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authorBruno Sakoto <bruno.sakoto@bell.ca>2021-06-16 11:47:54 -0400
committerBruno Sakoto <bruno.sakoto@bell.ca>2021-07-09 11:38:55 -0400
commit9be188dd7a5d0507a94e2ce321d3f3390d195a4e (patch)
treea32384b24faeece4cacf130560b766218c0082d5 /cps-ri/src/main/java/org
parent0190d0246ab18311fe12cdebb808d9f6e4b131c1 (diff)
Support concurrent requests to create schema sets
Issue-ID: CPS-466 Signed-off-by: Bruno Sakoto <bruno.sakoto@bell.ca> Change-Id: I2ecf98b9aa5a6097518e616c08f8bb2a2182a613
Diffstat (limited to 'cps-ri/src/main/java/org')
-rwxr-xr-xcps-ri/src/main/java/org/onap/cps/spi/impl/CpsModulePersistenceServiceImpl.java95
1 files changed, 93 insertions, 2 deletions
diff --git a/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsModulePersistenceServiceImpl.java b/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsModulePersistenceServiceImpl.java
index ae6543dabe..eae1ef1423 100755
--- a/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsModulePersistenceServiceImpl.java
+++ b/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsModulePersistenceServiceImpl.java
@@ -1,7 +1,7 @@
/*
* ============LICENSE_START=======================================================
* Copyright (C) 2020 Nordix Foundation
- * Modifications Copyright (C) 2020 Bell Canada. All rights reserved.
+ * Modifications Copyright (C) 2020-2021 Bell Canada.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -25,10 +25,16 @@ import java.nio.charset.StandardCharsets;
import java.util.Collection;
import java.util.List;
import java.util.Map;
+import java.util.Optional;
import java.util.Set;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
import java.util.stream.Collectors;
import javax.transaction.Transactional;
+import lombok.extern.slf4j.Slf4j;
import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.hibernate.exception.ConstraintViolationException;
import org.onap.cps.spi.CascadeDeleteAllowed;
import org.onap.cps.spi.CpsAdminPersistenceService;
import org.onap.cps.spi.CpsModulePersistenceService;
@@ -36,6 +42,7 @@ import org.onap.cps.spi.entities.AnchorEntity;
import org.onap.cps.spi.entities.SchemaSetEntity;
import org.onap.cps.spi.entities.YangResourceEntity;
import org.onap.cps.spi.exceptions.AlreadyDefinedException;
+import org.onap.cps.spi.exceptions.DuplicatedYangResourceException;
import org.onap.cps.spi.exceptions.SchemaSetInUseException;
import org.onap.cps.spi.repository.AnchorRepository;
import org.onap.cps.spi.repository.DataspaceRepository;
@@ -44,12 +51,18 @@ import org.onap.cps.spi.repository.SchemaSetRepository;
import org.onap.cps.spi.repository.YangResourceRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DataIntegrityViolationException;
+import org.springframework.retry.annotation.Backoff;
+import org.springframework.retry.annotation.Retryable;
import org.springframework.stereotype.Component;
@Component
+@Slf4j
public class CpsModulePersistenceServiceImpl implements CpsModulePersistenceService {
+ private static final String YANG_RESOURCE_CHECKSUM_CONSTRAINT_NAME = "yang_resource_checksum_key";
+ private static final Pattern CHECKSUM_EXCEPTION_PATTERN = Pattern.compile(".*\\(checksum\\)=\\((\\w+)\\).*");
+
@Autowired
private YangResourceRepository yangResourceRepository;
@@ -70,6 +83,9 @@ public class CpsModulePersistenceServiceImpl implements CpsModulePersistenceServ
@Override
@Transactional
+ // A retry is made to store the schema set if it fails because of duplicated yang resource exception that
+ // can occur in case of specific concurrent requests.
+ @Retryable(value = DuplicatedYangResourceException.class, maxAttempts = 2, backoff = @Backoff(delay = 500))
public void storeSchemaSet(final String dataspaceName, final String schemaSetName,
final Map<String, String> yangResourcesNameToContentMap) {
@@ -107,7 +123,21 @@ public class CpsModulePersistenceServiceImpl implements CpsModulePersistenceServ
final Collection<YangResourceEntity> newYangResourceEntities = checksumToEntityMap.values();
if (!newYangResourceEntities.isEmpty()) {
- yangResourceRepository.saveAll(newYangResourceEntities);
+ try {
+ yangResourceRepository.saveAll(newYangResourceEntities);
+ } catch (final DataIntegrityViolationException dataIntegrityViolationException) {
+ // Throw a CPS duplicated Yang resource exception if the cause of the error is a yang checksum
+ // database constraint violation.
+ // If it is not, then throw the original exception
+ final Optional<DuplicatedYangResourceException> convertedException =
+ convertToDuplicatedYangResourceException(
+ dataIntegrityViolationException, newYangResourceEntities);
+ convertedException.ifPresent(
+ e -> log.warn(
+ "Cannot persist duplicated yang resource. "
+ + "A total of 2 attempts to store the schema set are planned.", e));
+ throw convertedException.isPresent() ? convertedException.get() : dataIntegrityViolationException;
+ }
}
return ImmutableSet.<YangResourceEntity>builder()
@@ -116,6 +146,67 @@ public class CpsModulePersistenceServiceImpl implements CpsModulePersistenceServ
.build();
}
+ /**
+ * Convert the specified data integrity violation exception into a CPS duplicated Yang resource exception
+ * if the cause of the error is a yang checksum database constraint violation.
+ * @param originalException the original db exception.
+ * @param yangResourceEntities the collection of Yang resources involved in the db failure.
+ * @return an optional converted CPS duplicated Yang resource exception. The optional is empty if the original
+ * cause of the error is not a yang checksum database constraint violation.
+ */
+ private Optional<DuplicatedYangResourceException> convertToDuplicatedYangResourceException(
+ final DataIntegrityViolationException originalException,
+ final Collection<YangResourceEntity> yangResourceEntities) {
+
+ // The exception result
+ DuplicatedYangResourceException duplicatedYangResourceException = null;
+
+ final Throwable cause = originalException.getCause();
+ if (cause instanceof ConstraintViolationException) {
+ final ConstraintViolationException constraintException = (ConstraintViolationException) cause;
+ if (YANG_RESOURCE_CHECKSUM_CONSTRAINT_NAME.equals(constraintException.getConstraintName())) {
+ // Db constraint related to yang resource checksum uniqueness is not respected
+ final String checksumInError = getDuplicatedChecksumFromException(constraintException);
+ final String nameInError = getNameForChecksum(checksumInError, yangResourceEntities);
+ duplicatedYangResourceException =
+ new DuplicatedYangResourceException(nameInError, checksumInError, constraintException);
+ }
+ }
+
+ return Optional.ofNullable(duplicatedYangResourceException);
+
+ }
+
+ /**
+ * Get the checksum that caused the constraint violation exception.
+ * @param exception the exception having the checksum in error.
+ * @return the checksum in error or null if not found.
+ */
+ private String getDuplicatedChecksumFromException(final ConstraintViolationException exception) {
+ String checksum = null;
+ final Matcher matcher = CHECKSUM_EXCEPTION_PATTERN.matcher(exception.getSQLException().getMessage());
+ if (matcher.find() && matcher.groupCount() == 1) {
+ checksum = matcher.group(1);
+ }
+ return checksum;
+ }
+
+ /**
+ * Get the name of the yang resource having the specified checksum.
+ * @param checksum the checksum. Null is supported.
+ * @param yangResourceEntities the list of yang resources to search among.
+ * @return the name found or null if none.
+ */
+ private String getNameForChecksum(
+ final String checksum, final Collection<YangResourceEntity> yangResourceEntities) {
+ return
+ yangResourceEntities.stream()
+ .filter(entity -> StringUtils.equals(checksum, (entity.getChecksum())))
+ .findFirst()
+ .map(YangResourceEntity::getName)
+ .orElse(null);
+ }
+
@Override
public Map<String, String> getYangSchemaResources(final String dataspaceName, final String schemaSetName) {
final var dataspaceEntity = dataspaceRepository.getByName(dataspaceName);