| /* |
| * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * 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. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| 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); |
| } |
| } |