{"id":46851,"date":"2023-09-19T01:42:50","date_gmt":"2023-11-19T22:48:30","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8kafka%e4%b8%ad%ef%bc%8c%e4%bd%bf%e7%94%a8golang%e8%bf%9b%e8%a1%8cproducer%e5%92%8cconsumer%e6%93%8d%e4%bd%9c%e3%80%82\/"},"modified":"2024-05-04T00:26:10","modified_gmt":"2024-05-03T16:26:10","slug":"%e5%9c%a8kafka%e4%b8%ad%ef%bc%8c%e4%bd%bf%e7%94%a8golang%e8%bf%9b%e8%a1%8cproducer%e5%92%8cconsumer%e6%93%8d%e4%bd%9c%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8kafka%e4%b8%ad%ef%bc%8c%e4%bd%bf%e7%94%a8golang%e8%bf%9b%e8%a1%8cproducer%e5%92%8cconsumer%e6%93%8d%e4%bd%9c%e3%80%82\/","title":{"rendered":"\u5728Kafka\u4e2d\uff0c\u4f7f\u7528Golang\u8fdb\u884cProducer\u548cConsumer\u64cd\u4f5c"},"content":{"rendered":"

\u6700\u521d<\/h1>\n

\u7531\u4e8e\u53ef\u80fd\u8981\u4f7f\u7528Kafka\uff0c\u56e0\u6b64\u6211\u4eec\u5c1d\u8bd5\u4e3a\u51e0\u79cd\u4e0d\u540c\u7684\u7f16\u7a0b\u8bed\u8a00\u7f16\u5199\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u4ee3\u7801\u3002\u8fd9\u6b21\u6211\u4eec\u9009\u62e9\u4f7f\u7528Golang\u7f16\u5199\u3002\u8fde\u63a5\u5230Kafka\u65f6\uff0c\u6211\u4eec\u5c06\u4f7f\u7528sarama[https:\/\/github.com\/Shopify\/sarama]\u5e93\u3002<\/p>\n

\u203b \u6211\u4e0d\u4f1a\u5bf9\u5361\u592b\u5361\u672c\u8eab\u8fdb\u884c\u89e3\u91ca\u3002<\/p>\n

\u6784\u6210<\/h2>\n

Golang\u7248\u672c\u4e3a1.9\uff0csarama\u7248\u672c\u4e3a1.16.0\uff0cVSCode\u7248\u672c\u4e3a1.22\u3002<\/p>\n

\u4ea7\u7269<\/h2>\n

\u5236\u7247\u4eba<\/h1>\n

\u53c2\u8003sarama\u7684\u6d4b\u8bd5\uff0c\u6211\u5c1d\u8bd5\u4ece\u751f\u4ea7\u8005\u5f00\u59cb\u5199\u3002sarama\u4f3c\u4e4e\u6709”SyncProducer”\u548c”AsyncProducer”\u4e24\u79cd\uff0c\u4f46\u7531\u4e8e\u8fd9\u6b21\u8981\u5728\u4e0d\u540c\u7684\u7ebf\u7a0b\u4e2d\u8fd0\u884c\uff0c\u6240\u4ee5\u6211\u9009\u62e9\u4e86”AsynProducer”\u3002<\/p>\n

\/\/ Producer\u90e8\u5206\u306e\u307f\u629c\u7c8b<\/span>\r\n\r\nvar<\/span> (<\/span>\r\n    \/\/ kafka\u306e\u30a2\u30c9\u30ec\u30b9<\/span>\r\n    bootstrapServers<\/span> =<\/span> flag<\/span>.<\/span>String<\/span>(<\/span>\"bootstrapServers\"<\/span>,<\/span> \"localhost:9092\"<\/span>,<\/span> \"kafka address\"<\/span>)<\/span>\r\n)<\/span>\r\n\r\n\/\/ SendMessage \u9001\u4fe1\u30e1\u30c3\u30bb\u30fc\u30b8<\/span>\r\ntype<\/span> SendMessage<\/span> struct<\/span> {<\/span>\r\n    Message<\/span>   string<\/span> `json:\"message\"`<\/span>\r\n    Timestamp<\/span> int64<\/span>  `json:\"timestamp\"`<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    flag<\/span>.<\/span>Parse<\/span>()<\/span>\r\n\r\n    if<\/span> *<\/span>bootstrapServers<\/span> ==<\/span> \"\"<\/span> {<\/span>\r\n        flag<\/span>.<\/span>PrintDefaults<\/span>()<\/span>\r\n        os<\/span>.<\/span>Exit<\/span>(<\/span>1<\/span>)<\/span>\r\n    }<\/span>\r\n\r\n    ctx<\/span>,<\/span> cancel<\/span> :=<\/span> context<\/span>.<\/span>WithCancel<\/span>(<\/span>context<\/span>.<\/span>Background<\/span>())<\/span>\r\n    defer<\/span> cancel<\/span>()<\/span>\r\n\r\n    signals<\/span> :=<\/span> make<\/span>(<\/span>chan<\/span> os<\/span>.<\/span>Signal<\/span>,<\/span> 1<\/span>)<\/span>\r\n    signal<\/span>.<\/span>Notify<\/span>(<\/span>signals<\/span>,<\/span> os<\/span>.<\/span>Interrupt<\/span>)<\/span>\r\n\r\n    brokers<\/span> :=<\/span> strings<\/span>.<\/span>Split<\/span>(<\/span>*<\/span>bootstrapServers<\/span>,<\/span> \",\"<\/span>)<\/span>\r\n    config<\/span> :=<\/span> sarama<\/span>.<\/span>NewConfig<\/span>()<\/span>\r\n\r\n    config<\/span>.<\/span>Producer<\/span>.<\/span>Return<\/span>.<\/span>Errors<\/span> =<\/span> true<\/span>\r\n    config<\/span>.<\/span>Producer<\/span>.<\/span>Return<\/span>.<\/span>Successes<\/span> =<\/span> true<\/span>\r\n    config<\/span>.<\/span>Producer<\/span>.<\/span>Retry<\/span>.<\/span>Max<\/span> =<\/span> 3<\/span>\r\n\r\n    producer<\/span>,<\/span> err<\/span> :=<\/span> sarama<\/span>.<\/span>NewAsyncProducer<\/span>(<\/span>brokers<\/span>,<\/span> config<\/span>)<\/span>\r\n    if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n        panic<\/span>(<\/span>err<\/span>)<\/span>\r\n    }<\/span>\r\n\r\n    defer<\/span> producer<\/span>.<\/span>AsyncClose<\/span>()<\/span>\r\n\r\n    \/\/ \u30d7\u30ed\u30c7\u30e5\u30fc\u30b5\u30fc\u30eb\u30fc\u30c1\u30f3<\/span>\r\n    go<\/span> func<\/span>()<\/span> {<\/span>\r\n    PRODUCER_FOR<\/span>:<\/span>\r\n        for<\/span> {<\/span>\r\n            time<\/span>.<\/span>Sleep<\/span>(<\/span>10000<\/span> *<\/span> time<\/span>.<\/span>Millisecond<\/span>)<\/span>\r\n\r\n            timestamp<\/span> :=<\/span> time<\/span>.<\/span>Now<\/span>()<\/span>.<\/span>UnixNano<\/span>()<\/span>\r\n\r\n            send<\/span> :=<\/span> &<\/span>SendMessage<\/span>{<\/span>\r\n                Message<\/span>:<\/span>   \"Hello\"<\/span>,<\/span>\r\n                Timestamp<\/span>:<\/span> timestamp<\/span>,<\/span>\r\n            }<\/span>\r\n\r\n            jsBytes<\/span>,<\/span> err<\/span> :=<\/span> json<\/span>.<\/span>Marshal<\/span>(<\/span>send<\/span>)<\/span>\r\n            if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n                panic<\/span>(<\/span>err<\/span>)<\/span>\r\n            }<\/span>\r\n\r\n            msg<\/span> :=<\/span> &<\/span>sarama<\/span>.<\/span>ProducerMessage<\/span>{<\/span>\r\n                Topic<\/span>:<\/span> \"test.A\"<\/span>,<\/span>\r\n                Key<\/span>:<\/span>   sarama<\/span>.<\/span>StringEncoder<\/span>(<\/span>strconv<\/span>.<\/span>FormatInt<\/span>(<\/span>timestamp<\/span>,<\/span> 10<\/span>)),<\/span>\r\n                Value<\/span>:<\/span> sarama<\/span>.<\/span>StringEncoder<\/span>(<\/span>string<\/span>(<\/span>jsBytes<\/span>)),<\/span>\r\n            }<\/span>\r\n\r\n            producer<\/span>.<\/span>Input<\/span>()<\/span> <-<\/span> msg<\/span>\r\n\r\n            select<\/span> {<\/span>\r\n            case<\/span> <-<\/span>producer<\/span>.<\/span>Successes<\/span>()<\/span>:<\/span>\r\n                fmt<\/span>.<\/span>Println<\/span>(<\/span>fmt<\/span>.<\/span>Sprintf<\/span>(<\/span>\"success send. message: %s, timestamp: %d\"<\/span>,<\/span> send<\/span>.<\/span>Message<\/span>,<\/span> send<\/span>.<\/span>Timestamp<\/span>))<\/span>\r\n            case<\/span> err<\/span> :=<\/span> <-<\/span>producer<\/span>.<\/span>Errors<\/span>()<\/span>:<\/span>\r\n                fmt<\/span>.<\/span>Println<\/span>(<\/span>fmt<\/span>.<\/span>Sprintf<\/span>(<\/span>\"fail send. reason: %v\"<\/span>,<\/span> err<\/span>.<\/span>Msg<\/span>))<\/span>\r\n            case<\/span> <-<\/span>ctx<\/span>.<\/span>Done<\/span>()<\/span>:<\/span>\r\n                break<\/span> PRODUCER_FOR<\/span>\r\n            }<\/span>\r\n        }<\/span>\r\n    }()<\/span>\r\n\r\n    fmt<\/span>.<\/span>Println<\/span>(<\/span>\"go-kafka-example start.\"<\/span>)<\/span>\r\n\r\n    <-<\/span>signals<\/span>\r\n\r\n    fmt<\/span>.<\/span>Println<\/span>(<\/span>\"go-kafka-example stop.\"<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u6bcf10\u79d2\u53d1\u9001\u4e00\u6b21\u5c06”SendMessage”\u8f6c\u6362\u4e3aJSON\u683c\u5f0f\u7684\u6d88\u606f\u3002
\nproducer.Input() <- \u6211\u89c9\u5f97msg\u6709\u70b9\u4e0d\u8212\u670d…\u3002<\/p>\n
\u6d88\u8d39\u8005 zh\u011b)<\/h1>\n
\u63a5\u4e0b\u6765\uff0c\u6211\u5c06\u5199\u4e00\u4e9b\u6d88\u8d39\u8005\u7684\u5185\u5bb9\u3002<\/p>\n
\/\/ Consumer\u90e8\u5206\u306e\u307f\u629c\u7c8b<\/span>\r\n\r\nvar<\/span> (<\/span>\r\n    \/\/ kafka\u306e\u30a2\u30c9\u30ec\u30b9<\/span>\r\n    bootstrapServers<\/span> =<\/span> flag<\/span>.<\/span>String<\/span>(<\/span>\"bootstrapServers\"<\/span>,<\/span> \"localhost:9092\"<\/span>,<\/span> \"kafka address\"<\/span>)<\/span>\r\n)<\/span>\r\n\r\n\/\/ ConsumedMessage \u53d7\u4fe1\u30e1\u30c3\u30bb\u30fc\u30b8<\/span>\r\ntype<\/span> ConsumedMessage<\/span> struct<\/span> {<\/span>\r\n    Message<\/span>   string<\/span> `json:\"message\"`<\/span>\r\n    Timestamp<\/span> int64<\/span>  `json:\"timestamp\"`<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n    flag<\/span>.<\/span>Parse<\/span>()<\/span>\r\n\r\n    if<\/span> *<\/span>bootstrapServers<\/span> ==<\/span> \"\"<\/span> {<\/span>\r\n        flag<\/span>.<\/span>PrintDefaults<\/span>()<\/span>\r\n        os<\/span>.<\/span>Exit<\/span>(<\/span>1<\/span>)<\/span>\r\n    }<\/span>\r\n\r\n    ctx<\/span>,<\/span> cancel<\/span> :=<\/span> context<\/span>.<\/span>WithCancel<\/span>(<\/span>context<\/span>.<\/span>Background<\/span>())<\/span>\r\n    defer<\/span> cancel<\/span>()<\/span>\r\n\r\n    signals<\/span> :=<\/span> make<\/span>(<\/span>chan<\/span> os<\/span>.<\/span>Signal<\/span>,<\/span> 1<\/span>)<\/span>\r\n    signal<\/span>.<\/span>Notify<\/span>(<\/span>signals<\/span>,<\/span> os<\/span>.<\/span>Interrupt<\/span>)<\/span>\r\n\r\n    brokers<\/span> :=<\/span> strings<\/span>.<\/span>Split<\/span>(<\/span>*<\/span>bootstrapServers<\/span>,<\/span> \",\"<\/span>)<\/span>\r\n    config<\/span> :=<\/span> sarama<\/span>.<\/span>NewConfig<\/span>()<\/span>\r\n\r\n    config<\/span>.<\/span>Consumer<\/span>.<\/span>Return<\/span>.<\/span>Errors<\/span> =<\/span> true<\/span>\r\n\r\n    consumer<\/span>,<\/span> err<\/span> :=<\/span> sarama<\/span>.<\/span>NewConsumer<\/span>(<\/span>brokers<\/span>,<\/span> config<\/span>)<\/span>\r\n    if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n        panic<\/span>(<\/span>err<\/span>)<\/span>\r\n    }<\/span>\r\n\r\n    defer<\/span> func<\/span>()<\/span> {<\/span>\r\n        if<\/span> err<\/span> :=<\/span> consumer<\/span>.<\/span>Close<\/span>();<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n            panic<\/span>(<\/span>err<\/span>)<\/span>\r\n        }<\/span>\r\n    }()<\/span>\r\n\r\n    partition<\/span>,<\/span> err<\/span> :=<\/span> consumer<\/span>.<\/span>ConsumePartition<\/span>(<\/span>\"test.A\"<\/span>,<\/span> 0<\/span>,<\/span> sarama<\/span>.<\/span>OffsetNewest<\/span>)<\/span>\r\n    if<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n        panic<\/span>(<\/span>err<\/span>)<\/span>\r\n    }<\/span>\r\n\r\n    \/\/ \u30b3\u30f3\u30b7\u30e5\u30fc\u30de\u30fc\u30eb\u30fc\u30c1\u30f3<\/span>\r\n    go<\/span> func<\/span>()<\/span> {<\/span>\r\n    CONSUMER_FOR<\/span>:<\/span>\r\n        for<\/span> {<\/span>\r\n            select<\/span> {<\/span>\r\n            case<\/span> msg<\/span> :=<\/span> <-<\/span>partition<\/span>.<\/span>Messages<\/span>()<\/span>:<\/span>\r\n                var<\/span> consumed<\/span> ConsumedMessage<\/span>\r\n                if<\/span> err<\/span> :=<\/span> json<\/span>.<\/span>Unmarshal<\/span>(<\/span>msg<\/span>.<\/span>Value<\/span>,<\/span> &<\/span>consumed<\/span>);<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n                    fmt<\/span>.<\/span>Println<\/span>(<\/span>err<\/span>)<\/span>\r\n                }<\/span>\r\n                fmt<\/span>.<\/span>Println<\/span>(<\/span>fmt<\/span>.<\/span>Sprintf<\/span>(<\/span>\"consumed message. message: %s, timestamp: %d\"<\/span>,<\/span> consumed<\/span>.<\/span>Message<\/span>,<\/span> consumed<\/span>.<\/span>Timestamp<\/span>))<\/span>\r\n            case<\/span> <-<\/span>ctx<\/span>.<\/span>Done<\/span>()<\/span>:<\/span>\r\n                break<\/span> CONSUMER_FOR<\/span>\r\n            }<\/span>\r\n        }<\/span>\r\n    }()<\/span>\r\n\r\n    fmt<\/span>.<\/span>Println<\/span>(<\/span>\"go-kafka-example start.\"<\/span>)<\/span>\r\n\r\n    <-<\/span>signals<\/span>\r\n\r\n    fmt<\/span>.<\/span>Println<\/span>(<\/span>\"go-kafka-example stop.\"<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u6d88\u8cbb\u8005\u4f3c\u4e4e\u662f\u4ece”Consumer”\u7ed3\u6784\u4f53\u4e2d\u751f\u6210\u5206\u533a\u7684\u3002\u5b83\u7b49\u5f85\u63a5\u6536\u6d88\u606f\uff0c\u7136\u540e\u5c06\u5176\u4eceJSON\u8f6c\u6362\u4e3a”ConsumedMessage”\u3002<\/p>\n
\u6267\u884c<\/h1>\n
\u6784\u5efa\u5e76\u6267\u884c\u6df7\u6dc6\u4e86\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u7684\u4e1c\u897f\uff08main.go\uff09\uff0c\u5e94\u8be5\u5728\u63a7\u5236\u53f0\u4e0a\u8f93\u51fa\u5982\u4e0b\u5185\u5bb9\uff08\u8fd0\u884c30\u79d2\u540e\u505c\u6b62\uff09\u3002<\/p>\n
go-kafka-example start.\r\nsuccess send. message: Hello, timestamp: 1523932794754645700\r\nconsumed message. message: Hello, timestamp: 1523932794754645700\r\nsuccess send. message: Hello, timestamp: 1523932804761916500\r\nconsumed message. message: Hello, timestamp: 1523932804761916500\r\nsuccess send. message: Hello, timestamp: 1523932814765186700\r\nconsumed message. message: Hello, timestamp: 1523932814765186700\r\ngo-kafka-example stop.\r\n<\/span><\/code><\/pre>\n
\u7ed3\u675f<\/h1>\n
\u751f\u4ea7\u8005\u548c\u6d88\u8d39\u8005\u90fd\u5728goroutine\u7684\u5c01\u95ed\u4e16\u754c\u4e2d\u7f16\u5199\uff0c\u4f46\u5982\u679c\u60f3\u8981\u5c06\u5176\u5bfc\u51fa\u5230\u5916\u90e8\uff0c\u9700\u8981\u5de7\u5999\u5730\u4f7f\u7528\u901a\u9053\u3002\u6b64\u5916\uff0c\u5982\u679c\u60f3\u8981\u5904\u7406\u504f\u79fb\u91cf\u7b49\u95ee\u9898\uff0c\u53ef\u80fd\u9700\u8981\u66f4\u590d\u6742\u7684\u64cd\u4f5c\uff08\u53c2\u8003\uff09\u3002<\/p>\n
\u6dfb\u52a0\u9644\u6ce8<\/h1>\n
\u8fd8\u6709\u4e00\u4e2a\u540d\u4e3aconfluent-kafka-go\u7684confluent\u5e93\u4f5c\u4e3a\u53e6\u4e00\u4e2a\u5ba2\u6237\u7aef\u5e93\u53ef\u4f9b\u9009\u62e9\uff0c\u4f46\u662f\u7531\u4e8e\u9700\u8981\u5b89\u88c5C\u5e93librdkafka\uff0c\u56e0\u6b64\u672c\u6b21\u6ca1\u6709\u5c1d\u8bd5\u3002<\/p>\n
\u6211\u5df2\u7ecf\u8bd5\u8fc7\u4e86\uff0c\u5185\u5bb9\u548csarama\u7248\u672c\u6ca1\u4ec0\u4e48\u5927\u5dee\u522b\uff0c\u6240\u4ee5\u6211\u4e0d\u4f1a\u53d1\u8868\u5e16\u5b50\uff0c\u4f46\u662f\u6211\u4f1a\u653e\u7f6e\u6e90\u4ee3\u7801\u7684\u94fe\u63a5\u3002
\nhttps:\/\/github.com\/lightstaff\/confluent-kafka-go-example<\/p>\n","protected":false},"excerpt":{"rendered":"
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