nodejs rabbitmq使用
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 | var amqp = require( 'amqp' ) 1. 一个发送者, 多个消费者。 exchange发送3条消息, 每个队列接收3条消息相同 connection.on( 'ready' , function () { var exchange = connection.exchange( 'exchange_name' , { type: 'fanout' , autoDelete: false }); connection.queue( "queue_name" , { autoDelete: false }, function (queue) { queue.bind( 'exchange_name' , 'queue_name' , function () { exchange.publish( 'queue_name' , 'this is message is testing ......' ); exchange.publish( 'queue_name' , 'this is message is testing3 ......' ) setTimeout( function () { console.log( "Single queue bind callback succeeded" ); //exchange.destroy(); //queue.destroy();node connection.end(); connection.destroy(); }, 5000); }) //同一个消息多次订阅同一个队列,只会收到一次消息 /* ack:true,确认收到一条消息后,后续对列中的消息接收不到 prefetchCount:每个消费者接收的消息平均, */ // queue.subscribe({ack:true,prefetchCount:1},function (message) { // console.log('2At 5 second recieved message is:'+ message.data); // }); // queue.subscribe({ack:true,prefetchCount:1},function (message) { // console.log('At 5 second recieved message is:'+ message.data); // }); queue.subscribe( function (message) { console.log( '2At 5 second recieved message is:' + message.data); }); // queue.subscribe(function (message) { // console.log('1 5 second recieved message is:'+ message.data); // }); }) connection.queue( "queue_name1" , { autoDelete: false }, function (queue) { queue.bind( 'exchange_name' , 'queue_name1' , function () { exchange.publish( 'queue_name1' , 'this is queue_name1 is testing4 ......' ) }) queue.subscribe( function (message) { console.log( 'queue_name1 5 second recieved message is:' + message.data); }); }) }) 打印: queue_name1 5 second recieved message is: this is message is testing...... 2 At 5 second recieved message is: this is message is testing...... 2 At 5 second recieved message is: this is message is testing3...... queue_name1 5 second recieved message is: this is message is testing3...... 2 At 5 second recieved message is: this is queue_name1 is testing4...... queue_name1 5 second recieved message is: this is queue_name1 is testing4...... 2. exchange的type为direct, 每个个队列, 只能收到指定的队列消息 connection.on( 'ready' , function () { var exchange = connection.exchange( 'exchange_name2' , { type: 'direct' , autoDelete: false }); connection.queue( "queue_name" , { autoDelete: false }, function (queue) { queue.bind( 'exchange_name2' , 'queue_name' , function () { exchange.publish( 'queue_name' , 'this is message is testing ......' ); exchange.publish( 'queue_name' , 'this is message is testing2222 ......' ); setTimeout( function () { console.log( "Single queue bind callback succeeded" ); //exchange.destroy(); //queue.destroy(); connection.end(); connection.destroy(); }, 5000) }) queue.subscribe( function (message) { console.log( 'At 2:' + message.data); }) queue.subscribe( function (message) { console.log( 'At 1:' + message.data); }) }) connection.queue( 'q2' , { autoDelete: false }, function (q) { q.bind( 'exchange_name2' , 'q2' , function () { exchange.publish( 'q2' , 'is form q2' ) }) q.subscribe( function (msg) { console.log( "q2: " + msg.data) }) }) }) 打印: At 2: this is message is testing...... At 1: this is message is testing2222...... q2: is form q2 3. 参数尝试, echange, queue, publish持久化 const amqp = require( 'amqp' ); var connection = amqp.createConnection({ host: '127.0.0.1' , port: 5672, login: 'test' , password: '123' , vhost: '/test' }); connection.on( 'error' , function (err) { console.log( 'Connection error' , err); }); connection.on( 'ready' , function () { // Options // - type 'fanout', 'direct', or 'topic' (default) // - passive (boolean) // - durable (boolean) // - autoDelete (boolean, default true) var exchange = connection.exchange( 'exchange_name' , { type: 'fanout' , autoDelete: false }); // - passive (boolean) // - durable (boolean)持久化 // - exclusive (boolean) // - autoDelete (boolean, default true) //'arguments': {'x-expires': 3600000} connection.queue( "queue_name8" , { autoDelete: false , durable: true }, function (queue) { queue.bind( 'exchange_name' , 'queue_name8' , function () { // the third argument can specify additional options // - mandatory (boolean, default false) // - immediate (boolean, default false) // - contentType (default 'application/octet-stream') // - contentEncoding // - headers // - deliveryMode // - priority (0-9) // - correlationId // - replyTo // - expiration // - messageId // - timestamp // - userId // - appId // - clusterId // exchange.publish( 'queue_name8' , 'this is message is testing ......' , { deliveryMode: 2 }); exchange.publish( 'queue_name8' , 'this is message is testing3 ......' , { deliveryMode: 2 }) setTimeout( function () { console.log( "Single queue bind callback succeeded" ); //exchange.destroy(); //queue.destroy();node connection.end(); connection.destroy(); }, 5000); }) //同一个消息多次订阅同一个队列,只会收到一次消息 /* ack:true,确认收到一条消息后,后续对列中的消息接收不到,如果需要下条消息,调用q.shift() prefetchCount:每个消费者接收的消息平均, */ // queue.subscribe({ack:true,prefetchCount:1},function (message) { // console.log('2At 5 second recieved message is:'+ message.data); // }); // queue.subscribe({ack:true,prefetchCount:1},function (message) { // console.log('At 5 second recieved message is:'+ message.data); // }); queue.subscribe( function (message) { console.log( '2At 5 second recieved message is:' + message.data); }); // queue.subscribe(function (message) { // console.log('1 5 second recieved message is:'+ message.data); // }); }) connection.queue( "queue_name9" , { autoDelete: false , durable: true }, function (queue) { queue.bind( 'exchange_name' , 'queue_name9' , function () { exchange.publish( 'queue_name9' , 'this is queue_name1 is testing4 ......' , { deliveryMode: 2 }) }) queue.subscribe( function (message) { console.log( 'queue_name1 7 second recieved message is:' + message.data); }); }) }) 4. 确认收到消息, 继续接收消息 var queName = 'test_q3' , ex = 'test_ex' ; connection.on( 'ready' , function () { var ex = connection.exchange(`${ex}`, { type: 'fanout' , durable: true , autoDelete: false }); connection.queue(`${queName}`, { durable: true , autoDelete: false }, function (q) { q.bind(ex, queName, function () { ex.publish(queName, 'test msg1' , { deliveryMode: 2 }) ex.publish(queName, 'test msg2 msg2' , { deliveryMode: 2 }) }) setTimeout( function () { console.log( "Single queue bind callback succeeded" ); //exchange.destroy(); //queue.destroy();node connection.end(); connection.destroy(); }, 1000); q.subscribe({ ack: true , prefetchCount: 1 }, function (msg) { q.shift() console.log( 'receive msg : ' + msg.data); }) }) }) 注意: 同一个exhcange中的queuename, exhcange, type方式一旦在程序中确定, 就不能改变 |
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nodeJS笔记
, RabbitMQ学习记录
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