/* ============================================================
* 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.RrdException;
import org.jrobin.core.Sample;
import org.jrobin.core.Util;
import java.io.IOException;
class RrdUpdateCmd extends RrdToolCmd {
String getCmdType() {
return "update";
}
Object execute() throws RrdException, IOException {
String template = getOptionValue("t", "template");
String[] dsNames = (template != null) ? new ColonSplitter(template).split() : null;
String[] words = getRemainingWords();
if (words.length < 3) {
throw new RrdException("Insufficent number of parameters for rrdupdate command");
}
String path = words[1];
RrdDb rrdDb = getRrdDbReference(path);
try {
if (dsNames != null) {
// template specified, check datasource names
for (String dsName : dsNames) {
if (!rrdDb.containsDs(dsName)) {
throw new RrdException("Invalid datasource name: " + dsName);
}
}
}
// parse update strings
long timestamp = -1;
for (int i = 2; i < words.length; i++) {
String[] tokens = new ColonSplitter(words[i]).split();
if (dsNames != null && dsNames.length + 1 != tokens.length) {
throw new RrdException("Template requires " + dsNames.length + " values, " +
(tokens.length - 1) + " value(s) found in: " + words[i]);
}
int dsCount = rrdDb.getHeader().getDsCount();
if (dsNames == null && dsCount + 1 != tokens.length) {
throw new RrdException("Expected " + dsCount + " values, " +
(tokens.length - 1) + " value(s) found in: " + words[i]);
}
timestamp = Util.getTimestamp(tokens[0]);
Sample sample = rrdDb.createSample(timestamp);
for (int j = 1; j < tokens.length; j++) {
if (dsNames == null) {
sample.setValue(j - 1, parseDouble(tokens[j]));
}
else {
sample.setValue(dsNames[j - 1], parseDouble(tokens[j]));
}
}
sample.update();
}
return timestamp;
}
finally {
releaseRrdDbReference(rrdDb);
}
}
}