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							124 lines
						
					
					
						
							3.2 KiB
						
					
					
				
			
		
		
	
	
							124 lines
						
					
					
						
							3.2 KiB
						
					
					
				'use strict'
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/**
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 * Code imported from `pino-http`
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 * Repo: https://github.com/pinojs/pino-http
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 * License: MIT (https://raw.githubusercontent.com/pinojs/pino-http/master/LICENSE)
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 */
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const nullLogger = require('abstract-logging')
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const pino = require('pino')
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const { serializersSym } = pino.symbols
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const { FST_ERR_LOG_INVALID_DESTINATION } = require('./errors')
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function createPinoLogger (opts, stream) {
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  stream = stream || opts.stream
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  delete opts.stream
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  if (stream && opts.file) {
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    throw new FST_ERR_LOG_INVALID_DESTINATION()
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  } else if (opts.file) {
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    // we do not have stream
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    stream = pino.destination(opts.file)
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    delete opts.file
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  }
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  const prevLogger = opts.logger
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  const prevGenReqId = opts.genReqId
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  let logger = null
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  if (prevLogger) {
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    opts.logger = undefined
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    opts.genReqId = undefined
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    // we need to tap into pino internals because in v5 it supports
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    // adding serializers in child loggers
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    if (prevLogger[serializersSym]) {
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      opts.serializers = Object.assign({}, opts.serializers, prevLogger[serializersSym])
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    }
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    logger = prevLogger.child({}, opts)
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    opts.logger = prevLogger
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    opts.genReqId = prevGenReqId
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  } else {
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    logger = pino(opts, stream)
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  }
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  return logger
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}
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const serializers = {
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  req: function asReqValue (req) {
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    return {
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      method: req.method,
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      url: req.url,
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      version: req.headers && req.headers['accept-version'],
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      hostname: req.hostname,
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      remoteAddress: req.ip,
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      remotePort: req.socket ? req.socket.remotePort : undefined
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    }
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  },
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  err: pino.stdSerializers.err,
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  res: function asResValue (reply) {
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    return {
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      statusCode: reply.statusCode
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    }
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  }
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}
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function now () {
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  const ts = process.hrtime()
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  return (ts[0] * 1e3) + (ts[1] / 1e6)
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}
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function createLogger (options) {
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  if (isValidLogger(options.logger)) {
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    const logger = createPinoLogger({
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      logger: options.logger,
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      serializers: Object.assign({}, serializers, options.logger.serializers)
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    })
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    return { logger, hasLogger: true }
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  } else if (!options.logger) {
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    const logger = nullLogger
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    logger.child = () => logger
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    return { logger, hasLogger: false }
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  } else {
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    const localLoggerOptions = {}
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    if (Object.prototype.toString.call(options.logger) === '[object Object]') {
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      Reflect.ownKeys(options.logger).forEach(prop => {
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        Object.defineProperty(localLoggerOptions, prop, {
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          value: options.logger[prop],
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          writable: true,
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          enumerable: true,
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          configurable: true
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        })
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      })
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    }
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    localLoggerOptions.level = localLoggerOptions.level || 'info'
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    localLoggerOptions.serializers = Object.assign({}, serializers, localLoggerOptions.serializers)
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    options.logger = localLoggerOptions
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    const logger = createPinoLogger(options.logger)
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    return { logger, hasLogger: true }
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  }
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}
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function isValidLogger (logger) {
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  if (!logger) {
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    return false
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  }
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  let result = true
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  const methods = ['info', 'error', 'debug', 'fatal', 'warn', 'trace', 'child']
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  for (let i = 0; i < methods.length; i += 1) {
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    if (!logger[methods[i]] || typeof logger[methods[i]] !== 'function') {
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      result = false
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      break
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    }
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  }
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  return result
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}
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module.exports = {
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  createLogger,
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  serializers,
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  now
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}
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