Examples of com.sleepycat.je.log.ReplicationContext

com.sleepycat.je.log.ReplicationContext
ReplicationContext provides context about high-level operations so that the logging level can determine which replication related actions are required for a given Loggable item. Those lower level actions are: - does a log entry need to be logged with a VLSN generated by this (master) node? - does the log entry need to be logged with the VLSN which accompanied a replication message? - do we need to wait for PERM acks after logging an entry? - do we need to record the client VLSN that was just written to the log? ReplicationContext subclasses may hold additional information about the logical operation which instigated logging, so that this can be added to the log entry. All LogEntryType(s) have a "replicationPossible" attribute. For example, INs will never be replicated, but LN_TX's may or may not be replicated, depending on whether the owning database is replicated. If a LogEntryType will never be replicated, it should be logged with the static ReplicationContext.NO_REPLICATE instance. If replication is possible, the replication context may be: - one allocated for this operation, as the result of client apply - the static instance MASTER, if this node is the replication master - the static instance NO_REPLICATE, if this is a local operation

                    repNode.getVLSNFreezeLatch().awaitThaw();
                    repNode.getMasterStatus().assertSync();
                }


                repTxn.commit(syncPolicy,
                              new ReplicationContext(lastReplayedVLSN),
                              masterCommit.getMasterNodeId());


                Timestamp commitTime = masterCommit.getTime();
                lastReplayedTxn = new TxnInfo(lastReplayedVLSN,
                                              commitTime.getTime());


                /* Respond to the feeder. */
                long commitNanos = System.nanoTime() -
                    messageProcessingStartTime;
                updateCommitStats(needsAck, syncPolicy, commitNanos);


                if (commitNanos > ackTimeoutLogThresholdInNanos &&
                    logger.isLoggable(Level.INFO)) {
                    LoggerUtils.info
                        (logger, repImpl,
                         "Replay commit time: " + (commitNanos / 1000000) +
                         " ms exceeded log threshold: " +
                         (ackTimeoutLogThresholdInNanos / 1000000));
                }


                if (needsAck) {
                    protocol.write(protocol.new Ack(repTxn.getId()),
                                   namedChannel);
                }


                /*
                 * The group refresh and recalculation can be expensive, since
                 * it may require a database read. Do it after the ack.
                 */
                if (repTxn.getRepGroupDbChange() && canRefreshGroup(repTxn)) {
                    repNode.refreshCachedGroup();
                    repNode.recalculateGlobalCBVLSN();
                }


                nElapsedTxnTime.add(repTxn.elapsedTime());
            } else if (LogEntryType.LOG_TXN_ABORT.equalsType(entryType)) {


                nAborts.increment();
                TxnAbort masterAbort = (TxnAbort) logEntry.getMainItem();
                ReplicationContext abortContext =
                    new ReplicationContext(wireRecord.getVLSN());
                if (logger.isLoggable(Level.FINEST)) {
                    LoggerUtils.finest(logger, repImpl,
                                       "abort called for " + repTxn.getId() +
                                       " masterId=" +
                                       masterAbort.getMasterNodeId() +

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         * for txns that take read locks, and a replicated txn consists only of
         * write operations.
         */
        final DatabaseImpl dbImpl = repImpl.getDbTree().getDb
            (dbId, -1, repImpl.getRepNode().getReplica().getDbCache());
        final ReplicationContext repContext =
            new ReplicationContext(wireRecord.getVLSN());
        final Cursor cursor = DbInternal.makeCursor(dbImpl, repTxn,
                                                    null /*cursorConfig*/);
        try {
            OperationStatus status;
            final LN ln = lnEntry.getLN();

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                nameLN = replicatedLN;
            } else {
                nameLN = new NameLN(newId, envImpl, newDb.isReplicated());
            }


            ReplicationContext useRepContext = repContext;
            if (repContext == null) {
                useRepContext = newDb.getOperationRepContext(CREATE);
            }
            nameCursor.putLN(databaseName.getBytes("UTF-8"),// key
                             nameLN,

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Related Classes of com.sleepycat.je.log.ReplicationContext

com.sleepycat.je.cleaner.Cleaner

com.sleepycat.je.dbi.DbTree

com.sleepycat.je.log.entry.NameLNLogEntry

com.sleepycat.je.rep.impl.node.Replay

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