server/helpers/requests.js

   1 'use strict'
   2
   3 var async = require('async')
   4 var config = require('config')
   5 var request = require('request')
   6 var replay = require('request-replay')
   7
   8 var constants = require('../initializers/constants')
   9 var logger = require('./logger')
  10 var peertubeCrypto = require('./peertubeCrypto')
  11
  12 var http = config.get('webserver.https') ? 'https' : 'http'
  13 var host = config.get('webserver.host')
  14 var port = config.get('webserver.port')
  15
  16 var requests = {
  17   makeMultipleRetryRequest: makeMultipleRetryRequest
  18 }
  19
  20 function makeMultipleRetryRequest (all_data, pods, callbackEach, callback) {
  21   if (!callback) {
  22     callback = callbackEach
  23     callbackEach = null
  24   }
  25
  26   var url = http + '://' + host + ':' + port
  27   var signature
  28
  29   // Add signature if it is specified in the params
  30   if (all_data.method === 'POST' && all_data.data && all_data.sign === true) {
  31     signature = peertubeCrypto.sign(url)
  32   }
  33
  34   // Make a request for each pod
  35   async.each(pods, function (pod, callback_each_async) {
  36     function callbackEachRetryRequest (err, response, body, url, pod) {
  37       if (callbackEach !== null) {
  38         callbackEach(err, response, body, url, pod, function () {
  39           callback_each_async()
  40         })
  41       } else {
  42         callback_each_async()
  43       }
  44     }
  45
  46     var params = {
  47       url: pod.url + all_data.path,
  48       method: all_data.method
  49     }
  50
  51     // Add data with POST requst ?
  52     if (all_data.method === 'POST' && all_data.data) {
  53       // Encrypt data ?
  54       if (all_data.encrypt === true) {
  55         // TODO: ES6 with let
  56         ;(function (copy_params, copy_url, copy_pod, copy_signature) {
  57           peertubeCrypto.encrypt(pod.publicKey, JSON.stringify(all_data.data), function (err, encrypted) {
  58             if (err) return callback(err)
  59
  60             copy_params.json = {
  61               data: encrypted.data,
  62               key: encrypted.key
  63             }
  64
  65             makeRetryRequest(copy_params, copy_url, copy_pod, copy_signature, callbackEachRetryRequest)
  66           })
  67         })(params, url, pod, signature)
  68       } else {
  69         params.json = { data: all_data.data }
  70         makeRetryRequest(params, url, pod, signature, callbackEachRetryRequest)
  71       }
  72     } else {
  73       makeRetryRequest(params, url, pod, signature, callbackEachRetryRequest)
  74     }
  75   }, callback)
  76 }
  77
  78 // ---------------------------------------------------------------------------
  79
  80 module.exports = requests
  81
  82 // ---------------------------------------------------------------------------
  83
  84 function makeRetryRequest (params, from_url, to_pod, signature, callbackEach) {
  85   // Append the signature
  86   if (signature) {
  87     params.json.signature = {
  88       url: from_url,
  89       signature: signature
  90     }
  91   }
  92
  93   logger.debug('Make retry requests to %s.', to_pod.url)
  94
  95   replay(
  96     request.post(params, function (err, response, body) {
  97       callbackEach(err, response, body, params.url, to_pod)
  98     }),
  99     {
 100       retries: constants.REQUEST_RETRIES,
 101       factor: 3,
 102       maxTimeout: Infinity,
 103       errorCodes: [ 'EADDRINFO', 'ETIMEDOUT', 'ECONNRESET', 'ESOCKETTIMEDOUT', 'ENOTFOUND', 'ECONNREFUSED' ]
 104     }
 105   ).on('replay', function (replay) {
 106     logger.info('Replaying request to %s. Request failed: %d %s. Replay number: #%d. Will retry in: %d ms.',
 107       params.url, replay.error.code, replay.error.message, replay.number, replay.delay)
 108   })
 109 }