{"id":43788,"date":"2023-08-09T15:25:07","date_gmt":"2023-07-07T08:09:55","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8-grpc-%e8%bf%9e%e6%8e%a5-kafka\/"},"modified":"2024-04-30T17:46:33","modified_gmt":"2024-04-30T09:46:33","slug":"%e4%bd%bf%e7%94%a8-grpc-%e8%bf%9e%e6%8e%a5-kafka","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8-grpc-%e8%bf%9e%e6%8e%a5-kafka\/","title":{"rendered":"\u4f7f\u7528 gRPC \u8fde\u63a5 Kafka"},"content":{"rendered":"<p>\u5047\u8bbe\u6709\u4e00\u5929\uff0c\u6211\u7a81\u7136\u60f3\u5230\u4e86\u8fd9\u4e2a\u60f3\u6cd5\uff1a<br \/>\n\u300c\u554a\uff0c\u6211\u5bf9\u5361\u592b\u5361\u6709\u70b9\u817b\u4e86\u3002\u8fd8\u662f\u7528 NATS \u5427\u3002\u300d<\/p>\n<p>\u4f46\u662f\uff0c\u5982\u679c\u5176\u4ed6\u56e2\u961f\u8981\u4f7f\u7528Kafka\u7684\u8bdd\uff0c\u6211\u4eec\u5fc5\u987b\u8981\u6c42\u4ed6\u4eec\u8fdb\u884c\u4fee\u6539\u3002<br \/>\n\u4ed6\u4eec\u53ef\u80fd\u5f88\u5fd9\u3002\u8fd9\u6837\u5c31\u4e0d\u5bb9\u6613\u6362\u6210NATS\u4e86\u3002<\/p>\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u901a\u8fc7\u62bd\u8c61\u5316\u7684\u6d88\u606f\u7cfb\u7edf\u63a5\u53e3\u8ba9\u5176\u4ee3\u66ff\u76f4\u63a5\u8bbf\u95eeKafka\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u9690\u85cf\u5185\u90e8\u5b9e\u73b0\u3002<\/p>\n<p>\u8fd9\u6b21\u4ecb\u7ecd\u7684\u662f\u6211\u4eec\u516c\u53f8\u81ea\u5bb6\u5236\u4f5c\u7684 uw-labs\/proximo \u5e93\uff08\u4ee5\u53caGo\u670d\u52a1\u5668\u7684\u5b9e\u73b0\uff09\u3002<br \/>\n\u5728\u8fd9\u4e2a\u5e93\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528protocol buffer\u5b9a\u4e49\u4e86\u6d88\u606f\u4f20\u9012\u7cfb\u7edf\u7684\u63a5\u53e3\u3002<\/p>\n<ul class=\"post-ul\">https:\/\/github.com\/uw-labs\/proximo\/blob\/master\/proto\/proximo.proto<\/ul>\n<pre class=\"post-pre\"><code><span class=\"na\">syntax<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"proto3\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"kn\">package<\/span> <span class=\"nn\">proximo<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"kd\">message<\/span> <span class=\"nc\">Message<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kt\">bytes<\/span> <span class=\"na\">data<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"kt\">string<\/span> <span class=\"na\">id<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c1\">\/\/ Consumer types<\/span>\r\n<span class=\"kd\">service<\/span> <span class=\"n\">MessageSource<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">rpc<\/span> <span class=\"n\">Consume<\/span><span class=\"p\">(<\/span><span class=\"n\">stream<\/span> <span class=\"n\">ConsumerRequest<\/span><span class=\"p\">)<\/span> <span class=\"k\">returns<\/span> <span class=\"p\">(<\/span><span class=\"n\">stream<\/span> <span class=\"n\">Message<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"kd\">message<\/span> <span class=\"nc\">ConsumerRequest<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"c1\">\/\/ expected if this is a start request<\/span>\r\n  <span class=\"n\">StartConsumeRequest<\/span> <span class=\"na\">startRequest<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"c1\">\/\/ expected if this is a confirmation<\/span>\r\n  <span class=\"n\">Confirmation<\/span> <span class=\"na\">confirmation<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">3<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"kd\">message<\/span> <span class=\"nc\">StartConsumeRequest<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kt\">string<\/span> <span class=\"na\">topic<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"kt\">string<\/span> <span class=\"na\">consumer<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"n\">Offset<\/span> <span class=\"na\">initial_offset<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">3<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"kd\">enum<\/span> <span class=\"n\">Offset<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"na\">OFFSET_DEFAULT<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"na\">OFFSET_NEWEST<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"na\">OFFSET_OLDEST<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"kd\">message<\/span> <span class=\"nc\">Confirmation<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kt\">string<\/span> <span class=\"na\">msgID<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c1\">\/\/ Producer types<\/span>\r\n<span class=\"kd\">service<\/span> <span class=\"n\">MessageSink<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">rpc<\/span> <span class=\"n\">Publish<\/span><span class=\"p\">(<\/span><span class=\"n\">stream<\/span> <span class=\"n\">PublisherRequest<\/span><span class=\"p\">)<\/span> <span class=\"k\">returns<\/span> <span class=\"p\">(<\/span><span class=\"n\">stream<\/span> <span class=\"n\">Confirmation<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"kd\">message<\/span> <span class=\"nc\">PublisherRequest<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"c1\">\/\/ expected if this is a start request<\/span>\r\n  <span class=\"n\">StartPublishRequest<\/span> <span class=\"na\">startRequest<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n  <span class=\"c1\">\/\/ expected if this is a message<\/span>\r\n  <span class=\"n\">Message<\/span> <span class=\"na\">msg<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">3<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"kd\">message<\/span> <span class=\"nc\">StartPublishRequest<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kt\">string<\/span> <span class=\"na\">topic<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8bf7\u6ce8\u610f\uff0c\u6211\u4eec\u4f7f\u7528\u53cc\u5411\u6d41\u7684RPC\u8fdb\u884c\u53d1\u9001\u548c\u63a5\u6536\u3002<br \/>\n\u901a\u8fc7\u51c6\u5907\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684gRPC\u670d\u52a1\u5668\uff0c\u6211\u4eec\u53ef\u4ee5\u9690\u85cf\u7528\u6237\u5bf9\u4f7f\u7528Kafka\u7684\u4e8b\u5b9e\u3002<br \/>\n\u7531\u4e8e\u5b58\u50a8\u5e93\u4e2d\u63d0\u4f9b\u4e86\u4f7f\u7528Go\u8fdb\u884c\u670d\u52a1\u5668\u5b9e\u73b0\u548c\u516c\u5171Docker\u6620\u50cf\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u5b83\u3002<\/p>\n<h2>Proximo\u7684\u90e8\u7f72\u3002<\/h2>\n<p>\u4f7f\u7528\u4ee5\u4e0b\u7684\u6e05\u5355\u6587\u4ef6\u6765\u90e8\u7f72\u5c06Kafka\u4f5c\u4e3a\u540e\u7aef\u4f7f\u7528\u7684proximo\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nn\">---<\/span>\r\n<span class=\"na\">apiVersion<\/span><span class=\"pi\">:<\/span> <span class=\"s\">v1<\/span>\r\n<span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Service<\/span>\r\n<span class=\"na\">metadata<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">annotations<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"s\">prometheus.io\/scrape<\/span><span class=\"pi\">:<\/span> <span class=\"s1\">'<\/span><span class=\"s\">true'<\/span>\r\n    <span class=\"s\">prometheus.io\/path<\/span><span class=\"pi\">:<\/span>   <span class=\"s\">\/__\/metrics<\/span>\r\n    <span class=\"s\">prometheus.io\/port<\/span><span class=\"pi\">:<\/span>   <span class=\"s1\">'<\/span><span class=\"s\">8080'<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"nl\">&amp;app<\/span> <span class=\"s\">proximo<\/span>\r\n  <span class=\"na\">namespace<\/span><span class=\"pi\">:<\/span> <span class=\"nl\">&amp;ns<\/span> <span class=\"s\">qiita<\/span>\r\n  <span class=\"na\">labels<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">app<\/span><span class=\"pi\">:<\/span> <span class=\"nv\">*app<\/span>\r\n<span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">ports<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">app<\/span>\r\n      <span class=\"na\">port<\/span><span class=\"pi\">:<\/span> <span class=\"m\">6868<\/span>\r\n      <span class=\"na\">protocol<\/span><span class=\"pi\">:<\/span> <span class=\"s\">TCP<\/span>\r\n      <span class=\"na\">targetPort<\/span><span class=\"pi\">:<\/span> <span class=\"m\">6868<\/span>\r\n    <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">http<\/span>\r\n      <span class=\"na\">port<\/span><span class=\"pi\">:<\/span> <span class=\"m\">80<\/span>\r\n      <span class=\"na\">protocol<\/span><span class=\"pi\">:<\/span> <span class=\"s\">TCP<\/span>\r\n      <span class=\"na\">targetPort<\/span><span class=\"pi\">:<\/span> <span class=\"m\">8080<\/span>\r\n  <span class=\"na\">selector<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">app<\/span><span class=\"pi\">:<\/span> <span class=\"nv\">*app<\/span>\r\n<span class=\"nn\">---<\/span>\r\n<span class=\"na\">apiVersion<\/span><span class=\"pi\">:<\/span> <span class=\"s\">apps\/v1<\/span>\r\n<span class=\"na\">kind<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Deployment<\/span>\r\n<span class=\"na\">metadata<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">labels<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">app<\/span><span class=\"pi\">:<\/span> <span class=\"nl\">&amp;app<\/span> <span class=\"s\">proximo<\/span>\r\n  <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"nv\">*app<\/span>\r\n  <span class=\"na\">namespace<\/span><span class=\"pi\">:<\/span> <span class=\"nl\">&amp;ns<\/span> <span class=\"s\">qiita<\/span>\r\n<span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n  <span class=\"na\">replicas<\/span><span class=\"pi\">:<\/span> <span class=\"m\">1<\/span>\r\n  <span class=\"na\">selector<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">matchLabels<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"na\">app<\/span><span class=\"pi\">:<\/span> <span class=\"nv\">*app<\/span>\r\n  <span class=\"na\">template<\/span><span class=\"pi\">:<\/span>\r\n    <span class=\"na\">metadata<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"na\">labels<\/span><span class=\"pi\">:<\/span>\r\n        <span class=\"na\">app<\/span><span class=\"pi\">:<\/span> <span class=\"nv\">*app<\/span>\r\n      <span class=\"na\">namespace<\/span><span class=\"pi\">:<\/span> <span class=\"nv\">*ns<\/span>\r\n    <span class=\"na\">spec<\/span><span class=\"pi\">:<\/span>\r\n      <span class=\"na\">containers<\/span><span class=\"pi\">:<\/span>\r\n        <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"nv\">*app<\/span>\r\n          <span class=\"na\">image<\/span><span class=\"pi\">:<\/span> <span class=\"s\">quay.io\/utilitywarehouse\/proximo:latest<\/span>\r\n          <span class=\"na\">args<\/span><span class=\"pi\">:<\/span>\r\n            <span class=\"pi\">-<\/span> <span class=\"s\">\/proximo-server<\/span>\r\n            <span class=\"pi\">-<\/span> <span class=\"s\">kafka<\/span>\r\n          <span class=\"na\">env<\/span><span class=\"pi\">:<\/span>\r\n            <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">PROXIMO_KAFKA_VERSION<\/span>\r\n              <span class=\"na\">valueFrom<\/span><span class=\"pi\">:<\/span>\r\n                <span class=\"na\">configMapKeyRef<\/span><span class=\"pi\">:<\/span>\r\n                  <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">kafka-brokers<\/span>\r\n                  <span class=\"na\">key<\/span><span class=\"pi\">:<\/span> <span class=\"s\">internal.kafka.broker.version<\/span>\r\n            <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">PROXIMO_KAFKA_BROKERS<\/span>\r\n              <span class=\"na\">valueFrom<\/span><span class=\"pi\">:<\/span>\r\n                <span class=\"na\">configMapKeyRef<\/span><span class=\"pi\">:<\/span>\r\n                  <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">kafka-brokers<\/span>\r\n                  <span class=\"na\">key<\/span><span class=\"pi\">:<\/span> <span class=\"s\">internal.kafka.brokers<\/span>\r\n            <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">PROXIMO_PROBE_PORT<\/span>\r\n              <span class=\"na\">value<\/span><span class=\"pi\">:<\/span> <span class=\"s2\">\"<\/span><span class=\"s\">8080\"<\/span>\r\n            <span class=\"pi\">-<\/span> <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">PROXIMO_PORT<\/span>\r\n              <span class=\"na\">value<\/span><span class=\"pi\">:<\/span> <span class=\"s2\">\"<\/span><span class=\"s\">6868\"<\/span>\r\n          <span class=\"na\">imagePullPolicy<\/span><span class=\"pi\">:<\/span> <span class=\"s\">Always<\/span>\r\n          <span class=\"na\">livenessProbe<\/span><span class=\"pi\">:<\/span>\r\n            <span class=\"na\">failureThreshold<\/span><span class=\"pi\">:<\/span> <span class=\"m\">3<\/span>\r\n            <span class=\"na\">httpGet<\/span><span class=\"pi\">:<\/span>\r\n              <span class=\"na\">path<\/span><span class=\"pi\">:<\/span> <span class=\"s\">\/__\/ready<\/span>\r\n              <span class=\"na\">port<\/span><span class=\"pi\">:<\/span> <span class=\"m\">8080<\/span>\r\n              <span class=\"na\">scheme<\/span><span class=\"pi\">:<\/span> <span class=\"s\">HTTP<\/span>\r\n            <span class=\"na\">initialDelaySeconds<\/span><span class=\"pi\">:<\/span> <span class=\"m\">15<\/span>\r\n            <span class=\"na\">periodSeconds<\/span><span class=\"pi\">:<\/span> <span class=\"m\">10<\/span>\r\n            <span class=\"na\">successThreshold<\/span><span class=\"pi\">:<\/span> <span class=\"m\">1<\/span>\r\n            <span class=\"na\">timeoutSeconds<\/span><span class=\"pi\">:<\/span> <span class=\"m\">10<\/span>\r\n          <span class=\"na\">ports<\/span><span class=\"pi\">:<\/span>\r\n            <span class=\"pi\">-<\/span> <span class=\"na\">containerPort<\/span><span class=\"pi\">:<\/span> <span class=\"m\">6868<\/span>\r\n              <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">proximo<\/span>\r\n              <span class=\"na\">protocol<\/span><span class=\"pi\">:<\/span> <span class=\"s\">TCP<\/span>\r\n            <span class=\"pi\">-<\/span> <span class=\"na\">containerPort<\/span><span class=\"pi\">:<\/span> <span class=\"m\">8080<\/span>\r\n              <span class=\"na\">name<\/span><span class=\"pi\">:<\/span> <span class=\"s\">proximo-probe<\/span>\r\n              <span class=\"na\">protocol<\/span><span class=\"pi\">:<\/span> <span class=\"s\">TCP<\/span>\r\n          <span class=\"na\">readinessProbe<\/span><span class=\"pi\">:<\/span>\r\n            <span class=\"na\">failureThreshold<\/span><span class=\"pi\">:<\/span> <span class=\"m\">3<\/span>\r\n            <span class=\"na\">httpGet<\/span><span class=\"pi\">:<\/span>\r\n              <span class=\"na\">path<\/span><span class=\"pi\">:<\/span> <span class=\"s\">\/__\/ready<\/span>\r\n              <span class=\"na\">port<\/span><span class=\"pi\">:<\/span> <span class=\"m\">8080<\/span>\r\n              <span class=\"na\">scheme<\/span><span class=\"pi\">:<\/span> <span class=\"s\">HTTP<\/span>\r\n            <span class=\"na\">initialDelaySeconds<\/span><span class=\"pi\">:<\/span> <span class=\"m\">15<\/span>\r\n            <span class=\"na\">periodSeconds<\/span><span class=\"pi\">:<\/span> <span class=\"m\">10<\/span>\r\n            <span class=\"na\">successThreshold<\/span><span class=\"pi\">:<\/span> <span class=\"m\">1<\/span>\r\n            <span class=\"na\">timeoutSeconds<\/span><span class=\"pi\">:<\/span> <span class=\"m\">10<\/span>\r\n          <span class=\"na\">resources<\/span><span class=\"pi\">:<\/span>\r\n            <span class=\"na\">limits<\/span><span class=\"pi\">:<\/span>\r\n              <span class=\"na\">memory<\/span><span class=\"pi\">:<\/span> <span class=\"s\">512Mi<\/span>\r\n<span class=\"nn\">---<\/span>\r\n<\/code><\/pre>\n<p>\u6839\u636e\u8fd9\u4efd\u6e05\u5355\u8fdb\u884c\u90e8\u7f72\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>kubectl apply <span class=\"nt\">-f<\/span> kubernetes\/proximo.yaml\r\nservice\/proximo created\r\ndeployment.apps\/proximo created\r\n\r\n<span class=\"nv\">$ <\/span>kubectl <span class=\"nt\">-n<\/span> qiita get pods proximo-684b45f898-9vvvr\r\nNAME                       READY   STATUS    RESTARTS   AGE\r\nproximo-684b45f898-9vvvr   1\/1     Running   0          36s\r\n<\/code><\/pre>\n<h2>\u901a\u8fc7Proximo\u63a5\u6536\u7684\u6d88\u606f\u3002<\/h2>\n<p>\u4f5c\u4e3a\u7528\u4f8b\uff0c\u6211\u4eec\u9884\u8ba1\u4ece\u4e0d\u540c\u7684\u547d\u540d\u7a7a\u95f4\u4e2d\u4f7f\u7528\uff0c\u4f46\u8fd9\u4e00\u6b21\u6211\u4eec\u60f3\u8981\u5c06\u63a5\u6536\u5728\u5e94\u7528\u7a0b\u5e8f\u5185\u90e8\u4e0a\u6b21\u5b9e\u65bd\u7684\u6539\u4e3a\u4f7f\u7528Proximo\u3002<\/p>\n<p>\u5173\u4e8e\u5982\u4f55\u8bbf\u95eeProximo\uff0csubstrate\u5e93\u5728\u8fd9\u91cc\u4e5f\u5f88\u6709\u7528\u3002<br \/>\n\u4f7f\u7528substrate\/proximo\u5305\uff0c\u6211\u4eec\u5b9a\u4e49initializeProximoSource()\u51fd\u6570\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">func<\/span> <span class=\"n\">initialiseProximoSource<\/span><span class=\"p\">(<\/span><span class=\"n\">addr<\/span><span class=\"p\">,<\/span> <span class=\"n\">consumerID<\/span><span class=\"p\">,<\/span> <span class=\"n\">topic<\/span> <span class=\"o\">*<\/span><span class=\"kt\">string<\/span><span class=\"p\">,<\/span> <span class=\"n\">offsetOldest<\/span> <span class=\"o\">*<\/span><span class=\"kt\">bool<\/span><span class=\"p\">)<\/span> <span class=\"p\">(<\/span><span class=\"n\">substrate<\/span><span class=\"o\">.<\/span><span class=\"n\">SynchronousMessageSource<\/span><span class=\"p\">,<\/span> <span class=\"kt\">error<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">var<\/span> <span class=\"n\">proximoOffset<\/span> <span class=\"n\">proximo<\/span><span class=\"o\">.<\/span><span class=\"n\">Offset<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"o\">*<\/span><span class=\"n\">offsetOldest<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">proximoOffset<\/span> <span class=\"o\">=<\/span> <span class=\"n\">proximo<\/span><span class=\"o\">.<\/span><span class=\"n\">OffsetOldest<\/span>\r\n    <span class=\"p\">}<\/span> <span class=\"k\">else<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">proximoOffset<\/span> <span class=\"o\">=<\/span> <span class=\"n\">proximo<\/span><span class=\"o\">.<\/span><span class=\"n\">OffsetNewest<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"n\">source<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">proximo<\/span><span class=\"o\">.<\/span><span class=\"n\">NewAsyncMessageSource<\/span><span class=\"p\">(<\/span><span class=\"n\">proximo<\/span><span class=\"o\">.<\/span><span class=\"n\">AsyncMessageSourceConfig<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"n\">ConsumerGroup<\/span><span class=\"o\">:<\/span> <span class=\"o\">*<\/span><span class=\"n\">consumerID<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"n\">Topic<\/span><span class=\"o\">:<\/span>         <span class=\"o\">*<\/span><span class=\"n\">topic<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"n\">Broker<\/span><span class=\"o\">:<\/span>        <span class=\"o\">*<\/span><span class=\"n\">addr<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"n\">Offset<\/span><span class=\"o\">:<\/span>        <span class=\"n\">proximoOffset<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"n\">Insecure<\/span><span class=\"o\">:<\/span>      <span class=\"no\">true<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"p\">})<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"no\">nil<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"n\">substrate<\/span><span class=\"o\">.<\/span><span class=\"n\">NewSynchronousMessageSource<\/span><span class=\"p\">(<\/span><span class=\"n\">source<\/span><span class=\"p\">),<\/span> <span class=\"no\">nil<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u547c\u53eb\u65b9\u9700\u8981\u8fdb\u884c\u5982\u4e0b\u66f4\u6539\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">proximoAddr<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">app<\/span><span class=\"o\">.<\/span><span class=\"n\">String<\/span><span class=\"p\">(<\/span><span class=\"n\">cli<\/span><span class=\"o\">.<\/span><span class=\"n\">StringOpt<\/span><span class=\"p\">{<\/span>\r\n    <span class=\"n\">Desc<\/span><span class=\"o\">:<\/span>   <span class=\"s\">\"proximo endpoint\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">Name<\/span><span class=\"o\">:<\/span>   <span class=\"s\">\"proximo-addr\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">EnvVar<\/span><span class=\"o\">:<\/span> <span class=\"s\">\"PROXIMO_ADDR\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">Value<\/span><span class=\"o\">:<\/span>  <span class=\"s\">\"proximo:6868\"<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">})<\/span>\r\n<span class=\"n\">proximoOffsetOldest<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">app<\/span><span class=\"o\">.<\/span><span class=\"n\">Bool<\/span><span class=\"p\">(<\/span><span class=\"n\">cli<\/span><span class=\"o\">.<\/span><span class=\"n\">BoolOpt<\/span><span class=\"p\">{<\/span>\r\n    <span class=\"n\">Name<\/span><span class=\"o\">:<\/span>   <span class=\"s\">\"proximo-offset-oldest\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">Desc<\/span><span class=\"o\">:<\/span>   <span class=\"s\">\"If set to true, will start consuming from the oldest available messages\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">EnvVar<\/span><span class=\"o\">:<\/span> <span class=\"s\">\"PROXIMO_OFFSET_OLDEST\"<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">Value<\/span><span class=\"o\">:<\/span>  <span class=\"no\">true<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">})<\/span>\r\n\r\n<span class=\"o\">...<\/span>\r\n\r\n<span class=\"n\">actionSource<\/span><span class=\"p\">,<\/span> <span class=\"n\">err<\/span> <span class=\"o\">:=<\/span> <span class=\"n\">initialiseProximoSource<\/span><span class=\"p\">(<\/span><span class=\"n\">proximoAddr<\/span><span class=\"p\">,<\/span> <span class=\"n\">consumerID<\/span><span class=\"p\">,<\/span> <span class=\"n\">actionTopic<\/span><span class=\"p\">,<\/span> <span class=\"n\">proximoOffsetOldest<\/span><span class=\"p\">)<\/span>\r\n<span class=\"k\">if<\/span> <span class=\"n\">err<\/span> <span class=\"o\">!=<\/span> <span class=\"no\">nil<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">log<\/span><span class=\"o\">.<\/span><span class=\"n\">WithError<\/span><span class=\"p\">(<\/span><span class=\"n\">err<\/span><span class=\"p\">)<\/span><span class=\"o\">.<\/span><span class=\"n\">Fatalln<\/span><span class=\"p\">(<\/span><span class=\"s\">\"init action event kafka source\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"k\">defer<\/span> <span class=\"n\">actionSource<\/span><span class=\"o\">.<\/span><span class=\"n\">Close<\/span><span class=\"p\">()<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u7684\u90e8\u5206\u4e2d\uff0c\u6ca1\u6709\u5305\u542b\u5bf9 Kafka \u7684\u4f9d\u8d56\uff0c\u56e0\u6b64\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u540e\u7aef\u7cfb\u7edf\u800c\u4e0d\u9700\u8981\u62c5\u5fc3\u662f\u4ec0\u4e48\u3002<br \/>\n\u90e8\u7f72\u540e\uff0c\u6211\u4eec\u6765\u8fdb\u884c\u8c03\u8bd5\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d54cb37434c4406cd3f4d\/19-0.png\" alt=\"Screenshot 2019-12-17 at 14.54.05.png\" \/><\/div>\n<p>gRPC\u6210\u529f\u4e86\uff0c\u5e76\u8fd4\u56de\u4e86\u65b0\u7684Todo ID\u3002<br \/>\n\u73b0\u5728\u6211\u4eec\u6765\u67e5\u770b\u6570\u636e\u5e93\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>kubectl <span class=\"nt\">-n<\/span> qiita <span class=\"nb\">exec<\/span> <span class=\"nt\">-ti<\/span> cockroachdb-0 <span class=\"nt\">--<\/span> \/cockroach\/cockroach sql <span class=\"nt\">--url<\/span> postgresql:\/\/root@localhost:26257\/qiita_advent_calendar_2019_db?sslmode<span class=\"o\">=<\/span>disable\r\n...\r\nroot@localhost:26257\/qiita_advent_calendar_2019_db&gt; <span class=\"k\">select<\/span> <span class=\"k\">*<\/span> from todo where <span class=\"nb\">id<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'71face5d-404e-4cf3-b831-dd33da5147a2'<\/span><span class=\"p\">;<\/span>\r\n                   <span class=\"nb\">id<\/span>                  |   title   |                  description                   \r\n+--------------------------------------+-----------+-----------------------------------------------+\r\n  71face5d-404e-4cf3-b831-dd33da5147a2 | Holidays! | Pack your items and prepare <span class=\"k\">for <\/span>the holidays!  \r\n<span class=\"o\">(<\/span>1 row<span class=\"o\">)<\/span>\r\n\r\nTime: 1.328365ms\r\n<\/code><\/pre>\n<p>\u6211\u5df2\u7ecf\u6210\u529f\u5730\u5c06\u6570\u636e\u4fdd\u5b58\u5230\u4e86\u6570\u636e\u5e93\u4e2d\u3002:)<\/p>\n<hr \/>\n<p>\u56e0\u6b64\uff0c\u6211\u5011\u5df2\u7d93\u5f9e\u555f\u52d5\u5fae\u670d\u52d9\uff0c\u5230\u4f7f\u7528gRPC\u3001DB\uff0c\u518d\u5230\u4f7f\u7528Kafka\u9032\u884c\u975e\u540c\u6b65\u901a\u4fe1\uff0c\u8b1b\u8ff0\u4e86\u5230\u9019\u88e1\u3002<br \/>\n\u5118\u7ba1\u9084\u6709\u4e00\u4e9b\u65e5\u5b50\u5269\u4e0b\uff0c\u4f46\u6211\u5011\u5df2\u7d93\u4ecb\u7d39\u5b8c\u60f3\u8981\u8b1b\u7684\u5167\u5bb9\uff0c\u6240\u4ee5\u6211\u5011\u5c07\u5728\u9019\u88e1\u5148\u7d50\u675f\u4e3b\u8981\u5167\u5bb9\u3002<\/p>\n<p>\u7531\u4e8e\u8fd8\u6709\u4e00\u4e9b\u5176\u4ed6\u8bdd\u9898\u6211\u60f3\u63d0\u53ca\uff0c\u6240\u4ee5\u6211\u6253\u7b97\u4ee5\u6211\u7684\u8282\u594f\u6765\u66f4\u65b0\u3002\u975e\u5e38\u611f\u8c22\u60a8\u9605\u8bfb\u5230\u8fd9\u91cc \ud83d\ude42<\/p>\n<p>\u795d\u5927\u5bb6\u5723\u8bde\u5feb\u4e50\u5e76\u5ea6\u8fc7\u4e00\u4e2a\u7f8e\u597d\u7684\u65b0\u5e74\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5047\u8bbe\u6709\u4e00\u5929\uff0c\u6211\u7a81\u7136\u60f3\u5230\u4e86\u8fd9\u4e2a\u60f3\u6cd5\uff1a \u300c\u554a\uff0c\u6211\u5bf9\u5361\u592b\u5361\u6709\u70b9\u817b\u4e86\u3002\u8fd8\u662f\u7528 NATS \u5427\u3002\u300d \u4f46\u662f\uff0c\u5982\u679c\u5176\u4ed6\u56e2\u961f\u8981\u4f7f [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-43788","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u4f7f\u7528 gRPC \u8fde\u63a5 Kafka - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528-grpc-\u8fde\u63a5-kafka\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528 gRPC \u8fde\u63a5 Kafka\" \/>\n<meta property=\"og:description\" content=\"\u5047\u8bbe\u6709\u4e00\u5929\uff0c\u6211\u7a81\u7136\u60f3\u5230\u4e86\u8fd9\u4e2a\u60f3\u6cd5\uff1a \u300c\u554a\uff0c\u6211\u5bf9\u5361\u592b\u5361\u6709\u70b9\u817b\u4e86\u3002\u8fd8\u662f\u7528 NATS \u5427\u3002\u300d \u4f46\u662f\uff0c\u5982\u679c\u5176\u4ed6\u56e2\u961f\u8981\u4f7f [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528-grpc-\u8fde\u63a5-kafka\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-07T08:09:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-30T09:46:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d54cb37434c4406cd3f4d\/19-0.png\" \/>\n<meta name=\"author\" content=\"\u79d1, \u96c5\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u79d1, \u96c5\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8-grpc-%e8%bf%9e%e6%8e%a5-kafka\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8-grpc-%e8%bf%9e%e6%8e%a5-kafka\/\",\"name\":\"\u4f7f\u7528 gRPC \u8fde\u63a5 Kafka - Blog - Silicon 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