94 lines
3 KiB
Python
94 lines
3 KiB
Python
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# Copyright 2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"). You
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# may not use this file except in compliance with the License. A copy of
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# the License is located at
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#
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# http://aws.amazon.com/apache2.0/
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#
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# or in the "license" file accompanying this file. This file is
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# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
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# ANY KIND, either express or implied. See the License for the specific
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# language governing permissions and limitations under the License.
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import sys
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from collections import namedtuple
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_ServiceContext = namedtuple(
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'ServiceContext',
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['service_name', 'service_model', 'service_waiter_model',
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'resource_json_definitions']
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)
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class ServiceContext(_ServiceContext):
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"""Provides important service-wide, read-only information about a service
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:type service_name: str
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:param service_name: The name of the service
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:type service_model: :py:class:`botocore.model.ServiceModel`
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:param service_model: The model of the service.
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:type service_waiter_model: :py:class:`botocore.waiter.WaiterModel` or
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a waiter model-like object such as
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:py:class:`boto3.utils.LazyLoadedWaiterModel`
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:param service_waiter_model: The waiter model of the service.
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:type resource_json_definitions: dict
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:param resource_json_definitions: The loaded json models of all resource
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shapes for a service. It is equivalient of loading a
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``resource-1.json`` and retrieving the value at the key "resources".
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"""
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pass
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def import_module(name):
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"""Import module given a name.
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Does not support relative imports.
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"""
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__import__(name)
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return sys.modules[name]
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def lazy_call(full_name, **kwargs):
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parent_kwargs = kwargs
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def _handler(**kwargs):
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module, function_name = full_name.rsplit('.', 1)
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module = import_module(module)
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kwargs.update(parent_kwargs)
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return getattr(module, function_name)(**kwargs)
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return _handler
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def inject_attribute(class_attributes, name, value):
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if name in class_attributes:
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raise RuntimeError(
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'Cannot inject class attribute "%s", attribute '
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'already exists in class dict.' % name)
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else:
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class_attributes[name] = value
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class LazyLoadedWaiterModel(object):
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"""A lazily loaded waiter model
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This does not load the service waiter model until an attempt is made
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to retrieve the waiter model for a specific waiter. This is helpful
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in docstring generation where we do not need to actually need to grab
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the waiter-2.json until it is accessed through a ``get_waiter`` call
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when the docstring is generated/accessed.
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"""
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def __init__(self, bc_session, service_name, api_version):
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self._session = bc_session
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self._service_name = service_name
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self._api_version = api_version
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def get_waiter(self, waiter_name):
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return self._session.get_waiter_model(
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self._service_name, self._api_version).get_waiter(waiter_name)
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