Chapter 30. AWS Lambda Component Available as of Camel version 2.20 The Lambda component supports create, get, list, delete and invoke AWS Lambda functions. Prerequisites You must have a valid Amazon Web Services developer account, and be signed up to use Amazon Lambda. More information are available at Amazon Lambda . When creating a Lambda function, you need to specify a IAM role which has at least the AWSLambdaBasicExecuteRole policy attached. Warning Lambda is regional service. Unlike S3 bucket, Lambda function created in a given region is not available on other regions. 30.1. URI Format aws-lambda://functionName[?options] You can append query options to the URI in the following format, ?options=value&option2=value&... 30.2. URI Options The AWS Lambda component supports 5 options, which are listed below. Name Description Default Type configuration (advanced) The AWS Lambda default configuration LambdaConfiguration accessKey (producer) Amazon AWS Access Key String secretKey (producer) Amazon AWS Secret Key String region (producer) Amazon AWS Region String resolveProperty Placeholders (advanced) Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders. true boolean The AWS Lambda endpoint is configured using URI syntax: with the following path and query parameters: 30.2.1. Path Parameters (1 parameters): Name Description Default Type function Required Name of the Lambda function. String 30.2.2. Query Parameters (8 parameters): Name Description Default Type operation (producer) Required The operation to perform. It can be listFunctions, getFunction, createFunction, deleteFunction or invokeFunction LambdaOperations region (producer) Amazon AWS Region String awsLambdaClient (advanced) To use a existing configured AwsLambdaClient as client AWSLambda synchronous (advanced) Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported). false boolean proxyHost (proxy) To define a proxy host when instantiating the Lambda client String proxyPort (proxy) To define a proxy port when instantiating the Lambda client Integer accessKey (security) Amazon AWS Access Key String secretKey (security) Amazon AWS Secret Key String 30.3. Spring Boot Auto-Configuration The component supports 13 options, which are listed below. Name Description Default Type camel.component.aws-lambda.access-key Amazon AWS Access Key String camel.component.aws-lambda.configuration.access-key Amazon AWS Access Key String camel.component.aws-lambda.configuration.aws-lambda-client To use a existing configured AwsLambdaClient as client AWSLambda camel.component.aws-lambda.configuration.function Name of the Lambda function. String camel.component.aws-lambda.configuration.operation The operation to perform. It can be listFunctions, getFunction, createFunction, deleteFunction or invokeFunction LambdaOperations camel.component.aws-lambda.configuration.proxy-host To define a proxy host when instantiating the Lambda client String camel.component.aws-lambda.configuration.proxy-port To define a proxy port when instantiating the Lambda client Integer camel.component.aws-lambda.configuration.region Amazon AWS Region String camel.component.aws-lambda.configuration.secret-key Amazon AWS Secret Key String camel.component.aws-lambda.enabled Whether to enable auto configuration of the aws-lambda component. This is enabled by default. Boolean camel.component.aws-lambda.region Amazon AWS Region String camel.component.aws-lambda.resolve-property-placeholders Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders. true Boolean camel.component.aws-lambda.secret-key Amazon AWS Secret Key String Required Lambda component options You have to provide the awsLambdaClient in the Registry or your accessKey and secretKey to access the Amazon Lambda service. 30.4. Usage 30.4.1. Message headers evaluated by the Lambda producer Operation Header Type Description Required All CamelAwsLambdaOperation String The operation we want to perform. Override operation passed as query parameter Yes createFunction CamelAwsLambdaS3Bucket String Amazon S3 bucket name where the .zip file containing your deployment package is stored. This bucket must reside in the same AWS region where you are creating the Lambda function. No createFunction CamelAwsLambdaS3Key String The Amazon S3 object (the deployment package) key name you want to upload. No createFunction CamelAwsLambdaS3ObjectVersion String The Amazon S3 object (the deployment package) version you want to upload. No createFunction CamelAwsLambdaZipFile String The local path of the zip file (the deployment package). Content of zip file can also be put in Message body. No createFunction CamelAwsLambdaRole String The Amazon Resource Name (ARN) of the IAM role that Lambda assumes when it executes your function to access any other Amazon Web Services (AWS) resources. Yes createFunction CamelAwsLambdaRuntime String The runtime environment for the Lambda function you are uploading. (nodejs, nodejs4.3, nodejs6.10, java8, python2.7, python3.6, dotnetcore1.0, odejs4.3-edge) Yes createFunction CamelAwsLambdaHandler String The function within your code that Lambda calls to begin execution. For Node.js, it is the module-name.export value in your function. For Java, it can be package.class-name::handler or package.class-name. Yes createFunction CamelAwsLambdaDescription String The user-provided description. No createFunction CamelAwsLambdaTargetArn String The parent object that contains the target ARN (Amazon Resource Name) of an Amazon SQS queue or Amazon SNS topic. No createFunction CamelAwsLambdaMemorySize Integer The memory size, in MB, you configured for the function. Must be a multiple of 64 MB. No createFunction CamelAwsLambdaKMSKeyArn String The Amazon Resource Name (ARN) of the KMS key used to encrypt your function's environment variables. If not provided, AWS Lambda will use a default service key. No createFunction CamelAwsLambdaPublish Boolean This boolean parameter can be used to request AWS Lambda to create the Lambda function and publish a version as an atomic operation. No createFunction CamelAwsLambdaTimeout Integer The function execution time at which Lambda should terminate the function. The default is 3 seconds. No createFunction CamelAwsLambdaTracingConfig String Your function's tracing settings (Active or PassThrough). No createFunction CamelAwsLambdaEnvironmentVariables Map<String, String> The key-value pairs that represent your environment's configuration settings. No createFunction CamelAwsLambdaEnvironmentTags Map<String, String> The list of tags (key-value pairs) assigned to the new function. No createFunction CamelAwsLambdaSecurityGroupIds List<String> If your Lambda function accesses resources in a VPC, a list of one or more security groups IDs in your VPC. No createFunction CamelAwsLambdaSubnetIds List<String> If your Lambda function accesses resources in a VPC, a list of one or more subnet IDs in your VPC. No 30.5. List of Avalaible Operations listFunctions getFunction, createFunction deleteFunction invokeFunction updateFunction createEventSourceMapping deleteEventSourceMapping listEventSourceMapping 30.6. Example To have a full understanding of how the component works, you may have a look at this integration test 30.7. Dependencies Maven users will need to add the following dependency to their pom.xml. pom.xml <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-aws</artifactId> <version>USD{camel-version}</version> </dependency> where USD{camel-version } must be replaced by the actual version of Camel (2.16 or higher). 30.8. See Also Configuring Camel Component Endpoint Getting Started AWS Component

Commands:
aws-lambda://functionName[?options]
aws-lambda:function
<dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-aws</artifactId> <version>USD{camel-version}</version> </dependency>