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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.impl;
import static org.onap.cps.ncmp.api.impl.utils.YangDataConverter.convertYangModelCmHandleToNcmpServiceCmHandle;
import static org.onap.cps.spi.FetchDescendantsOption.FETCH_DIRECT_CHILDREN_ONLY;
import static org.onap.cps.spi.FetchDescendantsOption.INCLUDE_ALL_DESCENDANTS;
import static org.onap.cps.utils.CmHandleQueryRestParametersValidator.validateCpsPathConditionProperties;
import static org.onap.cps.utils.CmHandleQueryRestParametersValidator.validateModuleNameConditionProperties;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.function.Function;
import java.util.stream.Collectors;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.onap.cps.cpspath.parser.PathParsingException;
import org.onap.cps.ncmp.api.NetworkCmProxyCmHandlerQueryService;
import org.onap.cps.ncmp.api.impl.utils.YangDataConverter;
import org.onap.cps.ncmp.api.inventory.CmHandleQueries;
import org.onap.cps.ncmp.api.inventory.InventoryPersistence;
import org.onap.cps.ncmp.api.models.NcmpServiceCmHandle;
import org.onap.cps.spi.exceptions.DataValidationException;
import org.onap.cps.spi.model.Anchor;
import org.onap.cps.spi.model.CmHandleQueryServiceParameters;
import org.onap.cps.spi.model.ConditionProperties;
import org.onap.cps.spi.model.DataNode;
import org.onap.cps.utils.ValidQueryProperties;
import org.springframework.stereotype.Service;
@Service
@Slf4j
@RequiredArgsConstructor
public class NetworkCmProxyCmHandlerQueryServiceImpl implements NetworkCmProxyCmHandlerQueryService {
private static final Map<String, NcmpServiceCmHandle> NO_QUERY_TO_EXECUTE = null;
private final CmHandleQueries cmHandleQueries;
private final InventoryPersistence inventoryPersistence;
/**
* Query and return cm handles that match the given query parameters.
*
* @param cmHandleQueryServiceParameters the cm handle query parameters
* @return collection of cm handles
*/
@Override
public Set<NcmpServiceCmHandle> queryCmHandles(
final CmHandleQueryServiceParameters cmHandleQueryServiceParameters) {
if (cmHandleQueryServiceParameters.getCmHandleQueryParameters().isEmpty()) {
return getAllCmHandles();
}
final Map<String, NcmpServiceCmHandle> combinedQueryResult = executeInventoryQueries(
cmHandleQueryServiceParameters);
return new HashSet<>(combineWithModuleNameQuery(cmHandleQueryServiceParameters, combinedQueryResult).values());
}
/**
* Query and return cm handles that match the given query parameters.
*
* @param cmHandleQueryServiceParameters the cm handle query parameters
* @return collection of cm handle ids
*/
@Override
public Set<String> queryCmHandleIds(
final CmHandleQueryServiceParameters cmHandleQueryServiceParameters) {
if (cmHandleQueryServiceParameters.getCmHandleQueryParameters().isEmpty()) {
return getAllCmHandleIds();
}
final Map<String, NcmpServiceCmHandle> combinedQueryResult = executeInventoryQueries(
cmHandleQueryServiceParameters);
final Collection<String> moduleNamesForQuery =
getModuleNamesForQuery(cmHandleQueryServiceParameters.getCmHandleQueryParameters());
if (moduleNamesForQuery.isEmpty()) {
return combinedQueryResult.keySet();
}
final Set<String> moduleNameQueryResult = getNamesOfAnchorsWithGivenModules(moduleNamesForQuery);
if (combinedQueryResult == NO_QUERY_TO_EXECUTE) {
return moduleNameQueryResult;
}
moduleNameQueryResult.retainAll(combinedQueryResult.keySet());
return moduleNameQueryResult;
}
private Map<String, NcmpServiceCmHandle> combineWithModuleNameQuery(
final CmHandleQueryServiceParameters cmHandleQueryServiceParameters,
final Map<String, NcmpServiceCmHandle> previousQueryResult) {
final Collection<String> moduleNamesForQuery =
getModuleNamesForQuery(cmHandleQueryServiceParameters.getCmHandleQueryParameters());
if (moduleNamesForQuery.isEmpty()) {
return previousQueryResult;
}
final Collection<String> cmHandleIdsByModuleName = getNamesOfAnchorsWithGivenModules(moduleNamesForQuery);
if (cmHandleIdsByModuleName.isEmpty()) {
return Collections.emptyMap();
}
final Map<String, NcmpServiceCmHandle> queryResult = new HashMap<>(cmHandleIdsByModuleName.size());
if (previousQueryResult == NO_QUERY_TO_EXECUTE) {
cmHandleIdsByModuleName.forEach(cmHandleId ->
queryResult.put(cmHandleId, createNcmpServiceCmHandle(
inventoryPersistence.getDataNode("/dmi-registry/cm-handles[@id='" + cmHandleId + "']")))
);
return queryResult;
}
previousQueryResult.keySet().retainAll(cmHandleIdsByModuleName);
queryResult.putAll(previousQueryResult);
return queryResult;
}
private Map<String, NcmpServiceCmHandle> executeInventoryQueries(
final CmHandleQueryServiceParameters cmHandleQueryServiceParameters) {
final Map<String, String> cpsPath = getCpsPath(cmHandleQueryServiceParameters.getCmHandleQueryParameters());
if (!validateCpsPathConditionProperties(cpsPath)) {
return Collections.emptyMap();
}
final Map<String, NcmpServiceCmHandle> cpsPathQueryResult;
if (cpsPath.isEmpty()) {
cpsPathQueryResult = NO_QUERY_TO_EXECUTE;
} else {
try {
cpsPathQueryResult = cmHandleQueries.queryCmHandleDataNodesByCpsPath(
cpsPath.get("cpsPath"), INCLUDE_ALL_DESCENDANTS)
.stream().map(this::createNcmpServiceCmHandle)
.collect(Collectors.toMap(NcmpServiceCmHandle::getCmHandleId,
Function.identity()));
} catch (final PathParsingException pathParsingException) {
throw new DataValidationException(pathParsingException.getMessage(), pathParsingException.getDetails(),
pathParsingException);
}
if (cpsPathQueryResult.isEmpty()) {
return Collections.emptyMap();
}
}
final Map<String, String> publicPropertyQueryPairs =
getPublicPropertyPairs(cmHandleQueryServiceParameters.getCmHandleQueryParameters());
final Map<String, NcmpServiceCmHandle> propertiesQueryResult = publicPropertyQueryPairs.isEmpty()
? NO_QUERY_TO_EXECUTE : cmHandleQueries.queryCmHandlePublicProperties(publicPropertyQueryPairs);
return cmHandleQueries.combineCmHandleQueries(cpsPathQueryResult, propertiesQueryResult);
}
private Set<String> getNamesOfAnchorsWithGivenModules(final Collection<String> moduleNamesForQuery) {
final Collection<Anchor> anchors = inventoryPersistence.queryAnchors(moduleNamesForQuery);
return anchors.parallelStream().map(Anchor::getName).collect(Collectors.toSet());
}
private Collection<String> getModuleNamesForQuery(final List<ConditionProperties> conditionProperties) {
final List<String> result = new ArrayList<>();
getConditions(conditionProperties, ValidQueryProperties.HAS_ALL_MODULES.getQueryProperty())
.parallelStream().forEach(
conditionProperty -> {
validateModuleNameConditionProperties(conditionProperty);
result.add(conditionProperty.get("moduleName"));
}
);
return result;
}
private Map<String, String> getCpsPath(final List<ConditionProperties> conditionProperties) {
final Map<String, String> result = new HashMap<>();
getConditions(conditionProperties, ValidQueryProperties.WITH_CPS_PATH.getQueryProperty()).forEach(
result::putAll);
return result;
}
private Map<String, String> getPublicPropertyPairs(final List<ConditionProperties> conditionProperties) {
final Map<String, String> result = new HashMap<>();
getConditions(conditionProperties,
ValidQueryProperties.HAS_ALL_PROPERTIES.getQueryProperty()).forEach(result::putAll);
return result;
}
private List<Map<String, String>> getConditions(final List<ConditionProperties> conditionProperties,
final String name) {
for (final ConditionProperties conditionProperty : conditionProperties) {
if (conditionProperty.getConditionName().equals(name)) {
return conditionProperty.getConditionParameters();
}
}
return Collections.emptyList();
}
private Set<NcmpServiceCmHandle> getAllCmHandles() {
return inventoryPersistence.getDataNode("/dmi-registry")
.getChildDataNodes().stream().map(this::createNcmpServiceCmHandle).collect(Collectors.toSet());
}
private Set<String> getAllCmHandleIds() {
return inventoryPersistence.getDataNode("/dmi-registry", FETCH_DIRECT_CHILDREN_ONLY)
.getChildDataNodes().stream().map(dataNode -> dataNode.getLeaves().get("id").toString())
.collect(Collectors.toSet());
}
private NcmpServiceCmHandle createNcmpServiceCmHandle(final DataNode dataNode) {
return convertYangModelCmHandleToNcmpServiceCmHandle(YangDataConverter
.convertCmHandleToYangModel(dataNode, dataNode.getLeaves().get("id").toString()));
}
}
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