template.yaml

# This is the SAM template that represents the architecture of your serverless application
# https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/serverless-sam-template-basics.html

# The AWSTemplateFormatVersion identifies the capabilities of the template
# https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/format-version-structure.html
AWSTemplateFormatVersion: 2010-09-09
Description: >-
  An example application with PowerTools for TypeScript instrumented. Its purpose is to demonstrate how to use the PowerTools with AWS SAM. The application an API with contains 3 endpoints (get all items, get an item by ids, put an item). Each Lambda function utilises Logger, Metrics, and Tracers.

# Transform section specifies one or more macros that AWS CloudFormation uses to process your template
# https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/transform-section-structure.html
Transform: AWS::Serverless-2016-10-31

# Global configuration that all Functions inherit
# https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/sam-specification-template-anatomy-globals.html
Globals:
  Function:
      Runtime: nodejs16.x
      Architectures:
        - x86_64
      MemorySize: 128
      Timeout: 100

# Resources declares the AWS resources that you want to include in the stack
# https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/resources-section-structure.html
Resources:
  # Each Lambda function is defined by properties:
  # https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlessfunction

  # This is a Lambda function config associated with the source code: get-all-items.js
  getAllItemsFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: src/get-all-items.getAllItemsHandler
      Description: A simple example includes a HTTP get method to get all items from a DynamoDB table.
      Policies:
        # Give Create/Read/Update/Delete Permissions to the SampleTable
        - DynamoDBReadPolicy:
            TableName: !Ref SampleTable
      Tracing: Active
      Environment:
        Variables:
          # Make table name accessible as environment variable from function code during execution
          SAMPLE_TABLE: !Ref SampleTable
          POWERTOOLS_SERVICE_NAME: getAllItems
          POWERTOOLS_METRICS_NAMESPACE: PowertoolsSAMExample
          LOG_LEVEL: Debug
      Events:
        Api:
          Type: Api
          Properties:
            Path: /
            Method: GET
    Metadata: 
      # Manage esbuild properties
      BuildMethod: esbuild
      BuildProperties:
        Minify: true
        Target: "es2020"
        Sourcemap: true,
        EntryPoints: 
        - src/get-all-items.ts

  # This is a Lambda function config associated with the source code: get-by-id.js
  getByIdFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: src/get-by-id.getByIdHandler
      Description: A simple example includes a HTTP get method to get one item by id from a DynamoDB table.
      Policies:
        # Give Create/Read/Update/Delete Permissions to the SampleTable
        - DynamoDBReadPolicy:
            TableName: !Ref SampleTable
      Tracing: Active
      Environment:
        Variables:
          # Make table name accessible as environment variable from function code during execution
          SAMPLE_TABLE: !Ref SampleTable
          POWERTOOLS_SERVICE_NAME: getById
          POWERTOOLS_METRICS_NAMESPACE: PowertoolsSAMExample
          LOG_LEVEL: Debug
      Events:
        Api:
          Type: Api
          Properties:
            Path: /{id}
            Method: GET
    Metadata: 
      # Manage esbuild properties
      BuildMethod: esbuild
      BuildProperties:
        Minify: true
        Target: "es2020"
        Sourcemap: true,
        EntryPoints: 
        - src/get-by-id.ts

  # This is a Lambda function config associated with the source code: put-item.js
  putItemFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: src/put-item.putItemHandler
      Description: A simple example includes a HTTP post method to add one item to a DynamoDB table.
      Policies:
        # Give Create/Read/Update/Delete Permissions to the SampleTable
        - DynamoDBCrudPolicy:
            TableName: !Ref SampleTable
      Tracing: Active
      Environment:
        Variables:
          # Make table name accessible as environment variable from function code during execution
          SAMPLE_TABLE: !Ref SampleTable
          POWERTOOLS_SERVICE_NAME: getById
          POWERTOOLS_METRICS_NAMESPACE: PowertoolsSAMExample
          LOG_LEVEL: Debug
      Events:
        Api:
          Type: Api
          Properties:
            Path: /
            Method: POST
    Metadata: 
      # Manage esbuild properties
      BuildMethod: esbuild
      BuildProperties:
        Minify: true
        Target: "es2020"
        Sourcemap: true,
        EntryPoints: 
        - src/put-item.ts

  # DynamoDB table to store item: {id: <ID>, name: <NAME>}
  SampleTable:
    Type: AWS::Serverless::SimpleTable
    Properties:
      PrimaryKey:
        Name: id
        Type: String

Outputs:
  WebEndpoint:
    Description: "API Gateway endpoint URL for Prod stage"
    Value: !Sub "https://${ServerlessRestApi}.execute-api.${AWS::Region}.amazonaws.com/Prod/"