Port to CMake, get rid of os_int.h.

[stg.git] / stargazer / plugin_runner.cpp

diff --git a/stargazer/plugin_runner.cpp b/stargazer/plugin_runner.cpp
new file mode 100644 (file)
index 0000000..e43271c
--- /dev/null
+++ b/stargazer/plugin_runner.cpp
@@ -0,0 +1,151 @@
+/*
+ *    This program 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; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program 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 this program; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ *    Author : Boris Mikhailenko <stg34@stargazer.dp.ua>
+ *    Author : Maxim Mamontov <faust@stargazer.dp.ua>
+ */
+
+#include "plugin_runner.h"
+
+#include "stg/common.h"
+
+#include <dlfcn.h>
+#include <unistd.h>
+
+//-----------------------------------------------------------------------------
+PLUGIN_RUNNER::PLUGIN_RUNNER(const std::string & fileName,
+                             const std::string & name,
+                             const MODULE_SETTINGS & ms,
+                             ADMINS & admins,
+                             TARIFFS & tariffs,
+                             USERS & users,
+                             SERVICES & services,
+                             CORPORATIONS & corporations,
+                             TRAFFCOUNTER & traffcounter,
+                             STORE & store,
+                             const SETTINGS & settings)
+    : pluginFileName(fileName),
+      pluginName(name),
+      libHandle(NULL),
+      m_plugin(Load(ms, admins, tariffs, users, services, corporations,
+                    traffcounter, store, settings))
+{
+}
+//-----------------------------------------------------------------------------
+PLUGIN_RUNNER::~PLUGIN_RUNNER()
+{
+delete &m_plugin;
+if (dlclose(libHandle))
+    {
+    errorStr = "Failed to unload plugin '" + pluginFileName + "': " + dlerror();
+    printfd(__FILE__, "PLUGIN_RUNNER::Unload() - %s", errorStr.c_str());
+    }
+}
+//-----------------------------------------------------------------------------
+int PLUGIN_RUNNER::Start()
+{
+int res = m_plugin.Start();
+errorStr = m_plugin.GetStrError();
+return res;
+}
+//-----------------------------------------------------------------------------
+int PLUGIN_RUNNER::Stop()
+{
+int res = m_plugin.Stop();
+errorStr = m_plugin.GetStrError();
+return res;
+}
+//-----------------------------------------------------------------------------
+int PLUGIN_RUNNER::Reload(const MODULE_SETTINGS & ms)
+{
+int res = m_plugin.Reload(ms);
+errorStr = m_plugin.GetStrError();
+return res;
+}
+//-----------------------------------------------------------------------------
+PLUGIN & PLUGIN_RUNNER::Load(const MODULE_SETTINGS & ms,
+                             ADMINS & admins,
+                             TARIFFS & tariffs,
+                             USERS & users,
+                             SERVICES & services,
+                             CORPORATIONS & corporations,
+                             TRAFFCOUNTER & traffcounter,
+                             STORE & store,
+                             const SETTINGS & settings)
+{
+if (pluginFileName.empty())
+    {
+    const std::string msg = "Empty plugin file name.";
+    printfd(__FILE__, "PLUGIN_RUNNER::Load() - %s\n", msg.c_str());
+    throw Error(msg);
+    }
+
+if (access(pluginFileName.c_str(), R_OK))
+    {
+    const std::string msg = "Plugin file '" + pluginFileName + "' is missing or inaccessible.";
+    printfd(__FILE__, "PLUGIN_RUNNER::Load() - %s\n", msg.c_str());
+    throw Error(msg);
+    }
+
+libHandle = dlopen(pluginFileName.c_str(), RTLD_NOW);
+
+if (!libHandle)
+    {
+    std::string msg = "Error loading plugin '" + pluginFileName + "'";
+    const char* error = dlerror();
+    if (error)
+        msg = msg + ": '" + error + "'";
+    printfd(__FILE__, "PLUGIN_RUNNER::Load() - %s\n", msg.c_str());
+    throw Error(msg);
+    }
+
+PLUGIN * (*GetPlugin)();
+GetPlugin = (PLUGIN * (*)())dlsym(libHandle, "GetPlugin");
+if (!GetPlugin)
+    {
+    const std::string msg = "Plugin '" + pluginFileName + "' does not have GetPlugin() function. ";
+    printfd(__FILE__, "PLUGIN_RUNNER::Load() - %s\n", msg.c_str());
+    throw Error(msg);
+    }
+PLUGIN * plugin = GetPlugin();
+
+if (!plugin)
+    {
+    const std::string msg = "Failed to create an instance of plugin '" + pluginFileName + "'.";
+    printfd(__FILE__, "PLUGIN_RUNNER::Load() - %s\n", msg.c_str());
+    throw Error(msg);
+    }
+
+plugin->SetSettings(ms);
+plugin->SetTariffs(&tariffs);
+plugin->SetAdmins(&admins);
+plugin->SetUsers(&users);
+plugin->SetServices(&services);
+plugin->SetCorporations(&corporations);
+plugin->SetTraffcounter(&traffcounter);
+plugin->SetStore(&store);
+plugin->SetStgSettings(&settings);
+
+if (plugin->ParseSettings())
+    {
+    const std::string msg = "Plugin '" + pluginFileName + "' is unable to parse settings. " + plugin->GetStrError();
+    printfd(__FILE__, "PLUGIN_RUNNER::Load() - %s\n", msg.c_str());
+    throw Error(msg);
+    }
+
+return *plugin;
+}