Package org.apache.bookkeeper.mledger.impl

Class MetaStoreImpl

java.lang.Object

org.apache.bookkeeper.mledger.impl.MetaStoreImpl

All Implemented Interfaces:

Consumer<Notification>, MetaStore

public class MetaStoreImpl
extends Object
implements MetaStore, Consumer<Notification>

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.bookkeeper.mledger.impl.MetaStore

MetaStore.MetaStoreCallback<T>, MetaStore.UpdateCallback<T>, MetaStore.UpdateLedgersIdsCallback

Constructor Summary

Constructors

Constructor	Description
MetaStoreImpl(MetadataStore store, org.apache.bookkeeper.common.util.OrderedExecutor executor)
MetaStoreImpl(MetadataStore store, org.apache.bookkeeper.common.util.OrderedExecutor executor, MetadataCompressionConfig ledgerInfoCompressionConfig, MetadataCompressionConfig cursorInfoCompressionConfig)

Method Summary

Modifier and Type	Method	Description
void	accept(Notification notification)
CompletableFuture<Boolean>	asyncExists(String path)	Check ledger exists.
void	asyncGetCursorInfo(String ledgerName, String cursorName, MetaStore.MetaStoreCallback<MLDataFormats.ManagedCursorInfo> callback)	Get the ledger id associated with a cursor.
void	asyncRemoveCursor(String ledgerName, String cursorName, MetaStore.MetaStoreCallback<Void> callback)	Drop the persistent state of a consumer from the metadata store.
void	asyncUpdateCursorInfo(String ledgerName, String cursorName, MLDataFormats.ManagedCursorInfo info, Stat stat, MetaStore.MetaStoreCallback<Void> callback)	Update the persisted position of a cursor.
void	asyncUpdateLedgerIds(String ledgerName, MLDataFormats.ManagedLedgerInfo mlInfo, Stat stat, MetaStore.MetaStoreCallback<Void> callback)
byte[]	compressCursorInfo(MLDataFormats.ManagedCursorInfo managedCursorInfo)
byte[]	compressLedgerInfo(MLDataFormats.ManagedLedgerInfo managedLedgerInfo)
void	getCursors(String ledgerName, MetaStore.MetaStoreCallback<List<String>> callback)	Get the list of cursors registered on a ManagedLedger.
void	getManagedLedgerInfo(String ledgerName, boolean createIfMissing, Map<String,String> properties, MetaStore.MetaStoreCallback<MLDataFormats.ManagedLedgerInfo> callback)	Get the metadata used by the ManagedLedger.
CompletableFuture<Map<String,String>>	getManagedLedgerPropertiesAsync(String name)	Get managed ledger properties from meta store.
Iterable<String>	getManagedLedgers()	Get a list of all the managed ledgers in the system.
MLDataFormats.ManagedCursorInfo	parseManagedCursorInfo(byte[] data)
MLDataFormats.ManagedLedgerInfo	parseManagedLedgerInfo(byte[] data)
void	removeManagedLedger(String ledgerName, MetaStore.MetaStoreCallback<Void> callback)	Drop the persistent state for the ManagedLedger and all its associated consumers.
void	unwatchManagedLedgerInfo(String ledgerName)	Unwatch the metadata changes for ledgerName.
void	watchManagedLedgerInfo(String ledgerName, MetaStore.UpdateCallback<MLDataFormats.ManagedLedgerInfo> callback)	Watch the metadata used by the ManagedLedger.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Consumer

andThen

Methods inherited from interface org.apache.bookkeeper.mledger.impl.MetaStore

getManagedLedgerInfo

Constructor Details

MetaStoreImpl

public MetaStoreImpl(MetadataStore store,
 org.apache.bookkeeper.common.util.OrderedExecutor executor)

MetaStoreImpl

public MetaStoreImpl(MetadataStore store,
 org.apache.bookkeeper.common.util.OrderedExecutor executor,
 MetadataCompressionConfig ledgerInfoCompressionConfig,
 MetadataCompressionConfig cursorInfoCompressionConfig)

Method Details

getManagedLedgerInfo

public void getManagedLedgerInfo(String ledgerName,
 boolean createIfMissing,
 Map<String,String> properties,
 MetaStore.MetaStoreCallback<MLDataFormats.ManagedLedgerInfo> callback)

Description copied from interface: MetaStore

Get the metadata used by the ManagedLedger.

Specified by:

getManagedLedgerInfo in interface MetaStore

Parameters:

ledgerName - the name of the ManagedLedger

createIfMissing - whether the managed ledger metadata should be created if it doesn't exist already

properties - ledger properties

getManagedLedgerPropertiesAsync

public CompletableFuture<Map<String,String>> getManagedLedgerPropertiesAsync(String name)

Description copied from interface: MetaStore

Get managed ledger properties from meta store.

Specified by:

getManagedLedgerPropertiesAsync in interface MetaStore

Parameters:

name - ledgerName

Returns:

a future represents the result of the operation.

asyncUpdateLedgerIds

public void asyncUpdateLedgerIds(String ledgerName,
 MLDataFormats.ManagedLedgerInfo mlInfo,
 Stat stat,
 MetaStore.MetaStoreCallback<Void> callback)

Specified by:

asyncUpdateLedgerIds in interface MetaStore

Parameters:

ledgerName - the name of the ManagedLedger

mlInfo - managed ledger info

stat - version object associated with current state

callback - callback object

getCursors

public void getCursors(String ledgerName,
 MetaStore.MetaStoreCallback<List<String>> callback)

Description copied from interface: MetaStore

Get the list of cursors registered on a ManagedLedger.

Specified by:

getCursors in interface MetaStore

Parameters:

ledgerName - the name of the ManagedLedger

asyncGetCursorInfo

public void asyncGetCursorInfo(String ledgerName,
 String cursorName,
 MetaStore.MetaStoreCallback<MLDataFormats.ManagedCursorInfo> callback)

Description copied from interface: MetaStore

Get the ledger id associated with a cursor.

This ledger id will contains the mark-deleted position for the cursor.

Specified by:

asyncGetCursorInfo in interface MetaStore

asyncUpdateCursorInfo

public void asyncUpdateCursorInfo(String ledgerName,
 String cursorName,
 MLDataFormats.ManagedCursorInfo info,
 Stat stat,
 MetaStore.MetaStoreCallback<Void> callback)

Description copied from interface: MetaStore

Update the persisted position of a cursor.

Specified by:

asyncUpdateCursorInfo in interface MetaStore

Parameters:

ledgerName - the name of the ManagedLedger

callback - the callback

asyncRemoveCursor

public void asyncRemoveCursor(String ledgerName,
 String cursorName,
 MetaStore.MetaStoreCallback<Void> callback)

Description copied from interface: MetaStore

Drop the persistent state of a consumer from the metadata store.

Specified by:

asyncRemoveCursor in interface MetaStore

Parameters:

ledgerName - the name of the ManagedLedger

cursorName - the cursor name

callback - callback object

removeManagedLedger

public void removeManagedLedger(String ledgerName,
 MetaStore.MetaStoreCallback<Void> callback)

Description copied from interface: MetaStore

Drop the persistent state for the ManagedLedger and all its associated consumers.

Specified by:

removeManagedLedger in interface MetaStore

Parameters:

ledgerName - the name of the ManagedLedger

callback - callback object

getManagedLedgers

public Iterable<String> getManagedLedgers()
                                   throws ManagedLedgerException.MetaStoreException

Description copied from interface: MetaStore

Get a list of all the managed ledgers in the system.

Specified by:

getManagedLedgers in interface MetaStore

Returns:

an Iterable of the names of the managed ledgers

Throws:

ManagedLedgerException.MetaStoreException

asyncExists

public CompletableFuture<Boolean> asyncExists(String path)

Description copied from interface: MetaStore

Check ledger exists.

Specified by:

asyncExists in interface MetaStore

Parameters:

path - String

Returns:

a future represents the result of the operation. an instance of Boolean is returned if the operation succeeds.

watchManagedLedgerInfo

public void watchManagedLedgerInfo(String ledgerName,
 MetaStore.UpdateCallback<MLDataFormats.ManagedLedgerInfo> callback)

Description copied from interface: MetaStore

Watch the metadata used by the ManagedLedger.

Specified by:

watchManagedLedgerInfo in interface MetaStore

unwatchManagedLedgerInfo

public void unwatchManagedLedgerInfo(String ledgerName)

Description copied from interface: MetaStore

Unwatch the metadata changes for ledgerName.

Specified by:

unwatchManagedLedgerInfo in interface MetaStore

accept

public void accept(Notification notification)

Specified by:

accept in interface Consumer<Notification>

compressLedgerInfo

public byte[] compressLedgerInfo(MLDataFormats.ManagedLedgerInfo managedLedgerInfo)

compressCursorInfo

public byte[] compressCursorInfo(MLDataFormats.ManagedCursorInfo managedCursorInfo)

parseManagedLedgerInfo

public MLDataFormats.ManagedLedgerInfo parseManagedLedgerInfo(byte[] data)
                                                       throws com.google.protobuf.InvalidProtocolBufferException

Throws:

com.google.protobuf.InvalidProtocolBufferException

parseManagedCursorInfo

public MLDataFormats.ManagedCursorInfo parseManagedCursorInfo(byte[] data)
                                                       throws com.google.protobuf.InvalidProtocolBufferException

Throws:

com.google.protobuf.InvalidProtocolBufferException