File size: 4,884 Bytes
b91e262 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 | import fs from 'fs'
import path from 'path'
export interface LogEntry {
timestamp: string
source: 'Server' | 'Browser'
level: string
message: string
}
// Logging server and browser logs to a file
export class FileLogger {
private logFilePath: string = ''
private isInitialized: boolean = false
private logQueue: string[] = []
private flushTimer: NodeJS.Timeout | null = null
private mcpServerEnabled: boolean = false
public initialize(distDir: string, mcpServerEnabled: boolean): void {
this.logFilePath = path.join(distDir, 'logs', `next-development.log`)
this.mcpServerEnabled = mcpServerEnabled
if (this.isInitialized) {
return
}
// Only initialize if mcpServer is enabled
if (!this.mcpServerEnabled) {
return
}
try {
// Clean up the log file on each initialization
// ensure the directory exists
fs.mkdirSync(path.dirname(this.logFilePath), { recursive: true })
fs.writeFileSync(this.logFilePath, '')
this.isInitialized = true
} catch (error) {
console.error(error)
}
}
private formatTimestamp(): string {
// Use performance.now() instead of Date.now() for avoid sync IO of cache components
const now = performance.now()
const hours = Math.floor(now / 3600000)
.toString()
.padStart(2, '0')
const minutes = Math.floor((now % 3600000) / 60000)
.toString()
.padStart(2, '0')
const seconds = Math.floor((now % 60000) / 1000)
.toString()
.padStart(2, '0')
const milliseconds = Math.floor(now % 1000)
.toString()
.padStart(3, '0')
return `${hours}:${minutes}:${seconds}.${milliseconds}`
}
private formatLogEntry(entry: LogEntry): string {
const { timestamp, source, level, message } = entry
const levelPadded = level.toUpperCase().padEnd(7, ' ') // Pad level to 7 characters for alignment
const sourcePadded = source === 'Browser' ? source : 'Server '
return `[${timestamp}] ${sourcePadded} ${levelPadded} ${message}\n`
}
private scheduleFlush(): void {
// Debounce the flush
if (this.flushTimer) {
clearTimeout(this.flushTimer)
this.flushTimer = null
}
// Delay the log flush to ensure more logs can be batched together asynchronously
this.flushTimer = setTimeout(() => {
this.flush()
}, 100)
}
public getLogQueue(): string[] {
return this.logQueue
}
private flush(): void {
if (this.logQueue.length === 0) {
return
}
// Only flush to disk if mcpServer is enabled
if (!this.mcpServerEnabled) {
this.logQueue = [] // Clear the queue without writing
this.flushTimer = null
return
}
try {
// Ensure the directory exists before writing
const logDir = path.dirname(this.logFilePath)
if (!fs.existsSync(logDir)) {
fs.mkdirSync(logDir, { recursive: true })
}
const logsToWrite = this.logQueue.join('')
// Writing logs to files synchronously to ensure they're written before returning
fs.appendFileSync(this.logFilePath, logsToWrite)
this.logQueue = []
} catch (error) {
console.error('Failed to flush logs to file:', error)
} finally {
this.flushTimer = null
}
}
private enqueueLog(formattedEntry: string): void {
this.logQueue.push(formattedEntry)
// Cancel existing timer and start a new one to ensure all logs are flushed together
if (this.flushTimer) {
clearTimeout(this.flushTimer)
this.flushTimer = null
}
this.scheduleFlush()
}
log(source: 'Server' | 'Browser', level: string, message: string): void {
// Don't log anything if mcpServer is disabled
if (!this.mcpServerEnabled) {
return
}
if (!this.isInitialized) {
return
}
const logEntry: LogEntry = {
timestamp: this.formatTimestamp(),
source,
level,
message,
}
const formattedEntry = this.formatLogEntry(logEntry)
this.enqueueLog(formattedEntry)
}
logServer(level: string, message: string): void {
this.log('Server', level, message)
}
logBrowser(level: string, message: string): void {
this.log('Browser', level, message)
}
// Force flush all queued logs immediately
forceFlush(): void {
if (this.flushTimer) {
clearTimeout(this.flushTimer)
this.flushTimer = null
}
this.flush()
}
// Cleanup method to flush logs on process exit
destroy(): void {
this.forceFlush()
}
}
// Singleton instance
let fileLogger: FileLogger | null = null
export function getFileLogger(): FileLogger {
if (!fileLogger || process.env.NODE_ENV === 'test') {
fileLogger = new FileLogger()
}
return fileLogger
}
// Only used for testing
export function test__resetFileLogger(): void {
if (fileLogger) {
fileLogger.destroy()
}
fileLogger = null
}
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