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
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
/*
* 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.store.packet.impl;
import com.google.common.collect.Lists;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.apache.felix.scr.annotations.Service;
import org.onlab.util.KryoNamespace;
import org.onosproject.cluster.ClusterService;
import org.onosproject.cluster.NodeId;
import org.onosproject.mastership.MastershipService;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.packet.OutboundPacket;
import org.onosproject.net.packet.PacketEvent;
import org.onosproject.net.packet.PacketEvent.Type;
import org.onosproject.net.packet.PacketRequest;
import org.onosproject.net.packet.PacketStore;
import org.onosproject.net.packet.PacketStoreDelegate;
import org.onosproject.store.AbstractStore;
import org.onosproject.store.cluster.messaging.ClusterCommunicationService;
import org.onosproject.store.cluster.messaging.MessageSubject;
import org.onosproject.store.serializers.KryoNamespaces;
import org.onosproject.store.serializers.KryoSerializer;
import org.onosproject.store.service.ConsistentMap;
import org.onosproject.store.service.Serializer;
import org.onosproject.store.service.StorageService;
import org.onosproject.store.service.Versioned;
import org.slf4j.Logger;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import static org.onlab.util.Tools.groupedThreads;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Distributed packet store implementation allowing packets to be sent to
* remote instances.
*/
@Component(immediate = true)
@Service
public class DistributedPacketStore
extends AbstractStore<PacketEvent, PacketStoreDelegate>
implements PacketStore {
private final Logger log = getLogger(getClass());
// TODO: make this configurable.
private static final int MESSAGE_HANDLER_THREAD_POOL_SIZE = 4;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected MastershipService mastershipService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected ClusterService clusterService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected ClusterCommunicationService communicationService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected StorageService storageService;
private PacketRequestTracker tracker;
private static final MessageSubject PACKET_OUT_SUBJECT =
new MessageSubject("packet-out");
private static final KryoSerializer SERIALIZER = new KryoSerializer() {
@Override
protected void setupKryoPool() {
serializerPool = KryoNamespace.newBuilder()
.register(KryoNamespaces.API)
.nextId(KryoNamespaces.BEGIN_USER_CUSTOM_ID)
.build();
}
};
private ExecutorService messageHandlingExecutor;
@Activate
public void activate() {
messageHandlingExecutor = Executors.newFixedThreadPool(
MESSAGE_HANDLER_THREAD_POOL_SIZE,
groupedThreads("onos/store/packet", "message-handlers"));
communicationService.<OutboundPacket>addSubscriber(PACKET_OUT_SUBJECT,
SERIALIZER::decode,
packet -> notifyDelegate(new PacketEvent(Type.EMIT, packet)),
messageHandlingExecutor);
tracker = new PacketRequestTracker();
log.info("Started");
}
@Deactivate
public void deactivate() {
communicationService.removeSubscriber(PACKET_OUT_SUBJECT);
messageHandlingExecutor.shutdown();
log.info("Stopped");
}
@Override
public void emit(OutboundPacket packet) {
NodeId myId = clusterService.getLocalNode().id();
NodeId master = mastershipService.getMasterFor(packet.sendThrough());
if (master == null) {
return;
}
if (myId.equals(master)) {
notifyDelegate(new PacketEvent(Type.EMIT, packet));
return;
}
communicationService.unicast(packet, PACKET_OUT_SUBJECT, SERIALIZER::encode, master)
.whenComplete((r, error) -> {
if (error != null) {
log.warn("Failed to send packet-out to {}", master, error);
}
});
}
@Override
public boolean requestPackets(PacketRequest request) {
return tracker.add(request);
}
@Override
public boolean cancelPackets(PacketRequest request) {
return tracker.remove(request);
}
@Override
public List<PacketRequest> existingRequests() {
return tracker.requests();
}
private class PacketRequestTracker {
private ConsistentMap<TrafficSelector, Set<PacketRequest>> requests;
public PacketRequestTracker() {
requests = storageService.<TrafficSelector, Set<PacketRequest>>consistentMapBuilder()
.withName("onos-packet-requests")
.withPartitionsDisabled()
.withSerializer(Serializer.using(KryoNamespaces.API))
.build();
}
public boolean add(PacketRequest request) {
Versioned<Set<PacketRequest>> old = requests.get(request.selector());
if (old != null && old.value().contains(request)) {
return false;
}
// FIXME: add retry logic using a random delay
Set<PacketRequest> newSet = new HashSet<>();
newSet.add(request);
if (old == null) {
return requests.putIfAbsent(request.selector(), newSet) == null;
}
newSet.addAll(old.value());
return requests.replace(request.selector(), old.version(), newSet);
}
public boolean remove(PacketRequest request) {
Versioned<Set<PacketRequest>> old = requests.get(request.selector());
if (old == null || !old.value().contains(request)) {
return false;
}
// FIXME: add retry logic using a random delay
Set<PacketRequest> newSet = new HashSet<>(old.value());
newSet.remove(request);
if (newSet.isEmpty()) {
return requests.remove(request.selector(), old.version());
}
return requests.replace(request.selector(), old.version(), newSet);
}
public List<PacketRequest> requests() {
List<PacketRequest> list = Lists.newArrayList();
requests.values().forEach(v -> list.addAll(v.value()));
list.sort((o1, o2) -> o1.priority().priorityValue() - o2.priority().priorityValue());
return list;
}
}
}
|
