程序包 org.apache.bookkeeper.mledger.impl

接口 MetaStore

所有已知实现类:

MetaStoreImpl

public interface MetaStore

Interface that describes the operations that the ManagedLedger need to do on the metadata store.

嵌套类概要

嵌套类

修饰符和类型	接口	说明
static interface	MetaStore.MetaStoreCallback<T>
static interface	MetaStore.UpdateLedgersIdsCallback

方法概要

修饰符和类型	方法	说明
CompletableFuture<Boolean>	asyncExists(String ledgerName)	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, org.apache.pulsar.metadata.api.Stat stat, MetaStore.MetaStoreCallback<Void> callback)	Update the persisted position of a cursor.
void	asyncUpdateLedgerIds(String ledgerName, MLDataFormats.ManagedLedgerInfo mlInfo, org.apache.pulsar.metadata.api.Stat stat, MetaStore.MetaStoreCallback<Void> callback)
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.
default void	getManagedLedgerInfo(String ledgerName, boolean createIfMissing, MetaStore.MetaStoreCallback<MLDataFormats.ManagedLedgerInfo> callback)	Get the metadata used by the ManagedLedger.
Iterable<String>	getManagedLedgers()	Get a list of all the managed ledgers in the system.
void	removeManagedLedger(String ledgerName, MetaStore.MetaStoreCallback<Void> callback)	Drop the persistent state for the ManagedLedger and all its associated consumers.

方法详细资料

getManagedLedgerInfo

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

Get the metadata used by the ManagedLedger.

参数:

ledgerName - the name of the ManagedLedger

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

抛出:

ManagedLedgerException.MetaStoreException

getManagedLedgerInfo

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

Get the metadata used by the ManagedLedger.

参数:

ledgerName - the name of the ManagedLedger

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

properties - ledger properties

抛出:

ManagedLedgerException.MetaStoreException

asyncUpdateLedgerIds

void asyncUpdateLedgerIds(String ledgerName,
 MLDataFormats.ManagedLedgerInfo mlInfo,
 org.apache.pulsar.metadata.api.Stat stat,
 MetaStore.MetaStoreCallback<Void> callback)

参数:

ledgerName - the name of the ManagedLedger

mlInfo - managed ledger info

stat - version object associated with current state

callback - callback object

getCursors

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

Get the list of cursors registered on a ManagedLedger.

参数:

ledgerName - the name of the ManagedLedger

asyncGetCursorInfo

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

Get the ledger id associated with a cursor.

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

参数:

ledgerName -

cursorName -

callback -

asyncUpdateCursorInfo

void asyncUpdateCursorInfo(String ledgerName,
 String cursorName,
 MLDataFormats.ManagedCursorInfo info,
 org.apache.pulsar.metadata.api.Stat stat,
 MetaStore.MetaStoreCallback<Void> callback)

Update the persisted position of a cursor.

参数:

ledgerName - the name of the ManagedLedger

cursorName -

info -

stat -

callback - the callback

抛出:

ManagedLedgerException.MetaStoreException

asyncRemoveCursor

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

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

参数:

ledgerName - the name of the ManagedLedger

cursorName - the cursor name

callback - callback object

removeManagedLedger

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

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

参数:

ledgerName - the name of the ManagedLedger

callback - callback object

getManagedLedgers

Iterable<String> getManagedLedgers()
                            throws ManagedLedgerException.MetaStoreException

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

返回:

an Iterable of the names of the managed ledgers

抛出:

ManagedLedgerException.MetaStoreException

asyncExists

CompletableFuture<Boolean> asyncExists(String ledgerName)

Check ledger exists.

参数:

ledgerName - String

返回:

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