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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.datapipeline;
import javax.annotation.Generated;
import com.amazonaws.*;
import com.amazonaws.regions.*;
import com.amazonaws.services.datapipeline.model.*;
/**
* Interface for accessing AWS Data Pipeline.
*
* Note: Do not directly implement this interface, new methods are added to it regularly. Extend from
* {@link com.amazonaws.services.datapipeline.AbstractDataPipeline} instead.
*
*
*
* AWS Data Pipeline configures and manages a data-driven workflow called a pipeline. AWS Data Pipeline handles the
* details of scheduling and ensuring that data dependencies are met so that your application can focus on processing
* the data.
*
*
* AWS Data Pipeline provides a JAR implementation of a task runner called AWS Data Pipeline Task Runner. AWS Data
* Pipeline Task Runner provides logic for common data management scenarios, such as performing database queries and
* running data analysis using Amazon Elastic MapReduce (Amazon EMR). You can use AWS Data Pipeline Task Runner as your
* task runner, or you can write your own task runner to provide custom data management.
*
*
* AWS Data Pipeline implements two main sets of functionality. Use the first set to create a pipeline and define data
* sources, schedules, dependencies, and the transforms to be performed on the data. Use the second set in your task
* runner application to receive the next task ready for processing. The logic for performing the task, such as querying
* the data, running data analysis, or converting the data from one format to another, is contained within the task
* runner. The task runner performs the task assigned to it by the web service, reporting progress to the web service as
* it does so. When the task is done, the task runner reports the final success or failure of the task to the web
* service.
*
*/
@Generated("com.amazonaws:aws-java-sdk-code-generator")
public interface DataPipeline {
/**
* The region metadata service name for computing region endpoints. You can use this value to retrieve metadata
* (such as supported regions) of the service.
*
* @see RegionUtils#getRegionsForService(String)
*/
String ENDPOINT_PREFIX = "datapipeline";
/**
* Overrides the default endpoint for this client ("datapipeline.us-east-1.amazonaws.com"). Callers can use this
* method to control which AWS region they want to work with.
*
* Callers can pass in just the endpoint (ex: "datapipeline.us-east-1.amazonaws.com") or a full URL, including the
* protocol (ex: "datapipeline.us-east-1.amazonaws.com"). If the protocol is not specified here, the default
* protocol from this client's {@link ClientConfiguration} will be used, which by default is HTTPS.
*
* For more information on using AWS regions with the AWS SDK for Java, and a complete list of all available
* endpoints for all AWS services, see: https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/java-dg-region-selection.html#region-selection-
* choose-endpoint
*
* This method is not threadsafe. An endpoint should be configured when the client is created and before any
* service requests are made. Changing it afterwards creates inevitable race conditions for any service requests in
* transit or retrying.
*
* @param endpoint
* The endpoint (ex: "datapipeline.us-east-1.amazonaws.com") or a full URL, including the protocol (ex:
* "datapipeline.us-east-1.amazonaws.com") of the region specific AWS endpoint this client will communicate
* with.
* @deprecated use {@link AwsClientBuilder#setEndpointConfiguration(AwsClientBuilder.EndpointConfiguration)} for
* example:
* {@code builder.setEndpointConfiguration(new EndpointConfiguration(endpoint, signingRegion));}
*/
@Deprecated
void setEndpoint(String endpoint);
/**
* An alternative to {@link DataPipeline#setEndpoint(String)}, sets the regional endpoint for this client's service
* calls. Callers can use this method to control which AWS region they want to work with.
*
* By default, all service endpoints in all regions use the https protocol. To use http instead, specify it in the
* {@link ClientConfiguration} supplied at construction.
*
* This method is not threadsafe. A region should be configured when the client is created and before any service
* requests are made. Changing it afterwards creates inevitable race conditions for any service requests in transit
* or retrying.
*
* @param region
* The region this client will communicate with. See {@link Region#getRegion(com.amazonaws.regions.Regions)}
* for accessing a given region. Must not be null and must be a region where the service is available.
*
* @see Region#getRegion(com.amazonaws.regions.Regions)
* @see Region#createClient(Class, com.amazonaws.auth.AWSCredentialsProvider, ClientConfiguration)
* @see Region#isServiceSupported(String)
* @deprecated use {@link AwsClientBuilder#setRegion(String)}
*/
@Deprecated
void setRegion(Region region);
/**
*
* Validates the specified pipeline and starts processing pipeline tasks. If the pipeline does not pass validation,
* activation fails.
*
*
* If you need to pause the pipeline to investigate an issue with a component, such as a data source or script, call
* DeactivatePipeline.
*
*
* To activate a finished pipeline, modify the end date for the pipeline and then activate it.
*
*
* @param activatePipelineRequest
* Contains the parameters for ActivatePipeline.
* @return Result of the ActivatePipeline operation returned by the service.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws PipelineDeletedException
* The specified pipeline has been deleted.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @sample DataPipeline.ActivatePipeline
* @see AWS
* API Documentation
*/
ActivatePipelineResult activatePipeline(ActivatePipelineRequest activatePipelineRequest);
/**
*
* Adds or modifies tags for the specified pipeline.
*
*
* @param addTagsRequest
* Contains the parameters for AddTags.
* @return Result of the AddTags operation returned by the service.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws PipelineDeletedException
* The specified pipeline has been deleted.
* @sample DataPipeline.AddTags
* @see AWS API
* Documentation
*/
AddTagsResult addTags(AddTagsRequest addTagsRequest);
/**
*
* Creates a new, empty pipeline. Use PutPipelineDefinition to populate the pipeline.
*
*
* @param createPipelineRequest
* Contains the parameters for CreatePipeline.
* @return Result of the CreatePipeline operation returned by the service.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @sample DataPipeline.CreatePipeline
* @see AWS
* API Documentation
*/
CreatePipelineResult createPipeline(CreatePipelineRequest createPipelineRequest);
/**
*
* Deactivates the specified running pipeline. The pipeline is set to the DEACTIVATING state until the
* deactivation process completes.
*
*
* To resume a deactivated pipeline, use ActivatePipeline. By default, the pipeline resumes from the last
* completed execution. Optionally, you can specify the date and time to resume the pipeline.
*
*
* @param deactivatePipelineRequest
* Contains the parameters for DeactivatePipeline.
* @return Result of the DeactivatePipeline operation returned by the service.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws PipelineDeletedException
* The specified pipeline has been deleted.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @sample DataPipeline.DeactivatePipeline
* @see AWS API Documentation
*/
DeactivatePipelineResult deactivatePipeline(DeactivatePipelineRequest deactivatePipelineRequest);
/**
*
* Deletes a pipeline, its pipeline definition, and its run history. AWS Data Pipeline attempts to cancel instances
* associated with the pipeline that are currently being processed by task runners.
*
*
* Deleting a pipeline cannot be undone. You cannot query or restore a deleted pipeline. To temporarily pause a
* pipeline instead of deleting it, call SetStatus with the status set to PAUSE on individual
* components. Components that are paused by SetStatus can be resumed.
*
*
* @param deletePipelineRequest
* Contains the parameters for DeletePipeline.
* @return Result of the DeletePipeline operation returned by the service.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @sample DataPipeline.DeletePipeline
* @see AWS
* API Documentation
*/
DeletePipelineResult deletePipeline(DeletePipelineRequest deletePipelineRequest);
/**
*
* Gets the object definitions for a set of objects associated with the pipeline. Object definitions are composed of
* a set of fields that define the properties of the object.
*
*
* @param describeObjectsRequest
* Contains the parameters for DescribeObjects.
* @return Result of the DescribeObjects operation returned by the service.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws PipelineDeletedException
* The specified pipeline has been deleted.
* @sample DataPipeline.DescribeObjects
* @see AWS
* API Documentation
*/
DescribeObjectsResult describeObjects(DescribeObjectsRequest describeObjectsRequest);
/**
*
* Retrieves metadata about one or more pipelines. The information retrieved includes the name of the pipeline, the
* pipeline identifier, its current state, and the user account that owns the pipeline. Using account credentials,
* you can retrieve metadata about pipelines that you or your IAM users have created. If you are using an IAM user
* account, you can retrieve metadata about only those pipelines for which you have read permissions.
*
*
* To retrieve the full pipeline definition instead of metadata about the pipeline, call
* GetPipelineDefinition.
*
*
* @param describePipelinesRequest
* Contains the parameters for DescribePipelines.
* @return Result of the DescribePipelines operation returned by the service.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws PipelineDeletedException
* The specified pipeline has been deleted.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @sample DataPipeline.DescribePipelines
* @see AWS
* API Documentation
*/
DescribePipelinesResult describePipelines(DescribePipelinesRequest describePipelinesRequest);
/**
*
* Task runners call EvaluateExpression to evaluate a string in the context of the specified object.
* For example, a task runner can evaluate SQL queries stored in Amazon S3.
*
*
* @param evaluateExpressionRequest
* Contains the parameters for EvaluateExpression.
* @return Result of the EvaluateExpression operation returned by the service.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws TaskNotFoundException
* The specified task was not found.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws PipelineDeletedException
* The specified pipeline has been deleted.
* @sample DataPipeline.EvaluateExpression
* @see AWS API Documentation
*/
EvaluateExpressionResult evaluateExpression(EvaluateExpressionRequest evaluateExpressionRequest);
/**
*
* Gets the definition of the specified pipeline. You can call GetPipelineDefinition to retrieve the
* pipeline definition that you provided using PutPipelineDefinition.
*
*
* @param getPipelineDefinitionRequest
* Contains the parameters for GetPipelineDefinition.
* @return Result of the GetPipelineDefinition operation returned by the service.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws PipelineDeletedException
* The specified pipeline has been deleted.
* @sample DataPipeline.GetPipelineDefinition
* @see AWS API Documentation
*/
GetPipelineDefinitionResult getPipelineDefinition(GetPipelineDefinitionRequest getPipelineDefinitionRequest);
/**
*
* Lists the pipeline identifiers for all active pipelines that you have permission to access.
*
*
* @param listPipelinesRequest
* Contains the parameters for ListPipelines.
* @return Result of the ListPipelines operation returned by the service.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @sample DataPipeline.ListPipelines
* @see AWS API
* Documentation
*/
ListPipelinesResult listPipelines(ListPipelinesRequest listPipelinesRequest);
/**
* Simplified method form for invoking the ListPipelines operation.
*
* @see #listPipelines(ListPipelinesRequest)
*/
ListPipelinesResult listPipelines();
/**
*
* Task runners call PollForTask to receive a task to perform from AWS Data Pipeline. The task runner
* specifies which tasks it can perform by setting a value for the workerGroup parameter. The task
* returned can come from any of the pipelines that match the workerGroup value passed in by the task
* runner and that was launched using the IAM user credentials specified by the task runner.
*
*
* If tasks are ready in the work queue, PollForTask returns a response immediately. If no tasks are
* available in the queue, PollForTask uses long-polling and holds on to a poll connection for up to a
* 90 seconds, during which time the first newly scheduled task is handed to the task runner. To accomodate this,
* set the socket timeout in your task runner to 90 seconds. The task runner should not call
* PollForTask again on the same workerGroup until it receives a response, and this can
* take up to 90 seconds.
*
*
* @param pollForTaskRequest
* Contains the parameters for PollForTask.
* @return Result of the PollForTask operation returned by the service.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @throws TaskNotFoundException
* The specified task was not found.
* @sample DataPipeline.PollForTask
* @see AWS API
* Documentation
*/
PollForTaskResult pollForTask(PollForTaskRequest pollForTaskRequest);
/**
*
* Adds tasks, schedules, and preconditions to the specified pipeline. You can use
* PutPipelineDefinition to populate a new pipeline.
*
*
* PutPipelineDefinition also validates the configuration as it adds it to the pipeline. Changes to the
* pipeline are saved unless one of the following three validation errors exists in the pipeline.
*
*
* - An object is missing a name or identifier field.
* - A string or reference field is empty.
* - The number of objects in the pipeline exceeds the maximum allowed objects.
* - The pipeline is in a FINISHED state.
*
*
* Pipeline object definitions are passed to the PutPipelineDefinition action and returned by the
* GetPipelineDefinition action.
*
*
* @param putPipelineDefinitionRequest
* Contains the parameters for PutPipelineDefinition.
* @return Result of the PutPipelineDefinition operation returned by the service.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws PipelineDeletedException
* The specified pipeline has been deleted.
* @sample DataPipeline.PutPipelineDefinition
* @see AWS API Documentation
*/
PutPipelineDefinitionResult putPipelineDefinition(PutPipelineDefinitionRequest putPipelineDefinitionRequest);
/**
*
* Queries the specified pipeline for the names of objects that match the specified set of conditions.
*
*
* @param queryObjectsRequest
* Contains the parameters for QueryObjects.
* @return Result of the QueryObjects operation returned by the service.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws PipelineDeletedException
* The specified pipeline has been deleted.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @sample DataPipeline.QueryObjects
* @see AWS API
* Documentation
*/
QueryObjectsResult queryObjects(QueryObjectsRequest queryObjectsRequest);
/**
*
* Removes existing tags from the specified pipeline.
*
*
* @param removeTagsRequest
* Contains the parameters for RemoveTags.
* @return Result of the RemoveTags operation returned by the service.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws PipelineDeletedException
* The specified pipeline has been deleted.
* @sample DataPipeline.RemoveTags
* @see AWS API
* Documentation
*/
RemoveTagsResult removeTags(RemoveTagsRequest removeTagsRequest);
/**
*
* Task runners call ReportTaskProgress when assigned a task to acknowledge that it has the task. If
* the web service does not receive this acknowledgement within 2 minutes, it assigns the task in a subsequent
* PollForTask call. After this initial acknowledgement, the task runner only needs to report progress every
* 15 minutes to maintain its ownership of the task. You can change this reporting time from 15 minutes by
* specifying a reportProgressTimeout field in your pipeline.
*
*
* If a task runner does not report its status after 5 minutes, AWS Data Pipeline assumes that the task runner is
* unable to process the task and reassigns the task in a subsequent response to PollForTask. Task runners
* should call ReportTaskProgress every 60 seconds.
*
*
* @param reportTaskProgressRequest
* Contains the parameters for ReportTaskProgress.
* @return Result of the ReportTaskProgress operation returned by the service.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @throws TaskNotFoundException
* The specified task was not found.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws PipelineDeletedException
* The specified pipeline has been deleted.
* @sample DataPipeline.ReportTaskProgress
* @see AWS API Documentation
*/
ReportTaskProgressResult reportTaskProgress(ReportTaskProgressRequest reportTaskProgressRequest);
/**
*
* Task runners call ReportTaskRunnerHeartbeat every 15 minutes to indicate that they are operational.
* If the AWS Data Pipeline Task Runner is launched on a resource managed by AWS Data Pipeline, the web service can
* use this call to detect when the task runner application has failed and restart a new instance.
*
*
* @param reportTaskRunnerHeartbeatRequest
* Contains the parameters for ReportTaskRunnerHeartbeat.
* @return Result of the ReportTaskRunnerHeartbeat operation returned by the service.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @sample DataPipeline.ReportTaskRunnerHeartbeat
* @see AWS API Documentation
*/
ReportTaskRunnerHeartbeatResult reportTaskRunnerHeartbeat(ReportTaskRunnerHeartbeatRequest reportTaskRunnerHeartbeatRequest);
/**
*
* Requests that the status of the specified physical or logical pipeline objects be updated in the specified
* pipeline. This update might not occur immediately, but is eventually consistent. The status that can be set
* depends on the type of object (for example, DataNode or Activity). You cannot perform this operation on
* FINISHED pipelines and attempting to do so returns InvalidRequestException.
*
*
* @param setStatusRequest
* Contains the parameters for SetStatus.
* @return Result of the SetStatus operation returned by the service.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws PipelineDeletedException
* The specified pipeline has been deleted.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @sample DataPipeline.SetStatus
* @see AWS API
* Documentation
*/
SetStatusResult setStatus(SetStatusRequest setStatusRequest);
/**
*
* Task runners call SetTaskStatus to notify AWS Data Pipeline that a task is completed and provide
* information about the final status. A task runner makes this call regardless of whether the task was sucessful. A
* task runner does not need to call SetTaskStatus for tasks that are canceled by the web service
* during a call to ReportTaskProgress.
*
*
* @param setTaskStatusRequest
* Contains the parameters for SetTaskStatus.
* @return Result of the SetTaskStatus operation returned by the service.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws TaskNotFoundException
* The specified task was not found.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws PipelineDeletedException
* The specified pipeline has been deleted.
* @sample DataPipeline.SetTaskStatus
* @see AWS API
* Documentation
*/
SetTaskStatusResult setTaskStatus(SetTaskStatusRequest setTaskStatusRequest);
/**
*
* Validates the specified pipeline definition to ensure that it is well formed and can be run without error.
*
*
* @param validatePipelineDefinitionRequest
* Contains the parameters for ValidatePipelineDefinition.
* @return Result of the ValidatePipelineDefinition operation returned by the service.
* @throws InternalServiceErrorException
* An internal service error occurred.
* @throws InvalidRequestException
* The request was not valid. Verify that your request was properly formatted, that the signature was
* generated with the correct credentials, and that you haven't exceeded any of the service limits for your
* account.
* @throws PipelineNotFoundException
* The specified pipeline was not found. Verify that you used the correct user and account identifiers.
* @throws PipelineDeletedException
* The specified pipeline has been deleted.
* @sample DataPipeline.ValidatePipelineDefinition
* @see AWS API Documentation
*/
ValidatePipelineDefinitionResult validatePipelineDefinition(ValidatePipelineDefinitionRequest validatePipelineDefinitionRequest);
/**
* Shuts down this client object, releasing any resources that might be held open. This is an optional method, and
* callers are not expected to call it, but can if they want to explicitly release any open resources. Once a client
* has been shutdown, it should not be used to make any more requests.
*/
void shutdown();
/**
* 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 a request.
*
* @param request
* The originally executed request.
*
* @return The response metadata for the specified request, or null if none is available.
*/
ResponseMetadata getCachedResponseMetadata(AmazonWebServiceRequest request);
}