org.apache.cassandra.net.WriteCallbackInfo Maven / Gradle / Ivy
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package org.apache.cassandra.net;
import java.net.InetAddress;
import org.apache.cassandra.db.ConsistencyLevel;
import org.apache.cassandra.db.Mutation;
import org.apache.cassandra.io.IVersionedSerializer;
import org.apache.cassandra.service.StorageProxy;
import org.apache.cassandra.service.paxos.Commit;
import org.apache.cassandra.utils.FBUtilities;
public class WriteCallbackInfo extends CallbackInfo
{
// either a Mutation, or a Paxos Commit (MessageOut)
private final Object mutation;
public WriteCallbackInfo(InetAddress target,
IAsyncCallback callback,
MessageOut message,
IVersionedSerializer serializer,
ConsistencyLevel consistencyLevel,
boolean allowHints)
{
super(target, callback, serializer, true);
assert message != null;
this.mutation = shouldHint(allowHints, message, consistencyLevel);
//Local writes shouldn't go through messaging service (https://issues.apache.org/jira/browse/CASSANDRA-10477)
assert (!target.equals(FBUtilities.getBroadcastAddress()));
}
public boolean shouldHint()
{
return mutation != null && StorageProxy.shouldHint(target);
}
public Mutation mutation()
{
return getMutation(mutation);
}
private static Mutation getMutation(Object object)
{
assert object instanceof Commit || object instanceof Mutation : object;
return object instanceof Commit ? ((Commit) object).makeMutation()
: (Mutation) object;
}
private static Object shouldHint(boolean allowHints, MessageOut sentMessage, ConsistencyLevel consistencyLevel)
{
return allowHints
&& sentMessage.verb != MessagingService.Verb.COUNTER_MUTATION
&& consistencyLevel != ConsistencyLevel.ANY
? sentMessage.payload : null;
}
}