com.atomikos.persistence.imp.StateRecoveryManagerImp Maven / Gradle / Ivy
/**
* Copyright (C) 2000-2016 Atomikos
*
* This code ("Atomikos TransactionsEssentials"), by itself,
* is being distributed under the
* Apache License, Version 2.0 ("License"), a copy of which may be found at
* http://www.atomikos.com/licenses/apache-license-2.0.txt .
* You may not use this file except in compliance with the License.
*
* While the License grants certain patent license rights,
* those patent license rights only extend to the use of
* Atomikos TransactionsEssentials by itself.
*
* This code (Atomikos TransactionsEssentials) contains certain interfaces
* in package (namespace) com.atomikos.icatch
* (including com.atomikos.icatch.Participant) which, if implemented, may
* infringe one or more patents held by Atomikos.
* It should be appreciated that you may NOT implement such interfaces;
* licensing to implement these interfaces must be obtained separately from Atomikos.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*/
package com.atomikos.persistence.imp;
import com.atomikos.finitestates.FSMEnterEvent;
import com.atomikos.finitestates.FSMPreEnterListener;
import com.atomikos.icatch.CoordinatorLogEntry;
import com.atomikos.icatch.TxState;
import com.atomikos.persistence.RecoverableCoordinator;
import com.atomikos.persistence.StateRecoveryManager;
import com.atomikos.recovery.LogException;
import com.atomikos.recovery.OltpLog;
import com.atomikos.util.Assert;
/**
* Default implementation of a state recovery manager.
*/
public class StateRecoveryManagerImp implements StateRecoveryManager, FSMPreEnterListener
{
/**
* @see StateRecoveryManager
*/
public void register(RecoverableCoordinator staterecoverable) {
Assert.notNull("illegal attempt to register null staterecoverable", staterecoverable);
TxState[] states = TxState.values();
for (TxState txState : states) {
if (txState.isRecoverableState() || txState.isFinalState()) {
staterecoverable.addFSMPreEnterListener(this, txState);
}
}
}
/**
* @see FSMPreEnterListener
*/
public void preEnter(FSMEnterEvent event) throws IllegalStateException {
TxState state = event.getState();
RecoverableCoordinator source = (RecoverableCoordinator) event.getSource();
CoordinatorLogEntry coordinatorLogEntry=source.getCoordinatorLogEntry(state);
if (coordinatorLogEntry != null) {
// null images are not logged as per the Recoverable contract
try {
oltpLog.write(coordinatorLogEntry);
} catch (LogException le) {
throw new IllegalStateException("could not flush state image " + le.getMessage() + " " + le.getClass().getName(), le);
}
}
}
/**
* @see StateRecoveryManager
*/
public void close() throws LogException {
oltpLog.close();
}
private OltpLog oltpLog;
public void setOltpLog(OltpLog oltpLog) {
this.oltpLog = oltpLog;
}
}