package org.infinispan.interceptors;
import org.infinispan.commands.FlagAffectedCommand;
import org.infinispan.commands.write.PutMapCommand;
import org.infinispan.configuration.cache.Configuration;
import org.infinispan.configuration.cache.EvictionConfiguration;
import org.infinispan.container.entries.CacheEntry;
import org.infinispan.context.InvocationContext;
import org.infinispan.eviction.ActivationManager;
import org.infinispan.eviction.EvictionStrategy;
import org.infinispan.factories.annotations.Inject;
import org.infinispan.factories.annotations.Start;
import org.infinispan.interceptors.locking.ClusteringDependentLogic;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
import java.util.Arrays;
public class ActivationInterceptor extends CacheLoaderInterceptor {
private static final Log log = LogFactory.getLog(ActivationInterceptor.class);
private Configuration cfg;
private boolean isManualEviction;
private ActivationManager activationManager;
private ClusteringDependentLogic cdl;
@Override
protected Log getLog() {
return log;
}
@Inject
public void inject(Configuration cfg, ActivationManager activationManager, ClusteringDependentLogic cdl) {
this.cfg = cfg;
this.activationManager = activationManager;
this.cdl = cdl;
}
@Start(priority = 15)
@SuppressWarnings("unused")
public void start() {
// Treat caches configured with manual eviction differently.
// These caches require activation at the interceptor level.
EvictionConfiguration evictCfg = cfg.eviction();
isManualEviction = evictCfg.strategy() == EvictionStrategy.NONE
|| evictCfg.maxEntries() < 0;
}
@Override
public Object visitPutMapCommand(InvocationContext ctx, PutMapCommand command) throws Throwable {
// Load the keys for our map into the data container that we are using removing them from the store.
// This way when we overwrite the values on commit they won't be in loader and if we rollback they won't be
// in the loader either but will be in data container at least
for (Object key : command.getAffectedKeys()) {
loadIfNeeded(ctx, key, false, command);
}
Object retval = super.visitPutMapCommand(ctx, command);
return retval;
}
@Override
protected Boolean loadIfNeeded(InvocationContext ctx, Object key, boolean isRetrieval, FlagAffectedCommand cmd) throws Throwable {
Boolean loaded = super.loadIfNeeded(ctx, key, isRetrieval, cmd);
if (loaded == Boolean.TRUE) {
if (enabled && isManualEviction) {
// check if value was loaded
CacheEntry e = ctx.lookupEntry(key);
// We have to commit this before we remove from the store so there isn't a gap where the entry isn't visible
// This should always be true given that loaded was true, but just sanity check
if (e != null && e.isLoaded()) {
cdl.commitEntry(e, null, cmd, ctx);
removeFromStoreIfNeeded(key);
}
}
}
return loaded;
}
@Override
protected void sendNotification(Object key, Object value, boolean pre,
InvocationContext ctx, FlagAffectedCommand cmd) {
super.sendNotification(key, value, pre, ctx, cmd);
notifier.notifyCacheEntryActivated(key, value, pre, ctx, cmd);
}
private void removeFromStoreIfNeeded(Object... keys) {
if (enabled && isManualEviction) {
if (log.isTraceEnabled())
log.tracef("Remove from store keys=%s, if needed", Arrays.toString(keys));
for (Object key: keys)
activationManager.activate(key);
}
}
}