{"id":208265,"date":"2025-07-08T14:45:23","date_gmt":"2025-07-08T06:45:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/208265\/"},"modified":"2025-07-08T14:45:23","modified_gmt":"2025-07-08T06:45:23","slug":"%e4%bd%bf%e7%94%a8%e6%8c%87%e9%92%88%e6%8e%a5%e6%94%b6%e5%99%a8%e6%96%b9%e6%b3%95%e5%88%9b%e5%bb%ba%e5%8c%85%e8%a3%85%e7%8e%b0%e6%9c%89%e7%b1%bb%e5%9e%8b%e7%9a%84%e6%8e%a5%e5%8f%a3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208265\/","title":{"rendered":"\u4f7f\u7528\u6307\u9488\u63a5\u6536\u5668\u65b9\u6cd5\u521b\u5efa\u5305\u88c5\u73b0\u6709\u7c7b\u578b\u7684\u63a5\u53e3"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u4f7f\u7528\u6307\u9488\u63a5\u6536\u5668\u65b9\u6cd5\u521b\u5efa\u5305\u88c5\u73b0\u6709\u7c7b\u578b\u7684\u63a5\u53e3<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-30 22:45:35<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4eca\u5929\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u4f7f\u7528\u6307\u9488\u63a5\u6536\u5668\u65b9\u6cd5\u521b\u5efa\u5305\u88c5\u73b0\u6709\u7c7b\u578b\u7684\u63a5\u53e3\u300b<\/span>\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u662f\u6b63\u5728\u5b66\u4e60Golang<\/span>\u6216\u8005\u5df2\u7ecf\u662f\u5927\u4f6c\u7ea7\u522b\u4e86\uff0c\u90fd\u975e\u5e38\u6b22\u8fce\u4e5f\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u7ed9\u6211\u5efa\u8bae\u8bc4\u8bba\u54c8~\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff01<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u9700\u8981\u6d4b\u8bd5\u4e00\u4e2a\u4f7f\u7528 google cloud pubsub \u7684\u5e94\u7528\uff0c\u56e0\u6b64\u5fc5\u987b\u5305\u88c5\u5176\u7c7b\u578b pubsub.client<\/code> \u548c pubsub.subscriber<\/code> \u4ee5\u4fbf\u8fdb\u884c\u6d4b\u8bd5\u3002\u7136\u800c\uff0c\u5c3d\u7ba1\u8fdb\u884c\u4e86\u591a\u6b21\u5c1d\u8bd5\uff0c\u6211\u8fd8\u662f\u65e0\u6cd5\u83b7\u5f97\u53ef\u7f16\u8bd1\u7684\u63a5\u53e3\u3002<\/p>\n

\u6211\u5c1d\u8bd5\u5305\u88c5\u7684\u65b9\u6cd5\u7684\u5b9a\u4e49\u662f\uff1a<\/p>\n

func (s *subscription) receive(\n    ctx context.context, f func(context.context, *message)) error\n\nfunc (c *client) subscription(id string) *subscription<\/pre>\n
\u8fd9\u662f\u5f53\u524d\u7684\u4ee3\u7801\u3002 receiver<\/code> \u63a5\u53e3\uff08subscriber<\/code> \u7684\u5305\u88c5\uff09\u4f3c\u4e4e\u53ef\u4ee5\u5de5\u4f5c\uff0c\u4f46\u6211\u6000\u7591\u5b83\u53ef\u80fd\u9700\u8981\u66f4\u6539\u624d\u80fd\u4fee\u590d subscriptionmaker<\/code>\uff0c\u56e0\u6b64\u6211\u5c06\u4e24\u8005\u90fd\u5305\u542b\u5728\u5185\u3002<\/p>\n
\u6ce8\u610f\uff1a\u6211\u5df2\u7ecf\u5c1d\u8bd5\u4e86\u51e0\u79cd\u5f15\u7528\u548c\u53d6\u6d88\u5f15\u7528\u6307\u9488\u7684\u53d8\u4f53\uff0c\u6240\u4ee5\u8bf7\u4e0d\u8981\u544a\u8bc9\u6211\u66f4\u6539\u5b83\uff0c\u9664\u975e\u60a8\u89e3\u91ca\u4e86\u4e3a\u4ec0\u4e48\u60a8\u5efa\u8bae\u7684\u914d\u7f6e\u662f\u6b63\u786e\u7684\u6216\u8005\u60a8\u4eb2\u81ea\u9a8c\u8bc1\u4e86\u5b83\u7f16\u8bd1\u3002<\/p>\n
import (\n    \"context\"\n\n    \"cloud.google.com\/go\/pubsub\"\n)\n\ntype receiver interface {\n    receive(context.context, func(ctx context.context, msg *pubsub.message)) (err error)\n}\n\n\/\/ pubsub subscriptions implement receiver\nvar _ receiver = &pubsub.subscription{}\n\ntype subscriptionmaker interface {\n    subscription(name string) (s receiver)\n}\n\n\/\/ pubsub clients implement subscriptionmaker\nvar _ subscriptionmaker = pubsub.client{}\n<\/pre>\n
\u5f53\u524d\u9519\u8bef\u6d88\u606f\uff1a<\/p>\n
common_types.go:21:5: cannot use \"cloud.google.com\/go\/pubsub\".Client literal (type \"cloud.google.com\/go\/pubsub\".Client) as type SubscriptionMaker in assignment:\n    \"cloud.google.com\/go\/pubsub\".Client does not implement SubscriptionMaker (wrong type for Subscription method)\n        have Subscription(string) *\"cloud.google.com\/go\/pubsub\".Subscription\n        want Subscription(string) Receiver<\/pre>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u8fd9\u662f\u4e0d\u53ef\u80fd\u7684\u3002<\/p>\n
\u5728\u63a5\u53e3\u4e0a\u5b9a\u4e49\u65b9\u6cd5\u7684\u7c7b\u578b\u7b7e\u540d\u65f6\uff0c\u5b83\u5fc5\u987b\u5b8c\u5168\u5339\u914d\u3002 func (c *client) subscription(id string) *subscription<\/code> \u8fd4\u56de\u4e00\u4e2a *subscription<\/code>\uff0c\u800c *subscription<\/code> \u662f\u4e00\u4e2a\u6709\u6548\u7684 receiver<\/code>\uff0c\u4f46\u5b83\u4e0d\u7b97\u7b26\u5408\u63a5\u53e3\u65b9\u6cd5 subscription(string) receiver<\/code>\u3002 go \u9700\u8981\u51fd\u6570\u7b7e\u540d\u7684\u7cbe\u786e\u5339\u914d\uff0c\u800c\u4e0d\u662f\u901a\u5e38\u7528\u4e8e\u63a5\u53e3\u7684\u9e2d\u5b50\u7c7b\u578b\u98ce\u683c\u3002<\/p>\n
\u9996\u5148\uff0c\u5bf9\u4e8e\u5927\u591a\u6570\u7528\u9014\uff0c\u4f7f\u7528 \u5305\u53ef\u80fd\u662f\u6d4b\u8bd5 pubsub \u7684\u66f4\u7b80\u5355\u7684\u65b9\u6cd5\u3002\u4f46\u662f\u5f53\u7136\uff0c\u60a8\u7684\u5177\u4f53\u95ee\u9898\u53ef\u4ee5\u9002\u7528\u4e8e\u4efb\u4f55\u5e93\uff0c\u5e76\u4e14\u4ee5\u4e0b\u65b9\u6cd5\u5bf9\u5f88\u591a\u4e8b\u60c5\u90fd\u6709\u7528\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u5632\u7b11 pubsub<\/code>\u3002<\/p>\n
\u4f7f\u7528\u63a5\u53e3\u6765\u6a21\u62df\u8fd9\u6837\u7684\u5e93\u7684\u66f4\u5e7f\u6cdb\u76ee\u6807\u662f\u53ef\u884c\u7684\u3002\u4f46\u662f\uff0c\u5f53\u60a8\u5e0c\u671b\u6a21\u62df\u7684\u5e93\u8fd4\u56de\u60a8\u65e0\u6cd5\u6a21\u62df\u7684\u5177\u4f53\u7c7b\u578b\uff08\u53ef\u80fd\u662f\u7531\u4e8e\u672a\u62a5\u544a\u7684\u5b57\u6bb5\uff09\u65f6\uff0c\u60c5\u51b5\u4f1a\u5f88\u590d\u6742\u3002\u8981\u91c7\u53d6\u7684\u65b9\u6cd5\u6bd4\u901a\u5e38\u503c\u5f97\u7684\u8981\u590d\u6742\u5f97\u591a\uff0c\u56e0\u4e3a\u53ef\u80fd\u6709\u66f4\u7b80\u5355\u7684\u65b9\u6cd5\u6765\u6d4b\u8bd5\u60a8\u7684\u4ee3\u7801\u3002<\/p>\n
\u4f46\u662f\uff0c\u5982\u679c\u60a8\u6253\u7b97\u8fd9\u6837\u505a\uff0c\u5219\u5fc5\u987b\u91c7\u53d6\u7684\u65b9\u6cd5\u662f\u4e0d\u8981\u5c06\u6574\u4e2a\u5305\u5305\u88c5\u5728\u63a5\u53e3\u4e2d\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u60a8\u5e0c\u671b\u6a21\u62df\u7684\u7279\u5b9a\u65b9\u6cd5\u3002<\/p>\n
\u60a8\u8fd8\u9700\u8981\u5305\u88c5\u60a8\u5e0c\u671b\u6a21\u62df\u7684\u4efb\u4f55\u7c7b\u578b\uff0c\u8fd9\u4e9b\u7c7b\u578b\u4e5f\u7531\u60a8\u7684\u754c\u9762\u8fd4\u56de\u6216\u63a5\u53d7\u3002\u8fd9\u901a\u5e38\u610f\u5473\u7740\u60a8\u8fd8\u9700\u8981\u4fee\u6539\u751f\u4ea7\u4ee3\u7801\uff08\u800c\u4e0d\u4ec5\u4ec5\u662f\u6d4b\u8bd5\u4ee3\u7801\uff09\uff0c\u56e0\u6b64\u8fd9\u6709\u65f6\u53ef\u80fd\u4f1a\u7834\u574f\u73b0\u6709\u4ee3\u7801\u5e93\u7684\u4ea4\u6613\u3002<\/p>\n
\u6211\u4ee5\u524d\u901a\u5e38\u8fd9\u6837\u505a\u662f\u5728\u6a21\u62df\u6807\u51c6\u5e93\u7684 sql \u9a71\u52a8\u7a0b\u5e8f\u4e4b\u7c7b\u7684\u4e1c\u897f\u65f6\uff0c\u4f46\u8fd9\u91cc\u53ef\u4ee5\u5e94\u7528\u76f8\u540c\u7684\u65b9\u6cd5\u3002\u672c\u8d28\u4e0a\uff0c\u60a8\u9700\u8981\u4e3a pubsub<\/code> \u5e93\u521b\u5efa\u4e00\u4e2a\u5305\u88c5\u5668\u5305\uff0c\u751a\u81f3\u53ef\u4ee5\u5728\u751f\u4ea7\u4ee3\u7801\u4e2d\u4f7f\u7528\u5b83\u3002\u540c\u6837\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bf9\u73b0\u6709\u4ee3\u7801\u5e93\u9020\u6210\u5f88\u5927\u7684\u5e72\u6270\uff0c\u4f46\u53ea\u662f\u4e3a\u4e86\u8bf4\u660e\u76ee\u7684\u3002\u4f7f\u7528\u60a8\u5b9a\u4e49\u7684\u63a5\u53e3\uff1a<\/p>\n
package mypubsub\n\nimport \"cloud.google.com\/go\/pubsub\"\n\ntype receiver interface {\n    recieve(context.context, func(context.context, *pubsub.message) error)\n}\n\ntype subscriptionmaker interface {\n    subscription(string) receiver\n}<\/pre>\n
\u7136\u540e\u60a8\u53ef\u4ee5\u5305\u88c5\u9ed8\u8ba4\u5b9e\u73b0\uff0c\u4ee5\u4fbf\u5728\u751f\u4ea7\u4ee3\u7801\u4e2d\u4f7f\u7528\uff1a<\/p>\n
\/\/ defaultClient wraps the default pubsub Client functionality.\ntype defaultClient struct {\n    *pubsub.Client\n}\n\nfunc (d defaultImplementation) Subscription(name string) Receiver {\n    return d.Client.Subscription()\n}<\/pre>\n
\u5f53\u7136\uff0c\u60a8\u9700\u8981\u6269\u5c55\u6b64\u5305\u4ee5\u5305\u88c5\u60a8\u6b63\u5728\u4f7f\u7528\u7684\u5927\u90e8\u5206\u6216\u5168\u90e8 pubsub<\/code> \u5305\u3002\u8fd9\u53ef\u80fd\u6709\u70b9\u4ee4\u4eba\u754f\u60e7\u3002<\/p>\n
\u4f46\u662f\u5b8c\u6210\u6b64\u64cd\u4f5c\u540e\uff0c\u8bf7\u5728\u4ee3\u7801\u4e2d\u7684\u4efb\u4f55\u4f4d\u7f6e\u4f7f\u7528 mypubsub<\/code> \u5305\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u4f9d\u8d56 pubsub<\/code> \u5305\u3002\u73b0\u5728\uff0c\u60a8\u53ef\u4ee5\u5728\u9700\u8981\u6d4b\u8bd5\u7684\u4efb\u4f55\u5730\u65b9\u8f7b\u677e\u66f4\u6362\u6a21\u62df\u5b9e\u73b0\u3002<\/p>\n
\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8eGolang\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/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-208265","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208265","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=208265"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208265\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}