package com.genersoft.iot.vmp.gb28181.transmit;
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import com.genersoft.iot.vmp.gb28181.event.EventPublisher;
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import com.genersoft.iot.vmp.gb28181.event.SipSubscribe;
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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.response.ISIPResponseProcessor;
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import com.genersoft.iot.vmp.gb28181.transmit.event.timeout.ITimeoutProcessor;
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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.annotation.Autowired;
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import org.springframework.scheduling.annotation.Async;
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import org.springframework.stereotype.Component;
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import javax.sip.*;
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import javax.sip.header.*;
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import javax.sip.message.Request;
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import javax.sip.message.Response;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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/**
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* @description: SIP信令处理类观察者
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* @author: panlinlin
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* @date: 2021年11月5日 下午15：32
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*/
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@Component
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public class SIPProcessorObserver implements ISIPProcessorObserver {
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private final static Logger logger = LoggerFactory.getLogger(SIPProcessorObserver.class);
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private static Map<String, ISIPRequestProcessor> requestProcessorMap = new ConcurrentHashMap<>();
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private static Map<String, ISIPResponseProcessor> responseProcessorMap = new ConcurrentHashMap<>();
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private static ITimeoutProcessor timeoutProcessor;
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@Autowired
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private SipSubscribe sipSubscribe;
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@Autowired
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private EventPublisher eventPublisher;
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/**
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* 添加 request订阅
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* @param method 方法名
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* @param processor 处理程序
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*/
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public void addRequestProcessor(String method, ISIPRequestProcessor processor) {
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requestProcessorMap.put(method, processor);
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}
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/**
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* 添加 response订阅
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* @param method 方法名
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* @param processor 处理程序
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*/
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public void addResponseProcessor(String method, ISIPResponseProcessor processor) {
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responseProcessorMap.put(method, processor);
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}
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/**
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* 添加 超时事件订阅
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* @param processor 处理程序
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*/
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public void addTimeoutProcessor(ITimeoutProcessor processor) {
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timeoutProcessor = processor;
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}
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/**
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* 分发RequestEvent事件
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* @param requestEvent RequestEvent事件
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*/
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@Override
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@Async
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public void processRequest(RequestEvent requestEvent) {
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String method = requestEvent.getRequest().getMethod();
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ISIPRequestProcessor sipRequestProcessor = requestProcessorMap.get(method);
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if (sipRequestProcessor == null) {
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logger.warn("不支持方法{}的request", method);
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return;
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}
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requestProcessorMap.get(method).process(requestEvent);
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}
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/**
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* 分发ResponseEvent事件
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* @param responseEvent responseEvent事件
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*/
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@Override
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@Async
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public void processResponse(ResponseEvent responseEvent) {
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Response response = responseEvent.getResponse();
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int status = response.getStatusCode();
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if (((status >= 200) && (status < 300)) || status == Response.UNAUTHORIZED) { // Success!
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CSeqHeader cseqHeader = (CSeqHeader) responseEvent.getResponse().getHeader(CSeqHeader.NAME);
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String method = cseqHeader.getMethod();
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ISIPResponseProcessor sipRequestProcessor = responseProcessorMap.get(method);
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if (sipRequestProcessor != null) {
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sipRequestProcessor.process(responseEvent);
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}
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if (status != Response.UNAUTHORIZED && responseEvent.getResponse() != null && sipSubscribe.getOkSubscribesSize() > 0 ) {
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CallIdHeader callIdHeader = (CallIdHeader)responseEvent.getResponse().getHeader(CallIdHeader.NAME);
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if (callIdHeader != null) {
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SipSubscribe.Event subscribe = sipSubscribe.getOkSubscribe(callIdHeader.getCallId());
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if (subscribe != null) {
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SipSubscribe.EventResult eventResult = new SipSubscribe.EventResult(responseEvent);
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sipSubscribe.removeOkSubscribe(callIdHeader.getCallId());
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subscribe.response(eventResult);
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}
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}
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}
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} else if ((status >= 100) && (status < 200)) {
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// 增加其它无需回复的响应，如101、180等
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} else {
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logger.warn("接收到失败的response响应！status：" + status + ",message:" + response.getReasonPhrase());
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if (responseEvent.getResponse() != null && sipSubscribe.getErrorSubscribesSize() > 0 ) {
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CallIdHeader callIdHeader = (CallIdHeader)responseEvent.getResponse().getHeader(CallIdHeader.NAME);
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if (callIdHeader != null) {
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SipSubscribe.Event subscribe = sipSubscribe.getErrorSubscribe(callIdHeader.getCallId());
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if (subscribe != null) {
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SipSubscribe.EventResult eventResult = new SipSubscribe.EventResult(responseEvent);
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subscribe.response(eventResult);
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sipSubscribe.removeErrorSubscribe(callIdHeader.getCallId());
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}
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}
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}
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if (responseEvent.getDialog() != null) {
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responseEvent.getDialog().delete();
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}
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}
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}
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/**
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* 向超时订阅发送消息
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* @param timeoutEvent timeoutEvent事件
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*/
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@Override
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public void processTimeout(TimeoutEvent timeoutEvent) {
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logger.info("[消息发送超时]");
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ClientTransaction clientTransaction = timeoutEvent.getClientTransaction();
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if (clientTransaction != null) {
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logger.info("[发送错误订阅] clientTransaction != null");
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Request request = clientTransaction.getRequest();
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if (request != null) {
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logger.info("[发送错误订阅] request != null");
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CallIdHeader callIdHeader = (CallIdHeader) request.getHeader(CallIdHeader.NAME);
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if (callIdHeader != null) {
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logger.info("[发送错误订阅]");
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SipSubscribe.Event subscribe = sipSubscribe.getErrorSubscribe(callIdHeader.getCallId());
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SipSubscribe.EventResult eventResult = new SipSubscribe.EventResult(timeoutEvent);
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subscribe.response(eventResult);
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sipSubscribe.removeOkSubscribe(callIdHeader.getCallId());
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sipSubscribe.removeErrorSubscribe(callIdHeader.getCallId());
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}
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}
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}
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eventPublisher.requestTimeOut(timeoutEvent);
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}
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@Override
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public void processIOException(IOExceptionEvent exceptionEvent) {
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System.out.println("processIOException");
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}
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@Override
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public void processTransactionTerminated(TransactionTerminatedEvent transactionTerminatedEvent) {
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// Transaction transaction = null;
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// System.out.println("processTransactionTerminated");
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// if (transactionTerminatedEvent.isServerTransaction()) {
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// transaction = transactionTerminatedEvent.getServerTransaction();
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// }else {
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// transaction = transactionTerminatedEvent.getClientTransaction();
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// }
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//
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// System.out.println(transaction.getBranchId());
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// System.out.println(transaction.getState());
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// System.out.println(transaction.getRequest().getMethod());
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// CallIdHeader header = (CallIdHeader)transaction.getRequest().getHeader(CallIdHeader.NAME);
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// SipSubscribe.EventResult<TransactionTerminatedEvent> terminatedEventEventResult = new SipSubscribe.EventResult<>(transactionTerminatedEvent);
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// sipSubscribe.getErrorSubscribe(header.getCallId()).response(terminatedEventEventResult);
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}
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@Override
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public void processDialogTerminated(DialogTerminatedEvent dialogTerminatedEvent) {
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CallIdHeader callId = dialogTerminatedEvent.getDialog().getCallId();
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}
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}
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