-/*
- * collectd/java - org/collectd/java/GenericJMXConfConnection.java
+/**
+ * collectd - bindings/java/org/collectd/java/GenericJMXConfConnection.java
* Copyright (C) 2009-2012 Florian octo Forster
*
- * 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.
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
*
- * 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.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * 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
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
*
* Authors:
* Florian octo Forster <octo at collectd.org>
private String _host = null;
private String _instance_prefix = null;
private String _service_url = null;
- private MBeanServerConnection _jmx_connection = null;
+ private JMXConnector _jmx_connector = null;
+ private MBeanServerConnection _mbean_connection = null;
private List<GenericJMXConfMBean> _mbeans = null;
/*
return (this._host);
}
- try
- {
- InetAddress localHost = InetAddress.getLocalHost();
- return (localHost.getHostName ());
- }
- catch (UnknownHostException e)
- {
- return ("localhost");
- }
+ return Collectd.getHostname();
} /* }}} String getHost */
-private void connect () /* {{{ */
-{
- JMXServiceURL service_url;
- JMXConnector connector;
- Map environment;
+ private void connect () /* {{{ */
+ {
+ JMXServiceURL service_url;
+ Map<String,Object> environment;
- if (_jmx_connection != null)
- return;
+ // already connected
+ if (this._jmx_connector != null) {
+ return;
+ }
- environment = null;
- if (this._password != null)
- {
- String[] credentials;
+ environment = null;
+ if (this._password != null)
+ {
+ String[] credentials;
- if (this._username == null)
- this._username = new String ("monitorRole");
+ if (this._username == null)
+ this._username = new String ("monitorRole");
- credentials = new String[] { this._username, this._password };
+ credentials = new String[] { this._username, this._password };
- environment = new HashMap ();
- environment.put (JMXConnector.CREDENTIALS, credentials);
- }
+ environment = new HashMap<String,Object> ();
+ environment.put (JMXConnector.CREDENTIALS, credentials);
+ environment.put (JMXConnectorFactory.PROTOCOL_PROVIDER_CLASS_LOADER, this.getClass().getClassLoader());
+ }
- try
- {
- service_url = new JMXServiceURL (this._service_url);
- connector = JMXConnectorFactory.connect (service_url, environment);
- _jmx_connection = connector.getMBeanServerConnection ();
- }
- catch (Exception e)
+ try
+ {
+ service_url = new JMXServiceURL (this._service_url);
+ this._jmx_connector = JMXConnectorFactory.connect (service_url, environment);
+ this._mbean_connection = _jmx_connector.getMBeanServerConnection ();
+ }
+ catch (Exception e)
+ {
+ Collectd.logError ("GenericJMXConfConnection: "
+ + "Creating MBean server connection failed: " + e);
+ disconnect ();
+ return;
+ }
+ } /* }}} void connect */
+
+ private void disconnect () /* {{{ */
{
- Collectd.logError ("GenericJMXConfConnection: "
- + "Creating MBean server connection failed: " + e);
- return;
- }
-} /* }}} void connect */
+ try
+ {
+ if (this._jmx_connector != null) {
+ this._jmx_connector.close();
+ }
+ }
+ catch (Exception e)
+ {
+ // It's fine if close throws an exception
+ }
-/*
- * public methods
- *
- * <Connection>
- * Host "tomcat0.mycompany"
- * ServiceURL "service:jmx:rmi:///jndi/rmi://localhost:17264/jmxrmi"
- * Collect "java.lang:type=GarbageCollector,name=Copy"
- * Collect "java.lang:type=Memory"
- * </Connection>
- *
- */
+ this._jmx_connector = null;
+ this._mbean_connection = null;
+ } /* }}} void disconnect */
+
+ /*
+ * public methods
+ *
+ * <Connection>
+ * Host "tomcat0.mycompany"
+ * ServiceURL "service:jmx:rmi:///jndi/rmi://localhost:17264/jmxrmi"
+ * Collect "java.lang:type=GarbageCollector,name=Copy"
+ * Collect "java.lang:type=Memory"
+ * </Connection>
+ *
+ */
public GenericJMXConfConnection (OConfigItem ci) /* {{{ */
throws IllegalArgumentException
{
{
PluginData pd;
+ // try to connect
connect ();
- if (this._jmx_connection == null)
+ if (this._mbean_connection == null)
return;
Collectd.logDebug ("GenericJMXConfConnection.query: "
{
int status;
- status = this._mbeans.get (i).query (this._jmx_connection, pd,
+ status = this._mbeans.get (i).query (this._mbean_connection, pd,
this._instance_prefix);
if (status != 0)
{
- this._jmx_connection = null;
+ disconnect ();
return;
}
} /* for */