RrdUtil.java

/*
 * Copyright 2010 NCHOVY
 * 
 * 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.krakenapps.rrd.impl;

import org.krakenapps.rrd.ArchiveConfig;
import org.krakenapps.rrd.DataSourceConfig;

public class RrdUtil {
	public static final double epsilon = 1e-08;

	public static boolean doubleListEqual(double[] l1, double[] l2) {
		if (l1.length != l2.length)
			return false;

		for (int i = 0; i < l1.length; ++i) {
			if (!doubleEqual(l1[i], l2[i]))
				return false;
		}
		return true;
	}

	public static boolean doubleEqual(double v1, double v2) {
		return (Double.isNaN(v1) && Double.isNaN(v2)) || Math.abs(v1 - v2) < epsilon;
	}

	public static ArchiveConfig archiveToConfig(Archive ar) {
		return new ArchiveConfig(ar.getCf(), ar.getXff(), (int) ar.getPdpPerRow(), ar.getRowCapacity());
	}

	public static DataSourceConfig dataSourceToConfig(DataSource ds) {
		return new DataSourceConfig(ds.getName(), ds.getType(), ds.getMinimalHeartbeat(), ds.getMin(), ds.getMax());
	}
}