1 |
+ |
/* |
2 |
+ |
* i-scream central monitoring system |
3 |
+ |
* http://www.i-scream.org.uk |
4 |
+ |
* Copyright (C) 2000-2002 i-scream |
5 |
+ |
* |
6 |
+ |
* This program is free software; you can redistribute it and/or |
7 |
+ |
* modify it under the terms of the GNU General Public License |
8 |
+ |
* as published by the Free Software Foundation; either version 2 |
9 |
+ |
* of the License, or (at your option) any later version. |
10 |
+ |
* |
11 |
+ |
* This program is distributed in the hope that it will be useful, |
12 |
+ |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 |
+ |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 |
+ |
* GNU General Public License for more details. |
15 |
+ |
* |
16 |
+ |
* You should have received a copy of the GNU General Public License |
17 |
+ |
* along with this program; if not, write to the Free Software |
18 |
+ |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
19 |
+ |
*/ |
20 |
+ |
|
21 |
|
//---PACKAGE DECLARATION--- |
22 |
< |
package uk.ac.ukc.iscream.filtermanager; |
22 |
> |
package uk.org.iscream.cms.server.filtermanager; |
23 |
|
|
24 |
|
//---IMPORTS--- |
25 |
< |
import uk.ac.ukc.iscream.core.*; |
26 |
< |
import uk.ac.ukc.iscream.util.*; |
25 |
> |
import uk.org.iscream.cms.util.*; |
26 |
> |
import uk.org.iscream.cms.server.core.*; |
27 |
> |
import uk.org.iscream.cms.server.componentmanager.*; |
28 |
|
|
29 |
|
/** |
30 |
< |
* The FilterManager handles assignment of Filters to hosts. |
30 |
> |
* The FilterManager handles initialisation |
31 |
> |
* of hosts with the system, allowing hosts to |
32 |
> |
* gain their configuration and a hook to a Filter |
33 |
> |
* to talk to. |
34 |
|
* |
35 |
|
* @author $Author$ |
36 |
|
* @version $Id$ |
37 |
|
*/ |
38 |
< |
class FilterManager { |
38 |
> |
public class FilterManager implements Component { |
39 |
|
|
40 |
|
//---FINAL ATTRIBUTES--- |
41 |
|
|
46 |
|
|
47 |
|
//---STATIC METHODS--- |
48 |
|
|
49 |
< |
public static void main(String[] args) { |
26 |
< |
// *************************************** |
27 |
< |
// VERY TEMPORARY - will find a better way |
28 |
< |
System.setProperty("org.omg.CORBA.ORBClass","jacorb.orb.ORB"); |
29 |
< |
System.setProperty("org.omg.CORBA.ORBSingletonClass","jacorb.orb.ORBSingleton"); |
30 |
< |
// *************************************** |
31 |
< |
|
32 |
< |
// can't have a real toString() :) |
33 |
< |
String toString = "FilterManager(" + REVISION.substring(11, REVISION.length() - 2) + ")"; |
34 |
< |
|
35 |
< |
ReferenceManager refman = ReferenceManager.init(null, null); |
36 |
< |
|
37 |
< |
refman.getLogger().write(toString, Logger.SYSINIT, "coming up"); |
38 |
< |
|
39 |
< |
// configuration variable we require |
40 |
< |
int listenPort = 0; |
49 |
> |
//---CONSTRUCTORS--- |
50 |
|
|
51 |
< |
Configuration config = refman.getCM().getConfiguration("FilterManager"); |
52 |
< |
if (config == null) { |
53 |
< |
throw new RuntimeException ("CRITICAL:Unable to obtain configuration" + |
54 |
< |
" Advise you check the i-scream log for more information."); |
55 |
< |
} else { |
56 |
< |
try { |
57 |
< |
listenPort = Integer.parseInt(config.getProperty("FilterManager.listenPort")); |
58 |
< |
} catch (org.omg.CORBA.MARSHAL e) { |
50 |
< |
refman.getLogger().write(toString, Logger.FATAL, "required config property not present"); |
51 |
< |
throw new RuntimeException ("CRITICAL:Unable to obtain required configuration property" + |
52 |
< |
" Advise you check the i-scream log for more information."); |
51 |
> |
/** |
52 |
> |
* Constructs a FilterManager with the name given |
53 |
> |
* |
54 |
> |
* @param givenName the name |
55 |
> |
*/ |
56 |
> |
public FilterManager(String givenName) { |
57 |
> |
NAME = givenName; |
58 |
> |
} |
59 |
|
|
60 |
< |
} |
61 |
< |
} |
60 |
> |
//---PUBLIC METHODS--- |
61 |
> |
|
62 |
> |
/** |
63 |
> |
* This method starts the FilterManager |
64 |
> |
*/ |
65 |
> |
public void start() throws ComponentStartException { |
66 |
> |
// get references to key objects |
67 |
> |
_logger = _refman.getLogger(); |
68 |
|
|
69 |
< |
refman.getLogger().write(toString, Logger.SYSINIT, "configured"); |
69 |
> |
_logger.write(toString(), Logger.SYSINIT, "coming up"); |
70 |
|
|
71 |
< |
refman.getLogger().write(toString, Logger.SYSINIT, "starting listener"); |
72 |
< |
|
61 |
< |
HostListener hostListener = new HostListener(listenPort); |
71 |
> |
// startup a thread to listen for hosts |
72 |
> |
HostListener hostListener = new HostListener(); |
73 |
|
hostListener.start(); |
74 |
|
|
75 |
< |
refman.getLogger().write(toString, Logger.SYSINIT, "listener started"); |
65 |
< |
|
75 |
> |
_logger.write(toString(), Logger.SYSINIT, "started"); |
76 |
|
} |
77 |
+ |
|
78 |
+ |
/** |
79 |
+ |
* Does a dependency check. Used mainly at startup to |
80 |
+ |
* see if the required dependencies (components) are up |
81 |
+ |
* and running. |
82 |
+ |
* |
83 |
+ |
* @return a boolean value, true if the depdencies are satisfied |
84 |
+ |
*/ |
85 |
+ |
public boolean depCheck() { |
86 |
+ |
// This also depends on Filters.. but only when requested. |
87 |
+ |
// I believe the code is in place to handle that elsewhere. |
88 |
+ |
try { |
89 |
+ |
org.omg.CORBA.Object obj; |
90 |
+ |
obj = _refman.getCORBARef("iscream.Logger"); |
91 |
+ |
obj = _refman.getCORBARef("iscream.ConfigurationManager"); |
92 |
+ |
} catch(ComponentCORBAException e) { |
93 |
+ |
System.err.println(toString() + ": Dependency Failure: "+e); |
94 |
+ |
return false; |
95 |
+ |
} |
96 |
+ |
// dependency check suceeded |
97 |
+ |
return true; |
98 |
+ |
} |
99 |
+ |
|
100 |
+ |
/** |
101 |
+ |
* Overrides the {@link java.lang.Object#toString() Object.toString()} |
102 |
+ |
* method to provide clean logging (every class should have this). |
103 |
+ |
* |
104 |
+ |
* This uses the uk.org.iscream.cms.util.NameFormat class |
105 |
+ |
* to format the toString() |
106 |
+ |
* |
107 |
+ |
* @return the name of this class and its CVS revision |
108 |
+ |
*/ |
109 |
+ |
public String toString() { |
110 |
+ |
return FormatName.getName( |
111 |
+ |
NAME, |
112 |
+ |
getClass().getName(), |
113 |
+ |
REVISION); |
114 |
+ |
} |
115 |
|
|
68 |
– |
//---CONSTRUCTORS--- |
69 |
– |
|
70 |
– |
//---PUBLIC METHODS--- |
71 |
– |
|
116 |
|
//---PRIVATE METHODS--- |
117 |
|
|
118 |
|
//---ACCESSOR/MUTATOR METHODS--- |
119 |
|
|
120 |
|
//---ATTRIBUTES--- |
121 |
|
|
122 |
+ |
/** |
123 |
+ |
* This is the friendly identifier of the |
124 |
+ |
* component this class is running in. |
125 |
+ |
* eg, a Filter may be called "filter1", |
126 |
+ |
* If this class does not have an owning |
127 |
+ |
* component, a name from the configuration |
128 |
+ |
* can be placed here. This name could also |
129 |
+ |
* be changed to null for utility classes. |
130 |
+ |
*/ |
131 |
+ |
private String _name = FilterManager.NAME; |
132 |
+ |
|
133 |
+ |
/** |
134 |
+ |
* This holds a reference to the |
135 |
+ |
* system logger that is being used. |
136 |
+ |
*/ |
137 |
+ |
private Logger _logger; |
138 |
+ |
|
139 |
+ |
/** |
140 |
+ |
* A reference to the reference manager in use |
141 |
+ |
*/ |
142 |
+ |
private ReferenceManager _refman = ReferenceManager.getInstance(); |
143 |
+ |
|
144 |
|
//---STATIC ATTRIBUTES--- |
145 |
+ |
|
146 |
+ |
/** |
147 |
+ |
* The friendly name for this component, used by |
148 |
+ |
* all related classes. |
149 |
+ |
* This is set from the configuration. |
150 |
+ |
*/ |
151 |
+ |
public static String NAME; |
152 |
|
|
153 |
< |
} |
153 |
> |
} |