def _get_module_with_soft_routing(self, module_name, version):
"""Uses soft-routing to find the specified module.
Soft-routing is an attempt to match the production resolution order, which
is slightly more permissive than the Modules API behavior. Here are the
rules allowed:
1. If a module is requested that doesn't exist, use the default module.
2. If a module is requested that doesn't exist, and there is no default
module, use any module.
Args:
module_name: The name of the module.
version: The version id.
Returns:
Module object.
Raises:
request_info.ModuleDoesNotExistError: The module doesn't exist.
request_info.VersionDoesNotExistError: The version doesn't exist.
"""
if not module_name or module_name not in self._module_name_to_module:
if appinfo.DEFAULT_MODULE in self._module_name_to_module:
module_name = appinfo.DEFAULT_MODULE
elif self._module_name_to_module:
# If there is no default module, but there are other modules, take any.
# This is somewhat of a hack, and can be removed if we ever enforce the
# existence of a default module.
module_name = self._module_name_to_module.keys()[0]
else:
raise request_info.ModuleDoesNotExistError(module_name)
if (version is not None and version !=
self._module_configurations[module_name].major_version):
raise request_info.VersionDoesNotExistError()
return self._module_name_to_module[module_name]
def _get_server(self, server_name, version):
if not server_name:
server_name = 'default'
if server_name not in self._server_name_to_server:
raise request_info.ServerDoesNotExistError(server_name)
elif (version is not None and version !=
self._server_configurations[server_name].major_version):
raise request_info.VersionDoesNotExistError()
return self._server_name_to_server[server_name]
def _get_module(self, module_name, version):
if not module_name or module_name not in self._module_name_to_module:
if 'default' in self._module_name_to_module:
module_name = 'default'
elif self._module_name_to_module:
# If there is no default module, but there are other modules, take any.
# This is somewhat of a hack, and can be removed if we ever enforce the
# existence of a default module.
module_name = self._module_name_to_module.keys()[0]
else:
raise request_info.ModuleDoesNotExistError(module_name)
elif (version is not None and
version != self._module_configurations[module_name].major_version):
raise request_info.VersionDoesNotExistError()
return self._module_name_to_module[module_name]
def _get_module(self, module_name, version):
"""Attempts to find the specified module.
Args:
module_name: The name of the module.
version: The version id.
Returns:
Module object.
Raises:
request_info.ModuleDoesNotExistError: The module doesn't exist.
request_info.VersionDoesNotExistError: The version doesn't exist.
"""
if not module_name:
module_name = appinfo.DEFAULT_MODULE
if module_name not in self._module_name_to_module:
raise request_info.ModuleDoesNotExistError()
if (version is not None and version !=
self._module_configurations[module_name].major_version):
raise request_info.VersionDoesNotExistError()
return self._module_name_to_module[module_name]
