package org.infinispan.container.entries.metadata;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Set;
import org.infinispan.commons.io.UnsignedNumeric;
import org.infinispan.commons.marshall.AbstractExternalizer;
import org.infinispan.commons.util.Util;
import org.infinispan.container.entries.AbstractInternalCacheEntry;
import org.infinispan.container.entries.ExpiryHelper;
import org.infinispan.container.entries.InternalCacheValue;
import org.infinispan.marshall.core.Ids;
import org.infinispan.metadata.Metadata;
/**
* A cache entry that is transient, i.e., it can be considered expired after
* a period of not being used, and {@link org.infinispan.container.entries.metadata.MetadataAware}
*
* @author Galder ZamarreƱo
* @since 5.3
*/
public class MetadataTransientCacheEntry extends AbstractInternalCacheEntry implements MetadataAware {
protected Object value;
protected Metadata metadata;
protected long lastUsed;
public MetadataTransientCacheEntry(Object key, Object value, Metadata metadata, long lastUsed) {
super(key);
this.value = value;
this.metadata = metadata;
this.lastUsed = lastUsed;
}
@Override
public Object getValue() {
return value;
}
@Override
public Object setValue(Object value) {
return this.value = value;
}
@Override
public final void touch() {
touch(System.currentTimeMillis());
}
@Override
public final void touch(long currentTimeMillis) {
lastUsed = currentTimeMillis;
}
@Override
public final void reincarnate() {
// no-op
}
@Override
public void reincarnate(long now) {
//no-op
}
@Override
public final boolean canExpire() {
return true;
}
@Override
public boolean isExpired(long now) {
return ExpiryHelper.isExpiredTransient(metadata.maxIdle(), lastUsed, now);
}
@Override
public boolean isExpired() {
return isExpired(System.currentTimeMillis());
}
@Override
public long getCreated() {
return -1;
}
@Override
public final long getLastUsed() {
return lastUsed;
}
@Override
public long getLifespan() {
return -1;
}
@Override
public long getExpiryTime() {
long maxIdle = metadata.maxIdle();
return maxIdle > -1 ? lastUsed + maxIdle : -1;
}
@Override
public final long getMaxIdle() {
return metadata.maxIdle();
}
@Override
public InternalCacheValue toInternalCacheValue() {
return new MetadataTransientCacheValue(value, metadata, lastUsed);
}
@Override
public Metadata getMetadata() {
return metadata;
}
@Override
public void setMetadata(Metadata metadata) {
this.metadata = metadata;
}
public static class Externalizer extends AbstractExternalizer<MetadataTransientCacheEntry> {
@Override
public void writeObject(ObjectOutput output, MetadataTransientCacheEntry ice) throws IOException {
output.writeObject(ice.key);
output.writeObject(ice.value);
output.writeObject(ice.metadata);
UnsignedNumeric.writeUnsignedLong(output, ice.lastUsed);
}
@Override
public MetadataTransientCacheEntry readObject(ObjectInput input) throws IOException, ClassNotFoundException {
Object k = input.readObject();
Object v = input.readObject();
Metadata metadata = (Metadata) input.readObject();
long lastUsed = UnsignedNumeric.readUnsignedLong(input);
return new MetadataTransientCacheEntry(k, v, metadata, lastUsed);
}
@Override
public Integer getId() {
return Ids.METADATA_TRANSIENT_ENTRY;
}
@Override
public Set<Class<? extends MetadataTransientCacheEntry>> getTypeClasses() {
return Util.asSet(MetadataTransientCacheEntry.class);
}
}
}