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The jcollectd package implements the collectd protocol in Java, making it possible for Java applications to push data into collectd over the wire.

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/*
 * jcollectd
 * Copyright (C) 2009 Hyperic, Inc.
 * 
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; only version 2 of the License is applicable.
 * 
 * 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
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

package org.collectd.mx;

import java.util.HashSet;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.management.ObjectName;

/**
 * Container for MBeanAttribute objects and
 * collectd value_list_t structure metadata mapping.  
 */
public class MBeanQuery {
    private String _plugin;
    private String _pluginInstance;
        
    private ObjectName _name;
    private String _alias;
    private String _excludePattern;
    private Pattern _compiledExcludePattern;
    
    private Set _attributes =
        new HashSet();

    public MBeanQuery(ObjectName name) {
        _name = name;
    }

    public String getPlugin() {
        return _plugin;
    }

    public void setPlugin(String plugin) {
        _plugin = plugin;
    }

    public String getPluginInstance() {
        return _pluginInstance;
    }

    public void setPluginInstance(String pluginInstance) {
        _pluginInstance = pluginInstance;
    }

    public ObjectName getName() {
        return _name;
    }

    public void setName(ObjectName name) {
        _name = name;
    }

    public String getAlias() {
        return _alias;
    }

    public void setAlias(String alias) {
        _alias = alias;
    }

    public Set getAttributes() {
        return _attributes;
    }

    public void setAttributes(Set attributes) {
        _attributes = attributes;
    }

    public void addAttribute(MBeanAttribute attribute) {
        _attributes.add(attribute);
    }

    public void setExcludePattern(String excludePattern) {
        _excludePattern = excludePattern;
        if (excludePattern != null) {
            _compiledExcludePattern = Pattern.compile(excludePattern);
        }
    }
    /**
     * @param beanName
     * @return true if beanName is matched against the excludePattern (if set)
     */
    public boolean isExcluded(String beanName) {
        if (_excludePattern == null) return false;
        if (_excludePattern.length() == 0) return false;
        return _compiledExcludePattern.matcher(beanName).matches();
    }
}