org.apache.ratis.server.raftlog.memory

Class MemoryRaftLog

java.lang.Object

org.apache.ratis.server.raftlog.RaftLogBase

org.apache.ratis.server.raftlog.memory.MemoryRaftLog

All Implemented Interfaces:

Closeable, AutoCloseable, RaftLog

public class MemoryRaftLog
extends RaftLogBase

A simple RaftLog implementation in memory. Used only for testing.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RaftLogSequentialOps.Runner

Nested classes/interfaces inherited from interface org.apache.ratis.server.raftlog.RaftLog

RaftLog.EntryWithData

Field Summary

Fields inherited from class org.apache.ratis.server.raftlog.RaftLogBase

INVALID_LOG_INDEX, LEAST_VALID_LOG_INDEX

Fields inherited from interface org.apache.ratis.server.raftlog.RaftLog

LOG

Constructor Summary

Constructors

Constructor and Description
MemoryRaftLog(RaftGroupMemberId memberId, LongSupplier commitIndexSupplier, RaftProperties properties)

Method Summary

Modifier and Type	Method and Description
protected CompletableFuture<Long>	appendEntryImpl(org.apache.ratis.proto.RaftProtos.LogEntryProto entry)
List<CompletableFuture<Long>>	appendImpl(org.apache.ratis.proto.RaftProtos.LogEntryProto... logEntryProtos)
void	close()
org.apache.ratis.proto.RaftProtos.LogEntryProto	get(long index)
LogEntryHeader[]	getEntries(long startIndex, long endIndex)
String	getEntryString()
RaftLog.EntryWithData	getEntryWithData(long index)
long	getFlushIndex()
TermIndex	getLastEntryTermIndex()
RaftLogMetricsBase	getRaftLogMetrics()
long	getStartIndex()
TermIndex	getTermIndex(long index)
RaftStorageMetadata	loadMetadata()
CompletableFuture<Long>	onSnapshotInstalled(long lastSnapshotIndex)
void	persistMetadata(RaftStorageMetadata newMetadata)
protected CompletableFuture<Long>	purgeImpl(long index)
protected CompletableFuture<Long>	truncateImpl(long index)

Methods inherited from class org.apache.ratis.server.raftlog.RaftLogBase

append, append, append, appendEntry, appendMetadata, checkLogState, getLastCommittedIndex, getName, getSnapshotIndex, hasReadLock, hasWriteLock, isOpened, newEntryWithData, open, openImpl, purge, readLock, toLogEntryString, toString, truncate, updateCommitIndex, updateSnapshotIndex, updateSnapshotIndexFromStateMachine, validateLogEntry, writeLock

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.ratis.server.raftlog.RaftLog

contains, getNextIndex

Constructor Detail

MemoryRaftLog

public MemoryRaftLog(RaftGroupMemberId memberId,
                     LongSupplier commitIndexSupplier,
                     RaftProperties properties)

Method Detail

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class RaftLogBase

Throws:

IOException

getRaftLogMetrics

public RaftLogMetricsBase getRaftLogMetrics()

get

public org.apache.ratis.proto.RaftProtos.LogEntryProto get(long index)

getEntryWithData

public RaftLog.EntryWithData getEntryWithData(long index)

getTermIndex

public TermIndex getTermIndex(long index)

getEntries

public LogEntryHeader[] getEntries(long startIndex,
                                   long endIndex)

truncateImpl

protected CompletableFuture<Long> truncateImpl(long index)

Specified by:

truncateImpl in class RaftLogBase

purgeImpl

protected CompletableFuture<Long> purgeImpl(long index)

Specified by:

purgeImpl in class RaftLogBase

getLastEntryTermIndex

public TermIndex getLastEntryTermIndex()

appendEntryImpl

protected CompletableFuture<Long> appendEntryImpl(org.apache.ratis.proto.RaftProtos.LogEntryProto entry)

Specified by:

appendEntryImpl in class RaftLogBase

getStartIndex

public long getStartIndex()

appendImpl

public List<CompletableFuture<Long>> appendImpl(org.apache.ratis.proto.RaftProtos.LogEntryProto... logEntryProtos)

Specified by:

appendImpl in class RaftLogBase

getEntryString

public String getEntryString()

getFlushIndex

public long getFlushIndex()

persistMetadata

public void persistMetadata(RaftStorageMetadata newMetadata)

loadMetadata

public RaftStorageMetadata loadMetadata()

onSnapshotInstalled

public CompletableFuture<Long> onSnapshotInstalled(long lastSnapshotIndex)