{"id":48027,"date":"2023-02-17T06:04:18","date_gmt":"2023-08-25T23:39:05","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8-amplify-x-appsync-%e6%9d%a5%e5%af%b9-subscription-%e8%bf%9b%e8%a1%8c%e8%bf%87%e6%bb%a4%e3%80%82\/"},"modified":"2024-04-29T14:56:45","modified_gmt":"2024-04-29T06:56:45","slug":"%e4%bd%bf%e7%94%a8-amplify-x-appsync-%e6%9d%a5%e5%af%b9-subscription-%e8%bf%9b%e8%a1%8c%e8%bf%87%e6%bb%a4%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8-amplify-x-appsync-%e6%9d%a5%e5%af%b9-subscription-%e8%bf%9b%e8%a1%8c%e8%bf%87%e6%bb%a4%e3%80%82\/","title":{"rendered":"\u4f7f\u7528 Amplify \u00d7 AppSync \u6765\u5bf9 Subscription \u8fdb\u884c\u8fc7\u6ee4"},"content":{"rendered":"<h2>\u603b\u7ed3<\/h2>\n<p>\u4e3a\u4e86\u5b9e\u65f6\u53cd\u6620\u6570\u636e\uff0c\u6211\u4eec\u4f7f\u7528\u8ba2\u9605\uff08subscription\uff09\u3002\u6211\u4eec\u4e4b\u524d\u662f\u901a\u8fc7@model\u81ea\u52a8\u751f\u6210\u8ba2\u9605\uff0c\u4f46\u662f\u81ea\u52a8\u751f\u6210\u7684\u8ba2\u9605\u4e0d\u80fd\u8fdb\u884c\u7b5b\u9009\uff0c\u5bfc\u81f4\u663e\u793a\u4e86\u4e0e\u76f8\u5173\u6027\u65e0\u5173\u7684\u6570\u636e\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u73b0\u5728\u6539\u4e3a\u624b\u52a8\u521b\u5efa\u8ba2\u9605\uff0c\u5e76\u901a\u8fc7\u53c2\u6570\u8fdb\u884c\u7b5b\u9009\u3002<\/p>\n<h2>\u5b9e\u65bd<\/h2>\n<h3>\u6a21\u5f0f<\/h3>\n<p>\u4e4b\u524d\u6211\u4eec\u662f\u901a\u8fc7@model\u81ea\u52a8\u751f\u6210\u8ba2\u9605\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code>type Task\r\n@model(subscriptions: { level: public })\r\n{\r\n  id: ID!\r\n  name: String!\r\n  detail: String\r\n}\r\n<\/code><\/pre>\n<p>\u2193\u4ea7\u751f<\/p>\n<pre class=\"post-pre\"><code>export const onCreateTask = \/* GraphQL *\/ `\r\n  subscription OnCreateTask {\r\n    onCreateTask {\r\n      id\r\n      name\r\n      detail\r\n    }\r\n  }\r\n`;\r\n\r\nexport const onUpdateTask = \/* GraphQL *\/ `\r\n  subscription OnUpdateTask {\r\n    onUpdateTask {\r\n      id\r\n      sequence\r\n      name\r\n      detail\r\n    }\r\n  }\r\n`;\r\n\r\nexport const onDeleteTask = \/* GraphQL *\/ `\r\n  subscription OnDeleteTask {\r\n    onDeleteTask {\r\n      id\r\n      name\r\n      detail\r\n    }\r\n  }\r\n`;\r\n<\/code><\/pre>\n<p>\u7136\u800c\uff0c\u4f7f\u7528\u81ea\u52a8\u751f\u6210\u65e0\u6cd5\u8fdb\u884c\u8fc7\u6ee4\u3002<br \/>\n\u56e0\u6b64\uff0c\u6211\u5c06\u5728@model\u4e2d\u7981\u7528\u81ea\u52a8\u751f\u6210\u8ba2\u9605\u3002<\/p>\n<pre class=\"post-pre\"><code>type Task\r\n@model(subscriptions: null)\r\n{\r\n  id: ID!\r\n  name: String!\r\n  detail: String\r\n}\r\n<\/code><\/pre>\n<p>\u7136\u540e\u5728schema.graphql\u4e2d\u6dfb\u52a0\u81ea\u5b9a\u4e49\u8ba2\u9605\u3002<br \/>\n\u8ba2\u9605\u540d\u79f0(\u53c2\u6570): \u7c7b\u578b @aws_subscribe(mutations: [Mutation\u540d\u79f0])\u7684\u5199\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code>type Subscription {\r\n  onCreateTaskByName(name: String): Task\r\n    @aws_subscribe(mutations: [\"createTask\"])\r\n\r\n  \/\/ Mutation\u306etype\u306fcreate\u30fbupdate\u30fbdelete\u306e3\u7a2e\u985e\u3002\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u8a2d\u5b9a\u3002\r\n  onUpdateTaskByName(name: String): Task\r\n    @aws_subscribe(mutations: [\"updateTask\"])\r\n  onDeleteTaskByName(name: String): Task\r\n    @aws_subscribe(mutations: [\"deleteTask\"])\r\n}\r\n<\/code><\/pre>\n<p>\u2193\u4ea7\u751f<\/p>\n<pre class=\"post-pre\"><code>export const onCreateTaskByName = \/* GraphQL *\/ `\r\n  subscription OnCreateTaskByName($name: String) {\r\n    onCreateTaskByName(name: $name) {\r\n      id\r\n      name\r\n      detail\r\n    }\r\n  }\r\n`;\r\n\r\nexport const onUpdateTaskByName = \/* GraphQL *\/ `\r\n  subscription OnUpdateTaskByName($name: String) {\r\n    onUpdateTaskByName(name: $name) {\r\n      id\r\n      name\r\n      detail\r\n    }\r\n  }\r\n;`\r\n\r\nexport const onDeleteTaskByName = \/* GraphQL *\/ `\r\n  subscription OnDeleteTaskByName($name: String) {\r\n    onDeleteTaskByName(name: $name) {\r\n      id\r\n      name\r\n      detail\r\n    }\r\n  }\r\n;'\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u8fd9\u6837\u505a\uff0c\u73b0\u5728\u53ef\u4ee5\u5c06\u53c2\u6570\u4f20\u9012\u7ed9\u8ba2\u9605\uff0c\u5e76\u4e14\u53ef\u4ee5\u8fdb\u884c\u7b5b\u9009\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u8bbe\u7f6e\u591a\u4e2a\u53c2\u6570\u3002\u82e5\u8bbe\u7f6e\u4e86\u591a\u4e2a\u53c2\u6570\uff0c\u5219\u53ea\u6709\u5728\u5b8c\u5168\u5339\u914d\u8fd9\u4e9b\u53c2\u6570\u65f6\uff0c\u624d\u4f1a\u8fdb\u884c\u8ba2\u9605\u3002<\/p>\n<pre class=\"post-pre\"><code>type Subscription {\r\n  onCreateTaskByName(name: String, detail: String): Task\r\n    @aws_subscribe(mutations: [\"createTask\"])\r\n}\r\n<\/code><\/pre>\n<h2>\u53ec\u5524<\/h2>\n<pre class=\"post-pre\"><code>import Amplify, { API } from \"aws-amplify\";\r\nimport { subscriptions } from \"src\/graphql\/subscriptions\";\r\n\r\nfunction subscribe() {\r\n    const subscription = API.graphql({\r\n      query: subscriptions.onCreateTaskByName,\r\n      variables: {\r\n        name: \"Test\",\r\n      },\r\n    }).subscribe({\r\n      next: ({ provider, value }) =&gt; {\r\n        console.log(\"Subscribe:\", { provider, value });\r\n        subscription.unsubscribe();\r\n      },\r\n      error: (error) =&gt; console.warn(error),\r\n    });\r\n};\r\n<\/code><\/pre>\n<p>\u73b0\u5728\u53ea\u6709\u5728\u521b\u5efa\u4e86\u540d\u4e3a&#8221;Test&#8221;\u7684\u4efb\u52a1\u65f6\u624d\u80fd\u8fdb\u884c\u8ba2\u9605\u3002<\/p>\n<p>\u5982\u679c\u4f7f\u7528graphqlOperation\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n<pre class=\"post-pre\"><code>import Amplify, { API, graphqlOperation } from \"aws-amplify\";\r\nimport { subscriptions } from \"src\/graphql\/subscriptions\";\r\n\r\nfunction subscribe() {\r\n    const subscription = API.graphql(\r\n      \/\/ TypeScript\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u578b\u5b9a\u7fa9\u3082\u53ef\u80fd\r\n      graphqlOperation(subscriptions.onCreateTaskByName as \u578b, {\r\n        name: \"Test\",\r\n      })\r\n    ).subscribe({\r\n      next: ({ provider, value }) =&gt; {\r\n        console.log(\"Subscribe:\", { provider, value });\r\n        subscription.unsubscribe();\r\n      },\r\n      error: (error) =&gt; console.warn(error),\r\n    });\r\n};\r\n<\/code><\/pre>\n<h2>\u8bf7\u6ce8\u610f\u3002<\/h2>\n<ul class=\"post-ul\">mock\u3067\u52d5\u4f5c\u3057\u306a\u3044<\/ul>\n<p>\u6211\u73b0\u5728\u9677\u5165\u4e86\u56f0\u5883&#8230;<br \/>\n\u6709\u4eba\u63d0\u5230\u4e86\u5728\u8be5\u95ee\u9898\u4e2d\u6a21\u62df\u65e0\u6cd5\u6b63\u5e38\u8fd0\u884c\u3002\u5c3d\u7ba1\u5df2\u5173\u95ed\u8be5\u95ee\u9898\uff0c\u4f46\u4f3c\u4e4e\u6ca1\u6709\u8fdb\u884c\u4fee\u590d\u3002\u56e0\u6b64\uff0c\u6bcf\u6b21\u90fd\u9700\u8981\u6267\u884ccodgen\u5e76\u63a8\u9001\u66f4\u6539\u3002\u53e6\u5916\uff0c\u6709\u65f6codegen\u65e0\u6cd5\u81ea\u52a8\u751f\u6210\u8ba2\u9605\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u542f\u52a8\u4e00\u6b21\u6a21\u62df\u5373\u53ef\u751f\u6210\u3002 \uff0a\u622a\u81f32021\/03\u3002<\/p>\n<p>\u95ee\u9898\uff1ahttps:\/\/github.com\/aws-amplify\/amplify-cli\/issues\/6026<\/p>\n<h2>\u8bf7\u7528\u4e2d\u6587\u8868\u793a\u53c2\u8003\u3002<\/h2>\n<p>\u53c2\u8003<\/p>\n<p>(\u516c\u5f0f)<br \/>\n&#8211; \u793a\u4f8b<br \/>\n&#8211; \u5b9e\u65f6\u6570\u636e<br \/>\n&#8211; \u8ba2\u9605\u6570\u636e<br \/>\n(\u535a\u5ba2)<br \/>\n&#8211; \u4f7f\u7528AWS AppSync + Amplify\uff0c\u5728Subscription\u4e2d\u6dfb\u52a0\u53c2\u6570\uff0c\u5e76\u5c1d\u8bd5\u4ec5\u63a5\u6536\u90e8\u5206\u901a\u77e5<\/p>\n<p>&#8211; \u5bae\u7530\u570b\u6bc5 &#8211;<br \/>\n\u6211\u5728O:inc.\u516c\u53f8\u4f7f\u7528Amplify\u00d7React\u00d7React Native\u8fdb\u884c\u5f00\u53d1\u3002\u5728\u5927\u5b66\u7684\u7814\u8ba8\u4f1a\u4e0a\uff0c\u6211\u7528Python\u8fdb\u884c\u7edf\u8ba1\u5b66\u7814\u7a76\u3002\u6211\u4f1a\u5206\u4eab\u5728\u5b9e\u4e60\u548c\u7814\u8ba8\u4f1a\u4e0a\u5b66\u5230\u7684\u4fe1\u606f\uff0c\u6240\u4ee5\u8bf7\u52a1\u5fc5\u5173\u6ce8\u6211\u7684\u8d26\u53f7\u5e76\u56de\u5173\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u603b\u7ed3 \u4e3a\u4e86\u5b9e\u65f6\u53cd\u6620\u6570\u636e\uff0c\u6211\u4eec\u4f7f\u7528\u8ba2\u9605\uff08subscription\uff09\u3002\u6211\u4eec\u4e4b\u524d\u662f\u901a\u8fc7@model\u81ea\u52a8\u751f\u6210\u8ba2\u9605\uff0c\u4f46\u662f [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-48027","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 Amplify \u00d7 AppSync \u6765\u5bf9 Subscription \u8fdb\u884c\u8fc7\u6ee4 - 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\" 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