{"id":207962,"date":"2025-07-08T08:30:51","date_gmt":"2025-07-08T00:30:51","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207962\/"},"modified":"2025-07-08T08:30:51","modified_gmt":"2025-07-08T00:30:51","slug":"%e5%a6%82%e4%bd%95%e5%af%b9-pubsub-%e6%8e%a5%e6%94%b6%e5%9b%9e%e8%b0%83%e8%bf%9b%e8%a1%8c%e5%8d%95%e5%85%83%e6%b5%8b%e8%af%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207962\/","title":{"rendered":"\u5982\u4f55\u5bf9 pubsub \u63a5\u6536\u56de\u8c03\u8fdb\u884c\u5355\u5143\u6d4b\u8bd5"},"content":{"rendered":"<p><b><\/b> <\/p>\n<p>\u5f53\u524d\u4f4d\u7f6e\uff1a <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>&gt;<\/span> <span>\u5982\u4f55\u5bf9 pubsub \u63a5\u6536\u56de\u8c03\u8fdb\u884c\u5355\u5143\u6d4b\u8bd5<\/span><\/p>\n<p><span>\u6765\u6e90\uff1astackoverflow<\/span><br \/>\n<span>2024-04-27 13:06:30<\/span><br \/>\n<span><i><\/i>0\u6d4f\u89c8<\/span><br \/>\n<span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2aGolang\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300a\u5982\u4f55\u5bf9 pubsub \u63a5\u6536\u56de\u8c03\u8fdb\u884c\u5355\u5143\u6d4b\u8bd5\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01<\/p>\n<p> \u95ee\u9898\u5185\u5bb9<br \/>\n <\/p>\n<p>\u6211\u6709\u4ee5\u4e0b\u751f\u4ea7\u4ee3\u7801\uff1a<\/p>\n<pre>func pullMessages(ctx context.Context, sub *pubsub.Subscription) {\n    err := sub.Receive(ctx, func(ctx context.Context, msg *pubsub.Message) {\n        log.Printf(\"Got message: %q\\n\", string(msg.Data))\n        processMessage(msg)\n        msg.Ack()\n    })\n    if err != nil {\n        log.Printf(\"Receive: %v\", err)\n    }\n}<\/pre>\n<p>\u5982\u4f55\u9a8c\u8bc1 <code>processmessage<\/code> \u5b9e\u9645\u4e0a\u5728\u5355\u5143\u6d4b\u8bd5\u4e2d\u88ab\u8c03\u7528\uff1f<\/p>\n<p> <\/p>\n<h2>\u89e3\u51b3\u65b9\u6848<\/h2>\n<p> <\/p>\n<p>\u975e\u5e38\u7b80\u5355\uff1a\u5c06\u56de\u8c03\u8bbe\u4e3a\u547d\u540d\u51fd\u6570\u800c\u4e0d\u662f\u533f\u540d\u51fd\u6570\uff1a<\/p>\n<pre>func pullMessages(ctx context.Context, sub *pubsub.Subscription) {\n    if err := sub.Receive(ctx, rcvCallback); err != nil {\n        log.Printf(\"Receiving message: %s\",err)\n    }\n}\n\nfunc rcvCallback (ctx context.Context, msg *pubsub.Message) {\n        log.Printf(\"Got message: %q\\n\", string(msg.Data))\n        processMessage(msg)\n        msg.Ack()\n}\n<\/pre>\n<p>\u73b0\u5728\uff0c\u5728\u5355\u5143\u6d4b\u8bd5\u4e2d\uff0c\u60a8\u53ef\u4ee5\u521b\u5efa <code>context<\/code> \u548c <code>message<\/code> \u7684\u5b9e\u4f8b\u5e76\u5c06\u5176\u4f20\u9012\u7ed9\u60a8\u7684\u51fd\u6570\u3002\u7136\u800c\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u8fd9\u51e0\u4e4e\u6ca1\u6709\u610f\u4e49\u3002\u60a8\u53ea\u9700\u8bb0\u5f55\u548c\u786e\u8ba4\u6d88\u606f\u4ee5\u53ca\u5e94\u7531\u4e0a\u6e38\u9879\u76ee\u8fdb\u884c\u5355\u5143\u6d4b\u8bd5\u7684\u529f\u80fd\u5373\u53ef\u3002\u56e0\u6b64\uff0c\u6784\u5efa\u6d88\u606f\u5b9e\u4f8b\u548c\u5355\u5143\u6d4b\u8bd5 <code>processmessage<\/code> \u66f4\u6709\u610f\u4e49\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u5982\u4f55\u5bf9 pubsub \u63a5\u6536\u56de\u8c03\u8fdb\u884c\u5355\u5143\u6d4b\u8bd5\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591aGolang\u77e5\u8bc6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u524d\u4f4d\u7f6e\uff1a &gt; &gt; &#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-207962","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207962","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=207962"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207962\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207962"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207962"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207962"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}