J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.jvmstat.perfdata.monitor.protocol.file; |
| 27 | |
| 28 | import sun.jvmstat.monitor.*; |
| 29 | import sun.jvmstat.monitor.event.HostListener; |
| 30 | import sun.jvmstat.perfdata.monitor.*; |
| 31 | import java.util.*; |
| 32 | import java.net.*; |
| 33 | |
| 34 | /** |
| 35 | * Concrete implementation of the MonitoredHost interface for the |
| 36 | * <em>file:</em> protocol of the HotSpot PerfData monitoring implementation. |
| 37 | * |
| 38 | * @author Brian Doherty |
| 39 | * @since 1.5 |
| 40 | */ |
| 41 | public class MonitoredHostProvider extends MonitoredHost { |
| 42 | |
| 43 | /** |
| 44 | * The default polling interval. Not used by the <em>file:</em> protocol. |
| 45 | */ |
| 46 | public static final int DEFAULT_POLLING_INTERVAL = 0; |
| 47 | |
| 48 | /** |
| 49 | * Create a MonitoredHostProvider instance using the given HostIdentifier. |
| 50 | * |
| 51 | * @param hostId the host identifier for this MonitoredHost |
| 52 | */ |
| 53 | public MonitoredHostProvider(HostIdentifier hostId) { |
| 54 | this.hostId = hostId; |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * {@inheritDoc} |
| 59 | */ |
| 60 | public MonitoredVm getMonitoredVm(VmIdentifier vmid) |
| 61 | throws MonitorException { |
| 62 | return getMonitoredVm(vmid, DEFAULT_POLLING_INTERVAL); |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * {@inheritDoc}. |
| 67 | * <p> |
| 68 | * Note - the <em>file:</em> protocol silently ignores the |
| 69 | * <tt>interval</tt> parameter. |
| 70 | */ |
| 71 | public MonitoredVm getMonitoredVm(VmIdentifier vmid, int interval) |
| 72 | throws MonitorException { |
| 73 | // don't attempt to resolve 'file:' based vmid |
| 74 | return new FileMonitoredVm(vmid, interval); |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * {@inheritDoc} |
| 79 | */ |
| 80 | public void detach(MonitoredVm vm) { |
| 81 | vm.detach(); |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * {@inheritDoc}. |
| 86 | * <p> |
| 87 | * Note - the <em>file:</em> protocol currenly does not support |
| 88 | * registration or notification of event listeners. This method |
| 89 | * silently ignores the add request. |
| 90 | */ |
| 91 | public void addHostListener(HostListener listener) { |
| 92 | // no HostListener support for 'file:' based VmIdentifiers |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * {@inheritDoc}. |
| 97 | * <p> |
| 98 | * Note - the <em>file:</em> protocol currenly does not support |
| 99 | * registration or notification of event listeners. This method |
| 100 | * silently ignores the remove request. |
| 101 | */ |
| 102 | public void removeHostListener(HostListener listener) { |
| 103 | // no HostListener support for 'file:' based VmIdentifiers |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * {@inheritDoc}. |
| 108 | * <p> |
| 109 | * Note - the <em>file:</em> protocol currently does not support the |
| 110 | * notion of tracking active or inactive Java Virtual Machines. This |
| 111 | * method currently returns an empty set. |
| 112 | */ |
| 113 | public Set<Integer> activeVms() { |
| 114 | return new HashSet<Integer>(0); |
| 115 | } |
| 116 | } |