Updating Lambda runtimes for resource types and hooks - Extension development for CloudFormation
Upgrading the Java runtimeUpgrading the Go runtimeUpgrading the Python runtimeUpgrading the Node.js runtime
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Updating Lambda runtimes for resource types and hooks

Amazon CloudFormation resource types and hooks are developed using CloudFormation CLI language plug-ins available for Go, Java, Python, and TypeScript. The language plug-ins eventually need to be updated in order to maintain compatibility.

You can update your runtime by modifying parameters in the .rpdk-config and template.yml files. These files are found in your resource provider or hooks package. We recommend that your CloudFormation resource types and hooks use supported Lambda runtimes.

Upgrading the Java runtime

Steps to upgrade to Java 17

  1. In the .rpdk-config file, change the runtime parameter to java17.

    The following is an example .rpdk-config using the java17 runtime:

    {
    "typeName": "AWS::DirectoryService::SimpleAD",
    "language": "java",
    "runtime": "java17",
    "entrypoint": "software.amazon.directoryservice.simplead.HandlerWrapper::handleRequest",
    "testEntrypoint": "software.amazon.directoryservice.simplead.HandlerWrapper::testEntrypoint",
    "settings": {
        "namespace": [
            "software",
            "amazon",
            "directoryservice",
            "simplead"
        ],
        "protocolVersion": "2.0.0"
    }
}

  2. In the template.yml file:

    • In TypeFunction and TestEntrypoint, change the Runtime parameters to java17.

    The following is an example template.yml file using the java17 runtime:

    AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: AWS SAM template for the AWS::DirectoryService::SimpleAD resource type

Globals:
  Function:
    Timeout: 180  # docker start-up times can be long for SAM CLI
    MemorySize: 1024

Resources:
  TypeFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: software.amazon.directoryservice.simplead.HandlerWrapper::handleRequest
      Runtime: java17
      CodeUri: ./target/aws-directoryservice-simplead-handler-1.0-SNAPSHOT.jar

  TestEntrypoint:
    Type: AWS::Serverless::Function
    Properties:
      Handler: software.amazon.directoryservice.simplead.HandlerWrapper::testEntrypoint
      Runtime: java17
      CodeUri: ./target/aws-directoryservice-simplead-handler-1.0-SNAPSHOT.jar

Upgrading the Go runtime

Steps to upgrade to provided.al2

  1. In the .rpdk-config file:

    • Change the runtime parameter to porovided.al2.

    • Change entrypoint and testEntrypoint paramters to bootstrap.

    The following is an example .rpdk-config file using the provided.al2 runtime:

    {
    "typeName": "Example::GitHub::Repo",
    "language": "go",
    "runtime": "provided.al2",
    "entrypoint": "bootstrap",
    "testEntrypoint": "bootstrap",
    "settings": {
        "import_path": "github.com/aws-cloudformation/cloudformation-cli-go-plugin/examples/github-repo",
        "protocolVersion": "2.0.0",
        "pluginVersion": "2.0.0"
    }
}

  2. In the template.yml file:

    • In TypeFunction and TestEntrypoint, change the Runtime parameters to provided.al2.

    • In TypeFunction and TestEntrypoint, change the Handler parameters to bootstrap.

    • In TypeFunction and TestEntrypoint, add x86_64 to the Architecture parameter.

    The following is an example template.yml file using the provided.al2 runtime:

    AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: AWS SAM template for the Example::GitHub::Repo resource type

Globals:
  Function:
    Timeout: 60  # docker start-up times can be long for SAM CLI

Resources:
  TypeFunction:
    Type: AWS::Serverless::Function
    Metadata:
      BuildMethod: go1.x
    Properties:
      Handler: bootstrap
      Runtime: provided.al2
      Architectures:
        - x86_64
      CodeUri: bin/
      # Uncomment to test with AWS resources
      # Environment:
      #   Variables:
      #     AWS_FORCE_INTEGRATIONS: "true"

  TestEntrypoint:
    Type: AWS::Serverless::Function
    Metadata:
      BuildMethod: go1.x
    Properties:
      Handler: bootstrap
      Runtime: provided.al2
      Architectures:
        - x86_64
      CodeUri: bin/

Upgrading the Python runtime

Steps to upgrade to Python 3.11

  1. In the .rpdk-config file:

    • Change the runtime parameter to python3.11.

    • Change the language parameter to python311.

    The following is an example .rpdk-config file using the python3.11 runtime:

    {
    "artifact_type": "RESOURCE",
    "typeName": "AWS::EC2::Instance",
    "language": "python311",
    "runtime": "python3.11",
    "entrypoint": "aws_ec2_instance.handlers.resource",
    "testEntrypoint": "aws_ec2_instance.handlers.test_entrypoint",
    "settings": {
        "version": false,
        "subparser_name": null,
        "verbose": 0,
        "force": false,
        "type_name": null,
        "artifact_type": null,
        "endpoint_url": null,
        "region": null,
        "target_schemas": [],
        "profile": null,
        "use_docker": true,
        "no_docker": false,
        "protocolVersion": "2.0.0"
    }
}

  2. In the template.yml file:

    • In TypeFunction and TestEntrypoint, change the Runtime parameters to python3.11.

    The following is an example template.yml file using the python3.11 runtime:

    AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: AWS SAM template for the AWS::EC2::Instance resource type

Globals:
  Function:
    Timeout: 180  # docker start-up times can be long for SAM CLI
    MemorySize: 256

Resources:
  TypeFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: aws_ec2_instance.handlers.resource
      Runtime: python3.11
      CodeUri: build/

  TestEntrypoint:
    Type: AWS::Serverless::Function
    Properties:
      Handler: aws_ec2_instance.handlers.test_entrypoint
      Runtime: python3.11
      CodeUri: build/

Upgrading the Node.js runtime

Steps to upgrade to Node.js 18

  1. In the .rpdk-config file, change the runtime parameter to nodejs18.x.

    {
    "artifact_type": "RESOURCE",
    "typeName": "Dynatrace::Environment::Metric",
    "language": "typescript",
    "runtime": "nodejs18.x",
    "entrypoint": "dist/Dynatrace-Environment-Metric/src/handlers.entrypoint",
    "testEntrypoint": "dist/Dynatrace-Environment-Metric/src/handlers.testEntrypoint",
    "settings": {
        "version": false,
        "subparser_name": null,
        "verbose": 0,
        "force": false,
        "type_name": null,
        "artifact_type": null,
        "endpoint_url": null,
        "region": null,
        "target_schemas": [],
        "useDocker": false,
        "protocolVersion": "2.0.0"
    },
    "contractSettings":{
        "typeConfiguration": {
            "configuration": {
                "DynatraceAccess": {
                    "Token": "{{resolve:ssm-secure:/cfn/dynatrace/token:1}}",
                    "Endpoint": "{{resolve:ssm-secure:/cfn/dynatrace/endpoint:1}}"
                }
            },
            "configurationAlias": "default"
        }
    }
}

  2. In the template.yml file:

    • In TestEntrypoint and TypeFunction, change the Runtime parameters to nodejs18.x.

    The following is an example template.yml file using the nodejs18.x runtime:

    AWSTemplateFormatVersion: "2010-09-09"
Transform: AWS::Serverless-2016-10-31
Description: AWS SAM template for the Dynatrace::Environment::Metric resource type

Globals:
  Function:
    Timeout: 180  # docker start-up times can be long for SAM CLI
    MemorySize: 256

Resources:
  TestEntrypoint:
    Type: AWS::Serverless::Function
    Properties:
      Handler: dist/Dynatrace-Environment-Metric/src/handlers.testEntrypoint
      Runtime: nodejs18.x
      CodeUri: ./

  TypeFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: dist/Dynatrace-Environment-Metric/src/handlers.entrypoint
      Runtime: nodejs18.x
      CodeUri: ./