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
|
/*
* Copyright 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.cfg;
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.cfg.ComponentConfigEvent;
import org.onosproject.cfg.ComponentConfigStore;
import org.onosproject.cfg.ComponentConfigStoreDelegate;
import org.onosproject.store.AbstractStore;
import org.onosproject.store.serializers.KryoNamespaces;
import org.onosproject.store.service.EventuallyConsistentMap;
import org.onosproject.store.service.EventuallyConsistentMapEvent;
import org.onosproject.store.service.EventuallyConsistentMapListener;
import org.onosproject.store.service.LogicalClockService;
import org.onosproject.store.service.StorageService;
import org.slf4j.Logger;
import static org.onosproject.cfg.ComponentConfigEvent.Type.PROPERTY_SET;
import static org.onosproject.cfg.ComponentConfigEvent.Type.PROPERTY_UNSET;
import static org.onosproject.store.service.EventuallyConsistentMapEvent.Type.PUT;
import static org.onosproject.store.service.EventuallyConsistentMapEvent.Type.REMOVE;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Manages inventory of component configurations in a distributed data store
* that uses optimistic replication and gossip based anti-entropy techniques.
*/
@Component(immediate = true)
@Service
public class GossipComponentConfigStore
extends AbstractStore<ComponentConfigEvent, ComponentConfigStoreDelegate>
implements ComponentConfigStore {
private static final String SEP = "#";
private final Logger log = getLogger(getClass());
private EventuallyConsistentMap<String, String> properties;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected StorageService storageService;
@Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
protected LogicalClockService clockService;
@Activate
public void activate() {
KryoNamespace.Builder serializer = KryoNamespace.newBuilder()
.register(KryoNamespaces.API);
properties = storageService.<String, String>eventuallyConsistentMapBuilder()
.withName("cfg")
.withSerializer(serializer)
.withTimestampProvider((k, v) -> clockService.getTimestamp())
.build();
properties.addListener(new InternalPropertiesListener());
log.info("Started");
}
@Deactivate
public void deactivate() {
properties.destroy();
log.info("Stopped");
}
@Override
public void setProperty(String componentName, String name, String value) {
properties.put(key(componentName, name), value);
}
@Override
public void unsetProperty(String componentName, String name) {
properties.remove(key(componentName, name));
}
/**
* Listener to component configuration properties distributed map changes.
*/
private final class InternalPropertiesListener
implements EventuallyConsistentMapListener<String, String> {
@Override
public void event(EventuallyConsistentMapEvent<String, String> event) {
String[] keys = event.key().split(SEP);
String value = event.value();
if (event.type() == PUT) {
delegate.notify(new ComponentConfigEvent(PROPERTY_SET, keys[0], keys[1], value));
} else if (event.type() == REMOVE) {
delegate.notify(new ComponentConfigEvent(PROPERTY_UNSET, keys[0], keys[1], null));
}
}
}
// Generates a key from component name and property name.
private String key(String componentName, String name) {
return componentName + SEP + name;
}
}
|
