1 | 'use strict'
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2 |
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3 |
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4 |
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5 |
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6 |
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7 |
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8 |
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9 | const abstractLogging = require('abstract-logging')
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10 | const pino = require('pino')
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11 | const { serializersSym } = pino.symbols
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12 | const { isValidLogger } = require('./validation')
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13 | const {
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14 | codes: {
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15 | FST_ERR_LOG_INVALID_DESTINATION
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16 | }
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17 | } = require('./errors')
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18 |
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19 | function createPinoLogger (opts, stream) {
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20 | stream = stream || opts.stream
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21 | delete opts.stream
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22 |
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23 | if (stream && opts.file) {
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24 | throw new FST_ERR_LOG_INVALID_DESTINATION()
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25 | } else if (opts.file) {
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26 |
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27 | stream = pino.destination(opts.file)
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28 | delete opts.file
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29 | }
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30 |
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31 | var prevLogger = opts.logger
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32 | var prevGenReqId = opts.genReqId
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33 | var logger = null
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34 |
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35 | if (prevLogger) {
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36 | opts.logger = undefined
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37 | opts.genReqId = undefined
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38 |
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39 |
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40 | if (prevLogger[serializersSym]) {
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41 | opts.serializers = Object.assign({}, opts.serializers, prevLogger[serializersSym])
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42 | }
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43 | logger = prevLogger.child(opts)
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44 | opts.logger = prevLogger
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45 | opts.genReqId = prevGenReqId
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46 | } else {
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47 | logger = pino(opts, stream)
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48 | }
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49 |
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50 | return logger
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51 | }
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52 |
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53 | const serializers = {
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54 | req: function asReqValue (req) {
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55 | return {
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56 | method: req.method,
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57 | url: req.url,
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58 | version: req.headers['accept-version'],
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59 | hostname: req.hostname,
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60 | remoteAddress: req.ip,
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61 | remotePort: req.connection.remotePort
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62 | }
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63 | },
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64 | err: pino.stdSerializers.err,
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65 | res: function asResValue (res) {
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66 | return {
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67 | statusCode: res.statusCode
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68 | }
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69 | }
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70 | }
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71 |
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72 | function now () {
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73 | var ts = process.hrtime()
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74 | return (ts[0] * 1e3) + (ts[1] / 1e6)
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75 | }
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76 |
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77 | function createLogger (options) {
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78 | if (isValidLogger(options.logger)) {
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79 | const logger = createPinoLogger({
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80 | logger: options.logger,
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81 | serializers: Object.assign({}, serializers, options.logger.serializers)
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82 | })
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83 | return { logger, hasLogger: true }
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84 | } else if (!options.logger) {
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85 | const logger = Object.create(abstractLogging)
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86 | logger.child = () => logger
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87 | return { logger, hasLogger: false }
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88 | } else {
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89 | options.logger = typeof options.logger === 'object' ? options.logger : {}
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90 | options.logger.level = options.logger.level || 'info'
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91 | options.logger.serializers = Object.assign({}, serializers, options.logger.serializers)
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92 | const logger = createPinoLogger(options.logger)
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93 | return { logger, hasLogger: true }
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94 | }
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95 | }
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96 |
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97 | module.exports = {
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98 | createLogger,
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99 | serializers,
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100 | now
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101 | }
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