如何在云形成模板中连接Lambda和API网关?

问题描述

我正在学习使用AWS Lambda和api网关。我从sam cli开始,初始化了一个hello world模板(下面的代码)。当通过-sam package ...命令生成deploy.yaml文件并且通过云形成生成堆栈时,看起来这已经生成了api端点。我想用资源,方法,使用计划,API密钥等创建一个api网关。因此我开始将以下资源添加到原始模板中。如何使用lambda函数连接api网关。

ApiGatewayRestApi:
    Type: AWS::ApiGateway::RestApi
    Properties:
      ApiKeySourceType: HEADER
      Description: An API Gateway with a Lambda Integration
      EndpointConfiguration:
        Types:
          - EDGE
      Name: lambda-api

  ApiGatewayResource:
    Type: AWS::ApiGateway::Resource
    Properties:
      ParentId: !GetAtt ApiGatewayRestApi.RootResourceId
      PathPart: 'lambda'
      RestApiId: !Ref ApiGatewayRestApi

  ApiGatewayMethod:
    Type: AWS::ApiGateway::Method
    Properties:
      ApiKeyRequired: false
      AuthorizationType: NONE
      HttpMethod: GET
      ResourceId: !Ref ApiGatewayResource
      RestApiId: !Ref ApiGatewayRestApi

原始模板

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  simple-node-api
  Sample SAM Template for simple-node-api

Globals:
  Function:
    Timeout: 3

Resources:
  HelloWorldfunction:
    Type: AWS::Serverless::Function
    Properties:
      CodeUri: hello-world/
      Handler: app.lambdaHandler
      Runtime: python3.7
      Events:
        HelloWorld:
          Type: Api
          Properties:
            Path: /{proxy+}
            Method: get

Outputs:
  HelloWorldApi:
    Description: API Gateway endpoint URL for Prod stage for Hello World function
    Value:
      Fn::Sub: https://${ServerlessHttpApi}.execute-api.${AWS::Region}.amazonaws.com/Prod/hello/"
  HelloWorldfunction:
    Description: Express Backend Lambda Function ARN
    Value: !Sub HelloWorldfunction.Arn
  HelloWorldFunctionIamRole:
    Description: Implicit IAM Role created for Hello World function
    Value: !Sub HelloWorldFunctionRole.Arn

解决方法

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