com.amazonaws.services.dynamodbv2.AmazonDynamoDBStreamsClient.java Source code

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/*
 * Copyright 2014-2019 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.dynamodbv2;

import org.w3c.dom.*;

import java.net.*;
import java.util.*;

import javax.annotation.Generated;

import org.apache.commons.logging.*;

import com.amazonaws.*;
import com.amazonaws.annotation.SdkInternalApi;
import com.amazonaws.auth.*;

import com.amazonaws.handlers.*;
import com.amazonaws.http.*;
import com.amazonaws.internal.*;
import com.amazonaws.internal.auth.*;
import com.amazonaws.metrics.*;
import com.amazonaws.regions.*;
import com.amazonaws.transform.*;
import com.amazonaws.util.*;
import com.amazonaws.protocol.json.*;
import com.amazonaws.util.AWSRequestMetrics.Field;
import com.amazonaws.annotation.ThreadSafe;
import com.amazonaws.client.AwsSyncClientParams;
import com.amazonaws.client.builder.AdvancedConfig;

import com.amazonaws.services.dynamodbv2.AmazonDynamoDBStreamsClientBuilder;

import com.amazonaws.AmazonServiceException;

import com.amazonaws.services.dynamodbv2.model.*;
import com.amazonaws.services.dynamodbv2.model.transform.*;

/**
 * Client for accessing Amazon DynamoDB Streams. All service calls made using this client are blocking, and will not
 * return until the service call completes.
 * <p>
 * <fullname>Amazon DynamoDB</fullname>
 * <p>
 * Amazon DynamoDB Streams provides API actions for accessing streams and processing stream records. To learn more about
 * application development with Streams, see <a
 * href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Streams.html">Capturing Table Activity with
 * DynamoDB Streams</a> in the Amazon DynamoDB Developer Guide.
 * </p>
 */
@ThreadSafe
@Generated("com.amazonaws:aws-java-sdk-code-generator")
public class AmazonDynamoDBStreamsClient extends AmazonWebServiceClient implements AmazonDynamoDBStreams {

    /** Provider for AWS credentials. */
    private final AWSCredentialsProvider awsCredentialsProvider;

    private static final Log log = LogFactory.getLog(AmazonDynamoDBStreams.class);

    /** Default signing name for the service. */
    private static final String DEFAULT_SIGNING_NAME = "dynamodb";

    /** Client configuration factory providing ClientConfigurations tailored to this client */
    protected static final ClientConfigurationFactory configFactory = new ClientConfigurationFactory();

    private final AdvancedConfig advancedConfig;

    private static final com.amazonaws.protocol.json.SdkJsonProtocolFactory protocolFactory = new com.amazonaws.protocol.json.SdkJsonProtocolFactory(
            new JsonClientMetadata().withProtocolVersion("1.0").withSupportsCbor(false).withSupportsIon(false)
                    .addErrorMetadata(new JsonErrorShapeMetadata().withErrorCode("TrimmedDataAccessException")
                            .withExceptionUnmarshaller(
                                    com.amazonaws.services.dynamodbv2.model.transform.TrimmedDataAccessExceptionUnmarshaller
                                            .getInstance()))
                    .addErrorMetadata(new JsonErrorShapeMetadata().withErrorCode("ResourceNotFoundException")
                            .withExceptionUnmarshaller(
                                    com.amazonaws.services.dynamodbv2.model.transform.ResourceNotFoundExceptionUnmarshaller
                                            .getInstance()))
                    .addErrorMetadata(new JsonErrorShapeMetadata().withErrorCode("ExpiredIteratorException")
                            .withExceptionUnmarshaller(
                                    com.amazonaws.services.dynamodbv2.model.transform.ExpiredIteratorExceptionUnmarshaller
                                            .getInstance()))
                    .addErrorMetadata(new JsonErrorShapeMetadata().withErrorCode("InternalServerError")
                            .withExceptionUnmarshaller(
                                    com.amazonaws.services.dynamodbv2.model.transform.InternalServerErrorExceptionUnmarshaller
                                            .getInstance()))
                    .addErrorMetadata(new JsonErrorShapeMetadata().withErrorCode("LimitExceededException")
                            .withExceptionUnmarshaller(
                                    com.amazonaws.services.dynamodbv2.model.transform.LimitExceededExceptionUnmarshaller
                                            .getInstance()))
                    .withBaseServiceExceptionClass(
                            com.amazonaws.services.dynamodbv2.model.AmazonDynamoDBException.class));

    /**
     * Constructs a new client to invoke service methods on Amazon DynamoDB Streams. 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 use {@link AmazonDynamoDBStreamsClientBuilder#defaultClient()}
     */
    @Deprecated
    public AmazonDynamoDBStreamsClient() {
        this(DefaultAWSCredentialsProviderChain.getInstance(), configFactory.getConfig());
    }

    /**
     * Constructs a new client to invoke service methods on Amazon DynamoDB Streams. 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 Amazon DynamoDB Streams (ex:
     *        proxy settings, retry counts, etc.).
     *
     * @see DefaultAWSCredentialsProviderChain
     * @deprecated use {@link AmazonDynamoDBStreamsClientBuilder#withClientConfiguration(ClientConfiguration)}
     */
    @Deprecated
    public AmazonDynamoDBStreamsClient(ClientConfiguration clientConfiguration) {
        this(DefaultAWSCredentialsProviderChain.getInstance(), clientConfiguration);
    }

    /**
     * Constructs a new client to invoke service methods on Amazon DynamoDB Streams using the specified AWS account
     * credentials.
     *
     * <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.
     * @deprecated use {@link AmazonDynamoDBStreamsClientBuilder#withCredentials(AWSCredentialsProvider)} for example:
     *             {@code AmazonDynamoDBStreamsClientBuilder.standard().withCredentials(new AWSStaticCredentialsProvider(awsCredentials)).build();}
     */
    @Deprecated
    public AmazonDynamoDBStreamsClient(AWSCredentials awsCredentials) {
        this(awsCredentials, configFactory.getConfig());
    }

    /**
     * Constructs a new client to invoke service methods on Amazon DynamoDB Streams using the specified AWS account
     * credentials and client configuration options.
     *
     * <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 Amazon DynamoDB Streams (ex:
     *        proxy settings, retry counts, etc.).
     * @deprecated use {@link AmazonDynamoDBStreamsClientBuilder#withCredentials(AWSCredentialsProvider)} and
     *             {@link AmazonDynamoDBStreamsClientBuilder#withClientConfiguration(ClientConfiguration)}
     */
    @Deprecated
    public AmazonDynamoDBStreamsClient(AWSCredentials awsCredentials, ClientConfiguration clientConfiguration) {
        super(clientConfiguration);
        this.awsCredentialsProvider = new StaticCredentialsProvider(awsCredentials);
        this.advancedConfig = AdvancedConfig.EMPTY;
        init();
    }

    /**
     * Constructs a new client to invoke service methods on Amazon DynamoDB Streams using the specified AWS account
     * credentials provider.
     *
     * <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.
     * @deprecated use {@link AmazonDynamoDBStreamsClientBuilder#withCredentials(AWSCredentialsProvider)}
     */
    @Deprecated
    public AmazonDynamoDBStreamsClient(AWSCredentialsProvider awsCredentialsProvider) {
        this(awsCredentialsProvider, configFactory.getConfig());
    }

    /**
     * Constructs a new client to invoke service methods on Amazon DynamoDB Streams using the specified AWS account
     * credentials provider and client configuration options.
     *
     * <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 Amazon DynamoDB Streams (ex:
     *        proxy settings, retry counts, etc.).
     * @deprecated use {@link AmazonDynamoDBStreamsClientBuilder#withCredentials(AWSCredentialsProvider)} and
     *             {@link AmazonDynamoDBStreamsClientBuilder#withClientConfiguration(ClientConfiguration)}
     */
    @Deprecated
    public AmazonDynamoDBStreamsClient(AWSCredentialsProvider awsCredentialsProvider,
            ClientConfiguration clientConfiguration) {
        this(awsCredentialsProvider, clientConfiguration, null);
    }

    /**
     * Constructs a new client to invoke service methods on Amazon DynamoDB Streams 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 Amazon DynamoDB Streams (ex:
     *        proxy settings, retry counts, etc.).
     * @param requestMetricCollector
     *        optional request metric collector
     * @deprecated use {@link AmazonDynamoDBStreamsClientBuilder#withCredentials(AWSCredentialsProvider)} and
     *             {@link AmazonDynamoDBStreamsClientBuilder#withClientConfiguration(ClientConfiguration)} and
     *             {@link AmazonDynamoDBStreamsClientBuilder#withMetricsCollector(RequestMetricCollector)}
     */
    @Deprecated
    public AmazonDynamoDBStreamsClient(AWSCredentialsProvider awsCredentialsProvider,
            ClientConfiguration clientConfiguration, RequestMetricCollector requestMetricCollector) {
        super(clientConfiguration, requestMetricCollector);
        this.awsCredentialsProvider = awsCredentialsProvider;
        this.advancedConfig = AdvancedConfig.EMPTY;
        init();
    }

    public static AmazonDynamoDBStreamsClientBuilder builder() {
        return AmazonDynamoDBStreamsClientBuilder.standard();
    }

    /**
     * Constructs a new client to invoke service methods on Amazon DynamoDB Streams using the specified parameters.
     *
     * <p>
     * All service calls made using this new client object are blocking, and will not return until the service call
     * completes.
     *
     * @param clientParams
     *        Object providing client parameters.
     */
    AmazonDynamoDBStreamsClient(AwsSyncClientParams clientParams) {
        this(clientParams, false);
    }

    /**
     * Constructs a new client to invoke service methods on Amazon DynamoDB Streams using the specified parameters.
     *
     * <p>
     * All service calls made using this new client object are blocking, and will not return until the service call
     * completes.
     *
     * @param clientParams
     *        Object providing client parameters.
     */
    AmazonDynamoDBStreamsClient(AwsSyncClientParams clientParams, boolean endpointDiscoveryEnabled) {
        super(clientParams);
        this.awsCredentialsProvider = clientParams.getCredentialsProvider();
        this.advancedConfig = clientParams.getAdvancedConfig();
        init();
    }

    private void init() {
        setServiceNameIntern(DEFAULT_SIGNING_NAME);
        setEndpointPrefix(ENDPOINT_PREFIX);
        // calling this.setEndPoint(...) will also modify the signer accordingly
        setEndpoint("https://streams.dynamodb.us-east-1.amazonaws.com");
        HandlerChainFactory chainFactory = new HandlerChainFactory();
        requestHandler2s
                .addAll(chainFactory.newRequestHandlerChain("/com/amazonaws/services/dynamodbv2/request.handlers"));
        requestHandler2s.addAll(
                chainFactory.newRequestHandler2Chain("/com/amazonaws/services/dynamodbv2/request.handler2s"));
        requestHandler2s.addAll(chainFactory.getGlobalHandlers());
    }

    /**
     * <p>
     * Returns information about a stream, including the current status of the stream, its Amazon Resource Name (ARN),
     * the composition of its shards, and its corresponding DynamoDB table.
     * </p>
     * <note>
     * <p>
     * You can call <code>DescribeStream</code> at a maximum rate of 10 times per second.
     * </p>
     * </note>
     * <p>
     * Each shard in the stream has a <code>SequenceNumberRange</code> associated with it. If the
     * <code>SequenceNumberRange</code> has a <code>StartingSequenceNumber</code> but no
     * <code>EndingSequenceNumber</code>, then the shard is still open (able to receive more stream records). If both
     * <code>StartingSequenceNumber</code> and <code>EndingSequenceNumber</code> are present, then that shard is closed
     * and can no longer receive more data.
     * </p>
     * 
     * @param describeStreamRequest
     *        Represents the input of a <code>DescribeStream</code> operation.
     * @return Result of the DescribeStream operation returned by the service.
     * @throws ResourceNotFoundException
     *         The operation tried to access a nonexistent stream.
     * @throws InternalServerErrorException
     *         An error occurred on the server side.
     * @sample AmazonDynamoDBStreams.DescribeStream
     * @see <a href="http://docs.aws.amazon.com/goto/WebAPI/streams-dynamodb-2012-08-10/DescribeStream"
     *      target="_top">AWS API Documentation</a>
     */
    @Override
    public DescribeStreamResult describeStream(DescribeStreamRequest request) {
        request = beforeClientExecution(request);
        return executeDescribeStream(request);
    }

    @SdkInternalApi
    final DescribeStreamResult executeDescribeStream(DescribeStreamRequest describeStreamRequest) {

        ExecutionContext executionContext = createExecutionContext(describeStreamRequest);
        AWSRequestMetrics awsRequestMetrics = executionContext.getAwsRequestMetrics();
        awsRequestMetrics.startEvent(Field.ClientExecuteTime);
        Request<DescribeStreamRequest> request = null;
        Response<DescribeStreamResult> response = null;

        try {
            awsRequestMetrics.startEvent(Field.RequestMarshallTime);
            try {
                request = new DescribeStreamRequestProtocolMarshaller(protocolFactory)
                        .marshall(super.beforeMarshalling(describeStreamRequest));
                // Binds the request metrics to the current request.
                request.setAWSRequestMetrics(awsRequestMetrics);
                request.addHandlerContext(HandlerContextKey.SIGNING_REGION, getSigningRegion());
                request.addHandlerContext(HandlerContextKey.SERVICE_ID, "DynamoDB Streams");
                request.addHandlerContext(HandlerContextKey.OPERATION_NAME, "DescribeStream");
                request.addHandlerContext(HandlerContextKey.ADVANCED_CONFIG, advancedConfig);

            } finally {
                awsRequestMetrics.endEvent(Field.RequestMarshallTime);
            }

            HttpResponseHandler<AmazonWebServiceResponse<DescribeStreamResult>> responseHandler = protocolFactory
                    .createResponseHandler(new JsonOperationMetadata().withPayloadJson(true)
                            .withHasStreamingSuccessResponse(false), new DescribeStreamResultJsonUnmarshaller());
            response = invoke(request, responseHandler, executionContext);

            return response.getAwsResponse();

        } finally {

            endClientExecution(awsRequestMetrics, request, response);
        }
    }

    /**
     * <p>
     * Retrieves the stream records from a given shard.
     * </p>
     * <p>
     * Specify a shard iterator using the <code>ShardIterator</code> parameter. The shard iterator specifies the
     * position in the shard from which you want to start reading stream records sequentially. If there are no stream
     * records available in the portion of the shard that the iterator points to, <code>GetRecords</code> returns an
     * empty list. Note that it might take multiple calls to get to a portion of the shard that contains stream records.
     * </p>
     * <note>
     * <p>
     * <code>GetRecords</code> can retrieve a maximum of 1 MB of data or 1000 stream records, whichever comes first.
     * </p>
     * </note>
     * 
     * @param getRecordsRequest
     *        Represents the input of a <code>GetRecords</code> operation.
     * @return Result of the GetRecords operation returned by the service.
     * @throws ResourceNotFoundException
     *         The operation tried to access a nonexistent stream.
     * @throws LimitExceededException
     *         Your request rate is too high. The AWS SDKs for DynamoDB automatically retry requests that receive this
     *         exception. Your request is eventually successful, unless your retry queue is too large to finish. Reduce
     *         the frequency of requests and use exponential backoff. For more information, go to <a
     *         href="http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ErrorHandling.html#APIRetries"
     *         >Error Retries and Exponential Backoff</a> in the <i>Amazon DynamoDB Developer Guide</i>.
     * @throws InternalServerErrorException
     *         An error occurred on the server side.
     * @throws ExpiredIteratorException
     *         The shard iterator has expired and can no longer be used to retrieve stream records. A shard iterator
     *         expires 15 minutes after it is retrieved using the <code>GetShardIterator</code> action.
     * @throws TrimmedDataAccessException
     *         The operation attempted to read past the oldest stream record in a shard.</p>
     *         <p>
     *         In DynamoDB Streams, there is a 24 hour limit on data retention. Stream records whose age exceeds this
     *         limit are subject to removal (trimming) from the stream. You might receive a TrimmedDataAccessException
     *         if:
     *         </p>
     *         <ul>
     *         <li>
     *         <p>
     *         You request a shard iterator with a sequence number older than the trim point (24 hours).
     *         </p>
     *         </li>
     *         <li>
     *         <p>
     *         You obtain a shard iterator, but before you use the iterator in a <code>GetRecords</code> request, a
     *         stream record in the shard exceeds the 24 hour period and is trimmed. This causes the iterator to access
     *         a record that no longer exists.
     *         </p>
     *         </li>
     * @sample AmazonDynamoDBStreams.GetRecords
     * @see <a href="http://docs.aws.amazon.com/goto/WebAPI/streams-dynamodb-2012-08-10/GetRecords" target="_top">AWS
     *      API Documentation</a>
     */
    @Override
    public GetRecordsResult getRecords(GetRecordsRequest request) {
        request = beforeClientExecution(request);
        return executeGetRecords(request);
    }

    @SdkInternalApi
    final GetRecordsResult executeGetRecords(GetRecordsRequest getRecordsRequest) {

        ExecutionContext executionContext = createExecutionContext(getRecordsRequest);
        AWSRequestMetrics awsRequestMetrics = executionContext.getAwsRequestMetrics();
        awsRequestMetrics.startEvent(Field.ClientExecuteTime);
        Request<GetRecordsRequest> request = null;
        Response<GetRecordsResult> response = null;

        try {
            awsRequestMetrics.startEvent(Field.RequestMarshallTime);
            try {
                request = new GetRecordsRequestProtocolMarshaller(protocolFactory)
                        .marshall(super.beforeMarshalling(getRecordsRequest));
                // Binds the request metrics to the current request.
                request.setAWSRequestMetrics(awsRequestMetrics);
                request.addHandlerContext(HandlerContextKey.SIGNING_REGION, getSigningRegion());
                request.addHandlerContext(HandlerContextKey.SERVICE_ID, "DynamoDB Streams");
                request.addHandlerContext(HandlerContextKey.OPERATION_NAME, "GetRecords");
                request.addHandlerContext(HandlerContextKey.ADVANCED_CONFIG, advancedConfig);

            } finally {
                awsRequestMetrics.endEvent(Field.RequestMarshallTime);
            }

            HttpResponseHandler<AmazonWebServiceResponse<GetRecordsResult>> responseHandler = protocolFactory
                    .createResponseHandler(new JsonOperationMetadata().withPayloadJson(true)
                            .withHasStreamingSuccessResponse(false), new GetRecordsResultJsonUnmarshaller());
            response = invoke(request, responseHandler, executionContext);

            return response.getAwsResponse();

        } finally {

            endClientExecution(awsRequestMetrics, request, response);
        }
    }

    /**
     * <p>
     * Returns a shard iterator. A shard iterator provides information about how to retrieve the stream records from
     * within a shard. Use the shard iterator in a subsequent <code>GetRecords</code> request to read the stream records
     * from the shard.
     * </p>
     * <note>
     * <p>
     * A shard iterator expires 15 minutes after it is returned to the requester.
     * </p>
     * </note>
     * 
     * @param getShardIteratorRequest
     *        Represents the input of a <code>GetShardIterator</code> operation.
     * @return Result of the GetShardIterator operation returned by the service.
     * @throws ResourceNotFoundException
     *         The operation tried to access a nonexistent stream.
     * @throws InternalServerErrorException
     *         An error occurred on the server side.
     * @throws TrimmedDataAccessException
     *         The operation attempted to read past the oldest stream record in a shard.</p>
     *         <p>
     *         In DynamoDB Streams, there is a 24 hour limit on data retention. Stream records whose age exceeds this
     *         limit are subject to removal (trimming) from the stream. You might receive a TrimmedDataAccessException
     *         if:
     *         </p>
     *         <ul>
     *         <li>
     *         <p>
     *         You request a shard iterator with a sequence number older than the trim point (24 hours).
     *         </p>
     *         </li>
     *         <li>
     *         <p>
     *         You obtain a shard iterator, but before you use the iterator in a <code>GetRecords</code> request, a
     *         stream record in the shard exceeds the 24 hour period and is trimmed. This causes the iterator to access
     *         a record that no longer exists.
     *         </p>
     *         </li>
     * @sample AmazonDynamoDBStreams.GetShardIterator
     * @see <a href="http://docs.aws.amazon.com/goto/WebAPI/streams-dynamodb-2012-08-10/GetShardIterator"
     *      target="_top">AWS API Documentation</a>
     */
    @Override
    public GetShardIteratorResult getShardIterator(GetShardIteratorRequest request) {
        request = beforeClientExecution(request);
        return executeGetShardIterator(request);
    }

    @SdkInternalApi
    final GetShardIteratorResult executeGetShardIterator(GetShardIteratorRequest getShardIteratorRequest) {

        ExecutionContext executionContext = createExecutionContext(getShardIteratorRequest);
        AWSRequestMetrics awsRequestMetrics = executionContext.getAwsRequestMetrics();
        awsRequestMetrics.startEvent(Field.ClientExecuteTime);
        Request<GetShardIteratorRequest> request = null;
        Response<GetShardIteratorResult> response = null;

        try {
            awsRequestMetrics.startEvent(Field.RequestMarshallTime);
            try {
                request = new GetShardIteratorRequestProtocolMarshaller(protocolFactory)
                        .marshall(super.beforeMarshalling(getShardIteratorRequest));
                // Binds the request metrics to the current request.
                request.setAWSRequestMetrics(awsRequestMetrics);
                request.addHandlerContext(HandlerContextKey.SIGNING_REGION, getSigningRegion());
                request.addHandlerContext(HandlerContextKey.SERVICE_ID, "DynamoDB Streams");
                request.addHandlerContext(HandlerContextKey.OPERATION_NAME, "GetShardIterator");
                request.addHandlerContext(HandlerContextKey.ADVANCED_CONFIG, advancedConfig);

            } finally {
                awsRequestMetrics.endEvent(Field.RequestMarshallTime);
            }

            HttpResponseHandler<AmazonWebServiceResponse<GetShardIteratorResult>> responseHandler = protocolFactory
                    .createResponseHandler(new JsonOperationMetadata().withPayloadJson(true)
                            .withHasStreamingSuccessResponse(false), new GetShardIteratorResultJsonUnmarshaller());
            response = invoke(request, responseHandler, executionContext);

            return response.getAwsResponse();

        } finally {

            endClientExecution(awsRequestMetrics, request, response);
        }
    }

    /**
     * <p>
     * Returns an array of stream ARNs associated with the current account and endpoint. If the <code>TableName</code>
     * parameter is present, then <code>ListStreams</code> will return only the streams ARNs for that table.
     * </p>
     * <note>
     * <p>
     * You can call <code>ListStreams</code> at a maximum rate of 5 times per second.
     * </p>
     * </note>
     * 
     * @param listStreamsRequest
     *        Represents the input of a <code>ListStreams</code> operation.
     * @return Result of the ListStreams operation returned by the service.
     * @throws ResourceNotFoundException
     *         The operation tried to access a nonexistent stream.
     * @throws InternalServerErrorException
     *         An error occurred on the server side.
     * @sample AmazonDynamoDBStreams.ListStreams
     * @see <a href="http://docs.aws.amazon.com/goto/WebAPI/streams-dynamodb-2012-08-10/ListStreams" target="_top">AWS
     *      API Documentation</a>
     */
    @Override
    public ListStreamsResult listStreams(ListStreamsRequest request) {
        request = beforeClientExecution(request);
        return executeListStreams(request);
    }

    @SdkInternalApi
    final ListStreamsResult executeListStreams(ListStreamsRequest listStreamsRequest) {

        ExecutionContext executionContext = createExecutionContext(listStreamsRequest);
        AWSRequestMetrics awsRequestMetrics = executionContext.getAwsRequestMetrics();
        awsRequestMetrics.startEvent(Field.ClientExecuteTime);
        Request<ListStreamsRequest> request = null;
        Response<ListStreamsResult> response = null;

        try {
            awsRequestMetrics.startEvent(Field.RequestMarshallTime);
            try {
                request = new ListStreamsRequestProtocolMarshaller(protocolFactory)
                        .marshall(super.beforeMarshalling(listStreamsRequest));
                // Binds the request metrics to the current request.
                request.setAWSRequestMetrics(awsRequestMetrics);
                request.addHandlerContext(HandlerContextKey.SIGNING_REGION, getSigningRegion());
                request.addHandlerContext(HandlerContextKey.SERVICE_ID, "DynamoDB Streams");
                request.addHandlerContext(HandlerContextKey.OPERATION_NAME, "ListStreams");
                request.addHandlerContext(HandlerContextKey.ADVANCED_CONFIG, advancedConfig);

            } finally {
                awsRequestMetrics.endEvent(Field.RequestMarshallTime);
            }

            HttpResponseHandler<AmazonWebServiceResponse<ListStreamsResult>> responseHandler = protocolFactory
                    .createResponseHandler(new JsonOperationMetadata().withPayloadJson(true)
                            .withHasStreamingSuccessResponse(false), new ListStreamsResultJsonUnmarshaller());
            response = invoke(request, responseHandler, executionContext);

            return response.getAwsResponse();

        } finally {

            endClientExecution(awsRequestMetrics, request, response);
        }
    }

    /**
     * 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.
     */
    public ResponseMetadata getCachedResponseMetadata(AmazonWebServiceRequest request) {
        return client.getResponseMetadataForRequest(request);
    }

    /**
     * Normal invoke with authentication. Credentials are required and may be overriden at the request level.
     **/
    private <X, Y extends AmazonWebServiceRequest> Response<X> invoke(Request<Y> request,
            HttpResponseHandler<AmazonWebServiceResponse<X>> responseHandler, ExecutionContext executionContext) {

        return invoke(request, responseHandler, executionContext, null, null);
    }

    /**
     * Normal invoke with authentication. Credentials are required and may be overriden at the request level.
     **/
    private <X, Y extends AmazonWebServiceRequest> Response<X> invoke(Request<Y> request,
            HttpResponseHandler<AmazonWebServiceResponse<X>> responseHandler, ExecutionContext executionContext,
            URI cachedEndpoint, URI uriFromEndpointTrait) {

        executionContext.setCredentialsProvider(
                CredentialUtils.getCredentialsProvider(request.getOriginalRequest(), awsCredentialsProvider));

        return doInvoke(request, responseHandler, executionContext, cachedEndpoint, uriFromEndpointTrait);
    }

    /**
     * Invoke with no authentication. Credentials are not required and any credentials set on the client or request will
     * be ignored for this operation.
     **/
    private <X, Y extends AmazonWebServiceRequest> Response<X> anonymousInvoke(Request<Y> request,
            HttpResponseHandler<AmazonWebServiceResponse<X>> responseHandler, ExecutionContext executionContext) {

        return doInvoke(request, responseHandler, executionContext, null, null);
    }

    /**
     * Invoke the request using the http client. Assumes credentials (or lack thereof) have been configured in the
     * ExecutionContext beforehand.
     **/
    private <X, Y extends AmazonWebServiceRequest> Response<X> doInvoke(Request<Y> request,
            HttpResponseHandler<AmazonWebServiceResponse<X>> responseHandler, ExecutionContext executionContext,
            URI discoveredEndpoint, URI uriFromEndpointTrait) {

        if (discoveredEndpoint != null) {
            request.setEndpoint(discoveredEndpoint);
            request.getOriginalRequest().getRequestClientOptions().appendUserAgent("endpoint-discovery");
        } else if (uriFromEndpointTrait != null) {
            request.setEndpoint(uriFromEndpointTrait);
        } else {
            request.setEndpoint(endpoint);
        }

        request.setTimeOffset(timeOffset);

        HttpResponseHandler<AmazonServiceException> errorResponseHandler = protocolFactory
                .createErrorResponseHandler(new JsonErrorResponseMetadata());

        return client.execute(request, responseHandler, errorResponseHandler, executionContext);
    }

    @com.amazonaws.annotation.SdkInternalApi
    static com.amazonaws.protocol.json.SdkJsonProtocolFactory getProtocolFactory() {
        return protocolFactory;
    }

}