com.huaweicloud.sdk.iot.device.client.RequestManager Maven / Gradle / Ivy

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/*
 * Copyright (c) 2020-2023 Huawei Cloud Computing Technology Co., Ltd. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 *    conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
 *    of conditions and the following disclaimer in the documentation and/or other materials
 *    provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
 *    to endorse or promote products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.huaweicloud.sdk.iot.device.client;

import com.huaweicloud.sdk.iot.device.transport.RawMessage;
import com.huaweicloud.sdk.iot.device.utils.IotUtil;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

/**
 * 请求管理器
 */
public class RequestManager {
    private static final Logger log = LogManager.getLogger(RequestManager.class);

    private final ConcurrentMap pendingRequests = new ConcurrentHashMap<>();

    private final DeviceClient iotClient;

    /**
     * 构造函数
     *
     * @param client 客户端
     */
    RequestManager(DeviceClient client) {
        this.iotClient = client;
    }

    /**
     * 执行同步请求
     *
     * @param iotRequest 请求参数
     * @return 请求执行结果
     */
    public Object executeSyncRequest(IotRequest iotRequest) {

        RawMessage rawMessage = iotRequest.getRawMessage();
        iotClient.publishRawMessage(rawMessage, null);
        pendingRequests.put(iotRequest.getRequestId(), iotRequest);
        iotRequest.runSync();
        return iotRequest.getResult();
    }

    /**
     * 执行异步请求
     *
     * @param iotRequest 请求参数
     * @param listener   请求监听器，用于接收请求完成通知
     */
    public void executeAsyncRequest(IotRequest iotRequest, RequestListener listener) {

        RawMessage rawMessage = iotRequest.getRawMessage();
        iotClient.publishRawMessage(rawMessage, null);
        pendingRequests.put(iotRequest.getRequestId(), iotRequest);
        iotRequest.runAsync(listener);
    }

    /**
     * 请求响应回调，由sdk自动调用
     *
     * @param message 响应消息
     */
    public void onRequestResponse(RawMessage message) {
        String requestId = IotUtil.getRequestId(message.getTopic());
        IotRequest request = pendingRequests.remove(requestId);
        if (request == null) {
            log.error("request is null, requestId: " + requestId);
            return;
        }

        request.onFinish(message.toString());
    }
}