in ons-core/ons-trace-core/src/main/java/org/apache/rocketmq/ons/open/trace/core/dispatch/impl/TraceProducerFactory.java [64:82]
public static DefaultMQProducer getTraceDispatcherProducer(Properties properties, SessionCredentials sessionCredentials) {
if (traceProducer == null) {
String accessKey = properties.getProperty(OnsTraceConstants.AccessKey);
traceProducer = new DefaultMQProducer(new ClientRPCHook(sessionCredentials));
traceProducer.setProducerGroup(accessKey.replace('.', '-') + OnsTraceConstants.groupName);
traceProducer.setSendMsgTimeout(5000);
traceProducer.setInstanceName(properties.getProperty(OnsTraceConstants.InstanceName, String.valueOf(System.currentTimeMillis())));
String nameSrv = properties.getProperty(OnsTraceConstants.NAMESRV_ADDR);
if (nameSrv == null) {
TopAddressing topAddressing = new TopAddressing(properties.getProperty(OnsTraceConstants.ADDRSRV_URL));
nameSrv = topAddressing.fetchNSAddr();
}
traceProducer.setNamesrvAddr(nameSrv);
traceProducer.setVipChannelEnabled(false);
int maxSize = Integer.parseInt(properties.getProperty(OnsTraceConstants.MaxMsgSize, "128000"));
traceProducer.setMaxMessageSize(maxSize - 10 * 1000);
}
return traceProducer;
}