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The AWS Java SDK for AWS Cost Explorer module holds the client classes that are used for communicating with AWS Cost Explorer Service
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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 software.amazon.awssdk.services.costexplorer;

import java.util.concurrent.CompletableFuture;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import software.amazon.awssdk.annotations.Generated;
import software.amazon.awssdk.annotations.SdkInternalApi;
import software.amazon.awssdk.awscore.client.handler.AwsAsyncClientHandler;
import software.amazon.awssdk.awscore.exception.AwsServiceException;
import software.amazon.awssdk.core.client.config.SdkClientConfiguration;
import software.amazon.awssdk.core.client.handler.AsyncClientHandler;
import software.amazon.awssdk.core.client.handler.ClientExecutionParams;
import software.amazon.awssdk.core.http.HttpResponseHandler;
import software.amazon.awssdk.protocols.core.ExceptionMetadata;
import software.amazon.awssdk.protocols.json.AwsJsonProtocol;
import software.amazon.awssdk.protocols.json.AwsJsonProtocolFactory;
import software.amazon.awssdk.protocols.json.BaseAwsJsonProtocolFactory;
import software.amazon.awssdk.protocols.json.JsonOperationMetadata;
import software.amazon.awssdk.services.costexplorer.model.BillExpirationException;
import software.amazon.awssdk.services.costexplorer.model.CostExplorerException;
import software.amazon.awssdk.services.costexplorer.model.DataUnavailableException;
import software.amazon.awssdk.services.costexplorer.model.GetCostAndUsageRequest;
import software.amazon.awssdk.services.costexplorer.model.GetCostAndUsageResponse;
import software.amazon.awssdk.services.costexplorer.model.GetCostForecastRequest;
import software.amazon.awssdk.services.costexplorer.model.GetCostForecastResponse;
import software.amazon.awssdk.services.costexplorer.model.GetDimensionValuesRequest;
import software.amazon.awssdk.services.costexplorer.model.GetDimensionValuesResponse;
import software.amazon.awssdk.services.costexplorer.model.GetReservationCoverageRequest;
import software.amazon.awssdk.services.costexplorer.model.GetReservationCoverageResponse;
import software.amazon.awssdk.services.costexplorer.model.GetReservationPurchaseRecommendationRequest;
import software.amazon.awssdk.services.costexplorer.model.GetReservationPurchaseRecommendationResponse;
import software.amazon.awssdk.services.costexplorer.model.GetReservationUtilizationRequest;
import software.amazon.awssdk.services.costexplorer.model.GetReservationUtilizationResponse;
import software.amazon.awssdk.services.costexplorer.model.GetTagsRequest;
import software.amazon.awssdk.services.costexplorer.model.GetTagsResponse;
import software.amazon.awssdk.services.costexplorer.model.InvalidNextTokenException;
import software.amazon.awssdk.services.costexplorer.model.LimitExceededException;
import software.amazon.awssdk.services.costexplorer.model.RequestChangedException;
import software.amazon.awssdk.services.costexplorer.transform.GetCostAndUsageRequestMarshaller;
import software.amazon.awssdk.services.costexplorer.transform.GetCostForecastRequestMarshaller;
import software.amazon.awssdk.services.costexplorer.transform.GetDimensionValuesRequestMarshaller;
import software.amazon.awssdk.services.costexplorer.transform.GetReservationCoverageRequestMarshaller;
import software.amazon.awssdk.services.costexplorer.transform.GetReservationPurchaseRecommendationRequestMarshaller;
import software.amazon.awssdk.services.costexplorer.transform.GetReservationUtilizationRequestMarshaller;
import software.amazon.awssdk.services.costexplorer.transform.GetTagsRequestMarshaller;
import software.amazon.awssdk.utils.CompletableFutureUtils;

/**
 * Internal implementation of {@link CostExplorerAsyncClient}.
 *
 * @see CostExplorerAsyncClient#builder()
 */
@Generated("software.amazon.awssdk:codegen")
@SdkInternalApi
final class DefaultCostExplorerAsyncClient implements CostExplorerAsyncClient {
    private static final Logger log = LoggerFactory.getLogger(DefaultCostExplorerAsyncClient.class);

    private final AsyncClientHandler clientHandler;

    private final AwsJsonProtocolFactory protocolFactory;

    private final SdkClientConfiguration clientConfiguration;

    protected DefaultCostExplorerAsyncClient(SdkClientConfiguration clientConfiguration) {
        this.clientHandler = new AwsAsyncClientHandler(clientConfiguration);
        this.clientConfiguration = clientConfiguration;
        this.protocolFactory = init(AwsJsonProtocolFactory.builder()).build();
    }

    @Override
    public final String serviceName() {
        return SERVICE_NAME;
    }

    /**
     * 
     * Retrieves cost and usage metrics for your account. You can specify which cost and usage-related metric, such as
     * BlendedCosts or UsageQuantity, that you want the request to return. You can also filter
     * and group your data by various dimensions, such as SERVICE or AZ, in a specific time
     * range. For a complete list of valid dimensions, see the GetDimensionValues operation. Master accounts in an organization in AWS Organizations have access to all
     * member accounts.
     * 
     *
     * @param getCostAndUsageRequest
     * @return A Java Future containing the result of the GetCostAndUsage operation returned by the service.

     *         The CompletableFuture returned by this method can be completed exceptionally with the following
     *         exceptions.
     *         
     *         LimitExceededException You made too many calls in a short period of time. Try again later.
     *         BillExpirationException The requested report expired. Update the date interval and try again.
     *         DataUnavailableException The requested data is unavailable.
     *         InvalidNextTokenException The pagination token is invalid. Try again without a pagination token.
     *         RequestChangedException Your request parameters changed between pages. Try again with the old
     *         parameters or without a pagination token.
     *         SdkException Base class for all exceptions that can be thrown by the SDK (both service and client).
     *         Can be used for catch all scenarios.
     *         SdkClientException If any client side error occurs such as an IO related failure, failure to get
     *         credentials, etc.
     *         CostExplorerException Base class for all service exceptions. Unknown exceptions will be thrown as an
     *         instance of this type.
     *         
     * @sample CostExplorerAsyncClient.GetCostAndUsage
     * @see AWS API
     *      Documentation
     */
    @Override
    public CompletableFuture getCostAndUsage(GetCostAndUsageRequest getCostAndUsageRequest) {
        try {
            JsonOperationMetadata operationMetadata = JsonOperationMetadata.builder().hasStreamingSuccessResponse(false)
                    .isPayloadJson(true).build();

            HttpResponseHandler responseHandler = protocolFactory.createResponseHandler(
                    operationMetadata, GetCostAndUsageResponse::builder);

            HttpResponseHandler errorResponseHandler = createErrorResponseHandler(protocolFactory,
                    operationMetadata);

            CompletableFuture executeFuture = clientHandler
                    .execute(new ClientExecutionParams()
                            .withOperationName("GetCostAndUsage")
                            .withMarshaller(new GetCostAndUsageRequestMarshaller(protocolFactory))
                            .withResponseHandler(responseHandler).withErrorResponseHandler(errorResponseHandler)
                            .withInput(getCostAndUsageRequest));
            return executeFuture;
        } catch (Throwable t) {
            return CompletableFutureUtils.failedFuture(t);
        }
    }

    /**
     * 
     * Retrieves a forecast for how much Amazon Web Services predicts that you will spend over the forecast time period
     * that you select, based on your past costs.
     * 
     *
     * @param getCostForecastRequest
     * @return A Java Future containing the result of the GetCostForecast operation returned by the service.

     *         The CompletableFuture returned by this method can be completed exceptionally with the following
     *         exceptions.
     *         
     *         LimitExceededException You made too many calls in a short period of time. Try again later.
     *         DataUnavailableException The requested data is unavailable.
     *         SdkException Base class for all exceptions that can be thrown by the SDK (both service and client).
     *         Can be used for catch all scenarios.
     *         SdkClientException If any client side error occurs such as an IO related failure, failure to get
     *         credentials, etc.
     *         CostExplorerException Base class for all service exceptions. Unknown exceptions will be thrown as an
     *         instance of this type.
     *         
     * @sample CostExplorerAsyncClient.GetCostForecast
     * @see AWS API
     *      Documentation
     */
    @Override
    public CompletableFuture getCostForecast(GetCostForecastRequest getCostForecastRequest) {
        try {
            JsonOperationMetadata operationMetadata = JsonOperationMetadata.builder().hasStreamingSuccessResponse(false)
                    .isPayloadJson(true).build();

            HttpResponseHandler responseHandler = protocolFactory.createResponseHandler(
                    operationMetadata, GetCostForecastResponse::builder);

            HttpResponseHandler errorResponseHandler = createErrorResponseHandler(protocolFactory,
                    operationMetadata);

            CompletableFuture executeFuture = clientHandler
                    .execute(new ClientExecutionParams()
                            .withOperationName("GetCostForecast")
                            .withMarshaller(new GetCostForecastRequestMarshaller(protocolFactory))
                            .withResponseHandler(responseHandler).withErrorResponseHandler(errorResponseHandler)
                            .withInput(getCostForecastRequest));
            return executeFuture;
        } catch (Throwable t) {
            return CompletableFutureUtils.failedFuture(t);
        }
    }

    /**
     * 
     * Retrieves all available filter values for a specified filter over a period of time. You can search the dimension
     * values for an arbitrary string.
     * 
     *
     * @param getDimensionValuesRequest
     * @return A Java Future containing the result of the GetDimensionValues operation returned by the service.

     *         The CompletableFuture returned by this method can be completed exceptionally with the following
     *         exceptions.
     *         
     *         LimitExceededException You made too many calls in a short period of time. Try again later.
     *         BillExpirationException The requested report expired. Update the date interval and try again.
     *         DataUnavailableException The requested data is unavailable.
     *         InvalidNextTokenException The pagination token is invalid. Try again without a pagination token.
     *         RequestChangedException Your request parameters changed between pages. Try again with the old
     *         parameters or without a pagination token.
     *         SdkException Base class for all exceptions that can be thrown by the SDK (both service and client).
     *         Can be used for catch all scenarios.
     *         SdkClientException If any client side error occurs such as an IO related failure, failure to get
     *         credentials, etc.
     *         CostExplorerException Base class for all service exceptions. Unknown exceptions will be thrown as an
     *         instance of this type.
     *         
     * @sample CostExplorerAsyncClient.GetDimensionValues
     * @see AWS API
     *      Documentation
     */
    @Override
    public CompletableFuture getDimensionValues(GetDimensionValuesRequest getDimensionValuesRequest) {
        try {
            JsonOperationMetadata operationMetadata = JsonOperationMetadata.builder().hasStreamingSuccessResponse(false)
                    .isPayloadJson(true).build();

            HttpResponseHandler responseHandler = protocolFactory.createResponseHandler(
                    operationMetadata, GetDimensionValuesResponse::builder);

            HttpResponseHandler errorResponseHandler = createErrorResponseHandler(protocolFactory,
                    operationMetadata);

            CompletableFuture executeFuture = clientHandler
                    .execute(new ClientExecutionParams()
                            .withOperationName("GetDimensionValues")
                            .withMarshaller(new GetDimensionValuesRequestMarshaller(protocolFactory))
                            .withResponseHandler(responseHandler).withErrorResponseHandler(errorResponseHandler)
                            .withInput(getDimensionValuesRequest));
            return executeFuture;
        } catch (Throwable t) {
            return CompletableFutureUtils.failedFuture(t);
        }
    }

    /**
     * 
     * Retrieves the reservation coverage for your account. This enables you to see how much of your Amazon Elastic
     * Compute Cloud, Amazon ElastiCache, Amazon Relational Database Service, or Amazon Redshift usage is covered by a
     * reservation. An organization's master account can see the coverage of the associated member accounts. For any
     * time period, you can filter data about reservation usage by the following dimensions:
     * 
     * 
     * 
     * 
     * AZ
     * 
     * 
     * 
     * 
     * CACHE_ENGINE
     * 
     * 
     * 
     * 
     * DATABASE_ENGINE
     * 
     * 
     * 
     * 
     * DEPLOYMENT_OPTION
     * 
     * 
     * 
     * 
     * INSTANCE_TYPE
     * 
     * 
     * 
     * 
     * LINKED_ACCOUNT
     * 
     * 
     * 
     * 
     * OPERATING_SYSTEM
     * 
     * 
     * 
     * 
     * PLATFORM
     * 
     * 
     * 
     * 
     * REGION
     * 
     * 
     * 
     * 
     * SERVICE
     * 
     * 
     * 
     * 
     * TAG
     * 
     * 
     * 
     * 
     * TENANCY
     * 
     * 
     * 
     * 
     * To determine valid values for a dimension, use the GetDimensionValues operation.
     * 
     *
     * @param getReservationCoverageRequest
     *        You can use the following request parameters to query for how much of your instance usage a reservation
     *        covered.
     * @return A Java Future containing the result of the GetReservationCoverage operation returned by the service.

     *         The CompletableFuture returned by this method can be completed exceptionally with the following
     *         exceptions.
     *         
     *         LimitExceededException You made too many calls in a short period of time. Try again later.
     *         DataUnavailableException The requested data is unavailable.
     *         InvalidNextTokenException The pagination token is invalid. Try again without a pagination token.
     *         SdkException Base class for all exceptions that can be thrown by the SDK (both service and client).
     *         Can be used for catch all scenarios.
     *         SdkClientException If any client side error occurs such as an IO related failure, failure to get
     *         credentials, etc.
     *         CostExplorerException Base class for all service exceptions. Unknown exceptions will be thrown as an
     *         instance of this type.
     *         
     * @sample CostExplorerAsyncClient.GetReservationCoverage
     * @see AWS API
     *      Documentation
     */
    @Override
    public CompletableFuture getReservationCoverage(
            GetReservationCoverageRequest getReservationCoverageRequest) {
        try {
            JsonOperationMetadata operationMetadata = JsonOperationMetadata.builder().hasStreamingSuccessResponse(false)
                    .isPayloadJson(true).build();

            HttpResponseHandler responseHandler = protocolFactory.createResponseHandler(
                    operationMetadata, GetReservationCoverageResponse::builder);

            HttpResponseHandler errorResponseHandler = createErrorResponseHandler(protocolFactory,
                    operationMetadata);

            CompletableFuture executeFuture = clientHandler
                    .execute(new ClientExecutionParams()
                            .withOperationName("GetReservationCoverage")
                            .withMarshaller(new GetReservationCoverageRequestMarshaller(protocolFactory))
                            .withResponseHandler(responseHandler).withErrorResponseHandler(errorResponseHandler)
                            .withInput(getReservationCoverageRequest));
            return executeFuture;
        } catch (Throwable t) {
            return CompletableFutureUtils.failedFuture(t);
        }
    }

    /**
     * 
     * Gets recommendations for which reservations to purchase. These recommendations could help you reduce your costs.
     * Reservations provide a discounted hourly rate (up to 75%) compared to On-Demand pricing.
     * 
     * 
     * AWS generates your recommendations by identifying your On-Demand usage during a specific time period and
     * collecting your usage into categories that are eligible for a reservation. After AWS has these categories, it
     * simulates every combination of reservations in each category of usage to identify the best number of each type of
     * RI to purchase to maximize your estimated savings.
     * 
     * 
     * For example, AWS automatically aggregates your Amazon EC2 Linux, shared tenancy, and c4 family usage in the US
     * West (Oregon) Region and recommends that you buy size-flexible regional reservations to apply to the c4 family
     * usage. AWS recommends the smallest size instance in an instance family. This makes it easier to purchase a
     * size-flexible RI. AWS also shows the equal number of normalized units so that you can purchase any instance size
     * that you want. For this example, your RI recommendation would be for c4.large because that is the
     * smallest size instance in the c4 instance family.
     * 
     *
     * @param getReservationPurchaseRecommendationRequest
     * @return A Java Future containing the result of the GetReservationPurchaseRecommendation operation returned by the
     *         service.

     *         The CompletableFuture returned by this method can be completed exceptionally with the following
     *         exceptions.
     *         
     *         LimitExceededException You made too many calls in a short period of time. Try again later.
     *         DataUnavailableException The requested data is unavailable.
     *         InvalidNextTokenException The pagination token is invalid. Try again without a pagination token.
     *         SdkException Base class for all exceptions that can be thrown by the SDK (both service and client).
     *         Can be used for catch all scenarios.
     *         SdkClientException If any client side error occurs such as an IO related failure, failure to get
     *         credentials, etc.
     *         CostExplorerException Base class for all service exceptions. Unknown exceptions will be thrown as an
     *         instance of this type.
     *         
     * @sample CostExplorerAsyncClient.GetReservationPurchaseRecommendation
     * @see AWS API Documentation
     */
    @Override
    public CompletableFuture getReservationPurchaseRecommendation(
            GetReservationPurchaseRecommendationRequest getReservationPurchaseRecommendationRequest) {
        try {
            JsonOperationMetadata operationMetadata = JsonOperationMetadata.builder().hasStreamingSuccessResponse(false)
                    .isPayloadJson(true).build();

            HttpResponseHandler responseHandler = protocolFactory
                    .createResponseHandler(operationMetadata, GetReservationPurchaseRecommendationResponse::builder);

            HttpResponseHandler errorResponseHandler = createErrorResponseHandler(protocolFactory,
                    operationMetadata);

            CompletableFuture executeFuture = clientHandler
                    .execute(new ClientExecutionParams()
                            .withOperationName("GetReservationPurchaseRecommendation")
                            .withMarshaller(new GetReservationPurchaseRecommendationRequestMarshaller(protocolFactory))
                            .withResponseHandler(responseHandler).withErrorResponseHandler(errorResponseHandler)
                            .withInput(getReservationPurchaseRecommendationRequest));
            return executeFuture;
        } catch (Throwable t) {
            return CompletableFutureUtils.failedFuture(t);
        }
    }

    /**
     * 
     * Retrieves the reservation utilization for your account. Master accounts in an organization have access to member
     * accounts. You can filter data by dimensions in a time period. You can use GetDimensionValues to
     * determine the possible dimension values. Currently, you can group only by SUBSCRIPTION_ID.
     * 
     *
     * @param getReservationUtilizationRequest
     * @return A Java Future containing the result of the GetReservationUtilization operation returned by the service.

     *         The CompletableFuture returned by this method can be completed exceptionally with the following
     *         exceptions.
     *         
     *         LimitExceededException You made too many calls in a short period of time. Try again later.
     *         DataUnavailableException The requested data is unavailable.
     *         InvalidNextTokenException The pagination token is invalid. Try again without a pagination token.
     *         SdkException Base class for all exceptions that can be thrown by the SDK (both service and client).
     *         Can be used for catch all scenarios.
     *         SdkClientException If any client side error occurs such as an IO related failure, failure to get
     *         credentials, etc.
     *         CostExplorerException Base class for all service exceptions. Unknown exceptions will be thrown as an
     *         instance of this type.
     *         
     * @sample CostExplorerAsyncClient.GetReservationUtilization
     * @see AWS
     *      API Documentation
     */
    @Override
    public CompletableFuture getReservationUtilization(
            GetReservationUtilizationRequest getReservationUtilizationRequest) {
        try {
            JsonOperationMetadata operationMetadata = JsonOperationMetadata.builder().hasStreamingSuccessResponse(false)
                    .isPayloadJson(true).build();

            HttpResponseHandler responseHandler = protocolFactory.createResponseHandler(
                    operationMetadata, GetReservationUtilizationResponse::builder);

            HttpResponseHandler errorResponseHandler = createErrorResponseHandler(protocolFactory,
                    operationMetadata);

            CompletableFuture executeFuture = clientHandler
                    .execute(new ClientExecutionParams()
                            .withOperationName("GetReservationUtilization")
                            .withMarshaller(new GetReservationUtilizationRequestMarshaller(protocolFactory))
                            .withResponseHandler(responseHandler).withErrorResponseHandler(errorResponseHandler)
                            .withInput(getReservationUtilizationRequest));
            return executeFuture;
        } catch (Throwable t) {
            return CompletableFutureUtils.failedFuture(t);
        }
    }

    /**
     * 
     * Queries for available tag keys and tag values for a specified period. You can search the tag values for an
     * arbitrary string.
     * 
     *
     * @param getTagsRequest
     * @return A Java Future containing the result of the GetTags operation returned by the service.

     *         The CompletableFuture returned by this method can be completed exceptionally with the following
     *         exceptions.
     *         
     *         LimitExceededException You made too many calls in a short period of time. Try again later.
     *         BillExpirationException The requested report expired. Update the date interval and try again.
     *         DataUnavailableException The requested data is unavailable.
     *         InvalidNextTokenException The pagination token is invalid. Try again without a pagination token.
     *         RequestChangedException Your request parameters changed between pages. Try again with the old
     *         parameters or without a pagination token.
     *         SdkException Base class for all exceptions that can be thrown by the SDK (both service and client).
     *         Can be used for catch all scenarios.
     *         SdkClientException If any client side error occurs such as an IO related failure, failure to get
     *         credentials, etc.
     *         CostExplorerException Base class for all service exceptions. Unknown exceptions will be thrown as an
     *         instance of this type.
     *         
     * @sample CostExplorerAsyncClient.GetTags
     * @see AWS API
     *      Documentation
     */
    @Override
    public CompletableFuture getTags(GetTagsRequest getTagsRequest) {
        try {
            JsonOperationMetadata operationMetadata = JsonOperationMetadata.builder().hasStreamingSuccessResponse(false)
                    .isPayloadJson(true).build();

            HttpResponseHandler responseHandler = protocolFactory.createResponseHandler(operationMetadata,
                    GetTagsResponse::builder);

            HttpResponseHandler errorResponseHandler = createErrorResponseHandler(protocolFactory,
                    operationMetadata);

            CompletableFuture executeFuture = clientHandler
                    .execute(new ClientExecutionParams().withOperationName("GetTags")
                            .withMarshaller(new GetTagsRequestMarshaller(protocolFactory)).withResponseHandler(responseHandler)
                            .withErrorResponseHandler(errorResponseHandler).withInput(getTagsRequest));
            return executeFuture;
        } catch (Throwable t) {
            return CompletableFutureUtils.failedFuture(t);
        }
    }

    @Override
    public void close() {
        clientHandler.close();
    }

    private > T init(T builder) {
        return builder
                .clientConfiguration(clientConfiguration)
                .defaultServiceExceptionSupplier(CostExplorerException::builder)
                .protocol(AwsJsonProtocol.AWS_JSON)
                .protocolVersion("1.1")
                .registerModeledException(
                        ExceptionMetadata.builder().errorCode("RequestChangedException")
                                .exceptionBuilderSupplier(RequestChangedException::builder).build())
                .registerModeledException(
                        ExceptionMetadata.builder().errorCode("DataUnavailableException")
                                .exceptionBuilderSupplier(DataUnavailableException::builder).build())
                .registerModeledException(
                        ExceptionMetadata.builder().errorCode("BillExpirationException")
                                .exceptionBuilderSupplier(BillExpirationException::builder).build())
                .registerModeledException(
                        ExceptionMetadata.builder().errorCode("InvalidNextTokenException")
                                .exceptionBuilderSupplier(InvalidNextTokenException::builder).build())
                .registerModeledException(
                        ExceptionMetadata.builder().errorCode("LimitExceededException")
                                .exceptionBuilderSupplier(LimitExceededException::builder).build());
    }

    private HttpResponseHandler createErrorResponseHandler(BaseAwsJsonProtocolFactory protocolFactory,
            JsonOperationMetadata operationMetadata) {
        return protocolFactory.createErrorResponseHandler(operationMetadata);
    }
}