| /* |
| * |
| * 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.proton.examples; |
| |
| import org.apache.qpid.proton.engine.BaseHandler; |
| import org.apache.qpid.proton.engine.Delivery; |
| import org.apache.qpid.proton.engine.Event; |
| import org.apache.qpid.proton.engine.Link; |
| import org.apache.qpid.proton.engine.Receiver; |
| |
| /** |
| * FlowController |
| * |
| */ |
| |
| public class FlowController extends BaseHandler |
| { |
| |
| final private int window; |
| |
| public FlowController(int window) { |
| this.window = window; |
| } |
| |
| private void topUp(Receiver rcv) { |
| int delta = window - rcv.getCredit(); |
| rcv.flow(delta); |
| } |
| |
| @Override |
| public void onLinkLocalOpen(Event evt) { |
| Link link = evt.getLink(); |
| if (link instanceof Receiver) { |
| topUp((Receiver) link); |
| } |
| } |
| |
| @Override |
| public void onLinkRemoteOpen(Event evt) { |
| Link link = evt.getLink(); |
| if (link instanceof Receiver) { |
| topUp((Receiver) link); |
| } |
| } |
| |
| @Override |
| public void onLinkFlow(Event evt) { |
| Link link = evt.getLink(); |
| if (link instanceof Receiver) { |
| topUp((Receiver) link); |
| } |
| } |
| |
| @Override |
| public void onDelivery(Event evt) { |
| Link link = evt.getLink(); |
| if (link instanceof Receiver) { |
| topUp((Receiver) link); |
| } |
| } |
| |
| } |