Package org.apache.ignite.internal.processors.cache

Class WalStateManager.WALDisableContext

java.lang.Object

org.apache.ignite.internal.processors.cache.WalStateManager.WALDisableContext

All Implemented Interfaces:

MetastorageLifecycleListener

Enclosing class:

WalStateManager

public static class WalStateManager.WALDisableContext
extends Object
implements MetastorageLifecycleListener

Temporary storage for disabled WALs of group.

Field Summary

Fields

Modifier and Type	Field	Description
static String	WAL_DISABLED

Constructor Summary

Constructors

Constructor	Description
WALDisableContext(IgniteCacheDatabaseSharedManager dbMgr, IgnitePageStoreManager pageStoreMgr, @Nullable IgniteLogger log)

Method Summary

Modifier and Type	Method	Description
boolean	check()
protected void	disableWAL(boolean disable)
void	execute(IgniteRunnable cls)
void	onReadyForRead(ReadOnlyMetastorage ms)	Is called when metastorage is made ready for read-only operations very early on node startup phase.
void	onReadyForReadWrite(ReadWriteMetastorage ms)	Fully functional metastore capable of performing reading and writing operations.
protected void	removeMetaStoreDisableWALFlag()
protected void	writeMetaStoreDisableWALFlag()

Methods inherited from class java.lang.Object

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

Field Detail

WAL_DISABLED

public static final String WAL_DISABLED

See Also:

Constant Field Values

Constructor Detail

WALDisableContext

public WALDisableContext(IgniteCacheDatabaseSharedManager dbMgr,
                         IgnitePageStoreManager pageStoreMgr,
                         @Nullable
                         @Nullable IgniteLogger log)

Parameters:

dbMgr - Database manager.

pageStoreMgr - Page store manager.

log -

Method Detail

execute

public void execute(IgniteRunnable cls)
             throws IgniteCheckedException

Parameters:

cls - Closure to execute with disabled WAL.

Throws:

IgniteCheckedException - If execution failed.

writeMetaStoreDisableWALFlag

protected void writeMetaStoreDisableWALFlag()
                                     throws IgniteCheckedException

Throws:

IgniteCheckedException - If write meta store flag failed.

removeMetaStoreDisableWALFlag

protected void removeMetaStoreDisableWALFlag()
                                      throws IgniteCheckedException

Throws:

IgniteCheckedException - If remove meta store flag failed.

disableWAL

protected void disableWAL(boolean disable)
                   throws IgniteCheckedException

Parameters:

disable - Flag wal disable.

Throws:

IgniteCheckedException

onReadyForRead

public void onReadyForRead(ReadOnlyMetastorage ms)
                    throws IgniteCheckedException

Is called when metastorage is made ready for read-only operations very early on node startup phase. Reference for read-only metastorage should be used only within this method and shouldn't be stored to any field.

Specified by:

onReadyForRead in interface MetastorageLifecycleListener

Parameters:

ms - Read-only meta storage.

Throws:

IgniteCheckedException

onReadyForReadWrite

public void onReadyForReadWrite(ReadWriteMetastorage ms)
                         throws IgniteCheckedException

Fully functional metastore capable of performing reading and writing operations. Components interested in using metastore are allowed to keep reference passed into the method in their fields.

Specified by:

onReadyForReadWrite in interface MetastorageLifecycleListener

Parameters:

ms - Fully functional meta storage.

Throws:

IgniteCheckedException

check

public boolean check()

Returns:

true If WAL is disabled.