/*
* Copyright 2010-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package com.amazonaws.services.lambda;
import java.util.*;
import com.amazonaws.*;
import com.amazonaws.auth.*;
import com.amazonaws.handlers.*;
import com.amazonaws.http.*;
import com.amazonaws.internal.*;
import com.amazonaws.metrics.*;
import com.amazonaws.transform.*;
import com.amazonaws.util.*;
import com.amazonaws.util.AWSRequestMetrics.Field;
import com.amazonaws.services.lambda.model.*;
import com.amazonaws.services.lambda.model.transform.*;
/**
* Client for accessing AWS Lambda. All service calls made using this client are
* blocking, and will not return until the service call completes.
* <p>
* <fullname>AWS Lambda</fullname>
* <p>
* <b>Overview</b>
* </p>
* <p>
* This is the <i>AWS Lambda API Reference</i>. The AWS Lambda Developer Guide
* provides additional information. For the service overview, go to <a
* href="http://docs.aws.amazon.com/lambda/latest/dg/welcome.html">What is AWS
* Lambda</a>, and for information about how the service works, go to <a
* href="http://docs.aws.amazon.com/lambda/latest/dg/lambda-introduction.html"
* >AWS Lambda: How it Works</a> in the <i>AWS Lambda Developer Guide</i>.
* </p>
*/
public class AWSLambdaClient extends AmazonWebServiceClient implements AWSLambda {
/** Provider for AWS credentials. */
private AWSCredentialsProvider awsCredentialsProvider;
/**
* List of exception unmarshallers for all AWS Lambda exceptions.
*/
protected List<JsonErrorUnmarshaller> jsonErrorUnmarshallers;
/**
* Constructs a new client to invoke service methods on AWSLambda. A
* credentials provider chain will be used that searches for credentials in
* this order:
* <ul>
* <li>Environment Variables - AWS_ACCESS_KEY_ID and AWS_SECRET_KEY</li>
* <li>Java System Properties - aws.accessKeyId and aws.secretKey</li>
* <li>Instance profile credentials delivered through the Amazon EC2
* metadata service</li>
* </ul>
* <p>
* All service calls made using this new client object are blocking, and
* will not return until the service call completes.
*
* @see DefaultAWSCredentialsProviderChain
*/
@Deprecated
public AWSLambdaClient() {
this(new DefaultAWSCredentialsProviderChain(), new ClientConfiguration());
}
/**
* Constructs a new client to invoke service methods on AWSLambda. A
* credentials provider chain will be used that searches for credentials in
* this order:
* <ul>
* <li>Environment Variables - AWS_ACCESS_KEY_ID and AWS_SECRET_KEY</li>
* <li>Java System Properties - aws.accessKeyId and aws.secretKey</li>
* <li>Instance profile credentials delivered through the Amazon EC2
* metadata service</li>
* </ul>
* <p>
* All service calls made using this new client object are blocking, and
* will not return until the service call completes.
*
* @param clientConfiguration The client configuration options controlling
* how this client connects to AWSLambda (ex: proxy settings,
* retry counts, etc.).
* @see DefaultAWSCredentialsProviderChain
*/
@Deprecated
public AWSLambdaClient(ClientConfiguration clientConfiguration) {
this(new DefaultAWSCredentialsProviderChain(), clientConfiguration);
}
/**
* Constructs a new client to invoke service methods on AWSLambda using the
* specified AWS account credentials.
* <p>
* 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.
* <p>
* 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 {@link AWSCredentialsProvider} that
* returns {@link AWSSessionCredentials}.
* <p>
* All service calls made using this new client object are blocking, and
* will not return until the service call completes.
*
* @param awsCredentials The AWS credentials (access key ID and secret key)
* to use when authenticating with AWS services.
*/
public AWSLambdaClient(AWSCredentials awsCredentials) {
this(awsCredentials, new ClientConfiguration());
}
/**
* Constructs a new client to invoke service methods on AWSLambda using the
* specified AWS account credentials and client configuration options.
* <p>
* 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.
* <p>
* 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 {@link AWSCredentialsProvider} that
* returns {@link AWSSessionCredentials}.
* <p>
* All service calls made using this new client object are blocking, and
* will not return until the service call completes.
*
* @param awsCredentials The AWS credentials (access key ID and secret key)
* to use when authenticating with AWS services.
* @param clientConfiguration The client configuration options controlling
* how this client connects to AWSLambda (ex: proxy settings,
* retry counts, etc.).
*/
public AWSLambdaClient(AWSCredentials awsCredentials, ClientConfiguration clientConfiguration) {
this(new StaticCredentialsProvider(awsCredentials), clientConfiguration);
}
/**
* Constructs a new client to invoke service methods on AWSLambda using the
* specified AWS account credentials provider.
* <p>
* 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.
* <p>
* 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 {@link AWSCredentialsProvider} that
* returns {@link AWSSessionCredentials}.
* <p>
* All service calls made using this new client object are blocking, and
* will not return until the service call completes.
*
* @param awsCredentialsProvider The AWS credentials provider which will
* provide credentials to authenticate requests with AWS
* services.
*/
public AWSLambdaClient(AWSCredentialsProvider awsCredentialsProvider) {
this(awsCredentialsProvider, new ClientConfiguration());
}
/**
* Constructs a new client to invoke service methods on AWSLambda using the
* specified AWS account credentials provider and client configuration
* options.
* <p>
* 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.
* <p>
* 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 {@link AWSCredentialsProvider} that
* returns {@link AWSSessionCredentials}.
* <p>
* All service calls made using this new client object are blocking, and
* will not return until the service call completes.
*
* @param awsCredentialsProvider The AWS credentials provider which will
* provide credentials to authenticate requests with AWS
* services.
* @param clientConfiguration The client configuration options controlling
* how this client connects to AWSLambda (ex: proxy settings,
* retry counts, etc.).
*/
public AWSLambdaClient(AWSCredentialsProvider awsCredentialsProvider,
ClientConfiguration clientConfiguration) {
this(awsCredentialsProvider, clientConfiguration, new UrlHttpClient(clientConfiguration));
}
/**
* Constructs a new client to invoke service methods on AWSLambda using the
* specified AWS account credentials provider, client configuration options
* and request metric collector.
* <p>
* All service calls made using this new client object are blocking, and
* will not return until the service call completes.
*
* @param awsCredentialsProvider The AWS credentials provider which will
* provide credentials to authenticate requests with AWS
* services.
* @param clientConfiguration The client configuration options controlling
* how this client connects to AWSLambda (ex: proxy settings,
* retry counts, etc.).
* @param requestMetricCollector optional request metric collector
*/
@Deprecated
public AWSLambdaClient(AWSCredentialsProvider awsCredentialsProvider,
ClientConfiguration clientConfiguration,
RequestMetricCollector requestMetricCollector) {
super(adjustClientConfiguration(clientConfiguration), requestMetricCollector);
this.awsCredentialsProvider = awsCredentialsProvider;
init();
}
/**
* Constructs a new client to invoke service methods on AWSLambda using the
* specified AWS account credentials provider, client configuration options
* and request metric collector.
* <p>
* All service calls made using this new client object are blocking, and
* will not return until the service call completes.
*
* @param awsCredentialsProvider The AWS credentials provider which will
* provide credentials to authenticate requests with AWS
* services.
* @param clientConfiguration The client configuration options controlling
* how this client connects to AWSLambda (ex: proxy settings,
* retry counts, etc.).
* @param httpClient A http client
*/
public AWSLambdaClient(AWSCredentialsProvider awsCredentialsProvider,
ClientConfiguration clientConfiguration, HttpClient httpClient) {
super(adjustClientConfiguration(clientConfiguration), httpClient);
this.awsCredentialsProvider = awsCredentialsProvider;
init();
}
private void init() {
jsonErrorUnmarshallers = new ArrayList<JsonErrorUnmarshaller>();
jsonErrorUnmarshallers.add(new EC2AccessDeniedExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new EC2ThrottledExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new EC2UnexpectedExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new ENILimitReachedExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new InvalidParameterValueExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new InvalidRequestContentExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new InvalidSecurityGroupIDExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new InvalidSubnetIDExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new InvalidZipFileExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new KMSAccessDeniedExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new KMSDisabledExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new KMSInvalidStateExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new KMSNotFoundExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new RequestTooLargeExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new ResourceNotFoundExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new ServiceExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new SubnetIPAddressLimitReachedExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new TooManyRequestsExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new UnsupportedMediaTypeExceptionUnmarshaller());
jsonErrorUnmarshallers.add(new JsonErrorUnmarshaller());
// calling this.setEndPoint(...) will also modify the signer accordingly
this.setEndpoint("lambda.us-east-1.amazonaws.com");
HandlerChainFactory chainFactory = new HandlerChainFactory();
requestHandler2s.addAll(chainFactory.newRequestHandlerChain(
"/com/amazonaws/services/lambda/request.handlers"));
requestHandler2s.addAll(chainFactory.newRequestHandler2Chain(
"/com/amazonaws/services/lambda/request.handler2s"));
}
private static ClientConfiguration adjustClientConfiguration(ClientConfiguration orig) {
ClientConfiguration config = orig;
return config;
}
/**
* <p>
* Invokes a specific Lambda function. For an example, see <a href=
* "http://docs.aws.amazon.com/lambda/latest/dg/with-dynamodb-create-function.html#with-dbb-invoke-manually"
* >Create the Lambda Function and Test It Manually</a>.
* </p>
* <p>
* If you are using the versioning feature, you can invoke the specific
* function version by providing function version or alias name that is
* pointing to the function version using the <code>Qualifier</code>
* parameter in the request. If you don't provide the <code>Qualifier</code>
* parameter, the <code>$LATEST</code> version of the Lambda function is
* invoked. Invocations occur at least once in response to an event and
* functions must be idempotent to handle this. For information about the
* versioning feature, see <a href=
* "http://docs.aws.amazon.com/lambda/latest/dg/versioning-aliases.html">AWS
* Lambda Function Versioning and Aliases</a>.
* </p>
* <p>
* This operation requires permission for the
* <code>lambda:InvokeFunction</code> action.
* </p>
*
* @param invokeRequest <p/>
* @return invokeResult The response from the Invoke service method, as
* returned by AWS Lambda.
* @throws ServiceException
* @throws ResourceNotFoundException
* @throws InvalidRequestContentException
* @throws RequestTooLargeException
* @throws UnsupportedMediaTypeException
* @throws TooManyRequestsException
* @throws InvalidParameterValueException
* @throws EC2UnexpectedException
* @throws SubnetIPAddressLimitReachedException
* @throws ENILimitReachedException
* @throws EC2ThrottledException
* @throws EC2AccessDeniedException
* @throws InvalidSubnetIDException
* @throws InvalidSecurityGroupIDException
* @throws InvalidZipFileException
* @throws KMSDisabledException
* @throws KMSInvalidStateException
* @throws KMSAccessDeniedException
* @throws KMSNotFoundException
* @throws 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.
* @throws 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.
*/
public InvokeResult invoke(InvokeRequest invokeRequest)
throws AmazonServiceException, AmazonClientException {
ExecutionContext executionContext = createExecutionContext(invokeRequest);
AWSRequestMetrics awsRequestMetrics = executionContext.getAwsRequestMetrics();
awsRequestMetrics.startEvent(Field.ClientExecuteTime);
Request<InvokeRequest> request = null;
Response<InvokeResult> response = null;
try {
awsRequestMetrics.startEvent(Field.RequestMarshallTime);
try {
request = new InvokeRequestMarshaller().marshall(invokeRequest);
// Binds the request metrics to the current request.
request.setAWSRequestMetrics(awsRequestMetrics);
} finally {
awsRequestMetrics.endEvent(Field.RequestMarshallTime);
}
Unmarshaller<InvokeResult, JsonUnmarshallerContext> unmarshaller = new InvokeResultJsonUnmarshaller();
JsonResponseHandler<InvokeResult> responseHandler = new JsonResponseHandler<InvokeResult>(
unmarshaller);
response = invoke(request, responseHandler, executionContext);
return response.getAwsResponse();
} finally {
endClientExecution(awsRequestMetrics, request, response, LOGGING_AWS_REQUEST_METRIC);
}
}
/**
* 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.
* <p>
* 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.
*
* @param request The originally executed request
* @return The response metadata for the specified request, or null if none
* is available.
* @deprecated ResponseMetadata cache can hold up to 50 requests and
* responses in memory and will cause memory issue. This method
* now always returns null.
*/
@Deprecated
public ResponseMetadata getCachedResponseMetadata(AmazonWebServiceRequest request) {
return client.getResponseMetadataForRequest(request);
}
private <X, Y extends AmazonWebServiceRequest> Response<X> invoke(Request<Y> request,
HttpResponseHandler<AmazonWebServiceResponse<X>> responseHandler,
ExecutionContext executionContext) {
request.setEndpoint(endpoint);
request.setTimeOffset(timeOffset);
AWSRequestMetrics awsRequestMetrics = executionContext.getAwsRequestMetrics();
AWSCredentials credentials;
awsRequestMetrics.startEvent(Field.CredentialsRequestTime);
try {
credentials = awsCredentialsProvider.getCredentials();
} finally {
awsRequestMetrics.endEvent(Field.CredentialsRequestTime);
}
AmazonWebServiceRequest originalRequest = request.getOriginalRequest();
if (originalRequest != null && originalRequest.getRequestCredentials() != null) {
credentials = originalRequest.getRequestCredentials();
}
executionContext.setCredentials(credentials);
JsonErrorResponseHandler errorResponseHandler = new JsonErrorResponseHandler(
jsonErrorUnmarshallers);
Response<X> result = client.execute(request, responseHandler,
errorResponseHandler, executionContext);
return result;
}
}