org.glassfish.jersey.server.internal.monitoring

Class ExecutionStatisticsImpl

java.lang.Object

org.glassfish.jersey.server.internal.monitoring.ExecutionStatisticsImpl

All Implemented Interfaces:

ExecutionStatistics

final class ExecutionStatisticsImpl
extends java.lang.Object
implements ExecutionStatistics

Immutable Execution statistics.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	ExecutionStatisticsImpl.Builder Builder of execution statistics.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static ExecutionStatistics	EMPTY Empty execution statistics instance.
private long	lastStartTime
private java.util.Map<java.lang.Long,TimeWindowStatistics>	timeWindowStatistics

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ExecutionStatisticsImpl(long lastStartTime, java.util.Map<java.lang.Long,TimeWindowStatistics> timeWindowStatistics)

Method Summary

Modifier and Type	Method and Description
java.util.Date	getLastStartTime() Return time when target was executed last time.
java.util.Map<java.lang.Long,TimeWindowStatistics>	getTimeWindowStatistics() Returns time window statistics for available time window sizes.
ExecutionStatistics	snapshot() Get the immutable consistent snapshot of the monitoring statistics.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY

static final ExecutionStatistics EMPTY

Empty execution statistics instance.

lastStartTime

private final long lastStartTime

timeWindowStatistics

private final java.util.Map<java.lang.Long,TimeWindowStatistics> timeWindowStatistics

Constructor Detail

ExecutionStatisticsImpl

private ExecutionStatisticsImpl(long lastStartTime,
                                java.util.Map<java.lang.Long,TimeWindowStatistics> timeWindowStatistics)

Method Detail

getLastStartTime

public java.util.Date getLastStartTime()

Description copied from interface: ExecutionStatistics

Return time when target was executed last time. The time is measured before the target was executed.

Specified by:

getLastStartTime in interface ExecutionStatistics

Returns:

Time of last execution.

getTimeWindowStatistics

public java.util.Map<java.lang.Long,TimeWindowStatistics> getTimeWindowStatistics()

Description copied from interface: ExecutionStatistics

Returns time window statistics for available time window sizes. The returned map contains sizes of a time window in milliseconds as keys and time window statistics for the corresponding time window as value.

Specified by:

getTimeWindowStatistics in interface ExecutionStatistics

Returns:

Map with size of a time window in milliseconds as keys and time window statistics for the corresponding time window as value.

snapshot

public ExecutionStatistics snapshot()

Description copied from interface: ExecutionStatistics

Get the immutable consistent snapshot of the monitoring statistics. Working with snapshots might have negative performance impact as snapshot must be created but ensures consistency of data over time. However, the usage of snapshot is encouraged to avoid working with inconsistent data. Not all statistics must be updated in the same time on mutable version of statistics.

Specified by:

snapshot in interface ExecutionStatistics

Returns:

Snapshot of execution statistics.