1 |
+ |
/* |
2 |
+ |
* i-scream central monitoring system |
3 |
+ |
* http://www.i-scream.org |
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.core; |
22 |
> |
package uk.org.iscream.cms.server.core; |
23 |
|
|
24 |
|
//---IMPORTS--- |
25 |
< |
import uk.ac.ukc.iscream.util.ReferenceManager; |
25 |
> |
import uk.org.iscream.cms.util.*; |
26 |
> |
import uk.org.iscream.cms.server.componentmanager.*; |
27 |
|
|
7 |
– |
import org.omg.CORBA.ORB; |
8 |
– |
import org.omg.CosNaming.*; |
9 |
– |
import org.omg.PortableServer.*; |
10 |
– |
import uk.ac.ukc.iscream.core.*; |
11 |
– |
|
28 |
|
/** |
29 |
|
* The main class for the CORE of the I-Scream system. |
30 |
< |
* The main method of this class initialises the ORB |
31 |
< |
* and then starts and registers CORE I-Scream services |
32 |
< |
* with the name service. At which point it essentially |
30 |
> |
* This class is the component for CORE I-Scream services |
31 |
> |
* namely the Logger and the ConfigurationManager. |
32 |
> |
* It registers and starts them, at which point it essentially |
33 |
|
* finishs its role and the started services continue to |
34 |
|
* serve requests from the I-Scream system. |
35 |
|
* |
36 |
|
* @author $Author$ |
37 |
|
* @version $Id$ |
38 |
|
*/ |
39 |
< |
public class Core implements uk.ac.ukc.iscream.util.Component { |
39 |
> |
public class Core implements Component { |
40 |
|
|
41 |
|
//---FINAL ATTRIBUTES--- |
42 |
|
|
46 |
|
public static final String REVISION = "$Revision$"; |
47 |
|
|
48 |
|
/** |
49 |
< |
* The toString() of this class |
50 |
< |
* As it won't be instatiated, this is needed. |
49 |
> |
* The friendly name for this component, used by |
50 |
> |
* all related classes. |
51 |
|
*/ |
52 |
< |
public static final String toString = "CORE(" + REVISION.substring(11, REVISION.length() - 2) + ")"; |
52 |
> |
public static final String NAME = "Core"; |
53 |
|
|
38 |
– |
/** |
39 |
– |
* The default location of the properties file for the system |
40 |
– |
*/ |
41 |
– |
public static final String DEFAULTPROPERTIES = "default.properties"; |
42 |
– |
|
54 |
|
//---STATIC METHODS--- |
55 |
|
|
56 |
|
//---CONSTRUCTORS--- |
58 |
|
//---PUBLIC METHODS--- |
59 |
|
|
60 |
|
/** |
61 |
< |
* The main method which starts the CORE |
61 |
> |
* This method starts the CORE |
62 |
|
* Currently the args are passed direct to the ORB, |
63 |
|
* so any ORB paramaters could go there. |
64 |
|
* |
54 |
– |
* @param args the command line arguments |
65 |
|
*/ |
66 |
< |
public boolean start() { |
66 |
> |
public void start() throws ComponentStartException { |
67 |
|
// start and bind each server in turn |
68 |
|
|
69 |
|
// work out which logger to use |
70 |
< |
String whichLogger = System.getProperty("uk.ac.ukc.iscream.LoggerClass"); |
71 |
< |
String loggerPackage = System.getProperty("uk.ac.ukc.iscream.LoggerPackage"); |
70 |
> |
String whichLogger = System.getProperty("uk.org.iscream.cms.server.LoggerClass"); |
71 |
> |
String loggerPackage = System.getProperty("uk.org.iscream.cms.server.LoggerPackage"); |
72 |
|
|
73 |
|
// construct the relevant LoggerImpl |
74 |
|
LoggerImpl loggerImplRef = null; |
75 |
|
try { |
76 |
|
loggerImplRef = (LoggerImpl) ClassLoader.getSystemClassLoader().loadClass(loggerPackage + "." + whichLogger).newInstance(); |
77 |
|
} catch (Exception e) { |
78 |
< |
System.err.println(toString + ": ERROR Unable to start Logger - " + e.getMessage()); |
79 |
< |
// so return false to indicate failure |
70 |
< |
return false; |
78 |
> |
// if anything goes wrong we throw a failed start exception |
79 |
> |
throw new ComponentStartException("unable to load logging class"); |
80 |
|
} |
81 |
< |
|
81 |
> |
|
82 |
|
// setup and bind the LoggerServant |
83 |
|
LoggerServant loggerRef = new LoggerServant(loggerImplRef); |
84 |
|
_refman.bindToOrb(loggerRef, "iscream.Logger"); |
87 |
|
_logger = _refman.getLogger(); |
88 |
|
|
89 |
|
// create the Configurator |
90 |
< |
ConfigurationManagerServant configManRef = new ConfigurationManagerServant(_refman.getRootPOA(), _refman.getLogger()); |
90 |
> |
ConfigurationManagerServant configManRef = new ConfigurationManagerServant(); |
91 |
|
|
92 |
|
// and advertise it to the naming context |
93 |
|
_refman.bindToOrb(configManRef, "iscream.ConfigurationManager"); |
94 |
|
|
95 |
< |
_logger.write(toString, Logger.SYSINIT, "started"); |
96 |
< |
|
97 |
< |
// we were ok starting... |
95 |
> |
_logger.write(toString(), Logger.SYSINIT, "started"); |
96 |
> |
} |
97 |
> |
|
98 |
> |
/** |
99 |
> |
* Does a dependency check. Used mainly at startup to |
100 |
> |
* see if the required dependencies (components) are up |
101 |
> |
* and running. |
102 |
> |
* |
103 |
> |
* @return a boolean value, true if the depdencies are satisfied |
104 |
> |
*/ |
105 |
> |
public boolean depCheck() { |
106 |
> |
// the core has no depedencies |
107 |
|
return true; |
108 |
|
} |
109 |
+ |
|
110 |
+ |
/** |
111 |
+ |
* Overrides the {@link java.lang.Object#toString() Object.toString()} |
112 |
+ |
* method to provide clean logging (every class should have this). |
113 |
+ |
* |
114 |
+ |
* This uses the uk.org.iscream.cms.util.NameFormat class |
115 |
+ |
* to format the toString() |
116 |
+ |
* |
117 |
+ |
* @return the name of this class and its CVS revision |
118 |
+ |
*/ |
119 |
+ |
public String toString() { |
120 |
+ |
return FormatName.getName( |
121 |
+ |
_name, |
122 |
+ |
getClass().getName(), |
123 |
+ |
REVISION); |
124 |
+ |
} |
125 |
|
|
126 |
|
//---PRIVATE METHODS--- |
127 |
|
|
128 |
|
//---ACCESSOR/MUTATOR METHODS--- |
129 |
|
|
130 |
|
//---ATTRIBUTES--- |
131 |
< |
|
132 |
< |
Logger _logger; |
133 |
< |
ReferenceManager _refman = ReferenceManager.getInstance(); |
131 |
> |
|
132 |
> |
/** |
133 |
> |
* This is the friendly identifier of the |
134 |
> |
* component this class is running in. |
135 |
> |
* eg, a Filter may be called "filter1", |
136 |
> |
* If this class does not have an owning |
137 |
> |
* component, a name from the configuration |
138 |
> |
* can be placed here. This name could also |
139 |
> |
* be changed to null for utility classes. |
140 |
> |
*/ |
141 |
> |
private String _name = Core.NAME; |
142 |
> |
|
143 |
> |
/** |
144 |
> |
* This holds a reference to the |
145 |
> |
* system logger that is being used. |
146 |
> |
*/ |
147 |
> |
private Logger _logger; |
148 |
> |
|
149 |
> |
/** |
150 |
> |
* A reference to the reference manager in use |
151 |
> |
*/ |
152 |
> |
private ReferenceManager _refman = ReferenceManager.getInstance(); |
153 |
|
|
154 |
|
//---STATIC ATTRIBUTES--- |
155 |
|
|