{"id":46767,"date":"2022-12-06T13:06:18","date_gmt":"2023-01-01T16:13:58","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8kafka-node%e7%9a%84consumer%e3%80%82\/"},"modified":"2024-04-29T04:00:15","modified_gmt":"2024-04-28T20:00:15","slug":"%e6%88%91%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8kafka-node%e7%9a%84consumer%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8kafka-node%e7%9a%84consumer%e3%80%82\/","title":{"rendered":"\u6211\u5c1d\u8bd5\u4f7f\u7528kafka-node\u7684Consumer"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u7531\u4e8e\u6709\u673a\u4f1a\u7a0d\u5fae\u4f7f\u7528\u4e86kafka-node\uff0c\u6211\u5c06\u5176\u603b\u7ed3\u4e3a\u5907\u5fd8\u5f55\u3002<br \/>\n\u987a\u4fbf\u63d0\u4e00\u4e0b\uff0c\u6211\u4e5f\u8bd5\u4e86node-rdkafka\uff0c\u4f46\u7531\u4e8e\u6211\u662f\u5728\u4f7f\u7528Windows\u673a\u5668\u8fdb\u884c\u5f00\u53d1\uff0c\u65e0\u6cd5\u7f16\u8bd1\u6210\u529f\uff0c\u6240\u4ee5\u6211\u653e\u5f03\u4e86\u3002<\/p>\n<h1>\u6d88\u8d39\u8005\u7c7b\u578b zh\u011b<\/h1>\n<p>\u6d88\u8d39\u8005\u5171\u6709\u56db\u79cd\u7c7b\u578b\uff0c\u5176\u529f\u80fd\u5dee\u5f02\u5982\u4e0b\u3002<br \/>\n\u5982\u679c\u6682\u65f6\u53ea\u662f\u5e0c\u671b\u7ed9\u4e88\u6211\u6700\u597d\u7684\u9009\u62e9\uff0c\u8bf7\u4f7f\u7528ConsumerGroupStream\u3002<\/p>\n<div>\n<div class=\"post-table\">\u540d\u524dStream\u6a5f\u80fdGroup\u6a5f\u80fdConsumer\u00d7\u00d7ConsumerStream\u25cb\u00d7ConsumerGroup\u00d7\u25cbConsumerGroupStream\u25cb\u25cb<\/div>\n<\/div>\n<h2>\u6d41\u5a92\u4f53\u529f\u80fd<\/h2>\n<p>\u636e\u6211\u4e86\u89e3\uff0cStreamAPI\u5df2\u7ecf\u5b9e\u73b0\u4e86\u7f13\u51b2\u529f\u80fd\u3002\u5f88\u53ef\u80fd\u6548\u7387\u66f4\u9ad8\u3002<br \/>\n\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4e0e\u666e\u901a\u7684Consumer\u4e0d\u540c\uff0c\u201cdata\u201d\u800c\u4e0d\u662f\u201cmessage\u201d\u7528\u4e8e\u4e8b\u4ef6\u901a\u77e5\u3002<\/p>\n<h2>\u7fa4\u7ec4\u529f\u80fd<\/h2>\n<p>\u6ca1\u6709Group\u529f\u80fd\u7684Consumer\u9700\u8981\u663e\u5f0f\u6307\u5b9a\u8981\u8bfb\u53d6\u7684\u5206\u533a\u3002\uff08\u5982\u679c\u4e0d\u6307\u5b9a\uff0c\u9ed8\u8ba4\u53ea\u8bfb\u53d60\u53f7\u5206\u533a\uff0c\u5176\u4ed6\u5206\u533a\u5c06\u4e0d\u88ab\u8bfb\u53d6\uff09<br \/>\n\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u6211\u8ba4\u4e3a\u7528\u6237\u5e0c\u671b\u5728\u4f7f\u7528\u591a\u4e2a\u5206\u533a\u548c\u591a\u4e2a\u6d88\u8d39\u8005\u8fdb\u884c\u6269\u5c55\u65f6\uff0c\u80fd\u591f\u81ea\u52a8\u5206\u914d\u5206\u533a\u5e76\u8fbe\u5230\u826f\u597d\u7684\u6548\u679c\uff0c\u6240\u4ee5\u4f1a\u9009\u62e9\u8fd9\u4e2a\u9009\u9879\u3002<br \/>\n\u76f8\u53cd\uff0c\u5982\u679c\u6709\u8981\u6c42\u8981\u5c06\u7279\u5b9a\u5206\u533a\u7684\u5904\u7406\u4ea4\u7ed9\u7279\u5b9a\u7684\u6d88\u8d39\u8005\uff0c\u5219\u9700\u8981\u4f7f\u7528\u4e0d\u5e26Group\u529f\u80fd\u7684\u9009\u9879\u3002<\/p>\n<h1>\u8bd5\u7528\u4e00\u4e0b\u770b\u770b<\/h1>\n<h2>\u51c6\u5907\u4e00\u672c\u5361\u592b\u5361\u7684\u4e66\u7c4d<\/h2>\n<p>\u8bf7\u4f7f\u7528docker\u5feb\u901f\u51c6\u5907\uff0c\u5728\u5177\u67093\u4e2a\u5206\u533a\u7684test\u4e3b\u9898\u4e2d\u968f\u610f\u653e\u5165\u4e00\u4e9b\u6d88\u606f\u3002<\/p>\n<pre class=\"post-pre\"><code>docker run <span class=\"nt\">-p<\/span> 2181:2181 <span class=\"nt\">-p<\/span> 9092:9092 <span class=\"nt\">--env<\/span> <span class=\"nv\">ADVERTISED_HOST<\/span><span class=\"o\">=<\/span><span class=\"sb\">`<\/span>docker-machine ip <span class=\"se\">\\`<\/span>docker-machine active<span class=\"se\">\\`<\/span><span class=\"sb\">`<\/span> <span class=\"nt\">--env<\/span> <span class=\"nv\">ADVERTISED_PORT<\/span><span class=\"o\">=<\/span>9092 <span class=\"nt\">--name<\/span> test_kafka spotify\/kafka\r\ndocker <span class=\"nb\">exec<\/span> <span class=\"nt\">-it<\/span> test_kafka bash\r\n<span class=\"nb\">cd<\/span> \/opt\/kafka<span class=\"k\">*<\/span>\r\nbin\/kafka-topics.sh <span class=\"nt\">--create<\/span> <span class=\"nt\">--zookeeper<\/span> localhost:2181 <span class=\"nt\">--replication-factor<\/span> 1 <span class=\"nt\">--partitions<\/span> 3 <span class=\"nt\">--topic<\/span> <span class=\"nb\">test\r\n<\/span>bin\/kafka-console-producer.sh <span class=\"nt\">--broker-list<\/span> localhost:9092 <span class=\"nt\">--topic<\/span> <span class=\"nb\">test<\/span>\r\n<span class=\"o\">&gt;<\/span> message1\r\n<span class=\"o\">&gt;<\/span> message2\r\n<span class=\"o\">&gt;<\/span> message3\r\n<span class=\"o\">&gt;<\/span> message4\r\nbin\/kafka-console-consumer.sh <span class=\"nt\">--bootstrap-server<\/span> localhost:9092 <span class=\"nt\">--topic<\/span> <span class=\"nb\">test<\/span> <span class=\"nt\">--from-beginning<\/span>\r\n<\/code><\/pre>\n<h2>\u786e\u5b9aDocker machine\u7684IP\u5730\u5740<\/h2>\n<p>\u56e0\u4e3a\u662f\u5728Docker Machine\u4e0a\u8fd0\u884c\uff0c\u6240\u4ee5\u5728\u4ece\u672c\u5730\u8fde\u63a5\u65f6\u9700\u8981\u5148\u786e\u8ba4IP\u5730\u5740\u3002<\/p>\n<pre class=\"post-pre\"><code>docker-machine ip\r\n<span class=\"c\"># 192.168.99.100<\/span>\r\n<\/code><\/pre>\n<h2>\u4f7f\u7528ConsumerGroupStream\u8fdb\u884c\u52a0\u8f7d<\/h2>\n<pre class=\"post-pre\"><code><span class=\"nb\">mkdir <\/span>kafka-test\r\n<span class=\"nb\">cd <\/span>kafka-test\r\nnpm init <span class=\"nt\">-f<\/span>\r\nnpm i kafka-node\r\n<span class=\"nb\">touch <\/span>test.js\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">kafka<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">require<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">kafka-node<\/span><span class=\"dl\">'<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">consumer<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nx\">kafka<\/span><span class=\"p\">.<\/span><span class=\"nx\">ConsumerGroupStream<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">kafkaHost<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">192.168.99.100:9092<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">groupId<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">TestGroup<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">fromOffset<\/span><span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">earliest<\/span><span class=\"dl\">'<\/span>\r\n<span class=\"p\">},<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">test<\/span><span class=\"dl\">'<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"nx\">consumer<\/span><span class=\"p\">.<\/span><span class=\"nx\">on<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">data<\/span><span class=\"dl\">'<\/span><span class=\"p\">,<\/span> <span class=\"nx\">message<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nx\">console<\/span><span class=\"p\">.<\/span><span class=\"nx\">log<\/span><span class=\"p\">(<\/span><span class=\"nx\">message<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">})<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>node test.js\r\n<span class=\"o\">{<\/span> topic: <span class=\"s1\">'test'<\/span>,\r\n  value: <span class=\"s1\">'message3'<\/span>,\r\n  offset: 0,\r\n  partition: 0,\r\n  highWaterOffset: 1,\r\n  key: null,\r\n  timestamp: 2019-04-07T16:56:45.611Z <span class=\"o\">}<\/span>\r\n<span class=\"o\">{<\/span> topic: <span class=\"s1\">'test'<\/span>,\r\n  value: <span class=\"s1\">'message2'<\/span>,\r\n  offset: 0,\r\n  partition: 1,\r\n  highWaterOffset: 1,\r\n  key: null,\r\n  timestamp: 2019-04-07T16:56:42.667Z <span class=\"o\">}<\/span>\r\n<span class=\"o\">{<\/span> topic: <span class=\"s1\">'test'<\/span>,\r\n  value: <span class=\"s1\">'message1'<\/span>,\r\n  offset: 0,\r\n  partition: 2,\r\n  highWaterOffset: 2,\r\n  key: null,\r\n  timestamp: 2019-04-07T16:56:40.005Z <span class=\"o\">}<\/span>\r\n<span class=\"o\">{<\/span> topic: <span class=\"s1\">'test'<\/span>,\r\n  value: <span class=\"s1\">'message4'<\/span>,\r\n  offset: 1,\r\n  partition: 2,\r\n  highWaterOffset: 2,\r\n  key: null,\r\n  timestamp: 2019-04-07T16:56:48.987Z <span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5168\u90e8\u5185\u5bb9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 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