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/*
 * Copyright 2010-2016 Amazon.com, Inc. or its affiliates. All Rights
 * Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */
package com.amazonaws.services.iotdata;
import com.amazonaws.services.iotdata.model.*;
import com.amazonaws.annotation.ThreadSafe;
/**
 * Interface for accessing AWS IoT Data Plane asynchronously. Each asynchronous
 * method will return a Java Future object representing the asynchronous
 * operation; overloads which accept an {@code AsyncHandler} can be used to
 * receive notification when an asynchronous operation completes.
 * 
 * AWS IoT 
 * 
 * AWS IoT-Data enables secure, bi-directional communication between
 * Internet-connected things (such as sensors, actuators, embedded devices, or
 * smart appliances) and the AWS cloud. It implements a broker for applications
 * and things to publish messages over HTTP (Publish) and retrieve, update, and
 * delete thing shadows. A thing shadow is a persistent representation of your
 * things and their state in the AWS cloud.
 * 
 */
@ThreadSafe
public class AWSIotDataAsyncClient extends AWSIotDataClient implements
        AWSIotDataAsync {
    private static final int DEFAULT_THREAD_POOL_SIZE = 50;
    private final java.util.concurrent.ExecutorService executorService;
    /**
     * Constructs a new asynchronous client to invoke service methods on AWS IoT
     * Data Plane. A credentials provider chain will be used that searches for
     * credentials in this order:
     * 
     * - Environment Variables - AWS_ACCESS_KEY_ID and AWS_SECRET_KEY
 
     * - Java System Properties - aws.accessKeyId and aws.secretKey
 
     * - Credential profiles file at the default location (~/.aws/credentials)
     * shared by all AWS SDKs and the AWS CLI
 
     * - Instance profile credentials delivered through the Amazon EC2
     * metadata service
 
     * 
     * 
     * Asynchronous methods are delegated to a fixed-size thread pool containing
     * 50 threads (to match the default maximum number of concurrent connections
     * to the service).
     *
     * @see com.amazonaws.auth.DefaultAWSCredentialsProviderChain
     * @see java.util.concurrent.Executors#newFixedThreadPool(int)
     */
    public AWSIotDataAsyncClient() {
        this(new com.amazonaws.auth.DefaultAWSCredentialsProviderChain());
    }
    /**
     * Constructs a new asynchronous client to invoke service methods on AWS IoT
     * Data Plane. A credentials provider chain will be used that searches for
     * credentials in this order:
     * 
     * - Environment Variables - AWS_ACCESS_KEY_ID and AWS_SECRET_KEY
 
     * - Java System Properties - aws.accessKeyId and aws.secretKey
 
     * - Credential profiles file at the default location (~/.aws/credentials)
     * shared by all AWS SDKs and the AWS CLI
 
     * - Instance profile credentials delivered through the Amazon EC2
     * metadata service
 
     * 
     * 
     * Asynchronous methods are delegated to a fixed-size thread pool containing
     * a number of threads equal to the maximum number of concurrent connections
     * configured via {@code ClientConfiguration.getMaxConnections()}.
     *
     * @param clientConfiguration
     *        The client configuration options controlling how this client
     *        connects to AWS IoT Data Plane (ex: proxy settings, retry counts,
     *        etc).
     *
     * @see com.amazonaws.auth.DefaultAWSCredentialsProviderChain
     * @see java.util.concurrent.Executors#newFixedThreadPool(int)
     */
    public AWSIotDataAsyncClient(
            com.amazonaws.ClientConfiguration clientConfiguration) {
        this(new com.amazonaws.auth.DefaultAWSCredentialsProviderChain(),
                clientConfiguration, java.util.concurrent.Executors
                        .newFixedThreadPool(clientConfiguration
                                .getMaxConnections()));
    }
    /**
     * Constructs a new asynchronous client to invoke service methods on AWS IoT
     * Data Plane using the specified AWS account credentials.
     * 
     * Asynchronous methods are delegated to a fixed-size thread pool containing
     * 50 threads (to match the default maximum number of concurrent connections
     * to the service).
     *
     * @param awsCredentials
     *        The AWS credentials (access key ID and secret key) to use when
     *        authenticating with AWS services.
     * @see java.util.concurrent.Executors#newFixedThreadPool(int)
     */
    public AWSIotDataAsyncClient(
            com.amazonaws.auth.AWSCredentials awsCredentials) {
        this(awsCredentials, java.util.concurrent.Executors
                .newFixedThreadPool(DEFAULT_THREAD_POOL_SIZE));
    }
    /**
     * Constructs a new asynchronous client to invoke service methods on AWS IoT
     * Data Plane using the specified AWS account credentials and executor
     * service. Default client settings will be used.
     *
     * @param awsCredentials
     *        The AWS credentials (access key ID and secret key) to use when
     *        authenticating with AWS services.
     * @param executorService
     *        The executor service by which all asynchronous requests will be
     *        executed.
     */
    public AWSIotDataAsyncClient(
            com.amazonaws.auth.AWSCredentials awsCredentials,
            java.util.concurrent.ExecutorService executorService) {
        this(awsCredentials, configFactory.getConfig(), executorService);
    }
    /**
     * Constructs a new asynchronous client to invoke service methods on AWS IoT
     * Data Plane using the specified AWS account credentials, executor service,
     * and client configuration options.
     *
     * @param awsCredentials
     *        The AWS credentials (access key ID and secret key) to use when
     *        authenticating with AWS services.
     * @param clientConfiguration
     *        Client configuration options (ex: max retry limit, proxy settings,
     *        etc).
     * @param executorService
     *        The executor service by which all asynchronous requests will be
     *        executed.
     */
    public AWSIotDataAsyncClient(
            com.amazonaws.auth.AWSCredentials awsCredentials,
            com.amazonaws.ClientConfiguration clientConfiguration,
            java.util.concurrent.ExecutorService executorService) {
        super(awsCredentials, clientConfiguration);
        this.executorService = executorService;
    }
    /**
     * Constructs a new asynchronous client to invoke service methods on AWS IoT
     * Data Plane using the specified AWS account credentials provider. Default
     * client settings will be used.
     * 
     * Asynchronous methods are delegated to a fixed-size thread pool containing
     * 50 threads (to match the default maximum number of concurrent connections
     * to the service).
     *
     * @param awsCredentialsProvider
     *        The AWS credentials provider which will provide credentials to
     *        authenticate requests with AWS services.
     * @see java.util.concurrent.Executors#newFixedThreadPool(int)
     */
    public AWSIotDataAsyncClient(
            com.amazonaws.auth.AWSCredentialsProvider awsCredentialsProvider) {
        this(awsCredentialsProvider, java.util.concurrent.Executors
                .newFixedThreadPool(DEFAULT_THREAD_POOL_SIZE));
    }
    /**
     * Constructs a new asynchronous client to invoke service methods on AWS IoT
     * Data Plane using the provided AWS account credentials provider and client
     * configuration options.
     * 
     * Asynchronous methods are delegated to a fixed-size thread pool containing
     * a number of threads equal to the maximum number of concurrent connections
     * configured via {@code ClientConfiguration.getMaxConnections()}.
     *
     * @param awsCredentialsProvider
     *        The AWS credentials provider which will provide credentials to
     *        authenticate requests with AWS services.
     * @param clientConfiguration
     *        Client configuration options (ex: max retry limit, proxy settings,
     *        etc).
     *
     * @see com.amazonaws.auth.DefaultAWSCredentialsProviderChain
     * @see java.util.concurrent.Executors#newFixedThreadPool(int)
     */
    public AWSIotDataAsyncClient(
            com.amazonaws.auth.AWSCredentialsProvider awsCredentialsProvider,
            com.amazonaws.ClientConfiguration clientConfiguration) {
        this(awsCredentialsProvider, clientConfiguration,
                java.util.concurrent.Executors
                        .newFixedThreadPool(clientConfiguration
                                .getMaxConnections()));
    }
    /**
     * Constructs a new asynchronous client to invoke service methods on AWS IoT
     * Data Plane using the specified AWS account credentials provider and
     * executor service. Default client settings will be used.
     *
     * @param awsCredentialsProvider
     *        The AWS credentials provider which will provide credentials to
     *        authenticate requests with AWS services.
     * @param executorService
     *        The executor service by which all asynchronous requests will be
     *        executed.
     */
    public AWSIotDataAsyncClient(
            com.amazonaws.auth.AWSCredentialsProvider awsCredentialsProvider,
            java.util.concurrent.ExecutorService executorService) {
        this(awsCredentialsProvider, configFactory.getConfig(), executorService);
    }
    /**
     * Constructs a new asynchronous client to invoke service methods on AWS IoT
     * Data Plane using the specified AWS account credentials provider, executor
     * service, and client configuration options.
     *
     * @param awsCredentialsProvider
     *        The AWS credentials provider which will provide credentials to
     *        authenticate requests with AWS services.
     * @param clientConfiguration
     *        Client configuration options (ex: max retry limit, proxy settings,
     *        etc).
     * @param executorService
     *        The executor service by which all asynchronous requests will be
     *        executed.
     */
    public AWSIotDataAsyncClient(
            com.amazonaws.auth.AWSCredentialsProvider awsCredentialsProvider,
            com.amazonaws.ClientConfiguration clientConfiguration,
            java.util.concurrent.ExecutorService executorService) {
        super(awsCredentialsProvider, clientConfiguration);
        this.executorService = executorService;
    }
    /**
     * Returns the executor service used by this client to execute async
     * requests.
     *
     * @return The executor service used by this client to execute async
     *         requests.
     */
    public java.util.concurrent.ExecutorService getExecutorService() {
        return executorService;
    }
    @Override
    public java.util.concurrent.Future deleteThingShadowAsync(
            DeleteThingShadowRequest request) {
        return deleteThingShadowAsync(request, null);
    }
    @Override
    public java.util.concurrent.Future deleteThingShadowAsync(
            final DeleteThingShadowRequest request,
            final com.amazonaws.handlers.AsyncHandler asyncHandler) {
        return executorService
                .submit(new java.util.concurrent.Callable() {
                    @Override
                    public DeleteThingShadowResult call() throws Exception {
                        DeleteThingShadowResult result;
                        try {
                            result = deleteThingShadow(request);
                        } catch (Exception ex) {
                            if (asyncHandler != null) {
                                asyncHandler.onError(ex);
                            }
                            throw ex;
                        }
                        if (asyncHandler != null) {
                            asyncHandler.onSuccess(request, result);
                        }
                        return result;
                    }
                });
    }
    @Override
    public java.util.concurrent.Future getThingShadowAsync(
            GetThingShadowRequest request) {
        return getThingShadowAsync(request, null);
    }
    @Override
    public java.util.concurrent.Future getThingShadowAsync(
            final GetThingShadowRequest request,
            final com.amazonaws.handlers.AsyncHandler asyncHandler) {
        return executorService
                .submit(new java.util.concurrent.Callable() {
                    @Override
                    public GetThingShadowResult call() throws Exception {
                        GetThingShadowResult result;
                        try {
                            result = getThingShadow(request);
                        } catch (Exception ex) {
                            if (asyncHandler != null) {
                                asyncHandler.onError(ex);
                            }
                            throw ex;
                        }
                        if (asyncHandler != null) {
                            asyncHandler.onSuccess(request, result);
                        }
                        return result;
                    }
                });
    }
    @Override
    public java.util.concurrent.Future publishAsync(
            PublishRequest request) {
        return publishAsync(request, null);
    }
    @Override
    public java.util.concurrent.Future publishAsync(
            final PublishRequest request,
            final com.amazonaws.handlers.AsyncHandler asyncHandler) {
        return executorService
                .submit(new java.util.concurrent.Callable() {
                    @Override
                    public PublishResult call() throws Exception {
                        PublishResult result;
                        try {
                            result = publish(request);
                        } catch (Exception ex) {
                            if (asyncHandler != null) {
                                asyncHandler.onError(ex);
                            }
                            throw ex;
                        }
                        if (asyncHandler != null) {
                            asyncHandler.onSuccess(request, result);
                        }
                        return result;
                    }
                });
    }
    @Override
    public java.util.concurrent.Future updateThingShadowAsync(
            UpdateThingShadowRequest request) {
        return updateThingShadowAsync(request, null);
    }
    @Override
    public java.util.concurrent.Future updateThingShadowAsync(
            final UpdateThingShadowRequest request,
            final com.amazonaws.handlers.AsyncHandler asyncHandler) {
        return executorService
                .submit(new java.util.concurrent.Callable() {
                    @Override
                    public UpdateThingShadowResult call() throws Exception {
                        UpdateThingShadowResult result;
                        try {
                            result = updateThingShadow(request);
                        } catch (Exception ex) {
                            if (asyncHandler != null) {
                                asyncHandler.onError(ex);
                            }
                            throw ex;
                        }
                        if (asyncHandler != null) {
                            asyncHandler.onSuccess(request, result);
                        }
                        return result;
                    }
                });
    }
    /**
     * Shuts down the client, releasing all managed resources. This includes
     * forcibly terminating all pending asynchronous service calls. Clients who
     * wish to give pending asynchronous service calls time to complete should
     * call {@code getExecutorService().shutdown()} followed by
     * {@code getExecutorService().awaitTermination()} prior to calling this
     * method.
     */
    @Override
    public void shutdown() {
        super.shutdown();
        executorService.shutdownNow();
    }
}