Examples with TXSynchronizationRunnable org.apache.geode.internal.cache.TXSynchronizationRunnable used on opensource projects

Example 1 with TXSynchronizationRunnable

use of org.apache.geode.internal.cache.TXSynchronizationRunnable in project geode by apache.

the class TXSynchronizationCommand method cmdExecute.

/*
   * (non-Javadoc)
   * 
   * @see
   * org.apache.geode.internal.cache.tier.sockets.BaseCommand#cmdExecute(org.apache.geode.internal.
   * cache.tier.sockets.Message, org.apache.geode.internal.cache.tier.sockets.ServerConnection,
   * long)
   */
@Override
public void cmdExecute(final Message clientMessage, final ServerConnection serverConnection, long start) throws IOException, ClassNotFoundException, InterruptedException {
    serverConnection.setAsTrue(REQUIRES_RESPONSE);
    CompletionType type = CompletionType.values()[clientMessage.getPart(0).getInt()];
    /* int txIdInt = */
    // [bruce] not sure if we need to
    clientMessage.getPart(1).getInt();
    // transmit this
    final Part statusPart;
    if (type == CompletionType.AFTER_COMPLETION) {
        statusPart = clientMessage.getPart(2);
    } else {
        statusPart = null;
    }
    final TXManagerImpl txMgr = (TXManagerImpl) serverConnection.getCache().getCacheTransactionManager();
    final InternalDistributedMember member = (InternalDistributedMember) serverConnection.getProxyID().getDistributedMember();
    // get the tx state without associating it with this thread. That's done later
    final TXStateProxy txProxy = txMgr.masqueradeAs(clientMessage, member, true);
    // releases them
    if (txProxy != null) {
        final boolean isDebugEnabled = logger.isDebugEnabled();
        try {
            if (type == CompletionType.BEFORE_COMPLETION) {
                Runnable beforeCompletion = new Runnable() {

                    @SuppressWarnings("synthetic-access")
                    public void run() {
                        TXStateProxy txState = null;
                        Throwable failureException = null;
                        try {
                            txState = txMgr.masqueradeAs(clientMessage, member, false);
                            if (isDebugEnabled) {
                                logger.debug("Executing beforeCompletion() notification for transaction {}", clientMessage.getTransactionId());
                            }
                            txState.setIsJTA(true);
                            txState.beforeCompletion();
                            try {
                                writeReply(clientMessage, serverConnection);
                            } catch (IOException e) {
                                if (isDebugEnabled) {
                                    logger.debug("Problem writing reply to client", e);
                                }
                            }
                            serverConnection.setAsTrue(RESPONDED);
                        } catch (ReplyException e) {
                            failureException = e.getCause();
                        } catch (InterruptedException e) {
                            Thread.currentThread().interrupt();
                        } catch (Exception e) {
                            failureException = e;
                        } finally {
                            txMgr.unmasquerade(txState);
                        }
                        if (failureException != null) {
                            try {
                                writeException(clientMessage, failureException, false, serverConnection);
                            } catch (IOException ioe) {
                                if (isDebugEnabled) {
                                    logger.debug("Problem writing reply to client", ioe);
                                }
                            }
                            serverConnection.setAsTrue(RESPONDED);
                        }
                    }
                };
                TXSynchronizationRunnable sync = new TXSynchronizationRunnable(beforeCompletion);
                txProxy.setSynchronizationRunnable(sync);
                Executor exec = InternalDistributedSystem.getConnectedInstance().getDistributionManager().getWaitingThreadPool();
                exec.execute(sync);
                sync.waitForFirstExecution();
            } else {
                Runnable afterCompletion = new Runnable() {

                    @SuppressWarnings("synthetic-access")
                    public void run() {
                        TXStateProxy txState = null;
                        try {
                            txState = txMgr.masqueradeAs(clientMessage, member, false);
                            int status = statusPart.getInt();
                            if (isDebugEnabled) {
                                logger.debug("Executing afterCompletion({}) notification for transaction {}", status, clientMessage.getTransactionId());
                            }
                            txState.setIsJTA(true);
                            txState.afterCompletion(status);
                            // GemFire commits during afterCompletion - send the commit info back to the client
                            // where it can be applied to the local cache
                            TXCommitMessage cmsg = txState.getCommitMessage();
                            try {
                                CommitCommand.writeCommitResponse(cmsg, clientMessage, serverConnection);
                                txMgr.removeHostedTXState(txState.getTxId());
                            } catch (IOException e) {
                                // not much can be done here
                                if (isDebugEnabled || (e instanceof MessageTooLargeException)) {
                                    logger.warn("Problem writing reply to client", e);
                                }
                            }
                            serverConnection.setAsTrue(RESPONDED);
                        } catch (RuntimeException e) {
                            try {
                                writeException(clientMessage, e, false, serverConnection);
                            } catch (IOException ioe) {
                                if (isDebugEnabled) {
                                    logger.debug("Problem writing reply to client", ioe);
                                }
                            }
                            serverConnection.setAsTrue(RESPONDED);
                        } catch (InterruptedException e) {
                            Thread.currentThread().interrupt();
                        } finally {
                            txMgr.unmasquerade(txState);
                        }
                    }
                };
                // if there was a beforeCompletion call then there will be a thread
                // sitting in the waiting pool to execute afterCompletion. Otherwise
                // we have failed-over and may need to do beforeCompletion & hope that it works
                TXSynchronizationRunnable sync = txProxy.getSynchronizationRunnable();
                if (sync != null) {
                    sync.runSecondRunnable(afterCompletion);
                } else {
                    if (statusPart.getInt() == Status.STATUS_COMMITTED) {
                        TXStateProxy txState = txMgr.masqueradeAs(clientMessage, member, false);
                        try {
                            if (isDebugEnabled) {
                                logger.debug("Executing beforeCompletion() notification for transaction {} after failover", clientMessage.getTransactionId());
                            }
                            txState.setIsJTA(true);
                            txState.beforeCompletion();
                        } finally {
                            txMgr.unmasquerade(txState);
                        }
                    }
                    afterCompletion.run();
                }
            }
        } catch (Exception e) {
            writeException(clientMessage, MessageType.EXCEPTION, e, false, serverConnection);
            serverConnection.setAsTrue(RESPONDED);
        }
        if (isDebugEnabled) {
            logger.debug("Sent tx synchronization response");
        }
    }
}