template.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: 'AWS::Serverless-2016-10-31'

Parameters:
  SecurityGroupIds:
    Type: List<AWS::EC2::SecurityGroup::Id>
    Description: Security Group IDs that Lambda will use
  VpcSubnetIds:
    Type: List<AWS::EC2::Subnet::Id>
    Description: VPC Subnet IDs that Lambda will use (min 2 for HA)
  RedisHost:
    Type: String
    Description: Redis host name

Resources:
  SidekiqWebFunction:
    Type: 'AWS::Serverless::Function'
    Properties:
      FunctionName: SidekiqWeb
      Handler: lambda.handler
      Runtime: ruby2.5
      Policies:
        - AWSLambdaENIManagementAccess
      CodeUri: "./"
      MemorySize: 128
      Timeout: 30
      VpcConfig:
        SubnetIds: !Ref VpcSubnetIds
        SecurityGroupIds: !Ref SecurityGroupIds
      Events:
        SidekiqWebApi:
            Type: Api
            Properties:
                Path: /
                Method: ANY
                RestApiId: !Ref SidekiqWebAPI
      Environment:
        Variables:
          REDIS_HOST: !Ref RedisHost
  SidekiqWebAPI:
    Type: AWS::Serverless::Api
    Properties:
      Name: SidekiqWebAPI
      StageName: Prod
      DefinitionBody:
        swagger: '2.0'
        basePath: '/Prod'
        info:
          title: !Ref AWS::StackName
        paths:
          /{proxy+}:
            x-amazon-apigateway-any-method:
              responses: {}
              x-amazon-apigateway-integration:
                uri:
                  !Sub 'arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${SidekiqWebFunction.Arn}/invocations'
                passthroughBehavior: "when_no_match"
                httpMethod: POST
                type: "aws_proxy"
          /:
            get:
              responses: {}
              x-amazon-apigateway-integration:
                uri:
                  !Sub 'arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${SidekiqWebFunction.Arn}/invocations'
                passthroughBehavior: "when_no_match"
                httpMethod: POST
                type: "aws_proxy"
  ConfigLambdaPermission:
    Type: "AWS::Lambda::Permission"
    DependsOn:
    - SidekiqWebFunction
    Properties:
      Action: lambda:InvokeFunction
      FunctionName: !Ref SidekiqWebFunction
      Principal: apigateway.amazonaws.com
Outputs:
  SidekiqWebUrl:
    Description: App endpoint URL
    Value: !Sub "https://${SidekiqWebAPI}.execute-api.${AWS::Region}.amazonaws.com/Prod/"