1 |
//---PACKAGE DECLARATION--- |
2 |
package uk.org.iscream.client; |
3 |
|
4 |
//---IMPORTS--- |
5 |
import uk.org.iscream.clientinterface.*; |
6 |
import uk.org.iscream.componentmanager.*; |
7 |
import uk.org.iscream.core.*; |
8 |
import uk.org.iscream.util.*; |
9 |
|
10 |
/** |
11 |
* A startup component for the Local Clients. |
12 |
* |
13 |
* @author $Author: tdb1 $ |
14 |
* @version $Id: ClientMain.java,v 1.17 2001/03/22 17:31:43 tdb1 Exp $ |
15 |
*/ |
16 |
public class ClientMain implements Component { |
17 |
|
18 |
//---FINAL ATTRIBUTES--- |
19 |
|
20 |
/** |
21 |
* The current CVS revision of this class |
22 |
*/ |
23 |
public static final String REVISION = "$Revision: 1.17 $"; |
24 |
|
25 |
/** |
26 |
* The friendly name for this component, used by |
27 |
* all related classes. |
28 |
*/ |
29 |
public static final String NAME = "LocalClient"; |
30 |
|
31 |
//---STATIC METHODS--- |
32 |
|
33 |
//---CONSTRUCTORS--- |
34 |
|
35 |
//---PUBLIC METHODS--- |
36 |
|
37 |
/** |
38 |
* This starts the Local Client component |
39 |
*/ |
40 |
public void start() throws ComponentStartException { |
41 |
// get references to key objects |
42 |
_logger = _refman.getLogger(); |
43 |
|
44 |
_logger.write(toString(), Logger.SYSINIT, "coming up"); |
45 |
|
46 |
// get a reference to the configuration proxy |
47 |
ConfigurationProxy cp = ConfigurationProxy.getInstance(); |
48 |
|
49 |
// see if these Queue's need a size limit |
50 |
try { |
51 |
int queueSizeLimit = Integer.parseInt(cp.getProperty(NAME, "Queue.SizeLimit")); |
52 |
String queueRemoveAlgorithm = cp.getProperty(NAME, "Queue.RemoveAlgorithm"); |
53 |
int algorithm = StringUtils.getStringPos(queueRemoveAlgorithm, Queue.algorithms); |
54 |
if(algorithm != -1) { |
55 |
_logger.write(toString(), Logger.DEBUG, "Starting 2 Queues with size limit of "+queueSizeLimit+", using remove algorithm "+queueRemoveAlgorithm); |
56 |
// we have valid values, so lets start it. |
57 |
_alerterQueue = new Queue(queueSizeLimit, algorithm); |
58 |
_monitorQueue = new Queue(queueSizeLimit, algorithm); |
59 |
} |
60 |
else { |
61 |
_logger.write(toString(), Logger.WARNING, "Bad Queue Algorithm configuration, not known: "+queueRemoveAlgorithm); |
62 |
// just don't activate a limit |
63 |
_alerterQueue = new Queue(); |
64 |
_monitorQueue = new Queue(); |
65 |
} |
66 |
} catch (PropertyNotFoundException e) { |
67 |
_logger.write(toString(), Logger.DEBUG, "Optional config not set: "+e); |
68 |
// just don't activate a limit |
69 |
_alerterQueue = new Queue(); |
70 |
_monitorQueue = new Queue(); |
71 |
} catch (NumberFormatException e) { |
72 |
_logger.write(toString(), Logger.WARNING, "Bad Queue SizeLimit configuration: "+e); |
73 |
// just don't activate a limit |
74 |
_alerterQueue = new Queue(); |
75 |
_monitorQueue = new Queue(); |
76 |
} |
77 |
|
78 |
// startup monitors on these queues |
79 |
try { |
80 |
// try to get the interval, if this fails, we won't start up the monitor |
81 |
int queueMonitorInterval = Integer.parseInt(cp.getProperty(NAME, "Queue.MonitorInterval")); |
82 |
_alerterQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " Alerter"); |
83 |
_monitorQueue.startMonitor(queueMonitorInterval*1000, _monitorQueue, NAME + " Monitor"); |
84 |
} catch (PropertyNotFoundException e) { |
85 |
_logger.write(toString(), Logger.WARNING, "failed to find queue monitor config, disabling. " + e); |
86 |
} |
87 |
|
88 |
// setup the servant and connect |
89 |
_logger.write(toString(), Logger.SYSINIT, "starting servant and connecting"); |
90 |
try { |
91 |
ClientServant ref = new ClientServant(_monitorQueue); |
92 |
org.omg.CORBA.Object objRef = _refman.getRootPOA().servant_to_reference(ref); |
93 |
Client client = ClientHelper.narrow(objRef); |
94 |
|
95 |
// this name maybe shouldn't be static |
96 |
objRef = _refman.getCORBARef("iscream.ClientInterface.CorbaListener"); |
97 |
CorbaClientListener listener = CorbaClientListenerHelper.narrow(objRef); |
98 |
|
99 |
_logger.write(toString(), Logger.SYSINIT, "connecting"); |
100 |
CorbaControlHandler handler = listener.connect(client, NAME); |
101 |
handler.startData(); |
102 |
} |
103 |
catch(Exception e) { |
104 |
// not sure what to do here |
105 |
// so we just log the error |
106 |
_logger.write(toString(), Logger.ERROR, "ERROR - " + e.getMessage()); |
107 |
} |
108 |
|
109 |
// setup the MonitorManager |
110 |
MonitorManager monMan = MonitorManager.getInstance(); |
111 |
monMan.start(); |
112 |
|
113 |
// setup the AlerterManager |
114 |
AlerterManager alertMan = AlerterManager.getInstance(); |
115 |
alertMan.start(); |
116 |
|
117 |
_logger.write(toString(), Logger.SYSINIT, "started"); |
118 |
|
119 |
} |
120 |
|
121 |
/** |
122 |
* Does a dependency check. Used mainly at startup to |
123 |
* see if the required dependencies (components) are up |
124 |
* and running. |
125 |
* |
126 |
* @return a boolean value, true if the depdencies are satisfied |
127 |
*/ |
128 |
public boolean depCheck() { |
129 |
try { |
130 |
org.omg.CORBA.Object obj; |
131 |
// first check the ConfigurationManager is alive |
132 |
obj = _refman.getCORBARef("iscream.ConfigurationManager"); |
133 |
// then get some info on the CLI |
134 |
ConfigurationProxy cp = ConfigurationProxy.getInstance(); |
135 |
String cli = cp.getProperty("RootFilter", "RootFilter.realtimeInterfaceName"); |
136 |
// finally check the CLI is alive |
137 |
obj = _refman.getCORBARef("iscream.ClientInterface." + cli); |
138 |
} catch(ComponentCORBAException e) { |
139 |
System.err.println(toString() + ": Dependency Failure: "+e); |
140 |
return false; |
141 |
} catch(PropertyNotFoundException e) { |
142 |
System.err.println(toString() + ": Unable to obtain configuration: "+e); |
143 |
return false; |
144 |
} |
145 |
// dependency check suceeded |
146 |
return true; |
147 |
} |
148 |
|
149 |
/** |
150 |
* Overrides the {@link java.lang.Object#toString() Object.toString()} |
151 |
* method to provide clean logging (every class should have this). |
152 |
* |
153 |
* This uses the uk.org.iscream.util.FormatName class |
154 |
* to format the toString() |
155 |
* |
156 |
* @return the name of this class and its CVS revision |
157 |
*/ |
158 |
public String toString() { |
159 |
return FormatName.getName( |
160 |
NAME, |
161 |
getClass().getName(), |
162 |
REVISION); |
163 |
} |
164 |
|
165 |
//---PRIVATE METHODS--- |
166 |
|
167 |
//---ACCESSOR/MUTATOR METHODS--- |
168 |
|
169 |
//---ATTRIBUTES--- |
170 |
|
171 |
/** |
172 |
* This holds a reference to the |
173 |
* system logger that is being used. |
174 |
*/ |
175 |
private Logger _logger; |
176 |
|
177 |
/** |
178 |
* A reference to the reference manager in use |
179 |
*/ |
180 |
private ReferenceManager _refman = ReferenceManager.getInstance(); |
181 |
|
182 |
//---STATIC ATTRIBUTES--- |
183 |
|
184 |
/** |
185 |
* A queue for the alerter manager |
186 |
*/ |
187 |
public static Queue _alerterQueue; |
188 |
|
189 |
/** |
190 |
* A queue for the monitor manager |
191 |
*/ |
192 |
public static Queue _monitorQueue; |
193 |
|
194 |
} |