net.openhft.chronicle.queue.impl.single

Class SingleChronicleQueueStore

java.lang.Object

net.openhft.chronicle.queue.impl.single.SingleChronicleQueueStore

All Implemented Interfaces:

Closeable, AutoCloseable, net.openhft.chronicle.core.ReferenceCounted, WireStore, net.openhft.chronicle.wire.Demarshallable, net.openhft.chronicle.wire.WriteMarshallable, net.openhft.chronicle.wire.WriteValue

public class SingleChronicleQueueStore
extends Object
implements WireStore

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SingleChronicleQueueStore.IndexOffset

Field Summary

Fields

Modifier and Type	Field and Description
static net.openhft.chronicle.wire.WriteMarshallable	INDEX_TEMPLATE

Fields inherited from interface net.openhft.chronicle.wire.Demarshallable

DEMARSHALLABLES

Fields inherited from interface net.openhft.chronicle.wire.WriteMarshallable

EMPTY

Method Summary

Modifier and Type	Method and Description
boolean	appendRollMeta(net.openhft.chronicle.wire.Wire wire, long cycle)
long	cycle()
long	epoch()
long	firstSequenceNumber()
net.openhft.chronicle.bytes.MappedBytes	mappedBytes()
long	moveToIndex(net.openhft.chronicle.wire.Wire wire, long index) Moves the position to the index
long	refCount()
void	release()
void	reserve()
long	sequenceNumber()
void	storeIndexLocation(net.openhft.chronicle.wire.Wire wire, long position, long sequenceNumber)
void	writeMarshallable(net.openhft.chronicle.wire.WireOut wire)
long	writePosition()
WireStore	writePosition(long position)

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.openhft.chronicle.core.ReferenceCounted

close, release, releaseAll, tryReserve

Methods inherited from interface net.openhft.chronicle.core.io.Closeable

closeQuietly, notifyClosing

Methods inherited from interface net.openhft.chronicle.wire.Demarshallable

newInstance

Methods inherited from interface net.openhft.chronicle.wire.WriteMarshallable

writeValue

Field Detail

INDEX_TEMPLATE

public static final net.openhft.chronicle.wire.WriteMarshallable INDEX_TEMPLATE

Method Detail

writePosition

public long writePosition()

Specified by:

writePosition in interface WireStore

Returns:

the next writable position

writePosition

public WireStore writePosition(long position)

Specified by:

writePosition in interface WireStore

cycle

public long cycle()

Specified by:

cycle in interface WireStore

Returns:

the file identifier based on the high 24bits of the index, when DAY ROLLING each day will have a unique cycle

epoch

public long epoch()

Specified by:

epoch in interface WireStore

Returns:

an epoch offset as the number of number of milliseconds since January 1, 1970, 00:00:00 GMT

firstSequenceNumber

public long firstSequenceNumber()

Specified by:

firstSequenceNumber in interface WireStore

Returns:

the first index available on the file system

sequenceNumber

public long sequenceNumber()

Specified by:

sequenceNumber in interface WireStore

Returns:

the last index available on the file system

appendRollMeta

public boolean appendRollMeta(@NotNull
                              net.openhft.chronicle.wire.Wire wire,
                              long cycle)

Specified by:

appendRollMeta in interface WireStore

moveToIndex

public long moveToIndex(@NotNull
                        net.openhft.chronicle.wire.Wire wire,
                        long index)

Moves the position to the index

Specified by:

moveToIndex in interface WireStore

Parameters:

wire - the data structure we are navigating

index - the index we wish to move to

Returns:

the position of the targetIndex or -1 if the index can not be found

reserve

public void reserve()
             throws IllegalStateException

Specified by:

reserve in interface net.openhft.chronicle.core.ReferenceCounted

Throws:

IllegalStateException

release

public void release()
             throws IllegalStateException

Specified by:

release in interface net.openhft.chronicle.core.ReferenceCounted

Throws:

IllegalStateException

refCount

public long refCount()

Specified by:

refCount in interface net.openhft.chronicle.core.ReferenceCounted

mappedBytes

@NotNull
public net.openhft.chronicle.bytes.MappedBytes mappedBytes()

Specified by:

mappedBytes in interface WireStore

Returns:

creates a new instance of mapped bytes, because, for example the tailer and appender can be at different locations.

storeIndexLocation

public void storeIndexLocation(@NotNull
                               net.openhft.chronicle.wire.Wire wire,
                               long position,
                               long sequenceNumber)

Specified by:

storeIndexLocation in interface WireStore

writeMarshallable

public void writeMarshallable(@NotNull
                              net.openhft.chronicle.wire.WireOut wire)

Specified by:

writeMarshallable in interface net.openhft.chronicle.wire.WriteMarshallable