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
198
199
200
201
202
203
204
|
/*
* ============LICENSE_START=======================================================
* Copyright (C) 2023 TechMahindra Ltd.
* ================================================================================
* 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.cps.api.impl;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import lombok.extern.slf4j.Slf4j;
import org.onap.cps.api.CpsDeltaService;
import org.onap.cps.spi.model.DataNode;
import org.onap.cps.spi.model.DeltaReport;
import org.onap.cps.spi.model.DeltaReportBuilder;
import org.springframework.stereotype.Service;
@Slf4j
@Service
public class CpsDeltaServiceImpl implements CpsDeltaService {
@Override
public List<DeltaReport> getDeltaReports(final Collection<DataNode> sourceDataNodes,
final Collection<DataNode> targetDataNodes) {
final List<DeltaReport> deltaReport = new ArrayList<>();
final Map<String, DataNode> xpathToSourceDataNodes = convertToXPathToDataNodesMap(sourceDataNodes);
final Map<String, DataNode> xpathToTargetDataNodes = convertToXPathToDataNodesMap(targetDataNodes);
deltaReport.addAll(getRemovedAndUpdatedDeltaReports(xpathToSourceDataNodes, xpathToTargetDataNodes));
deltaReport.addAll(getAddedDeltaReports(xpathToSourceDataNodes, xpathToTargetDataNodes));
return Collections.unmodifiableList(deltaReport);
}
private static Map<String, DataNode> convertToXPathToDataNodesMap(
final Collection<DataNode> dataNodes) {
final Map<String, DataNode> xpathToDataNode = new LinkedHashMap<>();
for (final DataNode dataNode : dataNodes) {
xpathToDataNode.put(dataNode.getXpath(), dataNode);
final Collection<DataNode> childDataNodes = dataNode.getChildDataNodes();
if (!childDataNodes.isEmpty()) {
xpathToDataNode.putAll(convertToXPathToDataNodesMap(childDataNodes));
}
}
return xpathToDataNode;
}
private static List<DeltaReport> getRemovedAndUpdatedDeltaReports(
final Map<String, DataNode> xpathToSourceDataNodes,
final Map<String, DataNode> xpathToTargetDataNodes) {
final List<DeltaReport> removedAndUpdatedDeltaReportEntries = new ArrayList<>();
for (final Map.Entry<String, DataNode> entry: xpathToSourceDataNodes.entrySet()) {
final String xpath = entry.getKey();
final DataNode sourceDataNode = entry.getValue();
final DataNode targetDataNode = xpathToTargetDataNodes.get(xpath);
final List<DeltaReport> deltaReports;
if (targetDataNode == null) {
deltaReports = getRemovedDeltaReports(xpath, sourceDataNode);
} else {
deltaReports = getUpdatedDeltaReports(xpath, sourceDataNode, targetDataNode);
}
removedAndUpdatedDeltaReportEntries.addAll(deltaReports);
}
return removedAndUpdatedDeltaReportEntries;
}
private static List<DeltaReport> getRemovedDeltaReports(final String xpath, final DataNode sourceDataNode) {
final List<DeltaReport> removedDeltaReportEntries = new ArrayList<>();
final Map<String, Serializable> sourceDataNodeLeaves = sourceDataNode.getLeaves();
final DeltaReport removedDeltaReportEntry = new DeltaReportBuilder().actionRemove().withXpath(xpath)
.withSourceData(sourceDataNodeLeaves).build();
removedDeltaReportEntries.add(removedDeltaReportEntry);
return removedDeltaReportEntries;
}
private static List<DeltaReport> getUpdatedDeltaReports(final String xpath, final DataNode sourceDataNode,
final DataNode targetDataNode) {
final List<DeltaReport> updatedDeltaReportEntries = new ArrayList<>();
final Map<Map<String, Serializable>, Map<String, Serializable>> updatedLeavesAsSourceDataToTargetData =
getUpdatedLeavesBetweenSourceAndTargetDataNode(sourceDataNode.getLeaves(), targetDataNode.getLeaves());
addUpdatedLeavesToDeltaReport(xpath, updatedLeavesAsSourceDataToTargetData, updatedDeltaReportEntries);
return updatedDeltaReportEntries;
}
private static Map<Map<String, Serializable>,
Map<String, Serializable>> getUpdatedLeavesBetweenSourceAndTargetDataNode(
final Map<String, Serializable> leavesOfSourceDataNode,
final Map<String, Serializable> leavesOfTargetDataNode) {
final Map<Map<String, Serializable>, Map<String, Serializable>> updatedLeavesAsSourceDataToTargetData =
new LinkedHashMap<>();
final Map<String, Serializable> sourceDataInDeltaReport = new LinkedHashMap<>();
final Map<String, Serializable> targetDataInDeltaReport = new LinkedHashMap<>();
processLeavesPresentInSourceAndTargetDataNode(leavesOfSourceDataNode, leavesOfTargetDataNode,
sourceDataInDeltaReport, targetDataInDeltaReport);
processLeavesUniqueInTargetDataNode(leavesOfSourceDataNode, leavesOfTargetDataNode,
sourceDataInDeltaReport, targetDataInDeltaReport);
final boolean isUpdatedDataInDeltaReport =
!sourceDataInDeltaReport.isEmpty() || !targetDataInDeltaReport.isEmpty();
if (isUpdatedDataInDeltaReport) {
updatedLeavesAsSourceDataToTargetData.put(sourceDataInDeltaReport, targetDataInDeltaReport);
}
return updatedLeavesAsSourceDataToTargetData;
}
private static void processLeavesPresentInSourceAndTargetDataNode(
final Map<String, Serializable> leavesOfSourceDataNode,
final Map<String, Serializable> leavesOfTargetDataNode,
final Map<String, Serializable> sourceDataInDeltaReport,
final Map<String, Serializable> targetDataInDeltaReport) {
for (final Map.Entry<String, Serializable> entry: leavesOfSourceDataNode.entrySet()) {
final String key = entry.getKey();
final Serializable sourceLeaf = entry.getValue();
final Serializable targetLeaf = leavesOfTargetDataNode.get(key);
compareLeaves(key, sourceLeaf, targetLeaf, sourceDataInDeltaReport, targetDataInDeltaReport);
}
}
private static void processLeavesUniqueInTargetDataNode(
final Map<String, Serializable> leavesOfSourceDataNode,
final Map<String, Serializable> leavesOfTargetDataNode,
final Map<String, Serializable> sourceDataInDeltaReport,
final Map<String, Serializable> targetDataInDeltaReport) {
final Map<String, Serializable> uniqueLeavesOfTargetDataNode =
new LinkedHashMap<>(leavesOfTargetDataNode);
uniqueLeavesOfTargetDataNode.keySet().removeAll(leavesOfSourceDataNode.keySet());
for (final Map.Entry<String, Serializable> entry: uniqueLeavesOfTargetDataNode.entrySet()) {
final String key = entry.getKey();
final Serializable targetLeaf = entry.getValue();
final Serializable sourceLeaf = leavesOfSourceDataNode.get(key);
compareLeaves(key, sourceLeaf, targetLeaf, sourceDataInDeltaReport, targetDataInDeltaReport);
}
}
private static void compareLeaves(final String key,
final Serializable sourceLeaf,
final Serializable targetLeaf,
final Map<String, Serializable> sourceDataInDeltaReport,
final Map<String, Serializable> targetDataInDeltaReport) {
if (sourceLeaf != null && targetLeaf != null) {
if (!Objects.equals(sourceLeaf, targetLeaf)) {
sourceDataInDeltaReport.put(key, sourceLeaf);
targetDataInDeltaReport.put(key, targetLeaf);
}
} else if (sourceLeaf == null) {
targetDataInDeltaReport.put(key, targetLeaf);
} else {
sourceDataInDeltaReport.put(key, sourceLeaf);
}
}
private static void addUpdatedLeavesToDeltaReport(final String xpath,
final Map<Map<String, Serializable>, Map<String,
Serializable>> updatedLeavesAsSourceDataToTargetData,
final List<DeltaReport> updatedDeltaReportEntries) {
for (final Map.Entry<Map<String, Serializable>, Map<String, Serializable>> entry:
updatedLeavesAsSourceDataToTargetData.entrySet()) {
final DeltaReport updatedDataForDeltaReport = new DeltaReportBuilder().actionUpdate()
.withXpath(xpath).withSourceData(entry.getKey()).withTargetData(entry.getValue()).build();
updatedDeltaReportEntries.add(updatedDataForDeltaReport);
}
}
private static List<DeltaReport> getAddedDeltaReports(final Map<String, DataNode> xpathToSourceDataNodes,
final Map<String, DataNode> xpathToTargetDataNodes) {
final List<DeltaReport> addedDeltaReportEntries = new ArrayList<>();
final Map<String, DataNode> xpathToAddedNodes = new LinkedHashMap<>(xpathToTargetDataNodes);
xpathToAddedNodes.keySet().removeAll(xpathToSourceDataNodes.keySet());
for (final Map.Entry<String, DataNode> entry: xpathToAddedNodes.entrySet()) {
final String xpath = entry.getKey();
final DataNode dataNode = entry.getValue();
final DeltaReport addedDataForDeltaReport = new DeltaReportBuilder().actionAdd().withXpath(xpath)
.withTargetData(dataNode.getLeaves()).build();
addedDeltaReportEntries.add(addedDataForDeltaReport);
}
return addedDeltaReportEntries;
}
}
|
