Refactor ModuleRegistry.dispatch method
Extract _load_eps and _dispatch_macro methods. Change-Id: I6c87229a16e0198f11d199c60f5cf1a5d46770fb
This commit is contained in:
Vsevolod Fedorov
parent
589023d5c4
commit
7db2d13937
@ -236,112 +236,16 @@ class ModuleRegistry(object):
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# Look for a component function defined in an entry point
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eps = self._entry_points_cache.get(component_list_type)
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if eps is None:
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logging.debug("Caching entrypoints for %s" % component_list_type)
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module_eps = []
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# auto build entry points by inferring from base component_types
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mod = pkg_resources.EntryPoint(
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"__all__", entry_point.module_name, dist=entry_point.dist
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eps = self._load_eps(
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component_list_type, component_type, entry_point, eps, name
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)
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Mod = mod.load()
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func_eps = [
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Mod.__dict__.get(a)
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for a in dir(Mod)
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if isinstance(Mod.__dict__.get(a), types.FunctionType)
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]
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for func_ep in func_eps:
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try:
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# extract entry point based on docstring
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name_line = func_ep.__doc__.split("\n")
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if not name_line[0].startswith("yaml:"):
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logger.debug("Ignoring '%s' as an entry point" % name_line)
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continue
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ep_name = name_line[0].split(" ")[1]
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except (AttributeError, IndexError):
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# AttributeError by docstring not being defined as
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# a string to have split called on it.
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# IndexError raised by name_line not containing anything
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# after the 'yaml:' string.
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logger.debug(
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"Not including func '%s' as an entry point" % func_ep.__name__
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)
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continue
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module_eps.append(
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pkg_resources.EntryPoint(
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ep_name,
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entry_point.module_name,
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dist=entry_point.dist,
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attrs=(func_ep.__name__,),
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)
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)
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logger.debug(
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"Adding auto EP '%s=%s:%s'"
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% (ep_name, entry_point.module_name, func_ep.__name__)
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)
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# load from explicitly defined entry points
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module_eps.extend(
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list(
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pkg_resources.iter_entry_points(
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group="jenkins_jobs.{0}".format(component_list_type)
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)
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)
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)
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eps = {}
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for module_ep in module_eps:
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if module_ep.name in eps:
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raise JenkinsJobsException(
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"Duplicate entry point found for component type: "
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"'{0}', '{0}',"
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"name: '{1}'".format(component_type, name)
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)
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eps[module_ep.name] = module_ep.load()
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# cache both sets of entry points
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self._entry_points_cache[component_list_type] = eps
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logger.debug("Cached entry point group %s = %s", component_list_type, eps)
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macro_dict = self.macros.get(component_type, {})
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macro = macro_dict.get(name)
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if macro:
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if name in eps and name not in self.masked_warned:
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self.masked_warned[name] = True
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logger.warning(
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"You have a macro ('%s') defined for '%s' "
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"component type that is masking an inbuilt "
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"definition" % (name, component_type)
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)
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# Expand macro strings only if at least one macro parameter is provided.
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if component_data:
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expander = self._params_expander
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else:
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expander = self._expander
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expander_params = {**component_data, **(job_data or {})}
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elements = macro.elements
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if isinstance(elements, BaseYamlObject):
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# Expand !j2-yaml element right below macro body.
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elements = elements.expand(expander, expander_params)
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for b in elements:
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try:
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element = expander.expand(b, expander_params)
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except JenkinsJobsException as x:
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raise JenkinsJobsException(f"While expanding macro {name!r}: {x}")
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# Pass component_data in as template data to this function
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# so that if the macro is invoked with arguments,
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# the arguments are interpolated into the real defn.
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self.dispatch(
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component_type,
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xml_parent,
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element,
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component_data,
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job_data=job_data,
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)
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self._dispatch_macro(
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component_data, component_type, eps, job_data, macro, name, xml_parent
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)
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elif name in eps:
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func = eps[name]
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kwargs = self._filter_kwargs(func, job_data=job_data)
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@ -351,3 +255,105 @@ class ModuleRegistry(object):
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"Unknown entry point or macro '{0}' "
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"for component type: '{1}'.".format(name, component_type)
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)
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def _dispatch_macro(
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self, component_data, component_type, eps, job_data, macro, name, xml_parent
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):
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if name in eps and name not in self.masked_warned:
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self.masked_warned[name] = True
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logger.warning(
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"You have a macro ('%s') defined for '%s' "
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"component type that is masking an inbuilt "
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"definition" % (name, component_type)
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)
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# Expand macro strings only if at least one macro parameter is provided.
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if component_data:
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expander = self._params_expander
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else:
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expander = self._expander
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expander_params = {**component_data, **(job_data or {})}
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elements = macro.elements
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if isinstance(elements, BaseYamlObject):
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# Expand !j2-yaml element right below macro body.
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elements = elements.expand(expander, expander_params)
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for b in elements:
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try:
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element = expander.expand(b, expander_params)
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except JenkinsJobsException as x:
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raise JenkinsJobsException(f"While expanding macro {name!r}: {x}")
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# Pass component_data in as template data to this function
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# so that if the macro is invoked with arguments,
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# the arguments are interpolated into the real defn.
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self.dispatch(
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component_type,
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xml_parent,
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element,
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component_data,
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job_data=job_data,
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)
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def _load_eps(self, component_list_type, component_type, entry_point, eps, name):
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logging.debug("Caching entrypoints for %s" % component_list_type)
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module_eps = []
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# auto build entry points by inferring from base component_types
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mod = pkg_resources.EntryPoint(
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"__all__", entry_point.module_name, dist=entry_point.dist
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)
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Mod = mod.load()
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func_eps = [
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Mod.__dict__.get(a)
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for a in dir(Mod)
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if isinstance(Mod.__dict__.get(a), types.FunctionType)
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]
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for func_ep in func_eps:
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try:
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# extract entry point based on docstring
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name_line = func_ep.__doc__.split("\n")
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if not name_line[0].startswith("yaml:"):
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logger.debug("Ignoring '%s' as an entry point" % name_line)
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continue
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ep_name = name_line[0].split(" ")[1]
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except (AttributeError, IndexError):
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# AttributeError by docstring not being defined as
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# a string to have split called on it.
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# IndexError raised by name_line not containing anything
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# after the 'yaml:' string.
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logger.debug(
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"Not including func '%s' as an entry point" % func_ep.__name__
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)
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continue
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module_eps.append(
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pkg_resources.EntryPoint(
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ep_name,
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entry_point.module_name,
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dist=entry_point.dist,
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attrs=(func_ep.__name__,),
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)
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)
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logger.debug(
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"Adding auto EP '%s=%s:%s'"
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% (ep_name, entry_point.module_name, func_ep.__name__)
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)
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# load from explicitly defined entry points
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module_eps.extend(
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list(
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pkg_resources.iter_entry_points(
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group="jenkins_jobs.{0}".format(component_list_type)
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)
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)
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)
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eps = {}
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for module_ep in module_eps:
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if module_ep.name in eps:
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raise JenkinsJobsException(
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"Duplicate entry point found for component type: "
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"'{0}', '{0}',"
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"name: '{1}'".format(component_type, name)
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)
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eps[module_ep.name] = module_ep.load()
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# cache both sets of entry points
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self._entry_points_cache[component_list_type] = eps
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logger.debug("Cached entry point group %s = %s", component_list_type, eps)
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return eps
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