/*******************************************************************************
* This file is part of OpenNMS(R).
*
* Copyright (C) 2006-2011 The OpenNMS Group, Inc.
* OpenNMS(R) is Copyright (C) 1999-2011 The OpenNMS Group, Inc.
*
* OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
*
* OpenNMS(R) 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, either version 3 of the License,
* or (at your option) any later version.
*
* OpenNMS(R) 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 OpenNMS(R). If not, see:
* http://www.gnu.org/licenses/
*
* For more information contact:
* OpenNMS(R) Licensing <license@opennms.org>
* http://www.opennms.org/
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*******************************************************************************/
package org.opennms.netmgt.poller.monitors;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.net.ConnectException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.NoRouteToHostException;
import java.net.Socket;
import java.util.Map;
import org.apache.log4j.Level;
import org.opennms.core.utils.InetAddressUtils;
import org.opennms.core.utils.ParameterMap;
import org.opennms.core.utils.ThreadCategory;
import org.opennms.core.utils.TimeoutTracker;
import org.opennms.netmgt.model.PollStatus;
import org.opennms.netmgt.poller.Distributable;
import org.opennms.netmgt.poller.MonitoredService;
import org.opennms.netmgt.poller.NetworkInterface;
import org.opennms.netmgt.poller.NetworkInterfaceNotSupportedException;
/**
* <P>
* This class is designed to be used by the service poller framework to test the
* availability of IIOP running on a Domino server service on. The class
* implements the ServiceMonitor interface that allows it to be used along with
* other plug-ins by the service poller framework.
* </P>
*
* @author <A HREF="mailto:tarus@opennms.org">Tarus Balog </A>
* @author <A HREF="mike@opennms.org">Mike </A>
* @author <A HREF="weave@oculan.com">Weave </A>
*/
@Distributable
final public class DominoIIOPMonitor extends AbstractServiceMonitor {
/**
* Default port.
*/
private static final int DEFAULT_PORT = 63148;
/**
* Default port of where to find the IOR via HTTP
*/
private static final int DEFAULT_IORPORT = 80;
/**
* Default retries.
*/
private static final int DEFAULT_RETRY = 3;
/**
* Default timeout. Specifies how long (in milliseconds) to block waiting
* for data from the monitored interface.
*/
private static final int DEFAULT_TIMEOUT = 3000; // 3 second timeout on
// read()
/**
* {@inheritDoc}
*
* Poll the specified address for service availability.
*
* During the poll an attempt is made to connect on the specified port. If
* the connection request is successful, the banner line generated by the
* interface is parsed and if the banner text indicates that we are talking
* to Provided that the interface's response is valid we set the service
* status to SERVICE_AVAILABLE and return.
*/
public PollStatus poll(MonitoredService svc, Map<String, Object> parameters) {
NetworkInterface<InetAddress> iface = svc.getNetInterface();
//
// Process parameters
//
ThreadCategory log = ThreadCategory.getInstance(getClass());
//
// Get interface address from NetworkInterface
//
if (iface.getType() != NetworkInterface.TYPE_INET)
throw new NetworkInterfaceNotSupportedException("Unsupported interface type, only TYPE_INET currently supported");
TimeoutTracker tracker = new TimeoutTracker(parameters, DEFAULT_RETRY, DEFAULT_TIMEOUT);
int IORport = ParameterMap.getKeyedInteger(parameters, "ior-port", DEFAULT_IORPORT);
// Port
//
int port = ParameterMap.getKeyedInteger(parameters, "port", DEFAULT_PORT);
// Get the address instance.
//
InetAddress ipv4Addr = (InetAddress) iface.getAddress();
final String hostAddress = InetAddressUtils.str(ipv4Addr);
if (log.isDebugEnabled())
log.debug("poll: address = " + hostAddress + ", port = " + port + ", "+tracker);
// Lets first try to the the IOR via HTTP, if we can't get that then any
// other process that can
// do it the right way won't be able to connect anyway
//
try {
retrieveIORText(hostAddress, IORport);
} catch (Throwable e) {
return logDown(Level.DEBUG, "failed to get the corba IOR from " + ipv4Addr, e);
}
PollStatus status = null;
for(tracker.reset(); tracker.shouldRetry() && !status.isAvailable(); tracker.nextAttempt()) {
Socket socket = null;
try {
//
// create a connected socket
//
tracker.startAttempt();
socket = new Socket();
socket.connect(new InetSocketAddress(ipv4Addr, port), tracker.getConnectionTimeout());
socket.setSoTimeout(tracker.getSoTimeout());
log.debug("DominoIIOPMonitor: connected to host: " + ipv4Addr + " on port: " + port);
// got here so its up...
return PollStatus.up(tracker.elapsedTimeInMillis());
} catch (NoRouteToHostException e) {
status = logDown(Level.WARN, " No route to host exception for address " + hostAddress, e);
} catch (InterruptedIOException e) {
status = logDown(Level.DEBUG, "did not connect to host with " + tracker);
} catch (ConnectException e) {
status = logDown(Level.DEBUG, "Connection exception for address: " + ipv4Addr+" : "+e.getMessage());
} catch (IOException e) {
status = logDown(Level.DEBUG, "IOException while polling address: " + ipv4Addr+" : "+e.getMessage());
} finally {
try {
// Close the socket
if (socket != null)
socket.close();
} catch (IOException e) {
e.fillInStackTrace();
if (log.isDebugEnabled())
log.debug("DominoIIOPMonitor: Error closing socket.", e);
}
}
}
//
// return the status of the service
//
return status;
}
/**
* Method used to retrieve the IOR string from the Domino server.
*
* @param host
* the host name which has the IOR
* @param port
* the port to find the IOR via HTTP
*/
private String retrieveIORText(String host, int port) throws IOException {
String IOR = "";
java.net.URL u = new java.net.URL("http://" + host + ":" + port + "/diiop_ior.txt");
java.io.InputStream is = u.openStream();
java.io.BufferedReader dis = new java.io.BufferedReader(new java.io.InputStreamReader(is));
boolean done = false;
while (!done) {
String line = dis.readLine();
if (line == null) {
// end of stream
done = true;
} else {
IOR += line;
if (IOR.startsWith("IOR:")) {
// the IOR does not span a line, so we're done
done = true;
}
}
}
dis.close();
if (!IOR.startsWith("IOR:"))
throw new IOException("Invalid IOR: " + IOR);
return IOR;
}
}