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
|
/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019 Nordix Foundation.
* Modifications Copyright (C) 2019-2020 AT&T Intellectual Property.
* Modifications Copyright (C) 2021 Bell Canada. 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.pap.main.rest;
import java.util.List;
import javax.ws.rs.core.Response;
import org.apache.commons.lang3.tuple.Pair;
import org.onap.policy.models.base.PfModelException;
import org.onap.policy.models.pap.concepts.PdpGroupStateChangeResponse;
import org.onap.policy.models.pdp.concepts.Pdp;
import org.onap.policy.models.pdp.concepts.PdpGroup;
import org.onap.policy.models.pdp.concepts.PdpStateChange;
import org.onap.policy.models.pdp.concepts.PdpSubGroup;
import org.onap.policy.models.pdp.concepts.PdpUpdate;
import org.onap.policy.models.pdp.enums.PdpState;
import org.onap.policy.models.provider.PolicyModelsProvider;
import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
import org.onap.policy.pap.main.comm.PdpMessageGenerator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Provider for PAP component to change state of PDP group.
*
* @author Ram Krishna Verma (ram.krishna.verma@est.tech)
*/
public class PdpGroupStateChangeProvider extends PdpMessageGenerator {
private static final Logger LOGGER = LoggerFactory.getLogger(PdpGroupStateChangeProvider.class);
/**
* Constructs the object.
*/
public PdpGroupStateChangeProvider() {
super(false);
}
/**
* Changes state of a PDP group.
*
* @param groupName name of the PDP group
* @param pdpGroupState state of the PDP group
* @return a pair containing the status and the response
* @throws PfModelException in case of errors
*/
public Pair<Response.Status, PdpGroupStateChangeResponse> changeGroupState(final String groupName,
final PdpState pdpGroupState) throws PfModelException {
synchronized (updateLock) {
switch (pdpGroupState) {
case ACTIVE:
handleActiveState(groupName);
break;
case PASSIVE:
handlePassiveState(groupName);
break;
default:
throw new PfModelException(Response.Status.BAD_REQUEST,
"Only ACTIVE or PASSIVE state changes are allowed");
}
return Pair.of(Response.Status.OK, new PdpGroupStateChangeResponse());
}
}
private void handleActiveState(final String groupName) throws PfModelException {
try (PolicyModelsProvider databaseProvider = modelProviderWrapper.create()) {
final List<PdpGroup> pdpGroups = databaseProvider.getPdpGroups(groupName);
if (!pdpGroups.isEmpty() && !PdpState.ACTIVE.equals(pdpGroups.get(0).getPdpGroupState())) {
updatePdpGroupAndPdp(databaseProvider, pdpGroups, PdpState.ACTIVE);
sendPdpMessage(pdpGroups.get(0), PdpState.ACTIVE, databaseProvider);
}
}
}
private void handlePassiveState(final String groupName) throws PfModelException {
try (PolicyModelsProvider databaseProvider = modelProviderWrapper.create()) {
final List<PdpGroup> pdpGroups = databaseProvider.getPdpGroups(groupName);
if (!pdpGroups.isEmpty() && !PdpState.PASSIVE.equals(pdpGroups.get(0).getPdpGroupState())) {
updatePdpGroupAndPdp(databaseProvider, pdpGroups, PdpState.PASSIVE);
sendPdpMessage(pdpGroups.get(0), PdpState.PASSIVE, databaseProvider);
}
}
}
private void updatePdpGroupAndPdp(final PolicyModelsProvider databaseProvider, final List<PdpGroup> pdpGroups,
final PdpState pdpState) throws PfModelException {
pdpGroups.get(0).setPdpGroupState(pdpState);
for (final PdpSubGroup subGroup : pdpGroups.get(0).getPdpSubgroups()) {
for (final Pdp pdp : subGroup.getPdpInstances()) {
pdp.setPdpState(pdpState);
}
}
databaseProvider.updatePdpGroups(pdpGroups);
LOGGER.debug("Updated PdpGroup and Pdp in DB - {} ", pdpGroups);
}
private void sendPdpMessage(final PdpGroup pdpGroup, final PdpState pdpState,
final PolicyModelsProvider databaseProvider) throws PfModelException {
String pdpGroupName = pdpGroup.getName();
for (final PdpSubGroup subGroup : pdpGroup.getPdpSubgroups()) {
List<ToscaPolicy> policies = getToscaPolicies(subGroup, databaseProvider);
for (final Pdp pdp : subGroup.getPdpInstances()) {
String pdpInstanceId = pdp.getInstanceId();
final PdpUpdate pdpUpdatemessage =
createPdpUpdateMessage(pdpGroup.getName(), subGroup, pdp.getInstanceId(), databaseProvider,
policies, policies, null);
final PdpStateChange pdpStateChangeMessage =
createPdpStateChangeMessage(pdpGroupName, subGroup, pdpInstanceId, pdpState);
updateDeploymentStatus(pdpGroupName, subGroup.getPdpType(), pdpInstanceId,
pdpStateChangeMessage.getState(), databaseProvider, pdpUpdatemessage.getPolicies());
requestMap.addRequest(pdpUpdatemessage, pdpStateChangeMessage);
LOGGER.debug("Sent PdpUpdate message - {}", pdpUpdatemessage);
LOGGER.debug("Sent PdpStateChange message - {}", pdpStateChangeMessage);
}
}
}
}
|
