summaryrefslogtreecommitdiffstats
path: root/cps-ri/src/main/java/org/onap/cps/spi/repository/ModuleReferenceRepositoryImpl.java
blob: f85dea3a73e542864610d231691691f37e428efa (plain)
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
/*-
 * ============LICENSE_START=======================================================
 *  Copyright (C) 2022 Nordix Foundation.
 * ================================================================================
 * 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.spi.repository;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
import java.util.stream.Collectors;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import lombok.AllArgsConstructor;
import lombok.SneakyThrows;
import lombok.extern.slf4j.Slf4j;
import org.onap.cps.spi.CpsDataPersistenceService;
import org.onap.cps.spi.FetchDescendantsOption;
import org.onap.cps.spi.model.CmHandleQueryParameters;
import org.onap.cps.spi.model.DataNode;
import org.onap.cps.spi.model.ModuleReference;
import org.springframework.transaction.annotation.Transactional;

@Slf4j
@Transactional
@AllArgsConstructor
public class ModuleReferenceRepositoryImpl implements ModuleReferenceQuery {

    @PersistenceContext
    private EntityManager entityManager;

    private final CpsDataPersistenceService cpsDataPersistenceService;

    @Override
    @SneakyThrows
    public Collection<ModuleReference> identifyNewModuleReferences(
        final Collection<ModuleReference> moduleReferencesToCheck) {

        if (moduleReferencesToCheck == null || moduleReferencesToCheck.isEmpty()) {
            return Collections.emptyList();
        }

        final String tempTableName = "moduleReferencesToCheckTemp"
            + UUID.randomUUID().toString().replace("-", "");

        createTemporaryTable(tempTableName);
        insertDataIntoTable(tempTableName, moduleReferencesToCheck);

        return identifyNewModuleReferencesForCmHandle(tempTableName);
    }

    /**
     * Query and return cm handles that match the given query parameters.
     *
     * @param cmHandleQueryParameters the cm handle query parameters
     * @return collection of cm handle ids
     */
    @Override
    public Set<String> queryCmHandles(final CmHandleQueryParameters cmHandleQueryParameters) {

        if (cmHandleQueryParameters.getPublicProperties().entrySet().isEmpty()) {
            return getAllCmHandles();
        }

        final Collection<DataNode> amalgamatedQueryResult = new ArrayList<>();
        int queryConditionCounter = 0;
        for (final Map.Entry<String, String> entry : cmHandleQueryParameters.getPublicProperties().entrySet()) {
            final StringBuilder cmHandlePath = new StringBuilder();
            cmHandlePath.append("//public-properties[@name='").append(entry.getKey()).append("' ");
            cmHandlePath.append("and @value='").append(entry.getValue()).append("']");
            cmHandlePath.append("/ancestor::cm-handles");

            final Collection<DataNode> singleConditionQueryResult =
                cpsDataPersistenceService.queryDataNodes("NCMP-Admin",
                "ncmp-dmi-registry", String.valueOf(cmHandlePath), FetchDescendantsOption.OMIT_DESCENDANTS);
            if (++queryConditionCounter == 1) {
                amalgamatedQueryResult.addAll(singleConditionQueryResult);
            } else {
                amalgamatedQueryResult.retainAll(singleConditionQueryResult);
            }

            if (amalgamatedQueryResult.isEmpty()) {
                break;
            }
        }

        return extractCmHandleIds(amalgamatedQueryResult);
    }

    private Set<String> getAllCmHandles() {
        final Collection<DataNode> cmHandles = cpsDataPersistenceService.queryDataNodes("NCMP-Admin",
            "ncmp-dmi-registry", "//public-properties/ancestor::cm-handles",
            FetchDescendantsOption.OMIT_DESCENDANTS);
        return extractCmHandleIds(cmHandles);
    }

    private Set<String> extractCmHandleIds(final Collection<DataNode> cmHandles) {
        return cmHandles.stream().map(cmHandle -> cmHandle.getLeaves().get("id").toString())
            .collect(Collectors.toSet());
    }

    private void createTemporaryTable(final String tempTableName) {
        final StringBuilder sqlStringBuilder = new StringBuilder("CREATE TEMPORARY TABLE " + tempTableName + "(");
        sqlStringBuilder.append(" id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,");
        sqlStringBuilder.append(" module_name varchar NOT NULL,");
        sqlStringBuilder.append(" revision varchar NOT NULL");
        sqlStringBuilder.append(");");

        entityManager.createNativeQuery(sqlStringBuilder.toString()).executeUpdate();
    }

    private void insertDataIntoTable(final String tempTableName, final Collection<ModuleReference> moduleReferences) {
        final StringBuilder sqlStringBuilder = new StringBuilder("INSERT INTO  " + tempTableName);
        sqlStringBuilder.append(" (module_name, revision) ");
        sqlStringBuilder.append(" VALUES ");

        for (final ModuleReference moduleReference : moduleReferences) {
            sqlStringBuilder.append("('");
            sqlStringBuilder.append(moduleReference.getModuleName());
            sqlStringBuilder.append("', '");
            sqlStringBuilder.append(moduleReference.getRevision());
            sqlStringBuilder.append("'),");
        }

        // replace last ',' with ';'
        sqlStringBuilder.replace(sqlStringBuilder.length() - 1, sqlStringBuilder.length(), ";");

        entityManager.createNativeQuery(sqlStringBuilder.toString()).executeUpdate();
    }

    private Collection<ModuleReference> identifyNewModuleReferencesForCmHandle(final String tempTableName) {
        final String sql = String.format(
            "SELECT %1$s.module_name, %1$s.revision"
                + " FROM %1$s LEFT JOIN yang_resource"
                + " ON yang_resource.module_name=%1$s.module_name"
                + " AND yang_resource.revision=%1$s.revision"
                + " WHERE yang_resource.module_name IS NULL;", tempTableName);

        @SuppressWarnings("unchecked")
        final List<Object[]> resultsAsObjects = entityManager.createNativeQuery(sql).getResultList();

        final List<ModuleReference> resultsAsModuleReferences = new ArrayList<>(resultsAsObjects.size());
        for (final Object[] row : resultsAsObjects) {
            resultsAsModuleReferences.add(new ModuleReference((String) row[0], (String) row[1]));
        }

        return resultsAsModuleReferences;
    }
}