Coverage for src/robotide/application/pluginloader.py: 87%

1# Copyright 2008-2015 Nokia Networks 

2# Copyright 2016- Robot Framework Foundation 

3# 

4# Licensed under the Apache License, Version 2.0 (the "License"); 

5# you may not use this file except in compliance with the License. 

6# You may obtain a copy of the License at 

7# 

8# http://www.apache.org/licenses/LICENSE-2.0 

9# 

10# Unless required by applicable law or agreed to in writing, software 

11# distributed under the License is distributed on an "AS IS" BASIS, 

12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

13# See the License for the specific language governing permissions and 

14# limitations under the License. 

15 

16import importlib 2 ctx1ab

17import importlib.util 2 ctx1ab

18import inspect 2 ctx1ab

19import os 2 ctx1ab

20 

21from ..context import LOG 2 ctx1ab

22from ..pluginapi import Plugin 2 ctx1ab

23from .pluginconnector import plugin_factory 2 ctx1ab

24 

25 

26class PluginLoader(object): 2 ctx1ab

27 

28 def __init__(self, application, load_dirs, standard_classes): 2 ctx1ab

29 self._load_errors = [] (empty)

30 self.plugins = [plugin_factory(application, cls) for cls in standard_classes + self._find_classes(load_dirs)] (empty)

31 if self._load_errors: 31 ↛ 32line 31 didn't jump to line 32 because the condition on line 31 was never true(empty)

32 LOG.error('\n\n'.join(self._load_errors)) 

33 

34 def enable_plugins(self): 2 ctx1ab

35 for p in self.plugins: 3 ctx1acd

36 p.enable_on_startup() 3 ctx1acd

37 

38 def _find_classes(self, load_dirs): 2 ctx1ab

39 classes = [] (empty)

40 for path in self._find_python_files(load_dirs): (empty)

41 for cls in self._import_classes(path): (empty)

42 if self._is_plugin_class(path, cls): (empty)

43 classes.append(cls) (empty)

44 return classes (empty)

45 

46 def _is_plugin_class(self, path, cls): 2 ctx1ab

47 try: (empty)

48 return issubclass(cls, Plugin) and cls is not Plugin (empty)

49 except Exception as err: 

50 msg = "Finding classes from module '%s' failed: %s" 

51 self._load_errors.append(msg % (path, err)) 

52 

53 def _find_python_files(self, load_dirs): 2 ctx1ab

54 files = [] (empty)

55 for path in load_dirs: (empty)

56 if not os.path.exists(path): (empty)

57 continue (empty)

58 for filename in os.listdir(path): (empty)

59 full_path = os.path.join(path, filename) (empty)

60 if filename[0].isalpha() and \ (empty)

61 os.path.splitext(filename)[1].lower() == ".py": 

62 files.append(full_path) (empty)

63 elif os.path.isdir(full_path): (empty)

64 files.extend(self._find_python_files([full_path])) (empty)

65 return files (empty)

66 

67 def _import_classes(self, path): 2 ctx1ab

68 _, filename = os.path.split(path) (empty)

69 modulename = os.path.splitext(filename)[0] (empty)

70 spec = importlib.util.spec_from_file_location(modulename, path) (empty)

71 if spec is None: 71 ↛ 72line 71 didn't jump to line 72 because the condition on line 71 was never true(empty)

72 return [] 

73 try: (empty)

74 m_module = importlib.util.module_from_spec(spec) (empty)

75 spec.loader.exec_module(m_module) (empty)

76 except Exception as err: 

77 self._load_errors.append("Importing plugin module '%s' failed:\n%s" 

78 % (path, err)) 

79 return [] 

80 return [cls for _, cls in (empty)

81 inspect.getmembers(m_module, predicate=inspect.isclass)]