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
|
/*-
* ============LICENSE_START=======================================================
* policy engine
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.drools.impl;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Queue;
import org.onap.policy.appc.Request;
import org.onap.policy.appclcm.LCMRequestWrapper;
import org.onap.policy.controlloop.ControlLoopNotification;
import org.onap.policy.controlloop.util.Serialization;
import org.onap.policy.drools.PolicyEngine;
import org.onap.policy.drools.PolicyEngineListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class PolicyEngineJUnitImpl implements PolicyEngine {
private static final Logger logger = LoggerFactory.getLogger(PolicyEngineJUnitImpl.class);
private Map<String, Map<String, Queue<Object>>> busMap = new HashMap<>();
private List<PolicyEngineListener> listeners = new ArrayList<>();
/**
* Adds all objects that implement PolicyEngineListener to the notification list when an event
* occurs.
*
* @param listener an object that is interest in knowing about events published to the
* PolicyEngine
*/
public void addListener(PolicyEngineListener listener) {
listeners.add(listener);
}
/**
* Notifies all listeners about a new event.
*
* @param topic the topic in which the notification was sent to
*/
public void notifyListeners(String topic) {
for (PolicyEngineListener listener : listeners) {
listener.newEventNotification(topic);
}
}
@Override
public boolean deliver(String busType, String topic, Object obj) {
if (obj instanceof ControlLoopNotification) {
ControlLoopNotification notification = (ControlLoopNotification) obj;
if (logger.isDebugEnabled()) {
logger.debug(Serialization.gsonPretty.toJson(notification));
}
}
if (obj instanceof Request) {
Request request = (Request) obj;
logger.debug("Request: {} subrequest {}", request.getAction(), request.getCommonHeader().getSubRequestID());
} else if (obj instanceof LCMRequestWrapper) {
LCMRequestWrapper dmaapRequest = (LCMRequestWrapper) obj;
logger.debug("Request: {} subrequest {}", dmaapRequest.getBody().getAction(),
dmaapRequest.getBody().getCommonHeader().getSubRequestId());
}
//
// Does the bus exist?
//
if (!busMap.containsKey(busType)) {
logger.debug("creating new bus type {}", busType);
//
// Create the bus
//
busMap.put(busType, new HashMap<>());
}
//
// Get the bus
//
Map<String, Queue<Object>> topicMap = busMap.get(busType);
//
// Does the topic exist?
//
if (!topicMap.containsKey(topic)) {
logger.debug("creating new topic {}", topic);
//
// Create the topic
//
topicMap.put(topic, new LinkedList<>());
}
//
// Get the topic queue
//
logger.debug("queueing");
boolean res = topicMap.get(topic).add(obj);
notifyListeners(topic);
return res;
}
/**
* Subscribe to a topic on a bus.
*
* @param busType the bus type
* @param topic the topic
* @return the head of the queue, or <code>null</code> if the queue or bus does not exist or the
* queue is empty
*/
public Object subscribe(String busType, String topic) {
//
// Does the bus exist?
//
if (busMap.containsKey(busType)) {
//
// Get the bus
//
Map<String, Queue<Object>> topicMap = busMap.get(busType);
//
// Does the topic exist?
//
if (topicMap.containsKey(topic)) {
logger.debug("The queue has {}", topicMap.get(topic).size());
return topicMap.get(topic).poll();
} else {
logger.error("No topic exists {}", topic);
}
} else {
logger.error("No bus exists {}", busType);
}
return null;
}
}
|
