78 lines
2.0 KiB
TypeScript
78 lines
2.0 KiB
TypeScript
import * as fs from 'fs'
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import * as path from 'path'
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import Logger, { LoggerType } from '#application/logger'
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export class LogReader {
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private logger = Logger.type(LoggerType.CONSOLE)
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private watchers: fs.FSWatcher[] = []
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private readonly logsDirectory: string
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constructor(rootPath: string) {
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this.logsDirectory = path.join(rootPath, 'logs')
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}
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public start(): void {
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this.logger.info('Starting log reader...')
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this.watchLogs()
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}
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public stop(): void {
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this.watchers.forEach((watcher) => watcher.close())
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this.watchers = []
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}
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private watchLogs(): void {
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// Watch directory for new files
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const directoryWatcher = fs.watch(this.logsDirectory, (_, filename) => {
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if (filename?.endsWith('.log')) {
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this.watchLogFile(filename)
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}
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})
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this.watchers.push(directoryWatcher)
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// Watch existing files
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try {
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fs.readdirSync(this.logsDirectory)
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.filter((file) => file.endsWith('.log'))
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.forEach((file) => this.watchLogFile(file))
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} catch (error) {
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this.logger.error(`Error reading logs directory: ${error}`)
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}
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}
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private watchLogFile(filename: string): void {
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const filePath = path.join(this.logsDirectory, filename)
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let currentPosition = fs.existsSync(filePath) ? fs.statSync(filePath).size : 0
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const watcher = fs.watch(filePath, () => {
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try {
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const stat = fs.statSync(filePath)
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const newPosition = stat.size
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if (newPosition < currentPosition) {
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currentPosition = 0
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}
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if (newPosition > currentPosition) {
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const stream = fs.createReadStream(filePath, {
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start: currentPosition,
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end: newPosition
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})
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stream.on('data', (data) => {
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process.stdout.write('\r' + `[${filename}]\n${data}`)
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process.stdout.write('\n> ')
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})
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currentPosition = newPosition
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}
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} catch {
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watcher.close()
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}
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})
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this.watchers.push(watcher)
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}
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}
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