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restserver.js
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restserver.js
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const express = require('express');
const fs = require('fs');
const path = require('path');
const https = require('https');
const http = require('http');
const { format, toZonedTime } = require('date-fns-tz');
const timeZone = process.env.TZ || 'UTC';
const PORT = process.env.PORT || 3300;
const USE_HTTPS = process.env.USE_HTTPS === 'true';
const KEY = process.env.KEY_FILE || 'server.key';
const CRT = process.env.CRT_FILE || 'server.crt';
const sslOptions = USE_HTTPS ? {
key: fs.readFileSync(KEY),
cert: fs.readFileSync(CRT)
} : {};
const INPUT_PIPE_PATH = '/tmp/rscp2p.fifo.data';
const OUTPUT_PIPE_PATH = '/tmp/rscp2p.fifo.cmd';
const app = express();
app.use(express.json());
let dataStore = {};
const readFromPipe = () => {
const pipeStream = fs.createReadStream(INPUT_PIPE_PATH, { encoding: 'utf8' });
pipeStream.on('data', chunk => {
const lines = chunk.trim().split('\n');
lines.forEach(line => {
const [begin, key, value, unit, end] = line.split('=');
if (begin == "$" && key && value && end == "$") {
const currentDate = new Date();
const zonedDate = toZonedTime(currentDate, timeZone);
const rfc3339Timestamp = format(zonedDate, "yyyy-MM-dd'T'HH:mm:ssXXX", { timeZone });
dataStore[key.trim().replaceAll("/","_")] = {
value: value.trim(),
unit: unit.trim().replaceAll("_",""),
timestamp: rfc3339Timestamp
};
} else {
console.error('Invalid input format');
}
});
});
pipeStream.on('end', () => {
console.log('Pipe closed, reopening...');
setTimeout(readFromPipe, 1000);
});
pipeStream.on('error', (err) => {
console.error('Pipe error:', err);
setTimeout(readFromPipe, 1000);
});
};
readFromPipe();
app.get('/data', (req, res) => {
res.json(dataStore);
});
app.get('/data/:key', (req, res) => {
const key = req.params.key;
if (dataStore[key]) {
res.json({ [key]: dataStore[key] });
} else {
res.status(404).json({ error: 'Key not found' });
}
});
app.get('/data/:key/raw', (req, res) => {
const key = req.params.key;
if (dataStore[key]) {
res.send(dataStore[key].value);
} else {
res.status(404).send('Key not found');
}
});
app.post('/data', (req, res) => {
const { key, value } = req.body;
if (!key || !value) {
return res.status(400).json({ error: 'Key and value are required' });
}
const outputStream = fs.createWriteStream(OUTPUT_PIPE_PATH, { flags: 'a' });
outputStream.write(`${key}=${value}`, (err) => {
if (err) {
console.error('Failed to write to pipe:', err);
return res.status(500).json({ error: 'Failed to write to pipe' });
}
res.json({ message: 'Data sent to rscp2p' });
});
outputStream.end();
});
app.delete('/data/:key', (req, res) => {
const key = req.params.key;
if (dataStore[key]) {
delete dataStore[key];
res.json({ message: `Key '${key}' deleted` });
} else {
res.status(404).json({ error: 'Key not found' });
}
});
if (USE_HTTPS) {
https.createServer(sslOptions, app).listen(PORT, () => {
console.log(`HTTPS Server is running on port ${PORT}`);
});
} else {
http.createServer(app).listen(PORT, () => {
console.log(`HTTP Server is running on port ${PORT}`);
});
}