| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the License. You may obtain a |
| * copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License |
| * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| * or implied. See the License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| |
| package org.apache.geode.internal.cache; |
| |
| import org.apache.geode.cache.CacheStatistics; |
| import org.apache.geode.cache.EntryDestroyedException; |
| import org.apache.geode.cache.StatisticsDisabledException; |
| import org.apache.geode.internal.InternalStatisticsDisabledException; |
| |
| class CacheStatisticsImpl implements CacheStatistics { |
| private final InternalRegion region; |
| private final RegionEntry regionEntry; |
| |
| CacheStatisticsImpl(RegionEntry regionEntry, InternalRegion region) { |
| this.region = region; |
| // entry stats are all on commited state so ok to ignore tx state |
| this.regionEntry = regionEntry; |
| } |
| |
| @Override |
| public long getHitCount() throws StatisticsDisabledException { |
| checkEntryDestroyed(); |
| try { |
| return this.regionEntry.getHitCount(); |
| } catch (InternalStatisticsDisabledException e) { |
| throw new StatisticsDisabledException(e); |
| } |
| } |
| |
| @Override |
| public float getHitRatio() throws StatisticsDisabledException { |
| checkEntryDestroyed(); |
| // Don't worry about write synchronizing. This is just a stat |
| // so its ok if the hit ratio is inaccurate because the hit count |
| // and miss count are sampled without a write lock. |
| RegionEntry entry = this.regionEntry; |
| try { |
| long hitCount = entry.getHitCount(); |
| long total = hitCount + entry.getMissCount(); |
| return total == 0L ? 0.0f : ((float) hitCount / total); |
| } catch (InternalStatisticsDisabledException e) { |
| throw new StatisticsDisabledException(e); |
| } |
| } |
| |
| @Override |
| public long getLastAccessedTime() throws StatisticsDisabledException { |
| checkEntryDestroyed(); |
| try { |
| return this.regionEntry.getLastAccessed(); |
| } catch (InternalStatisticsDisabledException e) { |
| throw new StatisticsDisabledException(e); |
| } |
| } |
| |
| @Override |
| public long getLastModifiedTime() { |
| checkEntryDestroyed(); |
| return this.regionEntry.getLastModified(); |
| } |
| |
| @Override |
| public long getMissCount() throws StatisticsDisabledException { |
| checkEntryDestroyed(); |
| try { |
| return this.regionEntry.getMissCount(); |
| } catch (InternalStatisticsDisabledException e) { |
| throw new StatisticsDisabledException(e); |
| } |
| } |
| |
| @Override |
| public void resetCounts() throws StatisticsDisabledException { |
| checkEntryDestroyed(); |
| try { |
| this.regionEntry.resetCounts(); |
| } catch (InternalStatisticsDisabledException e) { |
| throw new StatisticsDisabledException(e); |
| } |
| } |
| |
| /* |
| * throws CacheClosedException or EntryDestroyedException if this entry is destroyed. |
| */ |
| private void checkEntryDestroyed() { |
| this.region.getCancelCriterion().checkCancelInProgress(null); |
| if (this.regionEntry.isRemoved()) { |
| throw new EntryDestroyedException(this.regionEntry.getKey().toString()); |
| } |
| } |
| } |