def loadPlugins(plugins_dir, plugins_to_load=None):
global pluginsLoaded
alreadyLoadedPlugins = pluginsLoaded.get(plugins_dir)
i = 0
if alreadyLoadedPlugins:
logger.debug("Plugins {} are already loaded from plugins_dir: {}".format(
alreadyLoadedPlugins, plugins_dir))
else:
logger.debug(
"Plugin loading started to load plugins from plugins_dir: {}".format(
plugins_dir))
if not os.path.exists(plugins_dir):
os.makedirs(plugins_dir)
logger.debug("Plugin directory created at: {}".format(
plugins_dir))
if plugins_to_load is not None:
for pluginName in plugins_to_load:
pluginPath = os.path.expanduser(
os.path.join(plugins_dir, pluginName + ".py"))
try:
if os.path.exists(pluginPath):
spec = spec_from_file_location(
pluginName,
pluginPath)
plugin = module_from_spec(spec)
spec.loader.exec_module(plugin)
if plugins_dir in pluginsLoaded:
pluginsLoaded[plugins_dir].add(pluginName)
else:
pluginsLoaded[plugins_dir] = {pluginName}
i += 1
else:
if not pluginsNotFound.get(pluginPath):
logger.warning(
"Note: Plugin file does not exists: {}. "
"Create plugin file if you want to load it" .format(pluginPath), extra={
"cli": False})
pluginsNotFound[pluginPath] = "Notified"
except Exception as ex:
# TODO: Is this strategy ok to catch any exception and
# just print the error and continue,
# or it should fail if there is error in plugin loading
logger.warning(
"** Error occurred during loading plugin {}: {}"
.format(pluginPath, str(ex)))
logger.debug(
"Total plugins loaded from plugins_dir {} are : {}".format(plugins_dir, i))
return i
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