2 * collectd/java - org/collectd/java/GenericJMXConfConnection.java
3 * Copyright (C) 2009 Florian octo Forster
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Florian octo Forster <octo at verplant.org>
22 package org.collectd.java;
24 import java.util.List;
26 import java.util.Iterator;
27 import java.util.ArrayList;
28 import java.util.HashMap;
30 import javax.management.MBeanServerConnection;
31 import javax.management.ObjectName;
32 import javax.management.MalformedObjectNameException;
34 import javax.management.remote.JMXServiceURL;
35 import javax.management.remote.JMXConnector;
36 import javax.management.remote.JMXConnectorFactory;
38 import org.collectd.api.Collectd;
39 import org.collectd.api.PluginData;
40 import org.collectd.api.OConfigValue;
41 import org.collectd.api.OConfigItem;
43 class GenericJMXConfConnection
45 private String _username = null;
46 private String _password = null;
47 private String _host = null;
48 private String _service_url = null;
49 private MBeanServerConnection _jmx_connection = null;
50 private List<GenericJMXConfMBean> _mbeans = null;
55 private String getConfigString (OConfigItem ci) /* {{{ */
57 List<OConfigValue> values;
60 values = ci.getValues ();
61 if (values.size () != 1)
63 Collectd.logError ("GenericJMXConfConnection: The " + ci.getKey ()
64 + " configuration option needs exactly one string argument.");
69 if (v.getType () != OConfigValue.OCONFIG_TYPE_STRING)
71 Collectd.logError ("GenericJMXConfConnection: The " + ci.getKey ()
72 + " configuration option needs exactly one string argument.");
76 return (v.getString ());
77 } /* }}} String getConfigString */
79 private void connect () /* {{{ */
81 JMXServiceURL service_url;
82 JMXConnector connector;
85 if (_jmx_connection != null)
89 if (this._password != null)
93 if (this._username == null)
94 this._username = new String ("monitorRole");
96 credentials = new String[] { this._username, this._password };
98 environment = new HashMap ();
99 environment.put (JMXConnector.CREDENTIALS, credentials);
104 service_url = new JMXServiceURL (this._service_url);
105 connector = JMXConnectorFactory.connect (service_url, environment);
106 _jmx_connection = connector.getMBeanServerConnection ();
110 Collectd.logError ("GenericJMXConfConnection: "
111 + "Creating MBean server connection failed: " + e);
114 } /* }}} void connect */
120 * Host "tomcat0.mycompany"
121 * ServiceURL "service:jmx:rmi:///jndi/rmi://localhost:17264/jmxrmi"
122 * Collect "java.lang:type=GarbageCollector,name=Copy"
123 * Collect "java.lang:type=Memory"
127 public GenericJMXConfConnection (OConfigItem ci) /* {{{ */
128 throws IllegalArgumentException
130 List<OConfigItem> children;
131 Iterator<OConfigItem> iter;
133 this._mbeans = new ArrayList<GenericJMXConfMBean> ();
135 children = ci.getChildren ();
136 iter = children.iterator ();
137 while (iter.hasNext ())
139 OConfigItem child = iter.next ();
141 if (child.getKey ().equalsIgnoreCase ("Host"))
143 String tmp = getConfigString (child);
147 else if (child.getKey ().equalsIgnoreCase ("User"))
149 String tmp = getConfigString (child);
151 this._username = tmp;
153 else if (child.getKey ().equalsIgnoreCase ("Password"))
155 String tmp = getConfigString (child);
157 this._password = tmp;
159 else if (child.getKey ().equalsIgnoreCase ("ServiceURL"))
161 String tmp = getConfigString (child);
163 this._service_url = tmp;
165 else if (child.getKey ().equalsIgnoreCase ("Collect"))
167 String tmp = getConfigString (child);
170 GenericJMXConfMBean mbean;
172 mbean = GenericJMX.getMBean (tmp);
174 throw (new IllegalArgumentException ("No such MBean defined: "
175 + tmp + ". Please make sure all `MBean' blocks appear "
176 + "before (above) all `Connection' blocks."));
177 Collectd.logDebug ("GenericJMXConfConnection: " + this._host + ": Add " + tmp);
178 this._mbeans.add (mbean);
182 throw (new IllegalArgumentException ("Unknown option: "
186 if (this._service_url == null)
187 throw (new IllegalArgumentException ("No service URL was defined."));
188 if (this._mbeans.size () == 0)
189 throw (new IllegalArgumentException ("No valid collect statement "
191 } /* }}} GenericJMXConfConnection (OConfigItem ci) */
193 public void query () /* {{{ */
199 if (this._jmx_connection == null)
202 Collectd.logDebug ("GenericJMXConfConnection.query: "
203 + "Reading " + this._mbeans.size () + " mbeans from "
204 + ((this._host != null) ? this._host : "(null)"));
206 pd = new PluginData ();
207 pd.setHost ((this._host != null) ? this._host : "localhost");
208 pd.setPlugin ("GenericJMX");
210 for (int i = 0; i < this._mbeans.size (); i++)
214 status = this._mbeans.get (i).query (this._jmx_connection, pd);
217 this._jmx_connection = null;
221 } /* }}} void query */
223 public String toString ()
225 return (new String ("host = " + this._host + "; "
226 + "url = " + this._service_url));
230 /* vim: set sw=2 sts=2 et fdm=marker : */