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657 lines
19 KiB
657 lines
19 KiB
/**
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* ITURHFProp Service
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*
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* REST API wrapper for the ITURHFProp HF propagation prediction engine
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* Implements ITU-R P.533-14 "Method for the prediction of the performance of HF circuits"
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*
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* Endpoints:
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* GET /api/predict - Single point prediction
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* GET /api/predict/hourly - 24-hour prediction
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* GET /api/health - Health check
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*/
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const express = require('express');
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const cors = require('cors');
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const { execSync, exec } = require('child_process');
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const fs = require('fs');
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const path = require('path');
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const crypto = require('crypto');
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const app = express();
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const PORT = process.env.PORT || 3000;
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// Paths to ITURHFProp - DATA points to root which contains Data/ and IonMap/ subdirs
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const ITURHFPROP_PATH = process.env.ITURHFPROP_PATH || '/opt/iturhfprop/ITURHFProp';
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const ITURHFPROP_DATA = process.env.ITURHFPROP_DATA || '/opt/iturhfprop';
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// Temp directory for input/output files
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const TEMP_DIR = '/tmp/iturhfprop';
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// Middleware
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app.use(cors());
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app.use(express.json());
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// Ensure temp directory exists
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if (!fs.existsSync(TEMP_DIR)) {
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fs.mkdirSync(TEMP_DIR, { recursive: true });
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}
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// HF band frequencies (MHz) - P.533 valid range is 2-30 MHz
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const HF_BANDS = {
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'160m': 2.0, // Adjusted from 1.9 to meet P.533 minimum of 2 MHz
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'80m': 3.5,
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'60m': 5.3,
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'40m': 7.1,
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'30m': 10.1,
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'20m': 14.1,
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'17m': 18.1,
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'15m': 21.1,
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'12m': 24.9,
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'10m': 28.1
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// Note: 6m (50 MHz) excluded - outside P.533 HF range (2-30 MHz)
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};
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/**
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* Generate ITURHFProp input file
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*/
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function generateInputFile(params) {
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const {
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txLat, txLon, rxLat, rxLon,
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year, month, hour,
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ssn = 100,
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txPower = 100, // Watts
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txGain = 0, // dBi
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rxGain = 0, // dBi
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frequencies = Object.values(HF_BANDS),
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manMadeNoise = 'RESIDENTIAL', // CITY, RESIDENTIAL, RURAL, QUIET
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requiredReliability = 90,
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requiredSNR = 15 // dB for SSB
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} = params;
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// Convert coordinates to ITURHFProp format (decimal degrees)
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const txLatStr = txLat >= 0 ? `${txLat.toFixed(2)} N` : `${Math.abs(txLat).toFixed(2)} S`;
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const txLonStr = txLon >= 0 ? `${txLon.toFixed(2)} E` : `${Math.abs(txLon).toFixed(2)} W`;
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const rxLatStr = rxLat >= 0 ? `${rxLat.toFixed(2)} N` : `${Math.abs(rxLat).toFixed(2)} S`;
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const rxLonStr = rxLon >= 0 ? `${rxLon.toFixed(2)} E` : `${Math.abs(rxLon).toFixed(2)} W`;
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// Format frequencies - comma-separated per ITURHFProp docs
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const freqList = frequencies.map(f => f.toFixed(3)).join(', ');
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// ITURHFProp input file format - complete version with all required fields
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const input = `PathName "OpenHamClock"
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PathTXName "TX"
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Path.L_tx.lat ${txLat.toFixed(4)}
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Path.L_tx.lng ${txLon.toFixed(4)}
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TXAntFilePath "ISOTROPIC"
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TXGOS 0.0
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PathRXName "RX"
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Path.L_rx.lat ${rxLat.toFixed(4)}
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Path.L_rx.lng ${rxLon.toFixed(4)}
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RXAntFilePath "ISOTROPIC"
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RXGOS 0.0
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AntennaOrientation "TX2RX"
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Path.year ${year}
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Path.month ${month}
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Path.hour ${isNaN(hour) ? 12 : (hour === 0 ? 24 : hour)}
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Path.SSN ${ssn}
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Path.frequency ${freqList}
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Path.txpower ${(10 * Math.log10(txPower / 1000)).toFixed(1)}
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Path.BW 3000
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Path.SNRr ${requiredSNR}
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Path.SNRXXp ${requiredReliability}
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Path.ManMadeNoise "${manMadeNoise}"
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Path.Modulation ANALOG
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Path.SorL SHORTPATH
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LL.lat ${rxLat.toFixed(4)}
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LL.lng ${rxLon.toFixed(4)}
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LR.lat ${rxLat.toFixed(4)}
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LR.lng ${rxLon.toFixed(4)}
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UL.lat ${rxLat.toFixed(4)}
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UL.lng ${rxLon.toFixed(4)}
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UR.lat ${rxLat.toFixed(4)}
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UR.lng ${rxLon.toFixed(4)}
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DataFilePath "${ITURHFPROP_DATA}/Data/"
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RptFilePath "/tmp/"
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RptFileFormat "RPT_PR | RPT_SNR | RPT_BCR"
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`;
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return input;
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}
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/**
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* Parse ITURHFProp output file
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*/
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function parseOutputFile(outputPath) {
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try {
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const output = fs.readFileSync(outputPath, 'utf8');
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const lines = output.split('\n');
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const results = {
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frequencies: [],
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raw: output.substring(0, 3000) // Include raw for debugging
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};
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let inDataSection = false;
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for (const line of lines) {
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const trimmed = line.trim();
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// Look for "Calculated Parameters" section
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if (trimmed.includes('Calculated Parameters') && !trimmed.includes('End')) {
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inDataSection = true;
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continue;
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}
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// Stop at end of data
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if (trimmed.includes('End Calculated') || trimmed.includes('*****')) {
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if (inDataSection && results.frequencies.length > 0) {
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break;
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}
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}
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// Parse data lines: "02, 05, 2.000,-120.29, -16.04, 0.00"
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// Format: Month, Hour, Freq, Pr, SNR, BCR
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if (inDataSection && trimmed && !trimmed.startsWith('*') && !trimmed.startsWith('-')) {
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const parts = trimmed.split(',').map(p => p.trim());
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if (parts.length >= 6) {
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const freq = parseFloat(parts[2]);
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const pr = parseFloat(parts[3]);
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const snr = parseFloat(parts[4]);
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const bcr = parseFloat(parts[5]);
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if (!isNaN(freq) && freq > 0) {
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results.frequencies.push({
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freq: freq,
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sdbw: pr,
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snr: snr,
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reliability: bcr
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});
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console.log(`[Parse] Freq ${freq} MHz: SNR=${snr} dB, BCR=${bcr}%`);
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}
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}
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}
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}
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// Extract MUF from header section
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const mufMatch = output.match(/(?:BMUF|MUF|Operational MUF)\s*[:=]?\s*([\d.]+)/i);
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if (mufMatch) {
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results.muf = parseFloat(mufMatch[1]);
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}
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console.log(`[Parse] Found ${results.frequencies.length} frequency results`);
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return results;
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} catch (err) {
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console.error('[Parse Error]', err.message);
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return { error: err.message, frequencies: [] };
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}
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}
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/**
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* Run ITURHFProp prediction
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*/
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async function runPrediction(params) {
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const id = crypto.randomBytes(8).toString('hex');
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const inputPath = path.join(TEMP_DIR, `input_${id}.txt`);
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const outputPath = path.join(TEMP_DIR, `output_${id}.txt`);
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// Ensure temp dir exists
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if (!fs.existsSync(TEMP_DIR)) {
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fs.mkdirSync(TEMP_DIR, { recursive: true });
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}
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let execStdout = '';
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let execStderr = '';
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try {
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// Generate input file
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const inputContent = generateInputFile(params);
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fs.writeFileSync(inputPath, inputContent);
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console.log(`[ITURHFProp] Running prediction ${id}`);
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console.log(`[ITURHFProp] TX: ${params.txLat}, ${params.txLon} -> RX: ${params.rxLat}, ${params.rxLon}`);
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console.log(`[ITURHFProp] Input file:\n${inputContent}`);
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// Run ITURHFProp
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const startTime = Date.now();
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const cmd = `${ITURHFPROP_PATH} ${inputPath} ${outputPath}`;
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console.log(`[ITURHFProp] Command: ${cmd}`);
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try {
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execStdout = execSync(cmd, {
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timeout: 30000, // 30 second timeout
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encoding: 'utf8',
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env: { ...process.env, LD_LIBRARY_PATH: '/opt/iturhfprop:' + (process.env.LD_LIBRARY_PATH || '') }
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});
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console.log(`[ITURHFProp] stdout: ${execStdout}`);
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} catch (execError) {
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execStderr = execError.stderr?.toString() || '';
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execStdout = execError.stdout?.toString() || '';
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console.error('[ITURHFProp] Execution error!');
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console.error('[ITURHFProp] Exit code:', execError.status);
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console.error('[ITURHFProp] stderr:', execStderr);
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console.error('[ITURHFProp] stdout:', execStdout);
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// Don't throw - try to read output anyway
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}
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const elapsed = Date.now() - startTime;
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console.log(`[ITURHFProp] Completed in ${elapsed}ms`);
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// Check output file
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if (fs.existsSync(outputPath)) {
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const rawOutput = fs.readFileSync(outputPath, 'utf8');
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const stats = fs.statSync(outputPath);
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console.log(`[ITURHFProp] Output file exists, size: ${stats.size} bytes`);
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console.log(`[ITURHFProp] Raw output (first 2000 chars):\n${rawOutput.substring(0, 2000)}`);
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} else {
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console.log(`[ITURHFProp] Output file NOT FOUND at ${outputPath}`);
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// Check if there's a report file in /tmp
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const tmpFiles = fs.readdirSync('/tmp').filter(f => f.startsWith('RPT') || f.startsWith('PDD'));
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console.log(`[ITURHFProp] Report files in /tmp: ${tmpFiles.join(', ') || 'none'}`);
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}
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// Parse output
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const results = parseOutputFile(outputPath);
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results.elapsed = elapsed;
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results.execStdout = execStdout;
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results.execStderr = execStderr;
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results.inputContent = inputContent;
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results.params = {
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txLat: params.txLat,
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txLon: params.txLon,
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rxLat: params.rxLat,
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rxLon: params.rxLon,
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hour: params.hour,
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month: params.month,
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ssn: params.ssn
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};
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return results;
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} finally {
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// Cleanup temp files
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try {
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if (fs.existsSync(inputPath)) fs.unlinkSync(inputPath);
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if (fs.existsSync(outputPath)) fs.unlinkSync(outputPath);
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} catch (e) {
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// Ignore cleanup errors
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}
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}
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}
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// ============================================
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// API ENDPOINTS
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// ============================================
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/**
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* Health check
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*/
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app.get('/api/health', (req, res) => {
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const binaryExists = fs.existsSync(ITURHFPROP_PATH);
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const dataExists = fs.existsSync(ITURHFPROP_DATA);
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const dataSubExists = fs.existsSync(ITURHFPROP_DATA + '/Data');
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// Check for shared libraries
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const libp533Exists = fs.existsSync('/opt/iturhfprop/libp533.so');
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const libp372Exists = fs.existsSync('/opt/iturhfprop/libp372.so');
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// Check for ionospheric data (ionos12.bin in Data folder)
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const ionosDataExists = fs.existsSync(ITURHFPROP_DATA + '/Data/ionos12.bin');
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res.json({
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status: binaryExists && dataSubExists && libp533Exists && ionosDataExists ? 'healthy' : 'degraded',
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service: 'iturhfprop',
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version: '1.0.0',
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engine: 'ITURHFProp (ITU-R P.533-14)',
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binary: binaryExists ? 'found' : 'missing',
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libp533: libp533Exists ? 'found' : 'missing',
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libp372: libp372Exists ? 'found' : 'missing',
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dataDir: dataSubExists ? 'found' : 'missing',
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ionosData: ionosDataExists ? 'found' : 'missing',
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paths: {
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binary: ITURHFPROP_PATH,
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data: ITURHFPROP_DATA
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},
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timestamp: new Date().toISOString()
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});
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});
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/**
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* Diagnostic endpoint - test binary execution
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*/
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app.get('/api/diag', async (req, res) => {
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const results = {
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binary: {},
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libraries: {},
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data: {},
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testRun: {}
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};
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// Check binary
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try {
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const stats = fs.statSync(ITURHFPROP_PATH);
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results.binary = {
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exists: true,
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size: stats.size,
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mode: stats.mode.toString(8),
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path: ITURHFPROP_PATH
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};
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} catch (e) {
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results.binary = { exists: false, error: e.message };
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}
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// Check libraries
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try {
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const libs = fs.readdirSync('/opt/iturhfprop').filter(f => f.endsWith('.so'));
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results.libraries = { found: libs };
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} catch (e) {
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results.libraries = { error: e.message };
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}
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// Check data files
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try {
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const dataFiles = fs.readdirSync(ITURHFPROP_DATA + '/Data').slice(0, 15);
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results.data.dataDir = dataFiles;
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} catch (e) {
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results.data.dataDir = { error: e.message };
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}
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// Check for ionospheric data
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try {
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const ionosExists = fs.existsSync(ITURHFPROP_DATA + '/Data/ionos12.bin');
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results.data.ionosData = ionosExists ? 'found' : 'missing';
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} catch (e) {
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results.data.ionosData = { error: e.message };
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}
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// Try running ldd on the binary
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try {
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const { execSync } = require('child_process');
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const lddOutput = execSync(`ldd ${ITURHFPROP_PATH} 2>&1`, { encoding: 'utf8' });
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results.testRun.ldd = lddOutput.split('\n').slice(0, 10);
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} catch (e) {
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results.testRun.ldd = { error: e.message };
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}
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// Try running the binary with no args to see usage
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try {
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const { execSync } = require('child_process');
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const output = execSync(`${ITURHFPROP_PATH} 2>&1 || true`, {
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encoding: 'utf8',
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env: { ...process.env, LD_LIBRARY_PATH: '/opt/iturhfprop' }
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});
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results.testRun.usage = output.split('\n').slice(0, 10);
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} catch (e) {
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results.testRun.usage = { error: e.message, stderr: e.stderr?.toString(), stdout: e.stdout?.toString() };
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}
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// List ALL files in Data directory
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try {
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const allDataFiles = fs.readdirSync(ITURHFPROP_DATA + '/Data');
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results.data.allFiles = allDataFiles;
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results.data.hasIonos = allDataFiles.some(f => f.includes('ionos'));
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results.data.hasAnt = allDataFiles.some(f => f.endsWith('.ant'));
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results.data.fileCount = allDataFiles.length;
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} catch (e) {
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results.data.allFiles = { error: e.message };
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}
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// Create a minimal test input file and try to run
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try {
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const { execSync } = require('child_process');
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const testInput = `PathName "Test"
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PathTXName "TX"
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Path.L_tx.lat 40.0
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Path.L_tx.lng -75.0
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TXAntFilePath "ISOTROPIC"
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TXGOS 0.0
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PathRXName "RX"
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Path.L_rx.lat 51.0
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Path.L_rx.lng 0.0
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RXAntFilePath "ISOTROPIC"
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RXGOS 0.0
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AntennaOrientation "TX2RX"
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Path.year 2025
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Path.month 6
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Path.hour 12
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Path.SSN 100
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Path.frequency 14.0
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Path.txpower -10.0
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Path.BW 3000
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Path.SNRr 15
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Path.SNRXXp 90
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Path.ManMadeNoise "RESIDENTIAL"
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Path.Modulation ANALOG
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Path.SorL SHORTPATH
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LL.lat 51.0
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LL.lng 0.0
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LR.lat 51.0
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LR.lng 0.0
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UL.lat 51.0
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UL.lng 0.0
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UR.lat 51.0
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UR.lng 0.0
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DataFilePath "${ITURHFPROP_DATA}/Data/"
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RptFilePath "/tmp/"
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RptFileFormat "RPT_PR | RPT_SNR | RPT_BCR"
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`;
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fs.writeFileSync('/tmp/test_input.txt', testInput);
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results.testRun.inputFile = testInput.split('\n');
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const testOutput = execSync(`${ITURHFPROP_PATH} /tmp/test_input.txt /tmp/test_output.txt 2>&1 || echo "Exit code: $?"`, {
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encoding: 'utf8',
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env: { ...process.env, LD_LIBRARY_PATH: '/opt/iturhfprop' }
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});
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results.testRun.testExec = testOutput.split('\n').slice(0, 20);
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// Check if output was created
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if (fs.existsSync('/tmp/test_output.txt')) {
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const output = fs.readFileSync('/tmp/test_output.txt', 'utf8');
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results.testRun.testOutput = output.split('\n').slice(0, 20);
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} else {
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results.testRun.testOutput = 'No output file created';
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}
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} catch (e) {
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results.testRun.testExec = { error: e.message, stderr: e.stderr?.toString(), stdout: e.stdout?.toString() };
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}
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res.json(results);
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});
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/**
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* Single point prediction
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*
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* GET /api/predict?txLat=40&txLon=-74&rxLat=51&rxLon=0&month=1&hour=12&ssn=100
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*/
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app.get('/api/predict', async (req, res) => {
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try {
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const {
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txLat, txLon, rxLat, rxLon,
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month, hour, ssn,
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year = new Date().getFullYear(),
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txPower, frequencies
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} = req.query;
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// Validate required params
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if (!txLat || !txLon || !rxLat || !rxLon) {
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return res.status(400).json({ error: 'Missing required coordinates (txLat, txLon, rxLat, rxLon)' });
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}
|
|
|
|
const params = {
|
|
txLat: parseFloat(txLat),
|
|
txLon: parseFloat(txLon),
|
|
rxLat: parseFloat(rxLat),
|
|
rxLon: parseFloat(rxLon),
|
|
year: parseInt(year),
|
|
month: parseInt(month) || new Date().getMonth() + 1,
|
|
hour: parseInt(hour) || new Date().getUTCHours() || 12,
|
|
ssn: parseInt(ssn) || 100,
|
|
txPower: parseInt(txPower) || 100
|
|
};
|
|
|
|
if (frequencies) {
|
|
params.frequencies = frequencies.split(',').map(f => parseFloat(f));
|
|
}
|
|
|
|
const results = await runPrediction(params);
|
|
|
|
res.json({
|
|
model: 'ITU-R P.533-14',
|
|
engine: 'ITURHFProp',
|
|
...results
|
|
});
|
|
|
|
} catch (err) {
|
|
console.error('[API Error]', err);
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
/**
|
|
* 24-hour prediction
|
|
*
|
|
* GET /api/predict/hourly?txLat=40&txLon=-74&rxLat=51&rxLon=0&month=1&ssn=100
|
|
*/
|
|
app.get('/api/predict/hourly', async (req, res) => {
|
|
try {
|
|
const {
|
|
txLat, txLon, rxLat, rxLon,
|
|
month, ssn,
|
|
year = new Date().getFullYear()
|
|
} = req.query;
|
|
|
|
// Validate required params
|
|
if (!txLat || !txLon || !rxLat || !rxLon) {
|
|
return res.status(400).json({ error: 'Missing required coordinates (txLat, txLon, rxLat, rxLon)' });
|
|
}
|
|
|
|
const baseParams = {
|
|
txLat: parseFloat(txLat),
|
|
txLon: parseFloat(txLon),
|
|
rxLat: parseFloat(rxLat),
|
|
rxLon: parseFloat(rxLon),
|
|
year: parseInt(year),
|
|
month: parseInt(month) || new Date().getMonth() + 1,
|
|
ssn: parseInt(ssn) || 100
|
|
};
|
|
|
|
// Run predictions for each hour (0-23 UTC)
|
|
const hourlyResults = [];
|
|
|
|
for (let hour = 0; hour < 24; hour++) {
|
|
const params = { ...baseParams, hour };
|
|
try {
|
|
const result = await runPrediction(params);
|
|
hourlyResults.push({
|
|
hour,
|
|
muf: result.muf,
|
|
frequencies: result.frequencies
|
|
});
|
|
} catch (err) {
|
|
hourlyResults.push({
|
|
hour,
|
|
error: err.message
|
|
});
|
|
}
|
|
}
|
|
|
|
res.json({
|
|
model: 'ITU-R P.533-14',
|
|
engine: 'ITURHFProp',
|
|
path: {
|
|
tx: { lat: baseParams.txLat, lon: baseParams.txLon },
|
|
rx: { lat: baseParams.rxLat, lon: baseParams.rxLon }
|
|
},
|
|
month: baseParams.month,
|
|
year: baseParams.year,
|
|
ssn: baseParams.ssn,
|
|
hourly: hourlyResults
|
|
});
|
|
|
|
} catch (err) {
|
|
console.error('[API Error]', err);
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Band conditions (simplified format for OpenHamClock)
|
|
*
|
|
* GET /api/bands?txLat=40&txLon=-74&rxLat=51&rxLon=0
|
|
*/
|
|
app.get('/api/bands', async (req, res) => {
|
|
try {
|
|
const {
|
|
txLat, txLon, rxLat, rxLon,
|
|
month, hour, ssn
|
|
} = req.query;
|
|
|
|
if (!txLat || !txLon || !rxLat || !rxLon) {
|
|
return res.status(400).json({ error: 'Missing required coordinates' });
|
|
}
|
|
|
|
const params = {
|
|
txLat: parseFloat(txLat),
|
|
txLon: parseFloat(txLon),
|
|
rxLat: parseFloat(rxLat),
|
|
rxLon: parseFloat(rxLon),
|
|
year: new Date().getFullYear(),
|
|
month: parseInt(month) || new Date().getMonth() + 1,
|
|
hour: parseInt(hour) || new Date().getUTCHours() || 12,
|
|
ssn: parseInt(ssn) || 100,
|
|
frequencies: Object.values(HF_BANDS)
|
|
};
|
|
|
|
const results = await runPrediction(params);
|
|
|
|
// Map to band names
|
|
const bands = {};
|
|
const bandFreqs = Object.entries(HF_BANDS);
|
|
|
|
for (const freqResult of results.frequencies) {
|
|
const bandEntry = bandFreqs.find(([name, freq]) =>
|
|
Math.abs(freq - freqResult.freq) < 1
|
|
);
|
|
|
|
if (bandEntry) {
|
|
const [bandName] = bandEntry;
|
|
bands[bandName] = {
|
|
freq: freqResult.freq,
|
|
reliability: freqResult.reliability,
|
|
snr: freqResult.snr,
|
|
sdbw: freqResult.sdbw,
|
|
status: freqResult.reliability >= 70 ? 'GOOD' :
|
|
freqResult.reliability >= 40 ? 'FAIR' : 'POOR'
|
|
};
|
|
}
|
|
}
|
|
|
|
res.json({
|
|
model: 'ITU-R P.533-14',
|
|
muf: results.muf,
|
|
bands,
|
|
debug: {
|
|
rawOutput: results.raw,
|
|
freqCount: results.frequencies.length,
|
|
parsedFreqs: results.frequencies,
|
|
execStdout: results.execStdout,
|
|
execStderr: results.execStderr,
|
|
inputContent: results.inputContent?.substring(0, 1000)
|
|
},
|
|
timestamp: new Date().toISOString()
|
|
});
|
|
|
|
} catch (err) {
|
|
console.error('[API Error]', err);
|
|
res.status(500).json({ error: err.message });
|
|
}
|
|
});
|
|
|
|
// Start server
|
|
app.listen(PORT, () => {
|
|
console.log(`ITURHFProp Service running on port ${PORT}`);
|
|
console.log(`Binary: ${ITURHFPROP_PATH}`);
|
|
console.log(`Data: ${ITURHFPROP_DATA}`);
|
|
});
|