// This file is part of OpenTSDB.
// Copyright (C) 2010-2012 The OpenTSDB Authors.
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 2.1 of the License, or (at your
// option) any later version. This program is distributed in the hope that it
// will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
// General Public License for more details. You should have received a copy
// of the GNU Lesser General Public License along with this program. If not,
// see <http://www.gnu.org/licenses/>.
package net.opentsdb.core;
import java.util.Arrays;
/** Helper functions to deal with the row key. */
final class RowKey {
private RowKey() {
// Can't create instances of this utility class.
}
/**
* Extracts the name of the metric ID contained in a row key.
* @param tsdb The TSDB to use.
* @param row The actual row key.
* @return The name of the metric.
*/
static String metricName(final TSDB tsdb, final byte[] row) {
final byte[] id = Arrays.copyOfRange(row, 0, tsdb.metrics.width());
return tsdb.metrics.getName(id);
}
}