1 | 'use strict'
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2 | const net = require('net')
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3 | const co = require('co')
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4 | const expect = require('expect.js')
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5 |
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6 | const describe = require('mocha').describe
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7 | const it = require('mocha').it
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8 | const before = require('mocha').before
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9 | const after = require('mocha').after
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10 |
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11 | const Pool = require('../')
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12 |
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13 | describe('connection timeout', () => {
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14 | const connectionFailure = new Error('Temporary connection failure')
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15 |
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16 | before((done) => {
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17 | this.server = net.createServer((socket) => {
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18 | socket.on('data', () => {
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19 |
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20 | })
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21 | })
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22 |
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23 | this.server.listen(() => {
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24 | this.port = this.server.address().port
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25 | done()
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26 | })
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27 | })
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28 |
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29 | after((done) => {
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30 | this.server.close(done)
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31 | })
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32 |
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33 | it('should callback with an error if timeout is passed', (done) => {
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34 | const pool = new Pool({ connectionTimeoutMillis: 10, port: this.port, host: 'localhost' })
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35 | pool.connect((err, client, release) => {
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36 | expect(err).to.be.an(Error)
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37 | expect(err.message).to.contain('timeout')
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38 | expect(client).to.equal(undefined)
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39 | expect(pool.idleCount).to.equal(0)
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40 | done()
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41 | })
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42 | })
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43 |
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44 | it('should reject promise with an error if timeout is passed', (done) => {
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45 | const pool = new Pool({ connectionTimeoutMillis: 10, port: this.port, host: 'localhost' })
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46 | pool.connect().catch(err => {
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47 | expect(err).to.be.an(Error)
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48 | expect(err.message).to.contain('timeout')
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49 | expect(pool.idleCount).to.equal(0)
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50 | done()
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51 | })
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52 | })
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53 |
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54 | it('should handle multiple timeouts', co.wrap(function* () {
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55 | const errors = []
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56 | const pool = new Pool({ connectionTimeoutMillis: 1, port: this.port, host: 'localhost' })
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57 | for (var i = 0; i < 15; i++) {
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58 | try {
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59 | yield pool.connect()
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60 | } catch (e) {
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61 | errors.push(e)
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62 | }
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63 | }
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64 | expect(errors).to.have.length(15)
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65 | }.bind(this)))
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66 |
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67 | it('should timeout on checkout of used connection', (done) => {
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68 | const pool = new Pool({ connectionTimeoutMillis: 100, max: 1 })
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69 | pool.connect((err, client, release) => {
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70 | expect(err).to.be(undefined)
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71 | expect(client).to.not.be(undefined)
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72 | pool.connect((err, client) => {
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73 | expect(err).to.be.an(Error)
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74 | expect(client).to.be(undefined)
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75 | release()
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76 | pool.end(done)
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77 | })
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78 | })
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79 | })
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80 |
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81 | it('should not break further pending checkouts on a timeout', (done) => {
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82 | const pool = new Pool({ connectionTimeoutMillis: 200, max: 1 })
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83 | pool.connect((err, client, releaseOuter) => {
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84 | expect(err).to.be(undefined)
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85 |
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86 | pool.connect((err, client) => {
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87 | expect(err).to.be.an(Error)
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88 | expect(client).to.be(undefined)
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89 | releaseOuter()
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90 | })
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91 |
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92 | setTimeout(() => {
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93 | pool.connect((err, client, releaseInner) => {
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94 | expect(err).to.be(undefined)
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95 | expect(client).to.not.be(undefined)
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96 | releaseInner()
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97 | pool.end(done)
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98 | })
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99 | }, 100)
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100 | })
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101 | })
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102 |
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103 | it('should timeout on query if all clients are busy', (done) => {
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104 | const pool = new Pool({ connectionTimeoutMillis: 100, max: 1 })
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105 | pool.connect((err, client, release) => {
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106 | expect(err).to.be(undefined)
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107 | expect(client).to.not.be(undefined)
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108 | pool.query('select now()', (err, result) => {
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109 | expect(err).to.be.an(Error)
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110 | expect(result).to.be(undefined)
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111 | release()
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112 | pool.end(done)
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113 | })
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114 | })
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115 | })
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116 |
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117 | it('should recover from timeout errors', (done) => {
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118 | const pool = new Pool({ connectionTimeoutMillis: 100, max: 1 })
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119 | pool.connect((err, client, release) => {
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120 | expect(err).to.be(undefined)
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121 | expect(client).to.not.be(undefined)
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122 | pool.query('select now()', (err, result) => {
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123 | expect(err).to.be.an(Error)
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124 | expect(result).to.be(undefined)
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125 | release()
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126 | pool.query('select $1::text as name', ['brianc'], (err, res) => {
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127 | expect(err).to.be(undefined)
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128 | expect(res.rows).to.have.length(1)
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129 | pool.end(done)
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130 | })
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131 | })
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132 | })
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133 | })
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134 |
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135 | it('continues processing after a connection failure', (done) => {
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136 | const Client = require('pg').Client
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137 | const orgConnect = Client.prototype.connect
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138 | let called = false
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139 |
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140 | Client.prototype.connect = function (cb) {
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141 |
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142 | if (!called) {
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143 | called = true
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144 |
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145 | return setTimeout(() => {
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146 | cb(connectionFailure)
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147 | }, 100)
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148 | }
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149 |
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150 | orgConnect.call(this, cb)
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151 | }
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152 |
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153 | const pool = new Pool({
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154 | Client: Client,
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155 | connectionTimeoutMillis: 1000,
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156 | max: 1
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157 | })
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158 |
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159 | pool.connect((err, client, release) => {
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160 | expect(err).to.be(connectionFailure)
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161 |
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162 | pool.query('select $1::text as name', ['brianc'], (err, res) => {
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163 | expect(err).to.be(undefined)
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164 | expect(res.rows).to.have.length(1)
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165 | pool.end(done)
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166 | })
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167 | })
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168 | })
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169 |
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170 | it('releases newly connected clients if the queued already timed out', (done) => {
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171 | const Client = require('pg').Client
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172 |
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173 | const orgConnect = Client.prototype.connect
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174 |
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175 | let connection = 0
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176 |
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177 | Client.prototype.connect = function (cb) {
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178 |
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179 | if (connection === 0) {
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180 | connection++
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181 |
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182 | return setTimeout(() => {
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183 | cb(connectionFailure)
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184 | }, 300)
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185 | }
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186 |
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187 |
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188 | if (connection === 1) {
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189 | connection++
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190 |
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191 | return setTimeout(() => {
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192 | orgConnect.call(this, cb)
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193 | }, 1000)
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194 | }
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195 |
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196 | orgConnect.call(this, cb)
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197 | }
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198 |
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199 | const pool = new Pool({
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200 | Client: Client,
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201 | connectionTimeoutMillis: 1000,
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202 | max: 1
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203 | })
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204 |
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205 |
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206 | pool.connect((err, client, release) => {
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207 | expect(err).to.be(connectionFailure)
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208 | })
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209 |
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210 |
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211 | let called = 0
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212 | pool.connect((err, client, release) => {
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213 |
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214 | expect(called++).to.be(0)
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215 | expect(err).to.be.an(Error)
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216 |
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217 | pool.query('select $1::text as name', ['brianc'], (err, res) => {
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218 | expect(err).to.be(undefined)
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219 | expect(res.rows).to.have.length(1)
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220 | pool.end(done)
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221 | })
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222 | })
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223 | })
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224 | })
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