Move the mixins in their own module

1 files changed, 207 insertions, 0 deletions

diff --git a/gitlab/mixins.py b/gitlab/mixins.py
new file mode 100644
index 0000000..7612276
--- /dev/null
+++ b/gitlab/mixins.py
@@ -0,0 +1,207 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2013-2017 Gauvain Pocentek <gauvain@pocentek.net>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from gitlab import base
+
+
+class GetMixin(object):
+    def get(self, id, **kwargs):
+        """Retrieve a single object.
+
+        Args:
+            id (int or str): ID of the object to retrieve
+            **kwargs: Extra data to send to the Gitlab server (e.g. sudo)
+
+        Returns:
+            object: The generated RESTObject.
+
+        Raises:
+            GitlabGetError: If the server cannot perform the request.
+        """
+        path = '%s/%s' % (self._path, id)
+        server_data = self.gitlab.http_get(path, **kwargs)
+        return self._obj_cls(self, server_data)
+
+
+class GetWithoutIdMixin(object):
+    def get(self, **kwargs):
+        """Retrieve a single object.
+
+        Args:
+            **kwargs: Extra data to send to the Gitlab server (e.g. sudo)
+
+        Returns:
+            object: The generated RESTObject.
+
+        Raises:
+            GitlabGetError: If the server cannot perform the request.
+        """
+        server_data = self.gitlab.http_get(self._path, **kwargs)
+        return self._obj_cls(self, server_data)
+
+
+class ListMixin(object):
+    def list(self, **kwargs):
+        """Retrieves a list of objects.
+
+        Args:
+            **kwargs: Extra data to send to the Gitlab server (e.g. sudo).
+                      If ``all`` is passed and set to True, the entire list of
+                      objects will be returned.
+
+        Returns:
+            RESTObjectList: Generator going through the list of objects, making
+                            queries to the server when required.
+                            If ``all=True`` is passed as argument, returns
+                            list(RESTObjectList).
+        """
+
+        obj = self.gitlab.http_list(self._path, **kwargs)
+        if isinstance(obj, list):
+            return [self._obj_cls(self, item) for item in obj]
+        else:
+            return base.RESTObjectList(self, self._obj_cls, obj)
+
+
+class GetFromListMixin(ListMixin):
+    def get(self, id, **kwargs):
+        """Retrieve a single object.
+
+        Args:
+            id (int or str): ID of the object to retrieve
+            **kwargs: Extra data to send to the Gitlab server (e.g. sudo)
+
+        Returns:
+            object: The generated RESTObject.
+
+        Raises:
+            GitlabGetError: If the server cannot perform the request.
+        """
+        gen = self.list()
+        for obj in gen:
+            if str(obj.get_id()) == str(id):
+                return obj
+
+
+class RetrieveMixin(ListMixin, GetMixin):
+    pass
+
+
+class CreateMixin(object):
+    def _check_missing_attrs(self, data):
+        required, optional = self.get_create_attrs()
+        missing = []
+        for attr in required:
+            if attr not in data:
+                missing.append(attr)
+                continue
+        if missing:
+            raise AttributeError("Missing attributes: %s" % ", ".join(missing))
+
+    def get_create_attrs(self):
+        """Returns the required and optional arguments.
+
+        Returns:
+            tuple: 2 items: list of required arguments and list of optional
+                   arguments for creation (in that order)
+        """
+        if hasattr(self, '_create_attrs'):
+            return (self._create_attrs['required'],
+                    self._create_attrs['optional'])
+        return (tuple(), tuple())
+
+    def create(self, data, **kwargs):
+        """Created a new object.
+
+        Args:
+            data (dict): parameters to send to the server to create the
+                         resource
+            **kwargs: Extra data to send to the Gitlab server (e.g. sudo)
+
+        Returns:
+            RESTObject: a new instance of the manage object class build with
+                        the data sent by the server
+        """
+        self._check_missing_attrs(data)
+        if hasattr(self, '_sanitize_data'):
+            data = self._sanitize_data(data, 'create')
+        server_data = self.gitlab.http_post(self._path, post_data=data, **kwargs)
+        return self._obj_cls(self, server_data)
+
+
+class UpdateMixin(object):
+    def _check_missing_attrs(self, data):
+        required, optional = self.get_update_attrs()
+        missing = []
+        for attr in required:
+            if attr not in data:
+                missing.append(attr)
+                continue
+        if missing:
+            raise AttributeError("Missing attributes: %s" % ", ".join(missing))
+
+    def get_update_attrs(self):
+        """Returns the required and optional arguments.
+
+        Returns:
+            tuple: 2 items: list of required arguments and list of optional
+                   arguments for update (in that order)
+        """
+        if hasattr(self, '_update_attrs'):
+            return (self._update_attrs['required'],
+                    self._update_attrs['optional'])
+        return (tuple(), tuple())
+
+    def update(self, id=None, new_data={}, **kwargs):
+        """Update an object on the server.
+
+        Args:
+            id: ID of the object to update (can be None if not required)
+            new_data: the update data for the object
+            **kwargs: Extra data to send to the Gitlab server (e.g. sudo)
+
+        Returns:
+            dict: The new object data (*not* a RESTObject)
+        """
+
+        if id is None:
+            path = self._path
+        else:
+            path = '%s/%s' % (self._path, id)
+
+        self._check_missing_attrs(new_data)
+        if hasattr(self, '_sanitize_data'):
+            data = self._sanitize_data(new_data, 'update')
+        server_data = self.gitlab.http_put(self._path, post_data=data,
+                                           **kwargs)
+        return server_data
+
+
+class DeleteMixin(object):
+    def delete(self, id, **kwargs):
+        """Deletes an object on the server.
+
+        Args:
+            id: ID of the object to delete
+            **kwargs: Extra data to send to the Gitlab server (e.g. sudo)
+        """
+        path = '%s/%s' % (self._path, id)
+        self.gitlab.http_delete(path, **kwargs)
+
+
+class CRUDMixin(GetMixin, ListMixin, CreateMixin, UpdateMixin, DeleteMixin):
+    pass