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//------------------------------------------------------------------------------
// Author: Dzianis Huznou
// Description: Plugin which encapsulate all requests to shared object library.
// Copyright (c) 2013 EPAM Systems
//------------------------------------------------------------------------------
/*
This file is part of Nfstrace.
Nfstrace is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, version 2 of the License.
Nfstrace is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Nfstrace. If not, see <http://www.gnu.org/licenses/>.
*/
//------------------------------------------------------------------------------
#include <stdexcept>
#include "analysis/plugin.h"
//------------------------------------------------------------------------------
namespace NST
{
namespace analysis
{
Plugin::Plugin(const std::string& path)
: DynamicLoad{path}
, usage {nullptr}
, create {nullptr}
, destroy{nullptr}
{
plugin_get_entry_points_func nst_get_entry_points{nullptr};
load_address_of("nst_get_entry_points", nst_get_entry_points);
const auto& entry_points = nst_get_entry_points();
if(!entry_points)
{
throw std::runtime_error{path + ": can't load plugin entry points!"};
}
switch(entry_points->vers)
{
// case NST_PLUGIN_API_VERSION_2_0:
// Add 2.0 specific initialization here
case NST_PLUGIN_API_VERSION:
default:
usage = entry_points->usage;
create = entry_points->create;
destroy = entry_points->destroy;
}
if(!usage || !create || !destroy)
{
throw std::runtime_error{path + ": can't load entry point for some plugin function(s)"};
}
}
const std::string Plugin::usage_of(const std::string& path)
{
Plugin instance{path};
return instance.usage();
}
PluginInstance::PluginInstance(const std::string& path, const std::string& args) : Plugin{path}
{
analysis = create(args.c_str());
if(!analysis) throw std::runtime_error{path + ": create call returns NULL-pointer"};
}
PluginInstance::~PluginInstance()
{
destroy(analysis);
}
} // namespace analysis
} // namespace NST
//------------------------------------------------------------------------------
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