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package com.sun.enterprise.ee.server.autotxrecovery.core;
import com.sun.enterprise.ee.cms.core.*;
import com.sun.enterprise.config.serverbeans.ServerHelper;
import com.sun.enterprise.config.serverbeans.Server;
import com.sun.enterprise.config.ConfigException;
import com.sun.enterprise.resource.ResourceInstaller;
import com.sun.enterprise.Switch;
import com.sun.enterprise.util.i18n.StringManager;
import com.sun.logging.LogDomains;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.sun.ejb.spi.distributed.DistributedEJBServiceFactory;
import com.sun.ejb.spi.distributed.DistributedEJBService;
/**
* This recoveryAction class does the recovery of transactions
* after a particular instance has been chosen for recovery.
* @author <a href=mailto:servesh.singh@sun.com>Servesh Singh</a>
* Date: June 1, 2005
* @version $Revision: 1.3.6.1 $
*/
public class TxnFailureRecoveryActionImpl implements FailureRecoveryAction {
private Logger logger = LogDomains.getLogger(LogDomains.TRANSACTION_LOGGER);
private static StringManager sm =
StringManager.getManager(TxnFailureRecoveryActionImpl.class);
private static final String TXLOGDIR="TX_LOG_DIR";
private static final String ISRECOVERABLE = "IS_RECOVERABLE";
private static final String WAITTIMEBEFORESTARTINGRECOVERY="WAIT_TIME";
private static final String serviceName="TRANSACTION-RECOVERY-SERVICE";
public TxnFailureRecoveryActionImpl () {
}
/**
* processes the recovery signal. typically involves getting information
* from the signal, acquiring the signal and after processing, releasing
* the signal
* @param signal
*/
public void consumeSignal(final Signal signal) {
String failedInstance ="";
String component = "";
GroupHandle gh =null;
try {
GroupManagementService gms = GMSFactory.getGMSModule();
gh = gms.getGroupHandle();
component =
((FailureRecoverySignal)signal).getComponentName();
failedInstance = ((FailureRecoverySignal)signal).getFailedMemberToken();
//Raising the fence to prevent other to come and do the recovery
//of the same instance
//gh.raiseFence(component,failedInstance);
//Waiting for 1 minute to ensure that indoubt xids are updated into
//the database, otherwise while doing the recovery an instance may not
//get all the correct indoubt xids.
int waitTime = 60; // initialize with default value just in case DSC does not have value yet.
//if(signal.getMemberDetails() != null)
String waitTimeString = (String)signal.getMemberDetails().get(WAITTIMEBEFORESTARTINGRECOVERY);
if (waitTimeString != null) {
try {
waitTime = Integer.parseInt(waitTimeString);
} catch (Throwable t) {}
}
if (logger.isLoggable(Level.FINE))
logger.log(Level.FINE,sm.getString("enterprise_autotxrecovery.wait_before_recovery",waitTime));
try {
Thread.sleep(waitTime*1000);
}catch(InterruptedException ie){
ie.printStackTrace();
}
while(gh.isFenced(serviceName,failedInstance)) {
if (logger.isLoggable(Level.FINE))
logger.log(Level.FINE,sm.getString("enterprise_autotxrecovery.waiting_till_fence_lowered"));
try {
Thread.sleep(2*1000);
}catch(InterruptedException ie){
ie.printStackTrace();
}
}
if(gh.isMemberAlive(failedInstance))// Failed Member is alive, don't do recovery, he must have done self recovery
return;
signal.acquire();
if (logger.isLoggable(Level.INFO))
logger.log(Level.INFO,
sm.getString("enterprise_autotxrecovery.fence_raised",
component,failedInstance));
//boolean flag = ServerHelper.getConfigForServer(txnInfo.getConfigContext(),failedInstance).getTransactionService().isAutomaticRecovery();
boolean result = false;
String isRecoverableString = (String)signal.getMemberDetails().get(ISRECOVERABLE);
boolean flag = false; // set default value.
if (isRecoverableString != null) {
try {
flag = Boolean.parseBoolean(isRecoverableString);
} catch (Throwable t) {}
}
if(flag) {
ResourceInstaller resInstaller = Switch.getSwitch().getResourceInstaller();
//String txLogDir= ServerHelper.getConfigForServer(txnInfo.getConfigContext(),
// failedInstance).getTransactionService().getTxLogDir()+File.separator+"tx";
String txLogDir=(String)(signal.getMemberDetails().get(TXLOGDIR));
if (logger.isLoggable(Level.FINE))
logger.log(Level.FINE,sm.getString("enterprise_autotxrecovery.tx_logdir",txLogDir,failedInstance));
if (logger.isLoggable(Level.FINE))
logger.log(Level.FINE,sm.getString("enterprise_autotxrecovery.starting_recovery",failedInstance));
result = resInstaller.recoverIncompleteTx(true, txLogDir);
if (logger.isLoggable(Level.FINE))
logger.log(Level.FINE,sm.getString("enterprise_autotxrecovery.recovery_completed",failedInstance));
if (result) {
// If we have successfully recovered transactions for
// the failed instance, initiate EJB Timer migration
// within this server instance.
DistributedEJBService distribEjbService =
DistributedEJBServiceFactory.getDistributedEJBService();
distribEjbService.migrateTimers(failedInstance);
} else {
throw new IllegalStateException();
}
}
}catch(ConfigException ce){
if (logger.isLoggable(Level.WARNING))
logger.log(Level.WARNING,sm.getString("enterprise_autotxrecovery.config_error"),ce);
}catch(GMSException e) {
if (logger.isLoggable(Level.WARNING))
logger.log(Level.WARNING,sm.getString("enterprise_autotxrecovery.gms_error"),e);
}catch(Exception e){
if (logger.isLoggable(Level.WARNING))
logger.log(Level.WARNING,sm.getString("enterprise_autotxrecovery.recovery_error"),e);
}finally {
try {
if(!failedInstance.equals("")) {
//gh.lowerFence(component,failedInstance);
signal.release();
if (logger.isLoggable(Level.INFO))
logger.log(Level.INFO,sm.getString("enterprise_autotxrecovery.fence_lowered"));
}
}catch(Exception e){}
}
}
}