serverless-cf-template.yml

# Copyright [2024] [Phil Chen]

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#    http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and

# Things to note or change:
# Change your S3Bucket to the name of your bucket where you put the lambda.zip
# Change the role name in two places from "role/serverless" to the role name you created
# To test use the URL provided in the Outputs under TestURL in a browser

AWSTemplateFormatVersion: "2010-09-09"
Description: Serverless Application that outputs JSON.

Resources:
  endpointApiPermissionProd:
    Type: 'AWS::Lambda::Permission'
    Properties:
      Action: 'lambda:invokeFunction'
      Principal: apigateway.amazonaws.com
      FunctionName: !Ref endpoint
      SourceArn: !Sub
        - >-
          arn:aws:execute-api:${AWS::Region}:${AWS::AccountId}:${__ApiId__}/${__Stage__}/POST/endpoint_python
        - __Stage__: Prod
          __ApiId__: !Ref ServerlessRestApi
  ServerlessRestApiProdStage:
    Type: 'AWS::ApiGateway::Stage'
    Properties:
      DeploymentId: !Ref ServerlessRestApiDeployment00
      RestApiId: !Ref ServerlessRestApi
      StageName: Prod
  ServerlessRestApiDeployment00:
    Type: 'AWS::ApiGateway::Deployment'
    Properties:
      RestApiId: !Ref ServerlessRestApi
      Description: 'RestApi deployment id: 00'
      StageName: Stage
  endpoint:
    Type: 'AWS::Lambda::Function'
    Properties:
      Code:
        S3Bucket: 'S3_BUCKET_YOUR_APP_ZIP_IS_LOCATED'
        S3Key: 'lambda.zip'
      Description: 'aws-serverless-cfn-template'
      MemorySize: '128'
      Handler: lambda.endpoint
      Role: !Sub 'arn:aws:iam::${AWS::AccountId}:role/serverless'
      Timeout: '30'
      Runtime: 'python3.11'
  ServerlessRestApi:
    Type: 'AWS::ApiGateway::RestApi'
    Properties:
      Body:
        info:
          version: '1.0'
          title: !Ref 'AWS::StackName'
        paths:
          /endpoint_python:
            get:
              consumes:
                - application/json
              produces:
                - application/json
              responses:
                '200':
                  description: 200 response
                  headers:
                    Content-Type:
                      type: string
              x-amazon-apigateway-integration:
                httpMethod: POST
                credentials: !Sub 'arn:aws:iam::${AWS::AccountId}:role/serverless'
                type: aws
                uri: !Sub >-
                  arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${endpoint.Arn}/invocations
                responses: {
                  "default": {
                    "statusCode": "200",
                    "responseTemplates": {
                      application/json: ""
                    }
                  }
                }
                passthroughBehavior: "when_no_templates"
        swagger: '2.0'
  endpointApiPermissionTest:
    Type: 'AWS::Lambda::Permission'
    Properties:
      Action: 'lambda:invokeFunction'
      Principal: apigateway.amazonaws.com
      FunctionName: !Ref endpoint
      SourceArn: !Sub
        - >-
          arn:aws:execute-api:${AWS::Region}:${AWS::AccountId}:${__ApiId__}/${__Stage__}/POST/endpoint_python
        - __Stage__: '*'
          __ApiId__: !Ref ServerlessRestApi
Outputs:
 TestURL:
  Description: Test your serverless app with this url in a browser.
  Value: !Join [ "", [ "https://", !Ref "ServerlessRestApi", ".execute-api.", !Sub "${AWS::Region}", ".amazonaws.com/Prod/endpoint_python"]]