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

        try {
            newDb = new DatabaseImpl(nameLocker,
                                     databaseName, newId, envImpl, dbConfig);


            /* Get effective rep context and check for replica write. */
            ReplicationContext useRepContext = repContext;
            if (repContext == null) {
                useRepContext = newDb.getOperationRepContext(CREATE);
            }
            checkReplicaWrite(nameLocker, useRepContext);

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            }
        });
        
        final CursorImpl nameCursor = result.nameCursor;
        final DatabaseImpl dbImpl = result.dbImpl;
        final ReplicationContext useRepContext = result.repContext;
        try {


            /* Log a NameLN. */
            DatabaseEntry dataDbt = new DatabaseEntry(new byte[0]);
            nameCursor.putCurrent(null, // replaceKey

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            }
        });


        final CursorImpl nameCursor = result.nameCursor;
        final DatabaseImpl dbImpl = result.dbImpl;
        final ReplicationContext useRepContext = result.repContext;
        try {


            /*
             * Rename simply deletes the one entry in the naming tree and
             * replaces it with a new one. Remove the oldName->dbId entry and

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                    repContext :
                    dbImpl.getOperationRepContext(REMOVE);
            }
        });


        final ReplicationContext useRepContext = result.repContext;
        try {
            nameCursor = result.nameCursor;
            if (checkId != null && !checkId.equals(result.nameLN.getId())) {
                throw new DatabaseNotFoundException
                    ("ID mismatch: " + databaseName);

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                    dbImpl.getOperationRepContext(TRUNCATE, dbImpl.getId());
            }
        });


        final CursorImpl nameCursor = result.nameCursor;
        final ReplicationContext useRepContext = result.repContext;
        try {
            /*
             * Make a new database with an empty tree. Make the nameLN refer to
             * the id of the new database. If this database is replicated, the
             * new one should also be replicated, and vice versa.

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


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


                final long masterCommitTimeMs =
                        masterCommit.getTime().getTime();
                lastReplayedTxn = new TxnInfo(lastReplayedVLSN,
                                              masterCommitTimeMs);


                updateCommitStats(needsAck, syncPolicy, startNs);


                /* Respond to the feeder. */
                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 (LOG_TXN_ABORT.equalsType(entryType)) {


                nAborts.increment();
                final TxnAbort masterAbort = (TxnAbort) logEntry.getMainItem();
                final 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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         * write operations.
         */
        final DatabaseImpl dbImpl =
            repImpl.getRepNode().getReplica().getDbCache().get(dbId, repTxn);
        lnEntry.postFetchInit(dbImpl);
        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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    static ReplicationContext getMigrationRepContext(LN ln) {
        long vlsnSeq = ln.getVLSNSequence();
        if (vlsnSeq <= 0) {
            return ReplicationContext.NO_REPLICATE;
        }
        return new ReplicationContext(new VLSN(vlsnSeq),
                                      false /*inReplicationStream*/);
    }

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                          boolean abortKnownDeleted,
                          Txn txn,
                          ReplicationContext repContext) {


        super(entryType, nameLN, dbId, key, abortLsn, abortKnownDeleted, txn);
        ReplicationContext operationContext = repContext;


        operationType = repContext.getDbOperationType();
        if (DbOperationType.isWriteConfigType(operationType)) {
            replicatedCreateConfig =
                ((DbOpReplicationContext) operationContext).getCreateConfig();

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                          boolean abortKnownDeleted,
                          Txn txn,
                          ReplicationContext repContext) {


        super(entryType, nameLN, dbId, key, abortLsn, abortKnownDeleted, txn);
        ReplicationContext operationContext = repContext;


        operationType = repContext.getDbOperationType();
        if (operationType == DbOperationType.CREATE) {
            replicatedCreateConfig =
                ((DbOpReplicationContext) operationContext).getCreateConfig();

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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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