01: /*
02: * <copyright>
03: *
04: * Copyright 2003-2004 BBNT Solutions, LLC
05: * under sponsorship of the Defense Advanced Research Projects
06: * Agency (DARPA).
07: *
08: * You can redistribute this software and/or modify it under the
09: * terms of the Cougaar Open Source License as published on the
10: * Cougaar Open Source Website (www.cougaar.org).
11: *
12: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
13: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
14: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
15: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
16: * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
17: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
18: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23: *
24: * </copyright>
25: */
26:
27: package org.cougaar.tools.server.system;
28:
29: import org.cougaar.tools.server.system.linux.LinuxSystemAccessFactory;
30: import org.cougaar.tools.server.system.other.NullSystemAccessFactory;
31:
32: /**
33: * Operating-System aware factory for creating the various system
34: * access utilities (<code>JavaThreadDumper</code>, etc).
35: */
36: public abstract class SystemAccessFactory {
37:
38: private static final int OS_OTHER = 0;
39: private static final int OS_LINUX = 1;
40:
41: private static final int OS_TYPE;
42: static {
43: // figure out the OS type
44: int type;
45: String osName = System.getProperty("os.name");
46: if ("Linux".equals(osName) || "Mac OS X".equals(osName)) {
47: type = OS_LINUX;
48: } else {
49: type = OS_OTHER;
50: }
51: OS_TYPE = type;
52: }
53:
54: /**
55: * Get an instance of the appropriate Operating-System specific
56: * <code>SystemAccessFactory</code>.
57: * <p>
58: * Subclasses of <code>SystemAccessFactory</code> "inherit"
59: * this static method, so they must define a similar
60: * (but differently named) "static get*Instance()" method.
61: */
62: public static SystemAccessFactory getInstance() {
63: if (OS_TYPE == OS_LINUX) {
64: return LinuxSystemAccessFactory.getLinuxInstance();
65: } else {
66: return NullSystemAccessFactory.getNullInstance();
67: }
68: }
69:
70: /**
71: * Create a <code>ProcessLauncher</code> for this
72: * Operating System.
73: */
74: public abstract ProcessLauncher createProcessLauncher();
75:
76: /**
77: * Create a <code>JavaThreadDumper</code> for this
78: * Operating System, or <tt>null</tt> if the
79: * service is not supported.
80: */
81: public abstract JavaThreadDumper createJavaThreadDumper();
82:
83: /**
84: * Create a <code>ProcessStatusReader</code> for this
85: * Operating System, or <tt>null</tt> if the
86: * service is not supported.
87: */
88: public abstract ProcessStatusReader createProcessStatusReader();
89:
90: /**
91: * Create a <code>ProcessKiller</code> for this
92: * Operating System, or <tt>null</tt> if the
93: * service is not supported.
94: */
95: public abstract ProcessKiller createProcessKiller();
96:
97: }
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