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package com.sun.enterprise.ee.selfmanagement.actions;
import com.sun.enterprise.config.serverbeans.Config;
import com.sun.enterprise.server.ApplicationServer;
import com.sun.enterprise.server.ServerContext;
import com.sun.enterprise.config.ConfigContext;
import com.sun.enterprise.config.ConfigException;
import com.sun.enterprise.config.serverbeans.Server;
import com.sun.enterprise.config.serverbeans.HttpService;
import com.sun.enterprise.config.serverbeans.HttpListener;
import com.sun.enterprise.config.serverbeans.ServerHelper;
import com.sun.logging.LogDomains;
import java.util.ArrayList;
import java.util.concurrent.Executors;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;
import java.util.concurrent.Callable;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.ExecutionException;
import java.util.logging.Logger;
import java.util.logging.Level;
public class CheckServerHealth implements Runnable {
/** Logger for self management service */
private static Logger _logger = LogDomains.getLogger(LogDomains.SELF_MANAGEMENT_LOGGER);
/** Server instance to check */
private Instance instance = null;
public CheckServerHealth(Instance value) {
instance = value;
}
public void run() {
Boolean isHealthy = false;
try {
ArrayList<HttpListener> enabledListeners = new ArrayList<HttpListener>();
Server serv = instance.getServer();
ConfigContext cfgCtx = InstanceHangAction.configCtx;
Config cfg = ServerHelper.getConfigForServer(cfgCtx, serv.getName());
// get http-listeners on this server
HttpService httpSrv = cfg.getHttpService();
HttpListener[] listeners = httpSrv.getHttpListener();
for (HttpListener listener : listeners) {
if (listener.isEnabled()) {
enabledListeners.add(listener);
//count++;
}
}
int size = enabledListeners.size();
ExecutorService exSrv = Executors.newFixedThreadPool(size);
ArrayList<Future<Boolean>> checkTasks = new ArrayList<Future<Boolean>>(size);
int timeout = instance.getTimeout();
int i = 0;
for (HttpListener listener : enabledListeners) {
Callable<Boolean> checkListener = new CheckListenerHealth(serv,
listener,
timeout);
Future<Boolean> task = exSrv.submit(checkListener);
checkTasks.add(task);
}
// wait for status from the checks
for (Future<Boolean> task : checkTasks) {
isHealthy = task.get();
if (isHealthy) {
//found atleast one healthy listener on the instance
if (instance.getClusterName()!=null) {
_logger.log(Level.INFO,"sgmt.instancehang_clserverhealthy",
new Object[]{serv.getName(),instance.getClusterName()});
} else {
_logger.log(Level.INFO,"sgmt.instancehang_serverhealthy",
serv.getName());
}
break;
}
}
if(!isHealthy) {
String cName = instance.getClusterName();
if (cName!=null) {
//clustered server
_logger.log(Level.WARNING,"sgmt.instancehang_clserverunhealthy",
new Object[]{cName,serv.getName()});
} else {
//standalone server
_logger.log(Level.WARNING,"sgmt.instancehang_serverunhealthy",
serv.getName());
}
}
} catch (InterruptedException ex) {
throw new RuntimeException(ex);
} catch (ExecutionException ex) {
//being optimistic, as check could not be done?
isHealthy=true;
} catch (RejectedExecutionException ex) {
//being optimistic, as check could not be done
isHealthy=true;
} catch (ConfigException ex) {
//nop
}
// the state is accordingly
instance.setHealthy(isHealthy);
}
}