/* ============================================================
* JRobin : Pure java implementation of RRDTool's functionality
* ============================================================
*
* Project Info: http://www.jrobin.org
* Project Lead: Sasa Markovic (saxon@jrobin.org);
*
* (C) Copyright 2003-2005, by Sasa Markovic.
*
* Developers: Sasa Markovic (saxon@jrobin.org)
*
*
* This library 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 library 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
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
package org.jrobin.cmd;
import org.jrobin.core.RrdDb;
import org.jrobin.core.RrdDef;
import org.jrobin.core.RrdException;
import org.jrobin.core.Util;
import java.io.IOException;
class RrdCreateCmd extends RrdToolCmd {
static final String DEFAULT_START = "now-10s";
static final String DEFAULT_STEP = "300";
private RrdDef rrdDef;
String getCmdType() {
return "create";
}
Object execute() throws RrdException, IOException {
String startStr = getOptionValue("b", "start", DEFAULT_START);
long start = Util.getTimestamp(startStr);
String stepStr = getOptionValue("s", "step", DEFAULT_STEP);
long step = parseLong(stepStr);
String[] words = getRemainingWords();
if (words.length < 2) {
throw new RrdException("RRD file path not specified");
}
String path = words[1];
rrdDef = new RrdDef(path, start, step);
for (int i = 2; i < words.length; i++) {
if (words[i].startsWith("DS:")) {
parseDef(words[i]);
}
else if (words[i].startsWith("RRA:")) {
parseRra(words[i]);
}
else {
throw new RrdException("Invalid rrdcreate syntax: " + words[i]);
}
}
return createRrdDb();
}
private void parseDef(String word) throws RrdException {
// DEF:name:type:heratbeat:min:max
String[] tokens = new ColonSplitter(word).split();
if (tokens.length < 6) {
throw new RrdException("Invalid DS definition: " + word);
}
String dsName = tokens[1];
String dsType = tokens[2];
long heartbeat = parseLong(tokens[3]);
double min = parseDouble(tokens[4]);
double max = parseDouble(tokens[5]);
rrdDef.addDatasource(dsName, dsType, heartbeat, min, max);
}
private void parseRra(String word) throws RrdException {
// RRA:cfun:xff:steps:rows
String[] tokens = new ColonSplitter(word).split();
if (tokens.length < 5) {
throw new RrdException("Invalid RRA definition: " + word);
}
String cf = tokens[1];
double xff = parseDouble(tokens[2]);
int steps = parseInt(tokens[3]);
int rows = parseInt(tokens[4]);
rrdDef.addArchive(cf, xff, steps, rows);
}
private String createRrdDb() throws IOException, RrdException {
RrdDb rrdDb = getRrdDbReference(rrdDef);
releaseRrdDbReference(rrdDb);
return rrdDef.getPath();
}
}