seraph-agent
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An extremely lightweight, SRE autonomous AI agent for seamless integration with common observability tasks.
583 lines (567 loc) • 25.3 kB
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<h1><a href="../index.html">All files</a> / <a href="index.html">src</a> server.ts</h1>
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<span class="strong">82.52% </span>
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<span class="strong">87.87% </span>
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<span class="strong">64.28% </span>
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<span class="strong">83.83% </span>
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<span class='fraction'>83/99</span>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">import * as http from 'http';
import * as net from 'net';
import * as fs from 'fs';
import * as path from 'path';
import { AgentManager } from './agent';
import { SeraphConfig } from './config';
import { register } from './metrics';
import * as chat from './chat';
const requestCounts = new Map<string, number>();
const RATE_LIMIT_WINDOW = 60000; // 1 minute
const RATE_LIMIT_MAX_REQUESTS = 100; // Max requests per window
export function startServer(config: SeraphConfig, agentManager: AgentManager) {
setInterval(() => requestCounts.clear(), RATE_LIMIT_WINDOW);
const server = http.createServer(async (req, res) => {
const clientIp = req.socket.remoteAddress;
if (req.url === '/logs' && req.method === 'POST') {
if (clientIp) {
const requestCount = (requestCounts.get(clientIp) || 0) + 1;
requestCounts.set(clientIp, requestCount);
if (requestCount > RATE_LIMIT_MAX_REQUESTS) {
res.writeHead(429, { 'Content-Type': 'application/json' });
res.end(JSON.stringify({ status: 'error', message: 'Too Many Requests' }));
return;
}
}
const MAX_PAYLOAD_SIZE = 1024 * 1024; // 1MB
let body = '';
req.on('data', chunk => {
<span class="missing-if-branch" title="if path not taken" >I</span>if (res.headersSent) <span class="cstat-no" title="statement not covered" >return;</span>
body += chunk.toString();
if (body.length > MAX_PAYLOAD_SIZE) {
res.writeHead(413, { 'Content-Type': 'application/json' });
res.end(JSON.stringify({ status: 'error', message: 'Payload Too Large' }));
}
});
req.on('end', () => {
if (res.headersSent) return;
if (typeof body !== 'string' || body.trim() === '') {
res.writeHead(400, { 'Content-Type': 'application/json' });
res.end(JSON.stringify({ status: 'error', message: 'Invalid log format. Log must be a non-empty string.' }));
return;
}
try {
agentManager.dispatch(body);
res.writeHead(202, { 'Content-Type': 'application/json' });
res.end(JSON.stringify({ status: 'accepted' }));
} catch (error) {
<span class="cstat-no" title="statement not covered" > res.writeHead(400, { 'Content-Type': 'application/json' });</span>
<span class="cstat-no" title="statement not covered" > res.end(JSON.stringify({ status: 'error', message: 'Invalid log format.' }));</span>
}
});
} else if (req.url === '/status' && req.method === 'GET') {
res.writeHead(200, { 'Content-Type': 'application/json' });
res.end(JSON.stringify({ status: 'ok' }));
} else if (req.url === '/metrics' && req.method === 'GET') {
res.setHeader('Content-Type', register.contentType);
res.end(await register.metrics());
} else if (req.url === '/chat' && req.method === 'POST') {
let body = '';
req.on('data', (chunk) => {
body += chunk.toString();
});
req.on('end', async () => {
try {
if (!body) {
res.writeHead(400, { 'Content-Type': 'application/json' });
res.end(JSON.stringify({ status: 'error', message: 'message is required' }));
return;
}
const { message } = JSON.parse(body);
if (!message) {
res.writeHead(400, { 'Content-Type': 'application/json' });
res.end(JSON.stringify({ status: 'error', message: 'message is required' }));
return;
}
const response = await chat.chat(
message,
config,
[], // No MCP tools available in server mode
agentManager.getRecentLogs(),
);
res.writeHead(200, { 'Content-Type': 'text/plain' });
res.end(response);
} catch (error: any) {
if (error instanceof SyntaxError) {
res.writeHead(400, {
'Content-Type': 'application/json',
});
res.end(
JSON.stringify({
status: 'error',
message: 'Invalid JSON format',
}),
);
return;
}
res.writeHead(500, { 'Content-Type': 'application/json' });
res.end(
JSON.stringify({
status: 'error',
message: 'Internal Server Error',
}),
);
}
});
} else {
res.writeHead(404, { 'Content-Type': 'application/json' });
res.end(JSON.stringify({ status: 'error', message: 'Not Found' }));
}
});
server.listen(config.port, () => {
// The listening message is now in index.ts to avoid duplication
});
// IPC server
const ipcSocketPath = path.join(process.cwd(), '.seraph.sock');
const ipcServer = net.createServer(<span class="fstat-no" title="function not covered" >(s</span>ocket) => {
<span class="cstat-no" title="statement not covered" > socket.on('data', <span class="fstat-no" title="function not covered" >(d</span>ata) => {</span>
const message = <span class="cstat-no" title="statement not covered" >data.toString();</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (message === 'get_logs') {</span>
<span class="cstat-no" title="statement not covered" > socket.write(JSON.stringify(agentManager.getRecentLogs()));</span>
}
});
});
// Clean up old socket file
if (fs.existsSync(ipcSocketPath)) {
fs.unlinkSync(ipcSocketPath);
}
ipcServer.listen(ipcSocketPath, () => {
console.log('IPC server started');
});
// Graceful shutdown
let isShuttingDown = false;
const shutdown = <span class="fstat-no" title="function not covered" >() =</span>> {
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (isShuttingDown) <span class="cstat-no" title="statement not covered" >return;</span></span>
<span class="cstat-no" title="statement not covered" > isShuttingDown = true;</span>
<span class="cstat-no" title="statement not covered" > console.log('Shutting down gracefully...');</span>
<span class="cstat-no" title="statement not covered" > server.close(<span class="fstat-no" title="function not covered" >() =</span>> {</span>
<span class="cstat-no" title="statement not covered" > console.log('HTTP server closed.');</span>
});
<span class="cstat-no" title="statement not covered" > ipcServer.close(<span class="fstat-no" title="function not covered" >() =</span>> {</span>
<span class="cstat-no" title="statement not covered" > console.log('IPC server closed.');</span>
<span class="cstat-no" title="statement not covered" > <span class="missing-if-branch" title="if path not taken" >I</span>if (fs.existsSync(ipcSocketPath)) {</span>
<span class="cstat-no" title="statement not covered" > fs.unlinkSync(ipcSocketPath);</span>
<span class="cstat-no" title="statement not covered" > console.log('IPC socket file removed.');</span>
}
});
};
process.on('SIGTERM', shutdown);
process.on('SIGINT', shutdown); // Also handle Ctrl+C
return server;
}</pre></td></tr></table></pre>
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