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示例2：创建函数和APIG触发器获取静态页面

场景描述

本章节以Python 2.7为例，指导您通过API创建FunctionGraph函数和APIG触发器，并且通过APIG触发器调用API，获取静态页面。

API的调用方法请参见如何调用API。

前提条件

已在API网关服务中创建API分组，并记录API分组的ID和分配的子域名。

总体思路

创建FunctionGraph函数和APIG触发器，并且通过APIG触发器触发API获取静态页面，步骤如下：

  1. 创建函数：创建一个返回的静态页面函数。
  2. 创建触发器：创建APIG触发器。
  3. 通过APIG触发器调用API，获取静态页面。

步骤1：创建一个返回的静态页面函数

URI：POST /v2/{project_id}/fgs/functions

API文档详情请参见：创建函数

  • 请求示例 
    POST  https://{Endpoint}/v2/{project_id}/fgs/functions
{
 "code_filename": "index.zip",
 "code_type": "inline",
 "func_code": {
  "file": "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"
 },
 "func_name": "get_html",
 "handler": "index.handler",
 "memory_size": 256,
 "package": "default",
 "runtime": "Python2.7",
 "timeout": 5
}
  • 响应示例 
    {
 "func_urn": "urn:fss:{project_name}:{project_id}:function:default:get_html:latest",
 "func_name": "get_html",
 "domain_id": "89fexxxd636",
 "namespace": "{project_id}",
 "project_name": "xxx",
 "package": "default",
 "runtime": "Python2.7",
 "timeout": 5,
 "handler": "index.handler",
 "memory_size": 256,
 "cpu": 400,
 "code_type": "inline",
 "code_filename": "index.zip",
 "code_size": 884,
 "digest": "b08fef5e97dd130037978db07f0e9109aa43a191517cd1196bcab822f17dddcf37f7506a15691177962f9803ba6d170a1c87aafb4fa1b9f0d07f9415642b26d2",
 "version": "latest",
 "image_name": "latest-200604105808@we0qo",
 "last_modified": "2020-06-04T10:58:08+08:00",
 "strategy_config": {
  "concurrency": -1
 },
 "StrategyConfig": {},
 "enterprise_project_id": "0"
}

    记录函数的URN，即响应示例中的“func_urn”信息。

步骤2：创建APIG触发器

URI：POST /v2/{project_id}/fgs/triggers/{function_urn}

API文档详情请参见：创建触发器

  • 请求示例 
    POST  https://{Endpoint}/v2/{project_id}/fgs/triggers/{function_urn}
{
 "event_data": {
  "group_id": "a9ad0d5df4d7475c9bc35a7c17d89304",
  "env_id": "DEFAULT_ENVIRONMENT_RELEASE_ID",
  "auth": "NONE",
  "protocol": "HTTP",
  "name": "API_GetHtml",
  "path": "/test",
  "match_mode": "SWA",
  "req_method": "ANY",
  "backend_type": "FUNCTION",
  "sl_domain": "a9ad0d5df4d7475c9bc35a7c17d89304.apig.xxx.xxxapis.com",
  "type": 1,
  "env_name": "RELEASE"
 },
 "event_type_code": "APICreated",
 "trigger_status": "ACTIVE",
 "trigger_type_code": "APIG"
}

    function_urn为步骤1：创建一个返回的静态页面函数中记录的函数URN，group_id为API分组的ID，sl_domain为APIG给API分组分配的子域名。

  • 响应示例 
    {
 "trigger_id": "1b3ec74b86454aa39001a9f89cc70ee2",
 "trigger_type_code": "APIG",
 "trigger_status": "ACTIVE",
 "event_data": {
  "api_id": "cbc698153d1f4265bdd8384b5cf6e581",
  "api_name": "API_GetHtml",
  "auth": "NONE",
  "env_id": "",
  "env_name": "",
  "func_info": {
   "function_urn": "urn:fss:{project_name}:{project_id}:function:default:get_html",
   "invocation_type": "sync",
   "timeout": 5000,
   "version": "latest"
  },
  "group_id": "a9ad0d5df4d7475c9bc35a7c17d89304",
  "group_name": "APIGroup_gethtml",
  "invoke_url": "http://a9ad0d5df4d7475c9bc35a7c17d89304.apig.xxx.xxxapis.com/test",
  "match_mode": "SWA",
  "name": "API_GetHtml",
  "path": "/test",
  "protocol": "HTTP",
  "req_method": "ANY",
  "triggerid": "1b3ec74b86454aa39001a9f89cc70ee2",
  "type": 1
 },
 "last_updated_time": "2020-06-04T17:14:32+08:00",
 "created_time": "2020-06-04T17:14:32+08:00"
}

    记录“invoke_url”的值。

步骤3：通过APIG触发器调用API，获取静态页面

在浏览器输入“invoke_url”的值，调用API，获取静态页面。

图1 调用API
父主题： 应用示例

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