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
|
/*
* 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.net.topology;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Maps;
import org.onosproject.net.AbstractDescription;
import org.onosproject.net.ConnectPoint;
import org.onosproject.net.Device;
import org.onosproject.net.DeviceId;
import org.onosproject.net.Link;
import org.onosproject.net.SparseAnnotations;
import org.slf4j.Logger;
import java.util.Map;
import static com.google.common.base.Preconditions.checkArgument;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Default implementation of an immutable topology graph data carrier.
*/
public class DefaultGraphDescription extends AbstractDescription
implements GraphDescription {
private static final Logger log = getLogger(DefaultGraphDescription.class);
private final long nanos;
private final long creationTime;
private final ImmutableSet<TopologyVertex> vertexes;
private final ImmutableSet<TopologyEdge> edges;
private final Map<DeviceId, TopologyVertex> vertexesById = Maps.newHashMap();
/**
* Creates a minimal topology graph description to allow core to construct
* and process the topology graph.
*
* @param nanos time in nanos of when the topology description was created
* @param devices collection of infrastructure devices
* @param links collection of infrastructure links
* @param annotations optional key/value annotations map
* @deprecated in Cardinal Release
*/
@Deprecated
public DefaultGraphDescription(long nanos, Iterable<Device> devices,
Iterable<Link> links,
SparseAnnotations... annotations) {
this(nanos, System.currentTimeMillis(), devices, links, annotations);
}
/**
* Creates a minimal topology graph description to allow core to construct
* and process the topology graph.
*
* @param nanos time in nanos of when the topology description was created
* @param millis time in millis of when the topology description was created
* @param devices collection of infrastructure devices
* @param links collection of infrastructure links
* @param annotations optional key/value annotations map
*/
public DefaultGraphDescription(long nanos, long millis,
Iterable<Device> devices,
Iterable<Link> links,
SparseAnnotations... annotations) {
super(annotations);
this.nanos = nanos;
this.creationTime = millis;
this.vertexes = buildVertexes(devices);
this.edges = buildEdges(links);
vertexesById.clear();
}
@Override
public long timestamp() {
return nanos;
}
@Override
public long creationTime() {
return creationTime;
}
@Override
public ImmutableSet<TopologyVertex> vertexes() {
return vertexes;
}
@Override
public ImmutableSet<TopologyEdge> edges() {
return edges;
}
// Builds a set of topology vertexes from the specified list of devices
private ImmutableSet<TopologyVertex> buildVertexes(Iterable<Device> devices) {
ImmutableSet.Builder<TopologyVertex> vertexes = ImmutableSet.builder();
for (Device device : devices) {
TopologyVertex vertex = new DefaultTopologyVertex(device.id());
vertexes.add(vertex);
vertexesById.put(vertex.deviceId(), vertex);
}
return vertexes.build();
}
// Builds a set of topology vertexes from the specified list of links
private ImmutableSet<TopologyEdge> buildEdges(Iterable<Link> links) {
ImmutableSet.Builder<TopologyEdge> edges = ImmutableSet.builder();
for (Link link : links) {
try {
edges.add(new DefaultTopologyEdge(vertexOf(link.src()),
vertexOf(link.dst()),
link));
} catch (IllegalArgumentException e) {
log.debug("Ignoring {}, missing vertex", link);
}
}
return edges.build();
}
// Fetches a vertex corresponding to the given connection point device.
private TopologyVertex vertexOf(ConnectPoint connectPoint) {
DeviceId id = connectPoint.deviceId();
TopologyVertex vertex = vertexesById.get(id);
checkArgument(vertex != null, "Vertex missing for %s", id);
return vertex;
}
}
|
