org.apache.ambari.server.controller.metrics.timeline.cache

Class TimelineMetricCacheProvider

java.lang.Object

org.apache.ambari.server.controller.metrics.timeline.cache.TimelineMetricCacheProvider

public class TimelineMetricCacheProvider
extends Object

Cache implementation that provides ability to perform incremental reads from Metrics backend and reduce the amount of calls between Ambari and the Metrics backend.

Field Summary

Fields

Modifier and Type	Field and Description
static String	TIMELINE_METRIC_CACHE_INSTANCE_NAME
static String	TIMELINE_METRIC_CACHE_MANAGER_NAME

Constructor Summary

Constructors

Constructor and Description
TimelineMetricCacheProvider(Configuration configuration, TimelineMetricCacheEntryFactory cacheEntryFactory)

Method Summary

Modifier and Type	Method and Description
net.sf.ehcache.config.CacheConfiguration	createCacheConfiguration()
TimelineMetricCache	getTimelineMetricsCache() Return an instance of a Ehcache

Methods inherited from class java.lang.Object

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

Field Detail

TIMELINE_METRIC_CACHE_MANAGER_NAME

public static final String TIMELINE_METRIC_CACHE_MANAGER_NAME

See Also:

Constant Field Values

TIMELINE_METRIC_CACHE_INSTANCE_NAME

public static final String TIMELINE_METRIC_CACHE_INSTANCE_NAME

See Also:

Constant Field Values

Constructor Detail

TimelineMetricCacheProvider

@Inject
public TimelineMetricCacheProvider(Configuration configuration,
                                           TimelineMetricCacheEntryFactory cacheEntryFactory)

Method Detail

createCacheConfiguration

public net.sf.ehcache.config.CacheConfiguration createCacheConfiguration()

getTimelineMetricsCache

public TimelineMetricCache getTimelineMetricsCache()

Return an instance of a Ehcache

Returns:

@TimelineMetricCache or null if caching is disabled through config.