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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.qpid.server.subscription;
import org.apache.qpid.AMQException;
import org.apache.qpid.server.message.ServerMessage;
import org.apache.qpid.server.protocol.AMQSessionModel;
import org.apache.qpid.server.queue.QueueEntry;
import org.apache.qpid.server.util.StateChangeListener;
public interface SubscriptionTarget
{
enum State
{
ACTIVE, SUSPENDED, CLOSED
}
State getState();
void subscriptionRegistered(Subscription sub);
void subscriptionRemoved(Subscription sub);
void setStateListener(StateChangeListener<SubscriptionTarget, State> listener);
long getUnacknowledgedBytes();
long getUnacknowledgedMessages();
AMQSessionModel getSessionModel();
void send(QueueEntry entry, boolean batch) throws AMQException;
void flushBatched();
void queueDeleted();
void queueEmpty() throws AMQException;
boolean allocateCredit(ServerMessage msg);
void restoreCredit(ServerMessage queueEntry);
boolean isSuspended();
boolean close();
}
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