{"version":3,"sources":["../../src/common/requestLogger.ts"],"sourcesContent":["import AsyncLock from \"async-lock\";\nimport { Buffer } from \"node:buffer\";\nimport { randomUUID } from \"node:crypto\";\nimport type { IncomingHttpHeaders, OutgoingHttpHeaders } from \"node:http\";\n\nimport { getSentryEventId } from \"./sentry.js\";\nimport {\n truncateExceptionMessage,\n truncateExceptionStackTrace,\n} from \"./serverErrorCounter.js\";\nimport type { SpanData } from \"./spanCollector.js\";\nimport TempGzipFile, { checkWritableFs } from \"./tempGzipFile.js\";\n\nconst MAX_BODY_SIZE = 50_000; // 50 KB (uncompressed)\nconst MAX_FILE_SIZE = 1_000_000; // 1 MB (compressed)\nconst MAX_FILES = 50;\nconst MAX_PENDING_WRITES = 100;\nconst MAX_LOG_MSG_LENGTH = 2048;\nconst BODY_TOO_LARGE = Buffer.from(\"\");\nconst BODY_MASKED = Buffer.from(\"\");\nconst MASKED = \"******\";\nconst ALLOWED_CONTENT_TYPES = [\n \"application/json\",\n \"application/ld+json\",\n \"application/problem+json\",\n \"application/vnd.api+json\",\n \"application/x-ndjson\",\n \"text/plain\",\n \"text/html\",\n];\nconst EXCLUDE_PATH_PATTERNS = [\n /\\/_?healthz?$/i,\n /\\/_?health[_-]?checks?$/i,\n /\\/_?heart[_-]?beats?$/i,\n /\\/ping$/i,\n /\\/ready$/i,\n /\\/live$/i,\n /\\/favicon(?:-[\\w-]+)?\\.(ico|png|svg)$/,\n /\\/apple-touch-icon(?:-[\\w-]+)?\\.png$/,\n /\\/robots\\.txt$/,\n /\\/sitemap\\.xml$/,\n /\\/manifest\\.json$/,\n /\\/site\\.webmanifest$/,\n /\\/service-worker\\.js$/,\n /\\/sw\\.js$/,\n /\\/\\.well-known\\//,\n];\nconst EXCLUDE_USER_AGENT_PATTERNS = [\n /health[-_ ]?check/i,\n /microsoft-azure-application-lb/i,\n /googlehc/i,\n /kube-probe/i,\n];\nconst MASK_QUERY_PARAM_PATTERNS = [\n /auth/i,\n /api-?key/i,\n /secret/i,\n /token/i,\n /password/i,\n /pwd/i,\n];\nconst MASK_HEADER_PATTERNS = [\n /auth/i,\n /api-?key/i,\n /secret/i,\n /token/i,\n /cookie/i,\n];\nconst MASK_BODY_FIELD_PATTERNS = [\n /password/i,\n /pwd/i,\n /token/i,\n /secret/i,\n /auth/i,\n /card[-_ ]?number/i,\n /ccv/i,\n /ssn/i,\n];\n\nexport type Request = {\n timestamp: number;\n method: string;\n path?: string;\n url: string;\n headers: [string, string][];\n size?: number;\n consumer?: string;\n body?: Buffer;\n};\n\nexport type Response = {\n statusCode: number;\n responseTime: number;\n headers: [string, string][];\n size?: number;\n body?: Buffer;\n};\n\nexport type LogRecord = {\n timestamp: number;\n logger?: string;\n level: string;\n message: string;\n};\n\nexport type RequestLoggingConfig = {\n enabled: boolean;\n logQueryParams: boolean;\n logRequestHeaders: boolean;\n logRequestBody: boolean;\n logResponseHeaders: boolean;\n logResponseBody: boolean;\n logException: boolean;\n captureLogs: boolean;\n captureTraces: boolean;\n maskQueryParams: RegExp[];\n maskHeaders: RegExp[];\n maskBodyFields: RegExp[];\n maskRequestBodyCallback?: (request: Request) => Buffer | null | undefined;\n maskResponseBodyCallback?: (\n request: Request,\n response: Response,\n ) => Buffer | null | undefined;\n excludePaths: RegExp[];\n excludeCallback?: (request: Request, response: Response) => boolean;\n};\n\nconst DEFAULT_CONFIG: RequestLoggingConfig = {\n enabled: false,\n logQueryParams: true,\n logRequestHeaders: false,\n logRequestBody: false,\n logResponseHeaders: true,\n logResponseBody: false,\n logException: true,\n captureLogs: false,\n captureTraces: false,\n maskQueryParams: [],\n maskHeaders: [],\n maskBodyFields: [],\n excludePaths: [],\n};\n\ntype RequestLogItem = {\n uuid: string;\n request: Request;\n response: Response;\n exception?: {\n type: string;\n message: string;\n stacktrace: string;\n sentryEventId?: string;\n };\n logs?: LogRecord[];\n spans?: SpanData[];\n traceId?: string;\n};\n\nexport default class RequestLogger {\n public config: RequestLoggingConfig;\n public enabled: boolean;\n public suspendUntil: number | null = null;\n private pendingWrites: RequestLogItem[] = [];\n private currentFile: TempGzipFile | null = null;\n private files: TempGzipFile[] = [];\n private maintainIntervalId?: NodeJS.Timeout;\n private maintainInProgress = false;\n private lock = new AsyncLock();\n\n constructor(config?: Partial) {\n this.config = { ...DEFAULT_CONFIG, ...config };\n this.enabled = this.config.enabled && checkWritableFs();\n\n if (this.enabled) {\n this.maintainIntervalId = setInterval(() => {\n this.maintain().catch(() => {});\n }, 1000);\n }\n }\n\n get maxBodySize() {\n return MAX_BODY_SIZE;\n }\n\n private shouldExcludePath(urlPath: string) {\n const patterns = [...this.config.excludePaths, ...EXCLUDE_PATH_PATTERNS];\n return matchPatterns(urlPath, patterns);\n }\n\n private shouldExcludeUserAgent(userAgent?: string) {\n return userAgent\n ? matchPatterns(userAgent, EXCLUDE_USER_AGENT_PATTERNS)\n : false;\n }\n\n private shouldMaskQueryParam(name: string) {\n const patterns = [\n ...this.config.maskQueryParams,\n ...MASK_QUERY_PARAM_PATTERNS,\n ];\n return matchPatterns(name, patterns);\n }\n\n private shouldMaskHeader(name: string) {\n const patterns = [...this.config.maskHeaders, ...MASK_HEADER_PATTERNS];\n return matchPatterns(name, patterns);\n }\n\n private shouldMaskBodyField(name: string) {\n const patterns = [\n ...this.config.maskBodyFields,\n ...MASK_BODY_FIELD_PATTERNS,\n ];\n return matchPatterns(name, patterns);\n }\n\n private getContentType(headers: [string, string][]) {\n return headers.find(([k]) => k.toLowerCase() === \"content-type\")?.[1];\n }\n\n private hasSupportedContentType(headers: [string, string][]) {\n const contentType = this.getContentType(headers);\n return this.isSupportedContentType(contentType);\n }\n\n public isSupportedContentType(contentType?: string | string[] | null) {\n if (Array.isArray(contentType) && contentType.length > 0) {\n contentType = contentType[0];\n }\n return (\n typeof contentType === \"string\" &&\n ALLOWED_CONTENT_TYPES.some((t) => contentType.startsWith(t))\n );\n }\n\n private static isHttps(headers: [string, string][]): boolean {\n return headers.some(([k, v]) => {\n switch (k.toLowerCase()) {\n case \"x-forwarded-proto\":\n case \"x-forwarded-protocol\":\n case \"x-forwarded-scheme\":\n case \"x-url-scheme\":\n case \"x-scheme\":\n return v.split(\",\")[0].trim().toLowerCase() === \"https\";\n case \"front-end-https\":\n case \"x-forwarded-ssl\":\n return v.toLowerCase() === \"on\";\n case \"forwarded\":\n return v.split(\",\")[0].trim().toLowerCase().includes(\"proto=https\");\n default:\n return false;\n }\n });\n }\n\n private maskQueryParams(search: string) {\n const params = new URLSearchParams(search);\n for (const [key] of params) {\n if (this.shouldMaskQueryParam(key)) {\n params.set(key, MASKED);\n }\n }\n return params.toString();\n }\n\n private maskHeaders(headers: [string, string][]): [string, string][] {\n return headers.map(([k, v]) => [k, this.shouldMaskHeader(k) ? MASKED : v]);\n }\n\n private maskBody(data: any): any {\n if (typeof data === \"object\" && data !== null && !Array.isArray(data)) {\n const result: any = {};\n for (const [key, value] of Object.entries(data)) {\n if (typeof value === \"string\" && this.shouldMaskBodyField(key)) {\n result[key] = MASKED;\n } else {\n result[key] = this.maskBody(value);\n }\n }\n return result;\n }\n if (Array.isArray(data)) {\n return data.map((item) => this.maskBody(item));\n }\n return data;\n }\n\n private applyMasking(item: RequestLogItem) {\n // Apply user-provided maskRequestBodyCallback function\n if (\n this.config.maskRequestBodyCallback &&\n item.request.body &&\n item.request.body !== BODY_TOO_LARGE\n ) {\n try {\n const maskedBody = this.config.maskRequestBodyCallback(item.request);\n item.request.body = maskedBody ?? BODY_MASKED;\n } catch {\n item.request.body = undefined;\n }\n }\n\n // Apply user-provided maskResponseBodyCallback function\n if (\n this.config.maskResponseBodyCallback &&\n item.response.body &&\n item.response.body !== BODY_TOO_LARGE\n ) {\n try {\n const maskedBody = this.config.maskResponseBodyCallback(\n item.request,\n item.response,\n );\n item.response.body = maskedBody ?? BODY_MASKED;\n } catch {\n item.response.body = undefined;\n }\n }\n\n // Check request and response body sizes\n if (item.request.body && item.request.body.length > MAX_BODY_SIZE) {\n item.request.body = BODY_TOO_LARGE;\n }\n if (item.response.body && item.response.body.length > MAX_BODY_SIZE) {\n item.response.body = BODY_TOO_LARGE;\n }\n\n // Mask request and response body fields\n for (const key of [\"request\", \"response\"] as const) {\n const bodyData = item[key].body;\n if (\n !bodyData ||\n bodyData === BODY_TOO_LARGE ||\n bodyData === BODY_MASKED\n ) {\n continue;\n }\n\n try {\n const contentType = this.getContentType(item[key].headers);\n if (!contentType || /\\bjson\\b/i.test(contentType)) {\n const parsedBody = JSON.parse(bodyData.toString());\n const maskedBody = this.maskBody(parsedBody);\n item[key].body = Buffer.from(JSON.stringify(maskedBody));\n } else if (/\\bndjson\\b/i.test(contentType)) {\n const lines = bodyData\n .toString()\n .split(\"\\n\")\n .filter((line) => line.trim());\n const maskedLines = lines.map((line) => {\n try {\n const parsed = JSON.parse(line);\n const masked = this.maskBody(parsed);\n return JSON.stringify(masked);\n } catch {\n return line; // Keep unparseable lines as is\n }\n });\n item[key].body = Buffer.from(maskedLines.join(\"\\n\"));\n }\n } catch {\n // If parsing fails, leave body as is\n }\n }\n\n // Mask request and response headers\n item.request.headers = this.config.logRequestHeaders\n ? this.maskHeaders(item.request.headers)\n : [];\n item.response.headers = this.config.logResponseHeaders\n ? this.maskHeaders(item.response.headers)\n : [];\n\n // Mask query params\n const url = new URL(item.request.url);\n url.search = this.config.logQueryParams\n ? this.maskQueryParams(url.search)\n : \"\";\n item.request.url = url.toString();\n\n return item;\n }\n\n logRequest(\n request: Request,\n response: Response,\n error?: Error,\n logs?: LogRecord[],\n spans?: SpanData[],\n traceId?: string,\n ) {\n if (!this.enabled || this.suspendUntil !== null) return;\n\n const url = new URL(request.url);\n const path = request.path ?? url.pathname;\n const userAgent = request.headers.find(\n ([k]) => k.toLowerCase() === \"user-agent\",\n )?.[1];\n\n if (url.protocol === \"http:\" && RequestLogger.isHttps(request.headers)) {\n url.protocol = \"https:\";\n request.url = url.toString();\n }\n\n if (\n this.shouldExcludePath(path) ||\n this.shouldExcludeUserAgent(userAgent) ||\n (this.config.excludeCallback?.(request, response) ?? false)\n ) {\n return;\n }\n\n if (\n !this.config.logRequestBody ||\n !this.hasSupportedContentType(request.headers)\n ) {\n request.body = undefined;\n }\n if (\n !this.config.logResponseBody ||\n !this.hasSupportedContentType(response.headers)\n ) {\n response.body = undefined;\n }\n\n if (request.size !== undefined && request.size < 0) {\n request.size = undefined;\n }\n if (response.size !== undefined && response.size < 0) {\n response.size = undefined;\n }\n\n const item: RequestLogItem = {\n uuid: randomUUID(),\n request: request,\n response: response,\n exception:\n error && this.config.logException\n ? {\n type: error.name,\n message: truncateExceptionMessage(error.message),\n stacktrace: truncateExceptionStackTrace(error.stack || \"\"),\n sentryEventId: getSentryEventId(),\n }\n : undefined,\n };\n\n if (logs && logs.length > 0) {\n item.logs = logs.map((log) => ({\n timestamp: log.timestamp,\n logger: log.logger,\n level: log.level,\n message: truncateLogMessage(log.message),\n }));\n }\n if (spans && spans.length > 0) {\n item.spans = spans;\n }\n if (traceId) {\n item.traceId = traceId;\n }\n this.pendingWrites.push(item);\n\n if (this.pendingWrites.length > MAX_PENDING_WRITES) {\n this.pendingWrites.shift();\n }\n }\n\n async writeToFile() {\n if (!this.enabled || this.pendingWrites.length === 0) {\n return;\n }\n return this.lock.acquire(\"file\", async () => {\n // Snapshot the queue so the drain is bounded by what was pending when\n // the lock was acquired. Items pushed during this drain land in a fresh\n // array and are picked up on the next tick. Without this snapshot,\n // under sustained traffic the while-loop could hold the lock for far\n // longer than the maintain() interval, stacking up subsequent acquires.\n const items = this.pendingWrites;\n this.pendingWrites = [];\n if (items.length === 0) {\n return;\n }\n if (!this.currentFile) {\n this.currentFile = new TempGzipFile(\"request_logs\");\n }\n\n const lines: Buffer[] = [];\n for (let item of items) {\n item = this.applyMasking(item);\n\n const finalItem = {\n uuid: item.uuid,\n request: skipEmptyValues(item.request),\n response: skipEmptyValues(item.response),\n exception: item.exception,\n logs: item.logs,\n spans: item.spans,\n traceId: item.traceId,\n };\n\n // Set up body serialization for JSON\n [finalItem.request.body, finalItem.response.body].forEach((body) => {\n if (body) {\n // @ts-expect-error Override Buffer's default JSON serialization\n body.toJSON = function () {\n return this.toString(\"base64\");\n };\n }\n });\n\n lines.push(Buffer.from(JSON.stringify(finalItem)));\n }\n\n await this.currentFile.writeLines(lines);\n });\n }\n\n getFile() {\n return this.files.shift();\n }\n\n retryFileLater(file: TempGzipFile) {\n this.files.unshift(file);\n }\n\n async rotateFile() {\n return this.lock.acquire(\"file\", async () => {\n if (this.currentFile) {\n await this.currentFile.close();\n this.files.push(this.currentFile);\n this.currentFile = null;\n }\n });\n }\n\n async maintain() {\n // Non-reentrant: if a previous maintain() is still running, drop this\n // tick. Without this, every interval tick that arrives while the\n // current drain is in progress would push another acquire onto the\n // \"file\" lock queue, eventually exceeding async-lock's maxPending.\n if (this.maintainInProgress) {\n return;\n }\n this.maintainInProgress = true;\n try {\n await this.writeToFile();\n if (this.currentFile && this.currentFile.size > MAX_FILE_SIZE) {\n await this.rotateFile();\n }\n while (this.files.length > MAX_FILES) {\n const file = this.files.shift();\n file?.delete();\n }\n if (this.suspendUntil !== null && this.suspendUntil < Date.now()) {\n this.suspendUntil = null;\n }\n } finally {\n this.maintainInProgress = false;\n }\n }\n\n async clear() {\n this.pendingWrites = [];\n await this.rotateFile();\n this.files.forEach((file) => {\n file.delete();\n });\n this.files = [];\n }\n\n async close() {\n this.enabled = false;\n await this.clear();\n if (this.maintainIntervalId) {\n clearInterval(this.maintainIntervalId);\n }\n }\n}\n\nexport function convertHeaders(\n headers:\n | Headers\n | IncomingHttpHeaders\n | OutgoingHttpHeaders\n | Record\n | undefined,\n) {\n if (!headers) {\n return [];\n }\n if (headers instanceof Headers) {\n return Array.from(headers.entries());\n }\n return Object.entries(headers).flatMap(([key, value]) => {\n if (value === undefined) {\n return [];\n }\n if (Array.isArray(value)) {\n return value.map((v) => [key, v]);\n }\n return [[key, value.toString()]];\n }) as [string, string][];\n}\n\nexport function convertBody(body: any, contentType?: string | null) {\n if (!body || !contentType) {\n return;\n }\n try {\n if (contentType.startsWith(\"application/json\")) {\n if (isValidJsonString(body)) {\n return Buffer.from(body);\n } else {\n return Buffer.from(JSON.stringify(body));\n }\n }\n if (contentType.startsWith(\"text/\") && typeof body === \"string\") {\n return Buffer.from(body);\n }\n } catch (error) {\n return;\n }\n}\n\nfunction isValidJsonString(body: any) {\n if (typeof body !== \"string\") {\n return false;\n }\n try {\n JSON.parse(body);\n return true;\n } catch {\n return false;\n }\n}\n\nfunction matchPatterns(value: string, patterns: RegExp[]) {\n return patterns.some((pattern) => {\n return pattern.test(value);\n });\n}\n\nfunction skipEmptyValues>(data: T) {\n return Object.fromEntries(\n Object.entries(data).filter(([_, v]) => {\n if (v == null || Number.isNaN(v)) return false;\n if (Array.isArray(v) || Buffer.isBuffer(v) || typeof v === \"string\") {\n return v.length > 0;\n }\n return true;\n }),\n ) as Partial;\n}\n\nfunction truncateLogMessage(msg: string) {\n if (msg.length > MAX_LOG_MSG_LENGTH) {\n const suffix = \"... (truncated)\";\n return msg.slice(0, MAX_LOG_MSG_LENGTH - suffix.length) + suffix;\n }\n return 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