6ed69a3d48
Major changes: - Organized Python v1 implementation into v1/ subdirectory - Created Rust workspace with 9 modular crates: - wifi-densepose-core: Core types, traits, errors - wifi-densepose-signal: CSI processing, phase sanitization, FFT - wifi-densepose-nn: Neural network inference (ONNX/Candle/tch) - wifi-densepose-api: Axum-based REST/WebSocket API - wifi-densepose-db: SQLx database layer - wifi-densepose-config: Configuration management - wifi-densepose-hardware: Hardware abstraction - wifi-densepose-wasm: WebAssembly bindings - wifi-densepose-cli: Command-line interface Documentation: - ADR-001: Workspace structure - ADR-002: Signal processing library selection - ADR-003: Neural network inference strategy - DDD domain model with bounded contexts Testing: - 69 tests passing across all crates - Signal processing: 45 tests - Neural networks: 21 tests - Core: 3 doc tests Performance targets: - 10x faster CSI processing (~0.5ms vs ~5ms) - 5x lower memory usage (~100MB vs ~500MB) - WASM support for browser deployment
340 lines
12 KiB
Python
340 lines
12 KiB
Python
"""
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Router interface for WiFi CSI data collection
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"""
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import logging
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import asyncio
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import time
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from typing import Dict, List, Optional, Any
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from datetime import datetime
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import numpy as np
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logger = logging.getLogger(__name__)
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class RouterInterface:
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"""Interface for connecting to WiFi routers and collecting CSI data."""
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def __init__(
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self,
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router_id: str,
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host: str,
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port: int = 22,
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username: str = "admin",
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password: str = "",
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interface: str = "wlan0",
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mock_mode: bool = False
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):
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"""Initialize router interface.
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Args:
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router_id: Unique identifier for the router
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host: Router IP address or hostname
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port: SSH port for connection
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username: SSH username
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password: SSH password
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interface: WiFi interface name
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mock_mode: Whether to use mock data instead of real connection
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"""
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self.router_id = router_id
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self.host = host
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self.port = port
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self.username = username
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self.password = password
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self.interface = interface
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self.mock_mode = mock_mode
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self.logger = logging.getLogger(f"{__name__}.{router_id}")
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# Connection state
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self.is_connected = False
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self.connection = None
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self.last_error = None
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# Data collection state
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self.last_data_time = None
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self.error_count = 0
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self.sample_count = 0
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# Mock data generation
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self.mock_data_generator = None
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if mock_mode:
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self._initialize_mock_generator()
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def _initialize_mock_generator(self):
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"""Initialize mock data generator."""
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self.mock_data_generator = {
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'phase': 0,
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'amplitude_base': 1.0,
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'frequency': 0.1,
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'noise_level': 0.1
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}
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async def connect(self):
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"""Connect to the router."""
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if self.mock_mode:
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self.is_connected = True
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self.logger.info(f"Mock connection established to router {self.router_id}")
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return
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try:
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self.logger.info(f"Connecting to router {self.router_id} at {self.host}:{self.port}")
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# In a real implementation, this would establish SSH connection
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# For now, we'll simulate the connection
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await asyncio.sleep(0.1) # Simulate connection delay
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self.is_connected = True
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self.error_count = 0
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self.logger.info(f"Connected to router {self.router_id}")
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except Exception as e:
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self.last_error = str(e)
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self.error_count += 1
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self.logger.error(f"Failed to connect to router {self.router_id}: {e}")
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raise
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async def disconnect(self):
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"""Disconnect from the router."""
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try:
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if self.connection:
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# Close SSH connection
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self.connection = None
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self.is_connected = False
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self.logger.info(f"Disconnected from router {self.router_id}")
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except Exception as e:
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self.logger.error(f"Error disconnecting from router {self.router_id}: {e}")
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async def reconnect(self):
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"""Reconnect to the router."""
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await self.disconnect()
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await asyncio.sleep(1) # Wait before reconnecting
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await self.connect()
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async def get_csi_data(self) -> Optional[np.ndarray]:
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"""Get CSI data from the router.
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Returns:
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CSI data as numpy array, or None if no data available
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"""
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if not self.is_connected:
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raise RuntimeError(f"Router {self.router_id} is not connected")
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try:
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if self.mock_mode:
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csi_data = self._generate_mock_csi_data()
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else:
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csi_data = await self._collect_real_csi_data()
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if csi_data is not None:
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self.last_data_time = datetime.now()
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self.sample_count += 1
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self.error_count = 0
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return csi_data
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except Exception as e:
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self.last_error = str(e)
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self.error_count += 1
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self.logger.error(f"Error getting CSI data from router {self.router_id}: {e}")
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return None
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def _generate_mock_csi_data(self) -> np.ndarray:
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"""Generate mock CSI data for testing."""
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# Simulate CSI data with realistic characteristics
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num_subcarriers = 64
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num_antennas = 4
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num_samples = 100
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# Update mock generator state
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self.mock_data_generator['phase'] += self.mock_data_generator['frequency']
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# Generate amplitude and phase data
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time_axis = np.linspace(0, 1, num_samples)
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# Create realistic CSI patterns
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csi_data = np.zeros((num_antennas, num_subcarriers, num_samples), dtype=complex)
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for antenna in range(num_antennas):
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for subcarrier in range(num_subcarriers):
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# Base signal with some variation per antenna/subcarrier
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amplitude = (
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self.mock_data_generator['amplitude_base'] *
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(1 + 0.2 * np.sin(2 * np.pi * subcarrier / num_subcarriers)) *
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(1 + 0.1 * antenna)
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)
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# Phase with spatial and frequency variation
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phase_offset = (
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self.mock_data_generator['phase'] +
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2 * np.pi * subcarrier / num_subcarriers +
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np.pi * antenna / num_antennas
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)
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# Add some movement simulation
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movement_freq = 0.5 # Hz
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movement_amplitude = 0.3
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movement = movement_amplitude * np.sin(2 * np.pi * movement_freq * time_axis)
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# Generate complex signal
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signal_amplitude = amplitude * (1 + movement)
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signal_phase = phase_offset + movement * 0.5
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# Add noise
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noise_real = np.random.normal(0, self.mock_data_generator['noise_level'], num_samples)
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noise_imag = np.random.normal(0, self.mock_data_generator['noise_level'], num_samples)
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noise = noise_real + 1j * noise_imag
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# Create complex signal
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signal = signal_amplitude * np.exp(1j * signal_phase) + noise
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csi_data[antenna, subcarrier, :] = signal
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return csi_data
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async def _collect_real_csi_data(self) -> Optional[np.ndarray]:
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"""Collect real CSI data from router (placeholder implementation)."""
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# This would implement the actual CSI data collection
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# For now, return None to indicate no real implementation
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self.logger.warning("Real CSI data collection not implemented")
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return None
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async def check_health(self) -> bool:
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"""Check if the router connection is healthy.
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Returns:
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True if healthy, False otherwise
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"""
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if not self.is_connected:
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return False
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try:
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# In mock mode, always healthy
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if self.mock_mode:
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return True
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# For real connections, we could ping the router or check SSH connection
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# For now, consider healthy if error count is low
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return self.error_count < 5
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except Exception as e:
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self.logger.error(f"Error checking health of router {self.router_id}: {e}")
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return False
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async def get_status(self) -> Dict[str, Any]:
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"""Get router status information.
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Returns:
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Dictionary containing router status
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"""
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return {
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"router_id": self.router_id,
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"connected": self.is_connected,
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"mock_mode": self.mock_mode,
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"last_data_time": self.last_data_time.isoformat() if self.last_data_time else None,
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"error_count": self.error_count,
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"sample_count": self.sample_count,
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"last_error": self.last_error,
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"configuration": {
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"host": self.host,
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"port": self.port,
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"username": self.username,
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"interface": self.interface
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}
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}
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async def get_router_info(self) -> Dict[str, Any]:
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"""Get router hardware information.
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Returns:
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Dictionary containing router information
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"""
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if self.mock_mode:
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return {
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"model": "Mock Router",
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"firmware": "1.0.0-mock",
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"wifi_standard": "802.11ac",
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"antennas": 4,
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"supported_bands": ["2.4GHz", "5GHz"],
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"csi_capabilities": {
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"max_subcarriers": 64,
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"max_antennas": 4,
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"sampling_rate": 1000
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}
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}
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# For real routers, this would query the actual hardware
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return {
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"model": "Unknown",
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"firmware": "Unknown",
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"wifi_standard": "Unknown",
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"antennas": 1,
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"supported_bands": ["Unknown"],
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"csi_capabilities": {
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"max_subcarriers": 64,
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"max_antennas": 1,
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"sampling_rate": 100
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}
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}
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async def configure_csi_collection(self, config: Dict[str, Any]) -> bool:
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"""Configure CSI data collection parameters.
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Args:
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config: Configuration dictionary
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Returns:
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True if configuration successful, False otherwise
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"""
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try:
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if self.mock_mode:
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# Update mock generator parameters
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if 'sampling_rate' in config:
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self.mock_data_generator['frequency'] = config['sampling_rate'] / 1000.0
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if 'noise_level' in config:
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self.mock_data_generator['noise_level'] = config['noise_level']
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self.logger.info(f"Mock CSI collection configured for router {self.router_id}")
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return True
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# For real routers, this would send configuration commands
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self.logger.warning("Real CSI configuration not implemented")
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return False
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except Exception as e:
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self.logger.error(f"Error configuring CSI collection for router {self.router_id}: {e}")
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return False
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def get_metrics(self) -> Dict[str, Any]:
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"""Get router interface metrics.
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Returns:
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Dictionary containing metrics
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"""
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uptime = 0
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if self.last_data_time:
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uptime = (datetime.now() - self.last_data_time).total_seconds()
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success_rate = 0
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if self.sample_count > 0:
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success_rate = (self.sample_count - self.error_count) / self.sample_count
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return {
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"router_id": self.router_id,
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"sample_count": self.sample_count,
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"error_count": self.error_count,
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"success_rate": success_rate,
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"uptime_seconds": uptime,
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"is_connected": self.is_connected,
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"mock_mode": self.mock_mode
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}
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def reset_stats(self):
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"""Reset statistics counters."""
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self.error_count = 0
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self.sample_count = 0
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self.last_error = None
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self.logger.info(f"Statistics reset for router {self.router_id}") |