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