package com.genersoft.iot.vmp.media.zlm;
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import com.genersoft.iot.vmp.common.VideoManagerConstants;
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import com.genersoft.iot.vmp.conf.UserSetting;
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import com.genersoft.iot.vmp.gb28181.bean.SendRtpItem;
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import com.genersoft.iot.vmp.media.zlm.dto.MediaSendRtpPortInfo;
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import com.genersoft.iot.vmp.utils.redis.RedisUtil;
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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.data.redis.core.RedisTemplate;
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import org.springframework.stereotype.Component;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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@Component
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public class SendRtpPortManager {
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private final static Logger logger = LoggerFactory.getLogger(SendRtpPortManager.class);
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@Autowired
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private UserSetting userSetting;
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@Autowired
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private RedisTemplate<Object, Object> redisTemplate;
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private final String KEY = "VM_MEDIA_SEND_RTP_PORT_RANGE_";
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public void initServerPort(String mediaServerId, int startPort, int endPort){
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String key = KEY + userSetting.getServerId() + "_" + mediaServerId;
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MediaSendRtpPortInfo mediaSendRtpPortInfo = new MediaSendRtpPortInfo(startPort, endPort, mediaServerId);
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redisTemplate.opsForValue().set(key, mediaSendRtpPortInfo);
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}
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public int getNextPort(String mediaServerId) {
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String sendIndexKey = KEY + userSetting.getServerId() + "_" + mediaServerId;
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MediaSendRtpPortInfo mediaSendRtpPortInfo = (MediaSendRtpPortInfo)redisTemplate.opsForValue().get(sendIndexKey);
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if (mediaSendRtpPortInfo == null) {
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logger.warn("[发送端口管理] 获取{}的发送端口时未找到端口信息", mediaSendRtpPortInfo);
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return 0;
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}
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String key = VideoManagerConstants.PLATFORM_SEND_RTP_INFO_PREFIX
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+ userSetting.getServerId() + "_*";
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List<Object> queryResult = RedisUtil.scan(redisTemplate, key);
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Map<Integer, SendRtpItem> sendRtpItemMap = new HashMap<>();
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for (Object o : queryResult) {
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SendRtpItem sendRtpItem = (SendRtpItem) redisTemplate.opsForValue().get(o);
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if (sendRtpItem != null) {
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sendRtpItemMap.put(sendRtpItem.getLocalPort(), sendRtpItem);
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}
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}
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int port = getPort(mediaSendRtpPortInfo.getCurrent(),
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mediaSendRtpPortInfo.getStart(),
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mediaSendRtpPortInfo.getEnd(), checkPort -> sendRtpItemMap.get(checkPort) == null);
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mediaSendRtpPortInfo.setCurrent(port);
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redisTemplate.opsForValue().set(sendIndexKey, mediaSendRtpPortInfo);
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return port;
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}
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interface CheckPortCallback{
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boolean check(int port);
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}
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private int getPort(int current, int start, int end, CheckPortCallback checkPortCallback) {
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int port;
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if (current %2 != 0) {
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port = current + 1;
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}else {
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port = current + 2;
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}
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if (port > end) {
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if (start %2 != 0) {
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port = start + 1;
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}else {
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port = start;
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}
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}
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if (!checkPortCallback.check(port)) {
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return getPort(port, start, end, checkPortCallback);
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}
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return port;
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}
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}
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