{"version":3,"file":"file-log.mjs","names":[],"sources":["../../../../../../../@warlock.js/logger/src/channels/file-log.ts"],"sourcesContent":["import { ensureDirectoryAsync } from \"@warlock.js/fs\";\r\nimport dayjs from \"dayjs\";\r\nimport fs from \"fs\";\r\nimport { EOL } from \"os\";\r\nimport path from \"path\";\r\nimport { LogChannel } from \"../log-channel\";\r\nimport type {\r\n BasicLogConfigurations,\r\n LogContract,\r\n LoggingData,\r\n LogLevel,\r\n LogMessage,\r\n} from \"../types\";\r\n\r\n// TODO: Add max messages per file before rotation\r\n\r\nexport type FileLogConfig = BasicLogConfigurations & {\r\n storagePath?: string;\r\n /**\r\n * File name, without extension\r\n */\r\n name?: string;\r\n /**\r\n * chunk mode\r\n * If set to `single`, the logs will be created in a single file, unless the rotate is set to true\r\n * If set to `daily`, the logs will be created in a daily file, unless the rotate is set to true\r\n * If set to `hourly`, the logs will be created in an hourly file, unless the rotate is set to true\r\n * @default single\r\n */\r\n chunk?: \"single\" | \"daily\" | \"hourly\";\r\n /**\r\n * Whether to rotate the file\r\n *\r\n * @default true\r\n */\r\n rotate?: boolean;\r\n /**\r\n * File Extension\r\n *\r\n * @default log\r\n */\r\n extension?: string;\r\n /**\r\n * If rotate is set, the rotate name will be added to the file name suffixed with `-`\r\n *\r\n * @default DD-MM-YYYY\r\n */\r\n rotateFileName?: string;\r\n /**\r\n * Max file size before rotating the file\r\n *\r\n * @default 10MB\r\n */\r\n maxFileSize?: number;\r\n /**\r\n * Set the max messages that needs to be added before writing to the file\r\n *\r\n * @default 100\r\n */\r\n maxMessagesToWrite?: number;\r\n /**\r\n * Group logs by\r\n * Please note that the order matters here\r\n * For example, if you set `groupBy: ['level', 'module']`, the logs will be added in level name first, then by module\r\n *\r\n * @default none\r\n */\r\n groupBy?: (\"level\" | \"module\" | \"action\")[];\r\n /**\r\n * Define what levels should be logged\r\n *\r\n * @default all\r\n */\r\n levels?: LogLevel[];\r\n /**\r\n * Date and time format\r\n */\r\n dateFormat?: {\r\n date?: string;\r\n time?: string;\r\n };\r\n};\r\n\r\nexport class FileLog extends LogChannel implements LogContract {\r\n /**\r\n * {@inheritdoc}\r\n */\r\n public name = \"file\";\r\n\r\n /**\r\n * Messages buffer\r\n */\r\n protected messages: LogMessage[] = [];\r\n\r\n /**\r\n * Grouped messages\r\n */\r\n protected groupedMessages: Record = {};\r\n\r\n /**\r\n * Default channel configurations\r\n */\r\n protected defaultConfigurations: FileLogConfig = {\r\n storagePath: process.cwd() + \"/storage/logs\",\r\n rotate: true,\r\n name: \"app\",\r\n extension: \"log\",\r\n chunk: \"single\",\r\n maxMessagesToWrite: 100,\r\n filter: () => true,\r\n maxFileSize: 10 * 1024 * 1024, // 10MB\r\n get rotateFileName() {\r\n return dayjs().format(\"DD-MM-YYYY\");\r\n },\r\n dateFormat: {\r\n date: \"DD-MM-YYYY\",\r\n time: \"HH:mm:ss\",\r\n },\r\n };\r\n\r\n /**\r\n * Last write time\r\n */\r\n protected lastWriteTime = Date.now();\r\n\r\n /**\r\n * A flag to determine if the file is being written\r\n */\r\n protected isWriting = false;\r\n\r\n /**\r\n * Handle for the periodic flush interval. Stored so it can be cleared\r\n * in `dispose()` — long-lived processes that create channels dynamically\r\n * would otherwise leak one timer per channel.\r\n */\r\n protected flushIntervalHandle?: NodeJS.Timeout;\r\n\r\n /**\r\n * Check file size for file rotation\r\n */\r\n protected async checkAndRotateFile(filePath = this.filePath) {\r\n if (!this.config(\"rotate\")) return;\r\n\r\n try {\r\n const stats = await fs.promises.stat(filePath);\r\n if (stats.size >= this.config(\"maxFileSize\")!) {\r\n await this.rotateLogFile();\r\n }\r\n } catch (error: any) {\r\n // ENOENT is expected when the file hasn't been created yet — there is\r\n // nothing to rotate, so stay silent. Surface anything else.\r\n if (error.code !== \"ENOENT\") {\r\n console.error(\"Error checking log file:\", error);\r\n }\r\n }\r\n }\r\n\r\n /**\r\n * Rotate log file\r\n */\r\n protected async rotateLogFile() {\r\n const fileName = `${this.fileName}-${this.config(\"rotateFileName\")}-${Date.now()}`;\r\n\r\n const extension = this.extension;\r\n\r\n const rotatedFilePath = path.join(this.storagePath, `${fileName}.${extension}`);\r\n\r\n await fs.promises.rename(this.filePath, rotatedFilePath).catch((error) => {\r\n console.error(\"Error rotating file:\", error);\r\n });\r\n }\r\n\r\n /**\r\n * Flush messages\r\n *\r\n * Starts a periodic re-check so low-traffic channels don't sit on buffered\r\n * entries indefinitely. The handle is stored on the instance so `dispose()`\r\n * can stop it — without this, every channel leaks a timer for the lifetime\r\n * of the process.\r\n */\r\n protected initMessageFlush() {\r\n this.flushIntervalHandle = setInterval(() => {\r\n if (\r\n this.messages.length > 0 &&\r\n (this.messages.length >= this.maxMessagesToWrite || Date.now() - this.lastWriteTime > 5000)\r\n ) {\r\n this.writeMessagesToFile();\r\n }\r\n }, 5000);\r\n }\r\n\r\n /**\r\n * Stop the background flush interval and drain any buffered entries.\r\n *\r\n * Call this when discarding a channel (e.g. reconfiguring the logger at\r\n * runtime) so the 5-second timer doesn't keep the event loop alive. Safe to\r\n * call more than once.\r\n */\r\n public dispose(): void {\r\n if (this.flushIntervalHandle) {\r\n clearInterval(this.flushIntervalHandle);\r\n this.flushIntervalHandle = undefined;\r\n }\r\n\r\n this.flushSync();\r\n }\r\n\r\n /**\r\n * Get file path\r\n */\r\n public get filePath() {\r\n const fileName = this.fileName;\r\n\r\n const extension = this.extension;\r\n\r\n return path.join(this.storagePath, `${fileName}.${extension}`);\r\n }\r\n\r\n /**\r\n * Get max messages\r\n */\r\n protected get maxMessagesToWrite(): number {\r\n return this.config(\"maxMessagesToWrite\")!;\r\n }\r\n\r\n /**\r\n * Get file name\r\n */\r\n public get fileName(): string {\r\n const debugLevel = this.config(\"chunk\")!;\r\n\r\n switch (debugLevel) {\r\n case \"single\":\r\n default:\r\n return this.config(\"name\")!;\r\n case \"daily\":\r\n return dayjs().format(\"DD-MM-YYYY\");\r\n case \"hourly\":\r\n return dayjs().format(\"DD-MM-YYYY-HH-00-00-a\");\r\n }\r\n }\r\n\r\n /**\r\n * Get file extension\r\n */\r\n public get extension(): string {\r\n return this.config(\"extension\")!;\r\n }\r\n\r\n /**\r\n * Get content\r\n */\r\n protected get content() {\r\n return this.messages.map((message) => message.content).join(EOL) + EOL;\r\n }\r\n\r\n /**\r\n * Get storage path\r\n */\r\n public get storagePath(): string {\r\n return this.config(\"storagePath\")!;\r\n }\r\n\r\n /**\r\n * {@inheritdoc}\r\n */\r\n protected async init() {\r\n const logsDirectory = this.storagePath;\r\n\r\n await ensureDirectoryAsync(logsDirectory);\r\n\r\n this.initMessageFlush();\r\n }\r\n\r\n /**\r\n * Synchronously flush messages\r\n */\r\n public flushSync(): void {\r\n if (this.messages.length === 0 && Object.keys(this.groupedMessages).length === 0) return;\r\n\r\n if (this.messagedShouldBeGrouped) {\r\n this.prepareGroupedMessages();\r\n for (const key in this.groupedMessages) {\r\n const directoryPath = path.join(this.storagePath, key);\r\n fs.mkdirSync(directoryPath, { recursive: true });\r\n const filePath = path.join(directoryPath, `${this.fileName}.${this.extension}`);\r\n const content = this.groupedMessages[key].map((message) => message.content).join(EOL) + EOL;\r\n fs.appendFileSync(filePath, content);\r\n }\r\n } else {\r\n fs.mkdirSync(this.storagePath, { recursive: true });\r\n fs.appendFileSync(this.filePath, this.content);\r\n }\r\n\r\n this.onSave();\r\n }\r\n\r\n /**\r\n * Asynchronously drain buffered entries to disk.\r\n *\r\n * The async analogue of {@link flushSync}: it reuses the same async writer\r\n * as the background interval, so a caller on a graceful-shutdown path can\r\n * `await channel.flush()` (or `await log.flush()`) and rely on the buffer\r\n * being on disk once it resolves. `JSONFileLog` inherits this unchanged —\r\n * its overridden `writeMessagesToFile` performs the JSON merge.\r\n */\r\n public async flush(): Promise {\r\n if (this.messages.length === 0 && Object.keys(this.groupedMessages).length === 0) {\r\n return;\r\n }\r\n\r\n // Clear the in-flight lock so a deliberate drain is never short-circuited\r\n // by a half-finished background write, then await the async writer to\r\n // completion — unlike the fire-and-forget interval, callers depend on the\r\n // buffer reaching disk before this resolves.\r\n this.isWriting = false;\r\n\r\n await this.writeMessagesToFile();\r\n }\r\n\r\n /**\r\n * {@inheritdoc}\r\n */\r\n public async log(data: LoggingData) {\r\n const { module, action, message, type: level, context } = data;\r\n\r\n if (!this.shouldBeLogged(data)) return;\r\n\r\n const { date: dateFormat, time } = this.getDateAndTimeFormat();\r\n\r\n const date = dayjs().format(dateFormat + \" \" + time);\r\n\r\n let content = `[${date}] [${level}] [${module}][${action}]: `;\r\n\r\n let stack: string | undefined;\r\n\r\n // check if message is an instance of Error\r\n if (message instanceof Error) {\r\n // in that case we need to store the error message and stack trace\r\n content += message.message + EOL;\r\n content += `[trace]` + EOL;\r\n content += message.stack;\r\n stack = message.stack;\r\n } else {\r\n content += message;\r\n }\r\n\r\n this.messages.push({\r\n content,\r\n level,\r\n date,\r\n module,\r\n action,\r\n stack,\r\n context,\r\n timestamp: new Date().toISOString(),\r\n });\r\n\r\n await this.checkIfMessagesShouldBeWritten(); // Immediate check on buffer size\r\n }\r\n\r\n /**\r\n * Check if messages should be written\r\n */\r\n protected async checkIfMessagesShouldBeWritten() {\r\n if (this.messages.length >= this.maxMessagesToWrite || Date.now() - this.lastWriteTime > 5000) {\r\n await this.writeMessagesToFile();\r\n }\r\n }\r\n\r\n /**\r\n * Should be called after messages are saved\r\n */\r\n protected onSave() {\r\n this.messages = [];\r\n this.groupedMessages = {};\r\n this.isWriting = false;\r\n this.lastWriteTime = Date.now();\r\n }\r\n\r\n /**\r\n * Check if messages should be grouped\r\n */\r\n protected get messagedShouldBeGrouped(): boolean {\r\n return Number(this.config(\"groupBy\")?.length) > 0;\r\n }\r\n\r\n /**\r\n * Write messages to the file\r\n */\r\n protected async writeMessagesToFile() {\r\n if (this.messages.length === 0 || this.isWriting || !this.isInitialized) return;\r\n\r\n this.isWriting = true;\r\n\r\n if (this.messagedShouldBeGrouped) {\r\n return await this.writeGroupedMessagesToFile();\r\n }\r\n\r\n await this.checkAndRotateFile(); // Ensure we check file size before writing\r\n\r\n try {\r\n await this.write(this.filePath, this.content);\r\n this.onSave();\r\n } catch (error) {\r\n console.error(\"Failed to write log:\", error);\r\n // Implement fallback logic here\r\n this.isWriting = false;\r\n }\r\n }\r\n\r\n /**\r\n * Write grouped messages to the file\r\n */\r\n protected async writeGroupedMessagesToFile(): Promise {\r\n // first step, is to group the messages\r\n this.prepareGroupedMessages();\r\n\r\n // now each key in the grouped messages, represents the directory path that should extend the storage path\r\n for (const key in this.groupedMessages) {\r\n const directoryPath = path.join(this.storagePath, key);\r\n\r\n await ensureDirectoryAsync(directoryPath);\r\n\r\n const filePath = path.join(directoryPath, `${this.fileName}.${this.extension}`);\r\n\r\n await this.checkAndRotateFile(filePath); // Ensure we check file size before writing\r\n\r\n const content = this.groupedMessages[key].map((message) => message.content).join(EOL) + EOL;\r\n\r\n try {\r\n await this.write(filePath, content);\r\n } catch (error) {\r\n console.error(\"Failed to write log:\", error);\r\n }\r\n }\r\n\r\n this.onSave();\r\n this.isWriting = false;\r\n }\r\n\r\n /**\r\n * Prepare grouped messages\r\n */\r\n protected prepareGroupedMessages(): void {\r\n this.messages.forEach((message) => {\r\n const key = this.config(\"groupBy\")!\r\n .map((groupKey) => encodeURIComponent(message[groupKey]))\r\n .join(\"/\");\r\n\r\n this.groupedMessages[key] = this.groupedMessages[key] || [];\r\n 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