/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-08 The eXist Project
* http://exist-db.org
*
* 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
* 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* $Id$
*/
package org.exist.storage.report;
import java.util.Iterator;
import org.exist.storage.BrokerPool;
import org.exist.storage.BufferStats;
import org.exist.storage.NativeTextEngine;
import org.exist.storage.NativeValueIndex;
import org.exist.storage.dom.DOMFile;
import org.exist.storage.index.BFile;
import org.exist.storage.index.CollectionStore;
import org.exist.util.Configuration;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
/** generate statistics about the XML storage -
* used by org.apache.cocoon.generation.StatusGenerator
* @author jmv
*/
public class XMLStatistics {
public final static String NAMESPACE = "http://exist.sourceforge.net/generators/status";
public final static String PREFIX = "status";
public ContentHandler contentHandler;
/**
* @param contentHandler
*/
public XMLStatistics(ContentHandler contentHandler) {
this.contentHandler = contentHandler;
}
public void genInstanceStatus() throws SAXException {
final AttributesImpl atts = new AttributesImpl();
//TODO : find a way to retrieve the actual instance's name !
atts.addAttribute("", "default", "default", "CDATA", "exist");
this.contentHandler.startElement(NAMESPACE, "database-instances",
PREFIX + ":database-instances", atts);
atts.clear();
BrokerPool instance;
for(final Iterator<BrokerPool> i = BrokerPool.getInstances(); i.hasNext(); ) {
instance = i.next();
atts.addAttribute("", "name", "name", "CDATA", instance.getId());
this.contentHandler.startElement(NAMESPACE, "database-instance",
PREFIX + ":database-instance", atts);
atts.clear();
addValue("configuration", instance.getConfiguration().getConfigFilePath());
addValue("data-directory", (String)instance.getConfiguration().getProperty(BrokerPool.PROPERTY_DATA_DIR));
addValue("cache-size", String.valueOf(instance.getConfiguration().getInteger("db-connection.cache-size")));
addValue("page-size", String.valueOf(instance.getConfiguration().getInteger("db-connection.page-size")));
addValue("collection-cache-mem", String.valueOf(instance.getConfiguration().getInteger("db-connection.collection-cache-mem")));
this.contentHandler.startElement(NAMESPACE, "pool", PREFIX + ":pool", atts);
addValue("max", String.valueOf(instance.getMax()));
addValue("active", String.valueOf(instance.countActiveBrokers()));
addValue("available", String.valueOf(instance.available()));
this.contentHandler.endElement(NAMESPACE, "pool", PREFIX + ":pool");
genBufferStatus(instance);
this.contentHandler.endElement(NAMESPACE, "database-instance",
PREFIX + ":database-instance");
}
this.contentHandler.endElement(NAMESPACE, "database-instances",
PREFIX + ":database-instances");
}
private void genBufferStatus(BrokerPool instance) throws SAXException {
final AttributesImpl atts = new AttributesImpl();
this.contentHandler.startElement(NAMESPACE, "buffers", PREFIX + ":buffers", atts);
final Configuration conf = instance.getConfiguration();
BFile db;
db = (BFile) conf.getProperty(CollectionStore.FILE_KEY_IN_CONFIG);
genBufferDetails(db.getIndexBufferStats(), db.getDataBufferStats(), "Collections storage ("+ db.getFile().getName() + ")");
final DOMFile dom = (DOMFile) conf.getProperty(DOMFile.CONFIG_KEY_FOR_FILE);
genBufferDetails(dom.getIndexBufferStats(), dom.getDataBufferStats(), "Resource storage ("+ dom.getFile().getName() + ")");
db = (BFile) conf.getProperty(NativeValueIndex.FILE_KEY_IN_CONFIG);
if (db != null)
{genBufferDetails(db.getIndexBufferStats(), db.getDataBufferStats(), "Values index ("+ db.getFile().getName() + ")");}
db = (BFile) conf.getProperty(NativeTextEngine.FILE_KEY_IN_CONFIG);
if (db != null)
{genBufferDetails(db.getIndexBufferStats(), db.getDataBufferStats(), "Fulltext index ("+ db.getFile().getName() + ")");}
this.contentHandler.endElement(NAMESPACE, "buffers", PREFIX + ":buffers");
}
private void genBufferDetails(BufferStats index, BufferStats data, String name) throws SAXException {
final AttributesImpl atts = new AttributesImpl();
atts.addAttribute("", "name", "name", "CDATA", name);
this.contentHandler.startElement(NAMESPACE, "file", PREFIX + ":file", atts);
atts.clear();
atts.addAttribute("", "type", "type", "CDATA", "btree");
this.contentHandler.startElement(NAMESPACE, "buffer", PREFIX + ":buffer", atts);
atts.clear();
addValue("size", String.valueOf(index.getSize()));
addValue("used", String.valueOf(index.getUsed()));
addValue("hits", String.valueOf(index.getPageHits()));
addValue("fails", String.valueOf(index.getPageFails()));
this.contentHandler.endElement(NAMESPACE, "buffer", PREFIX + ":buffer");
atts.addAttribute("", "type", "type", "CDATA", "data");
this.contentHandler.startElement(NAMESPACE, "buffer", PREFIX + ":buffer", atts);
atts.clear();
addValue("size", String.valueOf(data.getSize()));
addValue("used", String.valueOf(data.getUsed()));
addValue("hits", String.valueOf(data.getPageHits()));
addValue("fails", String.valueOf(data.getPageFails()));
this.contentHandler.endElement(NAMESPACE, "buffer", PREFIX + ":buffer");
this.contentHandler.endElement(NAMESPACE, "file", PREFIX + ":file");
}
public void addValue(String elem, String value) throws SAXException {
final AttributesImpl atts = new AttributesImpl();
this.contentHandler.startElement(NAMESPACE, elem, PREFIX + ':' + elem, atts);
this.contentHandler.characters(value.toCharArray(), 0, value.length());
this.contentHandler.endElement(NAMESPACE, elem, PREFIX + ':' + elem);
}
/**
* @param contentHandler
*/
public void setContentHandler(ContentHandler contentHandler) {
this.contentHandler = contentHandler;
}
}