org.jboss.cache.interceptors
Class ReplicationInterceptor

java.lang.Object
  org.jboss.cache.commands.AbstractVisitor
      org.jboss.cache.interceptors.base.CommandInterceptor
          org.jboss.cache.interceptors.BaseRpcInterceptor
              org.jboss.cache.interceptors.ReplicationInterceptor

All Implemented Interfaces:

Visitor

public class ReplicationInterceptor
extends BaseRpcInterceptor

Takes care of replicating modifications to other nodes in a cluster. Also listens for prepare(), commit() and rollback() messages which are received 'side-ways' (see docs/design/Refactoring.txt).

Version:

$Id: ReplicationInterceptor.java 6776 2008-09-22 17:35:46Z manik.surtani@jboss.com $

Author:

Bela Ban

Field Summary

Fields inherited from class org.jboss.cache.interceptors.BaseRpcInterceptor

defaultSynchronous, rpcManager, txTable

Fields inherited from class org.jboss.cache.interceptors.base.CommandInterceptor

configuration, log, trace

Constructor Summary

ReplicationInterceptor()

Method Summary

protected void	runPreparePhase(PrepareCommand prepareMethod, GlobalTransaction gtx, InvocationContext ctx) Calls prepare(GlobalTransaction,List,org.jgroups.Address,boolean)) in all members except self.
Object	visitClearDataCommand(InvocationContext ctx, ClearDataCommand command) Visits a RemoveDataCommand.
Object	visitCommitCommand(InvocationContext ctx, CommitCommand command) Visits a CommitCommand.
Object	visitMoveCommand(InvocationContext ctx, MoveCommand command) Visits a MoveCommand.
Object	visitPrepareCommand(InvocationContext ctx, PrepareCommand command) Visits a PrepareCommand.
Object	visitPutDataMapCommand(InvocationContext ctx, PutDataMapCommand command) Visits a PutDataMapCommand.
Object	visitPutForExternalReadCommand(InvocationContext ctx, PutForExternalReadCommand command) Visits a PutForExternalReadCommand.
Object	visitPutKeyValueCommand(InvocationContext ctx, PutKeyValueCommand command) Visits a PutKeyValueCommand.
Object	visitRemoveKeyCommand(InvocationContext ctx, RemoveKeyCommand command) Visits a RemoveKeyCommand.
Object	visitRemoveNodeCommand(InvocationContext ctx, RemoveNodeCommand command) Visits a RemoveNodeCommand.
Object	visitRollbackCommand(InvocationContext ctx, RollbackCommand command) Visits a RollbackCommand.

Methods inherited from class org.jboss.cache.interceptors.BaseRpcInterceptor

checkResponses, injectComponents, isLocalModeForced, isSynchronous, isTransactionalAndLocal, replicateCall, replicateCall, replicateCall, replicateCall, skipReplicationOfTransactionMethod

Methods inherited from class org.jboss.cache.interceptors.base.CommandInterceptor

getNext, handleDefault, hasNext, invokeNextInterceptor, setNext

Methods inherited from class org.jboss.cache.commands.AbstractVisitor

visitCollection, visitCreateNodeCommand, visitEvictFqnCommand, visitExistsNodeCommand, visitGetDataMapCommand, visitGetChildrenNamesCommand, visitGetKeysCommand, visitGetKeyValueCommand, visitGetNodeCommand, visitGravitateDataCommand, visitInvalidateCommand, visitOptimisticPrepareCommand

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ReplicationInterceptor

public ReplicationInterceptor()

Method Detail

visitCommitCommand

public Object visitCommitCommand(InvocationContext ctx,
                                 CommitCommand command)
                          throws Throwable

Description copied from interface: Visitor

Visits a CommitCommand.

Specified by:

visitCommitCommand in interface Visitor

Overrides:

visitCommitCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitPrepareCommand

public Object visitPrepareCommand(InvocationContext ctx,
                                  PrepareCommand command)
                           throws Throwable

Description copied from interface: Visitor

Visits a PrepareCommand.

Specified by:

visitPrepareCommand in interface Visitor

Overrides:

visitPrepareCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitRollbackCommand

public Object visitRollbackCommand(InvocationContext ctx,
                                   RollbackCommand command)
                            throws Throwable

Description copied from interface: Visitor

Visits a RollbackCommand.

Specified by:

visitRollbackCommand in interface Visitor

Overrides:

visitRollbackCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitPutForExternalReadCommand

public Object visitPutForExternalReadCommand(InvocationContext ctx,
                                             PutForExternalReadCommand command)
                                      throws Throwable

Description copied from interface: Visitor

Visits a PutForExternalReadCommand.

Specified by:

visitPutForExternalReadCommand in interface Visitor

Overrides:

visitPutForExternalReadCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitPutKeyValueCommand

public Object visitPutKeyValueCommand(InvocationContext ctx,
                                      PutKeyValueCommand command)
                               throws Throwable

Description copied from interface: Visitor

Visits a PutKeyValueCommand.

Specified by:

visitPutKeyValueCommand in interface Visitor

Overrides:

visitPutKeyValueCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitPutDataMapCommand

public Object visitPutDataMapCommand(InvocationContext ctx,
                                     PutDataMapCommand command)
                              throws Throwable

Description copied from interface: Visitor

Visits a PutDataMapCommand.

Specified by:

visitPutDataMapCommand in interface Visitor

Overrides:

visitPutDataMapCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitMoveCommand

public Object visitMoveCommand(InvocationContext ctx,
                               MoveCommand command)
                        throws Throwable

Description copied from interface: Visitor

Visits a MoveCommand.

Specified by:

visitMoveCommand in interface Visitor

Overrides:

visitMoveCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitRemoveNodeCommand

public Object visitRemoveNodeCommand(InvocationContext ctx,
                                     RemoveNodeCommand command)
                              throws Throwable

Description copied from interface: Visitor

Visits a RemoveNodeCommand.

Specified by:

visitRemoveNodeCommand in interface Visitor

Overrides:

visitRemoveNodeCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitRemoveKeyCommand

public Object visitRemoveKeyCommand(InvocationContext ctx,
                                    RemoveKeyCommand command)
                             throws Throwable

Description copied from interface: Visitor

Visits a RemoveKeyCommand.

Specified by:

visitRemoveKeyCommand in interface Visitor

Overrides:

visitRemoveKeyCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

visitClearDataCommand

public Object visitClearDataCommand(InvocationContext ctx,
                                    ClearDataCommand command)
                             throws Throwable

Description copied from interface: Visitor

Visits a RemoveDataCommand.

Specified by:

visitClearDataCommand in interface Visitor

Overrides:

visitClearDataCommand in class AbstractVisitor

Parameters:

ctx - invocation context

command - command to visit

Returns:

response from the visit

Throws:

Throwable - in the event of problems.

runPreparePhase

protected void runPreparePhase(PrepareCommand prepareMethod,
                               GlobalTransaction gtx,
                               InvocationContext ctx)
                        throws Throwable

Calls prepare(GlobalTransaction,List,org.jgroups.Address,boolean)) in all members except self. Waits for all responses. If one of the members failed to prepare, its return value will be an exception. If there is one exception we rethrow it. This will mark the current transaction as rolled back, which will cause the afterCompletion(int) callback to have a status of MARKED_ROLLBACK. When we get that call, we simply roll back the transaction.
If everything runs okay, the afterCompletion(int) callback will trigger the @link #runCommitPhase(GlobalTransaction)).

Throws:

Exception

Throwable