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/*******************************************************************************
* Copyright (c) 2016 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.ats.core.config;
import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import java.util.concurrent.TimeUnit;
import org.eclipse.osee.ats.api.AtsApi;
import org.eclipse.osee.ats.api.IAtsObject;
import org.eclipse.osee.ats.api.config.IAtsCache;
import org.eclipse.osee.ats.core.util.AtsObjects;
import org.eclipse.osee.framework.core.data.ArtifactId;
import org.eclipse.osee.framework.core.data.ArtifactToken;
import org.eclipse.osee.framework.jdk.core.util.Conditions;
/**
* Provide ATS Caching by id, guid and application tags. These are evacuating caches that will expire 15 minutes after
* being cached.
*
* @author Donald G. Dunne
*/
public class AtsCache implements IAtsCache {
private final AtsApi atsApi;
private final LoadingCache<Long, IAtsObject> idToAtsObjectCache;
public AtsCache(AtsApi atsApi) {
this.atsApi = atsApi;
idToAtsObjectCache = CacheBuilder.newBuilder() //
.expireAfterWrite(15, TimeUnit.MINUTES) //
.build(idToAtsObjectCacheLoader);
}
@Override
@SuppressWarnings("unchecked")
public <T extends IAtsObject> T getAtsObject(Long id) {
Conditions.checkNotNull(id, "id");
try {
return (T) idToAtsObjectCache.get(id);
} catch (Exception ex) {
return null;
}
}
@Override
public <T extends IAtsObject> T getAtsObject(ArtifactId artifact) {
return getAtsObject(artifact.getId());
}
@Override
public void cacheAtsObject(IAtsObject atsObject) {
Conditions.checkNotNull(atsObject, "atsObject");
idToAtsObjectCache.put(atsObject.getId(), atsObject);
}
private final CacheLoader<Long, IAtsObject> idToAtsObjectCacheLoader = new CacheLoader<Long, IAtsObject>() {
@Override
public IAtsObject load(Long id) {
ArtifactToken artifact = atsApi.getQueryService().getArtifact(id);
return AtsObjects.getConfigObject(artifact, atsApi);
}
};
@Override
public void invalidate() {
idToAtsObjectCache.invalidateAll();
}
@Override
public void deCacheAtsObject(IAtsObject atsObject) {
Conditions.checkNotNull(atsObject, "atsObject");
idToAtsObjectCache.invalidate(atsObject.getId());
}
}
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