com.atomikos.icatch.imp.HeurMixedStateHandler Maven / Gradle / Ivy
/**
* Copyright (C) 2000-2019 Atomikos
*
* LICENSE CONDITIONS
*
* See http://www.atomikos.com/Main/WhichLicenseApplies for details.
*/
package com.atomikos.icatch.imp;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Set;
import java.util.Stack;
import com.atomikos.icatch.HeurCommitException;
import com.atomikos.icatch.HeurHazardException;
import com.atomikos.icatch.HeurMixedException;
import com.atomikos.icatch.HeurRollbackException;
import com.atomikos.icatch.Participant;
import com.atomikos.icatch.RollbackException;
import com.atomikos.icatch.SysException;
import com.atomikos.recovery.TxState;
import com.atomikos.thread.InterruptedExceptionHelper;
/**
* A state handler for the heuristic mixed coordinator state.
*/
class HeurMixedStateHandler extends CoordinatorStateHandler
{
private Set hazards_;
private long timeoutTicks = 0;
HeurMixedStateHandler ( CoordinatorStateHandler previous , Set hazards )
{
super ( previous );
hazards_ = new HashSet(hazards);
}
protected TxState getState ()
{
return TxState.HEUR_MIXED;
}
protected void onTimeout ()
{
timeoutTicks++;
// this state can only be reached through COMMITTING or ABORTING
// so getCommitted can not be null
Boolean commitDecided = getCommitted();
//replay does remove -> re-add hazards each time
addAllForReplay ( hazards_ );
Stack replayStack = getReplayStack ();
if ( !replayStack.empty () && commitDecided != null ) {
boolean committed = commitDecided.booleanValue ();
int count = replayStack.size ();
TerminationResult result = new TerminationResult ( count );
while ( !replayStack.empty () ) {
Participant part = replayStack.pop ();
if ( committed ) {
CommitMessage cm = new CommitMessage ( part, result, false );
getPropagator ().submitPropagationMessage ( cm );
} else {
RollbackMessage rm = new RollbackMessage ( part, result,
true );
getPropagator ().submitPropagationMessage ( rm );
}
}
try {
result.waitForReplies ();
// remove OK replies from hazards_ list and change state if
// hazard_ is empty.
Stack replies = result.getReplies ();
Enumeration enumm = replies.elements ();
while ( enumm.hasMoreElements () ) {
Reply reply = enumm.nextElement ();
if ( !reply.hasFailed () ) {
hazards_.remove ( reply.getParticipant () );
}
}
if ( hazards_.isEmpty () ) {
TerminatedStateHandler termStateHandler = new TerminatedStateHandler (
this );
getCoordinator().setStateHandler(termStateHandler);
}
} catch ( InterruptedException inter ) {
// cf bug 67457
InterruptedExceptionHelper.handleInterruptedException ( inter );
// return silently;
// worst case is some remaining indoubt participants
}
}
if (timeoutTicks > getCoordinator().getMaxIndoubtTicks()) { //we give up after a while
removePendingOltpCoordinatorFromTransactionService();
}
}
protected void setGlobalSiblingCount ( int count )
{
// nothing to do here
}
protected int prepare () throws RollbackException,
java.lang.IllegalStateException, HeurHazardException,
HeurMixedException, SysException
{
// check heuristic state: during prepare, there can be no global commit
// decision yet.
// therefore, this prepare call is NOT allowed to return anything else
// then a
// heuristic hazard exception.
// thus, no matter what the heuristic really is, report it as hazard.
throw new HeurHazardException();
}
protected void commit ( boolean onePhase )
throws HeurRollbackException, HeurMixedException,
HeurHazardException, java.lang.IllegalStateException,
RollbackException, SysException
{
throw new HeurMixedException();
}
protected void rollback () throws HeurCommitException,
HeurMixedException, SysException, HeurHazardException,
java.lang.IllegalStateException
{
throw new HeurMixedException();
}
}