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// **********************************************************************
//
// Copyright (c) 2003-2006 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <Ice/PluginManagerI.h>
#include <Ice/DynamicLibrary.h>
#include <Ice/Communicator.h>
#include <Ice/Properties.h>
#include <Ice/LoggerUtil.h>
#include <Ice/Initialize.h>
#include <Ice/LocalException.h>
using namespace std;
using namespace Ice;
using namespace IceInternal;
const char * const Ice::PluginManagerI::_kindOfObject = "plug-in";
typedef Ice::Plugin* (*PLUGIN_FACTORY)(const CommunicatorPtr&, const string&, const StringSeq&);
PluginPtr
Ice::PluginManagerI::getPlugin(const string& name)
{
IceUtil::Mutex::Lock sync(*this);
if(!_communicator)
{
throw CommunicatorDestroyedException(__FILE__, __LINE__);
}
map<string, PluginPtr>::const_iterator r = _plugins.find(name);
if(r != _plugins.end())
{
return (*r).second;
}
NotRegisteredException ex(__FILE__, __LINE__);
ex.kindOfObject = _kindOfObject;
ex.id = name;
throw ex;
}
void
Ice::PluginManagerI::addPlugin(const string& name, const PluginPtr& plugin)
{
IceUtil::Mutex::Lock sync(*this);
if(!_communicator)
{
throw CommunicatorDestroyedException(__FILE__, __LINE__);
}
map<string, PluginPtr>::const_iterator r = _plugins.find(name);
if(r != _plugins.end())
{
AlreadyRegisteredException ex(__FILE__, __LINE__);
ex.kindOfObject = _kindOfObject;
ex.id = name;
throw ex;
}
_plugins[name] = plugin;
}
void
Ice::PluginManagerI::destroy()
{
IceUtil::Mutex::Lock sync(*this);
if(_communicator)
{
map<string, PluginPtr>::iterator r;
for(r = _plugins.begin(); r != _plugins.end(); ++r)
{
r->second->destroy();
r->second = 0;
}
_communicator = 0;
}
_libraries = 0;
}
Ice::PluginManagerI::PluginManagerI(const CommunicatorPtr& communicator, const DynamicLibraryListPtr& libraries) :
_communicator(communicator),
_libraries(libraries)
{
}
void
Ice::PluginManagerI::loadPlugins(int& argc, char* argv[])
{
assert(_communicator);
StringSeq cmdArgs = argsToStringSeq(argc, argv);
//
// 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]
//
const string prefix = "Ice.Plugin.";
PropertiesPtr properties = _communicator->getProperties();
PropertyDict plugins = properties->getPropertiesForPrefix(prefix);
PropertyDict::const_iterator p;
for(p = plugins.begin(); p != plugins.end(); ++p)
{
string name = p->first.substr(prefix.size());
const string& value = p->second;
//
// Separate the entry point from the arguments.
//
string entryPoint;
StringSeq args;
string::size_type pos = value.find_first_of(" \t\n");
if(pos == string::npos)
{
entryPoint = value;
}
else
{
entryPoint = value.substr(0, pos);
string::size_type beg = value.find_first_not_of(" \t\n", pos);
while(beg != string::npos)
{
string::size_type end = value.find_first_of(" \t\n", beg);
if(end == string::npos)
{
args.push_back(value.substr(beg));
beg = end;
}
else
{
args.push_back(value.substr(beg, end - beg));
beg = value.find_first_not_of(" \t\n", end);
}
}
}
//
// 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 = properties->parseCommandLineOptions(name, cmdArgs);
loadPlugin(name, entryPoint, args);
}
stringSeqToArgs(cmdArgs, argc, argv);
}
void
Ice::PluginManagerI::loadPlugin(const string& name, const string& entryPoint, const StringSeq& args)
{
assert(_communicator);
//
// Load the entry point symbol.
//
PluginPtr plugin;
DynamicLibraryPtr library = new DynamicLibrary();
DynamicLibrary::symbol_type sym = library->loadEntryPoint(entryPoint);
if(sym == 0)
{
ostringstream out;
string msg = library->getErrorMessage();
out << "unable to load entry point `" << entryPoint << "'";
if(!msg.empty())
{
out << ": " + msg;
}
PluginInitializationException ex(__FILE__, __LINE__);
ex.reason = out.str();
throw ex;
}
//
// Invoke the factory function. No exceptions can be raised
// by the factory function because it's declared extern "C".
//
PLUGIN_FACTORY factory = (PLUGIN_FACTORY)sym;
plugin = factory(_communicator, name, args);
if(!plugin)
{
PluginInitializationException e(__FILE__, __LINE__);
ostringstream out;
out << "failure in entry point `" << entryPoint << "'";
e.reason = out.str();
throw e;
}
_libraries->add(library);
_plugins[name] = plugin;
}
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