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/*
* ============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.ncmp.api.inventory;
import static org.onap.cps.ncmp.api.impl.utils.YangDataConverter.convertYangModelCmHandleToNcmpServiceCmHandle;
import static org.onap.cps.spi.FetchDescendantsOption.INCLUDE_ALL_DESCENDANTS;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import lombok.RequiredArgsConstructor;
import org.onap.cps.ncmp.api.impl.utils.YangDataConverter;
import org.onap.cps.ncmp.api.models.NcmpServiceCmHandle;
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 CmHandleQueries {
private static final String NCMP_DATASPACE_NAME = "NCMP-Admin";
private static final String NCMP_DMI_REGISTRY_ANCHOR = "ncmp-dmi-registry";
private final CpsDataPersistenceService cpsDataPersistenceService;
private static final Map<String, NcmpServiceCmHandle> NO_QUERY_TO_EXECUTE = null;
private static final String ANCESTOR_CM_HANDLES = "/ancestor::cm-handles";
/**
* Query CmHandles based on PublicProperties.
*
* @param publicPropertyQueryPairs public properties for query
* @return CmHandles which have these public properties
*/
public Map<String, NcmpServiceCmHandle> queryCmHandlePublicProperties(
final Map<String, String> publicPropertyQueryPairs) {
if (publicPropertyQueryPairs.isEmpty()) {
return Collections.emptyMap();
}
Map<String, NcmpServiceCmHandle> cmHandleIdToNcmpServiceCmHandles = null;
for (final Map.Entry<String, String> publicPropertyQueryPair : publicPropertyQueryPairs.entrySet()) {
final String cpsPath = "//public-properties[@name=\"" + publicPropertyQueryPair.getKey()
+ "\" and @value=\"" + publicPropertyQueryPair.getValue() + "\"]";
final Collection<DataNode> dataNodes = getCmHandleDataNodesByCpsPath(cpsPath, INCLUDE_ALL_DESCENDANTS);
if (cmHandleIdToNcmpServiceCmHandles == null) {
cmHandleIdToNcmpServiceCmHandles = collectDataNodesToNcmpServiceCmHandles(dataNodes);
} else {
final Collection<String> cmHandleIdsToRetain = dataNodes.parallelStream()
.map(dataNode -> dataNode.getLeaves().get("id").toString()).collect(Collectors.toSet());
cmHandleIdToNcmpServiceCmHandles.keySet().retainAll(cmHandleIdsToRetain);
}
if (cmHandleIdToNcmpServiceCmHandles.isEmpty()) {
break;
}
}
return cmHandleIdToNcmpServiceCmHandles;
}
/**
* Combine Maps of CmHandles.
*
* @param firstQuery first CmHandles Map
* @param secondQuery second CmHandles Map
* @return combined Map of CmHandles
*/
public Map<String, NcmpServiceCmHandle> combineCmHandleQueries(
final Map<String, NcmpServiceCmHandle> firstQuery,
final Map<String, NcmpServiceCmHandle> secondQuery) {
if (firstQuery == NO_QUERY_TO_EXECUTE && secondQuery == NO_QUERY_TO_EXECUTE) {
return Collections.emptyMap();
} else if (firstQuery == NO_QUERY_TO_EXECUTE) {
return secondQuery;
} else if (secondQuery == NO_QUERY_TO_EXECUTE) {
return firstQuery;
} else {
firstQuery.keySet().retainAll(secondQuery.keySet());
return firstQuery;
}
}
/**
* Method which returns cm handles by the cm handles state.
*
* @param cmHandleState cm handle state
* @return a list of cm handles
*/
public List<DataNode> getCmHandlesByState(final CmHandleState cmHandleState) {
return getCmHandleDataNodesByCpsPath("//state[@cm-handle-state=\"" + cmHandleState + "\"]",
INCLUDE_ALL_DESCENDANTS);
}
/**
* Method to return data nodes representing the cm handles.
*
* @param cpsPath cps path for which the cmHandle is requested
* @return a list of data nodes representing the cm handles.
*/
public List<DataNode> getCmHandleDataNodesByCpsPath(final String cpsPath,
final FetchDescendantsOption fetchDescendantsOption) {
return cpsDataPersistenceService.queryDataNodes(NCMP_DATASPACE_NAME, NCMP_DMI_REGISTRY_ANCHOR,
cpsPath + ANCESTOR_CM_HANDLES, fetchDescendantsOption);
}
/**
* Method which returns cm handles by the cm handle id and state.
* @param cmHandleId cm handle id
* @param cmHandleState cm handle state
* @return a list of cm handles
*/
public List<DataNode> getCmHandlesByIdAndState(final String cmHandleId, final CmHandleState cmHandleState) {
return getCmHandleDataNodesByCpsPath("//cm-handles[@id='" + cmHandleId + "']/state[@cm-handle-state=\""
+ cmHandleState + "\"]", FetchDescendantsOption.OMIT_DESCENDANTS);
}
/**
* Method which returns cm handles by the operational sync state of cm handle.
* @param dataStoreSyncState sync state
* @return a list of cm handles
*/
public List<DataNode> getCmHandlesByOperationalSyncState(final DataStoreSyncState dataStoreSyncState) {
return getCmHandleDataNodesByCpsPath("//state/datastores" + "/operational[@sync-state=\""
+ dataStoreSyncState + "\"]", FetchDescendantsOption.OMIT_DESCENDANTS);
}
private Map<String, NcmpServiceCmHandle> collectDataNodesToNcmpServiceCmHandles(
final Collection<DataNode> dataNodes) {
final Map<String, NcmpServiceCmHandle> cmHandleIdToNcmpServiceCmHandle = new HashMap<>();
dataNodes.forEach(dataNode -> {
final NcmpServiceCmHandle ncmpServiceCmHandle = createNcmpServiceCmHandle(dataNode);
cmHandleIdToNcmpServiceCmHandle.put(ncmpServiceCmHandle.getCmHandleId(), ncmpServiceCmHandle);
});
return cmHandleIdToNcmpServiceCmHandle;
}
private NcmpServiceCmHandle createNcmpServiceCmHandle(final DataNode dataNode) {
return convertYangModelCmHandleToNcmpServiceCmHandle(YangDataConverter
.convertCmHandleToYangModel(dataNode, dataNode.getLeaves().get("id").toString()));
}
}
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