org.apache.ratis.server.storage

类 StorageImplUtils

java.lang.Object

org.apache.ratis.server.storage.StorageImplUtils

public final class StorageImplUtils
extends Object

方法概要

限定符和类型	方法和说明
static RaftStorageImpl	initRaftStorage(String storageDirName, RaftStorage.StartupOption option, RaftProperties properties) Choose a RaftStorage for the given storage directory name from the given configuration properties and then try to call RaftStorage.initialize().
static RaftStorageImpl	newRaftStorage(File dir, SizeInBytes freeSpaceMin, RaftStorage.StartupOption option, RaftServerConfigKeys.Log.CorruptionPolicy logCorruptionPolicy) Create a RaftStorageImpl.
static SnapshotManager	newSnapshotManager(RaftPeerId id, Supplier<RaftStorageDirectory> dir, StateMachineStorage smStorage)

从类继承的方法 java.lang.Object

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

方法详细资料

newSnapshotManager

public static SnapshotManager newSnapshotManager(RaftPeerId id,
                                                 Supplier<RaftStorageDirectory> dir,
                                                 StateMachineStorage smStorage)

newRaftStorage

public static RaftStorageImpl newRaftStorage(File dir,
                                             SizeInBytes freeSpaceMin,
                                             RaftStorage.StartupOption option,
                                             RaftServerConfigKeys.Log.CorruptionPolicy logCorruptionPolicy)

Create a RaftStorageImpl.

initRaftStorage

public static RaftStorageImpl initRaftStorage(String storageDirName,
                                              RaftStorage.StartupOption option,
                                              RaftProperties properties)
                                       throws IOException

Choose a RaftStorage for the given storage directory name from the given configuration properties and then try to call RaftStorage.initialize().

RaftStorage.StartupOption.FORMAT: - When there are more than one existing directories, throw an exception. - When there is an existing directory, throw an exception. - When there is no existing directory, try to initialize a new directory from the list specified in the configuration properties until a directory succeeded or all directories failed.

RaftStorage.StartupOption.RECOVER: - When there are more than one existing directories, throw an exception. - When there is an existing directory, if it fails to initialize, throw an exception but not try a new directory. - When there is no existing directory, if only one directory is specified in the configuration, format it; otherwise, there are >1 directories specified, throw an exception.

参数:

storageDirName - the storage directory name

option - the startup option

properties - the configuration properties

返回:

the chosen storage, which is initialized successfully.

抛出:

IOException