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
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
/*
* Copyright 2014 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.net.edgeservice.impl;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
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.onosproject.event.AbstractListenerManager;
import org.onosproject.event.Event;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.DeviceId;
import org.onosproject.net.device.DeviceEvent;
import org.onosproject.net.device.DeviceService;
import org.onosproject.net.edge.EdgePortEvent;
import org.onosproject.net.edge.EdgePortListener;
import org.onosproject.net.edge.EdgePortService;
import org.onosproject.net.flow.DefaultTrafficTreatment;
import org.onosproject.net.flow.TrafficTreatment;
import org.onosproject.net.link.LinkEvent;
import org.onosproject.net.packet.DefaultOutboundPacket;
import org.onosproject.net.packet.OutboundPacket;
import org.onosproject.net.packet.PacketService;
import org.onosproject.net.topology.Topology;
import org.onosproject.net.topology.TopologyEvent;
import org.onosproject.net.topology.TopologyListener;
import org.onosproject.net.topology.TopologyService;
import org.slf4j.Logger;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import static org.onosproject.net.device.DeviceEvent.Type.*;
import static org.onosproject.net.edge.EdgePortEvent.Type.EDGE_PORT_ADDED;
import static org.onosproject.net.edge.EdgePortEvent.Type.EDGE_PORT_REMOVED;
import static org.slf4j.LoggerFactory.getLogger;
/**
* This is an implementation of the edge net service.
*/
@Component(immediate = true)
@Service
public class EdgeManager
extends AbstractListenerManager<EdgePortEvent, EdgePortListener>
implements EdgePortService {
private final Logger log = getLogger(getClass());
private Topology topology;
private final Map<DeviceId, Set<ConnectPoint>> connectionPoints = Maps.newConcurrentMap();
private final TopologyListener topologyListener = new InnerTopologyListener();
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected PacketService packetService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected DeviceService deviceService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected TopologyService topologyService;
@Activate
public void activate() {
eventDispatcher.addSink(EdgePortEvent.class, listenerRegistry);
topologyService.addListener(topologyListener);
log.info("Started");
}
@Deactivate
public void deactivate() {
eventDispatcher.removeSink(EdgePortEvent.class);
topologyService.removeListener(topologyListener);
log.info("Stopped");
}
@Override
public boolean isEdgePoint(ConnectPoint point) {
return !topologyService.isInfrastructure(topologyService.currentTopology(), point);
}
@Override
public Iterable<ConnectPoint> getEdgePoints() {
ImmutableSet.Builder<ConnectPoint> builder = ImmutableSet.builder();
connectionPoints.forEach((k, v) -> v.forEach(builder::add));
return builder.build();
}
@Override
public Iterable<ConnectPoint> getEdgePoints(DeviceId deviceId) {
ImmutableSet.Builder<ConnectPoint> builder = ImmutableSet.builder();
Set<ConnectPoint> set = connectionPoints.get(deviceId);
if (set != null) {
set.forEach(builder::add);
}
return builder.build();
}
@Override
public void emitPacket(ByteBuffer data, Optional<TrafficTreatment> treatment) {
TrafficTreatment.Builder builder = treatment.isPresent() ?
DefaultTrafficTreatment.builder(treatment.get()) :
DefaultTrafficTreatment.builder();
getEdgePoints().forEach(p -> packetService.emit(packet(builder, p, data)));
}
@Override
public void emitPacket(DeviceId deviceId, ByteBuffer data,
Optional<TrafficTreatment> treatment) {
TrafficTreatment.Builder builder = treatment.isPresent() ?
DefaultTrafficTreatment.builder(treatment.get()) :
DefaultTrafficTreatment.builder();
getEdgePoints(deviceId).forEach(p -> packetService.emit(packet(builder, p, data)));
}
private OutboundPacket packet(TrafficTreatment.Builder builder, ConnectPoint point, ByteBuffer data) {
builder.setOutput(point.port());
return new DefaultOutboundPacket(point.deviceId(), builder.build(), data);
}
// Internal listener for topo events used to keep our edge-port cache
// up to date.
private class InnerTopologyListener implements TopologyListener {
@Override
public void event(TopologyEvent event) {
topology = event.subject();
List<Event> triggers = event.reasons();
if (triggers != null) {
triggers.forEach(reason -> {
if (reason instanceof DeviceEvent) {
processDeviceEvent((DeviceEvent) reason);
} else if (reason instanceof LinkEvent) {
processLinkEvent((LinkEvent) reason);
}
});
} else {
//FIXME special case of preexisting edgeport & no triggerless events could cause this to never hit and
//never discover an edgeport that should have been discovered.
loadAllEdgePorts();
}
}
}
// Initial loading of the edge port cache.
private void loadAllEdgePorts() {
deviceService.getAvailableDevices().forEach(d -> deviceService.getPorts(d.id())
.forEach(p -> addEdgePort(new ConnectPoint(d.id(), p.number()))));
}
// Processes a link event by adding or removing its end-points in our cache.
private void processLinkEvent(LinkEvent event) {
if (event.type() == LinkEvent.Type.LINK_ADDED) {
removeEdgePort(event.subject().src());
removeEdgePort(event.subject().dst());
} else if (event.type() == LinkEvent.Type.LINK_REMOVED) {
addEdgePort(event.subject().src());
addEdgePort(event.subject().dst());
}
}
// Processes a device event by adding or removing its end-points in our cache.
private void processDeviceEvent(DeviceEvent event) {
//FIXME handle the case where a device is suspended, this may or may not come up
DeviceEvent.Type type = event.type();
DeviceId id = event.subject().id();
if (type == DEVICE_ADDED ||
type == DEVICE_AVAILABILITY_CHANGED && deviceService.isAvailable(id)) {
// When device is added or becomes available, add all its ports
deviceService.getPorts(event.subject().id())
.forEach(p -> addEdgePort(new ConnectPoint(id, p.number())));
} else if (type == DEVICE_REMOVED ||
type == DEVICE_AVAILABILITY_CHANGED && !deviceService.isAvailable(id)) {
// When device is removed or becomes unavailable, remove all its ports
deviceService.getPorts(event.subject().id())
.forEach(p -> removeEdgePort(new ConnectPoint(id, p.number())));
connectionPoints.remove(id);
} else if (type == DeviceEvent.Type.PORT_ADDED ||
type == PORT_UPDATED && event.port().isEnabled()) {
addEdgePort(new ConnectPoint(id, event.port().number()));
} else if (type == DeviceEvent.Type.PORT_REMOVED ||
type == PORT_UPDATED && !event.port().isEnabled()) {
removeEdgePort(new ConnectPoint(id, event.port().number()));
}
}
// Adds the specified connection point to the edge points if needed.
private void addEdgePort(ConnectPoint point) {
if (!topologyService.isInfrastructure(topology, point) && !point.port().isLogical()) {
Set<ConnectPoint> set = connectionPoints.get(point.deviceId());
if (set == null) {
set = Sets.newConcurrentHashSet();
connectionPoints.put(point.deviceId(), set);
}
if (set.add(point)) {
post(new EdgePortEvent(EDGE_PORT_ADDED, point));
}
}
}
// Removes the specified connection point from the edge points.
private void removeEdgePort(ConnectPoint point) {
if (!point.port().isLogical()) {
Set<ConnectPoint> set = connectionPoints.get(point.deviceId());
if (set == null) {
return;
}
if (set.remove(point)) {
post(new EdgePortEvent(EDGE_PORT_REMOVED, point));
}
if (set.isEmpty()) {
connectionPoints.remove(point.deviceId());
}
}
}
}
|
