serverless.yml

service: MV-${env:REALM}-CloudFront-Bot

plugins:
  - serverless-log-forwarding
  - serverless-plugin-aws-alerts

provider:
  name: aws
  runtime: python3.6
  stage: ${env:ENV}
  memorySize: 128
  versionFunctions: false
  deploymentBucket:
    name: amaysim-serverless-deployments-${env:AWS_ACCOUNT_ID}-${env:AWS_REGION}
  timeout: 60
  region: ${env:AWS_REGION}
  variableSyntax: "\\${(?!AWS::)((?:self|env):[ :a-zA-Z0-9._,\\-\\/\\(\\)]+?)}"
  iamRoleStatements:
    - Effect: Allow
      Action:
        - lambda:InvokeFunction
        - lambda:InvokeAsync
      Resource:
        Fn::Sub: "arn:aws:lambda:${AWS::Region}:${AWS::AccountId}:function:${self:service}-${env:ENV}-invalidate"
  stackTags:
    FRAMEWORK: serverless
  environment:
    ENV: ${env:ENV}
    LOGLEVEL: ${env:LOGLEVEL}
    REALM: ${env:REALM}
    BOT_AWS_ROLE: ${env:BOT_AWS_ROLE}
    BOT_AWS_ACCOUNTS: ${env:BOT_AWS_ACCOUNTS}
    INVALIDATE_HANDLER: ${self:service}-${env:ENV}-invalidate

package:
  artifact: package/package.zip

custom:
  logForwarding:
    destinationARN: {"Fn::ImportValue": "${env:SUMOLOGIC_LAMBDA_ARN_EXPORT_NAME}"}
  alerts:
    dashboards: true
    topics:
      ok: ${env:OPS_GENIE_MAJOR_SNS_ARN}
      alarm: ${env:OPS_GENIE_MAJOR_SNS_ARN}
      insufficientData: ${env:OPS_GENIE_MAJOR_SNS_ARN}
    definitions:
      functionErrors:
        threshold: 1
        period: 900
      functionDuration:
        threshold: 60000
        statistic: 'p95'
        period: 900
    alarms:
      - functionErrors
      - functionThrottles
      - functionInvocations
      - functionDuration

functions:
  invalidate:
    handler: slack_cloudfront_bot.invalidate
  respond:
    handler: slack_cloudfront_bot.respond
    events:
      - http: POST respond

resources:
  Resources:
    PolicySlackCloudFrontBot:
      Type: AWS::IAM::Policy
      Properties:
        Roles:
          - Ref: IamRoleLambdaExecution
        PolicyName: AllowSwitchRoleToSlackCloudFrontBot
        PolicyDocument:
          Version: "2012-10-17"
          Statement:
            - Sid: AllowSwitchRoleToSlackCloudFrontBot
              Effect: Allow
              Action:
                - sts:AssumeRole
              Resource:
                - arn:aws:iam::*:role/SlackCloudFrontBot
    DomainName:
      Type: "AWS::ApiGateway::DomainName"
      Properties:
        CertificateArn: ${env:AWS_ACM_CERTIFICATE}
        DomainName: ${env:DOMAIN_NAME}
    BasePathMapping:
      Type: "AWS::ApiGateway::BasePathMapping"
      Properties:
        BasePath: "cloudfront-bot"
        DomainName:
          Ref: DomainName
        RestApiId: { "Ref": "ApiGatewayRestApi" }
        Stage: ${env:ENV}
    RecordSet:
      Type: AWS::Route53::RecordSet
      Properties:
        HostedZoneName: ${env:AWS_HOSTED_ZONE}.
        Name: ${env:DOMAIN_NAME}
        Type: A
        AliasTarget:
          HostedZoneId: "Z2FDTNDATAQYW2"
          DNSName:
            Fn::GetAtt: [ "DomainName", "DistributionDomainName" ]
    RecordSetAAAA:
      Type: AWS::Route53::RecordSet
      Properties:
        HostedZoneName: ${env:AWS_HOSTED_ZONE}.
        Name: ${env:DOMAIN_NAME}
        Type: AAAA
        AliasTarget:
          HostedZoneId: "Z2FDTNDATAQYW2"
          DNSName:
            Fn::GetAtt: [ "DomainName", "DistributionDomainName" ]
  Outputs:
    LambdaUrl:
      Value: "https://${env:DOMAIN_NAME}"
    CloudFrontDomainName:
      Value:
        Fn::GetAtt: [ 'DomainName', 'DistributionDomainName' ]
    LambdaRoleArn:
      Value:
        Fn::GetAtt: [ 'IamRoleLambdaExecution', 'Arn' ]
    LambdaRole:
      Value:
        Ref: 'IamRoleLambdaExecution'