Add support for project and group custom variables

implements parts of #367

6 files changed, 132 insertions, 34 deletions

diff --git a/docs/gl_objects/groups.rst b/docs/gl_objects/groups.rst
index 9006ceb..9b5edb0 100644
--- a/docs/gl_objects/groups.rst
+++ b/docs/gl_objects/groups.rst
@@ -91,6 +91,41 @@ List the subgroups for a group::
 
     subgroups = group.subgroups.list()
 
+Group custom attributes
+=======================
+
+Reference
+---------
+
+* v4 API:
+
+  + :class:`gitlab.v4.objects.GroupCustomAttribute`
+  + :class:`gitlab.v4.objects.GroupCustomAttributeManager`
+  + :attr:`gitlab.v4.objects.Group.customattributes`
+
+* GitLab API: https://docs.gitlab.com/ce/api/custom_attributes.html
+
+Examples
+--------
+
+List custom attributes for a group::
+
+    attrs = group.customattributes.list()
+
+Get a custom attribute for a group::
+
+    attr = group.customattributes.get(attr_key)
+
+Set (create or update) a custom attribute for a group::
+
+    attr = group.customattributes.set(attr_key, attr_value)
+
+Delete a custom attribute for a group::
+
+    attr.delete()
+    # or
+    group.customattributes.delete(attr_key)
+
 Group members
 =============
 
diff --git a/docs/gl_objects/projects.rst b/docs/gl_objects/projects.rst
index aaf0699..b7c5d78 100644
--- a/docs/gl_objects/projects.rst
+++ b/docs/gl_objects/projects.rst
@@ -172,6 +172,41 @@ Get a list of users for the repository:
    :start-after: # users list
    :end-before: # end users list
 
+Project custom attributes
+=========================
+
+Reference
+---------
+
+* v4 API:
+
+  + :class:`gitlab.v4.objects.ProjectCustomAttribute`
+  + :class:`gitlab.v4.objects.ProjectCustomAttributeManager`
+  + :attr:`gitlab.v4.objects.Project.customattributes`
+
+* GitLab API: https://docs.gitlab.com/ce/api/custom_attributes.html
+
+Examples
+--------
+
+List custom attributes for a project::
+
+    attrs = project.customattributes.list()
+
+Get a custom attribute for a project::
+
+    attr = project.customattributes.get(attr_key)
+
+Set (create or update) a custom attribute for a project::
+
+    attr = project.customattributes.set(attr_key, attr_value)
+
+Delete a custom attribute for a project::
+
+    attr.delete()
+    # or
+    project.customattributes.delete(attr_key)
+
 Project files
 =============
 
diff --git a/docs/gl_objects/users.py b/docs/gl_objects/users.py
index e452217..842e35d 100644
--- a/docs/gl_objects/users.py
+++ b/docs/gl_objects/users.py
@@ -98,24 +98,6 @@ gl.auth()
 current_user = gl.user
 # end currentuser get
 
-# ca list
-attrs = user.customeattributes.list()
-# end ca list
-
-# ca get
-attr = user.customeattributes.get(attr_key)
-# end ca get
-
-# ca set
-attr = user.customeattributes.set(attr_key, attr_value)
-# end ca set
-
-# ca delete
-attr.delete()
-# or
-user.customeattributes.delete(attr_key)
-# end ca delete
-
 # it list
 i_t = user.impersonationtokens.list(state='active')
 i_t = user.impersonationtokens.list(state='inactive')
diff --git a/docs/gl_objects/users.rst b/docs/gl_objects/users.rst
index e520c9b..e57daf6 100644
--- a/docs/gl_objects/users.rst
+++ b/docs/gl_objects/users.rst
@@ -89,29 +89,23 @@ References
 Examples
 --------
 
-List custom attributes for a user:
+List custom attributes for a user::
 
-.. literalinclude:: users.py
-   :start-after: # ca list
-   :end-before: # end ca list
+    attrs = user.customattributes.list()
 
-Get a custom attribute for a user:
+Get a custom attribute for a user::
 
-.. literalinclude:: users.py
-   :start-after: # ca get
-   :end-before: # end ca get
+    attr = user.customattributes.get(attr_key)
 
-Set (create or update) a custom attribute for a user:
+Set (create or update) a custom attribute for a user::
 
-.. literalinclude:: users.py
-   :start-after: # ca set
-   :end-before: # end ca set
+    attr = user.customattributes.set(attr_key, attr_value)
 
-Delete a custom attribute for a user:
+Delete a custom attribute for a user::
 
-.. literalinclude:: users.py
-   :start-after: # ca list
-   :end-before: # end ca list
+    attr.delete()
+    # or
+    user.customattributes.delete(attr_key)
 
 User impersonation tokens
 =========================
diff --git a/gitlab/v4/objects.py b/gitlab/v4/objects.py
index 0a0cebd..106b102 100644
--- a/gitlab/v4/objects.py
+++ b/gitlab/v4/objects.py
@@ -461,6 +461,17 @@ class GroupAccessRequestManager(GetFromListMixin, CreateMixin, DeleteMixin,
     _from_parent_attrs = {'group_id': 'id'}
 
 
+class GroupCustomAttribute(ObjectDeleteMixin, RESTObject):
+    _id_attr = 'key'
+
+
+class GroupCustomAttributeManager(RetrieveMixin, SetMixin, DeleteMixin,
+                                  RESTManager):
+    _path = '/groups/%(group_id)s/custom_attributes'
+    _obj_cls = GroupCustomAttribute
+    _from_parent_attrs = {'group_id': 'id'}
+
+
 class GroupIssue(RESTObject):
     pass
 
@@ -614,6 +625,7 @@ class Group(SaveMixin, ObjectDeleteMixin, RESTObject):
     _short_print_attr = 'name'
     _managers = (
         ('accessrequests', 'GroupAccessRequestManager'),
+        ('customattributes', 'GroupCustomAttributeManager'),
         ('issues', 'GroupIssueManager'),
         ('members', 'GroupMemberManager'),
         ('milestones', 'GroupMilestoneManager'),
@@ -839,6 +851,17 @@ class ProjectBranchManager(NoUpdateMixin, RESTManager):
     _create_attrs = (('branch', 'ref'), tuple())
 
 
+class ProjectCustomAttribute(ObjectDeleteMixin, RESTObject):
+    _id_attr = 'key'
+
+
+class ProjectCustomAttributeManager(RetrieveMixin, SetMixin, DeleteMixin,
+                                    RESTManager):
+    _path = '/projects/%(project_id)s/custom_attributes'
+    _obj_cls = ProjectCustomAttribute
+    _from_parent_attrs = {'project_id': 'id'}
+
+
 class ProjectJob(RESTObject):
     @cli.register_custom_action('ProjectJob')
     @exc.on_http_error(exc.GitlabJobCancelError)
@@ -2200,6 +2223,7 @@ class Project(SaveMixin, ObjectDeleteMixin, RESTObject):
         ('branches', 'ProjectBranchManager'),
         ('jobs', 'ProjectJobManager'),
         ('commits', 'ProjectCommitManager'),
+        ('customattributes', 'ProjectCustomAttributeManager'),
         ('deployments', 'ProjectDeploymentManager'),
         ('environments', 'ProjectEnvironmentManager'),
         ('events', 'ProjectEventManager'),
diff --git a/tools/python_test_v4.py b/tools/python_test_v4.py
index 9a3d5e7..4af9ea9 100644
--- a/tools/python_test_v4.py
+++ b/tools/python_test_v4.py
@@ -230,6 +230,20 @@ assert(member.access_level == gitlab.Group.OWNER_ACCESS)
 
 group2.members.delete(gl.user.id)
 
+# group custom attributes
+attrs = group2.customattributes.list()
+assert(len(attrs) == 0)
+attr = group2.customattributes.set('key', 'value1')
+assert(attr.key == 'key')
+assert(attr.value == 'value1')
+assert(len(group2.customattributes.list()) == 1)
+attr = group2.customattributes.set('key', 'value2')
+attr = group2.customattributes.get('key')
+assert(attr.value == 'value2')
+assert(len(group2.customattributes.list()) == 1)
+attr.delete()
+assert(len(group2.customattributes.list()) == 0)
+
 # group notification settings
 settings = group2.notificationsettings.get()
 settings.level = 'disabled'
@@ -285,6 +299,20 @@ assert(len(l1) == 1)
 assert(len(l2) == 1)
 assert(l1[0].id != l2[0].id)
 
+# group custom attributes
+attrs = admin_project.customattributes.list()
+assert(len(attrs) == 0)
+attr = admin_project.customattributes.set('key', 'value1')
+assert(attr.key == 'key')
+assert(attr.value == 'value1')
+assert(len(admin_project.customattributes.list()) == 1)
+attr = admin_project.customattributes.set('key', 'value2')
+attr = admin_project.customattributes.get('key')
+assert(attr.value == 'value2')
+assert(len(admin_project.customattributes.list()) == 1)
+attr.delete()
+assert(len(admin_project.customattributes.list()) == 0)
+
 # project pages domains
 domain = admin_project.pagesdomains.create({'domain': 'foo.domain.com'})
 assert(len(admin_project.pagesdomains.list()) == 1)