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org.infinispan.commands.write.InvalidateL1Command Maven / Gradle / Ivy
package org.infinispan.commands.write;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import org.infinispan.commands.CommandInvocationId;
import org.infinispan.commands.Visitor;
import org.infinispan.container.DataContainer;
import org.infinispan.container.entries.InternalCacheEntry;
import org.infinispan.container.entries.MVCCEntry;
import org.infinispan.context.InvocationContext;
import org.infinispan.distribution.DistributionManager;
import org.infinispan.notifications.cachelistener.CacheNotifier;
import org.infinispan.remoting.transport.Address;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
/**
* Invalidates an entry in a L1 cache (used with DIST mode)
*
* @author Manik Surtani
* @author [email protected]
* @since 4.0
*/
public class InvalidateL1Command extends InvalidateCommand {
public static final int COMMAND_ID = 7;
private static final Log log = LogFactory.getLog(InvalidateL1Command.class);
private DistributionManager dm;
private DataContainer dataContainer;
private Address writeOrigin;
public InvalidateL1Command() {
writeOrigin = null;
}
public InvalidateL1Command(DataContainer dc, DistributionManager dm, CacheNotifier notifier, long flagsBitSet,
CommandInvocationId commandInvocationId, Object... keys) {
super(notifier, flagsBitSet, commandInvocationId, keys);
writeOrigin = null;
this.dm = dm;
this.dataContainer = dc;
}
public InvalidateL1Command(DataContainer dc, DistributionManager dm, CacheNotifier notifier, long flagsBitSet,
Collection keys, CommandInvocationId commandInvocationId) {
this(null, dc, dm, notifier, flagsBitSet, keys, commandInvocationId);
}
public InvalidateL1Command(Address writeOrigin, DataContainer dc, DistributionManager dm, CacheNotifier notifier,
long flagsBitSet, Collection keys, CommandInvocationId commandInvocationId) {
super(notifier, flagsBitSet, keys, commandInvocationId);
this.writeOrigin = writeOrigin;
this.dm = dm;
this.dataContainer = dc;
}
@Override
public byte getCommandId() {
return COMMAND_ID;
}
public void init( DistributionManager dm, CacheNotifier n, DataContainer dc) {
super.init(n);
this.dm = dm;
this.dataContainer = dc;
}
@Override
public Object perform(InvocationContext ctx) throws Throwable {
final boolean trace = log.isTraceEnabled();
if (trace) log.tracef("Preparing to invalidate keys %s", Arrays.asList(keys));
for (Object k : getKeys()) {
InternalCacheEntry ice = dataContainer.get(k);
if (ice != null) {
boolean isLocal = dm.getCacheTopology().isWriteOwner(k);
if (!isLocal) {
if (trace) log.tracef("Invalidating key %s.", k);
MVCCEntry e = (MVCCEntry) ctx.lookupEntry(k);
notify(ctx, e, true);
e.setRemoved(true);
e.setChanged(true);
e.setCreated(false);
e.setValid(false);
} else {
log.tracef("Not invalidating key %s as it is local now", k);
}
}
}
return null;
}
public void setKeys(Object[] keys) {
this.keys = keys;
}
@Override
public Collection getKeysToLock() {
//no keys to lock
return Collections.emptyList();
}
@Override
public void writeTo(ObjectOutput output) throws IOException {
super.writeTo(output); //command invocation id + keys
output.writeObject(writeOrigin);
}
@Override
public void readFrom(ObjectInput input) throws IOException, ClassNotFoundException {
super.readFrom(input);
writeOrigin = (Address) input.readObject();
}
@Override
public Object acceptVisitor(InvocationContext ctx, Visitor visitor) throws Throwable {
return visitor.visitInvalidateL1Command(ctx, this);
}
@Override
public String toString() {
return getClass().getSimpleName() + "{" +
"num keys=" + (keys == null ? 0 : keys.length) +
", origin=" + writeOrigin +
'}';
}
/**
* Returns true if the write that caused the invalidation was performed on this node.
* More formal, if a put(k) happens on node A and ch(A)={B}, then an invalidation message
* might be multicasted by B to all cluster members including A. This method returns true
* if and only if the node where it is invoked is A.
*/
public boolean isCausedByALocalWrite(Address address) {
return writeOrigin != null && writeOrigin.equals(address);
}
}
