1 files changed, 145 insertions, 0 deletions
diff --git a/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/inventory/CmHandleQueriesImpl.java b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/inventory/CmHandleQueriesImpl.java
new file mode 100644
index 000000000..b3ade4f1c
--- /dev/null
+++ b/cps-ncmp-service/src/main/java/org/onap/cps/ncmp/api/impl/inventory/CmHandleQueriesImpl.java
@@ -0,0 +1,145 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2022-2023 Nordix Foundation
+ *  Modifications 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.ncmp.api.impl.inventory;
+
+import static org.onap.cps.ncmp.api.impl.ncmppersistence.NcmpPersistence.NCMP_DATASPACE_NAME;
+import static org.onap.cps.ncmp.api.impl.ncmppersistence.NcmpPersistence.NCMP_DMI_REGISTRY_ANCHOR;
+import static org.onap.cps.ncmp.api.impl.ncmppersistence.NcmpPersistence.NCMP_DMI_REGISTRY_PARENT;
+import static org.onap.cps.spi.FetchDescendantsOption.INCLUDE_ALL_DESCENDANTS;
+import static org.onap.cps.spi.FetchDescendantsOption.OMIT_DESCENDANTS;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+import lombok.RequiredArgsConstructor;
+import org.onap.cps.ncmp.api.impl.inventory.enums.PropertyType;
+import org.onap.cps.spi.CpsDataPersistenceService;
+import org.onap.cps.spi.FetchDescendantsOption;
+import org.onap.cps.spi.model.DataNode;
+import org.springframework.stereotype.Component;
+
+@RequiredArgsConstructor
+@Component
+public class CmHandleQueriesImpl implements CmHandleQueries {
+
+    private static final String DESCENDANT_PATH = "//";
+
+    private final CpsDataPersistenceService cpsDataPersistenceService;
+    private static final String ANCESTOR_CM_HANDLES = "/ancestor::cm-handles";
+
+    @Override
+    public Collection<String> queryCmHandleAdditionalProperties(final Map<String, String> privatePropertyQueryPairs) {
+        return queryCmHandleAnyProperties(privatePropertyQueryPairs, PropertyType.ADDITIONAL);
+    }
+
+    @Override
+    public Collection<String> queryCmHandlePublicProperties(final Map<String, String> publicPropertyQueryPairs) {
+        return queryCmHandleAnyProperties(publicPropertyQueryPairs, PropertyType.PUBLIC);
+    }
+
+    @Override
+    public List<DataNode> queryCmHandlesByState(final CmHandleState cmHandleState) {
+        return queryCmHandleDataNodesByCpsPath("//state[@cm-handle-state=\"" + cmHandleState + "\"]",
+            INCLUDE_ALL_DESCENDANTS);
+    }
+
+    @Override
+    public List<DataNode> queryCmHandleDataNodesByCpsPath(final String cpsPath,
+            final FetchDescendantsOption fetchDescendantsOption) {
+        return cpsDataPersistenceService.queryDataNodes(NCMP_DATASPACE_NAME, NCMP_DMI_REGISTRY_ANCHOR,
+            cpsPath + ANCESTOR_CM_HANDLES, fetchDescendantsOption);
+    }
+
+    @Override
+    public boolean cmHandleHasState(final String cmHandleId, final CmHandleState requiredCmHandleState) {
+        final DataNode stateDataNode = getCmHandleState(cmHandleId);
+        final String cmHandleStateAsString = (String) stateDataNode.getLeaves().get("cm-handle-state");
+        return CmHandleState.valueOf(cmHandleStateAsString).equals(requiredCmHandleState);
+    }
+
+    @Override
+    public List<DataNode> queryCmHandlesByOperationalSyncState(final DataStoreSyncState dataStoreSyncState) {
+        return queryCmHandleDataNodesByCpsPath("//state/datastores" + "/operational[@sync-state=\""
+                + dataStoreSyncState + "\"]", FetchDescendantsOption.OMIT_DESCENDANTS);
+    }
+
+    @Override
+    public Collection<String> getCmHandleIdsByDmiPluginIdentifier(final String dmiPluginIdentifier) {
+        final Collection<String> cmHandleIds = new HashSet<>();
+        for (final ModelledDmiServiceLeaves modelledDmiServiceLeaf : ModelledDmiServiceLeaves.values()) {
+            for (final DataNode cmHandleAsDataNode: getCmHandlesByDmiPluginIdentifierAndDmiProperty(
+                    dmiPluginIdentifier,
+                    modelledDmiServiceLeaf.getLeafName())) {
+                cmHandleIds.add(cmHandleAsDataNode.getLeaves().get("id").toString());
+            }
+        }
+        return cmHandleIds;
+    }
+
+    private Collection<String> collectCmHandleIdsFromDataNodes(final Collection<DataNode> dataNodes) {
+        return dataNodes.stream().map(dataNode -> (String) dataNode.getLeaves().get("id")).collect(Collectors.toSet());
+    }
+
+    private Collection<String> queryCmHandleAnyProperties(
+        final Map<String, String> propertyQueryPairs,
+        final PropertyType propertyType) {
+        if (propertyQueryPairs.isEmpty()) {
+            return Collections.emptySet();
+        }
+        Collection<String> cmHandleIds = null;
+        for (final Map.Entry<String, String> publicPropertyQueryPair : propertyQueryPairs.entrySet()) {
+            final String cpsPath = DESCENDANT_PATH + propertyType.getYangContainerName() + "[@name=\""
+                + publicPropertyQueryPair.getKey()
+                + "\" and @value=\"" + publicPropertyQueryPair.getValue() + "\"]";
+
+            final Collection<DataNode> dataNodes = queryCmHandleDataNodesByCpsPath(cpsPath, OMIT_DESCENDANTS);
+            if (cmHandleIds == null) {
+                cmHandleIds = collectCmHandleIdsFromDataNodes(dataNodes);
+            } else {
+                final Collection<String> cmHandleIdsToRetain = collectCmHandleIdsFromDataNodes(dataNodes);
+                cmHandleIds.retainAll(cmHandleIdsToRetain);
+            }
+            if (cmHandleIds.isEmpty()) {
+                break;
+            }
+        }
+        return cmHandleIds;
+    }
+
+    private List<DataNode> getCmHandlesByDmiPluginIdentifierAndDmiProperty(final String dmiPluginIdentifier,
+                                                                           final String dmiProperty) {
+        return cpsDataPersistenceService.queryDataNodes(NCMP_DATASPACE_NAME, NCMP_DMI_REGISTRY_ANCHOR,
+                NCMP_DMI_REGISTRY_PARENT + "/cm-handles[@" + dmiProperty + "='" + dmiPluginIdentifier + "']",
+                OMIT_DESCENDANTS);
+    }
+
+    private DataNode getCmHandleState(final String cmHandleId) {
+        final String xpath = NCMP_DMI_REGISTRY_PARENT + "/cm-handles[@id='" + cmHandleId + "']/state";
+        return cpsDataPersistenceService.getDataNodes(NCMP_DATASPACE_NAME, NCMP_DMI_REGISTRY_ANCHOR,
+                xpath, OMIT_DESCENDANTS).iterator().next();
+    }
+}
+
+