Examples of bitronix.tm.recovery.Recoverer

bitronix.tm.recovery.Recoverer
Recovery process implementation. Here is Mike Spille's description of XA recovery:
Straight Line Recovery:
- 1. Find transactions that the TM considers dangling and unresolved
- 2. Find and reconstitute any {@link XAResource}s which were being used when chunk blowing occured.
- 3. Call the recover() method on each of these {@link XAResource}s.
- 4. Throw out any {@link Xid}'s in the {@link XAResource}' recover lists which are not owned by this TM.
- 5. Correlate {@link Xid}'s that the TM knows about with remaining {@link Xid}'s that the {@link XAResource}s reported.
- 6. For {@link XAResource} {@link Xid}'s that match the global transaction ID which the TM found dangling with a "Committing..." record, call commit() on those {@link XAResource}s for those {@link Xid}s.
- 7. For {@link XAResource} {@link Xid}'s that do not match any dangling "Committing..." records, call rollback() on those {@link XAResource}s for those {@link Xid}s.
Exceptional conditions:
- 1. For any rollback() calls from step 6 which reported a Heuristic Commit, you are in danger or doubt, so run in circles, scream and shout.
- 2. For any commit() calls from step 7 which reported a Heuristic Rollback, you are in danger or doubt, so run in circles, scream and shout.
- 3. For any resource you can't reconstitute in in step #2, or who fails on recover in step #3, or who reports anything like an XAER_RMFAILURE in step 6 or step 7, keep trying to contact them in some implementation defined manner.
- 4. For any heuristic outcome you see reported from an XAResource, call forget() for that {@link XAResource}/ {@link Xid} pair so that the resource can stop holding onto a reference to that transaction
To achieve this, {@link Recoverer} must have access to all previously used resources, even if the journal containsno trace of some of them. There are two ways of achieving this: either you use the {@link ResourceLoader} to configureall your resources and everything will be working automatically or by making sure resources are re-created and re-registered.

Those are the three steps of the Bitronix implementation:
- call recover() on all known resources (Mike's steps 1 to 5)
- commit dangling COMMITTING transactions (Mike's step 6)
- rollback any remaining recovered transaction (Mike's step 7)
@author lorban

     * Create the transaction recoverer.
     * @return the transaction recoverer.
     */
    public synchronized static Recoverer getRecoverer() {
        if (recoverer == null) {
            recoverer = new Recoverer();
        }
        return recoverer;
    }

View Full Code Here

    
    public void testRecoveryTask() throws Exception {
        TaskScheduler ts = new TaskScheduler();
        ts.start();


        Recoverer recoverer = new Recoverer();
        ts.scheduleRecovery(recoverer, new Date());
        assertEquals(1, ts.countTasksQueued());
        Thread.sleep(1100);
        assertEquals(1, ts.countTasksQueued());

View Full Code Here

    /**
     * Create the transaction recoverer.
     * @return the transaction recoverer.
     */
    public static Recoverer getRecoverer() {
        Recoverer recoverer = recovererRef.get();
        if (recoverer == null) {
            recoverer = new Recoverer();
            if (!recovererRef.compareAndSet(null, recoverer)) {
                recoverer = recovererRef.get();
            }
        }
        return recoverer;

View Full Code Here

        ts.shutdown();
    }




    public void testRecoveryTask() throws Exception {
        Recoverer recoverer = new Recoverer();
        ts.scheduleRecovery(recoverer, new Date());
        assertEquals(1, ts.countTasksQueued());
        Thread.sleep(1100);
        assertEquals(1, ts.countTasksQueued());

View Full Code Here

        poolingDataSource.setClassName(MockitoXADataSource.class.getName());
        poolingDataSource.setUniqueName("ds1");
        poolingDataSource.setMaxPoolSize(1);
        poolingDataSource.init();


        Recoverer recoverer = new Recoverer();
        recoverer.run();
        assertEquals("a PoolingDataSource containing an XAPool of resource ds1 with 0 connection(s) (0 still available) -failed-", poolingDataSource.toString());
        // recoverer must not unregister the resource
        assertSame(poolingDataSource, ResourceRegistrar.get("ds1"));


        MockitoXADataSource.setStaticGetXAConnectionException(null);


        recoverer.run();
        assertEquals("a PoolingDataSource containing an XAPool of resource ds1 with 1 connection(s) (1 still available)", poolingDataSource.toString());
        // recoverer must not unregister the resource
        assertSame(poolingDataSource, ResourceRegistrar.get("ds1"));


        poolingDataSource.close();

View Full Code Here


        assertEquals("a PoolingDataSource containing an XAPool of resource ds1 with 0 connection(s) (0 still available) -failed-", poolingDataSource.toString());


        MockitoXADataSource.setStaticGetXAConnectionException(null);


        Recoverer recoverer = new Recoverer();
        recoverer.run();
        assertEquals("a PoolingDataSource containing an XAPool of resource ds1 with 1 connection(s) (1 still available)", poolingDataSource.toString());
        // recoverer must not unregister the resource
        assertSame(poolingDataSource, ResourceRegistrar.get("ds1"));


        poolingDataSource.close();

View Full Code Here

TOP

Related Classes of bitronix.tm.recovery.Recoverer

bitronix.tm.BitronixXid

bitronix.tm.internal.XAResourceHolderState

bitronix.tm.JdbcFailedPoolTest

bitronix.tm.journal.JournalRecord

bitronix.tm.journal.TransactionLogRecord

bitronix.tm.resource.common.XAResourceProducer

bitronix.tm.timer.TaskSchedulerTest

bitronix.tm.TransactionManagerServices

bitronix.tm.utils.Uid

javax.transaction.xa.Xid

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.