import types import bb # This class is responsible for loading a test target controller class TestTargetLoader: # Search oeqa.controllers module directory for and return a controller # corresponding to the given target name. # AttributeError raised if not found. # ImportError raised if a provided module can not be imported. def get_controller_module(self, target, bbpath): controllerslist = self.get_controller_modulenames(bbpath) bb.note("Available controller modules: %s" % str(controllerslist)) controller = self.load_controller_from_name(target, controllerslist) return controller # Return a list of all python modules in lib/oeqa/controllers for each # layer in bbpath def get_controller_modulenames(self, bbpath): controllerslist = [] def add_controller_list(path): if not os.path.exists(os.path.join(path, '__init__.py')): bb.fatal('Controllers directory %s exists but is missing __init__.py' % path) files = sorted([f for f in os.listdir(path) if f.endswith('.py') and not f.startswith('_')]) for f in files: module = 'oeqa.controllers.' + f[:-3] if module not in controllerslist: controllerslist.append(module) else: bb.warn("Duplicate controller module found for %s, only one added. Layers should create unique controller module names" % module) for p in bbpath: controllerpath = os.path.join(p, 'lib', 'oeqa', 'controllers') bb.debug(2, 'Searching for target controllers in %s' % controllerpath) if os.path.exists(controllerpath): add_controller_list(controllerpath) return controllerslist # Search for and return a controller from given target name and # set of module names. # Raise AttributeError if not found. # Raise ImportError if a provided module can not be imported def load_controller_from_name(self, target, modulenames): for name in modulenames: obj = self.load_controller_from_module(target, name) if obj: return obj raise AttributeError("Unable to load {0} from available modules: {1}".format(target, str(modulenames))) # Search for and return a controller or None from given module name def load_controller_from_module(self, target, modulename): obj = None # import module, allowing it to raise import exception module = __import__(modulename, globals(), locals(), [target]) # look for target class in the module, catching any exceptions as it # is valid that a module may not have the target class. try: obj = getattr(module, target) if obj: from oeqa.targetcontrol import BaseTarget if (not isinstance(obj, (type, types.ClassType))): bb.warn("Target {0} found, but not of type Class".format(target)) if( not issubclass(obj, BaseTarget)): bb.warn("Target {0} found, but subclass is not BaseTarget".format(target)) except: obj = None return obj