1 /*
2 * Copyright 2015 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package io.netty.channel.pool;
17
18 import io.netty.channel.Channel;
19 import io.netty.channel.EventLoop;
20 import io.netty.util.concurrent.Promise;
21
22 /**
23 * Handler which is called for various actions done by the {@link ChannelPool}.
24 */
25 public interface ChannelPoolHandler {
26 /**
27 * Called once a {@link Channel} was released by calling {@link ChannelPool#release(Channel)} or
28 * {@link ChannelPool#release(Channel, Promise)}.
29 *
30 * This method will be called by the {@link EventLoop} of the {@link Channel}.
31 */
32 void channelReleased(Channel ch) throws Exception;
33
34 /**
35 * Called once a {@link Channel} was acquired by calling {@link ChannelPool#acquire()} or
36 * {@link ChannelPool#acquire(Promise)}.
37 *
38 * This method will be called by the {@link EventLoop} of the {@link Channel}.
39 */
40 void channelAcquired(Channel ch) throws Exception;
41
42 /**
43 * Called once a new {@link Channel} is created in the {@link ChannelPool}.
44 *
45 * This method will be called by the {@link EventLoop} of the {@link Channel}.
46 */
47 void channelCreated(Channel ch) throws Exception;
48 }