cps-ri/src/main/java/org/onap/cps/spi/impl/CpsModulePersistenceServiceImpl.java

   1 /*
   2  *  ============LICENSE_START=======================================================
   3  *  Copyright (C) 2020-2022 Nordix Foundation
   4  *  Modifications Copyright (C) 2020-2022 Bell Canada.
   5  *  Modifications Copyright (C) 2021 Pantheon.tech
   6  *  ================================================================================
   7  *  Licensed under the Apache License, Version 2.0 (the "License");
   8  *  you may not use this file except in compliance with the License.
   9  *  You may obtain a copy of the License at
  10  *
  11  *        http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  *  Unless required by applicable law or agreed to in writing, software
  14  *  distributed under the License is distributed on an "AS IS" BASIS,
  15  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  *  See the License for the specific language governing permissions and
  17  *  limitations under the License.
  18  *
  19  *  SPDX-License-Identifier: Apache-2.0
  20  *  ============LICENSE_END=========================================================
  21  */
  22
  23 package org.onap.cps.spi.impl;
  24
  25 import static com.google.common.base.Preconditions.checkNotNull;
  26
  27 import com.google.common.base.MoreObjects;
  28 import com.google.common.collect.ImmutableSet;
  29 import java.io.ByteArrayInputStream;
  30 import java.io.IOException;
  31 import java.io.InputStream;
  32 import java.nio.charset.StandardCharsets;
  33 import java.util.ArrayList;
  34 import java.util.Collection;
  35 import java.util.HashMap;
  36 import java.util.List;
  37 import java.util.Map;
  38 import java.util.Optional;
  39 import java.util.Set;
  40 import java.util.regex.Pattern;
  41 import java.util.stream.Collectors;
  42 import javax.transaction.Transactional;
  43 import lombok.AllArgsConstructor;
  44 import lombok.extern.slf4j.Slf4j;
  45 import org.apache.commons.codec.digest.DigestUtils;
  46 import org.apache.commons.lang3.StringUtils;
  47 import org.hibernate.exception.ConstraintViolationException;
  48 import org.onap.cps.spi.CpsAdminPersistenceService;
  49 import org.onap.cps.spi.CpsModulePersistenceService;
  50 import org.onap.cps.spi.entities.SchemaSetEntity;
  51 import org.onap.cps.spi.entities.YangResourceEntity;
  52 import org.onap.cps.spi.entities.YangResourceModuleReference;
  53 import org.onap.cps.spi.exceptions.AlreadyDefinedException;
  54 import org.onap.cps.spi.exceptions.DuplicatedYangResourceException;
  55 import org.onap.cps.spi.exceptions.ModelValidationException;
  56 import org.onap.cps.spi.model.ModuleDefinition;
  57 import org.onap.cps.spi.model.ModuleReference;
  58 import org.onap.cps.spi.repository.DataspaceRepository;
  59 import org.onap.cps.spi.repository.ModuleReferenceRepository;
  60 import org.onap.cps.spi.repository.SchemaSetRepository;
  61 import org.onap.cps.spi.repository.YangResourceRepository;
  62 import org.opendaylight.yangtools.yang.common.Revision;
  63 import org.opendaylight.yangtools.yang.model.parser.api.YangSyntaxErrorException;
  64 import org.opendaylight.yangtools.yang.model.repo.api.RevisionSourceIdentifier;
  65 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
  66 import org.opendaylight.yangtools.yang.parser.rfc7950.repo.YangModelDependencyInfo;
  67 import org.springframework.dao.DataIntegrityViolationException;
  68 import org.springframework.retry.annotation.Backoff;
  69 import org.springframework.retry.annotation.Retryable;
  70 import org.springframework.retry.support.RetrySynchronizationManager;
  71 import org.springframework.stereotype.Component;
  72
  73 @Slf4j
  74 @Component
  75 @AllArgsConstructor
  76 public class CpsModulePersistenceServiceImpl implements CpsModulePersistenceService {
  77
  78     private static final String YANG_RESOURCE_CHECKSUM_CONSTRAINT_NAME = "yang_resource_checksum_key";
  79     private static final Pattern CHECKSUM_EXCEPTION_PATTERN = Pattern.compile(".*\\(checksum\\)=\\((\\w+)\\).*");
  80     private static final Pattern RFC6020_RECOMMENDED_FILENAME_PATTERN = Pattern
  81             .compile("([\\w-]+)@(\\d{4}-\\d{2}-\\d{2})(?:\\.yang)?", Pattern.CASE_INSENSITIVE);
  82
  83     private YangResourceRepository yangResourceRepository;
  84
  85     private SchemaSetRepository schemaSetRepository;
  86
  87     private DataspaceRepository dataspaceRepository;
  88
  89     private CpsAdminPersistenceService cpsAdminPersistenceService;
  90
  91     private ModuleReferenceRepository moduleReferenceRepository;
  92
  93     @Override
  94     public Map<String, String> getYangSchemaResources(final String dataspaceName, final String schemaSetName) {
  95         final var dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
  96         final var schemaSetEntity =
  97             schemaSetRepository.getByDataspaceAndName(dataspaceEntity, schemaSetName);
  98         return schemaSetEntity.getYangResources().stream().collect(
  99             Collectors.toMap(YangResourceEntity::getName, YangResourceEntity::getContent));
 100     }
 101
 102     @Override
 103     public Map<String, String> getYangSchemaSetResources(final String dataspaceName, final String anchorName) {
 104         final var anchor = cpsAdminPersistenceService.getAnchor(dataspaceName, anchorName);
 105         return getYangSchemaResources(dataspaceName, anchor.getSchemaSetName());
 106     }
 107
 108     @Override
 109     public Collection<ModuleReference> getYangResourceModuleReferences(final String dataspaceName) {
 110         final Set<YangResourceModuleReference> yangResourceModuleReferenceList =
 111             yangResourceRepository.findAllModuleReferencesByDataspace(dataspaceName);
 112         return yangResourceModuleReferenceList.stream().map(CpsModulePersistenceServiceImpl::toModuleReference)
 113             .collect(Collectors.toList());
 114     }
 115
 116     @Override
 117     public Collection<ModuleReference> getYangResourceModuleReferences(final String dataspaceName,
 118                                                                        final String anchorName) {
 119         final Set<YangResourceModuleReference> yangResourceModuleReferenceList =
 120                 yangResourceRepository
 121                         .findAllModuleReferencesByDataspaceAndAnchor(dataspaceName, anchorName);
 122         return yangResourceModuleReferenceList.stream().map(CpsModulePersistenceServiceImpl::toModuleReference)
 123                 .collect(Collectors.toList());
 124     }
 125
 126     @Override
 127     public Collection<ModuleDefinition> getYangResourceDefinitions(final String dataspaceName,
 128                                                                    final String anchorName) {
 129         final Set<YangResourceEntity> yangResourceEntities =
 130                 yangResourceRepository
 131                         .findAllModuleDefinitionsByDataspaceAndAnchor(dataspaceName, anchorName);
 132         return yangResourceEntities.stream().map(CpsModulePersistenceServiceImpl::toModuleDefinition)
 133                 .collect(Collectors.toList());
 134     }
 135
 136     @Override
 137     @Transactional
 138     // A retry is made to store the schema set if it fails because of duplicated yang resource exception that
 139     // can occur in case of specific concurrent requests.
 140     @Retryable(value = DuplicatedYangResourceException.class, maxAttempts = 5, backoff =
 141         @Backoff(random = true, delay = 200, maxDelay = 2000, multiplier = 2))
 142     public void storeSchemaSet(final String dataspaceName, final String schemaSetName,
 143         final Map<String, String> moduleReferenceNameToContentMap) {
 144         final var dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
 145         final var yangResourceEntities = synchronizeYangResources(moduleReferenceNameToContentMap);
 146         final var schemaSetEntity = new SchemaSetEntity();
 147         schemaSetEntity.setName(schemaSetName);
 148         schemaSetEntity.setDataspace(dataspaceEntity);
 149         schemaSetEntity.setYangResources(yangResourceEntities);
 150         try {
 151             schemaSetRepository.save(schemaSetEntity);
 152         } catch (final DataIntegrityViolationException e) {
 153             throw AlreadyDefinedException.forSchemaSet(schemaSetName, dataspaceName, e);
 154         }
 155     }
 156
 157     @Override
 158     @Transactional
 159     // A retry is made to store the schema set if it fails because of duplicated yang resource exception that
 160     // can occur in case of specific concurrent requests.
 161     @Retryable(value = DuplicatedYangResourceException.class, maxAttempts = 5, backoff =
 162         @Backoff(random = true, delay = 200, maxDelay = 2000, multiplier = 2))
 163     public void storeSchemaSetFromModules(final String dataspaceName, final String schemaSetName,
 164                                           final Map<String, String> newModuleNameToContentMap,
 165                                           final Collection<ModuleReference> moduleReferences) {
 166         storeSchemaSet(dataspaceName, schemaSetName, newModuleNameToContentMap);
 167         final var dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
 168         final var schemaSetEntity =
 169                 schemaSetRepository.getByDataspaceAndName(dataspaceEntity, schemaSetName);
 170         final List<Long> listOfYangResourceIds = new ArrayList<>();
 171         moduleReferences.forEach(moduleReference ->
 172                 listOfYangResourceIds.add(yangResourceRepository.getIdByModuleNameAndRevision(
 173                         moduleReference.getModuleName(), moduleReference.getRevision())));
 174         yangResourceRepository.insertSchemaSetIdYangResourceId(schemaSetEntity.getId(), listOfYangResourceIds);
 175     }
 176
 177     @Override
 178     @Transactional
 179     public void deleteSchemaSet(final String dataspaceName, final String schemaSetName) {
 180         final var dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
 181         final var schemaSetEntity =
 182             schemaSetRepository.getByDataspaceAndName(dataspaceEntity, schemaSetName);
 183         schemaSetRepository.delete(schemaSetEntity);
 184     }
 185
 186     @Override
 187     @Transactional
 188     public void deleteUnusedYangResourceModules() {
 189         yangResourceRepository.deleteOrphans();
 190     }
 191
 192     @Override
 193     public Collection<ModuleReference> identifyNewModuleReferences(
 194         final Collection<ModuleReference> moduleReferencesToCheck) {
 195         return moduleReferenceRepository.identifyNewModuleReferences(moduleReferencesToCheck);
 196     }
 197
 198     private Set<YangResourceEntity> synchronizeYangResources(
 199         final Map<String, String> moduleReferenceNameToContentMap) {
 200         final Map<String, YangResourceEntity> checksumToEntityMap = moduleReferenceNameToContentMap.entrySet().stream()
 201             .map(entry -> {
 202                 final String checksum = DigestUtils.sha256Hex(entry.getValue().getBytes(StandardCharsets.UTF_8));
 203                 final Map<String, String> moduleNameAndRevisionMap = createModuleNameAndRevisionMap(entry.getKey(),
 204                             entry.getValue());
 205                 final var yangResourceEntity = new YangResourceEntity();
 206                 yangResourceEntity.setName(entry.getKey());
 207                 yangResourceEntity.setContent(entry.getValue());
 208                 yangResourceEntity.setModuleName(moduleNameAndRevisionMap.get("moduleName"));
 209                 yangResourceEntity.setRevision(moduleNameAndRevisionMap.get("revision"));
 210                 yangResourceEntity.setChecksum(checksum);
 211                 return yangResourceEntity;
 212             })
 213             .collect(Collectors.toMap(
 214                 YangResourceEntity::getChecksum,
 215                 entity -> entity
 216             ));
 217
 218         final List<YangResourceEntity> existingYangResourceEntities =
 219             yangResourceRepository.findAllByChecksumIn(checksumToEntityMap.keySet());
 220         existingYangResourceEntities.forEach(yangFile -> checksumToEntityMap.remove(yangFile.getChecksum()));
 221
 222         final Collection<YangResourceEntity> newYangResourceEntities = checksumToEntityMap.values();
 223         if (!newYangResourceEntities.isEmpty()) {
 224             try {
 225                 yangResourceRepository.saveAll(newYangResourceEntities);
 226             } catch (final DataIntegrityViolationException dataIntegrityViolationException) {
 227                 // Throw a CPS duplicated Yang resource exception if the cause of the error is a yang checksum
 228                 // database constraint violation.
 229                 // If it is not, then throw the original exception
 230                 final Optional<DuplicatedYangResourceException> convertedException =
 231                         convertToDuplicatedYangResourceException(
 232                                 dataIntegrityViolationException, newYangResourceEntities);
 233                 convertedException.ifPresent(
 234                         e -> {
 235                             int retryCount = RetrySynchronizationManager.getContext() == null ? 0
 236                                     : RetrySynchronizationManager.getContext().getRetryCount();
 237                             log.warn("Cannot persist duplicated yang resource. System will attempt this method "
 238                                     + "up to 5 times. Current retry count : {}", ++retryCount, e);
 239                         });
 240                 throw convertedException.isPresent() ? convertedException.get() : dataIntegrityViolationException;
 241             }
 242         }
 243
 244         return ImmutableSet.<YangResourceEntity>builder()
 245             .addAll(existingYangResourceEntities)
 246             .addAll(newYangResourceEntities)
 247             .build();
 248     }
 249
 250     private static Map<String, String> createModuleNameAndRevisionMap(final String sourceName, final String source) {
 251         final Map<String, String> metaDataMap = new HashMap<>();
 252         final var revisionSourceIdentifier =
 253                 createIdentifierFromSourceName(checkNotNull(sourceName));
 254
 255         final var tempYangTextSchemaSource = new YangTextSchemaSource(revisionSourceIdentifier) {
 256             @Override
 257             protected MoreObjects.ToStringHelper addToStringAttributes(
 258                     final MoreObjects.ToStringHelper toStringHelper) {
 259                 return toStringHelper;
 260             }
 261
 262             @Override
 263             public InputStream openStream() {
 264                 return new ByteArrayInputStream(source.getBytes(StandardCharsets.UTF_8));
 265             }
 266         };
 267         try {
 268             final var dependencyInfo = YangModelDependencyInfo.forYangText(tempYangTextSchemaSource);
 269             metaDataMap.put("moduleName", dependencyInfo.getName());
 270             metaDataMap.put("revision", dependencyInfo.getFormattedRevision());
 271         } catch (final YangSyntaxErrorException | IOException e) {
 272             throw new ModelValidationException("Yang resource is invalid.",
 273                    String.format("Yang syntax validation failed for resource %s:%n%s", sourceName, e.getMessage()), e);
 274         }
 275         return metaDataMap;
 276     }
 277
 278     private static RevisionSourceIdentifier createIdentifierFromSourceName(final String sourceName) {
 279         final var matcher = RFC6020_RECOMMENDED_FILENAME_PATTERN.matcher(sourceName);
 280         if (matcher.matches()) {
 281             return RevisionSourceIdentifier.create(matcher.group(1), Revision.of(matcher.group(2)));
 282         }
 283         return RevisionSourceIdentifier.create(sourceName);
 284     }
 285
 286     /**
 287      * Convert the specified data integrity violation exception into a CPS duplicated Yang resource exception
 288      * if the cause of the error is a yang checksum database constraint violation.
 289      *
 290      * @param originalException the original db exception.
 291      * @param yangResourceEntities the collection of Yang resources involved in the db failure.
 292      * @return an optional converted CPS duplicated Yang resource exception. The optional is empty if the original
 293      *      cause of the error is not a yang checksum database constraint violation.
 294      */
 295     private Optional<DuplicatedYangResourceException> convertToDuplicatedYangResourceException(
 296             final DataIntegrityViolationException originalException,
 297             final Collection<YangResourceEntity> yangResourceEntities) {
 298
 299         // The exception result
 300         DuplicatedYangResourceException duplicatedYangResourceException = null;
 301
 302         final Throwable cause = originalException.getCause();
 303         if (cause instanceof ConstraintViolationException) {
 304             final ConstraintViolationException constraintException = (ConstraintViolationException) cause;
 305             if (YANG_RESOURCE_CHECKSUM_CONSTRAINT_NAME.equals(constraintException.getConstraintName())) {
 306                 // Db constraint related to yang resource checksum uniqueness is not respected
 307                 final String checksumInError = getDuplicatedChecksumFromException(constraintException);
 308                 final String nameInError = getNameForChecksum(checksumInError, yangResourceEntities);
 309                 duplicatedYangResourceException =
 310                         new DuplicatedYangResourceException(nameInError, checksumInError, constraintException);
 311             }
 312         }
 313
 314         return Optional.ofNullable(duplicatedYangResourceException);
 315
 316     }
 317
 318     /**
 319      * Get the name of the yang resource having the specified checksum.
 320      *
 321      * @param checksum the checksum. Null is supported.
 322      * @param yangResourceEntities the list of yang resources to search among.
 323      * @return the name found or null if none.
 324      */
 325     private String getNameForChecksum(
 326             final String checksum, final Collection<YangResourceEntity> yangResourceEntities) {
 327         return
 328                 yangResourceEntities.stream()
 329                         .filter(entity -> StringUtils.equals(checksum, (entity.getChecksum())))
 330                         .findFirst()
 331                         .map(YangResourceEntity::getName)
 332                         .orElse(null);
 333     }
 334
 335     /**
 336      * Get the checksum that caused the constraint violation exception.
 337      *
 338      * @param exception the exception having the checksum in error.
 339      * @return the checksum in error or null if not found.
 340      */
 341     private String getDuplicatedChecksumFromException(final ConstraintViolationException exception) {
 342         String checksum = null;
 343         final var matcher = CHECKSUM_EXCEPTION_PATTERN.matcher(exception.getSQLException().getMessage());
 344         if (matcher.find() && matcher.groupCount() == 1) {
 345             checksum = matcher.group(1);
 346         }
 347         return checksum;
 348     }
 349
 350     private static ModuleReference toModuleReference(
 351         final YangResourceModuleReference yangResourceModuleReference) {
 352         return ModuleReference.builder()
 353             .moduleName(yangResourceModuleReference.getModuleName())
 354             .revision(yangResourceModuleReference.getRevision())
 355             .build();
 356     }
 357
 358     private static ModuleDefinition toModuleDefinition(final YangResourceEntity yangResourceEntity) {
 359         return new ModuleDefinition(
 360                 yangResourceEntity.getModuleName(),
 361                 yangResourceEntity.getRevision(),
 362                 yangResourceEntity.getContent());
 363     }
 364 }