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
|
/*
* Copyright 2014-2015 Open Networking Laboratory
*
* Licensed 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.onosproject.cli.net;
import org.apache.karaf.shell.commands.Argument;
import org.apache.karaf.shell.commands.Command;
import org.apache.karaf.shell.commands.Option;
import org.onosproject.cli.AbstractShellCommand;
import org.onosproject.core.ApplicationId;
import org.onosproject.core.CoreService;
import org.onosproject.net.intent.Intent;
import org.onosproject.net.intent.IntentState;
import org.onosproject.net.intent.IntentService;
import org.onosproject.net.intent.IntentListener;
import org.onosproject.net.intent.IntentEvent;
import org.onosproject.net.intent.Key;
import java.math.BigInteger;
import java.util.EnumSet;
import java.util.Objects;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import static com.google.common.base.Strings.isNullOrEmpty;
import static org.onosproject.net.intent.IntentState.FAILED;
import static org.onosproject.net.intent.IntentState.WITHDRAWN;
/**
* Removes an intent.
*/
@Command(scope = "onos", name = "remove-intent",
description = "Removes the specified intent")
public class IntentRemoveCommand extends AbstractShellCommand {
@Argument(index = 0, name = "app",
description = "Application ID",
required = false, multiValued = false)
String applicationIdString = null;
@Argument(index = 1, name = "key",
description = "Intent Key",
required = false, multiValued = false)
String keyString = null;
@Option(name = "-p", aliases = "--purge",
description = "Purge the intent from the store after removal",
required = false, multiValued = false)
private boolean purgeAfterRemove = false;
@Option(name = "-s", aliases = "--sync",
description = "Waits for the removal before returning",
required = false, multiValued = false)
private boolean sync = false;
private static final EnumSet<IntentState> CAN_PURGE = EnumSet.of(WITHDRAWN, FAILED);
@Override
protected void execute() {
IntentService intentService = get(IntentService.class);
CoreService coreService = get(CoreService.class);
if (purgeAfterRemove || sync) {
print("Using \"sync\" to remove/purge intents - this may take a while...");
print("Check \"summary\" to see remove/purge progress.");
}
ApplicationId appId = appId();
if (!isNullOrEmpty(applicationIdString)) {
appId = coreService.getAppId(applicationIdString);
if (appId == null) {
print("Cannot find application Id %s", applicationIdString);
return;
}
}
if (isNullOrEmpty(keyString)) {
for (Intent intent : intentService.getIntents()) {
if (intent.appId().equals(appId)) {
removeIntent(intentService, intent);
}
}
} else {
final Key key;
if (keyString.startsWith("0x")) {
// The intent uses a LongKey
keyString = keyString.replaceFirst("0x", "");
key = Key.of(new BigInteger(keyString, 16).longValue(), appId);
} else {
// The intent uses a StringKey
key = Key.of(keyString, appId);
}
Intent intent = intentService.getIntent(key);
if (intent != null) {
removeIntent(intentService, intent);
}
}
}
private void removeIntent(IntentService intentService, Intent intent) {
IntentListener listener = null;
Key key = intent.key();
final CountDownLatch withdrawLatch, purgeLatch;
if (purgeAfterRemove || sync) {
// set up latch and listener to track uninstall progress
withdrawLatch = new CountDownLatch(1);
purgeLatch = purgeAfterRemove ? new CountDownLatch(1) : null;
listener = (IntentEvent event) -> {
if (Objects.equals(event.subject().key(), key)) {
if (event.type() == IntentEvent.Type.WITHDRAWN ||
event.type() == IntentEvent.Type.FAILED) {
withdrawLatch.countDown();
} else if (purgeAfterRemove &&
event.type() == IntentEvent.Type.PURGED) {
purgeLatch.countDown();
}
}
};
intentService.addListener(listener);
} else {
purgeLatch = null;
withdrawLatch = null;
}
// request the withdraw
intentService.withdraw(intent);
if (purgeAfterRemove || sync) {
try { // wait for withdraw event
withdrawLatch.await(5, TimeUnit.SECONDS);
} catch (InterruptedException e) {
print("Timed out waiting for intent {} withdraw", key);
}
if (purgeAfterRemove && CAN_PURGE.contains(intentService.getIntentState(key))) {
intentService.purge(intent);
if (sync) { // wait for purge event
/* TODO
Technically, the event comes before map.remove() is called.
If we depend on sync and purge working together, we will
need to address this.
*/
try {
purgeLatch.await(5, TimeUnit.SECONDS);
} catch (InterruptedException e) {
print("Timed out waiting for intent {} purge", key);
}
}
}
}
if (listener != null) {
// clean up the listener
intentService.removeListener(listener);
}
}
}
|
