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  *  Modifications Copyright (C) 2022 TechMahindra Ltd.
   7  *  ================================================================================
   8  *  Licensed under the Apache License, Version 2.0 (the "License");
   9  *  you may not use this file except in compliance with the License.
  10  *  You may obtain a copy of the License at
  11  *
  12  *        http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  *  Unless required by applicable law or agreed to in writing, software
  15  *  distributed under the License is distributed on an "AS IS" BASIS,
  16  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  *  See the License for the specific language governing permissions and
  18  *  limitations under the License.
  19  *
  20  *  SPDX-License-Identifier: Apache-2.0
  21  *  ============LICENSE_END=========================================================
  22  */
  23
  24 package org.onap.cps.spi.impl;
  25
  26 import static com.google.common.base.Preconditions.checkNotNull;
  27
  28 import com.google.common.base.MoreObjects;
  29 import com.google.common.collect.ImmutableSet;
  30 import java.io.ByteArrayInputStream;
  31 import java.io.IOException;
  32 import java.io.InputStream;
  33 import java.nio.charset.StandardCharsets;
  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.RequiredArgsConstructor;
  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.DataspaceEntity;
  51 import org.onap.cps.spi.entities.SchemaSetEntity;
  52 import org.onap.cps.spi.entities.YangResourceEntity;
  53 import org.onap.cps.spi.entities.YangResourceModuleReference;
  54 import org.onap.cps.spi.exceptions.AlreadyDefinedException;
  55 import org.onap.cps.spi.exceptions.DuplicatedYangResourceException;
  56 import org.onap.cps.spi.exceptions.ModelValidationException;
  57 import org.onap.cps.spi.model.ModuleDefinition;
  58 import org.onap.cps.spi.model.ModuleReference;
  59 import org.onap.cps.spi.model.SchemaSet;
  60 import org.onap.cps.spi.repository.DataspaceRepository;
  61 import org.onap.cps.spi.repository.ModuleReferenceRepository;
  62 import org.onap.cps.spi.repository.SchemaSetRepository;
  63 import org.onap.cps.spi.repository.YangResourceRepository;
  64 import org.opendaylight.yangtools.yang.common.Revision;
  65 import org.opendaylight.yangtools.yang.model.repo.api.RevisionSourceIdentifier;
  66 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
  67 import org.opendaylight.yangtools.yang.parser.api.YangSyntaxErrorException;
  68 import org.opendaylight.yangtools.yang.parser.rfc7950.repo.YangModelDependencyInfo;
  69 import org.springframework.dao.DataIntegrityViolationException;
  70 import org.springframework.retry.annotation.Backoff;
  71 import org.springframework.retry.annotation.Retryable;
  72 import org.springframework.retry.support.RetrySynchronizationManager;
  73 import org.springframework.stereotype.Component;
  74
  75 @Slf4j
  76 @Component
  77 @RequiredArgsConstructor
  78 public class CpsModulePersistenceServiceImpl implements CpsModulePersistenceService {
  79
  80     private static final String YANG_RESOURCE_CHECKSUM_CONSTRAINT_NAME = "yang_resource_checksum_key";
  81     private static final Pattern CHECKSUM_EXCEPTION_PATTERN = Pattern.compile(".*\\(checksum\\)=\\((\\w+)\\).*");
  82     private static final Pattern RFC6020_RECOMMENDED_FILENAME_PATTERN = Pattern
  83             .compile("([\\w-]+)@(\\d{4}-\\d{2}-\\d{2})(?:\\.yang)?", Pattern.CASE_INSENSITIVE);
  84
  85     private final YangResourceRepository yangResourceRepository;
  86
  87     private final SchemaSetRepository schemaSetRepository;
  88
  89     private final DataspaceRepository dataspaceRepository;
  90
  91     private final CpsAdminPersistenceService cpsAdminPersistenceService;
  92
  93     private final ModuleReferenceRepository moduleReferenceRepository;
  94
  95     @Override
  96     public Map<String, String> getYangSchemaResources(final String dataspaceName, final String schemaSetName) {
  97         final var dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
  98         final var schemaSetEntity =
  99             schemaSetRepository.getByDataspaceAndName(dataspaceEntity, schemaSetName);
 100         return schemaSetEntity.getYangResources().stream().collect(
 101             Collectors.toMap(YangResourceEntity::getFileName, YangResourceEntity::getContent));
 102     }
 103
 104     @Override
 105     public Map<String, String> getYangSchemaSetResources(final String dataspaceName, final String anchorName) {
 106         final var anchor = cpsAdminPersistenceService.getAnchor(dataspaceName, anchorName);
 107         return getYangSchemaResources(dataspaceName, anchor.getSchemaSetName());
 108     }
 109
 110     @Override
 111     public Collection<ModuleReference> getYangResourceModuleReferences(final String dataspaceName) {
 112         final Set<YangResourceModuleReference> yangResourceModuleReferenceList =
 113             yangResourceRepository.findAllModuleReferencesByDataspace(dataspaceName);
 114         return yangResourceModuleReferenceList.stream().map(CpsModulePersistenceServiceImpl::toModuleReference)
 115             .collect(Collectors.toList());
 116     }
 117
 118     @Override
 119     public Collection<ModuleReference> getYangResourceModuleReferences(final String dataspaceName,
 120                                                                        final String anchorName) {
 121         final Set<YangResourceModuleReference> yangResourceModuleReferenceList =
 122                 yangResourceRepository
 123                         .findAllModuleReferencesByDataspaceAndAnchor(dataspaceName, anchorName);
 124         return yangResourceModuleReferenceList.stream().map(CpsModulePersistenceServiceImpl::toModuleReference)
 125                 .collect(Collectors.toList());
 126     }
 127
 128     @Override
 129     public Collection<ModuleDefinition> getYangResourceDefinitions(final String dataspaceName,
 130                                                                    final String anchorName) {
 131         final Set<YangResourceEntity> yangResourceEntities =
 132                 yangResourceRepository
 133                         .findAllModuleDefinitionsByDataspaceAndAnchor(dataspaceName, anchorName);
 134         return yangResourceEntities.stream().map(CpsModulePersistenceServiceImpl::toModuleDefinition)
 135                 .collect(Collectors.toList());
 136     }
 137
 138     @Override
 139     @Transactional
 140     // A retry is made to store the schema set if it fails because of duplicated yang resource exception that
 141     // can occur in case of specific concurrent requests.
 142     @Retryable(value = DuplicatedYangResourceException.class, maxAttempts = 5, backoff =
 143         @Backoff(random = true, delay = 200, maxDelay = 2000, multiplier = 2))
 144     public void storeSchemaSet(final String dataspaceName, final String schemaSetName,
 145         final Map<String, String> moduleReferenceNameToContentMap) {
 146         final var dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
 147         final var yangResourceEntities = synchronizeYangResources(moduleReferenceNameToContentMap);
 148         final var schemaSetEntity = new SchemaSetEntity();
 149         schemaSetEntity.setName(schemaSetName);
 150         schemaSetEntity.setDataspace(dataspaceEntity);
 151         schemaSetEntity.setYangResources(yangResourceEntities);
 152         try {
 153             schemaSetRepository.save(schemaSetEntity);
 154         } catch (final DataIntegrityViolationException e) {
 155             throw AlreadyDefinedException.forSchemaSet(schemaSetName, dataspaceName, e);
 156         }
 157     }
 158
 159     @Override
 160     public Collection<SchemaSet> getSchemaSetsByDataspaceName(final String dataspaceName) {
 161         final DataspaceEntity dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
 162         final List<SchemaSetEntity> schemaSetEntities = schemaSetRepository.getByDataspace(dataspaceEntity);
 163         return schemaSetEntities.stream()
 164                 .map(CpsModulePersistenceServiceImpl::toSchemaSet).collect(Collectors.toList());
 165     }
 166
 167     @Override
 168     @Transactional
 169     // A retry is made to store the schema set if it fails because of duplicated yang resource exception that
 170     // can occur in case of specific concurrent requests.
 171     @Retryable(value = DuplicatedYangResourceException.class, maxAttempts = 5, backoff =
 172         @Backoff(random = true, delay = 200, maxDelay = 2000, multiplier = 2))
 173     public void storeSchemaSetFromModules(final String dataspaceName, final String schemaSetName,
 174                                           final Map<String, String> newModuleNameToContentMap,
 175                                           final Collection<ModuleReference> allModuleReferences) {
 176         storeSchemaSet(dataspaceName, schemaSetName, newModuleNameToContentMap);
 177         final DataspaceEntity dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
 178         final SchemaSetEntity schemaSetEntity =
 179                 schemaSetRepository.getByDataspaceAndName(dataspaceEntity, schemaSetName);
 180         final List<Long> allYangResourceIds =
 181             yangResourceRepository.getResourceIdsByModuleReferences(allModuleReferences);
 182         yangResourceRepository.insertSchemaSetIdYangResourceId(schemaSetEntity.getId(), allYangResourceIds);
 183     }
 184
 185     @Override
 186     @Transactional
 187     public void deleteSchemaSet(final String dataspaceName, final String schemaSetName) {
 188         final var dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
 189         final var schemaSetEntity =
 190             schemaSetRepository.getByDataspaceAndName(dataspaceEntity, schemaSetName);
 191         schemaSetRepository.delete(schemaSetEntity);
 192     }
 193
 194     @Override
 195     @Transactional
 196     public void deleteUnusedYangResourceModules() {
 197         yangResourceRepository.deleteOrphans();
 198     }
 199
 200     @Override
 201     public Collection<ModuleReference> identifyNewModuleReferences(
 202         final Collection<ModuleReference> moduleReferencesToCheck) {
 203         return moduleReferenceRepository.identifyNewModuleReferences(moduleReferencesToCheck);
 204     }
 205
 206     private Set<YangResourceEntity> synchronizeYangResources(
 207         final Map<String, String> moduleReferenceNameToContentMap) {
 208         final Map<String, YangResourceEntity> checksumToEntityMap = moduleReferenceNameToContentMap.entrySet().stream()
 209             .map(entry -> {
 210                 final String checksum = DigestUtils.sha256Hex(entry.getValue().getBytes(StandardCharsets.UTF_8));
 211                 final Map<String, String> moduleNameAndRevisionMap = createModuleNameAndRevisionMap(entry.getKey(),
 212                             entry.getValue());
 213                 final var yangResourceEntity = new YangResourceEntity();
 214                 yangResourceEntity.setFileName(entry.getKey());
 215                 yangResourceEntity.setContent(entry.getValue());
 216                 yangResourceEntity.setModuleName(moduleNameAndRevisionMap.get("moduleName"));
 217                 yangResourceEntity.setRevision(moduleNameAndRevisionMap.get("revision"));
 218                 yangResourceEntity.setChecksum(checksum);
 219                 return yangResourceEntity;
 220             })
 221             .collect(Collectors.toMap(
 222                 YangResourceEntity::getChecksum,
 223                 entity -> entity
 224             ));
 225
 226         final List<YangResourceEntity> existingYangResourceEntities =
 227             yangResourceRepository.findAllByChecksumIn(checksumToEntityMap.keySet());
 228         existingYangResourceEntities.forEach(yangFile -> checksumToEntityMap.remove(yangFile.getChecksum()));
 229
 230         final Collection<YangResourceEntity> newYangResourceEntities = checksumToEntityMap.values();
 231         if (!newYangResourceEntities.isEmpty()) {
 232             try {
 233                 yangResourceRepository.saveAll(newYangResourceEntities);
 234             } catch (final DataIntegrityViolationException dataIntegrityViolationException) {
 235                 // Throw a CPS duplicated Yang resource exception if the cause of the error is a yang checksum
 236                 // database constraint violation.
 237                 // If it is not, then throw the original exception
 238                 final Optional<DuplicatedYangResourceException> convertedException =
 239                         convertToDuplicatedYangResourceException(
 240                                 dataIntegrityViolationException, newYangResourceEntities);
 241                 convertedException.ifPresent(
 242                         e -> {
 243                             int retryCount = RetrySynchronizationManager.getContext() == null ? 0
 244                                     : RetrySynchronizationManager.getContext().getRetryCount();
 245                             log.warn("Cannot persist duplicated yang resource. System will attempt this method "
 246                                     + "up to 5 times. Current retry count : {}", ++retryCount, e);
 247                         });
 248                 throw convertedException.isPresent() ? convertedException.get() : dataIntegrityViolationException;
 249             }
 250         }
 251
 252         return ImmutableSet.<YangResourceEntity>builder()
 253             .addAll(existingYangResourceEntities)
 254             .addAll(newYangResourceEntities)
 255             .build();
 256     }
 257
 258     private static Map<String, String> createModuleNameAndRevisionMap(final String sourceName, final String source) {
 259         final Map<String, String> metaDataMap = new HashMap<>();
 260         final var revisionSourceIdentifier =
 261                 createIdentifierFromSourceName(checkNotNull(sourceName));
 262
 263         final var tempYangTextSchemaSource = new YangTextSchemaSource(revisionSourceIdentifier) {
 264             @Override
 265             public Optional<String> getSymbolicName() {
 266                 return Optional.empty();
 267             }
 268
 269             @Override
 270             protected MoreObjects.ToStringHelper addToStringAttributes(
 271                     final MoreObjects.ToStringHelper toStringHelper) {
 272                 return toStringHelper;
 273             }
 274
 275             @Override
 276             public InputStream openStream() {
 277                 return new ByteArrayInputStream(source.getBytes(StandardCharsets.UTF_8));
 278             }
 279         };
 280         try {
 281             final var dependencyInfo = YangModelDependencyInfo.forYangText(tempYangTextSchemaSource);
 282             metaDataMap.put("moduleName", dependencyInfo.getName());
 283             metaDataMap.put("revision", dependencyInfo.getFormattedRevision());
 284         } catch (final YangSyntaxErrorException | IOException e) {
 285             throw new ModelValidationException("Yang resource is invalid.",
 286                    String.format("Yang syntax validation failed for resource %s:%n%s", sourceName, e.getMessage()), e);
 287         }
 288         return metaDataMap;
 289     }
 290
 291     private static RevisionSourceIdentifier createIdentifierFromSourceName(final String sourceName) {
 292         final var matcher = RFC6020_RECOMMENDED_FILENAME_PATTERN.matcher(sourceName);
 293         if (matcher.matches()) {
 294             return RevisionSourceIdentifier.create(matcher.group(1), Revision.of(matcher.group(2)));
 295         }
 296         return RevisionSourceIdentifier.create(sourceName);
 297     }
 298
 299     /**
 300      * Convert the specified data integrity violation exception into a CPS duplicated Yang resource exception
 301      * if the cause of the error is a yang checksum database constraint violation.
 302      *
 303      * @param originalException the original db exception.
 304      * @param yangResourceEntities the collection of Yang resources involved in the db failure.
 305      * @return an optional converted CPS duplicated Yang resource exception. The optional is empty if the original
 306      *      cause of the error is not a yang checksum database constraint violation.
 307      */
 308     private Optional<DuplicatedYangResourceException> convertToDuplicatedYangResourceException(
 309             final DataIntegrityViolationException originalException,
 310             final Collection<YangResourceEntity> yangResourceEntities) {
 311
 312         // The exception result
 313         DuplicatedYangResourceException duplicatedYangResourceException = null;
 314
 315         final Throwable cause = originalException.getCause();
 316         if (cause instanceof ConstraintViolationException) {
 317             final ConstraintViolationException constraintException = (ConstraintViolationException) cause;
 318             if (YANG_RESOURCE_CHECKSUM_CONSTRAINT_NAME.equals(constraintException.getConstraintName())) {
 319                 // Db constraint related to yang resource checksum uniqueness is not respected
 320                 final String checksumInError = getDuplicatedChecksumFromException(constraintException);
 321                 final String nameInError = getNameForChecksum(checksumInError, yangResourceEntities);
 322                 duplicatedYangResourceException =
 323                         new DuplicatedYangResourceException(nameInError, checksumInError, constraintException);
 324             }
 325         }
 326
 327         return Optional.ofNullable(duplicatedYangResourceException);
 328
 329     }
 330
 331     /**
 332      * Get the name of the yang resource having the specified checksum.
 333      *
 334      * @param checksum the checksum. Null is supported.
 335      * @param yangResourceEntities the list of yang resources to search among.
 336      * @return the name found or null if none.
 337      */
 338     private String getNameForChecksum(
 339             final String checksum, final Collection<YangResourceEntity> yangResourceEntities) {
 340         final Optional<String> optionalFileName = yangResourceEntities.stream()
 341                         .filter(entity -> StringUtils.equals(checksum, (entity.getChecksum())))
 342                         .findFirst()
 343                         .map(YangResourceEntity::getFileName);
 344         if (optionalFileName.isPresent()) {
 345             return optionalFileName.get();
 346         }
 347         return null;
 348     }
 349
 350     /**
 351      * Get the checksum that caused the constraint violation exception.
 352      *
 353      * @param exception the exception having the checksum in error.
 354      * @return the checksum in error or null if not found.
 355      */
 356     private String getDuplicatedChecksumFromException(final ConstraintViolationException exception) {
 357         String checksum = null;
 358         final var matcher = CHECKSUM_EXCEPTION_PATTERN.matcher(exception.getSQLException().getMessage());
 359         if (matcher.find() && matcher.groupCount() == 1) {
 360             checksum = matcher.group(1);
 361         }
 362         return checksum;
 363     }
 364
 365     private static ModuleReference toModuleReference(
 366         final YangResourceModuleReference yangResourceModuleReference) {
 367         return ModuleReference.builder()
 368             .moduleName(yangResourceModuleReference.getModuleName())
 369             .revision(yangResourceModuleReference.getRevision())
 370             .build();
 371     }
 372
 373     private static ModuleDefinition toModuleDefinition(final YangResourceEntity yangResourceEntity) {
 374         return new ModuleDefinition(
 375                 yangResourceEntity.getModuleName(),
 376                 yangResourceEntity.getRevision(),
 377                 yangResourceEntity.getContent());
 378     }
 379
 380     private static SchemaSet toSchemaSet(final SchemaSetEntity schemaSetEntity) {
 381         return SchemaSet.builder().name(schemaSetEntity.getName())
 382                 .dataspaceName(schemaSetEntity.getDataspace().getName()).build();
 383     }
 384 }