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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
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