| /* |
| * 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.rmi; |
| |
| import java.util.*; |
| import java.util.regex.*; |
| import java.io.*; |
| import java.rmi.RemoteException; |
| import sun.jvmstat.monitor.*; |
| import sun.jvmstat.monitor.event.*; |
| import sun.jvmstat.monitor.remote.*; |
| |
| /** |
| * Class for managing the RemoteMonitoredVm instances on a remote system. |
| * <p> |
| * This class is responsible for the mechanism that detects the active |
| * HotSpot Java Virtual Machines on the remote host and possibly for a |
| * specific user. The ability to detect all possible HotSpot Java Virtual |
| * Machines on the remote host may be limited by the permissions of the |
| * principal running the RMI server application on the remote host. |
| * |
| * @author Brian Doherty |
| * @since 1.5 |
| */ |
| public class RemoteVmManager { |
| |
| private RemoteHost remoteHost; |
| private String user; |
| |
| /** |
| * Creates a RemoteVmManager instance for the remote system. |
| * <p> |
| * Manages RemoteMonitordVm instances for which the principal |
| * running the remote server has appropriate permissions. |
| * |
| * @param remoteHost the remote proxy object to the RMI server on |
| * the remote system. |
| */ |
| public RemoteVmManager(RemoteHost remoteHost) { |
| this(remoteHost, null); |
| } |
| |
| /** |
| * Creates a RemoteVmManager instance for the given user. |
| * <p> |
| * Manages RemoteMonitoredVm instances for all remote Java Virtual |
| * machines owned by the specified user on the remote system. The |
| * RMI server on the remote system must have the appropriate permissions |
| * to access the named users Java Virtual Machines. |
| * |
| * @param remoteHost the remote proxy object to the RMI server on |
| * the remote system. |
| * @param user the name of the user |
| */ |
| public RemoteVmManager(RemoteHost remoteHost, String user) { |
| this.user = user; |
| this.remoteHost = remoteHost; |
| } |
| |
| /** |
| * Return the current set of monitorable Java Virtual Machines. |
| * <p> |
| * The set returned by this method depends on the user name passed |
| * to the constructor. If no user name was specified, then this |
| * method will return all candidate JVMs on the system. Otherwise, |
| * only the JVMs for the given user will be returned. This assumes |
| * that the RMI server process has the appropriate permissions to |
| * access the target set of JVMs. |
| * |
| * @return Set - the Set of monitorable Java Virtual Machines |
| */ |
| public Set<Integer> activeVms() throws MonitorException { |
| int[] active = null; |
| |
| try { |
| active = remoteHost.activeVms(); |
| |
| } catch (RemoteException e) { |
| throw new MonitorException("Error communicating with remote host: " |
| + e.getMessage(), e); |
| } |
| |
| Set<Integer> activeSet = new HashSet<Integer>(active.length); |
| |
| for (int i = 0; i < active.length; i++) { |
| activeSet.add(active[i]); |
| } |
| |
| return activeSet; |
| } |
| } |