Examples with RequestContext org.neo4j.com.RequestContext used on opensource projects

Example 31 with RequestContext

use of org.neo4j.com.RequestContext in project neo4j by neo4j.

the class SwitchToSlave method copyStoreFromMaster.

void copyStoreFromMaster(MasterClient masterClient, CancellationRequest cancellationRequest, MoveAfterCopy moveAfterCopy) throws Throwable {
    try {
        userLog.info("Copying store from master");
        StoreCopyClient.StoreCopyRequester requester = new StoreCopyClient.StoreCopyRequester() {

            @Override
            public Response<?> copyStore(StoreWriter writer) {
                return masterClient.copyStore(new RequestContext(0, config.get(ClusterSettings.server_id).toIntegerIndex(), 0, BASE_TX_ID, 0), writer);
            }

            @Override
            public void done() {
            // Nothing to clean up here
            }
        };
        MoveAfterCopy moveAfterCopyWithLogging = (moves, fromDirectory, toDirectory) -> {
            userLog.info("Copied store from master to " + fromDirectory);
            msgLog.info("Starting post copy operation to move store from " + fromDirectory + " to " + storeDir);
            moveAfterCopy.move(moves, fromDirectory, toDirectory);
        };
        storeCopyClient.copyStore(requester, cancellationRequest, moveAfterCopyWithLogging);
        startServicesAgain();
        userLog.info("Finished copying store from master");
    } catch (Throwable t) {
        // Delete store so that we can copy from master without conflicts next time
        cleanStoreDir();
        throw t;
    }
}

Example 32 with RequestContext

use of org.neo4j.com.RequestContext in project neo4j by neo4j.

the class MasterClient214 method createPropertyKey.

@Override
public Response<Integer> createPropertyKey(RequestContext context, final String name) {
    Serializer serializer = buffer -> writeString(buffer, name);
    Deserializer<Integer> deserializer = (buffer, temporaryBuffer) -> buffer.readInt();
    return sendRequest(requestTypes.type(HaRequestTypes.Type.CREATE_PROPERTY_KEY), context, serializer, deserializer);
}

Example 33 with RequestContext

use of org.neo4j.com.RequestContext in project neo4j by neo4j.

the class SlaveUpdatePuller method doPullUpdates.

private void doPullUpdates() {
    try {
        RequestContext context = requestContextFactory.newRequestContext();
        try (Response<Void> ignored = master.pullUpdates(context)) {
            // Updates would be applied as part of response processing
            monitor.pulledUpdates(context.lastAppliedTransaction());
        }
        invalidEpochCappedLogger.reset();
        comExceptionCappedLogger.reset();
    } catch (InvalidEpochException e) {
        invalidEpochHandler.handle();
        invalidEpochCappedLogger.warn("Pull updates by " + this + " failed at the epoch check", e);
    } catch (ComException e) {
        invalidEpochCappedLogger.warn("Pull updates by " + this + " failed due to network error.", e);
    } catch (Throwable e) {
        logger.error("Pull updates by " + this + " failed", e);
    }
    lastUpdateTime.setLastUpdateTime(currentTimeMillis());
}

Example 34 with RequestContext

use of org.neo4j.com.RequestContext in project neo4j by neo4j.

the class BackupImpl method fullBackup.

@Override
public Response<Void> fullBackup(StoreWriter writer, boolean forensics) {
    try (StoreWriter storeWriter = writer) {
        logger.log("Full backup started...");
        RequestContext copyStartContext = storeCopyServer.flushStoresAndStreamStoreFiles(FULL_BACKUP_CHECKPOINT_TRIGGER, storeWriter, forensics);
        ResponsePacker responsePacker = new StoreCopyResponsePacker(logicalTransactionStore, transactionIdStore, logFileInformation, storeId, copyStartContext.lastAppliedTransaction() + 1, // mandatory transaction id
        storeCopyServer.monitor());
        long optionalTransactionId = copyStartContext.lastAppliedTransaction();
        return responsePacker.packTransactionStreamResponse(anonymous(optionalTransactionId), null);
    } finally {
        logger.log("Full backup finished.");
    }
}

Example 35 with RequestContext

use of org.neo4j.com.RequestContext in project neo4j by neo4j.

the class MasterImpl method getOngoingTransactions.

// =====================================================================
// Just some methods which aren't really used when running a HA cluster,
// but exposed so that other tools can reach that information.
// =====================================================================
public Map<Integer, Collection<RequestContext>> getOngoingTransactions() {
    Map<Integer, Collection<RequestContext>> result = new HashMap<>();
    Set<RequestContext> contexts = conversationManager.getActiveContexts();
    for (RequestContext context : contexts.toArray(new RequestContext[contexts.size()])) {
        Collection<RequestContext> txs = result.computeIfAbsent(context.machineId(), k -> new ArrayList<>());
        txs.add(context);
    }
    return result;
}