33 lines
935 B
TypeScript
33 lines
935 B
TypeScript
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import pino from 'pino'
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import { resolve } from 'path'
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import { mkdirSync, statSync, truncateSync, openSync, readSync, closeSync, writeFileSync } from 'fs'
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import { homedir } from 'os'
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const MAX_LOG_SIZE = 3 * 1024 * 1024 // 3MB
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const logDir = resolve(homedir(), '.hermes-web-ui', 'logs')
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mkdirSync(logDir, { recursive: true })
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const logFile = resolve(logDir, 'server.log')
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// Rotate log if it exceeds MAX_LOG_SIZE — truncate to keep the last half
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try {
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const stat = statSync(logFile)
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if (stat.size > MAX_LOG_SIZE) {
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const keepSize = Math.floor(MAX_LOG_SIZE / 2)
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const fd = openSync(logFile, 'r')
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const buf = Buffer.alloc(keepSize)
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readSync(fd, buf, 0, keepSize, stat.size - keepSize)
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closeSync(fd)
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truncateSync(logFile, 0)
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writeFileSync(logFile, buf)
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}
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} catch {}
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export const logger = pino({
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level: process.env.LOG_LEVEL || 'info',
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}, pino.destination({
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dest: logFile,
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sync: false,
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}))
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