com.amazonaws.services.lambda

Class AWSLambdaClient

java.lang.Object

com.amazonaws.AmazonWebServiceClient

com.amazonaws.services.lambda.AWSLambdaClient

All Implemented Interfaces:

AWSLambda

public class AWSLambdaClient
extends AmazonWebServiceClient
implements AWSLambda

Client for accessing AWS Lambda. All service calls made using this client are blocking, and will not return until the service call completes.

AWS Lambda

Overview

This is the AWS Lambda API Reference. The AWS Lambda Developer Guide provides additional information. For the service overview, see What is AWS Lambda, and for information about how the service works, see AWS Lambda: How it Works in the AWS Lambda Developer Guide.

Field Summary

Fields

Modifier and Type	Field and Description
protected List<com.amazonaws.transform.JsonErrorUnmarshaller>	jsonErrorUnmarshallers List of exception unmarshallers for all AWS Lambda exceptions.

Fields inherited from class com.amazonaws.AmazonWebServiceClient

client, clientConfiguration, endpoint, endpointPrefix, LOGGING_AWS_REQUEST_METRIC, requestHandler2s, timeOffset

Constructor Summary

Constructors

Constructor and Description
AWSLambdaClient() Deprecated.
AWSLambdaClient(AWSCredentials awsCredentials) Constructs a new client to invoke service methods on AWSLambda using the specified AWS account credentials.
AWSLambdaClient(AWSCredentials awsCredentials, ClientConfiguration clientConfiguration) Constructs a new client to invoke service methods on AWSLambda using the specified AWS account credentials and client configuration options.
AWSLambdaClient(AWSCredentialsProvider awsCredentialsProvider) Constructs a new client to invoke service methods on AWSLambda using the specified AWS account credentials provider.
AWSLambdaClient(AWSCredentialsProvider awsCredentialsProvider, ClientConfiguration clientConfiguration) Constructs a new client to invoke service methods on AWSLambda using the specified AWS account credentials provider and client configuration options.
AWSLambdaClient(AWSCredentialsProvider awsCredentialsProvider, ClientConfiguration clientConfiguration, HttpClient httpClient) Constructs a new client to invoke service methods on AWSLambda using the specified AWS account credentials provider, client configuration options and request metric collector.
AWSLambdaClient(AWSCredentialsProvider awsCredentialsProvider, ClientConfiguration clientConfiguration, RequestMetricCollector requestMetricCollector) Deprecated.
AWSLambdaClient(ClientConfiguration clientConfiguration) Deprecated.

Method Summary

Modifier and Type	Method and Description
ResponseMetadata	getCachedResponseMetadata(AmazonWebServiceRequest request) Deprecated. ResponseMetadata cache can hold up to 50 requests and responses in memory and will cause memory issue. This method now always returns null.
InvokeResult	invoke(InvokeRequest invokeRequest) Invokes a Lambda function.

Methods inherited from class com.amazonaws.AmazonWebServiceClient

addRequestHandler, addRequestHandler, configSigner, configSigner, createExecutionContext, createExecutionContext, createExecutionContext, endClientExecution, endClientExecution, findRequestMetricCollector, getEndpoint, getEndpointPrefix, getRegions, getRequestMetricsCollector, getServiceAbbreviation, getServiceName, getServiceNameIntern, getSigner, getSignerByURI, getSignerRegionOverride, getTimeOffset, isProfilingEnabled, isRequestMetricsEnabled, removeRequestHandler, removeRequestHandler, requestMetricCollector, setConfiguration, setEndpoint, setEndpoint, setRegion, setServiceNameIntern, setSignerRegionOverride, setTimeOffset, shutdown, withTimeOffset

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.amazonaws.services.lambda.AWSLambda

setEndpoint, setRegion, shutdown

Field Detail

jsonErrorUnmarshallers

protected List<com.amazonaws.transform.JsonErrorUnmarshaller> jsonErrorUnmarshallers

List of exception unmarshallers for all AWS Lambda exceptions.

Constructor Detail

AWSLambdaClient

@Deprecated
public AWSLambdaClient()

Deprecated.

Constructs a new client to invoke service methods on AWSLambda. A credentials provider chain will be used that searches for credentials in this order:

• Environment Variables - AWS_ACCESS_KEY_ID and AWS_SECRET_KEY
• Java System Properties - aws.accessKeyId and aws.secretKey
• Instance profile credentials delivered through the Amazon EC2 metadata service

All service calls made using this new client object are blocking, and will not return until the service call completes.

See Also:

DefaultAWSCredentialsProviderChain

AWSLambdaClient

@Deprecated
public AWSLambdaClient(ClientConfiguration clientConfiguration)

Deprecated.

Constructs a new client to invoke service methods on AWSLambda. A credentials provider chain will be used that searches for credentials in this order:

• Environment Variables - AWS_ACCESS_KEY_ID and AWS_SECRET_KEY
• Java System Properties - aws.accessKeyId and aws.secretKey
• Instance profile credentials delivered through the Amazon EC2 metadata service

All service calls made using this new client object are blocking, and will not return until the service call completes.

Parameters:

clientConfiguration - The client configuration options controlling how this client connects to AWSLambda (ex: proxy settings, retry counts, etc.).

See Also:

DefaultAWSCredentialsProviderChain

AWSLambdaClient

public AWSLambdaClient(AWSCredentials awsCredentials)

Constructs a new client to invoke service methods on AWSLambda using the specified AWS account credentials.

If AWS session credentials are passed in, then those credentials will be used to authenticate requests. Otherwise, if AWS long-term credentials are passed in, then session management will be handled automatically by the SDK. Callers are encouraged to use long-term credentials and let the SDK handle starting and renewing sessions.

Automatically managed sessions will be shared among all clients that use the same credentials and service endpoint. To opt out of this behavior, explicitly provide an instance of AWSCredentialsProvider that returns AWSSessionCredentials.

All service calls made using this new client object are blocking, and will not return until the service call completes.

Parameters:

awsCredentials - The AWS credentials (access key ID and secret key) to use when authenticating with AWS services.

AWSLambdaClient

public AWSLambdaClient(AWSCredentials awsCredentials,
                       ClientConfiguration clientConfiguration)

Constructs a new client to invoke service methods on AWSLambda using the specified AWS account credentials and client configuration options.

If AWS session credentials are passed in, then those credentials will be used to authenticate requests. Otherwise, if AWS long-term credentials are passed in, then session management will be handled automatically by the SDK. Callers are encouraged to use long-term credentials and let the SDK handle starting and renewing sessions.

Automatically managed sessions will be shared among all clients that use the same credentials and service endpoint. To opt out of this behavior, explicitly provide an instance of AWSCredentialsProvider that returns AWSSessionCredentials.

All service calls made using this new client object are blocking, and will not return until the service call completes.

Parameters:

awsCredentials - The AWS credentials (access key ID and secret key) to use when authenticating with AWS services.

clientConfiguration - The client configuration options controlling how this client connects to AWSLambda (ex: proxy settings, retry counts, etc.).

AWSLambdaClient

public AWSLambdaClient(AWSCredentialsProvider awsCredentialsProvider)

Constructs a new client to invoke service methods on AWSLambda using the specified AWS account credentials provider.

If AWS session credentials are passed in, then those credentials will be used to authenticate requests. Otherwise, if AWS long-term credentials are passed in, then session management will be handled automatically by the SDK. Callers are encouraged to use long-term credentials and let the SDK handle starting and renewing sessions.

Automatically managed sessions will be shared among all clients that use the same credentials and service endpoint. To opt out of this behavior, explicitly provide an instance of AWSCredentialsProvider that returns AWSSessionCredentials.

All service calls made using this new client object are blocking, and will not return until the service call completes.

Parameters:

awsCredentialsProvider - The AWS credentials provider which will provide credentials to authenticate requests with AWS services.

AWSLambdaClient

public AWSLambdaClient(AWSCredentialsProvider awsCredentialsProvider,
                       ClientConfiguration clientConfiguration)

Constructs a new client to invoke service methods on AWSLambda using the specified AWS account credentials provider and client configuration options.

If AWS session credentials are passed in, then those credentials will be used to authenticate requests. Otherwise, if AWS long-term credentials are passed in, then session management will be handled automatically by the SDK. Callers are encouraged to use long-term credentials and let the SDK handle starting and renewing sessions.

Automatically managed sessions will be shared among all clients that use the same credentials and service endpoint. To opt out of this behavior, explicitly provide an instance of AWSCredentialsProvider that returns AWSSessionCredentials.

All service calls made using this new client object are blocking, and will not return until the service call completes.

Parameters:

awsCredentialsProvider - The AWS credentials provider which will provide credentials to authenticate requests with AWS services.

clientConfiguration - The client configuration options controlling how this client connects to AWSLambda (ex: proxy settings, retry counts, etc.).

AWSLambdaClient

@Deprecated
public AWSLambdaClient(AWSCredentialsProvider awsCredentialsProvider,
                                   ClientConfiguration clientConfiguration,
                                   RequestMetricCollector requestMetricCollector)

Deprecated.

Constructs a new client to invoke service methods on AWSLambda using the specified AWS account credentials provider, client configuration options and request metric collector.

All service calls made using this new client object are blocking, and will not return until the service call completes.

Parameters:

awsCredentialsProvider - The AWS credentials provider which will provide credentials to authenticate requests with AWS services.

clientConfiguration - The client configuration options controlling how this client connects to AWSLambda (ex: proxy settings, retry counts, etc.).

requestMetricCollector - optional request metric collector

AWSLambdaClient

public AWSLambdaClient(AWSCredentialsProvider awsCredentialsProvider,
                       ClientConfiguration clientConfiguration,
                       HttpClient httpClient)

Constructs a new client to invoke service methods on AWSLambda using the specified AWS account credentials provider, client configuration options and request metric collector.

All service calls made using this new client object are blocking, and will not return until the service call completes.

Parameters:

awsCredentialsProvider - The AWS credentials provider which will provide credentials to authenticate requests with AWS services.

clientConfiguration - The client configuration options controlling how this client connects to AWSLambda (ex: proxy settings, retry counts, etc.).

httpClient - A http client

Method Detail

invoke

public InvokeResult invoke(InvokeRequest invokeRequest)
                    throws AmazonServiceException,
                           AmazonClientException

Invokes a Lambda function. You can invoke a function synchronously (and wait for the response), or asynchronously. To invoke a function asynchronously, set InvocationType to Event.

For synchronous invocation, details about the function response, including errors, are included in the response body and headers. For either invocation type, you can find more information in the execution log and trace. To record function errors for asynchronous invocations, configure your function with a dead letter queue.

The status code in the API response doesn't reflect function errors. Error codes are reserved for errors that prevent your function from executing, such as permissions errors, limit errors, or issues with your function's code and configuration. For example, Lambda returns TooManyRequestsException if executing the function would cause you to exceed a concurrency limit at either the account level (ConcurrentInvocationLimitExceeded) or function level ( ReservedFunctionConcurrentInvocationLimitExceeded).

For functions with a long timeout, your client might be disconnected during synchronous invocation while it waits for a response. Configure your HTTP client, SDK, firewall, proxy, or operating system to allow for long connections with timeout or keep-alive settings.

This operation requires permission for the lambda:InvokeFunction action.

Specified by:

invoke in interface AWSLambda

Parameters:

invokeRequest -

Returns:

invokeResult The response from the Invoke service method, as returned by AWS Lambda.

Throws:

ServiceException

ResourceNotFoundException

InvalidRequestContentException

RequestTooLargeException

UnsupportedMediaTypeException

TooManyRequestsException

InvalidParameterValueException

EC2UnexpectedException

SubnetIPAddressLimitReachedException

ENILimitReachedException

EC2ThrottledException

EC2AccessDeniedException

InvalidSubnetIDException

InvalidSecurityGroupIDException

InvalidZipFileException

KMSDisabledException

KMSInvalidStateException

KMSAccessDeniedException

KMSNotFoundException

InvalidRuntimeException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AWS Lambda indicating either a problem with the data in the request, or a server side issue.

getCachedResponseMetadata

@Deprecated
public ResponseMetadata getCachedResponseMetadata(AmazonWebServiceRequest request)

Deprecated. ResponseMetadata cache can hold up to 50 requests and responses in memory and will cause memory issue. This method now always returns null.

Returns additional metadata for a previously executed successful, request, typically used for debugging issues where a service isn't acting as expected. This data isn't considered part of the result data returned by an operation, so it's available through this separate, diagnostic interface.

Response metadata is only cached for a limited period of time, so if you need to access this extra diagnostic information for an executed request, you should use this method to retrieve it as soon as possible after executing the request.

Specified by:

getCachedResponseMetadata in interface AWSLambda

Parameters:

request - The originally executed request

Returns:

The response metadata for the specified request, or null if none is available.