1 /***
2 *
3 * Copyright 2004 Hiram Chirino
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.activeio.filter;
18
19 import java.io.IOException;
20
21 import org.activeio.AsynchChannel;
22 import org.activeio.FilterAsynchChannel;
23 import org.activeio.Packet;
24
25
26 /***
27 * A CounterAsyncChannel is a simple {@see org.activeio.AsynchChannelFilter}
28 * that counts the number bytes that been sent down and up through the channel.
29 *
30 * The {@see org.activeio.counter.CounterAttribueEnum.COUNTER_INBOUND_COUNT}
31 * and {@see org.activeio.counter.CounterAttribueEnum.COUNTER_OUTBOUND_COUNT}
32 * attributes can be used to find query the channel to get the current inbound and outbound
33 * byte counts.
34 *
35 * @version $Revision$
36 */
37 final public class CounterAsyncChannel extends FilterAsynchChannel {
38
39 long inBoundCounter = 0;
40
41 long outBoundCounter = 0;
42
43 /***
44 * @param next
45 */
46 public CounterAsyncChannel(AsynchChannel next) {
47 super(next);
48 }
49
50 /***
51 * @see org.activeio.FilterAsynchChannel#onPacket(org.activeio.channel.Packet)
52 */
53 public void onPacket(Packet packet) {
54 inBoundCounter += packet.remaining();
55 super.onPacket(packet);
56 }
57
58 /***
59 * @see org.activeio.FilterAsynchChannel#write(org.activeio.channel.Packet)
60 */
61 public void write(Packet packet) throws IOException {
62 outBoundCounter += packet.position();
63 super.write(packet);
64 }
65
66 public long getInBoundCounter() {
67 return inBoundCounter;
68 }
69
70 public long getOutBoundCounter() {
71 return outBoundCounter;
72 }
73 }