nacos中ServiceReporter的作用是什么
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ServiceManager.init
nacos-1.1.3/naming/src/main/java/com/alibaba/nacos/naming/core/ServiceManager.java
@Component
@DependsOn("nacosApplicationContext")
public class ServiceManager implements RecordListener {
/**
* Map>
*/
private Map> serviceMap = new ConcurrentHashMap<>();
private LinkedBlockingDeque toBeUpdatedServicesQueue = new LinkedBlockingDeque<>(1024 * 1024);
private Synchronizer synchronizer = new ServiceStatusSynchronizer();
private final Lock lock = new ReentrantLock();
@Resource(name = "consistencyDelegate")
private ConsistencyService consistencyService;
@Autowired
private SwitchDomain switchDomain;
@Autowired
private DistroMapper distroMapper;
@Autowired
private ServerListManager serverListManager;
@Autowired
private PushService pushService;
private final Object putServiceLock = new Object();
@PostConstruct
public void init() {
UtilsAndCommons.SERVICE_SYNCHRONIZATION_EXECUTOR.schedule(new ServiceReporter(), 60000, TimeUnit.MILLISECONDS);
UtilsAndCommons.SERVICE_UPDATE_EXECUTOR.submit(new UpdatedServiceProcessor());
try {
Loggers.SRV_LOG.info("listen for service meta change");
consistencyService.listen(KeyBuilder.SERVICE_META_KEY_PREFIX, this);
} catch (NacosException e) {
Loggers.SRV_LOG.error("listen for service meta change failed!");
}
}
//......
} ServiceManager的init方法往UtilsAndCommons.SERVICE_SYNCHRONIZATION_EXECUTOR注册了ServiceReporter
ServiceReporter
nacos-1.1.3/naming/src/main/java/com/alibaba/nacos/naming/core/ServiceManager.java
private class ServiceReporter implements Runnable {
@Override
public void run() {
try {
Map> allServiceNames = getAllServiceNames();
if (allServiceNames.size() <= 0) {
//ignore
return;
}
for (String namespaceId : allServiceNames.keySet()) {
ServiceChecksum checksum = new ServiceChecksum(namespaceId);
for (String serviceName : allServiceNames.get(namespaceId)) {
if (!distroMapper.responsible(serviceName)) {
continue;
}
Service service = getService(namespaceId, serviceName);
if (service == null) {
continue;
}
service.recalculateChecksum();
checksum.addItem(serviceName, service.getChecksum());
}
Message msg = new Message();
msg.setData(JSON.toJSONString(checksum));
List sameSiteServers = serverListManager.getServers();
if (sameSiteServers == null || sameSiteServers.size() <= 0) {
return;
}
for (Server server : sameSiteServers) {
if (server.getKey().equals(NetUtils.localServer())) {
continue;
}
synchronizer.send(server.getKey(), msg);
}
}
} catch (Exception e) {
Loggers.SRV_LOG.error("[DOMAIN-STATUS] Exception while sending service status", e);
} finally {
UtilsAndCommons.SERVICE_SYNCHRONIZATION_EXECUTOR.schedule(this, switchDomain.getServiceStatusSynchronizationPeriodMillis(), TimeUnit.MILLISECONDS);
}
}
} ServiceReporter实现Runnable接口，其run方法会遍历allServiceNames，取出distroMapper.responsible的serviceName，重新计算recalculateChecksum，然后添加到ServiceChecksum中，构造Message，遍历sameSiteServers使用synchronizer.send发送该消息；最后往UtilsAndCommons.SERVICE_SYNCHRONIZATION_EXECUTOR重新注册ServiceReporter
ServiceStatusSynchronizer
nacos-1.1.3/naming/src/main/java/com/alibaba/nacos/naming/misc/ServiceStatusSynchronizer.java
public class ServiceStatusSynchronizer implements Synchronizer {
@Override
public void send(final String serverIP, Message msg) {
if(serverIP == null) {
return;
}
Map params = new HashMap(10);
params.put("statuses", msg.getData());
params.put("clientIP", NetUtils.localServer());
String url = "http://" + serverIP + ":" + RunningConfig.getServerPort() + RunningConfig.getContextPath() +
UtilsAndCommons.NACOS_NAMING_CONTEXT + "/service/status";
if (serverIP.contains(UtilsAndCommons.IP_PORT_SPLITER)) {
url = "http://" + serverIP + RunningConfig.getContextPath() +
UtilsAndCommons.NACOS_NAMING_CONTEXT + "/service/status";
}
try {
HttpClient.asyncHttpPostLarge(url, null, JSON.toJSONString(params), new AsyncCompletionHandler() {
@Override
public Integer onCompleted(Response response) throws Exception {
if (response.getStatusCode() != HttpURLConnection.HTTP_OK) {
Loggers.SRV_LOG.warn("[STATUS-SYNCHRONIZE] failed to request serviceStatus, remote server: {}", serverIP);
return 1;
}
return 0;
}
});
} catch (Exception e) {
Loggers.SRV_LOG.warn("[STATUS-SYNCHRONIZE] failed to request serviceStatus, remote server: " + serverIP, e);
}
}
@Override
public Message get(String serverIP, String key) {
if(serverIP == null) {
return null;
}
Map params = new HashMap<>(10);
params.put("key", key);
String result;
try {
if (Loggers.SRV_LOG.isDebugEnabled()) {
Loggers.SRV_LOG.debug("[STATUS-SYNCHRONIZE] sync service status from: {}, service: {}", serverIP, key);
}
result = NamingProxy.reqAPI(RunningConfig.getContextPath()
+ UtilsAndCommons.NACOS_NAMING_CONTEXT + "/instance/" + "statuses", params, serverIP);
} catch (Exception e) {
Loggers.SRV_LOG.warn("[STATUS-SYNCHRONIZE] Failed to get service status from " + serverIP, e);
return null;
}
if(result == null || result.equals(StringUtils.EMPTY)) {
return null;
}
Message msg = new Message();
msg.setData(result);
return msg;
}
} ServiceStatusSynchronizer实现了Synchronizer接口，其send方法会异步执行post请求，将statuses通知到目标server
小结
ServiceReporter实现Runnable接口，其run方法会遍历allServiceNames，取出distroMapper.responsible的serviceName，重新计算recalculateChecksum，然后添加到ServiceChecksum中，构造Message，遍历sameSiteServers使用synchronizer.send发送该消息；最后往UtilsAndCommons.SERVICE_SYNCHRONIZATION_EXECUTOR重新注册ServiceReporter
上述就是小编为大家分享的nacos中ServiceReporter的作用是什么了，如果刚好有类似的疑惑，不妨参照上述分析进行理解。如果想知道更多相关知识，欢迎关注创新互联行业资讯频道。
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