package com.genersoft.iot.vmp.gb28181.event.alarm;
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import org.springframework.context.ApplicationListener;
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import org.springframework.stereotype.Component;
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import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
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import java.io.IOException;
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import java.util.Hashtable;
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import java.util.Iterator;
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import java.util.Map;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* @description: 报警事件监听
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* @author: lawrencehj
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* @data: 2021-01-20
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*/
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@Component
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public class AlarmEventListener implements ApplicationListener<AlarmEvent> {
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private final static Logger logger = LoggerFactory.getLogger(AlarmEventListener.class);
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private static Map<String, SseEmitter> sseEmitters = new Hashtable<>();
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public void addSseEmitters(String browserId, SseEmitter sseEmitter) {
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sseEmitters.put(browserId, sseEmitter);
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}
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@Override
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public void onApplicationEvent(AlarmEvent event) {
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if (logger.isDebugEnabled()) {
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logger.debug("设备报警事件触发，deviceId：" + event.getAlarmInfo().getDeviceId() + ", "
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+ event.getAlarmInfo().getAlarmDescription());
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}
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String msg = "<strong>设备编码：</strong> <i>" + event.getAlarmInfo().getDeviceId() + "</i>"
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+ "<br><strong>报警描述：</strong> <i>" + event.getAlarmInfo().getAlarmDescription() + "</i>"
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+ "<br><strong>报警时间：</strong> <i>" + event.getAlarmInfo().getAlarmTime() + "</i>"
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+ "<br><strong>报警位置：</strong> <i>" + event.getAlarmInfo().getLongitude() + "</i>"
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+ ", <i>" + event.getAlarmInfo().getLatitude() + "</i>";
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for (Iterator<Map.Entry<String, SseEmitter>> it = sseEmitters.entrySet().iterator(); it.hasNext();) {
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Map.Entry<String, SseEmitter> emitter = it.next();
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logger.info("推送到SSE连接，浏览器ID: " + emitter.getKey());
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try {
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emitter.getValue().send(msg);
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} catch (IOException | IllegalStateException e) {
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if (logger.isDebugEnabled()) {
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logger.debug("SSE连接已关闭");
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}
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// 移除已关闭的连接
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it.remove();
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// e.printStackTrace();
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}
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}
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}
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}
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