org.neo4j.kernel.ha
Class MasterClient

java.lang.Object
  org.neo4j.com.Client<Master>
      org.neo4j.kernel.ha.MasterClient

All Implemented Interfaces:

org.jboss.netty.channel.ChannelPipelineFactory, Master

public class MasterClient
extends Client<Master>
implements Master

The Master a slave should use to communicate with its master. It serializes requests and sends them to the master, more specifically MasterServer (which delegates to MasterImpl on the master side.

Nested Class Summary

protected static class	MasterClient.AcquireLockSerializer
static class	MasterClient.HaRequestType

Field Summary

protected static Deserializer<LockResult>

LOCK_RESULT_DESERIALIZER

Fields inherited from class org.neo4j.com.Client

DEFAULT_MAX_NUMBER_OF_CONCURRENT_CHANNELS_PER_CLIENT, DEFAULT_READ_RESPONSE_TIMEOUT_SECONDS, NO_STORE_ID_GETTER

Constructor Summary

MasterClient(String hostNameOrIp, int port, org.neo4j.kernel.AbstractGraphDatabase graphDb, int readTimeoutSeconds, int maxConcurrentChannels)

Method Summary

Response<LockResult>	acquireGraphReadLock(SlaveContext context)
Response<LockResult>	acquireGraphWriteLock(SlaveContext context)
Response<LockResult>	acquireNodeReadLock(SlaveContext context, long... nodes)
Response<LockResult>	acquireNodeWriteLock(SlaveContext context, long... nodes)
Response<LockResult>	acquireRelationshipReadLock(SlaveContext context, long... relationships)
Response<LockResult>	acquireRelationshipWriteLock(SlaveContext context, long... relationships)
Response<IdAllocation>	allocateIds(org.neo4j.kernel.IdType idType)
Response<Long>	commitSingleResourceTransaction(SlaveContext context, String resource, TxExtractor txGetter)
Response<Void>	copyStore(SlaveContext context, StoreWriter writer)
Response<Integer>	createRelationshipType(SlaveContext context, String name)
Response<Void>	finishTransaction(SlaveContext context, boolean success)
Response<org.neo4j.helpers.Pair<Integer,Long>>	getMasterIdForCommittedTx(long txId, org.neo4j.kernel.impl.nioneo.store.StoreId storeId) Gets the master id for a given txId, also a checksum for that tx.
Response<Void>	initializeTx(SlaveContext context) Called when the first write operation of lock is performed for a transaction.
Response<Void>	pullUpdates(SlaveContext context)
protected static IdAllocation	readIdAllocation(org.jboss.netty.buffer.ChannelBuffer buffer)
void	rollbackOngoingTransactions(SlaveContext context)
protected boolean	shouldCheckStoreId(RequestType<Master> type)

Methods inherited from class org.neo4j.com.Client

closeChannel, getInternalProtocolVersion, getMyStoreId, getPipeline, readTransactionStreamHeader, readTransactionStreams, releaseChannel, sendRequest, sendRequest, shutdown, storeIdGetterForDb, writeContext

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.neo4j.kernel.ha.Master

shutdown

Field Detail

LOCK_RESULT_DESERIALIZER

protected static final Deserializer<LockResult> LOCK_RESULT_DESERIALIZER

Constructor Detail

MasterClient

public MasterClient(String hostNameOrIp,
                    int port,
                    org.neo4j.kernel.AbstractGraphDatabase graphDb,
                    int readTimeoutSeconds,
                    int maxConcurrentChannels)

Method Detail

shouldCheckStoreId

protected boolean shouldCheckStoreId(RequestType<Master> type)

Overrides:

shouldCheckStoreId in class Client<Master>

allocateIds

public Response<IdAllocation> allocateIds(org.neo4j.kernel.IdType idType)

Specified by:

allocateIds in interface Master

createRelationshipType

public Response<Integer> createRelationshipType(SlaveContext context,
                                                String name)

Specified by:

createRelationshipType in interface Master

initializeTx

public Response<Void> initializeTx(SlaveContext context)

Description copied from interface: Master

Called when the first write operation of lock is performed for a transaction.

Specified by:

initializeTx in interface Master

acquireNodeWriteLock

public Response<LockResult> acquireNodeWriteLock(SlaveContext context,
                                                 long... nodes)

Specified by:

acquireNodeWriteLock in interface Master

acquireNodeReadLock

public Response<LockResult> acquireNodeReadLock(SlaveContext context,
                                                long... nodes)

Specified by:

acquireNodeReadLock in interface Master

acquireRelationshipWriteLock

public Response<LockResult> acquireRelationshipWriteLock(SlaveContext context,
                                                         long... relationships)

Specified by:

acquireRelationshipWriteLock in interface Master

acquireRelationshipReadLock

public Response<LockResult> acquireRelationshipReadLock(SlaveContext context,
                                                        long... relationships)

Specified by:

acquireRelationshipReadLock in interface Master

acquireGraphWriteLock

public Response<LockResult> acquireGraphWriteLock(SlaveContext context)

Specified by:

acquireGraphWriteLock in interface Master

acquireGraphReadLock

public Response<LockResult> acquireGraphReadLock(SlaveContext context)

Specified by:

acquireGraphReadLock in interface Master

commitSingleResourceTransaction

public Response<Long> commitSingleResourceTransaction(SlaveContext context,
                                                      String resource,
                                                      TxExtractor txGetter)

Specified by:

commitSingleResourceTransaction in interface Master

finishTransaction

public Response<Void> finishTransaction(SlaveContext context,
                                        boolean success)

Specified by:

finishTransaction in interface Master

rollbackOngoingTransactions

public void rollbackOngoingTransactions(SlaveContext context)

pullUpdates

public Response<Void> pullUpdates(SlaveContext context)

Specified by:

pullUpdates in interface Master

getMasterIdForCommittedTx

public Response<org.neo4j.helpers.Pair<Integer,Long>> getMasterIdForCommittedTx(long txId,
                                                                                org.neo4j.kernel.impl.nioneo.store.StoreId storeId)

Description copied from interface: Master

Gets the master id for a given txId, also a checksum for that tx.

Specified by:

getMasterIdForCommittedTx in interface Master

Parameters:

txId - the transaction id to get the data for.

storeId - clients store id.

Returns:

the master id for a given txId, also a checksum for that tx.

copyStore

public Response<Void> copyStore(SlaveContext context,
                                StoreWriter writer)

Specified by:

copyStore in interface Master

readIdAllocation

protected static IdAllocation readIdAllocation(org.jboss.netty.buffer.ChannelBuffer buffer)