Function

Provides an Lambda Function

Examples

Create a Lambda Function

exports.createResources = () => [
  {
    type: "Role",
    group: "IAM",
    name: "lambda-role",
    properties: ({}) => ({
      Path: "/",
      AssumeRolePolicyDocument: {
        Version: "2012-10-17",
        Statement: [
          {
            Sid: "",
            Effect: "Allow",
            Principal: {
              Service: "lambda.amazonaws.com",
            },
            Action: "sts:AssumeRole",
          },
        ],
      },
    }),
    dependencies: () => ({
      policies: ["lambda-policy"],
    }),
  },
  {
    type: "Policy",
    group: "IAM",
    name: "lambda-policy",
    properties: ({}) => ({
      PolicyDocument: {
        Version: "2012-10-17",
        Statement: [
          {
            Action: ["logs:*"],
            Effect: "Allow",
            Resource: "*",
          },
          {
            Action: ["sqs:*"],
            Effect: "Allow",
            Resource: "*",
          },
        ],
      },
      Path: "/",
      Description: "Allow logs",
    }),
  },
  {
    type: "Function",
    group: "Lambda",
    properties: ({}) => ({
      Configuration: {
        FunctionName: "lambda-hello-world",
        Handler: "helloworld.handler",
        Runtime: "nodejs14.x",
      },
    }),
    dependencies: () => ({
      role: "lambda-role",
    }),
  },
];

Source Code Examples

• ApiGatewayV2 http-lambda
• hello world lambda
• lambda url
• lambda sqs
• AppSync graphql
• CloudWatch Subscription Filter
• EFS simple
• Firehose stream
• Kinesis stream
• serverless-patterns apigw-http-api-eventbridge
• serverless-patterns apigw-websocket-api-lambda
• serverless-patterns cdk-lambda-appsync
• serverless-patterns cdk-vpc-lambda-sfn
• serverless-patterns cognito-httpapi
• serverless-patterns lambda
• serverless-patterns lambda-aurora-serverless
• serverless-patterns lambda-cloudwatch
• serverless-patterns lambda-dynamodb
• serverless-patterns lambda-layer-terraform
• serverless-patterns lambda-s3
• serverless-patterns lambda-ssm-parameter
• serverless-patterns sfn-apigw
• serverless-patterns sns-lambda
• serverless-patterns sqs-lambda-terraform-python
• serverless-patterns step-functions-lambda-terraform
• serverless-patterns systems-manager-automation-to-lambda
• serverless-patterns ta-eventbridge-lambda-s3
• lambda triggered by a write to an S3 Bucket

Properties

• CreateFunctionCommandInput

Dependencies

• AppSync Graphql
• DynamoDB Table
• EFS MountTarget
• Iam Role
• KMS Key
• Layer
• RDS Cluster
• SecretsManager Secret

Used By

• ApiGateway Integration
• ApplicationAutoScaling Target
• CloudWatchLogs Subscription Filter
• S3 Bucket
• StepFunctions StateMachine

List

The list of functions can be displayed and filtered with the type Function:

gc list -t Function

┌──────────────────────────────────────────────────────────────────┐
│ 2 Lambda::Function from aws                                      │
├──────────────────────────────────────────────────────────────────┤
│ name: LambdaLayerXRayStackStack-BucketNotificationsHandl-1XcDZ1… │
│ managedByUs: Yes                                                 │
│ live:                                                            │
│   Configuration:                                                 │
│     Architectures:                                               │
│       - "x86_64"                                                 │
│     CodeSha256: hzxBwXE8vF5htCF3abiYzTqjRnM2KRxbveRsojrrXhs=     │
│     CodeSize: 1337                                               │
│     Description: AWS CloudFormation handler for "Custom::S3Buck… │
│     EphemeralStorage:                                            │
│       Size: 512                                                  │
│     FunctionArn: arn:aws:lambda:us-east-1:840541460064:function… │
│     FunctionName: LambdaLayerXRayStackStack-BucketNotifications… │
│     Handler: index.handler                                       │
│     LastModified: 2022-04-17T18:32:29.881+0000                   │
│     LastUpdateStatus: Successful                                 │
│     MemorySize: 128                                              │
│     PackageType: Zip                                             │
│     RevisionId: fee4d397-44a6-4dfe-b070-9b0c8204d012             │
│     Role: arn:aws:iam::840541460064:role/LambdaLayerXRayStackSt… │
│     Runtime: python3.7                                           │
│     State: Active                                                │
│     Timeout: 300                                                 │
│     TracingConfig:                                               │
│       Mode: PassThrough                                          │
│     Version: $LATEST                                             │
│   Code:                                                          │
│     Location: https://prod-04-2014-tasks.s3.us-east-1.amazonaws… │
│     RepositoryType: S3                                           │
│   Tags:                                                          │
│     aws:cloudformation:stack-name: LambdaLayerXRayStackStack     │
│     gc-project-name: xray-lambdalayers-cdk-python                │
│     aws:cloudformation:stack-id: arn:aws:cloudformation:us-east… │
│     aws:cloudformation:logical-id: BucketNotificationsHandler05… │
│     gc-managed-by: grucloud                                      │
│     gc-stage: dev                                                │
│     gc-created-by-provider: aws                                  │
│     Name: LambdaLayerXRayStackStack-BucketNotificationsHandl-1X… │
│                                                                  │
├──────────────────────────────────────────────────────────────────┤