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
|
/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.pdpx.main.startstop;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.Properties;
import lombok.Getter;
import lombok.Setter;
import org.onap.policy.common.endpoints.event.comm.TopicEndpoint;
import org.onap.policy.common.endpoints.event.comm.TopicSource;
import org.onap.policy.common.endpoints.event.comm.client.TopicSinkClient;
import org.onap.policy.common.endpoints.event.comm.client.TopicSinkClientException;
import org.onap.policy.common.endpoints.listeners.MessageTypeDispatcher;
import org.onap.policy.common.parameters.ParameterService;
import org.onap.policy.common.utils.services.ServiceManagerContainer;
import org.onap.policy.models.pdp.concepts.PdpStatus;
import org.onap.policy.models.pdp.enums.PdpMessageType;
import org.onap.policy.pdpx.main.PolicyXacmlPdpRuntimeException;
import org.onap.policy.pdpx.main.XacmlState;
import org.onap.policy.pdpx.main.comm.XacmlPdpHearbeatPublisher;
import org.onap.policy.pdpx.main.comm.listeners.XacmlPdpStateChangeListener;
import org.onap.policy.pdpx.main.comm.listeners.XacmlPdpUpdateListener;
import org.onap.policy.pdpx.main.parameters.XacmlPdpParameterGroup;
import org.onap.policy.pdpx.main.rest.XacmlPdpApplicationManager;
import org.onap.policy.pdpx.main.rest.XacmlPdpRestServer;
import org.onap.policy.pdpx.main.rest.XacmlPdpStatisticsManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This class wraps a distributor so that it can be activated as a complete service together with
* all its xacml pdp and forwarding handlers.
*/
public class XacmlPdpActivator extends ServiceManagerContainer {
// The logger for this class
private static final Logger LOGGER = LoggerFactory.getLogger(XacmlPdpActivator.class);
private static final String[] MSG_TYPE_NAMES = {"messageName"};
private static final String TOPIC = "POLICY-PDP-PAP";
@Getter
@Setter
private static XacmlPdpActivator current = null;
// The parameters of this policy xacml pdp activator
private final XacmlPdpParameterGroup xacmlPdpParameterGroup;
/**
* The XACML PDP REST API server.
*/
private XacmlPdpRestServer restServer;
/**
* Listens for messages on the topic, decodes them into a {@link PdpStatus} message, and then
* dispatches them to appropriate listener.
*/
private final MessageTypeDispatcher msgDispatcher;
/**
* Instantiate the activator for policy xacml pdp as a complete service.
*
* @param xacmlPdpParameterGroup the parameters for the xacml pdp service
* @param topicProperties properties used to configure the topics
*/
public XacmlPdpActivator(final XacmlPdpParameterGroup xacmlPdpParameterGroup, Properties topicProperties) {
LOGGER.info("Activator initializing using {} and {}", xacmlPdpParameterGroup, topicProperties);
TopicEndpoint.manager.addTopicSinks(topicProperties);
TopicEndpoint.manager.addTopicSources(topicProperties);
XacmlPdpHearbeatPublisher heartbeat;
try {
XacmlPdpApplicationManager appmgr =
new XacmlPdpApplicationManager(Paths.get(xacmlPdpParameterGroup.getApplicationPath()));
XacmlPdpApplicationManager.setCurrent(appmgr);
XacmlPdpStatisticsManager stats = new XacmlPdpStatisticsManager();
XacmlPdpStatisticsManager.setCurrent(stats);
stats.setTotalPolicyTypesCount(appmgr.getPolicyTypeCount());
XacmlState state = new XacmlState(appmgr);
this.xacmlPdpParameterGroup = xacmlPdpParameterGroup;
this.msgDispatcher = new MessageTypeDispatcher(MSG_TYPE_NAMES);
TopicSinkClient sinkClient = new TopicSinkClient(TOPIC);
heartbeat = new XacmlPdpHearbeatPublisher(sinkClient, state);
/*
* since the dispatcher isn't registered with the topic yet, we can go ahead
* and register the listeners with it.
*/
msgDispatcher.register(PdpMessageType.PDP_STATE_CHANGE.name(),
new XacmlPdpStateChangeListener(sinkClient, state));
msgDispatcher.register(PdpMessageType.PDP_UPDATE.name(),
new XacmlPdpUpdateListener(sinkClient, state, heartbeat, appmgr));
} catch (RuntimeException | TopicSinkClientException e) {
throw new PolicyXacmlPdpRuntimeException(e.getMessage(), e);
}
xacmlPdpParameterGroup.getRestServerParameters().setName(xacmlPdpParameterGroup.getName());
// @formatter:off
addAction("XACML PDP parameters",
() -> ParameterService.register(xacmlPdpParameterGroup),
() -> ParameterService.deregister(xacmlPdpParameterGroup.getName()));
addAction("Message Dispatcher",
this::registerMsgDispatcher,
this::unregisterMsgDispatcher);
addAction("topics",
TopicEndpoint.manager::start,
TopicEndpoint.manager::shutdown);
// initial heart beats act as registration messages
addAction("Heartbeat Publisher",
heartbeat::start,
heartbeat::terminate);
addAction("Create REST server",
() -> restServer = new XacmlPdpRestServer(xacmlPdpParameterGroup.getRestServerParameters()),
() -> restServer = null);
addAction("REST server",
() -> restServer.start(),
() -> restServer.stop());
// @formatter:on
}
/**
* Get the parameters used by the activator.
*
* @return the parameters of the activator
*/
public XacmlPdpParameterGroup getParameterGroup() {
return xacmlPdpParameterGroup;
}
/**
* Method to register the parameters to Common Parameter Service.
*
* @param xacmlPdpParameterGroup the xacml pdp parameter group
*/
public void registerToParameterService(final XacmlPdpParameterGroup xacmlPdpParameterGroup) {
ParameterService.register(xacmlPdpParameterGroup);
}
/**
* Method to deregister the parameters from Common Parameter Service.
*
* @param xacmlPdpParameterGroup the xacml pdp parameter group
*/
public void deregisterToParameterService(final XacmlPdpParameterGroup xacmlPdpParameterGroup) {
ParameterService.deregister(xacmlPdpParameterGroup.getName());
}
/**
* Registers the dispatcher with the topic source(s).
*/
private void registerMsgDispatcher() {
for (TopicSource source : TopicEndpoint.manager.getTopicSources(Arrays.asList(TOPIC))) {
source.register(msgDispatcher);
}
}
/**
* Unregisters the dispatcher from the topic source(s).
*/
private void unregisterMsgDispatcher() {
for (TopicSource source : TopicEndpoint.manager.getTopicSources(Arrays.asList(TOPIC))) {
source.unregister(msgDispatcher);
}
}
}
|
