package com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message;
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import com.genersoft.iot.vmp.gb28181.bean.Device;
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import com.genersoft.iot.vmp.gb28181.bean.DeviceNotFoundEvent;
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import com.genersoft.iot.vmp.gb28181.bean.ParentPlatform;
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import com.genersoft.iot.vmp.gb28181.bean.SsrcTransaction;
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import com.genersoft.iot.vmp.gb28181.event.SipSubscribe;
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import com.genersoft.iot.vmp.gb28181.session.VideoStreamSessionManager;
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import com.genersoft.iot.vmp.gb28181.transmit.SIPProcessorObserver;
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import com.genersoft.iot.vmp.gb28181.transmit.event.request.ISIPRequestProcessor;
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import com.genersoft.iot.vmp.gb28181.transmit.event.request.SIPRequestProcessorParent;
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import com.genersoft.iot.vmp.gb28181.utils.SipUtils;
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import com.genersoft.iot.vmp.storager.IRedisCatchStorage;
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import com.genersoft.iot.vmp.storager.IVideoManagerStorager;
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import org.dom4j.DocumentException;
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import org.dom4j.Element;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.InitializingBean;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Component;
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import javax.sip.InvalidArgumentException;
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import javax.sip.RequestEvent;
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import javax.sip.SipException;
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import javax.sip.header.CSeqHeader;
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import javax.sip.header.CallIdHeader;
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import javax.sip.message.Response;
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import java.text.ParseException;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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@Component
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public class MessageRequestProcessor extends SIPRequestProcessorParent implements InitializingBean, ISIPRequestProcessor {
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private final static Logger logger = LoggerFactory.getLogger(MessageRequestProcessor.class);
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private final String method = "MESSAGE";
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private static Map<String, IMessageHandler> messageHandlerMap = new ConcurrentHashMap<>();
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@Autowired
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private SIPProcessorObserver sipProcessorObserver;
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@Autowired
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private IVideoManagerStorager storage;
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@Autowired
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private SipSubscribe sipSubscribe;
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@Autowired
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private IRedisCatchStorage redisCatchStorage;
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@Autowired
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private VideoStreamSessionManager sessionManager;
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@Override
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public void afterPropertiesSet() throws Exception {
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// 添加消息处理的订阅
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sipProcessorObserver.addRequestProcessor(method, this);
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}
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public void addHandler(String name, IMessageHandler handler) {
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messageHandlerMap.put(name, handler);
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}
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@Override
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public void process(RequestEvent evt) {
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logger.debug("接收到消息：" + evt.getRequest());
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String deviceId = SipUtils.getUserIdFromFromHeader(evt.getRequest());
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CallIdHeader callIdHeader = (CallIdHeader)evt.getRequest().getHeader(CallIdHeader.NAME);
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// 先从会话内查找
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SsrcTransaction ssrcTransaction = sessionManager.getSsrcTransaction(null, null, null, callIdHeader.getCallId());
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if (ssrcTransaction != null) { // 兼容海康 媒体通知 消息from字段不是设备ID的问题
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deviceId = ssrcTransaction.getDeviceId();
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}
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// 查询设备是否存在
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CSeqHeader cseqHeader = (CSeqHeader) evt.getRequest().getHeader(CSeqHeader.NAME);
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String method = cseqHeader.getMethod();
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Device device = redisCatchStorage.getDevice(deviceId);
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// 查询上级平台是否存在
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ParentPlatform parentPlatform = storage.queryParentPlatByServerGBId(deviceId);
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try {
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if (device == null && parentPlatform == null) {
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// 不存在则回复404
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responseAck(evt, Response.NOT_FOUND, "device "+ deviceId +" not found");
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logger.warn("[设备未找到 ]： {}", deviceId);
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if (sipSubscribe.getErrorSubscribe(callIdHeader.getCallId()) != null){
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SipSubscribe.EventResult eventResult = new SipSubscribe.EventResult(new DeviceNotFoundEvent(evt.getDialog()));
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sipSubscribe.getErrorSubscribe(callIdHeader.getCallId()).response(eventResult);
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};
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}else {
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Element rootElement = null;
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try {
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rootElement = getRootElement(evt);
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} catch (DocumentException e) {
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logger.warn("解析XML消息内容异常", e);
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// 不存在则回复404
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responseAck(evt, Response.BAD_REQUEST, e.getMessage());
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}
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String name = rootElement.getName();
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IMessageHandler messageHandler = messageHandlerMap.get(name);
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if (messageHandler != null) {
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if (device != null) {
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messageHandler.handForDevice(evt, device, rootElement);
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}else { // 由于上面已经判断都为null则直接返回，所以这里device和parentPlatform必有一个不为null
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messageHandler.handForPlatform(evt, parentPlatform, rootElement);
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}
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}else {
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// 不支持的message
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// 不存在则回复415
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responseAck(evt, Response.UNSUPPORTED_MEDIA_TYPE, "Unsupported message type, must Control/Notify/Query/Response");
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}
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}
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} catch (SipException e) {
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logger.warn("SIP 回复错误", e);
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} catch (InvalidArgumentException e) {
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logger.warn("参数无效", e);
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} catch (ParseException e) {
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logger.warn("SIP回复时解析异常", e);
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}
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}
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}
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