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/*
* Copyright © 2018 European Support Limited
*
* 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.
*/
package org.openecomp.core.nosqldb.impl.cassandra;
import com.datastax.driver.core.BoundStatement;
import com.datastax.driver.core.Host;
import com.datastax.driver.core.PreparedStatement;
import com.datastax.driver.core.ResultSet;
import com.datastax.driver.core.Session;
import com.datastax.driver.mapping.MappingManager;
import java.util.Set;
import java.util.stream.Collectors;
import org.openecomp.core.nosqldb.api.NoSqlDb;
import org.openecomp.core.nosqldb.util.CassandraUtils;
import org.openecomp.core.utilities.CommonMethods;
import org.openecomp.sdc.common.errors.CoreException;
import org.openecomp.sdc.common.errors.ErrorCategory;
import org.openecomp.sdc.common.errors.ErrorCode;
import org.openecomp.sdc.logging.api.Logger;
import org.openecomp.sdc.logging.api.LoggerFactory;
class CassandraNoSqlDbImpl implements NoSqlDb {
private final Session session;
private final String keySpace;
private final MappingManager mappingManager;
private final Logger log = LoggerFactory.getLogger(this.getClass().getName());
public CassandraNoSqlDbImpl(Session session) {
this.session = session;
this.keySpace = this.session.getLoggedKeyspace();
this.mappingManager = new MappingManager(this.session);
}
@Override
public void insert(String tableName, String[] colNames, Object[] values) {
if (colNames.length != values.length) {
throw new CoreException((new ErrorCode.ErrorCodeBuilder())
.withMessage("number of colmuns[" + colNames.length + "] is not equal to the number of values[" + values.length + "].")
.withId("E0005").withCategory(ErrorCategory.APPLICATION).build());
}
StringBuilder sb = new StringBuilder();
sb.append("insert into ").append(tableName).append(" (").append(CommonMethods.arrayToCommaSeparatedString(colNames)).append(") values (")
.append(CommonMethods.duplicateStringWithDelimiter("?", ',', values.length)).append(")");
log.info(sb.toString());
PreparedStatement prepared = session.prepare(sb.toString());
BoundStatement bound;
bound = prepared.bind(values);
session.execute(bound);
}
@Override
public ResultSet execute(String statement) {
return session.execute(statement);
}
@Override
public ResultSet execute(String statementName, Object... values) {
String statement = CassandraUtils.getStatement(statementName);
if (statement == null) {
statement = statementName;
}
if (values != null) {
PreparedStatement prepared = session.prepare(statement);
BoundStatement bound;
bound = prepared.bind(values);
return session.execute(bound);
} else {
return session.execute(statement);
}
}
@Override
public MappingManager getMappingManager() {
return mappingManager;
}
@Override
public String getVersion() {
try {
Set<Host> allHosts = this.session.getCluster().getMetadata().getAllHosts();
Set<String> versions = allHosts.stream().map(host -> host.getCassandraVersion().toString()).collect(Collectors.toSet());
return versions.stream().collect(Collectors.joining(","));
} catch (Exception e) {
log.error("Failed to retrieve version", e);
return "Failed to retrieve version";
}
}
}
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