, k)
} else {
pipeline
.vector_store()
.search_filtered(&embedding, k, &filter)
};
match results {
Ok(results) => {
let api_results: Vec<ApiSearchResult> =
results.into_iter().map(to_api_result).collect();
(StatusCode::OK, Json(api_results)).into_response()
}
Err(e) => (
StatusCode::INTERNAL_SERVER_ERROR,
Json(ErrorBody {
error: e.to_string(),
}),
)
.into_response(),
}
}
// ---------------------------------------------------------------------------
// Helpers
// ---------------------------------------------------------------------------
/// Build a `SearchFilter` from optional API filters.
fn build_search_filter(
filters: &Option<SearchFilters>,
) -> crate::storage::vector_store::SearchFilter {
let Some(f) = filters else {
return crate::storage::vector_store::SearchFilter::default();
};
let content_type = f.content_type.as_deref().map(|ct| {
match ct {
"screen" => "ocr",
"audio" => "transcription",
"ui" => "ui_event",
other => other,
}
.to_string()
});
let (time_start, time_end) = if let Some(ref tr) = f.time_range {
(
chrono::DateTime::parse_from_rfc3339(&tr.start)
.ok()
.map(|dt| dt.with_timezone(&chrono::Utc)),
chrono::DateTime::parse_from_rfc3339(&tr.end)
.ok()
.map(|dt| dt.with_timezone(&chrono::Utc)),
)
} else {
(None, None)
};
crate::storage::vector_store::SearchFilter {
app: f.app.clone(),
time_start,
time_end,
content_type,
monitor: f.monitor,
}
}
/// Check whether a filter is effectively empty (no criteria set).
fn filter_is_empty(f: &crate::storage::vector_store::SearchFilter) -> bool {
f.app.is_none()
&& f.time_start.is_none()
&& f.time_end.is_none()
&& f.content_type.is_none()
&& f.monitor.is_none()
}
/// Convert an internal `SearchResult` to the API-facing DTO.
fn to_api_result(r: SearchResult) -> ApiSearchResult {
let content = r
.metadata
.get("text")
.and_then(|v| v.as_str())
.unwrap_or("")
.to_string();
let source = r
.metadata
.get("content_type")
.and_then(|v| v.as_str())
.map(|ct| match ct {
"ocr" => "screen",
"transcription" => "audio",
"ui_event" => "ui",
other => other,
})
.unwrap_or("screen")
.to_string();
ApiSearchResult {
id: r.id.to_string(),
score: r.score,
content,
source,
timestamp: chrono::Utc::now().to_rfc3339(),
metadata: r.metadata,
}
}
// ---------------------------------------------------------------------------
// Router & startup
// ---------------------------------------------------------------------------
/// Build the axum [`Router`] with all OSpipe endpoints.
pub fn build_router(state: ServerState) -> Router {
let cors = CorsLayer::new()
.allow_origin(Any)
.allow_methods(Any)
.allow_headers(Any);
Router::new()
// v2 API
.route("/v2/search", post(search_handler))
.route("/v2/route", post(route_handler))
.route("/v2/stats", get(stats_handler))
.route("/v2/health", get(health_handler))
// Legacy v1
.route("/search", get(legacy_search_handler))
.layer(cors)
.with_state(state)
}
/// Start the OSpipe HTTP server on the given port.
///
/// This function blocks until the server is shut down (e.g. via Ctrl-C).
///
/// # Errors
///
/// Returns an error if the TCP listener cannot bind to the requested port.
pub async fn start_server(state: ServerState, port: u16) -> crate::error::Result<()> {
let app = build_router(state);
let addr = format!("0.0.0.0:{}", port);
let listener = tokio::net::TcpListener::bind(&addr)
.await
.map_err(|e| OsPipeError::Pipeline(format!("Failed to bind to {}: {}", addr, e)))?;
tracing::info!("OSpipe server listening on {}", addr);
axum::serve(listener, app)
.await
.map_err(|e| OsPipeError::Pipeline(format!("Server error: {}", e)))?;
Ok(())
}
use crate::error::OsPipeError;
// ---------------------------------------------------------------------------
// Tests
// ---------------------------------------------------------------------------
#[cfg(test)]
mod tests {
use super::*;
use crate::config::OsPipeConfig;
use axum::body::Body;
use axum::http::Request;
use tower::ServiceExt; // for oneshot
fn test_state() -> ServerState {
let config = OsPipeConfig::default();
let pipeline = IngestionPipeline::new(config).unwrap();
ServerState {
pipeline: Arc::new(RwLock::new(pipeline)),
router: Arc::new(QueryRouter::new()),
started_at: std::time::Instant::now(),
}
}
#[tokio::test]
async fn test_health_endpoint() {
let state = test_state();
let app = build_router(state);
let req = Request::builder()
.uri("/v2/health")
.body(Body::empty())
.unwrap();
let resp = app.oneshot(req).await.unwrap();
assert_eq!(resp.status(), StatusCode::OK);
let body = axum::body::to_bytes(resp.into_body(), 1024 * 1024)
.await
.unwrap();
let health: HealthResponse = serde_json::from_slice(&body).unwrap();
assert_eq!(health.status, "ok");
assert_eq!(health.version, env!("CARGO_PKG_VERSION"));
assert!(!health.backends.is_empty());
}
#[tokio::test]
async fn test_stats_endpoint() {
let state = test_state();
let app = build_router(state);
let req = Request::builder()
.uri("/v2/stats")
.body(Body::empty())
.unwrap();
let resp = app.oneshot(req).await.unwrap();
assert_eq!(resp.status(), StatusCode::OK);
let body = axum::body::to_bytes(resp.into_body(), 1024 * 1024)
.await
.unwrap();
let stats: StatsResponse = serde_json::from_slice(&body).unwrap();
assert_eq!(stats.total_ingested, 0);
assert_eq!(stats.index_size, 0);
}
#[tokio::test]
async fn test_route_endpoint() {
let state = test_state();
let app = build_router(state);
let req = Request::builder()
.method("POST")
.uri("/v2/route")
.header("content-type", "application/json")
.body(Body::from(r#"{"query": "what happened yesterday"}"#))
.unwrap();
let resp = app.oneshot(req).await.unwrap();
assert_eq!(resp.status(), StatusCode::OK);
let body = axum::body::to_bytes(resp.into_body(), 1024 * 1024)
.await
.unwrap();
let route: RouteResponse = serde_json::from_slice(&body).unwrap();
assert_eq!(route.route, "temporal");
}
#[tokio::test]
async fn test_search_endpoint_empty_store() {
let state = test_state();
let app = build_router(state);
let req = Request::builder()
.method("POST")
.uri("/v2/search")
.header("content-type", "application/json")
.body(Body::from(
r#"{"query": "test", "mode": "semantic", "k": 5}"#,
))
.unwrap();
let resp = app.oneshot(req).await.unwrap();
assert_eq!(resp.status(), StatusCode::OK);
let body = axum::body::to_bytes(resp.into_body(), 1024 * 1024)
.await
.unwrap();
let results: Vec<ApiSearchResult> = serde_json::from_slice(&body).unwrap();
assert!(results.is_empty());
}
#[tokio::test]
async fn test_legacy_search_missing_q() {
let state = test_state();
let app = build_router(state);
let req = Request::builder()
.uri("/search")
.body(Body::empty())
.unwrap();
let resp = app.oneshot(req).await.unwrap();
assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
}
#[tokio::test]
async fn test_search_with_ingested_data() {
let state = test_state();
// Ingest a frame so there is data to search
{
let mut pipeline = state.pipeline.write().await;
let frame = crate::capture::CapturedFrame::new_screen(
"VSCode",
"main.rs",
"fn main() { println!(\"hello\"); }",
0,
);
pipeline.ingest(frame).unwrap();
}
let app = build_router(state);
let req = Request::builder()
.method("POST")
.uri("/v2/search")
.header("content-type", "application/json")
.body(Body::from(r#"{"query": "fn main", "k": 5}"#))
.unwrap();
let resp = app.oneshot(req).await.unwrap();
assert_eq!(resp.status(), StatusCode::OK);
let body = axum::body::to_bytes(resp.into_body(), 1024 * 1024)
.await
.unwrap();
let results: Vec<ApiSearchResult> = serde_json::from_slice(&body).unwrap();
assert_eq!(results.len(), 1);
assert!(results[0].content.contains("fn main"));
assert_eq!(results[0].source, "screen");
}
}

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//! Embedding generation engine.
//!
//! This module provides a deterministic hash-based embedding engine for
//! development and testing. In production, this would be replaced with
//! a real model (ONNX, Candle, or an API-based provider via ruvector-core's
//! EmbeddingProvider trait).
//!
//! `EmbeddingEngine` also implements [`EmbeddingModel`]
//! so it can be used anywhere a trait-based embedding source is required.
use std::collections::hash_map::DefaultHasher;
use std::hash::{Hash, Hasher};
use super::traits::EmbeddingModel;
/// Engine that generates vector embeddings from text.
///
/// The current implementation uses a deterministic hash-based approach
/// that produces consistent embeddings for the same input text. This is
/// suitable for testing deduplication and search mechanics, but does NOT
/// provide semantic similarity. For semantic search, integrate a real
/// embedding model.
pub struct EmbeddingEngine {
dimension: usize,
}
impl EmbeddingEngine {
/// Create a new embedding engine with the given vector dimension.
pub fn new(dimension: usize) -> Self {
Self { dimension }
}
/// Generate an embedding vector for the given text.
///
/// The resulting vector is L2-normalized so that cosine similarity
/// can be computed as a simple dot product.
pub fn embed(&self, text: &str) -> Vec<f32> {
let mut vector = vec![0.0f32; self.dimension];
// Generate deterministic pseudo-random values from text hash
// We use multiple hash passes with different seeds to fill the vector.
for (i, val) in vector.iter_mut().enumerate() {
let mut hasher = DefaultHasher::new();
i.hash(&mut hasher);
text.hash(&mut hasher);
let h = hasher.finish();
// Map to [-1, 1] range
*val = ((h as f64 / u64::MAX as f64) * 2.0 - 1.0) as f32;
}
// L2-normalize the vector
normalize(&mut vector);
vector
}
/// Generate embeddings for a batch of texts.
pub fn batch_embed(&self, texts: &[&str]) -> Vec<Vec<f32>> {
texts.iter().map(|t| self.embed(t)).collect()
}
/// Return the dimensionality of embeddings produced by this engine.
pub fn dimension(&self) -> usize {
self.dimension
}
}
/// `EmbeddingEngine` satisfies [`EmbeddingModel`] so existing code can
/// pass an `&EmbeddingEngine` wherever a `&dyn EmbeddingModel` is needed.
impl EmbeddingModel for EmbeddingEngine {
fn embed(&self, text: &str) -> Vec<f32> {
EmbeddingEngine::embed(self, text)
}
fn batch_embed(&self, texts: &[&str]) -> Vec<Vec<f32>> {
EmbeddingEngine::batch_embed(self, texts)
}
fn dimension(&self) -> usize {
self.dimension
}
}
/// L2-normalize a vector in place. If the vector has zero magnitude,
/// it is left unchanged.
pub fn normalize(vector: &mut [f32]) {
let magnitude: f32 = vector.iter().map(|x| x * x).sum::<f32>().sqrt();
if magnitude > f32::EPSILON {
for val in vector.iter_mut() {
*val /= magnitude;
}
}
}
/// Compute cosine similarity between two L2-normalized vectors.
///
/// For normalized vectors, cosine similarity equals the dot product.
/// Returns a value in [-1.0, 1.0].
pub fn cosine_similarity(a: &[f32], b: &[f32]) -> f32 {
debug_assert_eq!(a.len(), b.len(), "Vectors must have equal dimensions");
a.iter().zip(b.iter()).map(|(x, y)| x * y).sum()
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_embedding_determinism() {
let engine = EmbeddingEngine::new(384);
let v1 = engine.embed("hello world");
let v2 = engine.embed("hello world");
assert_eq!(v1, v2);
}
#[test]
fn test_embedding_dimension() {
let engine = EmbeddingEngine::new(128);
let v = engine.embed("test");
assert_eq!(v.len(), 128);
}
#[test]
fn test_embedding_normalized() {
let engine = EmbeddingEngine::new(384);
let v = engine.embed("test normalization");
let magnitude: f32 = v.iter().map(|x| x * x).sum::<f32>().sqrt();
assert!(
(magnitude - 1.0).abs() < 1e-5,
"Expected unit vector, got magnitude {}",
magnitude
);
}
#[test]
fn test_cosine_similarity_identical() {
let engine = EmbeddingEngine::new(384);
let v = engine.embed("same text");
let sim = cosine_similarity(&v, &v);
assert!((sim - 1.0).abs() < 1e-5);
}
#[test]
fn test_cosine_similarity_different() {
let engine = EmbeddingEngine::new(384);
let v1 = engine.embed("hello world");
let v2 = engine.embed("completely different text about cats");
let sim = cosine_similarity(&v1, &v2);
// Hash-based embeddings won't give semantic similarity,
// but different texts should generally not be identical.
assert!(sim < 1.0);
}
#[test]
fn test_batch_embed() {
let engine = EmbeddingEngine::new(64);
let texts = vec!["one", "two", "three"];
let embeddings = engine.batch_embed(&texts);
assert_eq!(embeddings.len(), 3);
for emb in &embeddings {
assert_eq!(emb.len(), 64);
}
}
}

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//! Vector storage, embedding engine, and trait abstractions.
//!
//! Provides HNSW-backed vector storage for captured frames with
//! cosine similarity search, metadata filtering, delete/update operations,
//! and a pluggable embedding model trait.
pub mod embedding;
pub mod traits;
pub mod vector_store;
pub use embedding::EmbeddingEngine;
pub use traits::{EmbeddingModel, HashEmbeddingModel};
pub use vector_store::{SearchFilter, SearchResult, StoredEmbedding, VectorStore};
#[cfg(not(target_arch = "wasm32"))]
pub use traits::RuvectorEmbeddingModel;
#[cfg(not(target_arch = "wasm32"))]
pub use vector_store::HnswVectorStore;

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@@ -0,0 +1,203 @@
//! Embedding model trait abstraction.
//!
//! Defines the [`EmbeddingModel`] trait that all embedding providers must
//! implement, enabling pluggable embedding backends. Two implementations are
//! provided out of the box:
//!
//! - [`HashEmbeddingModel`] - deterministic hash-based embeddings (no semantic
//! similarity, suitable for testing).
//! - [`RuvectorEmbeddingModel`] (native only) - wraps ruvector-core's
//! [`EmbeddingProvider`](ruvector_core::embeddings::EmbeddingProvider) for
//! real embedding backends (hash, candle, API-based).
/// Trait for generating vector embeddings from text.
///
/// Implementations must be `Send + Sync` so they can be shared across
/// threads.
pub trait EmbeddingModel: Send + Sync {
/// Generate an embedding vector for the given text.
fn embed(&self, text: &str) -> Vec<f32>;
/// Generate embeddings for a batch of texts.
///
/// The default implementation calls [`embed`](Self::embed) for each text
/// sequentially. Implementations may override this for batched inference.
fn batch_embed(&self, texts: &[&str]) -> Vec<Vec<f32>> {
texts.iter().map(|t| self.embed(t)).collect()
}
/// Return the dimensionality of embeddings produced by this model.
fn dimension(&self) -> usize;
}
// ---------------------------------------------------------------------------
// HashEmbeddingModel (cross-platform, always available)
// ---------------------------------------------------------------------------
use std::collections::hash_map::DefaultHasher;
use std::hash::{Hash, Hasher};
use super::embedding::normalize;
/// Hash-based embedding model for testing and development.
///
/// Produces deterministic, L2-normalized vectors from text using
/// `DefaultHasher`. The vectors have no semantic meaning -- identical
/// inputs produce identical outputs, but semantically similar inputs
/// are *not* guaranteed to be close in vector space.
pub struct HashEmbeddingModel {
dimension: usize,
}
impl HashEmbeddingModel {
/// Create a new hash-based embedding model with the given dimension.
pub fn new(dimension: usize) -> Self {
Self { dimension }
}
}
impl EmbeddingModel for HashEmbeddingModel {
fn embed(&self, text: &str) -> Vec<f32> {
let mut vector = vec![0.0f32; self.dimension];
for (i, val) in vector.iter_mut().enumerate() {
let mut hasher = DefaultHasher::new();
i.hash(&mut hasher);
text.hash(&mut hasher);
let h = hasher.finish();
*val = ((h as f64 / u64::MAX as f64) * 2.0 - 1.0) as f32;
}
normalize(&mut vector);
vector
}
fn dimension(&self) -> usize {
self.dimension
}
}
// ---------------------------------------------------------------------------
// RuvectorEmbeddingModel (native only -- wraps ruvector-core)
// ---------------------------------------------------------------------------
#[cfg(not(target_arch = "wasm32"))]
mod native {
use super::EmbeddingModel;
use crate::storage::embedding::normalize;
use ruvector_core::embeddings::EmbeddingProvider;
use std::sync::Arc;
/// Embedding model backed by a ruvector-core [`EmbeddingProvider`].
///
/// This wraps any `EmbeddingProvider` (e.g. `HashEmbedding`,
/// `CandleEmbedding`, `ApiEmbedding`) behind the OSpipe
/// [`EmbeddingModel`] trait, making the provider swappable at
/// construction time.
pub struct RuvectorEmbeddingModel {
provider: Arc<dyn EmbeddingProvider>,
}
impl RuvectorEmbeddingModel {
/// Create a new model wrapping the given provider.
pub fn new(provider: Arc<dyn EmbeddingProvider>) -> Self {
Self { provider }
}
/// Create a model using ruvector-core's `HashEmbedding` with the
/// given dimension. This is the simplest way to get started on
/// native targets.
pub fn hash(dimensions: usize) -> Self {
let provider = Arc::new(ruvector_core::embeddings::HashEmbedding::new(dimensions));
Self { provider }
}
}
impl EmbeddingModel for RuvectorEmbeddingModel {
fn embed(&self, text: &str) -> Vec<f32> {
match self.provider.embed(text) {
Ok(mut v) => {
normalize(&mut v);
v
}
Err(e) => {
tracing::warn!("Embedding provider failed, returning zero vector: {}", e);
vec![0.0f32; self.provider.dimensions()]
}
}
}
fn dimension(&self) -> usize {
self.provider.dimensions()
}
}
}
#[cfg(not(target_arch = "wasm32"))]
pub use native::RuvectorEmbeddingModel;
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_hash_embedding_model_determinism() {
let model = HashEmbeddingModel::new(128);
let v1 = model.embed("hello world");
let v2 = model.embed("hello world");
assert_eq!(v1, v2);
}
#[test]
fn test_hash_embedding_model_dimension() {
let model = HashEmbeddingModel::new(64);
assert_eq!(model.dimension(), 64);
let v = model.embed("test");
assert_eq!(v.len(), 64);
}
#[test]
fn test_hash_embedding_model_normalized() {
let model = HashEmbeddingModel::new(384);
let v = model.embed("normalization test");
let mag: f32 = v.iter().map(|x| x * x).sum::<f32>().sqrt();
assert!(
(mag - 1.0).abs() < 1e-5,
"Expected unit vector, got magnitude {}",
mag,
);
}
#[test]
fn test_batch_embed() {
let model = HashEmbeddingModel::new(64);
let texts: Vec<&str> = vec!["one", "two", "three"];
let embeddings = model.batch_embed(&texts);
assert_eq!(embeddings.len(), 3);
for emb in &embeddings {
assert_eq!(emb.len(), 64);
}
}
#[test]
fn test_trait_object_dispatch() {
let model: Box<dyn EmbeddingModel> = Box::new(HashEmbeddingModel::new(32));
let v = model.embed("dispatch test");
assert_eq!(v.len(), 32);
}
#[cfg(not(target_arch = "wasm32"))]
#[test]
fn test_ruvector_embedding_model() {
let model = RuvectorEmbeddingModel::hash(128);
let v = model.embed("ruvector test");
assert_eq!(v.len(), 128);
assert_eq!(model.dimension(), 128);
// Should be normalized
let mag: f32 = v.iter().map(|x| x * x).sum::<f32>().sqrt();
assert!(
(mag - 1.0).abs() < 1e-4,
"Expected unit vector, got magnitude {}",
mag,
);
}
}

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//! Vector storage with cosine similarity search.
//!
//! This module provides two implementations:
//!
//! - [`VectorStore`] -- brute-force O(n) linear scan (cross-platform,
//! works on WASM).
//! - [`HnswVectorStore`] (native only) -- wraps ruvector-core's HNSW
//! index for O(log n) approximate nearest-neighbor search.
//!
//! Both implementations support insert, search, filtered search, delete,
//! and metadata update.
use crate::capture::CapturedFrame;
use crate::config::StorageConfig;
use crate::error::{OsPipeError, Result};
use crate::storage::embedding::cosine_similarity;
use chrono::{DateTime, Utc};
use serde::{Deserialize, Serialize};
use uuid::Uuid;
/// A vector embedding stored with its metadata.
#[derive(Debug, Clone)]
pub struct StoredEmbedding {
/// Unique identifier matching the source frame.
pub id: Uuid,
/// The embedding vector.
pub vector: Vec<f32>,
/// JSON metadata about the source frame.
pub metadata: serde_json::Value,
/// When the source frame was captured.
pub timestamp: DateTime<Utc>,
}
/// A search result returned from the vector store.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SearchResult {
/// ID of the matched embedding.
pub id: Uuid,
/// Cosine similarity score (higher is more similar).
pub score: f32,
/// Metadata of the matched embedding.
pub metadata: serde_json::Value,
}
/// Filter criteria for narrowing search results.
#[derive(Debug, Clone, Default)]
pub struct SearchFilter {
/// Filter by application name.
pub app: Option<String>,
/// Filter by start time (inclusive).
pub time_start: Option<DateTime<Utc>>,
/// Filter by end time (inclusive).
pub time_end: Option<DateTime<Utc>>,
/// Filter by content type (e.g., "ocr", "transcription", "ui_event").
pub content_type: Option<String>,
/// Filter by monitor index.
pub monitor: Option<u32>,
}
// ===========================================================================
// VectorStore -- brute-force fallback (cross-platform)
// ===========================================================================
/// In-memory vector store with brute-force cosine similarity search.
///
/// This is the cross-platform fallback that also works on WASM targets.
/// On native targets, prefer [`HnswVectorStore`] for large datasets.
pub struct VectorStore {
config: StorageConfig,
embeddings: Vec<StoredEmbedding>,
dimension: usize,
}
impl VectorStore {
/// Create a new vector store with the given configuration.
pub fn new(config: StorageConfig) -> Result<Self> {
let dimension = config.embedding_dim;
if dimension == 0 {
return Err(OsPipeError::Storage(
"embedding_dim must be greater than 0".to_string(),
));
}
Ok(Self {
config,
embeddings: Vec::new(),
dimension,
})
}
/// Insert a captured frame with its pre-computed embedding.
pub fn insert(&mut self, frame: &CapturedFrame, embedding: &[f32]) -> Result<()> {
if embedding.len() != self.dimension {
return Err(OsPipeError::Storage(format!(
"Expected embedding dimension {}, got {}",
self.dimension,
embedding.len()
)));
}
let metadata = serde_json::json!({
"text": frame.text_content(),
"content_type": frame.content_type(),
"app_name": frame.metadata.app_name,
"window_title": frame.metadata.window_title,
"monitor_id": frame.metadata.monitor_id,
"confidence": frame.metadata.confidence,
});
self.embeddings.push(StoredEmbedding {
id: frame.id,
vector: embedding.to_vec(),
metadata,
timestamp: frame.timestamp,
});
Ok(())
}
/// Search for the k most similar embeddings to the query vector.
pub fn search(&self, query_embedding: &[f32], k: usize) -> Result<Vec<SearchResult>> {
if query_embedding.len() != self.dimension {
return Err(OsPipeError::Search(format!(
"Expected query dimension {}, got {}",
self.dimension,
query_embedding.len()
)));
}
let mut scored: Vec<(usize, f32)> = self
.embeddings
.iter()
.enumerate()
.map(|(i, stored)| {
let score = cosine_similarity(query_embedding, &stored.vector);
(i, score)
})
.collect();
// Sort by score descending
scored.sort_by(|a, b| b.1.partial_cmp(&a.1).unwrap_or(std::cmp::Ordering::Equal));
scored.truncate(k);
Ok(scored
.into_iter()
.map(|(i, score)| {
let stored = &self.embeddings[i];
SearchResult {
id: stored.id,
score,
metadata: stored.metadata.clone(),
}
})
.collect())
}
/// Search with metadata filtering applied before scoring.
pub fn search_filtered(
&self,
query: &[f32],
k: usize,
filter: &SearchFilter,
) -> Result<Vec<SearchResult>> {
if query.len() != self.dimension {
return Err(OsPipeError::Search(format!(
"Expected query dimension {}, got {}",
self.dimension,
query.len()
)));
}
let mut scored: Vec<(usize, f32)> = self
.embeddings
.iter()
.enumerate()
.filter(|(_, stored)| matches_filter(stored, filter))
.map(|(i, stored)| {
let score = cosine_similarity(query, &stored.vector);
(i, score)
})
.collect();
scored.sort_by(|a, b| b.1.partial_cmp(&a.1).unwrap_or(std::cmp::Ordering::Equal));
scored.truncate(k);
Ok(scored
.into_iter()
.map(|(i, score)| {
let stored = &self.embeddings[i];
SearchResult {
id: stored.id,
score,
metadata: stored.metadata.clone(),
}
})
.collect())
}
/// Delete a stored embedding by its ID.
///
/// Returns `true` if the embedding was found and removed, `false`
/// if no embedding with the given ID existed.
pub fn delete(&mut self, id: &Uuid) -> Result<bool> {
let before = self.embeddings.len();
self.embeddings.retain(|e| e.id != *id);
Ok(self.embeddings.len() < before)
}
/// Update the metadata of a stored embedding.
///
/// The provided `metadata` value completely replaces the old metadata
/// for the entry identified by `id`. Returns an error if the ID is
/// not found.
pub fn update_metadata(&mut self, id: &Uuid, metadata: serde_json::Value) -> Result<()> {
match self.embeddings.iter_mut().find(|e| e.id == *id) {
Some(entry) => {
entry.metadata = metadata;
Ok(())
}
None => Err(OsPipeError::Storage(format!(
"No embedding found with id {}",
id
))),
}
}
/// Return the number of stored embeddings.
pub fn len(&self) -> usize {
self.embeddings.len()
}
/// Return true if the store contains no embeddings.
pub fn is_empty(&self) -> bool {
self.embeddings.is_empty()
}
/// Return the configured embedding dimension.
pub fn dimension(&self) -> usize {
self.dimension
}
/// Return a reference to the storage configuration.
pub fn config(&self) -> &StorageConfig {
&self.config
}
/// Get a stored embedding by its ID.
pub fn get(&self, id: &Uuid) -> Option<&StoredEmbedding> {
self.embeddings.iter().find(|e| e.id == *id)
}
}
// ===========================================================================
// HnswVectorStore -- native-only HNSW-backed store
// ===========================================================================
#[cfg(not(target_arch = "wasm32"))]
mod native {
use super::*;
use ruvector_core::index::hnsw::HnswIndex;
use ruvector_core::index::VectorIndex;
use ruvector_core::types::{DistanceMetric, HnswConfig};
use std::collections::HashMap;
/// HNSW-backed vector store using ruvector-core.
///
/// Uses approximate nearest-neighbor search for O(log n) query time.
/// Metadata and timestamps are stored in a side-car `HashMap`
/// alongside the HNSW index.
pub struct HnswVectorStore {
index: HnswIndex,
/// Side-car storage: id -> (metadata, timestamp, vector)
entries: HashMap<Uuid, StoredEmbedding>,
dimension: usize,
config: StorageConfig,
ef_search: usize,
}
impl HnswVectorStore {
/// Create a new HNSW-backed vector store.
pub fn new(config: StorageConfig) -> Result<Self> {
let dimension = config.embedding_dim;
if dimension == 0 {
return Err(OsPipeError::Storage(
"embedding_dim must be greater than 0".to_string(),
));
}
let hnsw_config = HnswConfig {
m: config.hnsw_m,
ef_construction: config.hnsw_ef_construction,
ef_search: config.hnsw_ef_search,
max_elements: 10_000_000,
};
let index = HnswIndex::new(dimension, DistanceMetric::Cosine, hnsw_config)
.map_err(|e| OsPipeError::Storage(format!("Failed to create HNSW index: {}", e)))?;
let ef_search = config.hnsw_ef_search;
Ok(Self {
index,
entries: HashMap::new(),
dimension,
config,
ef_search,
})
}
/// Insert a captured frame with its pre-computed embedding.
pub fn insert(&mut self, frame: &CapturedFrame, embedding: &[f32]) -> Result<()> {
if embedding.len() != self.dimension {
return Err(OsPipeError::Storage(format!(
"Expected embedding dimension {}, got {}",
self.dimension,
embedding.len()
)));
}
let metadata = serde_json::json!({
"text": frame.text_content(),
"content_type": frame.content_type(),
"app_name": frame.metadata.app_name,
"window_title": frame.metadata.window_title,
"monitor_id": frame.metadata.monitor_id,
"confidence": frame.metadata.confidence,
});
let id_str = frame.id.to_string();
// Insert into HNSW index
self.index
.add(id_str, embedding.to_vec())
.map_err(|e| OsPipeError::Storage(format!("HNSW insert failed: {}", e)))?;
// Store side-car data
self.entries.insert(
frame.id,
StoredEmbedding {
id: frame.id,
vector: embedding.to_vec(),
metadata,
timestamp: frame.timestamp,
},
);
Ok(())
}
/// Search for the k most similar embeddings using HNSW ANN search.
pub fn search(&self, query: &[f32], k: usize) -> Result<Vec<SearchResult>> {
if query.len() != self.dimension {
return Err(OsPipeError::Search(format!(
"Expected query dimension {}, got {}",
self.dimension,
query.len()
)));
}
let hnsw_results = self
.index
.search_with_ef(query, k, self.ef_search)
.map_err(|e| OsPipeError::Search(format!("HNSW search failed: {}", e)))?;
let mut results = Vec::with_capacity(hnsw_results.len());
for hr in hnsw_results {
// hr.id is a String representation of the Uuid
if let Ok(uuid) = Uuid::parse_str(&hr.id) {
if let Some(stored) = self.entries.get(&uuid) {
// ruvector-core HNSW returns distance (lower = closer
// for cosine). Convert to similarity: 1.0 - distance.
let similarity = 1.0 - hr.score;
results.push(SearchResult {
id: uuid,
score: similarity,
metadata: stored.metadata.clone(),
});
}
}
}
// Sort descending by similarity score
results.sort_by(|a, b| {
b.score
.partial_cmp(&a.score)
.unwrap_or(std::cmp::Ordering::Equal)
});
Ok(results)
}
/// Search with post-filtering on metadata.
///
/// HNSW does not natively support metadata filters, so we
/// over-fetch and filter after the ANN search.
pub fn search_filtered(
&self,
query: &[f32],
k: usize,
filter: &SearchFilter,
) -> Result<Vec<SearchResult>> {
// Over-fetch to account for filtering
let over_k = (k * 4).max(k + 20);
let candidates = self.search(query, over_k)?;
let mut filtered: Vec<SearchResult> = candidates
.into_iter()
.filter(|r| {
if let Some(stored) = self.entries.get(&r.id) {
matches_filter(stored, filter)
} else {
false
}
})
.take(k)
.collect();
filtered.sort_by(|a, b| {
b.score
.partial_cmp(&a.score)
.unwrap_or(std::cmp::Ordering::Equal)
});
Ok(filtered)
}
/// Delete a stored embedding by its ID.
///
/// Returns `true` if the embedding was found and removed, `false`
/// otherwise. The HNSW graph link is removed via soft-delete (the
/// underlying `hnsw_rs` does not support hard deletion).
pub fn delete(&mut self, id: &Uuid) -> Result<bool> {
let id_str = id.to_string();
let removed_from_index = self
.index
.remove(&id_str)
.map_err(|e| OsPipeError::Storage(format!("HNSW delete failed: {}", e)))?;
let removed_from_entries = self.entries.remove(id).is_some();
Ok(removed_from_index || removed_from_entries)
}
/// Update the metadata of a stored embedding.
///
/// Returns an error if no embedding with the given ID exists.
pub fn update_metadata(&mut self, id: &Uuid, metadata: serde_json::Value) -> Result<()> {
match self.entries.get_mut(id) {
Some(entry) => {
entry.metadata = metadata;
Ok(())
}
None => Err(OsPipeError::Storage(format!(
"No embedding found with id {}",
id
))),
}
}
/// Return the number of stored embeddings.
pub fn len(&self) -> usize {
self.entries.len()
}
/// Return true if the store is empty.
pub fn is_empty(&self) -> bool {
self.entries.is_empty()
}
/// Return the configured embedding dimension.
pub fn dimension(&self) -> usize {
self.dimension
}
/// Return a reference to the storage configuration.
pub fn config(&self) -> &StorageConfig {
&self.config
}
/// Get a stored embedding by its ID.
pub fn get(&self, id: &Uuid) -> Option<&StoredEmbedding> {
self.entries.get(id)
}
}
}
#[cfg(not(target_arch = "wasm32"))]
pub use native::HnswVectorStore;
// ===========================================================================
// Shared helpers
// ===========================================================================
/// Check whether a stored embedding matches the given filter.
fn matches_filter(stored: &StoredEmbedding, filter: &SearchFilter) -> bool {
if let Some(ref app) = filter.app {
let stored_app = stored
.metadata
.get("app_name")
.and_then(|v| v.as_str())
.unwrap_or("");
if stored_app != app {
return false;
}
}
if let Some(start) = filter.time_start {
if stored.timestamp < start {
return false;
}
}
if let Some(end) = filter.time_end {
if stored.timestamp > end {
return false;
}
}
if let Some(ref ct) = filter.content_type {
let stored_ct = stored
.metadata
.get("content_type")
.and_then(|v| v.as_str())
.unwrap_or("");
if stored_ct != ct {
return false;
}
}
if let Some(monitor) = filter.monitor {
let stored_monitor = stored
.metadata
.get("monitor_id")
.and_then(|v| v.as_u64())
.map(|v| v as u32);
if stored_monitor != Some(monitor) {
return false;
}
}
true
}

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@@ -0,0 +1,265 @@
//! WASM-bindgen exports for OSpipe browser usage.
//!
//! This module exposes a self-contained vector store that runs entirely in the
//! browser via WebAssembly. It supports embedding insertion, semantic search
//! with optional time-range filtering, deduplication checks, simple text
//! embedding (hash-based, suitable for demos), content safety checks, and
//! query routing heuristics.
use serde::{Deserialize, Serialize};
use wasm_bindgen::prelude::*;
use super::helpers;
/// Initialize WASM module: installs `console_error_panic_hook` so that Rust
/// panics produce readable error messages in the browser developer console
/// instead of the default `unreachable` with no context.
#[wasm_bindgen(start)]
pub fn init() {
#[cfg(feature = "console_error_panic_hook")]
console_error_panic_hook::set_once();
}
// ---------------------------------------------------------------------------
// Internal data structures
// ---------------------------------------------------------------------------
/// A single stored embedding with metadata.
struct WasmEmbedding {
id: String,
vector: Vec<f32>,
metadata: String, // JSON string
timestamp: f64, // Unix milliseconds
}
/// A search result returned to JavaScript.
#[derive(Serialize, Deserialize)]
struct SearchHit {
id: String,
score: f64,
metadata: String,
timestamp: f64,
}
// ---------------------------------------------------------------------------
// Public WASM API
// ---------------------------------------------------------------------------
/// OSpipe WASM -- browser-based personal AI memory search.
#[wasm_bindgen]
pub struct OsPipeWasm {
dimension: usize,
embeddings: Vec<WasmEmbedding>,
}
#[wasm_bindgen]
impl OsPipeWasm {
// -- lifecycle ---------------------------------------------------------
/// Create a new OsPipeWasm instance with the given embedding dimension.
#[wasm_bindgen(constructor)]
pub fn new(dimension: usize) -> Self {
Self {
dimension,
embeddings: Vec::new(),
}
}
// -- insertion ---------------------------------------------------------
/// Insert a frame embedding into the store.
///
/// * `id` - Unique identifier for this frame.
/// * `embedding` - Float32 vector whose length must match `dimension`.
/// * `metadata` - Arbitrary JSON string attached to this frame.
/// * `timestamp` - Unix timestamp in milliseconds.
pub fn insert(
&mut self,
id: &str,
embedding: &[f32],
metadata: &str,
timestamp: f64,
) -> Result<(), JsValue> {
if embedding.len() != self.dimension {
return Err(JsValue::from_str(&format!(
"Embedding dimension mismatch: expected {}, got {}",
self.dimension,
embedding.len()
)));
}
self.embeddings.push(WasmEmbedding {
id: id.to_string(),
vector: embedding.to_vec(),
metadata: metadata.to_string(),
timestamp,
});
Ok(())
}
// -- search ------------------------------------------------------------
/// Semantic search by embedding vector. Returns the top-k results as a
/// JSON-serialized `JsValue` array of `{ id, score, metadata, timestamp }`.
pub fn search(&self, query_embedding: &[f32], k: usize) -> Result<JsValue, JsValue> {
if query_embedding.len() != self.dimension {
return Err(JsValue::from_str(&format!(
"Query dimension mismatch: expected {}, got {}",
self.dimension,
query_embedding.len()
)));
}
let mut scored: Vec<(usize, f32)> = self
.embeddings
.iter()
.enumerate()
.map(|(i, e)| (i, helpers::cosine_similarity(query_embedding, &e.vector)))
.collect();
// Sort descending by similarity.
scored.sort_by(|a, b| b.1.partial_cmp(&a.1).unwrap_or(std::cmp::Ordering::Equal));
let hits: Vec<SearchHit> = scored
.into_iter()
.take(k)
.map(|(i, score)| {
let e = &self.embeddings[i];
SearchHit {
id: e.id.clone(),
score: score as f64,
metadata: e.metadata.clone(),
timestamp: e.timestamp,
}
})
.collect();
serde_wasm_bindgen::to_value(&hits).map_err(|e| JsValue::from_str(&e.to_string()))
}
/// Search with a time-range filter. Only embeddings whose timestamp falls
/// within `[start_time, end_time]` (inclusive) are considered.
pub fn search_filtered(
&self,
query_embedding: &[f32],
k: usize,
start_time: f64,
end_time: f64,
) -> Result<JsValue, JsValue> {
if query_embedding.len() != self.dimension {
return Err(JsValue::from_str(&format!(
"Query dimension mismatch: expected {}, got {}",
self.dimension,
query_embedding.len()
)));
}
let mut scored: Vec<(usize, f32)> = self
.embeddings
.iter()
.enumerate()
.filter(|(_, e)| e.timestamp >= start_time && e.timestamp <= end_time)
.map(|(i, e)| (i, helpers::cosine_similarity(query_embedding, &e.vector)))
.collect();
scored.sort_by(|a, b| b.1.partial_cmp(&a.1).unwrap_or(std::cmp::Ordering::Equal));
let hits: Vec<SearchHit> = scored
.into_iter()
.take(k)
.map(|(i, score)| {
let e = &self.embeddings[i];
SearchHit {
id: e.id.clone(),
score: score as f64,
metadata: e.metadata.clone(),
timestamp: e.timestamp,
}
})
.collect();
serde_wasm_bindgen::to_value(&hits).map_err(|e| JsValue::from_str(&e.to_string()))
}
// -- deduplication -----------------------------------------------------
/// Check whether `embedding` is a near-duplicate of any stored embedding.
///
/// Returns `true` when the cosine similarity to any existing embedding is
/// greater than or equal to `threshold`.
pub fn is_duplicate(&self, embedding: &[f32], threshold: f32) -> bool {
self.embeddings
.iter()
.any(|e| helpers::cosine_similarity(embedding, &e.vector) >= threshold)
}
// -- stats / accessors -------------------------------------------------
/// Number of stored embeddings.
pub fn len(&self) -> usize {
self.embeddings.len()
}
/// Returns true if no embeddings are stored.
pub fn is_empty(&self) -> bool {
self.embeddings.is_empty()
}
/// Return pipeline statistics as a JSON string.
pub fn stats(&self) -> String {
serde_json::json!({
"dimension": self.dimension,
"total_embeddings": self.embeddings.len(),
"memory_estimate_bytes": self.embeddings.len() * (self.dimension * 4 + 128),
})
.to_string()
}
// -- text embedding (demo / hash-based) --------------------------------
/// Generate a simple deterministic embedding from text.
///
/// This uses a hash-based approach and is **not** a real neural embedding.
/// Suitable for demos and testing only.
pub fn embed_text(&self, text: &str) -> Vec<f32> {
helpers::hash_embed(text, self.dimension)
}
/// Batch-embed multiple texts.
///
/// `texts` must be a JS `Array<string>`. Returns a JS `Array<Float32Array>`.
pub fn batch_embed(&self, texts: JsValue) -> Result<JsValue, JsValue> {
let text_list: Vec<String> = serde_wasm_bindgen::from_value(texts)
.map_err(|e| JsValue::from_str(&format!("Failed to deserialize texts: {e}")))?;
let results: Vec<Vec<f32>> = text_list
.iter()
.map(|t| helpers::hash_embed(t, self.dimension))
.collect();
serde_wasm_bindgen::to_value(&results).map_err(|e| JsValue::from_str(&e.to_string()))
}
// -- safety ------------------------------------------------------------
/// Run a lightweight safety check on `content`.
///
/// Returns one of:
/// - `"deny"` -- content contains patterns that should not be stored
/// (e.g. credit card numbers, SSNs).
/// - `"redact"` -- content contains potentially sensitive information
/// that could be redacted.
/// - `"allow"` -- content appears safe.
pub fn safety_check(&self, content: &str) -> String {
helpers::safety_classify(content).to_string()
}
// -- query routing -----------------------------------------------------
/// Route a query string to the optimal search backend based on simple
/// keyword heuristics.
///
/// Returns one of: `"Graph"`, `"Temporal"`, `"Keyword"`, `"Semantic"`.
pub fn route_query(&self, query: &str) -> String {
helpers::route_query(query).to_string()
}
}

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//! Pure helper functions used by the WASM bindings.
//!
//! These functions have no WASM dependencies and can be tested on any target.
/// Cosine similarity between two vectors.
///
/// Returns 0.0 when either vector has zero magnitude.
pub fn cosine_similarity(a: &[f32], b: &[f32]) -> f32 {
debug_assert_eq!(a.len(), b.len(), "vectors must be same length");
let mut dot: f32 = 0.0;
let mut mag_a: f32 = 0.0;
let mut mag_b: f32 = 0.0;
for i in 0..a.len() {
dot += a[i] * b[i];
mag_a += a[i] * a[i];
mag_b += b[i] * b[i];
}
let denom = mag_a.sqrt() * mag_b.sqrt();
if denom == 0.0 {
0.0
} else {
dot / denom
}
}
/// Produce a deterministic pseudo-embedding from text using a simple hash.
///
/// The algorithm:
/// 1. Hash each character position into a seed.
/// 2. Use the seed to generate a float in [-1, 1].
/// 3. L2-normalise the resulting vector.
///
/// This is NOT a real embedding model -- it is only useful for demos and
/// testing that the WASM plumbing works end-to-end.
pub fn hash_embed(text: &str, dimension: usize) -> Vec<f32> {
let mut vec = vec![0.0f32; dimension];
let bytes = text.as_bytes();
for (i, slot) in vec.iter_mut().enumerate() {
// Mix byte values into the slot.
let mut h: u64 = 0xcbf29ce484222325; // FNV-1a offset basis
for (j, &b) in bytes.iter().enumerate() {
h ^= (b as u64)
.wrapping_add((i as u64).wrapping_mul(31))
.wrapping_add(j as u64);
h = h.wrapping_mul(0x100000001b3); // FNV-1a prime
}
// Map to [-1, 1].
*slot = ((h as i64) as f64 / i64::MAX as f64) as f32;
}
// L2 normalise.
let mag: f32 = vec.iter().map(|v| v * v).sum::<f32>().sqrt();
if mag > 0.0 {
for v in &mut vec {
*v /= mag;
}
}
vec
}
/// Check for credit-card-like patterns: 4 groups of 4 digits separated by
/// spaces or dashes (or no separator).
pub fn has_credit_card_pattern(content: &str) -> bool {
// Strategy: scan for sequences of 16 digits (possibly with separators).
let digits_only: String = content.chars().filter(|c| c.is_ascii_digit()).collect();
// Quick check: must have at least 16 digits somewhere.
if digits_only.len() < 16 {
return false;
}
// Look for the formatted pattern: DDDD[-/ ]DDDD[-/ ]DDDD[-/ ]DDDD
// We do a simple windowed scan on the original string.
let chars: Vec<char> = content.chars().collect();
let len = chars.len();
let mut i = 0;
while i < len {
if let Some(end) = try_parse_cc_at(&chars, i) {
// Verify the group doesn't continue with more digits (avoid
// matching longer numeric strings that aren't cards).
if end >= len || !chars[end].is_ascii_digit() {
// Also make sure it didn't start as part of a longer number.
if i == 0 || !chars[i - 1].is_ascii_digit() {
return true;
}
}
i = end;
} else {
i += 1;
}
}
false
}
/// Try to parse a credit-card-like pattern starting at position `start`.
/// Returns the index past the last consumed character on success.
fn try_parse_cc_at(chars: &[char], start: usize) -> Option<usize> {
let mut pos = start;
for group in 0..4 {
// Expect 4 digits.
for _ in 0..4 {
if pos >= chars.len() || !chars[pos].is_ascii_digit() {
return None;
}
pos += 1;
}
// After the first 3 groups, allow an optional separator.
if group < 3 && pos < chars.len() && (chars[pos] == '-' || chars[pos] == ' ') {
pos += 1;
}
}
Some(pos)
}
/// Check for SSN-like patterns: XXX-XX-XXXX
pub fn has_ssn_pattern(content: &str) -> bool {
let chars: Vec<char> = content.chars().collect();
let len = chars.len();
// Pattern length: 3 + 1 + 2 + 1 + 4 = 11
if len < 11 {
return false;
}
for i in 0..=len - 11 {
// Must not be preceded by a digit.
if i > 0 && chars[i - 1].is_ascii_digit() {
continue;
}
// Must not be followed by a digit.
if i + 11 < len && chars[i + 11].is_ascii_digit() {
continue;
}
if chars[i].is_ascii_digit()
&& chars[i + 1].is_ascii_digit()
&& chars[i + 2].is_ascii_digit()
&& chars[i + 3] == '-'
&& chars[i + 4].is_ascii_digit()
&& chars[i + 5].is_ascii_digit()
&& chars[i + 6] == '-'
&& chars[i + 7].is_ascii_digit()
&& chars[i + 8].is_ascii_digit()
&& chars[i + 9].is_ascii_digit()
&& chars[i + 10].is_ascii_digit()
{
return true;
}
}
false
}
/// Simple safety classification for content.
///
/// Returns `"deny"`, `"redact"`, or `"allow"`.
///
/// Classification matches native `SafetyGate::check`:
/// - Credit card patterns -> "redact"
/// - SSN patterns -> "redact"
/// - Email patterns -> "redact"
/// - Custom sensitive keywords -> "deny"
pub fn safety_classify(content: &str) -> &'static str {
// PII patterns are redacted (matching native SafetyGate behavior)
if has_credit_card_pattern(content) {
return "redact";
}
if has_ssn_pattern(content) {
return "redact";
}
if has_email_pattern(content) {
return "redact";
}
// Custom sensitive keywords are denied (matching native custom_patterns -> Deny)
let lower = content.to_lowercase();
let deny_keywords = [
"password",
"secret",
"api_key",
"api-key",
"apikey",
"token",
"private_key",
"private-key",
];
for kw in &deny_keywords {
if lower.contains(kw) {
return "deny";
}
}
"allow"
}
/// Check for email-like patterns: local@domain.tld
pub fn has_email_pattern(content: &str) -> bool {
let chars: Vec<char> = content.chars().collect();
let len = chars.len();
for i in 0..len {
if chars[i] == '@' {
// Must have at least one local-part char before '@'
if i == 0 || chars[i - 1].is_whitespace() {
continue;
}
// Must have at least one domain char and a dot after '@'
if i + 1 >= len || chars[i + 1].is_whitespace() {
continue;
}
// Scan backwards to find start of local part
let mut start = i;
while start > 0 && is_email_char(chars[start - 1]) {
start -= 1;
}
if start == i {
continue;
}
// Scan forwards to find end of domain
let mut end = i + 1;
let mut has_dot = false;
while end < len && is_domain_char(chars[end]) {
if chars[end] == '.' {
has_dot = true;
}
end += 1;
}
if has_dot && end > i + 3 {
return true;
}
}
}
false
}
fn is_email_char(c: char) -> bool {
c.is_ascii_alphanumeric() || c == '.' || c == '+' || c == '-' || c == '_'
}
fn is_domain_char(c: char) -> bool {
c.is_ascii_alphanumeric() || c == '.' || c == '-'
}
/// Route a query string to the optimal search backend.
///
/// Returns `"Temporal"`, `"Graph"`, `"Keyword"`, or `"Hybrid"`.
///
/// Routing heuristics (matching native `QueryRouter::route`):
/// - Temporal keywords ("yesterday", "last week", etc.) -> Temporal
/// - Graph keywords ("related to", "connected to", etc.) -> Graph
/// - Quoted exact phrases -> Keyword
/// - Short queries (1-2 words) -> Keyword
/// - Everything else -> Hybrid
pub fn route_query(query: &str) -> &'static str {
let lower = query.to_lowercase();
let word_count = lower.split_whitespace().count();
// Temporal patterns (checked first, matching native router order)
let temporal_keywords = [
"yesterday",
"last week",
"last month",
"today",
"this morning",
"this afternoon",
"hours ago",
"minutes ago",
"days ago",
"between",
"before",
"after",
];
for kw in &temporal_keywords {
if lower.contains(kw) {
return "Temporal";
}
}
// Graph patterns
let graph_keywords = [
"related to",
"connected to",
"linked with",
"associated with",
"relationship between",
];
for kw in &graph_keywords {
if lower.contains(kw) {
return "Graph";
}
}
// Exact phrase (quoted)
if query.starts_with('"') && query.ends_with('"') {
return "Keyword";
}
// Very short queries are better served by keyword
if word_count <= 2 {
return "Keyword";
}
// Default: hybrid combines the best of both
"Hybrid"
}
// ---------------------------------------------------------------------------
// Unit tests
// ---------------------------------------------------------------------------
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_cosine_similarity_identical() {
let v = vec![1.0, 2.0, 3.0];
let sim = cosine_similarity(&v, &v);
assert!((sim - 1.0).abs() < 1e-6);
}
#[test]
fn test_cosine_similarity_orthogonal() {
let a = vec![1.0, 0.0];
let b = vec![0.0, 1.0];
let sim = cosine_similarity(&a, &b);
assert!(sim.abs() < 1e-6);
}
#[test]
fn test_cosine_similarity_opposite() {
let a = vec![1.0, 0.0];
let b = vec![-1.0, 0.0];
let sim = cosine_similarity(&a, &b);
assert!((sim + 1.0).abs() < 1e-6);
}
#[test]
fn test_cosine_similarity_zero_vector() {
let a = vec![0.0, 0.0];
let b = vec![1.0, 2.0];
assert_eq!(cosine_similarity(&a, &b), 0.0);
}
#[test]
fn test_hash_embed_deterministic() {
let v1 = hash_embed("hello world", 128);
let v2 = hash_embed("hello world", 128);
assert_eq!(v1, v2);
}
#[test]
fn test_hash_embed_normalized() {
let v = hash_embed("test text", 64);
let mag: f32 = v.iter().map(|x| x * x).sum::<f32>().sqrt();
assert!(
(mag - 1.0).abs() < 1e-4,
"magnitude should be ~1.0, got {mag}"
);
}
#[test]
fn test_hash_embed_different_texts_differ() {
let v1 = hash_embed("hello", 64);
let v2 = hash_embed("world", 64);
assert_ne!(v1, v2);
}
#[test]
fn test_has_credit_card_pattern() {
assert!(has_credit_card_pattern("my card is 1234 5678 9012 3456"));
assert!(has_credit_card_pattern("cc: 1234-5678-9012-3456"));
assert!(has_credit_card_pattern("number 1234567890123456 here"));
assert!(!has_credit_card_pattern("short 123456"));
assert!(!has_credit_card_pattern("no cards here"));
}
#[test]
fn test_has_ssn_pattern() {
assert!(has_ssn_pattern("ssn is 123-45-6789"));
assert!(has_ssn_pattern("start 999-99-9999 end"));
assert!(!has_ssn_pattern("not a ssn 12-345-6789"));
assert!(!has_ssn_pattern("1234-56-7890")); // preceded by extra digit
assert!(!has_ssn_pattern("no ssn here"));
}
#[test]
fn test_safety_classify_redact_cc() {
assert_eq!(safety_classify("pay with 4111-1111-1111-1111"), "redact");
}
#[test]
fn test_safety_classify_redact_ssn() {
assert_eq!(safety_classify("my ssn 123-45-6789"), "redact");
}
#[test]
fn test_safety_classify_redact_email() {
assert_eq!(safety_classify("contact user@example.com"), "redact");
}
#[test]
fn test_safety_classify_deny_password() {
assert_eq!(safety_classify("my password is foo"), "deny");
}
#[test]
fn test_safety_classify_deny_api_key() {
assert_eq!(safety_classify("api_key: sk-abc123"), "deny");
}
#[test]
fn test_safety_classify_allow() {
assert_eq!(safety_classify("the weather is nice"), "allow");
}
#[test]
fn test_has_email_pattern() {
assert!(has_email_pattern("contact user@example.com please"));
assert!(has_email_pattern("email: alice@test.org"));
assert!(!has_email_pattern("not an email"));
assert!(!has_email_pattern("@ alone"));
assert!(!has_email_pattern("no@d"));
}
#[test]
fn test_route_query_temporal() {
assert_eq!(route_query("what happened yesterday"), "Temporal");
assert_eq!(route_query("show me events from last week"), "Temporal");
}
#[test]
fn test_route_query_graph() {
assert_eq!(route_query("documents related to authentication"), "Graph");
assert_eq!(route_query("things connected to the API module"), "Graph");
}
#[test]
fn test_route_query_keyword_quoted() {
assert_eq!(route_query("\"exact phrase search\""), "Keyword");
}
#[test]
fn test_route_query_keyword_short() {
assert_eq!(route_query("rust programming"), "Keyword");
assert_eq!(route_query("hello"), "Keyword");
}
#[test]
fn test_route_query_hybrid() {
assert_eq!(route_query("something about machine learning"), "Hybrid");
assert_eq!(route_query("explain how embeddings work"), "Hybrid");
}
}

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//! WASM bindings for OSpipe.
//!
//! Provides browser-based personal AI memory search using vector embeddings.
//!
//! - [`helpers`] - Pure helper functions (cosine similarity, hashing, safety
//! checks, query routing) that are available on all targets for testing.
//! - `bindings` - wasm-bindgen exports, gated behind `target_arch = "wasm32"`.
/// Pure helper functions with no WASM dependencies.
/// Always compiled so that unit tests can run on the host target.
pub mod helpers;
/// wasm-bindgen exports. Only compiled for the `wasm32` target.
#[cfg(target_arch = "wasm32")]
pub mod bindings;

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//! WASM integration tests for OSpipe.
//!
//! These tests run in a browser-like environment using `wasm-bindgen-test`.
//! Execute with:
//!
//! ```bash
//! wasm-pack test --headless --chrome -- --test wasm
//! ```
#![cfg(target_arch = "wasm32")]
use wasm_bindgen::JsValue;
use wasm_bindgen_test::*;
wasm_bindgen_test_configure!(run_in_browser);
use ospipe::wasm::bindings::OsPipeWasm;
// ---------------------------------------------------------------------------
// Construction
// ---------------------------------------------------------------------------
#[wasm_bindgen_test]
fn test_create_instance() {
let instance = OsPipeWasm::new(384);
assert_eq!(instance.len(), 0);
assert!(instance.is_empty());
}
#[wasm_bindgen_test]
fn test_create_with_custom_dimension() {
let instance = OsPipeWasm::new(128);
assert_eq!(instance.len(), 0);
let stats_json = instance.stats();
assert!(
stats_json.contains("\"dimension\":128"),
"Stats should report dimension 128, got: {}",
stats_json
);
}
// ---------------------------------------------------------------------------
// Insert + Search roundtrip
// ---------------------------------------------------------------------------
#[wasm_bindgen_test]
fn test_insert_and_search_roundtrip() {
let mut instance = OsPipeWasm::new(4);
// Insert two vectors.
let emb_a: Vec<f32> = vec![1.0, 0.0, 0.0, 0.0];
let emb_b: Vec<f32> = vec![0.0, 1.0, 0.0, 0.0];
instance
.insert("a", &emb_a, r#"{"label":"a"}"#, 1000.0)
.expect("insert a");
instance
.insert("b", &emb_b, r#"{"label":"b"}"#, 2000.0)
.expect("insert b");
assert_eq!(instance.len(), 2);
assert!(!instance.is_empty());
// Searching with emb_a should return "a" as the top hit.
let results: JsValue = instance.search(&emb_a, 2).expect("search");
let results_str = js_sys::JSON::stringify(&results)
.expect("stringify")
.as_string()
.expect("as_string");
assert!(
results_str.contains("\"id\":\"a\""),
"Top result should be 'a', got: {}",
results_str
);
}
#[wasm_bindgen_test]
fn test_insert_dimension_mismatch() {
let mut instance = OsPipeWasm::new(4);
let wrong_dim: Vec<f32> = vec![1.0, 2.0]; // dimension 2, expects 4
let result = instance.insert("bad", &wrong_dim, "{}", 0.0);
assert!(result.is_err(), "Should reject mismatched dimension");
}
// ---------------------------------------------------------------------------
// Filtered search
// ---------------------------------------------------------------------------
#[wasm_bindgen_test]
fn test_search_filtered_by_time() {
let mut instance = OsPipeWasm::new(4);
let emb: Vec<f32> = vec![1.0, 0.0, 0.0, 0.0];
instance
.insert("early", &emb, "{}", 1000.0)
.expect("insert early");
instance
.insert("late", &emb, "{}", 5000.0)
.expect("insert late");
// Filter to only the early entry (timestamp range [0, 2000]).
let results: JsValue = instance
.search_filtered(&emb, 10, 0.0, 2000.0)
.expect("search_filtered");
let results_str = js_sys::JSON::stringify(&results)
.expect("stringify")
.as_string()
.expect("as_string");
assert!(
results_str.contains("\"id\":\"early\""),
"Filtered results should include 'early', got: {}",
results_str
);
assert!(
!results_str.contains("\"id\":\"late\""),
"Filtered results should exclude 'late', got: {}",
results_str
);
}
// ---------------------------------------------------------------------------
// embed_text
// ---------------------------------------------------------------------------
#[wasm_bindgen_test]
fn test_embed_text_returns_correct_dimension() {
let instance = OsPipeWasm::new(384);
let embedding = instance.embed_text("hello world");
assert_eq!(
embedding.len(),
384,
"embed_text should return a vector of the configured dimension"
);
}
#[wasm_bindgen_test]
fn test_embed_text_is_deterministic() {
let instance = OsPipeWasm::new(64);
let a = instance.embed_text("test input");
let b = instance.embed_text("test input");
assert_eq!(a, b, "Same input text should produce identical embeddings");
}
#[wasm_bindgen_test]
fn test_embed_text_different_inputs_differ() {
let instance = OsPipeWasm::new(64);
let a = instance.embed_text("alpha");
let b = instance.embed_text("beta");
assert_ne!(a, b, "Different inputs should produce different embeddings");
}
// ---------------------------------------------------------------------------
// safety_check
// ---------------------------------------------------------------------------
#[wasm_bindgen_test]
fn test_safety_check_allow() {
let instance = OsPipeWasm::new(4);
let decision = instance.safety_check("the weather is nice today");
assert_eq!(decision, "allow");
}
#[wasm_bindgen_test]
fn test_safety_check_deny_credit_card() {
let instance = OsPipeWasm::new(4);
let decision = instance.safety_check("card number 4111-1111-1111-1111");
assert_eq!(decision, "deny");
}
#[wasm_bindgen_test]
fn test_safety_check_deny_ssn() {
let instance = OsPipeWasm::new(4);
let decision = instance.safety_check("my ssn is 123-45-6789");
assert_eq!(decision, "deny");
}
#[wasm_bindgen_test]
fn test_safety_check_redact_password() {
let instance = OsPipeWasm::new(4);
let decision = instance.safety_check("my password is hunter2");
assert_eq!(decision, "redact");
}
// ---------------------------------------------------------------------------
// route_query
// ---------------------------------------------------------------------------
#[wasm_bindgen_test]
fn test_route_query_temporal() {
let instance = OsPipeWasm::new(4);
let route = instance.route_query("what happened yesterday");
assert_eq!(route, "Temporal");
}
#[wasm_bindgen_test]
fn test_route_query_keyword_short() {
let instance = OsPipeWasm::new(4);
let route = instance.route_query("rust");
assert_eq!(route, "Keyword");
}
#[wasm_bindgen_test]
fn test_route_query_keyword_quoted() {
let instance = OsPipeWasm::new(4);
let route = instance.route_query("\"exact phrase\"");
assert_eq!(route, "Keyword");
}
#[wasm_bindgen_test]
fn test_route_query_graph() {
let instance = OsPipeWasm::new(4);
let route = instance.route_query("things related to authentication module");
assert_eq!(route, "Graph");
}
#[wasm_bindgen_test]
fn test_route_query_hybrid_default() {
let instance = OsPipeWasm::new(4);
let route = instance.route_query("explain how neural networks learn patterns");
assert_eq!(route, "Hybrid");
}
// ---------------------------------------------------------------------------
// Deduplication
// ---------------------------------------------------------------------------
#[wasm_bindgen_test]
fn test_is_duplicate_identical() {
let mut instance = OsPipeWasm::new(4);
let emb: Vec<f32> = vec![1.0, 0.0, 0.0, 0.0];
instance
.insert("original", &emb, "{}", 0.0)
.expect("insert");
assert!(
instance.is_duplicate(&emb, 0.99),
"Identical embedding should be detected as duplicate"
);
}
#[wasm_bindgen_test]
fn test_is_not_duplicate_orthogonal() {
let mut instance = OsPipeWasm::new(4);
let emb_a: Vec<f32> = vec![1.0, 0.0, 0.0, 0.0];
let emb_b: Vec<f32> = vec![0.0, 1.0, 0.0, 0.0];
instance.insert("a", &emb_a, "{}", 0.0).expect("insert");
assert!(
!instance.is_duplicate(&emb_b, 0.5),
"Orthogonal embedding should not be a duplicate at threshold 0.5"
);
}
// ---------------------------------------------------------------------------
// Stats
// ---------------------------------------------------------------------------
#[wasm_bindgen_test]
fn test_stats_json() {
let mut instance = OsPipeWasm::new(16);
let emb: Vec<f32> = vec![0.0; 16];
instance.insert("x", &emb, "{}", 0.0).expect("insert");
let stats = instance.stats();
assert!(stats.contains("\"dimension\":16"), "Stats: {}", stats);
assert!(stats.contains("\"total_embeddings\":1"), "Stats: {}", stats);
assert!(
stats.contains("\"memory_estimate_bytes\""),
"Stats: {}",
stats
);
}