AWS Lambda
Since Camel 2.20
Only producer is supported
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 is available at AWS 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.
URI Format
aws-lambda://functionName[?options]
You can append query options to the URI in the following format, ?options=value&option2=value&…
URI Options
The AWS Lambda component supports 12 options, which are listed below.
Name | Description | Default | Type |
---|---|---|---|
autoDiscoverClient (common) |
Setting the autoDiscoverClient mechanism, if true, the component will look for a client instance in the registry automatically otherwise it will skip that checking. |
true |
boolean |
configuration (producer) |
The AWS Lambda default configuration |
LambdaConfiguration |
|
lazyStartProducer (producer) |
Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing. |
false |
boolean |
operation (producer) |
The operation to perform. It can be listFunctions, getFunction, createFunction, deleteFunction or invokeFunction. There are 18 enums and the value can be one of: listFunctions, getFunction, createAlias, deleteAlias, getAlias, listAliases, createFunction, deleteFunction, invokeFunction, updateFunction, createEventSourceMapping, deleteEventSourceMapping, listEventSourceMapping, listTags, tagResource, untagResource, publishVersion, listVersions |
invokeFunction |
LambdaOperations |
region (producer) |
Amazon AWS Region. When using this parameter, the configuration will expect the capitalized name of the region (for example AP_EAST_1) You’ll need to use the name Regions.EU_WEST_1.name() |
String |
|
autowiredEnabled (advanced) |
Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc. |
true |
boolean |
awsLambdaClient (advanced) |
To use a existing configured AwsLambdaClient as client |
AWSLambda |
|
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 |
|
proxyProtocol (proxy) |
To define a proxy protocol when instantiating the Lambda client. There are 2 enums and the value can be one of: HTTP, HTTPS |
HTTPS |
Protocol |
accessKey (security) |
Amazon AWS Access Key |
String |
|
secretKey (security) |
Amazon AWS Secret Key |
String |
The AWS Lambda endpoint is configured using URI syntax:
aws-lambda:function
with the following path and query parameters:
Path Parameters (1 parameters):
Name | Description | Default | Type |
---|---|---|---|
function |
Required Name of the Lambda function. |
String |
Query Parameters (11 parameters):
Name | Description | Default | Type |
---|---|---|---|
autoDiscoverClient (common) |
Setting the autoDiscoverClient mechanism, if true, the component will look for a client instance in the registry automatically otherwise it will skip that checking. |
true |
boolean |
lazyStartProducer (producer) |
Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing. |
false |
boolean |
operation (producer) |
The operation to perform. It can be listFunctions, getFunction, createFunction, deleteFunction or invokeFunction. There are 18 enums and the value can be one of: listFunctions, getFunction, createAlias, deleteAlias, getAlias, listAliases, createFunction, deleteFunction, invokeFunction, updateFunction, createEventSourceMapping, deleteEventSourceMapping, listEventSourceMapping, listTags, tagResource, untagResource, publishVersion, listVersions |
invokeFunction |
LambdaOperations |
region (producer) |
Amazon AWS Region. When using this parameter, the configuration will expect the capitalized name of the region (for example AP_EAST_1) You’ll need to use the name Regions.EU_WEST_1.name() |
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 |
|
proxyProtocol (proxy) |
To define a proxy protocol when instantiating the Lambda client. There are 2 enums and the value can be one of: HTTP, HTTPS |
HTTPS |
Protocol |
accessKey (security) |
Amazon AWS Access Key |
String |
|
secretKey (security) |
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.
Usage
Message headers evaluated by the Lambda producer
Operation | Header | Type | Description | Required |
---|---|---|---|---|
All |
|
|
The operation we want to perform. Override operation passed as query parameter |
Yes |
createFunction |
|
|
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 |
|
|
The Amazon S3 object (the deployment package) key name you want to upload. |
No |
createFunction |
|
String |
The Amazon S3 object (the deployment package) version you want to upload. |
No |
createFunction |
|
|
The local path of the zip file (the deployment package). Content of zip file can also be put in Message body. |
No |
createFunction |
|
|
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 |
|
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 |
|
|
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 |
|
|
The user-provided description. |
No |
createFunction |
|
|
The parent object that contains the target ARN (Amazon Resource Name) of an Amazon SQS queue or Amazon SNS topic. |
No |
createFunction |
|
|
The memory size, in MB, you configured for the function. Must be a multiple of 64 MB. |
No |
createFunction |
|
|
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 |
|
|
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 |
|
|
The function execution time at which Lambda should terminate the function. The default is 3 seconds. |
No |
createFunction |
|
|
Your function’s tracing settings (Active or PassThrough). |
No |
createFunction |
|
|
The key-value pairs that represent your environment’s configuration settings. |
No |
createFunction |
|
|
The list of tags (key-value pairs) assigned to the new function. |
No |
createFunction |
|
|
If your Lambda function accesses resources in a VPC, a list of one or more security groups IDs in your VPC. |
No |
createFunction |
|
|
If your Lambda function accesses resources in a VPC, a list of one or more subnet IDs in your VPC. |
No |
createAlias |
|
|
The function version to set in the alias |
Yes |
createAlias |
|
|
The function name to set in the alias |
Yes |
createAlias |
|
|
The function description to set in the alias |
No |
deleteAlias |
|
|
The function name of the alias |
Yes |
getAlias |
|
|
The function name of the alias |
Yes |
listAliases |
|
|
The function version to set in the alias |
Yes |
List of Avalaible Operations
-
listFunctions
-
getFunction
-
createFunction
-
deleteFunction
-
invokeFunction
-
updateFunction
-
createEventSourceMapping
-
deleteEventSourceMapping
-
listEventSourceMapping
-
listTags
-
tagResource
-
untagResource
-
publishVersion
-
listVersions
-
createAlias
-
deleteAlias
-
getAlias
-
listAliases
Example
To have a full understanding of how the component works, you may have a look at this integration test
Automatic detection of AmazonLambda client in registry
The component is capable of detecting the presence of an AmazonLambda bean into the registry. If it’s the only instance of that type it will be used as client and you won’t have to define it as uri parameter. This may be really useful for smarter configuration of the endpoint.
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-lambda</artifactId>
<version>${camel-version}</version>
</dependency>
where ${camel-version}
must be replaced by the actual version of Camel.
Spring Boot Auto-Configuration
When using aws-lambda with Spring Boot make sure to use the following Maven dependency to have support for auto configuration:
<dependency>
<groupId>org.apache.camel.springboot</groupId>
<artifactId>camel-aws-lambda-starter</artifactId>
<version>x.x.x</version>
<!-- use the same version as your Camel core version -->
</dependency>
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.auto-discover-client |
Setting the autoDiscoverClient mechanism, if true, the component will look for a client instance in the registry automatically otherwise it will skip that checking. |
true |
Boolean |
camel.component.aws-lambda.autowired-enabled |
Whether autowiring is enabled. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc. |
true |
Boolean |
camel.component.aws-lambda.aws-lambda-client |
To use a existing configured AwsLambdaClient as client. The option is a com.amazonaws.services.lambda.AWSLambda type. |
AWSLambda |
|
camel.component.aws-lambda.configuration |
The AWS Lambda default configuration. The option is a org.apache.camel.component.aws.lambda.LambdaConfiguration type. |
LambdaConfiguration |
|
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.lazy-start-producer |
Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing. |
false |
Boolean |
camel.component.aws-lambda.operation |
The operation to perform. It can be listFunctions, getFunction, createFunction, deleteFunction or invokeFunction |
LambdaOperations |
|
camel.component.aws-lambda.proxy-host |
To define a proxy host when instantiating the Lambda client |
String |
|
camel.component.aws-lambda.proxy-port |
To define a proxy port when instantiating the Lambda client |
Integer |
|
camel.component.aws-lambda.proxy-protocol |
To define a proxy protocol when instantiating the Lambda client |
Protocol |
|
camel.component.aws-lambda.region |
Amazon AWS Region. When using this parameter, the configuration will expect the capitalized name of the region (for example AP_EAST_1) You’ll need to use the name Regions.EU_WEST_1.name() |
String |
|
camel.component.aws-lambda.secret-key |
Amazon AWS Secret Key |
String |