1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/*
* ====================================================================
* 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package ch.boye.httpclientandroidlib.impl.conn;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.concurrent.TimeUnit;
import ch.boye.httpclientandroidlib.androidextra.HttpClientAndroidLog;
/* LogFactory removed by HttpClient for Android script. */
import ch.boye.httpclientandroidlib.HttpConnection;
// Currently only used by AbstractConnPool
/**
* A helper class for connection managers to track idle connections.
*
* <p>This class is not synchronized.</p>
*
* @see ch.boye.httpclientandroidlib.conn.ClientConnectionManager#closeIdleConnections
*
* @since 4.0
*
* @deprecated (4.1) no longer used
*/
@Deprecated
public class IdleConnectionHandler {
public HttpClientAndroidLog log = new HttpClientAndroidLog(getClass());
/** Holds connections and the time they were added. */
private final Map<HttpConnection,TimeValues> connectionToTimes;
public IdleConnectionHandler() {
super();
connectionToTimes = new HashMap<HttpConnection,TimeValues>();
}
/**
* Registers the given connection with this handler. The connection will be held until
* {@link #remove} or {@link #closeIdleConnections} is called.
*
* @param connection the connection to add
*
* @see #remove
*/
public void add(final HttpConnection connection, final long validDuration, final TimeUnit unit) {
final long timeAdded = System.currentTimeMillis();
if (log.isDebugEnabled()) {
log.debug("Adding connection at: " + timeAdded);
}
connectionToTimes.put(connection, new TimeValues(timeAdded, validDuration, unit));
}
/**
* Removes the given connection from the list of connections to be closed when idle.
* This will return true if the connection is still valid, and false
* if the connection should be considered expired and not used.
*
* @param connection
* @return True if the connection is still valid.
*/
public boolean remove(final HttpConnection connection) {
final TimeValues times = connectionToTimes.remove(connection);
if(times == null) {
log.warn("Removing a connection that never existed!");
return true;
} else {
return System.currentTimeMillis() <= times.timeExpires;
}
}
/**
* Removes all connections referenced by this handler.
*/
public void removeAll() {
this.connectionToTimes.clear();
}
/**
* Closes connections that have been idle for at least the given amount of time.
*
* @param idleTime the minimum idle time, in milliseconds, for connections to be closed
*/
public void closeIdleConnections(final long idleTime) {
// the latest time for which connections will be closed
final long idleTimeout = System.currentTimeMillis() - idleTime;
if (log.isDebugEnabled()) {
log.debug("Checking for connections, idle timeout: " + idleTimeout);
}
for (final Entry<HttpConnection, TimeValues> entry : connectionToTimes.entrySet()) {
final HttpConnection conn = entry.getKey();
final TimeValues times = entry.getValue();
final long connectionTime = times.timeAdded;
if (connectionTime <= idleTimeout) {
if (log.isDebugEnabled()) {
log.debug("Closing idle connection, connection time: " + connectionTime);
}
try {
conn.close();
} catch (final IOException ex) {
log.debug("I/O error closing connection", ex);
}
}
}
}
public void closeExpiredConnections() {
final long now = System.currentTimeMillis();
if (log.isDebugEnabled()) {
log.debug("Checking for expired connections, now: " + now);
}
for (final Entry<HttpConnection, TimeValues> entry : connectionToTimes.entrySet()) {
final HttpConnection conn = entry.getKey();
final TimeValues times = entry.getValue();
if(times.timeExpires <= now) {
if (log.isDebugEnabled()) {
log.debug("Closing connection, expired @: " + times.timeExpires);
}
try {
conn.close();
} catch (final IOException ex) {
log.debug("I/O error closing connection", ex);
}
}
}
}
private static class TimeValues {
private final long timeAdded;
private final long timeExpires;
/**
* @param now The current time in milliseconds
* @param validDuration The duration this connection is valid for
* @param validUnit The unit of time the duration is specified in.
*/
TimeValues(final long now, final long validDuration, final TimeUnit validUnit) {
this.timeAdded = now;
if(validDuration > 0) {
this.timeExpires = now + validUnit.toMillis(validDuration);
} else {
this.timeExpires = Long.MAX_VALUE;
}
}
}
}
|
