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// **********************************************************************
//
// Copyright (c) 2002
// ZeroC, Inc.
// Huntsville, AL, USA
//
// All Rights Reserved
//
// **********************************************************************
package Ice;
public final class PluginManagerI extends LocalObjectImpl implements PluginManager
{
public synchronized Plugin
getPlugin(String name)
{
if(_communicator == null)
{
throw new CommunicatorDestroyedException();
}
Plugin p = (Plugin)_plugins.get(name);
if(p != null)
{
return p;
}
throw new PluginNotFoundException();
}
public synchronized void
addPlugin(String name, Plugin plugin)
{
if(_communicator == null)
{
throw new CommunicatorDestroyedException();
}
if(_plugins.containsKey(name))
{
throw new PluginExistsException();
}
_plugins.put(name, plugin);
}
public synchronized void
destroy()
{
if(_communicator != null)
{
java.util.Iterator i = _plugins.entrySet().iterator();
while(i.hasNext())
{
Plugin p = (Plugin)i.next();
p.destroy();
}
_communicator = null;
}
}
public
PluginManagerI(Communicator communicator)
{
_communicator = communicator;
}
private void
loadPlugins(StringSeqHolder cmdArgs)
{
assert(_communicator != null);
//
// Load and initialize the plug-ins defined in the property set
// with the prefix "Ice.Plugin.". These properties should
// have the following format:
//
// Ice.Plugin.name=entry_point [args]
//
final String prefix = "Ice.Plugin.";
Ice.Properties properties = _communicator.getProperties();
java.util.Map plugins = properties.getPropertiesForPrefix(prefix);
java.util.Iterator p = plugins.entrySet().iterator();
while(p.hasNext())
{
java.util.Map.Entry entry = (java.util.Map.Entry)p.next();
String name = ((String)entry.getKey()).substring(prefix.length());
String value = (String)entry.getValue();
//
// Separate the entry point from the arguments.
//
String className;
String[] args;
int pos = value.indexOf(' ');
if(pos == -1)
{
pos = value.indexOf('\t');
}
if(pos == -1)
{
pos = value.indexOf('\n');
}
if(pos == -1)
{
className = value;
args = new String[0];
}
else
{
className = value.substring(0, pos);
args = value.substring(pos).trim().split("[ \t\n]+", pos);
}
//
// Convert command-line options into properties. First we
// convert the options from the plug-in configuration, then
// we convert the options from the application command-line.
//
args = properties.parseCommandLineOptions(name, args);
cmdArgs.value = properties.parseCommandLineOptions(name, cmdArgs.value);
loadPlugin(name, className, args);
}
}
private void
loadPlugin(String name, String className, String[] args)
{
assert(_communicator != null);
//
// Instantiate the class.
//
PluginFactory factory = null;
try
{
Class c = Class.forName(className);
java.lang.Object obj = c.newInstance();
try
{
factory = (PluginFactory)obj;
}
catch(ClassCastException ex)
{
PluginInitializationException e = new PluginInitializationException();
e.reason = "class " + className + " does not implement Ice.PluginFactory";
e.initCause(ex);
throw e;
}
}
catch(ClassNotFoundException ex)
{
PluginInitializationException e = new PluginInitializationException();
e.reason = "class " + className + " not found";
e.initCause(ex);
throw e;
}
catch(IllegalAccessException ex)
{
PluginInitializationException e = new PluginInitializationException();
e.reason = "unable to access default constructor in class " + className;
e.initCause(ex);
throw e;
}
catch(InstantiationException ex)
{
PluginInitializationException e = new PluginInitializationException();
e.reason = "unable to instantiate class " + className;
e.initCause(ex);
throw e;
}
//
// Invoke the factory.
//
Plugin plugin = null;
try
{
plugin = factory.create(_communicator, name, args);
}
catch(Exception ex)
{
PluginInitializationException e = new PluginInitializationException();
e.reason = "exception in factory " + className;
e.initCause(ex);
throw e;
}
_plugins.put(name, plugin);
}
private Communicator _communicator;
private java.util.HashMap _plugins = new java.util.HashMap();
}
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