/*
* Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package sun.jvmstat.perfdata.monitor.protocol.file;
import sun.jvmstat.monitor.*;
import sun.jvmstat.monitor.event.HostListener;
import sun.jvmstat.perfdata.monitor.*;
import java.util.*;
import java.net.*;
/**
* Concrete implementation of the MonitoredHost interface for the
* <em>file:</em> protocol of the HotSpot PerfData monitoring implementation.
*
* @author Brian Doherty
* @since 1.5
*/
public class MonitoredHostProvider extends MonitoredHost {
/**
* The default polling interval. Not used by the <em>file:</em> protocol.
*/
public static final int DEFAULT_POLLING_INTERVAL = 0;
/**
* Create a MonitoredHostProvider instance using the given HostIdentifier.
*
* @param hostId the host identifier for this MonitoredHost
*/
public MonitoredHostProvider(HostIdentifier hostId) {
this.hostId = hostId;
}
/**
* {@inheritDoc}
*/
public MonitoredVm getMonitoredVm(VmIdentifier vmid)
throws MonitorException {
return getMonitoredVm(vmid, DEFAULT_POLLING_INTERVAL);
}
/**
* {@inheritDoc}.
* <p>
* Note - the <em>file:</em> protocol silently ignores the
* <tt>interval</tt> parameter.
*/
public MonitoredVm getMonitoredVm(VmIdentifier vmid, int interval)
throws MonitorException {
// don't attempt to resolve 'file:' based vmid
return new FileMonitoredVm(vmid, interval);
}
/**
* {@inheritDoc}
*/
public void detach(MonitoredVm vm) {
vm.detach();
}
/**
* {@inheritDoc}.
* <p>
* Note - the <em>file:</em> protocol currenly does not support
* registration or notification of event listeners. This method
* silently ignores the add request.
*/
public void addHostListener(HostListener listener) {
// no HostListener support for 'file:' based VmIdentifiers
}
/**
* {@inheritDoc}.
* <p>
* Note - the <em>file:</em> protocol currenly does not support
* registration or notification of event listeners. This method
* silently ignores the remove request.
*/
public void removeHostListener(HostListener listener) {
// no HostListener support for 'file:' based VmIdentifiers
}
/**
* {@inheritDoc}.
* <p>
* Note - the <em>file:</em> protocol currently does not support the
* notion of tracking active or inactive Java Virtual Machines. This
* method currently returns an empty set.
*/
public Set<Integer> activeVms() {
return new HashSet<Integer>(0);
}
}