org.neo4j.kernel.ha
Class MasterImpl

java.lang.Object
  org.neo4j.kernel.ha.MasterImpl

All Implemented Interfaces:

Master

public class MasterImpl
extends Object
implements Master

This is the real master code that executes on a master. The actual communication over network happens in MasterClient and MasterServer.

Field Summary

static int

UNFINISHED_TRANSACTION_CLEANUP_DELAY

Constructor Summary

MasterImpl(GraphDatabaseService db, Map<String,String> config)

Method Summary

Response<LockResult>	acquireIndexReadLock(SlaveContext context, String index, String key)
Response<LockResult>	acquireIndexWriteLock(SlaveContext context, String index, String key)
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(IdType idType)
Response<Long>	commitSingleResourceTransaction(SlaveContext context, String resource, TxExtractor txGetter)
Response<Void>	copyStore(SlaveContext context, StoreWriter writer)
Response<Void>	copyTransactions(SlaveContext context, String dsName, long startTxId, long endTxId)
Response<Integer>	createRelationshipType(SlaveContext context, String name)
Response<Void>	finishTransaction(SlaveContext context, boolean success)
GraphDatabaseService	getGraphDb()
Response<Pair<Integer,Long>>	getMasterIdForCommittedTx(long txId, StoreId storeId) Gets the master id for a given txId, also a checksum for that tx.
Map<Integer,Collection<SlaveContext>>	getOngoingTransactions()
Response<Void>	initializeTx(SlaveContext context) Called when the first write operation of lock is performed for a transaction.
Response<Void>	pullUpdates(SlaveContext context)
void	shutdown()

Methods inherited from class java.lang.Object

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

Field Detail

UNFINISHED_TRANSACTION_CLEANUP_DELAY

public static final int UNFINISHED_TRANSACTION_CLEANUP_DELAY

See Also:

Constant Field Values

Constructor Detail

MasterImpl

public MasterImpl(GraphDatabaseService db,
                  Map<String,String> config)

Method Detail

getGraphDb

public GraphDatabaseService getGraphDb()

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

acquireNodeReadLock

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

Specified by:

acquireNodeReadLock in interface Master

acquireNodeWriteLock

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

Specified by:

acquireNodeWriteLock in interface Master

acquireRelationshipReadLock

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

Specified by:

acquireRelationshipReadLock in interface Master

acquireRelationshipWriteLock

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

Specified by:

acquireRelationshipWriteLock in interface Master

allocateIds

public Response<IdAllocation> allocateIds(IdType idType)

Specified by:

allocateIds 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

createRelationshipType

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

Specified by:

createRelationshipType in interface Master

pullUpdates

public Response<Void> pullUpdates(SlaveContext context)

Specified by:

pullUpdates in interface Master

getMasterIdForCommittedTx

public Response<Pair<Integer,Long>> getMasterIdForCommittedTx(long txId,
                                                              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

copyTransactions

public Response<Void> copyTransactions(SlaveContext context,
                                       String dsName,
                                       long startTxId,
                                       long endTxId)

Specified by:

copyTransactions in interface Master

shutdown

public void shutdown()

Specified by:

shutdown in interface Master

acquireIndexReadLock

public Response<LockResult> acquireIndexReadLock(SlaveContext context,
                                                 String index,
                                                 String key)

Specified by:

acquireIndexReadLock in interface Master

acquireIndexWriteLock

public Response<LockResult> acquireIndexWriteLock(SlaveContext context,
                                                  String index,
                                                  String key)

Specified by:

acquireIndexWriteLock in interface Master

getOngoingTransactions

public Map<Integer,Collection<SlaveContext>> getOngoingTransactions()