{"id":751,"date":"2024-11-13T00:29:07","date_gmt":"2024-11-12T16:29:07","guid":{"rendered":"https:\/\/www.db2go.net\/?p=751"},"modified":"2024-11-13T00:29:07","modified_gmt":"2024-11-12T16:29:07","slug":"%e4%ba%94-%e8%be%b9%e7%bc%98%e8%87%aa%e6%b2%bb%e4%b8%8e%e6%96%ad%e7%ba%bf%e7%bb%ad%e4%bc%a0%e7%9a%84%e6%a0%b8%e5%bf%83%e4%bb%a3%e7%a0%81","status":"publish","type":"post","link":"https:\/\/www.db2go.net\/?p=751","title":{"rendered":"\u4e94.\u8fb9\u7f18\u81ea\u6cbb\u4e0e\u65ad\u7ebf\u7eed\u4f20\u7684\u6838\u5fc3\u4ee3\u7801"},"content":{"rendered":"<p>\u5728 KubeEdge \u4e2d\uff0c\u8fb9\u7f18\u81ea\u6cbb\u4e0e\u65ad\u7ebf\u7eed\u4f20\u7684\u529f\u80fd\u4e3b\u8981\u7531 <code>metamanager<\/code>\uff08\u8fb9\u7aef\uff09\u548c <code>cloudhub<\/code>\uff08\u4e91\u7aef\uff09\u6a21\u5757\u5b9e\u73b0\u3002<code>metamanager<\/code> \u6a21\u5757\u8d1f\u8d23\u5728\u8fb9\u7f18\u8282\u70b9\u7f13\u5b58\u4e91\u7aef\u4e0b\u53d1\u7684\u6570\u636e\uff0c\u5e76\u5728\u4e91\u7aef\u8fde\u63a5\u65ad\u5f00\u65f6\u4fdd\u8bc1\u8fb9\u7f18\u8282\u70b9\u7684\u6b63\u5e38\u8fd0\u4f5c\u3002\u5728\u7f51\u7edc\u6062\u590d\u65f6\uff0c<code>metamanager<\/code> \u4f1a\u540c\u6b65\u7f13\u5b58\u7684\u6570\u636e\uff0c\u786e\u4fdd\u6570\u636e\u4e00\u81f4\u6027\u3002\u4ee5\u4e0b\u662f\u8fb9\u7f18\u81ea\u6cbb\u4e0e\u65ad\u7ebf\u7eed\u4f20\u6838\u5fc3\u4ee3\u7801\u7684\u8be6\u7ec6\u5206\u6790\u3002<\/p>\n<h3>1. <code>metamanager<\/code> \u6a21\u5757\uff08\u8fb9\u7aef\uff09<\/h3>\n<p><code>metamanager<\/code> \u6a21\u5757\u4f4d\u4e8e <code>edge\/pkg\/metamanager<\/code> \u76ee\u5f55\u4e0b\u3002\u5b83\u7684\u4e3b\u8981\u804c\u8d23\u662f\u7f13\u5b58\u4ece\u4e91\u7aef\u4e0b\u53d1\u7684\u8d44\u6e90\u6570\u636e\uff08\u5982 Pod \u4fe1\u606f\u3001\u914d\u7f6e\u6570\u636e\u7b49\uff09\uff0c\u5e76\u5728\u7f51\u7edc\u65ad\u5f00\u65f6\u63d0\u4f9b\u672c\u5730\u6570\u636e\uff0c\u4f7f\u8fb9\u7f18\u8282\u70b9\u80fd\u591f\u7ee7\u7eed\u5de5\u4f5c\u3002<\/p>\n<h4>\u672c\u5730\u7f13\u5b58\u4e0e\u8d44\u6e90\u7ba1\u7406<\/h4>\n<p><code>metamanager<\/code> \u4f7f\u7528\u4e00\u4e2a\u672c\u5730\u6570\u636e\u5e93\uff08\u5982 SQLite\uff09\u6216\u6587\u4ef6\u7cfb\u7edf\u6765\u5b58\u50a8\u7f13\u5b58\u6570\u636e\u3002\u5728\u7f51\u7edc\u8fde\u63a5\u65ad\u5f00\u65f6\uff0c\u8fb9\u7aef\u4f9d\u7136\u53ef\u4ee5\u901a\u8fc7\u672c\u5730\u7f13\u5b58\u63d0\u4f9b\u7684\u8d44\u6e90\u6570\u636e\u7ee7\u7eed\u8fd0\u884c\u3002<\/p>\n<ul>\n<li><strong>\u7f13\u5b58\u5b58\u50a8<\/strong>\uff1a\u5728 <code>edge\/pkg\/metamanager\/dao<\/code> \u4e2d\u5b9a\u4e49\u4e86\u5bf9 SQLite \u6570\u636e\u5e93\u7684\u64cd\u4f5c\uff0c\u8d1f\u8d23\u5c06\u4e91\u7aef\u4e0b\u53d1\u7684\u6570\u636e\u6301\u4e45\u5316\u5230\u672c\u5730\u3002\n<pre><code class=\"language-go line-numbers\">func InsertOrUpdate(meta *Meta) error {\n  db := getDB()\n  _, err := db.Exec(\"INSERT OR REPLACE INTO meta (key, value) VALUES (?, ?)\", meta.Key, meta.Value)\n  return err\n}\n<\/code><\/pre>\n<p><code>InsertOrUpdate<\/code> \u51fd\u6570\u5c06\u4e91\u7aef\u4e0b\u53d1\u7684\u8d44\u6e90\u4fe1\u606f\u5b58\u50a8\u5230\u6570\u636e\u5e93\u4e2d\uff0c<code>meta<\/code> \u8868\u7528\u4e8e\u5b58\u50a8\u8d44\u6e90\u7684\u952e\u503c\u5bf9\u4fe1\u606f\uff0c\u5305\u62ec Pod \u4fe1\u606f\u3001\u914d\u7f6e\u7b49\u3002\u8fd9\u4f7f\u5f97\u5373\u4f7f\u5728\u65ad\u7f51\u7684\u60c5\u51b5\u4e0b\uff0c\u8fb9\u7f18\u8282\u70b9\u4e5f\u53ef\u4ee5\u8bfb\u53d6\u8fd9\u4e9b\u8d44\u6e90\u6570\u636e\u3002<\/p>\n<\/li>\n<\/ul>\n<h4>\u6570\u636e\u540c\u6b65\u4e0e\u65ad\u7ebf\u68c0\u6d4b<\/h4>\n<p>\u5728 <code>metamanager<\/code> \u4e2d\uff0c<code>sync.go<\/code> \u6587\u4ef6\u5b9e\u73b0\u4e86\u6570\u636e\u540c\u6b65\u4e0e\u65ad\u7ebf\u68c0\u6d4b\u7684\u903b\u8f91\u3002<\/p>\n<ul>\n<li><strong>\u65ad\u7ebf\u68c0\u6d4b\u4e0e\u5207\u6362\u6a21\u5f0f<\/strong>\uff1a\u5f53\u68c0\u6d4b\u5230\u4e91\u7aef\u8fde\u63a5\u65ad\u5f00\u65f6\uff0c<code>metamanager<\/code> \u5207\u6362\u5230\u79bb\u7ebf\u6a21\u5f0f\uff0c\u4ec5\u4f9d\u8d56\u672c\u5730\u7f13\u5b58\u63d0\u4f9b\u7684\u8d44\u6e90\u6570\u636e\u3002\u5f53\u7f51\u7edc\u6062\u590d\u540e\uff0c<code>metamanager<\/code> \u4f1a\u81ea\u52a8\u5c06\u7f13\u5b58\u6570\u636e\u540c\u6b65\u5230\u4e91\u7aef\u3002\n<pre><code class=\"language-go line-numbers\">func (mm *MetaManager) ProcessUpstream(message model.Message) {\n  if mm.isCloudConnected() {\n      mm.sendToCloud(message)\n  } else {\n      mm.cacheMessage(message)\n  }\n}\n<\/code><\/pre>\n<p><code>ProcessUpstream<\/code> \u51fd\u6570\u4f1a\u68c0\u6d4b\u4e91\u7aef\u8fde\u63a5\u72b6\u6001\u3002\u5982\u679c\u8fde\u63a5\u65ad\u5f00\uff0c\u6d88\u606f\u4f1a\u88ab\u7f13\u5b58\u5230\u672c\u5730\uff0c\u7b49\u5f85\u7f51\u7edc\u6062\u590d\u540e\u518d\u540c\u6b65\u81f3\u4e91\u7aef\u3002<\/p>\n<\/li>\n<\/ul>\n<h4>\u7f13\u5b58\u6d88\u606f\u91cd\u53d1\u673a\u5236<\/h4>\n<p>\u5728\u7f51\u7edc\u6062\u590d\u65f6\uff0c<code>metamanager<\/code> \u4f1a\u5c06\u7f13\u5b58\u7684\u6d88\u606f\u91cd\u65b0\u53d1\u9001\u5230\u4e91\u7aef\uff0c\u4ee5\u786e\u4fdd\u6240\u6709\u7684\u8d44\u6e90\u6570\u636e\u548c\u72b6\u6001\u66f4\u65b0\u90fd\u5f97\u5230\u5904\u7406\u3002<\/p>\n<ul>\n<li><strong>\u91cd\u53d1\u7f13\u5b58\u6d88\u606f<\/strong>\uff1a<code>resendCachedMessages<\/code> \u51fd\u6570\u8d1f\u8d23\u5c06\u7f13\u5b58\u7684\u6d88\u606f\u9010\u6761\u91cd\u53d1\u5230\u4e91\u7aef\u3002\n<pre><code class=\"language-go line-numbers\">func (mm *MetaManager) resendCachedMessages() {\n  cachedMessages := mm.getCachedMessages()\n  for _, msg := range cachedMessages {\n      mm.sendToCloud(msg)\n  }\n}\n<\/code><\/pre>\n<p><code>resendCachedMessages<\/code> \u4ece\u7f13\u5b58\u4e2d\u8bfb\u53d6\u6d88\u606f\u5e76\u9010\u6761\u53d1\u9001\u5230\u4e91\u7aef\uff0c\u5728\u7f51\u7edc\u6062\u590d\u540e\uff0c\u786e\u4fdd\u8fb9\u7f18\u8282\u70b9\u7684\u72b6\u6001\u548c\u6570\u636e\u4e0e\u4e91\u7aef\u4e00\u81f4\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>2. <code>cloudhub<\/code> \u6a21\u5757\uff08\u4e91\u7aef\uff09<\/h3>\n<p>\u5728\u4e91\u7aef\u7684 <code>cloudhub<\/code> \u6a21\u5757\u4e2d\uff0c\u6d88\u606f\u5904\u7406\u548c\u8def\u7531\u7684\u8bbe\u8ba1\u786e\u4fdd\u4e86\u4e0e\u65ad\u7ebf\u7eed\u4f20\u529f\u80fd\u7684\u914d\u5408\u3002\u5728\u7f51\u7edc\u6062\u590d\u65f6\uff0c<code>cloudhub<\/code> \u4f1a\u6b63\u5e38\u63a5\u6536\u6765\u81ea\u8fb9\u7aef\u7684\u6d88\u606f\uff0c\u5b8c\u6210\u8d44\u6e90\u6570\u636e\u7684\u66f4\u65b0\u3002<code>cloudhub<\/code> \u7684\u6838\u5fc3\u4ee3\u7801\u4f4d\u4e8e <code>cloud\/pkg\/cloudhub<\/code> \u76ee\u5f55\u3002<\/p>\n<h4>\u6d88\u606f\u63a5\u6536\u4e0e\u5904\u7406<\/h4>\n<p><code>cloudhub<\/code> \u4f7f\u7528 <code>messagehandler.go<\/code> \u6587\u4ef6\u4e2d\u7684 <code>ProcessMessage<\/code> \u51fd\u6570\u6765\u63a5\u6536\u548c\u5904\u7406\u6765\u81ea\u8fb9\u7aef\u7684\u6d88\u606f\u3002\u5f53\u7f51\u7edc\u6062\u590d\u540e\uff0c\u8fb9\u7aef\u4f1a\u5c06\u7f13\u5b58\u7684\u6d88\u606f\u9010\u6761\u53d1\u9001\u5230\u4e91\u7aef\uff0c\u4e91\u7aef\u6b63\u5e38\u63a5\u6536\u5e76\u66f4\u65b0\u8d44\u6e90\u72b6\u6001\u3002<\/p>\n<ul>\n<li><strong>\u6d88\u606f\u5904\u7406<\/strong>\uff1a\u5728 <code>ProcessMessage<\/code> \u51fd\u6570\u4e2d\u5904\u7406\u8fb9\u7aef\u4e0a\u62a5\u7684\u6d88\u606f\uff0c\u5982\u679c\u662f\u7f13\u5b58\u7684\u5386\u53f2\u6d88\u606f\uff0c\u4e91\u7aef\u4f1a\u6839\u636e\u6d88\u606f\u5185\u5bb9\u66f4\u65b0\u8d44\u6e90\u72b6\u6001\u3002\n<pre><code class=\"language-go line-numbers\">func (mh *MessageHandler) ProcessMessage(msg model.Message) {\n  if msg.IsStatusUpdate() {\n      mh.updateResourceStatus(msg)\n  } else {\n      mh.routeMessage(msg)\n  }\n}\n<\/code><\/pre>\n<p><code>ProcessMessage<\/code> \u51fd\u6570\u6839\u636e\u6d88\u606f\u5185\u5bb9\u9009\u62e9\u4e0d\u540c\u7684\u5904\u7406\u903b\u8f91\uff0c\u4f8b\u5982\u66f4\u65b0\u8d44\u6e90\u72b6\u6001\u3001\u8f6c\u53d1\u6d88\u606f\u7b49\u3002<\/p>\n<\/li>\n<\/ul>\n<h4>\u8d44\u6e90\u72b6\u6001\u66f4\u65b0<\/h4>\n<p>\u4e91\u7aef\u4f1a\u6839\u636e\u8fb9\u7aef\u7f13\u5b58\u7684\u6d88\u606f\u5185\u5bb9\u5bf9\u8d44\u6e90\u72b6\u6001\u8fdb\u884c\u66f4\u65b0\uff0c\u786e\u4fdd\u4e91\u8fb9\u8d44\u6e90\u7684\u4e00\u81f4\u6027\u3002<code>updateResourceStatus<\/code> \u51fd\u6570\u8d1f\u8d23\u63a5\u6536\u6765\u81ea\u8fb9\u7aef\u7684\u72b6\u6001\u66f4\u65b0\u6d88\u606f\uff0c\u5e76\u5c06\u8fd9\u4e9b\u4fe1\u606f\u6301\u4e45\u5316\u5230\u4e91\u7aef\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n<h3>3. \u8fb9\u7aef\u4e0e\u4e91\u7aef\u7684\u6570\u636e\u7ed3\u6784\uff08\u6d88\u606f\u7ed3\u6784\uff09<\/h3>\n<p>\u5728\u65ad\u7ebf\u7eed\u4f20\u673a\u5236\u4e2d\uff0c\u6d88\u606f\u7ed3\u6784\u7684\u5b9a\u4e49\u662f\u5173\u952e\u3002\u5728 <code>pkg\/common\/message\/message.go<\/code> \u4e2d\uff0c\u5b9a\u4e49\u4e86 KubeEdge \u7684 <code>Message<\/code> \u7ed3\u6784\uff0c\u5305\u542b\u4e86\u7528\u4e8e\u6d88\u606f\u8def\u7531\u7684\u76ee\u6807\u4fe1\u606f\u3001\u64cd\u4f5c\u7c7b\u578b\u548c\u5185\u5bb9\u7b49\u3002<\/p>\n<pre><code class=\"language-go line-numbers\">type Message struct {\n    Header Header\n    Router Router\n    Content interface{}\n}\n<\/code><\/pre>\n<ul>\n<li><strong>Router<\/strong>\uff1a\u6d88\u606f\u7684\u8def\u7531\u4fe1\u606f\uff0c\u5305\u62ec\u6765\u6e90\u3001\u76ee\u6807\u3001\u7ec4\u548c\u8d44\u6e90\u8def\u5f84\u7b49\u3002\u65ad\u7ebf\u7eed\u4f20\u673a\u5236\u4f9d\u8d56\u8fd9\u4e9b\u4fe1\u606f\u6765\u5b9a\u4f4d\u5e76\u66f4\u65b0\u4e91\u7aef\u7684\u8d44\u6e90\u3002<\/li>\n<li><strong>Content<\/strong>\uff1a\u6d88\u606f\u7684\u5185\u5bb9\u5b57\u6bb5\u901a\u5e38\u5305\u542b\u8d44\u6e90\u6570\u636e\u6216\u72b6\u6001\u4fe1\u606f\uff0c\u5728\u65ad\u7f51\u671f\u95f4\u88ab\u7f13\u5b58\u5e76\u5728\u6062\u590d\u540e\u53d1\u9001\u5230\u4e91\u7aef\u3002<\/li>\n<\/ul>\n<h3>4. \u79bb\u7ebf\u6a21\u5f0f\u548c\u672c\u5730\u4efb\u52a1\u6267\u884c<\/h3>\n<p>\u5f53\u68c0\u6d4b\u5230\u4e91\u7aef\u8fde\u63a5\u65ad\u5f00\u65f6\uff0c<code>metamanager<\/code> \u4f1a\u8fdb\u5165\u79bb\u7ebf\u6a21\u5f0f\uff0c\u5e76\u5728\u672c\u5730\u7ee7\u7eed\u6267\u884c\u4efb\u52a1\u3002\u4f8b\u5982\uff0cPod \u7684\u521b\u5efa\u3001\u72b6\u6001\u76d1\u63a7\u7b49\u4efb\u52a1\u5c06\u4e0d\u4f9d\u8d56\u4e91\u7aef\u3002<\/p>\n<ul>\n<li><strong>\u4efb\u52a1\u6267\u884c<\/strong>\uff1a\u5373\u4f7f\u5728\u65ad\u7f51\u671f\u95f4\uff0c\u8fb9\u7aef\u4ecd\u7136\u53ef\u4ee5\u57fa\u4e8e\u672c\u5730\u7f13\u5b58\u7684\u6570\u636e\u6267\u884c Kubernetes \u4e0b\u53d1\u7684\u4efb\u52a1\u3002\u4efb\u52a1\u72b6\u6001\u4f1a\u88ab\u5b58\u50a8\u5728\u672c\u5730\uff0c\u7b49\u5f85\u7f51\u7edc\u6062\u590d\u540e\u4e0a\u62a5\u81f3\u4e91\u7aef\u3002<\/li>\n<\/ul>\n<h3>\u603b\u7ed3<\/h3>\n<p>KubeEdge \u7684\u8fb9\u7f18\u81ea\u6cbb\u4e0e\u65ad\u7ebf\u7eed\u4f20\u901a\u8fc7 <code>metamanager<\/code> \u6a21\u5757\u5b9e\u73b0\u4e86\u5bf9\u4e91\u7aef\u8d44\u6e90\u7684\u672c\u5730\u7f13\u5b58\uff0c\u4f7f\u5f97\u8fb9\u7f18\u8282\u70b9\u53ef\u4ee5\u5728\u7f51\u7edc\u4e0d\u7a33\u5b9a\u6216\u65ad\u5f00\u65f6\u7ee7\u7eed\u5de5\u4f5c\u3002\u7f13\u5b58\u7684\u6570\u636e\u5728\u7f51\u7edc\u6062\u590d\u540e\u540c\u6b65\u81f3\u4e91\u7aef\uff0c<code>cloudhub<\/code> \u6a21\u5757\u8d1f\u8d23\u63a5\u6536\u5e76\u66f4\u65b0\u8d44\u6e90\u72b6\u6001\uff0c\u4ece\u800c\u786e\u4fdd\u4e91\u8fb9\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002\u8be5\u8bbe\u8ba1\u4f7f\u5f97 KubeEdge \u80fd\u591f\u6709\u6548\u652f\u6301\u8fb9\u7f18\u573a\u666f\u4e0b\u7684\u81ea\u4e3b\u8fd0\u884c\u548c\u7a33\u5b9a\u6027\uff0c\u5c24\u5176\u9002\u5408\u7f51\u7edc\u6761\u4ef6\u4e0d\u4f73\u7684\u7269\u8054\u7f51\u5e94\u7528\u573a\u666f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 KubeEdge \u4e2d\uff0c\u8fb9\u7f18\u81ea\u6cbb\u4e0e\u65ad\u7ebf\u7eed\u4f20\u7684\u529f\u80fd\u4e3b\u8981\u7531 metamanager\uff08\u8fb9\u7aef\uff09\u548c cloudhub\uff08&hellip;<\/p>\n <a href=\"https:\/\/www.db2go.net\/?p=751\" title=\"\u4e94.\u8fb9\u7f18\u81ea\u6cbb\u4e0e\u65ad\u7ebf\u7eed\u4f20\u7684\u6838\u5fc3\u4ee3\u7801\" class=\"entry-more-link\"><span>Read More<\/span> <span class=\"screen-reader-text\">\u4e94.\u8fb9\u7f18\u81ea\u6cbb\u4e0e\u65ad\u7ebf\u7eed\u4f20\u7684\u6838\u5fc3\u4ee3\u7801<\/span><\/a>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"Layout":"","footnotes":""},"categories":[20],"tags":[],"class_list":["entry","author-suredandan","post-751","post","type-post","status-publish","format-standard","category-20"],"views":1303,"_links":{"self":[{"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/posts\/751","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.db2go.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=751"}],"version-history":[{"count":1,"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/posts\/751\/revisions"}],"predecessor-version":[{"id":752,"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/posts\/751\/revisions\/752"}],"wp:attachment":[{"href":"https:\/\/www.db2go.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=751"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.db2go.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=751"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.db2go.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=751"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}