serverless.yaml

AWSTemplateFormatVersion: 2010-09-09

Parameters:
  ServiceName:
    Default: pdf-printer
    Type: String
    AllowedValues:
      - pdf-printer

Resources:
  RestApi:
    Type: AWS::ApiGateway::RestApi
    Properties:
      Name: PDF Printer Api
      FailOnWarnings: true
      Body:
        swagger: 2.0
        info:
          version: 1.0.0
          title: PDF Printer Api
        basePath: /
        paths:
          /print:
            post:
              description: Accepts html and returns it as a pdf
              produces:
                - application/pdf;base64
              consumes:
                - application/json
              x-amazon-apigateway-integration:
                uri: !Sub "arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${PrinterLambda.Arn}/invocations"
                responses:
                  default:
                    statusCode: 500
                httpMethod: POST
                type: aws_proxy
                passthroughBehavior: when_no_match
      Tags:
        - Key: service-name
          Value: !Ref ServiceName

  ApiDeployment:
    Type: AWS::ApiGateway::Deployment
    Properties:
      RestApiId: !Ref RestApi
      StageName: v1

  PrinterLambdaPermission:
    Type: AWS::Lambda::Permission
    Properties:
      Action: lambda:invokeFunction
      FunctionName: !GetAtt PrinterLambda.Arn
      Principal: apigateway.amazonaws.com
      SourceArn: !Sub "arn:aws:execute-api:${AWS::Region}:${AWS::AccountId}:${RestApi}/*"

  PrinterLambda:
    Type: AWS::Lambda::Function
    Properties:
      Handler: src/pdfprinter.handler
      Runtime: nodejs12.x
      Role: !GetAtt LambdaRole.Arn
      MemorySize: 2048
      Timeout: 60
      Tags:
        - Key: service-name
          Value: !Ref ServiceName
        - Key: method-name
          Value: PrinterLambda

  LambdaRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Version: 2012-10-17
        Statement:
          - Effect: Allow
            Principal:
              Service:
                - lambda.amazonaws.com
            Action:
              - sts:AssumeRole
      Path: /
      ManagedPolicyArns:
        - arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole