void MountCommand::buildBackend (Cmdline const & cl)
{
MountBackendBuilder backend;
Key mpk (mp, KEY_CASCADING_NAME, KEY_END);
if (!mpk.isValid ())
{
throw invalid_argument (mp + " is not a valid mountpoint");
}
backend.setMountpoint (mpk, mountConf);
backend.setBackendConfig (cl.getPluginsConfig ("system/"));
PluginSpec resolver (cl.resolver);
if (cl.debug)
{
cout << "Trying to load the resolver plugin " << resolver.getName () << endl;
}
backend.addPlugin (PluginSpec (resolver));
if (cl.interactive)
{
cout << endl;
cout << "Enter a path to a file in the filesystem." << endl;
cout << "The path must either not exist or be a file." << endl;
cout << "For user or cascading mountpoints it must be a relative path." << endl;
cout << "Then, the path will be resolved dynamically." << endl;
cout << "Path: ";
cin >> path;
}
std::vector<PluginSpec> PluginVariantDatabase::getPluginVariantsFromSysconf (PluginSpec const & whichplugin, KeySet const & sysconf,
KeySet const & genconfToIgnore) const
{
std::vector<PluginSpec> result;
KeySet ksSysconf (sysconf);
// first find possible variants
Key kVariantBase ("system/elektra/plugins", KEY_END);
kVariantBase.addBaseName (whichplugin.getName ());
kVariantBase.addBaseName ("variants");
KeySet ksPluginVariantSysconf (ksSysconf.cut (kVariantBase));
KeySet ksToIterate (ksPluginVariantSysconf);
for (auto kCurrent : ksToIterate)
{
Key kCurrentTest (kVariantBase);
kCurrentTest.addBaseName (kCurrent.getBaseName ());
if (kCurrentTest == kCurrent)
{
PluginSpec variant (whichplugin);
KeySet ksVariantConfToAdd;
// new base for plugin conf
Key kVariantPluginConf ("system/", KEY_END);
// add system conf for plugin variant
Key kVariantSysconf (this->buildVariantSysconfKey (whichplugin, kCurrent.getBaseName (), "config"));
this->addKeysBelowKeyToConf (kVariantSysconf, ksPluginVariantSysconf, kVariantPluginConf, ksVariantConfToAdd);
// check if the variant was disabled : system/elektra/plugins/simpleini/variants/space/disable
Key kDisable = sysconf.lookup (this->buildVariantSysconfKey (whichplugin, kCurrent.getBaseName (), "disable"));
if (kDisable && kDisable.getString () == "1")
{
continue; // skip this variant
}
// check if the variant is in the genconfToIgnore list
Key kGenconfVariant (kVariantPluginConf);
kGenconfVariant.addBaseName (kCurrent.getBaseName ());
Key kIgnore = genconfToIgnore.lookup (kGenconfVariant);
if (kIgnore)
{
continue; // this variant was added by genconf already
}
if (ksVariantConfToAdd.size () == 0)
{
continue; // no config means no variant
}
variant.appendConfig (ksVariantConfToAdd);
result.push_back (variant);
}
}
return result;
}
Key PluginVariantDatabase::buildVariantSysconfKey (PluginSpec const & whichplugin, std::string const & variant,
std::string const & attr) const
{
Key result ("system/elektra/plugins", KEY_END);
result.addBaseName (whichplugin.getName ());
result.addBaseName ("variants");
result.addBaseName (variant);
result.addBaseName (attr);
return result;
}
PluginDatabase::func_t ModulesPluginDatabase::getSymbol (PluginSpec const & spec, std::string const & which) const
{
try
{
PluginPtr plugin = impl->modules.load (spec.getName (), spec.getConfig ());
return plugin->getSymbol (which);
}
catch (...)
{
return NULL;
}
}
PluginDatabase::Status ModulesPluginDatabase::status (PluginSpec const & spec) const
{
PluginPtr plugin;
try
{
KeySet conf = spec.getConfig ();
conf.append (Key ("system/module", KEY_VALUE, "this plugin was loaded for the status", KEY_END));
plugin = impl->modules.load (spec.getName (), conf);
return real;
}
catch (...)
{
if (hasProvides (*this, spec.getName ()))
{
return provides;
}
else
{
return missing;
}
}
}
std::string ModulesPluginDatabase::lookupInfo (PluginSpec const & spec, std::string const & which) const
{
PluginPtr plugin;
try
{
plugin = impl->modules.load (spec.getName (), spec.getConfig ());
}
catch (...)
{
throw;
}
return plugin->lookupInfo (which);
}
PluginDatabase::Status MockPluginDatabase::status (PluginSpec const & spec) const
{
auto it = data.find (spec);
if (it != data.end ())
{
return real;
}
if (hasProvides (*this, spec.getName ()))
{
return provides;
}
return missing;
}
void PluginAdder::addPlugin (PluginSpec const & spec)
{
PluginPtr plugin = modules.load (spec);
if (!plugin)
{
throw NoPlugin (spec.getName ());
}
std::shared_ptr<Plugin> sharedPlugin = std::move (plugin);
std::istringstream ss (sharedPlugin->lookupInfo ("placements"));
std::string placement;
while (ss >> placement)
{
if (sharedPlugin->lookupInfo ("stacking") == "" && placement == "postgetstorage")
{
// reverse postgetstorage, except stacking is set
plugins[placement].push_front (sharedPlugin);
}
else
{
plugins[placement].push_back (sharedPlugin);
}
}
}
bool operator() (PluginSpec const & s1, PluginSpec const & s2) const
{
return s1.getName () == s2.getName ();
}
/**
* @brief Add a plugin.
*
* @pre Needs to be a unique new name (use refname if you want to add the same module multiple times)
*
* Will automatically resolve virtual plugins to actual plugins.
*
* Also calls the checkconf function if provided by the plugin. The checkconf function has the
* following signature: int checkconf (Key * errorKey, KeySet * config) and allows a plugin to
* verify its configuration at mount time.
*
* @see resolveNeeds()
* @param plugin
*/
void BackendBuilder::addPlugin (PluginSpec const & plugin)
{
typedef int (*checkConfPtr) (ckdb::Key *, ckdb::KeySet *);
for (auto & p : toAdd)
{
if (p.getFullName () == plugin.getFullName ())
{
throw PluginAlreadyInserted (plugin.getFullName ());
}
}
PluginSpec newPlugin = plugin;
// if the plugin is actually a provider use it (otherwise we will get our name back):
PluginSpec provides = pluginDatabase->lookupProvides (plugin.getName ());
if (provides.getName () != newPlugin.getName ())
{
// keep our config and refname
newPlugin.setName (provides.getName ());
newPlugin.appendConfig (provides.getConfig ());
}
// call plugin's checkconf function (if provided)
// this enables a plugin to verify its configuration at mount time
checkConfPtr checkConfFunction = reinterpret_cast<checkConfPtr> (pluginDatabase->getSymbol (newPlugin, "checkconf"));
if (checkConfFunction)
{
ckdb::Key * errorKey = ckdb::keyNew (0);
// merge plugin config and backend config together
ckdb::KeySet * pluginConfig = newPlugin.getConfig ().dup ();
ckdb::ksAppend (pluginConfig, backendConf.getKeySet ());
// call the plugin's checkconf function
int checkResult = checkConfFunction (errorKey, pluginConfig);
if (checkResult == -1)
{
ckdb::ksDel (pluginConfig);
throw PluginConfigInvalid (errorKey);
}
else if (checkResult == 1)
{
// separate plugin config from the backend config
ckdb::Key * backendParent = ckdb::keyNew ("system/", KEY_END);
ckdb::KeySet * newBackendConfig = ckdb::ksCut (pluginConfig, backendParent);
// take over the new configuration
KeySet modifiedPluginConfig = KeySet (pluginConfig);
KeySet modifiedBackendConfig = KeySet (newBackendConfig);
newPlugin.setConfig (modifiedPluginConfig);
setBackendConfig (modifiedBackendConfig);
ckdb::keyDel (backendParent);
}
else
{
ckdb::ksDel (pluginConfig);
}
ckdb::keyDel (errorKey);
}
toAdd.push_back (newPlugin);
sort ();
}
bool PluginManager::loadPlugins()
{
QStringList pluginSpecNameFilters;
pluginSpecNameFilters.append("*.xml");
QString filename;
PluginSpec *pluginSpec;
bool disablePluginViewer = false;
QString currentPath = QDir::current().absolutePath();
// Load plugin specs
for (int i = 0; i < pluginPaths.size(); i++)
{
qDebug() << pluginPaths.at(i);
QDir dir(pluginPaths.at(i));
dir.setNameFilters(pluginSpecNameFilters);
QDirIterator dirIterator(dir, QDirIterator::Subdirectories);
while (dirIterator.hasNext())
{
dirIterator.next();
filename = dirIterator.fileInfo().absoluteFilePath();
pluginSpec = new PluginSpec(filename);
qDebug() << "Loaded pluginspec: " << pluginSpec->getVendor() + "." + pluginSpec->getName();
pluginMap.insert(pluginSpec->getVendor() + "." + pluginSpec->getName(), pluginSpec);
}
}
// First load the core plugin
pluginSpec = pluginMap.value(corePluginName);
if ( !(pluginSpec && loadPlugin(pluginSpec) ) )
{
qDebug() << "could not load core plugin";
return false;
}
qDebug() << "read selected Plugins file: " << selectedPluginsFile;
QFile selectedPlugins(selectedPluginsFile);
if (!selectedPlugins.open(QIODevice::ReadOnly | QIODevice::Text))
{
qDebug() << "could not open file";
}
QString pluginToLoad;
QTextStream in(&selectedPlugins);
pluginToLoad = in.readLine();
while (!pluginToLoad.isNull())
{
qDebug() << "selectedPlugin: " << pluginToLoad;
if (!pluginToLoad.startsWith('#'))
{
pluginConfig.insert(pluginToLoad, true);
pluginSpec = pluginMap.value(pluginToLoad);
if ( !(pluginSpec && loadPlugin(pluginSpec) ) )
{
qDebug() << "could not load plugin: " << pluginToLoad;
QDir::setCurrent(currentPath);
return false;
}
qDebug() << pluginSpec->getCategory();
if (pluginSpec->getCategory() == "GUI")
{
disablePluginViewer = true;
}
}
else
pluginConfig.insert(pluginToLoad.remove("#"), false);
pluginToLoad = in.readLine();
}
if (!disablePluginViewer)
showPluginViewer();
// reset the current path, because plugin loaders would change
// it during the loading process
QDir::setCurrent(currentPath);
return true;
}
