me.ahoo.cosid.segment

Interface IdSegment

All Superinterfaces:

java.lang.Comparable<IdSegment>

All Known Implementing Classes:

DefaultIdSegment, IdSegmentChain, MergedIdSegment

@ThreadSafe
public interface IdSegment
extends java.lang.Comparable<IdSegment>

Id Segment.

Field Summary

Fields

Modifier and Type	Field and Description
static long	SEQUENCE_OVERFLOW
static long	TIME_TO_LIVE_FOREVER

Method Summary

Modifier and Type	Method and Description
default int	compareTo(IdSegment other)
default void	ensureNextIdSegment(IdSegment nextIdSegment)
long	getFetchTime() ID segment fetch time.
long	getMaxId()
long	getOffset()
long	getSequence()
long	getStep()
default long	getTtl() the id segment time to live.
long	incrementAndGet()
default boolean	isAvailable() not expired and not overflow.
default boolean	isExpired() id segment has expired?.
default boolean	isOverflow()
default boolean	isOverflow(long nextSeq)

Field Detail

SEQUENCE_OVERFLOW

static final long SEQUENCE_OVERFLOW

See Also:

Constant Field Values

TIME_TO_LIVE_FOREVER

static final long TIME_TO_LIVE_FOREVER

See Also:

Constant Field Values

Method Detail

getFetchTime

long getFetchTime()

ID segment fetch time. unit TimeUnit.SECONDS

Returns:

fetch time

getMaxId

long getMaxId()

getOffset

long getOffset()

getSequence

long getSequence()

getStep

long getStep()

getTtl

default long getTtl()

the id segment time to live. unit TimeUnit.SECONDS

Returns:

time to live

isExpired

default boolean isExpired()

id segment has expired?.

Returns:

expired?

isOverflow

default boolean isOverflow()

isOverflow

default boolean isOverflow(long nextSeq)

isAvailable

default boolean isAvailable()

not expired and not overflow.

Returns:

true when not expired and not overflow

incrementAndGet

long incrementAndGet()

compareTo

default int compareTo(IdSegment other)

Specified by:

compareTo in interface java.lang.Comparable<IdSegment>

ensureNextIdSegment

default void ensureNextIdSegment(IdSegment nextIdSegment)
                          throws NextIdSegmentExpiredException

Throws:

NextIdSegmentExpiredException