package org.ehcache.management.providers.statistics;
import org.ehcache.Cache;
import org.ehcache.core.spi.service.StatisticsService;
import org.ehcache.core.spi.time.TimeSource;
import org.ehcache.core.statistics.CacheOperationOutcomes;
import org.ehcache.core.statistics.LatencyHistogramConfiguration;
import org.ehcache.management.ManagementRegistryServiceConfiguration;
import org.ehcache.management.providers.CacheBinding;
import org.ehcache.management.providers.ExposedCacheBinding;
import org.terracotta.management.model.capabilities.descriptors.StatisticDescriptor;
import org.terracotta.management.model.stats.Statistic;
import java.io.Serializable;
import java.util.Collection;
import java.util.Map;
public class StandardEhcacheStatistics extends ExposedCacheBinding {
private final String cacheAlias;
private final StatisticsService statisticsService;
StandardEhcacheStatistics(ManagementRegistryServiceConfiguration registryConfiguration, CacheBinding cacheBinding, StatisticsService statisticsService, TimeSource timeSource) {
super(registryConfiguration, cacheBinding);
this.cacheAlias = cacheBinding.getAlias();
this.statisticsService = statisticsService;
statisticsService.createCacheRegistry(this.cacheAlias, cacheBinding.getCache(), timeSource::getTimeMillis);
statisticsService.registerCacheStatistics(this.cacheAlias);
LatencyHistogramConfiguration latencyHistogramConfiguration = registryConfiguration.getLatencyHistogramConfiguration();
registerDerivedStatistics(cacheBinding.getCache(), "get", CacheOperationOutcomes.GetOutcome.HIT, "Cache:GetHitLatency", latencyHistogramConfiguration);
registerDerivedStatistics(cacheBinding.getCache(),"get", CacheOperationOutcomes.GetOutcome.MISS, "Cache:GetMissLatency", latencyHistogramConfiguration);
registerDerivedStatistics(cacheBinding.getCache(),"put", CacheOperationOutcomes.PutOutcome.PUT, "Cache:PutLatency", latencyHistogramConfiguration);
registerDerivedStatistics(cacheBinding.getCache(),"remove", CacheOperationOutcomes.RemoveOutcome.SUCCESS, "Cache:RemoveLatency", latencyHistogramConfiguration);
}
private <T extends Enum<T>, K, V> void registerDerivedStatistics(Cache<K, V> cache, String statName, T outcome, String derivedName, LatencyHistogramConfiguration configuration) {
this.statisticsService.registerDerivedStatistics(this.cacheAlias, cache , statName, outcome, derivedName, configuration);
}
@Override
public Collection<StatisticDescriptor> getDescriptors() {
return statisticsService.getCacheDescriptors(cacheAlias);
}
Map<String, Statistic<? extends Serializable>> collectStatistics(Collection<String> statisticNames, long since) {
return this.statisticsService.collectStatistics(this.cacheAlias, statisticNames, since);
}
}