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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.sdc.versioning.dao.impl;
import com.datastax.driver.core.ColumnDefinitions;
import com.datastax.driver.core.ResultSet;
import com.datastax.driver.core.Row;
import com.datastax.driver.mapping.UDTMapper;
import org.openecomp.core.nosqldb.api.NoSqlDb;
import org.openecomp.core.nosqldb.factory.NoSqlDbFactory;
import org.openecomp.core.util.UniqueValueUtil;
import org.openecomp.core.utilities.CommonMethods;
import org.openecomp.sdc.versioning.dao.VersionableEntityDao;
import org.openecomp.sdc.versioning.dao.types.Version;
import org.openecomp.sdc.versioning.types.UniqueValueMetadata;
import org.openecomp.sdc.versioning.types.VersionableEntityMetadata;
import org.slf4j.LoggerFactory;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;
class VersionableEntityDaoCassandraImpl implements VersionableEntityDao {
private static final NoSqlDb noSqlDb = NoSqlDbFactory.getInstance().createInterface();
private static org.slf4j.Logger Logger =
LoggerFactory.getLogger(VersionableEntityDaoCassandraImpl.class);
private static UDTMapper<Version> versionMapper =
noSqlDb.getMappingManager().udtMapper(Version.class);
private static String commaSeparatedQuestionMarks(int size) {
StringBuilder sb = new StringBuilder(size * 2 - 1);
for (int i = 0; i < size; i++) {
if (i > 0) {
sb.append(',');
}
sb.append('?');
}
return sb.toString();
}
@Override
public void initVersion(VersionableEntityMetadata metadata, String entityId, Version baseVersion,
Version newVersion) {
ResultSet rows = loadVersionRows(metadata, entityId, baseVersion);
List<String> columnNames =
rows.getColumnDefinitions().asList().stream().map(ColumnDefinitions.Definition::getName)
.collect(Collectors.toList());
String insertCql = String.format("insert into %s (%s) values (%s)", metadata.getName(),
CommonMethods.listToSeparatedString(columnNames, ','),
commaSeparatedQuestionMarks(columnNames.size()));
Logger.debug("insertCql", insertCql);
for (Row row : rows) {
List<Object> columnValues = new ArrayList<>();
Map<String, Object> columnNameToValue = new HashMap<>();
for (String columnName : columnNames) {
if (metadata.getVersionIdentifierName().equals(columnName)) {
columnValues.add(versionMapper.toUDT(newVersion));
columnNameToValue.put(columnName, newVersion.toString());
} else {
Object value = row.getObject(columnName);
columnValues.add(value);
columnNameToValue.put(columnName, value);
}
}
initRowUniqueValues(metadata.getUniqueValuesMetadata(), columnNameToValue);
noSqlDb.execute(insertCql, columnValues.toArray());
}
}
private ResultSet loadVersionRows(VersionableEntityMetadata metadata, String entityId,
Version version) {
String selectCql = String.format("select * from %s where %s=? and %s=?", metadata.getName(),
metadata.getIdentifierName(), metadata.getVersionIdentifierName());
Logger.debug("selectCql", selectCql);
Logger.debug("entityId", entityId);
Logger.debug("version", version);
return noSqlDb.execute(selectCql, entityId, versionMapper.toUDT(version));
}
@Override
public void deleteVersion(VersionableEntityMetadata metadata, String entityId,
Version versionToDelete) {
deleteRowsUniqueValues(metadata, entityId, versionToDelete);
String deleteCql = String.format("delete from %s where %s=? and %s=?", metadata.getName(),
metadata.getIdentifierName(), metadata.getVersionIdentifierName());
noSqlDb.execute(deleteCql, entityId, versionMapper.toUDT(versionToDelete));
}
private void initRowUniqueValues(List<UniqueValueMetadata> metadata,
Map<String, Object> columnNameToValue) {
for (UniqueValueMetadata uniqueMetadata : metadata) {
List<String> uniqueValueCombination = uniqueMetadata.getUniqueConstraintIdentifiers().stream()
.map(colName -> (String) columnNameToValue.get(colName)).collect(Collectors.toList());
UniqueValueUtil.createUniqueValue(uniqueMetadata.getType(),
uniqueValueCombination.toArray(new String[uniqueValueCombination.size()]));
}
}
private void deleteRowUniqueValues(List<UniqueValueMetadata> metadata,
Map<String, Object> columnNameToValue) {
for (UniqueValueMetadata uniqueMetadata : metadata) {
List<String> uniqueValueCombination = uniqueMetadata.getUniqueConstraintIdentifiers().stream()
.map(colName -> (String) columnNameToValue.get(colName)).collect(Collectors.toList());
UniqueValueUtil.deleteUniqueValue(uniqueMetadata.getType(),
uniqueValueCombination.toArray(new String[uniqueValueCombination.size()]));
}
}
private void deleteRowsUniqueValues(VersionableEntityMetadata metadata, String entityId,
Version version) {
if (metadata.getUniqueValuesMetadata().isEmpty()) {
return;
}
ResultSet rows = loadVersionRows(metadata, entityId, version);
List<String> columnNames =
rows.getColumnDefinitions().asList().stream().map(ColumnDefinitions.Definition::getName)
.collect(Collectors.toList());
for (Row row : rows) {
Map<String, Object> columnNameToValue =
columnNames.stream().filter(name -> row.getObject(name) != null).collect(Collectors
.toMap(Function.identity(),
columnName -> metadata.getVersionIdentifierName().equals(columnName) ? version
.toString() : row.getObject(columnName)));
deleteRowUniqueValues(metadata.getUniqueValuesMetadata(), columnNameToValue);
}
}
}
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