objects.py

# -*- 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 __future__ import print_function
from __future__ import absolute_import
import base64

from gitlab.base import *  # noqa
from gitlab import cli
from gitlab.exceptions import *  # noqa
from gitlab.mixins import *  # noqa
from gitlab import types
from gitlab import utils

VISIBILITY_PRIVATE = 'private'
VISIBILITY_INTERNAL = 'internal'
VISIBILITY_PUBLIC = 'public'

ACCESS_GUEST = 10
ACCESS_REPORTER = 20
ACCESS_DEVELOPER = 30
ACCESS_MASTER = 40
ACCESS_OWNER = 50


class SidekiqManager(RESTManager):
    """Manager for the Sidekiq methods.

    This manager doesn't actually manage objects but provides helper fonction
    for the sidekiq metrics API.
    """

    @cli.register_custom_action('SidekiqManager')
    @exc.on_http_error(exc.GitlabGetError)
    def queue_metrics(self, **kwargs):
        """Return the registred queues information.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the information couldn't be retrieved

        Returns:
            dict: Information about the Sidekiq queues
        """
        return self.gitlab.http_get('/sidekiq/queue_metrics', **kwargs)

    @cli.register_custom_action('SidekiqManager')
    @exc.on_http_error(exc.GitlabGetError)
    def process_metrics(self, **kwargs):
        """Return the registred sidekiq workers.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the information couldn't be retrieved

        Returns:
            dict: Information about the register Sidekiq worker
        """
        return self.gitlab.http_get('/sidekiq/process_metrics', **kwargs)

    @cli.register_custom_action('SidekiqManager')
    @exc.on_http_error(exc.GitlabGetError)
    def job_stats(self, **kwargs):
        """Return statistics about the jobs performed.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the information couldn't be retrieved

        Returns:
            dict: Statistics about the Sidekiq jobs performed
        """
        return self.gitlab.http_get('/sidekiq/job_stats', **kwargs)

    @cli.register_custom_action('SidekiqManager')
    @exc.on_http_error(exc.GitlabGetError)
    def compound_metrics(self, **kwargs):
        """Return all available metrics and statistics.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the information couldn't be retrieved

        Returns:
            dict: All available Sidekiq metrics and statistics
        """
        return self.gitlab.http_get('/sidekiq/compound_metrics', **kwargs)


class Event(RESTObject):
    _id_attr = None
    _short_print_attr = 'target_title'


class EventManager(ListMixin, RESTManager):
    _path = '/events'
    _obj_cls = Event
    _list_filters = ('action', 'target_type', 'before', 'after', 'sort')


class UserActivities(RESTObject):
    _id_attr = 'username'


class UserActivitiesManager(ListMixin, RESTManager):
    _path = '/user/activities'
    _obj_cls = UserActivities


class UserCustomAttribute(ObjectDeleteMixin, RESTObject):
    _id_attr = 'key'


class UserCustomAttributeManager(RetrieveMixin, SetMixin, DeleteMixin,
                                 RESTManager):
    _path = '/users/%(user_id)s/custom_attributes'
    _obj_cls = UserCustomAttribute
    _from_parent_attrs = {'user_id': 'id'}


class UserEmail(ObjectDeleteMixin, RESTObject):
    _short_print_attr = 'email'


class UserEmailManager(RetrieveMixin, CreateMixin, DeleteMixin, RESTManager):
    _path = '/users/%(user_id)s/emails'
    _obj_cls = UserEmail
    _from_parent_attrs = {'user_id': 'id'}
    _create_attrs = (('email', ), tuple())


class UserEvent(Event):
    pass


class UserEventManager(EventManager):
    _path = '/users/%(user_id)s/events'
    _obj_cls = UserEvent
    _from_parent_attrs = {'user_id': 'id'}


class UserGPGKey(ObjectDeleteMixin, RESTObject):
    pass


class UserGPGKeyManager(RetrieveMixin, CreateMixin, DeleteMixin, RESTManager):
    _path = '/users/%(user_id)s/gpg_keys'
    _obj_cls = UserGPGKey
    _from_parent_attrs = {'user_id': 'id'}
    _create_attrs = (('key',), tuple())


class UserKey(ObjectDeleteMixin, RESTObject):
    pass


class UserKeyManager(ListMixin, CreateMixin, DeleteMixin, RESTManager):
    _path = '/users/%(user_id)s/keys'
    _obj_cls = UserKey
    _from_parent_attrs = {'user_id': 'id'}
    _create_attrs = (('title', 'key'), tuple())


class UserImpersonationToken(ObjectDeleteMixin, RESTObject):
    pass


class UserImpersonationTokenManager(NoUpdateMixin, RESTManager):
    _path = '/users/%(user_id)s/impersonation_tokens'
    _obj_cls = UserImpersonationToken
    _from_parent_attrs = {'user_id': 'id'}
    _create_attrs = (('name', 'scopes'), ('expires_at',))
    _list_filters = ('state',)


class UserProject(RESTObject):
    pass


class UserProjectManager(ListMixin, CreateMixin, RESTManager):
    _path = '/projects/user/%(user_id)s'
    _obj_cls = UserProject
    _from_parent_attrs = {'user_id': 'id'}
    _create_attrs = (
        ('name', ),
        ('default_branch', 'issues_enabled', 'wall_enabled',
         'merge_requests_enabled', 'wiki_enabled', 'snippets_enabled',
         'public', 'visibility', 'description', 'builds_enabled',
         'public_builds', 'import_url', 'only_allow_merge_if_build_succeeds')
    )
    _list_filters = ('archived', 'visibility', 'order_by', 'sort', 'search',
                     'simple', 'owned', 'membership', 'starred', 'statistics',
                     'with_issues_enabled', 'with_merge_requests_enabled')

    def list(self, **kwargs):
        """Retrieve a list of objects.

        Args:
            all (bool): If True, return all the items, without pagination
            per_page (int): Number of items to retrieve per request
            page (int): ID of the page to return (starts with page 1)
            as_list (bool): If set to False and no pagination option is
                defined, return a generator instead of a list
            **kwargs: Extra options to send to the server (e.g. sudo)

        Returns:
            list: The list of objects, or a generator if `as_list` is False

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabListError: If the server cannot perform the request
        """

        path = '/users/%s/projects' % self._parent.id
        return ListMixin.list(self, path=path, **kwargs)


class User(SaveMixin, ObjectDeleteMixin, RESTObject):
    _short_print_attr = 'username'
    _managers = (
        ('customattributes', 'UserCustomAttributeManager'),
        ('emails', 'UserEmailManager'),
        ('events', 'UserEventManager'),
        ('gpgkeys', 'UserGPGKeyManager'),
        ('impersonationtokens', 'UserImpersonationTokenManager'),
        ('keys', 'UserKeyManager'),
        ('projects', 'UserProjectManager'),
    )

    @cli.register_custom_action('User')
    @exc.on_http_error(exc.GitlabBlockError)
    def block(self, **kwargs):
        """Block the user.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabBlockError: If the user could not be blocked

        Returns:
            bool: Whether the user status has been changed
        """
        path = '/users/%s/block' % self.id
        server_data = self.manager.gitlab.http_post(path, **kwargs)
        if server_data is True:
            self._attrs['state'] = 'blocked'
        return server_data

    @cli.register_custom_action('User')
    @exc.on_http_error(exc.GitlabUnblockError)
    def unblock(self, **kwargs):
        """Unblock the user.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabUnblockError: If the user could not be unblocked

        Returns:
            bool: Whether the user status has been changed
        """
        path = '/users/%s/unblock' % self.id
        server_data = self.manager.gitlab.http_post(path, **kwargs)
        if server_data is True:
            self._attrs['state'] = 'active'
        return server_data


class UserManager(CRUDMixin, RESTManager):
    _path = '/users'
    _obj_cls = User

    _list_filters = ('active', 'blocked', 'username', 'extern_uid', 'provider',
                     'external', 'search', 'custom_attributes')
    _create_attrs = (
        tuple(),
        ('email', 'username', 'name', 'password', 'reset_password', 'skype',
         'linkedin', 'twitter', 'projects_limit', 'extern_uid', 'provider',
         'bio', 'admin', 'can_create_group', 'website_url',
         'skip_confirmation', 'external', 'organization', 'location', 'avatar')
    )
    _update_attrs = (
        ('email', 'username', 'name'),
        ('password', 'skype', 'linkedin', 'twitter', 'projects_limit',
         'extern_uid', 'provider', 'bio', 'admin', 'can_create_group',
         'website_url', 'skip_confirmation', 'external', 'organization',
         'location', 'avatar')
    )
    _types = {
        'confirm': types.LowercaseStringAttribute,
        'avatar': types.ImageAttribute,
    }


class CurrentUserEmail(ObjectDeleteMixin, RESTObject):
    _short_print_attr = 'email'


class CurrentUserEmailManager(RetrieveMixin, CreateMixin, DeleteMixin,
                              RESTManager):
    _path = '/user/emails'
    _obj_cls = CurrentUserEmail
    _create_attrs = (('email', ), tuple())


class CurrentUserGPGKey(ObjectDeleteMixin, RESTObject):
    pass


class CurrentUserGPGKeyManager(RetrieveMixin, CreateMixin, DeleteMixin,
                               RESTManager):
    _path = '/user/gpg_keys'
    _obj_cls = CurrentUserGPGKey
    _create_attrs = (('key',), tuple())


class CurrentUserKey(ObjectDeleteMixin, RESTObject):
    _short_print_attr = 'title'


class CurrentUserKeyManager(RetrieveMixin, CreateMixin, DeleteMixin,
                            RESTManager):
    _path = '/user/keys'
    _obj_cls = CurrentUserKey
    _create_attrs = (('title', 'key'), tuple())


class CurrentUser(RESTObject):
    _id_attr = None
    _short_print_attr = 'username'
    _managers = (
        ('emails', 'CurrentUserEmailManager'),
        ('gpgkeys', 'CurrentUserGPGKeyManager'),
        ('keys', 'CurrentUserKeyManager'),
    )


class CurrentUserManager(GetWithoutIdMixin, RESTManager):
    _path = '/user'
    _obj_cls = CurrentUser


class ApplicationSettings(SaveMixin, RESTObject):
    _id_attr = None


class ApplicationSettingsManager(GetWithoutIdMixin, UpdateMixin, RESTManager):
    _path = '/application/settings'
    _obj_cls = ApplicationSettings
    _update_attrs = (
        tuple(),
        ('admin_notification_email', 'after_sign_out_path',
         'after_sign_up_text', 'akismet_api_key', 'akismet_enabled',
         'circuitbreaker_access_retries', 'circuitbreaker_check_interval',
         'circuitbreaker_failure_count_threshold',
         'circuitbreaker_failure_reset_time', 'circuitbreaker_storage_timeout',
         'clientside_sentry_dsn', 'clientside_sentry_enabled',
         'container_registry_token_expire_delay',
         'default_artifacts_expire_in', 'default_branch_protection',
         'default_group_visibility', 'default_project_visibility',
         'default_projects_limit', 'default_snippet_visibility',
         'disabled_oauth_sign_in_sources', 'domain_blacklist_enabled',
         'domain_blacklist', 'domain_whitelist', 'dsa_key_restriction',
         'ecdsa_key_restriction', 'ed25519_key_restriction',
         'email_author_in_body', 'enabled_git_access_protocol',
         'gravatar_enabled', 'help_page_hide_commercial_content',
         'help_page_support_url', 'home_page_url',
         'housekeeping_bitmaps_enabled', 'housekeeping_enabled',
         'housekeeping_full_repack_period', 'housekeeping_gc_period',
         'housekeeping_incremental_repack_period', 'html_emails_enabled',
         'import_sources', 'koding_enabled', 'koding_url',
         'max_artifacts_size', 'max_attachment_size', 'max_pages_size',
         'metrics_enabled', 'metrics_host', 'metrics_method_call_threshold',
         'metrics_packet_size', 'metrics_pool_size', 'metrics_port',
         'metrics_sample_interval', 'metrics_timeout',
         'password_authentication_enabled_for_web',
         'password_authentication_enabled_for_git',
         'performance_bar_allowed_group_id', 'performance_bar_enabled',
         'plantuml_enabled', 'plantuml_url', 'polling_interval_multiplier',
         'project_export_enabled', 'prometheus_metrics_enabled',
         'recaptcha_enabled', 'recaptcha_private_key', 'recaptcha_site_key',
         'repository_checks_enabled', 'repository_storages',
         'require_two_factor_authentication', 'restricted_visibility_levels',
         'rsa_key_restriction', 'send_user_confirmation_email', 'sentry_dsn',
         'sentry_enabled', 'session_expire_delay', 'shared_runners_enabled',
         'shared_runners_text', 'sidekiq_throttling_enabled',
         'sidekiq_throttling_factor', 'sidekiq_throttling_queues',
         'sign_in_text', 'signup_enabled', 'terminal_max_session_time',
         'two_factor_grace_period', 'unique_ips_limit_enabled',
         'unique_ips_limit_per_user', 'unique_ips_limit_time_window',
         'usage_ping_enabled', 'user_default_external',
         'user_oauth_applications', 'version_check_enabled', 'enforce_terms',
         'terms')
    )

    @exc.on_http_error(exc.GitlabUpdateError)
    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 options to send to the server (e.g. sudo)

        Returns:
            dict: The new object data (*not* a RESTObject)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabUpdateError: If the server cannot perform the request
        """

        data = new_data.copy()
        if 'domain_whitelist' in data and data['domain_whitelist'] is None:
            data.pop('domain_whitelist')
        super(ApplicationSettingsManager, self).update(id, data, **kwargs)


class BroadcastMessage(SaveMixin, ObjectDeleteMixin, RESTObject):
    pass


class BroadcastMessageManager(CRUDMixin, RESTManager):
    _path = '/broadcast_messages'
    _obj_cls = BroadcastMessage

    _create_attrs = (('message', ), ('starts_at', 'ends_at', 'color', 'font'))
    _update_attrs = (tuple(), ('message', 'starts_at', 'ends_at', 'color',
                               'font'))


class DeployKey(RESTObject):
    pass


class DeployKeyManager(ListMixin, RESTManager):
    _path = '/deploy_keys'
    _obj_cls = DeployKey


class NotificationSettings(SaveMixin, RESTObject):
    _id_attr = None


class NotificationSettingsManager(GetWithoutIdMixin, UpdateMixin, RESTManager):
    _path = '/notification_settings'
    _obj_cls = NotificationSettings

    _update_attrs = (
        tuple(),
        ('level', 'notification_email', 'new_note', 'new_issue',
         'reopen_issue', 'close_issue', 'reassign_issue', 'new_merge_request',
         'reopen_merge_request', 'close_merge_request',
         'reassign_merge_request', 'merge_merge_request')
    )


class Dockerfile(RESTObject):
    _id_attr = 'name'


class DockerfileManager(RetrieveMixin, RESTManager):
    _path = '/templates/dockerfiles'
    _obj_cls = Dockerfile


class Feature(ObjectDeleteMixin, RESTObject):
    _id_attr = 'name'


class FeatureManager(ListMixin, DeleteMixin, RESTManager):
    _path = '/features/'
    _obj_cls = Feature

    @exc.on_http_error(exc.GitlabSetError)
    def set(self, name, value, feature_group=None, user=None, **kwargs):
        """Create or update the object.

        Args:
            name (str): The value to set for the object
            value (bool/int): The value to set for the object
            feature_group (str): A feature group name
            user (str): A GitLab username
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabSetError: If an error occured

        Returns:
            obj: The created/updated attribute
        """
        path = '%s/%s' % (self.path, name.replace('/', '%2F'))
        data = {'value': value, 'feature_group': feature_group, 'user': user}
        server_data = self.gitlab.http_post(path, post_data=data, **kwargs)
        return self._obj_cls(self, server_data)


class Gitignore(RESTObject):
    _id_attr = 'name'


class GitignoreManager(RetrieveMixin, RESTManager):
    _path = '/templates/gitignores'
    _obj_cls = Gitignore


class Gitlabciyml(RESTObject):
    _id_attr = 'name'


class GitlabciymlManager(RetrieveMixin, RESTManager):
    _path = '/templates/gitlab_ci_ymls'
    _obj_cls = Gitlabciyml


class GroupAccessRequest(AccessRequestMixin, ObjectDeleteMixin, RESTObject):
    pass


class GroupAccessRequestManager(ListMixin, CreateMixin, DeleteMixin,
                                RESTManager):
    _path = '/groups/%(group_id)s/access_requests'
    _obj_cls = GroupAccessRequest
    _from_parent_attrs = {'group_id': 'id'}


class GroupBadge(SaveMixin, ObjectDeleteMixin, RESTObject):
    pass


class GroupBadgeManager(BadgeRenderMixin, CRUDMixin, RESTManager):
    _path = '/groups/%(group_id)s/badges'
    _obj_cls = GroupBadge
    _from_parent_attrs = {'group_id': 'id'}
    _create_attrs = (('link_url', 'image_url'), tuple())
    _update_attrs = (tuple(), ('link_url', 'image_url'))


class GroupBoardList(SaveMixin, ObjectDeleteMixin, RESTObject):
    pass


class GroupBoardListManager(CRUDMixin, RESTManager):
    _path = '/groups/%(group_id)s/boards/%(board_id)s/lists'
    _obj_cls = GroupBoardList
    _from_parent_attrs = {'group_id': 'group_id',
                          'board_id': 'id'}
    _create_attrs = (('label_id', ), tuple())
    _update_attrs = (('position', ), tuple())


class GroupBoard(ObjectDeleteMixin, RESTObject):
    _managers = (('lists', 'GroupBoardListManager'), )


class GroupBoardManager(NoUpdateMixin, RESTManager):
    _path = '/groups/%(group_id)s/boards'
    _obj_cls = GroupBoard
    _from_parent_attrs = {'group_id': 'id'}
    _create_attrs = (('name', ), tuple())


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 GroupEpicIssue(ObjectDeleteMixin, SaveMixin, RESTObject):
    _id_attr = 'epic_issue_id'

    def save(self, **kwargs):
        """Save the changes made to the object to the server.

        The object is updated to match what the server returns.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raise:
            GitlabAuthenticationError: If authentication is not correct
            GitlabUpdateError: If the server cannot perform the request
        """
        updated_data = self._get_updated_data()
        # Nothing to update. Server fails if sent an empty dict.
        if not updated_data:
            return

        # call the manager
        obj_id = self.get_id()
        self.manager.update(obj_id, updated_data, **kwargs)


class GroupEpicIssueManager(ListMixin, CreateMixin, UpdateMixin, DeleteMixin,
                            RESTManager):
    _path = '/groups/%(group_id)s/epics/%(epic_iid)s/issues'
    _obj_cls = GroupEpicIssue
    _from_parent_attrs = {'group_id': 'group_id', 'epic_iid': 'iid'}
    _create_attrs = (('issue_id',), tuple())
    _update_attrs = (tuple(), ('move_before_id', 'move_after_id'))

    @exc.on_http_error(exc.GitlabCreateError)
    def create(self, data, **kwargs):
        """Create a new object.

        Args:
            data (dict): Parameters to send to the server to create the
                         resource
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the server cannot perform the request

        Returns:
            RESTObject: A new instance of the manage object class build with
                        the data sent by the server
        """
        CreateMixin._check_missing_create_attrs(self, data)
        path = '%s/%s' % (self.path, data.pop('issue_id'))
        server_data = self.gitlab.http_post(path, **kwargs)
        # The epic_issue_id attribute doesn't exist when creating the resource,
        # but is used everywhere elese. Let's create it to be consistent client
        # side
        server_data['epic_issue_id'] = server_data['id']
        return self._obj_cls(self, server_data)


class GroupEpic(ObjectDeleteMixin, SaveMixin, RESTObject):
    _id_attr = 'iid'
    _managers = (('issues', 'GroupEpicIssueManager'),)


class GroupEpicManager(CRUDMixin, RESTManager):
    _path = '/groups/%(group_id)s/epics'
    _obj_cls = GroupEpic
    _from_parent_attrs = {'group_id': 'id'}
    _list_filters = ('author_id', 'labels', 'order_by', 'sort', 'search')
    _create_attrs = (('title',),
                     ('labels', 'description', 'start_date', 'end_date'))
    _update_attrs = (tuple(), ('title', 'labels', 'description', 'start_date',
                               'end_date'))
    _types = {'labels': types.ListAttribute}


class GroupIssue(RESTObject):
    pass


class GroupIssueManager(ListMixin, RESTManager):
    _path = '/groups/%(group_id)s/issues'
    _obj_cls = GroupIssue
    _from_parent_attrs = {'group_id': 'id'}
    _list_filters = ('state', 'labels', 'milestone', 'order_by', 'sort',
                     'iids', 'author_id', 'assignee_id', 'my_reaction_emoji',
                     'search', 'created_after', 'created_before',
                     'updated_after', 'updated_before')
    _types = {'labels': types.ListAttribute}


class GroupMember(SaveMixin, ObjectDeleteMixin, RESTObject):
    _short_print_attr = 'username'


class GroupMemberManager(CRUDMixin, RESTManager):
    _path = '/groups/%(group_id)s/members'
    _obj_cls = GroupMember
    _from_parent_attrs = {'group_id': 'id'}
    _create_attrs = (('access_level', 'user_id'), ('expires_at', ))
    _update_attrs = (('access_level', ), ('expires_at', ))


class GroupMergeRequest(RESTObject):
    pass


class GroupMergeRequestManager(ListMixin, RESTManager):
    _path = '/groups/%(group_id)s/merge_requests'
    _obj_cls = GroupMergeRequest
    _from_parent_attrs = {'group_id': 'id'}
    _list_filters = ('state', 'order_by', 'sort', 'milestone', 'view',
                     'labels', 'created_after', 'created_before',
                     'updated_after', 'updated_before', 'scope', 'author_id',
                     'assignee_id', 'my_reaction_emoji', 'source_branch',
                     'target_branch', 'search')
    _types = {'labels': types.ListAttribute}


class GroupMilestone(SaveMixin, ObjectDeleteMixin, RESTObject):
    _short_print_attr = 'title'

    @cli.register_custom_action('GroupMilestone')
    @exc.on_http_error(exc.GitlabListError)
    def issues(self, **kwargs):
        """List issues related to this milestone.

        Args:
            all (bool): If True, return all the items, without pagination
            per_page (int): Number of items to retrieve per request
            page (int): ID of the page to return (starts with page 1)
            as_list (bool): If set to False and no pagination option is
                defined, return a generator instead of a list
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabListError: If the list could not be retrieved

        Returns:
            RESTObjectList: The list of issues
        """

        path = '%s/%s/issues' % (self.manager.path, self.get_id())
        data_list = self.manager.gitlab.http_list(path, as_list=False,
                                                  **kwargs)
        manager = GroupIssueManager(self.manager.gitlab,
                                    parent=self.manager._parent)
        # FIXME(gpocentek): the computed manager path is not correct
        return RESTObjectList(manager, GroupIssue, data_list)

    @cli.register_custom_action('GroupMilestone')
    @exc.on_http_error(exc.GitlabListError)
    def merge_requests(self, **kwargs):
        """List the merge requests related to this milestone.

        Args:
            all (bool): If True, return all the items, without pagination
            per_page (int): Number of items to retrieve per request
            page (int): ID of the page to return (starts with page 1)
            as_list (bool): If set to False and no pagination option is
                defined, return a generator instead of a list
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabListError: If the list could not be retrieved

        Returns:
            RESTObjectList: The list of merge requests
        """
        path = '%s/%s/merge_requests' % (self.manager.path, self.get_id())
        data_list = self.manager.gitlab.http_list(path, as_list=False,
                                                  **kwargs)
        manager = GroupIssueManager(self.manager.gitlab,
                                    parent=self.manager._parent)
        # FIXME(gpocentek): the computed manager path is not correct
        return RESTObjectList(manager, GroupMergeRequest, data_list)


class GroupMilestoneManager(CRUDMixin, RESTManager):
    _path = '/groups/%(group_id)s/milestones'
    _obj_cls = GroupMilestone
    _from_parent_attrs = {'group_id': 'id'}
    _create_attrs = (('title', ), ('description', 'due_date', 'start_date'))
    _update_attrs = (tuple(), ('title', 'description', 'due_date',
                               'start_date', 'state_event'))
    _list_filters = ('iids', 'state', 'search')


class GroupNotificationSettings(NotificationSettings):
    pass


class GroupNotificationSettingsManager(NotificationSettingsManager):
    _path = '/groups/%(group_id)s/notification_settings'
    _obj_cls = GroupNotificationSettings
    _from_parent_attrs = {'group_id': 'id'}


class GroupProject(RESTObject):
    pass


class GroupProjectManager(ListMixin, RESTManager):
    _path = '/groups/%(group_id)s/projects'
    _obj_cls = GroupProject
    _from_parent_attrs = {'group_id': 'id'}
    _list_filters = ('archived', 'visibility', 'order_by', 'sort', 'search',
                     'ci_enabled_first', 'simple', 'owned', 'starred',
                     'with_custom_attributes')


class GroupSubgroup(RESTObject):
    pass


class GroupSubgroupManager(ListMixin, RESTManager):
    _path = '/groups/%(group_id)s/subgroups'
    _obj_cls = GroupSubgroup
    _from_parent_attrs = {'group_id': 'id'}
    _list_filters = ('skip_groups', 'all_available', 'search', 'order_by',
                     'sort', 'statistics', 'owned', 'with_custom_attributes')


class GroupVariable(SaveMixin, ObjectDeleteMixin, RESTObject):
    _id_attr = 'key'


class GroupVariableManager(CRUDMixin, RESTManager):
    _path = '/groups/%(group_id)s/variables'
    _obj_cls = GroupVariable
    _from_parent_attrs = {'group_id': 'id'}
    _create_attrs = (('key', 'value'), ('protected',))
    _update_attrs = (('key', 'value'), ('protected',))


class Group(SaveMixin, ObjectDeleteMixin, RESTObject):
    _short_print_attr = 'name'
    _managers = (
        ('accessrequests', 'GroupAccessRequestManager'),
        ('badges', 'GroupBadgeManager'),
        ('boards', 'GroupBoardManager'),
        ('customattributes', 'GroupCustomAttributeManager'),
        ('epics', 'GroupEpicManager'),
        ('issues', 'GroupIssueManager'),
        ('members', 'GroupMemberManager'),
        ('mergerequests', 'GroupMergeRequestManager'),
        ('milestones', 'GroupMilestoneManager'),
        ('notificationsettings', 'GroupNotificationSettingsManager'),
        ('projects', 'GroupProjectManager'),
        ('subgroups', 'GroupSubgroupManager'),
        ('variables', 'GroupVariableManager'),
    )

    @cli.register_custom_action('Group', ('to_project_id', ))
    @exc.on_http_error(exc.GitlabTransferProjectError)
    def transfer_project(self, to_project_id, **kwargs):
        """Transfer a project to this group.

        Args:
            to_project_id (int): ID of the project to transfer
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabTransferProjectError: If the project could not be transfered
        """
        path = '/groups/%d/projects/%d' % (self.id, to_project_id)
        self.manager.gitlab.http_post(path, **kwargs)

    @cli.register_custom_action('Group', ('scope', 'search'))
    @exc.on_http_error(exc.GitlabSearchError)
    def search(self, scope, search, **kwargs):
        """Search the group resources matching the provided string.'

        Args:
            scope (str): Scope of the search
            search (str): Search string
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabSearchError: If the server failed to perform the request

        Returns:
            GitlabList: A list of dicts describing the resources found.
        """
        data = {'scope': scope, 'search': search}
        path = '/groups/%d/search' % self.get_id()
        return self.manager.gitlab.http_list(path, query_data=data, **kwargs)

    @cli.register_custom_action('Group', ('cn', 'group_access', 'provider'))
    @exc.on_http_error(exc.GitlabCreateError)
    def add_ldap_group_link(self, cn, group_access, provider, **kwargs):
        """Add an LDAP group link.

        Args:
            cn (str): CN of the LDAP group
            group_access (int): Minimum access level for members of the LDAP
                group
            provider (str): LDAP provider for the LDAP group
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the server cannot perform the request
        """
        path = '/groups/%d/ldap_group_links' % self.get_id()
        data = {'cn': cn, 'group_access': group_access, 'provider': provider}
        self.manager.gitlab.http_post(path, post_data=data, **kwargs)

    @cli.register_custom_action('Group', ('cn',), ('provider',))
    @exc.on_http_error(exc.GitlabDeleteError)
    def delete_ldap_group_link(self, cn, provider=None, **kwargs):
        """Delete an LDAP group link.

        Args:
            cn (str): CN of the LDAP group
            provider (str): LDAP provider for the LDAP group
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabDeleteError: If the server cannot perform the request
        """
        path = '/groups/%d/ldap_group_links' % self.get_id()
        if provider is not None:
            path += '/%s' % provider
        path += '/%s' % cn
        self.manager.gitlab.http_delete(path)

    @cli.register_custom_action('Group')
    @exc.on_http_error(exc.GitlabCreateError)
    def ldap_sync(self, **kwargs):
        """Sync LDAP groups.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the server cannot perform the request
        """
        path = '/groups/%d/ldap_sync' % self.get_id()
        self.manager.gitlab.http_post(path, **kwargs)


class GroupManager(CRUDMixin, RESTManager):
    _path = '/groups'
    _obj_cls = Group
    _list_filters = ('skip_groups', 'all_available', 'search', 'order_by',
                     'sort', 'statistics', 'owned', 'with_custom_attributes')
    _create_attrs = (
        ('name', 'path'),
        ('description', 'visibility', 'parent_id', 'lfs_enabled',
         'request_access_enabled')
    )
    _update_attrs = (
        tuple(),
        ('name', 'path', 'description', 'visibility', 'lfs_enabled',
         'request_access_enabled')
    )


class Hook(ObjectDeleteMixin, RESTObject):
    _url = '/hooks'
    _short_print_attr = 'url'


class HookManager(NoUpdateMixin, RESTManager):
    _path = '/hooks'
    _obj_cls = Hook
    _create_attrs = (('url', ), tuple())


class Issue(RESTObject):
    _url = '/issues'
    _short_print_attr = 'title'


class IssueManager(ListMixin, RESTManager):
    _path = '/issues'
    _obj_cls = Issue
    _list_filters = ('state', 'labels', 'milestone', 'scope', 'author_id',
                     'assignee_id', 'my_reaction_emoji', 'iids', 'order_by',
                     'sort', 'search', 'created_after', 'created_before',
                     'updated_after', 'updated_before')
    _types = {'labels': types.ListAttribute}


class LDAPGroup(RESTObject):
    _id_attr = None


class LDAPGroupManager(RESTManager):
    _path = '/ldap/groups'
    _obj_cls = LDAPGroup
    _list_filters = ('search', 'provider')

    @exc.on_http_error(exc.GitlabListError)
    def list(self, **kwargs):
        """Retrieve a list of objects.

        Args:
            all (bool): If True, return all the items, without pagination
            per_page (int): Number of items to retrieve per request
            page (int): ID of the page to return (starts with page 1)
            as_list (bool): If set to False and no pagination option is
                defined, return a generator instead of a list
            **kwargs: Extra options to send to the server (e.g. sudo)

        Returns:
            list: The list of objects, or a generator if `as_list` is False

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabListError: If the server cannot perform the request
        """
        data = kwargs.copy()
        if self.gitlab.per_page:
            data.setdefault('per_page', self.gitlab.per_page)

        if 'provider' in data:
            path = '/ldap/%s/groups' % data['provider']
        else:
            path = self._path

        obj = self.gitlab.http_list(path, **data)
        if isinstance(obj, list):
            return [self._obj_cls(self, item) for item in obj]
        else:
            return base.RESTObjectList(self, self._obj_cls, obj)


class License(RESTObject):
    _id_attr = 'key'


class LicenseManager(RetrieveMixin, RESTManager):
    _path = '/templates/licenses'
    _obj_cls = License
    _list_filters = ('popular', )
    _optional_get_attrs = ('project', 'fullname')


class MergeRequest(RESTObject):
    pass


class MergeRequestManager(ListMixin, RESTManager):
    _path = '/merge_requests'
    _obj_cls = MergeRequest
    _from_parent_attrs = {'group_id': 'id'}
    _list_filters = ('state', 'order_by', 'sort', 'milestone', 'view',
                     'labels', 'created_after', 'created_before',
                     'updated_after', 'updated_before', 'scope', 'author_id',
                     'assignee_id', 'my_reaction_emoji', 'source_branch',
                     'target_branch', 'search')
    _types = {'labels': types.ListAttribute}


class Snippet(UserAgentDetailMixin, SaveMixin, ObjectDeleteMixin, RESTObject):
    _short_print_attr = 'title'

    @cli.register_custom_action('Snippet')
    @exc.on_http_error(exc.GitlabGetError)
    def content(self, streamed=False, action=None, chunk_size=1024, **kwargs):
        """Return the content of a snippet.

        Args:
            streamed (bool): If True the data will be processed by chunks of
                `chunk_size` and each chunk is passed to `action` for
                treatment.
            action (callable): Callable responsible of dealing with chunk of
                data
            chunk_size (int): Size of each chunk
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the content could not be retrieved

        Returns:
            str: The snippet content
        """
        path = '/snippets/%s/raw' % self.get_id()
        result = self.manager.gitlab.http_get(path, streamed=streamed,
                                              **kwargs)
        return utils.response_content(result, streamed, action, chunk_size)


class SnippetManager(CRUDMixin, RESTManager):
    _path = '/snippets'
    _obj_cls = Snippet
    _create_attrs = (('title', 'file_name', 'content'),
                     ('lifetime', 'visibility'))
    _update_attrs = (tuple(),
                     ('title', 'file_name', 'content', 'visibility'))

    @cli.register_custom_action('SnippetManager')
    def public(self, **kwargs):
        """List all the public snippets.

        Args:
            all (bool): If True the returned object will be a list
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabListError: If the list could not be retrieved

        Returns:
            RESTObjectList: A generator for the snippets list
        """
        return self.list(path='/snippets/public', **kwargs)


class Namespace(RESTObject):
    pass


class NamespaceManager(RetrieveMixin, RESTManager):
    _path = '/namespaces'
    _obj_cls = Namespace
    _list_filters = ('search', )


class PagesDomain(RESTObject):
    _id_attr = 'domain'


class PagesDomainManager(ListMixin, RESTManager):
    _path = '/pages/domains'
    _obj_cls = PagesDomain


class ProjectBoardList(SaveMixin, ObjectDeleteMixin, RESTObject):
    pass


class ProjectBoardListManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/boards/%(board_id)s/lists'
    _obj_cls = ProjectBoardList
    _from_parent_attrs = {'project_id': 'project_id',
                          'board_id': 'id'}
    _create_attrs = (('label_id', ), tuple())
    _update_attrs = (('position', ), tuple())


class ProjectBoard(ObjectDeleteMixin, RESTObject):
    _managers = (('lists', 'ProjectBoardListManager'), )


class ProjectBoardManager(NoUpdateMixin, RESTManager):
    _path = '/projects/%(project_id)s/boards'
    _obj_cls = ProjectBoard
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('name', ), tuple())


class ProjectBranch(ObjectDeleteMixin, RESTObject):
    _id_attr = 'name'

    @cli.register_custom_action('ProjectBranch', tuple(),
                                ('developers_can_push',
                                 'developers_can_merge'))
    @exc.on_http_error(exc.GitlabProtectError)
    def protect(self, developers_can_push=False, developers_can_merge=False,
                **kwargs):
        """Protect the branch.

        Args:
            developers_can_push (bool): Set to True if developers are allowed
                                        to push to the branch
            developers_can_merge (bool): Set to True if developers are allowed
                                         to merge to the branch
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabProtectError: If the branch could not be protected
        """
        id = self.get_id().replace('/', '%2F')
        path = '%s/%s/protect' % (self.manager.path, id)
        post_data = {'developers_can_push': developers_can_push,
                     'developers_can_merge': developers_can_merge}
        self.manager.gitlab.http_put(path, post_data=post_data, **kwargs)
        self._attrs['protected'] = True

    @cli.register_custom_action('ProjectBranch')
    @exc.on_http_error(exc.GitlabProtectError)
    def unprotect(self, **kwargs):
        """Unprotect the branch.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabProtectError: If the branch could not be unprotected
        """
        id = self.get_id().replace('/', '%2F')
        path = '%s/%s/unprotect' % (self.manager.path, id)
        self.manager.gitlab.http_put(path, **kwargs)
        self._attrs['protected'] = False


class ProjectBranchManager(NoUpdateMixin, RESTManager):
    _path = '/projects/%(project_id)s/repository/branches'
    _obj_cls = ProjectBranch
    _from_parent_attrs = {'project_id': 'id'}
    _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, RefreshMixin):
    @cli.register_custom_action('ProjectJob')
    @exc.on_http_error(exc.GitlabJobCancelError)
    def cancel(self, **kwargs):
        """Cancel the job.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabJobCancelError: If the job could not be canceled
        """
        path = '%s/%s/cancel' % (self.manager.path, self.get_id())
        self.manager.gitlab.http_post(path)

    @cli.register_custom_action('ProjectJob')
    @exc.on_http_error(exc.GitlabJobRetryError)
    def retry(self, **kwargs):
        """Retry the job.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabJobRetryError: If the job could not be retried
        """
        path = '%s/%s/retry' % (self.manager.path, self.get_id())
        self.manager.gitlab.http_post(path)

    @cli.register_custom_action('ProjectJob')
    @exc.on_http_error(exc.GitlabJobPlayError)
    def play(self, **kwargs):
        """Trigger a job explicitly.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabJobPlayError: If the job could not be triggered
        """
        path = '%s/%s/play' % (self.manager.path, self.get_id())
        self.manager.gitlab.http_post(path)

    @cli.register_custom_action('ProjectJob')
    @exc.on_http_error(exc.GitlabJobEraseError)
    def erase(self, **kwargs):
        """Erase the job (remove job artifacts and trace).

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabJobEraseError: If the job could not be erased
        """
        path = '%s/%s/erase' % (self.manager.path, self.get_id())
        self.manager.gitlab.http_post(path)

    @cli.register_custom_action('ProjectJob')
    @exc.on_http_error(exc.GitlabCreateError)
    def keep_artifacts(self, **kwargs):
        """Prevent artifacts from being deleted when expiration is set.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the request could not be performed
        """
        path = '%s/%s/artifacts/keep' % (self.manager.path, self.get_id())
        self.manager.gitlab.http_post(path)

    @cli.register_custom_action('ProjectJob')
    @exc.on_http_error(exc.GitlabGetError)
    def artifacts(self, streamed=False, action=None, chunk_size=1024,
                  **kwargs):
        """Get the job artifacts.

        Args:
            streamed (bool): If True the data will be processed by chunks of
                `chunk_size` and each chunk is passed to `action` for
                treatment
            action (callable): Callable responsible of dealing with chunk of
                data
            chunk_size (int): Size of each chunk
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the artifacts could not be retrieved

        Returns:
            str: The artifacts if `streamed` is False, None otherwise.
        """
        path = '%s/%s/artifacts' % (self.manager.path, self.get_id())
        result = self.manager.gitlab.http_get(path, streamed=streamed,
                                              **kwargs)
        return utils.response_content(result, streamed, action, chunk_size)

    @cli.register_custom_action('ProjectJob')
    @exc.on_http_error(exc.GitlabGetError)
    def artifact(self, path, streamed=False, action=None, chunk_size=1024,
                 **kwargs):
        """Get a single artifact file from within the job's artifacts archive.

        Args:
            path (str): Path of the artifact
            streamed (bool): If True the data will be processed by chunks of
                `chunk_size` and each chunk is passed to `action` for
                treatment
            action (callable): Callable responsible of dealing with chunk of
                data
            chunk_size (int): Size of each chunk
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the artifacts could not be retrieved

        Returns:
            str: The artifacts if `streamed` is False, None otherwise.
        """
        path = '%s/%s/artifacts/%s' % (self.manager.path, self.get_id(), path)
        result = self.manager.gitlab.http_get(path, streamed=streamed,
                                              **kwargs)
        return utils.response_content(result, streamed, action, chunk_size)

    @cli.register_custom_action('ProjectJob')
    @exc.on_http_error(exc.GitlabGetError)
    def trace(self, streamed=False, action=None, chunk_size=1024, **kwargs):
        """Get the job trace.

        Args:
            streamed (bool): If True the data will be processed by chunks of
                `chunk_size` and each chunk is passed to `action` for
                treatment
            action (callable): Callable responsible of dealing with chunk of
                data
            chunk_size (int): Size of each chunk
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the artifacts could not be retrieved

        Returns:
            str: The trace
        """
        path = '%s/%s/trace' % (self.manager.path, self.get_id())
        result = self.manager.gitlab.http_get(path, streamed=streamed,
                                              **kwargs)
        return utils.response_content(result, streamed, action, chunk_size)


class ProjectJobManager(RetrieveMixin, RESTManager):
    _path = '/projects/%(project_id)s/jobs'
    _obj_cls = ProjectJob
    _from_parent_attrs = {'project_id': 'id'}


class ProjectCommitStatus(RESTObject, RefreshMixin):
    pass


class ProjectCommitStatusManager(ListMixin, CreateMixin, RESTManager):
    _path = ('/projects/%(project_id)s/repository/commits/%(commit_id)s'
             '/statuses')
    _obj_cls = ProjectCommitStatus
    _from_parent_attrs = {'project_id': 'project_id', 'commit_id': 'id'}
    _create_attrs = (('state', ),
                     ('description', 'name', 'context', 'ref', 'target_url',
                      'coverage'))

    @exc.on_http_error(exc.GitlabCreateError)
    def create(self, data, **kwargs):
        """Create a new object.

        Args:
            data (dict): Parameters to send to the server to create the
                         resource
            **kwargs: Extra options to send to the server (e.g. sudo or
                      'ref_name', 'stage', 'name', 'all')

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the server cannot perform the request

        Returns:
            RESTObject: A new instance of the manage object class build with
                        the data sent by the server
        """
        # project_id and commit_id are in the data dict when using the CLI, but
        # they are missing when using only the API
        # See #511
        base_path = '/projects/%(project_id)s/statuses/%(commit_id)s'
        if 'project_id' in data and 'commit_id' in data:
            path = base_path % data
        else:
            path = self._compute_path(base_path)
        return CreateMixin.create(self, data, path=path, **kwargs)


class ProjectCommitComment(RESTObject):
    _id_attr = None
    _short_print_attr = 'note'


class ProjectCommitCommentManager(ListMixin, CreateMixin, RESTManager):
    _path = ('/projects/%(project_id)s/repository/commits/%(commit_id)s'
             '/comments')
    _obj_cls = ProjectCommitComment
    _from_parent_attrs = {'project_id': 'project_id', 'commit_id': 'id'}
    _create_attrs = (('note', ), ('path', 'line', 'line_type'))


class ProjectCommitDiscussionNote(SaveMixin, ObjectDeleteMixin, RESTObject):
    pass


class ProjectCommitDiscussionNoteManager(GetMixin, CreateMixin, UpdateMixin,
                                         DeleteMixin, RESTManager):
    _path = ('/projects/%(project_id)s/repository/commits/%(commit_id)s/'
             'discussions/%(discussion_id)s/notes')
    _obj_cls = ProjectCommitDiscussionNote
    _from_parent_attrs = {'project_id': 'project_id',
                          'commit_id': 'commit_id',
                          'discussion_id': 'id'}
    _create_attrs = (('body',), ('created_at', 'position'))
    _update_attrs = (('body',), tuple())


class ProjectCommitDiscussion(RESTObject):
    _managers = (('notes', 'ProjectCommitDiscussionNoteManager'),)


class ProjectCommitDiscussionManager(RetrieveMixin, CreateMixin, RESTManager):
    _path = ('/projects/%(project_id)s/repository/commits/%(commit_id)s/'
             'discussions')
    _obj_cls = ProjectCommitDiscussion
    _from_parent_attrs = {'project_id': 'project_id', 'commit_id': 'id'}
    _create_attrs = (('body',), ('created_at',))


class ProjectCommit(RESTObject):
    _short_print_attr = 'title'
    _managers = (
        ('comments', 'ProjectCommitCommentManager'),
        ('discussions', 'ProjectCommitDiscussionManager'),
        ('statuses', 'ProjectCommitStatusManager'),
    )

    @cli.register_custom_action('ProjectCommit')
    @exc.on_http_error(exc.GitlabGetError)
    def diff(self, **kwargs):
        """Generate the commit diff.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the diff could not be retrieved

        Returns:
            list: The changes done in this commit
        """
        path = '%s/%s/diff' % (self.manager.path, self.get_id())
        return self.manager.gitlab.http_get(path, **kwargs)

    @cli.register_custom_action('ProjectCommit', ('branch',))
    @exc.on_http_error(exc.GitlabCherryPickError)
    def cherry_pick(self, branch, **kwargs):
        """Cherry-pick a commit into a branch.

        Args:
            branch (str): Name of target branch
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCherryPickError: If the cherry-pick could not be performed
        """
        path = '%s/%s/cherry_pick' % (self.manager.path, self.get_id())
        post_data = {'branch': branch}
        self.manager.gitlab.http_post(path, post_data=post_data, **kwargs)

    @cli.register_custom_action('ProjectCommit', optional=('type',))
    @exc.on_http_error(exc.GitlabGetError)
    def refs(self, type='all', **kwargs):
        """List the references the commit is pushed to.

        Args:
            type (str): The scope of references ('branch', 'tag' or 'all')
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the references could not be retrieved

        Returns:
            list: The references the commit is pushed to.
        """
        path = '%s/%s/refs' % (self.manager.path, self.get_id())
        data = {'type': type}
        return self.manager.gitlab.http_get(path, query_data=data, **kwargs)

    @cli.register_custom_action('ProjectCommit')
    @exc.on_http_error(exc.GitlabGetError)
    def merge_requests(self, **kwargs):
        """List the merge requests related to the commit.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the references could not be retrieved

        Returns:
            list: The merge requests related to the commit.
        """
        path = '%s/%s/merge_requests' % (self.manager.path, self.get_id())
        return self.manager.gitlab.http_get(path, **kwargs)


class ProjectCommitManager(RetrieveMixin, CreateMixin, RESTManager):
    _path = '/projects/%(project_id)s/repository/commits'
    _obj_cls = ProjectCommit
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('branch', 'commit_message', 'actions'),
                     ('author_email', 'author_name'))


class ProjectEnvironment(SaveMixin, ObjectDeleteMixin, RESTObject):
    @cli.register_custom_action('ProjectEnvironment')
    @exc.on_http_error(exc.GitlabStopError)
    def stop(self, **kwargs):
        """Stop the environment.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabStopError: If the operation failed
        """
        path = '%s/%s/stop' % (self.manager.path, self.get_id())
        self.manager.gitlab.http_post(path, **kwargs)


class ProjectEnvironmentManager(ListMixin, CreateMixin, UpdateMixin,
                                DeleteMixin, RESTManager):
    _path = '/projects/%(project_id)s/environments'
    _obj_cls = ProjectEnvironment
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('name', ), ('external_url', ))
    _update_attrs = (tuple(), ('name', 'external_url'))


class ProjectKey(SaveMixin, ObjectDeleteMixin, RESTObject):
    pass


class ProjectKeyManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/deploy_keys'
    _obj_cls = ProjectKey
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('title', 'key'), ('can_push',))
    _update_attrs = (tuple(), ('title', 'can_push'))

    @cli.register_custom_action('ProjectKeyManager', ('key_id',))
    @exc.on_http_error(exc.GitlabProjectDeployKeyError)
    def enable(self, key_id, **kwargs):
        """Enable a deploy key for a project.

        Args:
            key_id (int): The ID of the key to enable
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabProjectDeployKeyError: If the key could not be enabled
        """
        path = '%s/%s/enable' % (self.path, key_id)
        self.gitlab.http_post(path, **kwargs)


class ProjectBadge(SaveMixin, ObjectDeleteMixin, RESTObject):
    pass


class ProjectBadgeManager(BadgeRenderMixin, CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/badges'
    _obj_cls = ProjectBadge
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('link_url', 'image_url'), tuple())
    _update_attrs = (tuple(), ('link_url', 'image_url'))


class ProjectEvent(Event):
    pass


class ProjectEventManager(EventManager):
    _path = '/projects/%(project_id)s/events'
    _obj_cls = ProjectEvent
    _from_parent_attrs = {'project_id': 'id'}


class ProjectFork(RESTObject):
    pass


class ProjectForkManager(CreateMixin, ListMixin, RESTManager):
    _path = '/projects/%(project_id)s/fork'
    _obj_cls = ProjectFork
    _from_parent_attrs = {'project_id': 'id'}
    _list_filters = ('archived', 'visibility', 'order_by', 'sort', 'search',
                     'simple', 'owned', 'membership', 'starred', 'statistics',
                     'with_custom_attributes', 'with_issues_enabled',
                     'with_merge_requests_enabled')
    _create_attrs = (tuple(), ('namespace', ))

    def list(self, **kwargs):
        """Retrieve a list of objects.

        Args:
            all (bool): If True, return all the items, without pagination
            per_page (int): Number of items to retrieve per request
            page (int): ID of the page to return (starts with page 1)
            as_list (bool): If set to False and no pagination option is
                defined, return a generator instead of a list
            **kwargs: Extra options to send to the server (e.g. sudo)

        Returns:
            list: The list of objects, or a generator if `as_list` is False

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabListError: If the server cannot perform the request
        """

        path = self._compute_path('/projects/%(project_id)s/forks')
        return ListMixin.list(self, path=path, **kwargs)


class ProjectHook(SaveMixin, ObjectDeleteMixin, RESTObject):
    _short_print_attr = 'url'


class ProjectHookManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/hooks'
    _obj_cls = ProjectHook
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (
        ('url', ),
        ('push_events', 'issues_events', 'confidential_issues_events',
         'merge_requests_events', 'tag_push_events', 'note_events',
         'job_events', 'pipeline_events', 'wiki_page_events',
         'enable_ssl_verification', 'token')
    )
    _update_attrs = (
        ('url', ),
        ('push_events', 'issues_events', 'confidential_issues_events',
         'merge_requests_events', 'tag_push_events', 'note_events',
         'job_events', 'pipeline_events', 'wiki_events',
         'enable_ssl_verification', 'token')
    )


class ProjectIssueAwardEmoji(ObjectDeleteMixin, RESTObject):
    pass


class ProjectIssueAwardEmojiManager(NoUpdateMixin, RESTManager):
    _path = '/projects/%(project_id)s/issues/%(issue_iid)s/award_emoji'
    _obj_cls = ProjectIssueAwardEmoji
    _from_parent_attrs = {'project_id': 'project_id', 'issue_iid': 'iid'}
    _create_attrs = (('name', ), tuple())


class ProjectIssueNoteAwardEmoji(ObjectDeleteMixin, RESTObject):
    pass


class ProjectIssueNoteAwardEmojiManager(NoUpdateMixin, RESTManager):
    _path = ('/projects/%(project_id)s/issues/%(issue_iid)s'
             '/notes/%(note_id)s/award_emoji')
    _obj_cls = ProjectIssueNoteAwardEmoji
    _from_parent_attrs = {'project_id': 'project_id',
                          'issue_iid': 'issue_iid',
                          'note_id': 'id'}
    _create_attrs = (('name', ), tuple())


class ProjectIssueNote(SaveMixin, ObjectDeleteMixin, RESTObject):
    _managers = (('awardemojis', 'ProjectIssueNoteAwardEmojiManager'),)


class ProjectIssueNoteManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/issues/%(issue_iid)s/notes'
    _obj_cls = ProjectIssueNote
    _from_parent_attrs = {'project_id': 'project_id', 'issue_iid': 'iid'}
    _create_attrs = (('body', ), ('created_at', ))
    _update_attrs = (('body', ), tuple())


class ProjectIssueDiscussionNote(SaveMixin, ObjectDeleteMixin, RESTObject):
    pass


class ProjectIssueDiscussionNoteManager(GetMixin, CreateMixin, UpdateMixin,
                                        DeleteMixin, RESTManager):
    _path = ('/projects/%(project_id)s/issues/%(issue_iid)s/'
             'discussions/%(discussion_id)s/notes')
    _obj_cls = ProjectIssueDiscussionNote
    _from_parent_attrs = {'project_id': 'project_id',
                          'issue_iid': 'issue_iid',
                          'discussion_id': 'id'}
    _create_attrs = (('body',), ('created_at',))
    _update_attrs = (('body',), tuple())


class ProjectIssueDiscussion(RESTObject):
    _managers = (('notes', 'ProjectIssueDiscussionNoteManager'),)


class ProjectIssueDiscussionManager(RetrieveMixin, CreateMixin, RESTManager):
    _path = '/projects/%(project_id)s/issues/%(issue_iid)s/discussions'
    _obj_cls = ProjectIssueDiscussion
    _from_parent_attrs = {'project_id': 'project_id', 'issue_iid': 'iid'}
    _create_attrs = (('body',), ('created_at',))


class ProjectIssueLink(ObjectDeleteMixin, RESTObject):
    _id_attr = 'issue_link_id'


class ProjectIssueLinkManager(ListMixin, CreateMixin, DeleteMixin,
                              RESTManager):
    _path = '/projects/%(project_id)s/issues/%(issue_iid)s/links'
    _obj_cls = ProjectIssueLink
    _from_parent_attrs = {'project_id': 'project_id', 'issue_iid': 'iid'}
    _create_attrs = (('target_project_id', 'target_issue_iid'), tuple())

    @exc.on_http_error(exc.GitlabCreateError)
    def create(self, data, **kwargs):
        """Create a new object.

        Args:
            data (dict): parameters to send to the server to create the
                         resource
            **kwargs: Extra options to send to the server (e.g. sudo)

        Returns:
            RESTObject, RESTObject: The source and target issues

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the server cannot perform the request
        """
        self._check_missing_create_attrs(data)
        server_data = self.gitlab.http_post(self.path, post_data=data,
                                            **kwargs)
        source_issue = ProjectIssue(self._parent.manager,
                                    server_data['source_issue'])
        target_issue = ProjectIssue(self._parent.manager,
                                    server_data['target_issue'])
        return source_issue, target_issue


class ProjectIssue(UserAgentDetailMixin, SubscribableMixin, TodoMixin,
                   TimeTrackingMixin, ParticipantsMixin, SaveMixin,
                   ObjectDeleteMixin, RESTObject):
    _short_print_attr = 'title'
    _id_attr = 'iid'
    _managers = (
        ('awardemojis', 'ProjectIssueAwardEmojiManager'),
        ('discussions', 'ProjectIssueDiscussionManager'),
        ('links', 'ProjectIssueLinkManager'),
        ('notes', 'ProjectIssueNoteManager'),
    )

    @cli.register_custom_action('ProjectIssue', ('to_project_id',))
    @exc.on_http_error(exc.GitlabUpdateError)
    def move(self, to_project_id, **kwargs):
        """Move the issue to another project.

        Args:
            to_project_id(int): ID of the target project
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabUpdateError: If the issue could not be moved
        """
        path = '%s/%s/move' % (self.manager.path, self.get_id())
        data = {'to_project_id': to_project_id}
        server_data = self.manager.gitlab.http_post(path, post_data=data,
                                                    **kwargs)
        self._update_attrs(server_data)

    @cli.register_custom_action('ProjectIssue')
    @exc.on_http_error(exc.GitlabGetError)
    def closed_by(self, **kwargs):
        """List merge requests that will close the issue when merged.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetErrot: If the merge requests could not be retrieved

        Returns:
            list: The list of merge requests.
        """
        path = '%s/%s/closed_by' % (self.manager.path, self.get_id())
        return self.manager.gitlab.http_get(path, **kwargs)


class ProjectIssueManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/issues'
    _obj_cls = ProjectIssue
    _from_parent_attrs = {'project_id': 'id'}
    _list_filters = ('iids', 'state', 'labels', 'milestone', 'scope',
                     'author_id', 'assignee_id', 'my_reaction_emoji',
                     'order_by', 'sort', 'search', 'created_after',
                     'created_before', 'updated_after', 'updated_before')
    _create_attrs = (('title', ),
                     ('description', 'confidential', 'assignee_ids',
                      'assignee_id', 'milestone_id', 'labels', 'created_at',
                      'due_date', 'merge_request_to_resolve_discussions_of',
                      'discussion_to_resolve'))
    _update_attrs = (tuple(), ('title', 'description', 'confidential',
                               'assignee_ids', 'assignee_id', 'milestone_id',
                               'labels', 'state_event', 'updated_at',
                               'due_date', 'discussion_locked'))
    _types = {'labels': types.ListAttribute}


class ProjectMember(SaveMixin, ObjectDeleteMixin, RESTObject):
    _short_print_attr = 'username'


class ProjectMemberManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/members'
    _obj_cls = ProjectMember
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('access_level', 'user_id'), ('expires_at', ))
    _update_attrs = (('access_level', ), ('expires_at', ))


class ProjectNote(RESTObject):
    pass


class ProjectNoteManager(RetrieveMixin, RESTManager):
    _path = '/projects/%(project_id)s/notes'
    _obj_cls = ProjectNote
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('body', ), tuple())


class ProjectNotificationSettings(NotificationSettings):
    pass


class ProjectNotificationSettingsManager(NotificationSettingsManager):
    _path = '/projects/%(project_id)s/notification_settings'
    _obj_cls = ProjectNotificationSettings
    _from_parent_attrs = {'project_id': 'id'}


class ProjectPagesDomain(SaveMixin, ObjectDeleteMixin, RESTObject):
    _id_attr = 'domain'


class ProjectPagesDomainManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/pages/domains'
    _obj_cls = ProjectPagesDomain
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('domain', ), ('certificate', 'key'))
    _update_attrs = (tuple(), ('certificate', 'key'))


class ProjectTag(ObjectDeleteMixin, RESTObject):
    _id_attr = 'name'
    _short_print_attr = 'name'

    @cli.register_custom_action('ProjectTag', ('description', ))
    def set_release_description(self, description, **kwargs):
        """Set the release notes on the tag.

        If the release doesn't exist yet, it will be created. If it already
        exists, its description will be updated.

        Args:
            description (str): Description of the release.
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the server fails to create the release
            GitlabUpdateError: If the server fails to update the release
        """
        id = self.get_id().replace('/', '%2F')
        path = '%s/%s/release' % (self.manager.path, id)
        data = {'description': description}
        if self.release is None:
            try:
                server_data = self.manager.gitlab.http_post(path,
                                                            post_data=data,
                                                            **kwargs)
            except exc.GitlabHttpError as e:
                raise exc.GitlabCreateError(e.response_code, e.error_message)
        else:
            try:
                server_data = self.manager.gitlab.http_put(path,
                                                           post_data=data,
                                                           **kwargs)
            except exc.GitlabHttpError as e:
                raise exc.GitlabUpdateError(e.response_code, e.error_message)
        self.release = server_data


class ProjectTagManager(NoUpdateMixin, RESTManager):
    _path = '/projects/%(project_id)s/repository/tags'
    _obj_cls = ProjectTag
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('tag_name', 'ref'), ('message',))


class ProjectProtectedTag(ObjectDeleteMixin, RESTObject):
    _id_attr = 'name'
    _short_print_attr = 'name'


class ProjectProtectedTagManager(NoUpdateMixin, RESTManager):
    _path = '/projects/%(project_id)s/protected_tags'
    _obj_cls = ProjectProtectedTag
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('name',), ('create_access_level',))


class ProjectMergeRequestApproval(SaveMixin, RESTObject):
    _id_attr = None


class ProjectMergeRequestApprovalManager(GetWithoutIdMixin, UpdateMixin,
                                         RESTManager):
    _path = '/projects/%(project_id)s/merge_requests/%(mr_iid)s/approvals'
    _obj_cls = ProjectMergeRequestApproval
    _from_parent_attrs = {'project_id': 'project_id', 'mr_iid': 'iid'}
    _update_attrs = (('approvals_required',), tuple())
    _update_uses_post = True

    @exc.on_http_error(exc.GitlabUpdateError)
    def set_approvers(self, approver_ids=[], approver_group_ids=[], **kwargs):
        """Change MR-level allowed approvers and approver groups.

        Args:
            approver_ids (list): User IDs that can approve MRs
            approver_group_ids (list): Group IDs whose members can approve MRs

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabUpdateError: If the server failed to perform the request
        """
        path = '%s/%s/approvers' % (self._parent.manager.path,
                                    self._parent.get_id())
        data = {'approver_ids': approver_ids,
                'approver_group_ids': approver_group_ids}
        self.gitlab.http_put(path, post_data=data, **kwargs)


class ProjectMergeRequestAwardEmoji(ObjectDeleteMixin, RESTObject):
    pass


class ProjectMergeRequestAwardEmojiManager(NoUpdateMixin, RESTManager):
    _path = '/projects/%(project_id)s/merge_requests/%(mr_iid)s/award_emoji'
    _obj_cls = ProjectMergeRequestAwardEmoji
    _from_parent_attrs = {'project_id': 'project_id', 'mr_iid': 'iid'}
    _create_attrs = (('name', ), tuple())


class ProjectMergeRequestDiff(RESTObject):
    pass


class ProjectMergeRequestDiffManager(RetrieveMixin, RESTManager):
    _path = '/projects/%(project_id)s/merge_requests/%(mr_iid)s/versions'
    _obj_cls = ProjectMergeRequestDiff
    _from_parent_attrs = {'project_id': 'project_id', 'mr_iid': 'iid'}


class ProjectMergeRequestNoteAwardEmoji(ObjectDeleteMixin, RESTObject):
    pass


class ProjectMergeRequestNoteAwardEmojiManager(NoUpdateMixin, RESTManager):
    _path = ('/projects/%(project_id)s/merge_requests/%(mr_iid)s'
             '/notes/%(note_id)s/award_emoji')
    _obj_cls = ProjectMergeRequestNoteAwardEmoji
    _from_parent_attrs = {'project_id': 'project_id',
                          'mr_iid': 'mr_iid',
                          'note_id': 'id'}
    _create_attrs = (('name', ), tuple())


class ProjectMergeRequestNote(SaveMixin, ObjectDeleteMixin, RESTObject):
    _managers = (('awardemojis', 'ProjectMergeRequestNoteAwardEmojiManager'),)


class ProjectMergeRequestNoteManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/merge_requests/%(mr_iid)s/notes'
    _obj_cls = ProjectMergeRequestNote
    _from_parent_attrs = {'project_id': 'project_id', 'mr_iid': 'iid'}
    _create_attrs = (('body', ), tuple())
    _update_attrs = (('body', ), tuple())


class ProjectMergeRequestDiscussionNote(SaveMixin, ObjectDeleteMixin,
                                        RESTObject):
    pass


class ProjectMergeRequestDiscussionNoteManager(GetMixin, CreateMixin,
                                               UpdateMixin, DeleteMixin,
                                               RESTManager):
    _path = ('/projects/%(project_id)s/merge_requests/%(mr_iid)s/'
             'discussions/%(discussion_id)s/notes')
    _obj_cls = ProjectMergeRequestDiscussionNote
    _from_parent_attrs = {'project_id': 'project_id',
                          'mr_iid': 'mr_iid',
                          'discussion_id': 'id'}
    _create_attrs = (('body',), ('created_at',))
    _update_attrs = (('body',), tuple())


class ProjectMergeRequestDiscussion(SaveMixin, RESTObject):
    _managers = (('notes', 'ProjectMergeRequestDiscussionNoteManager'),)


class ProjectMergeRequestDiscussionManager(RetrieveMixin, CreateMixin,
                                           UpdateMixin, RESTManager):
    _path = '/projects/%(project_id)s/merge_requests/%(mr_iid)s/discussions'
    _obj_cls = ProjectMergeRequestDiscussion
    _from_parent_attrs = {'project_id': 'project_id', 'mr_iid': 'iid'}
    _create_attrs = (('body',), ('created_at', 'position'))
    _update_attrs = (('resolved',), tuple())


class ProjectMergeRequest(SubscribableMixin, TodoMixin, TimeTrackingMixin,
                          ParticipantsMixin, SaveMixin, ObjectDeleteMixin,
                          RESTObject):
    _id_attr = 'iid'

    _managers = (
        ('approvals', 'ProjectMergeRequestApprovalManager'),
        ('awardemojis', 'ProjectMergeRequestAwardEmojiManager'),
        ('diffs', 'ProjectMergeRequestDiffManager'),
        ('discussions', 'ProjectMergeRequestDiscussionManager'),
        ('notes', 'ProjectMergeRequestNoteManager'),
    )

    @cli.register_custom_action('ProjectMergeRequest')
    @exc.on_http_error(exc.GitlabMROnBuildSuccessError)
    def cancel_merge_when_pipeline_succeeds(self, **kwargs):
        """Cancel merge when the pipeline succeeds.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabMROnBuildSuccessError: If the server could not handle the
                request
        """

        path = ('%s/%s/cancel_merge_when_pipeline_succeeds' %
                (self.manager.path, self.get_id()))
        server_data = self.manager.gitlab.http_put(path, **kwargs)
        self._update_attrs(server_data)

    @cli.register_custom_action('ProjectMergeRequest')
    @exc.on_http_error(exc.GitlabListError)
    def closes_issues(self, **kwargs):
        """List issues that will close on merge."

        Args:
            all (bool): If True, return all the items, without pagination
            per_page (int): Number of items to retrieve per request
            page (int): ID of the page to return (starts with page 1)
            as_list (bool): If set to False and no pagination option is
                defined, return a generator instead of a list
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabListError: If the list could not be retrieved

        Returns:
            RESTObjectList: List of issues
        """
        path = '%s/%s/closes_issues' % (self.manager.path, self.get_id())
        data_list = self.manager.gitlab.http_list(path, as_list=False,
                                                  **kwargs)
        manager = ProjectIssueManager(self.manager.gitlab,
                                      parent=self.manager._parent)
        return RESTObjectList(manager, ProjectIssue, data_list)

    @cli.register_custom_action('ProjectMergeRequest')
    @exc.on_http_error(exc.GitlabListError)
    def commits(self, **kwargs):
        """List the merge request commits.

        Args:
            all (bool): If True, return all the items, without pagination
            per_page (int): Number of items to retrieve per request
            page (int): ID of the page to return (starts with page 1)
            as_list (bool): If set to False and no pagination option is
                defined, return a generator instead of a list
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabListError: If the list could not be retrieved

        Returns:
            RESTObjectList: The list of commits
        """

        path = '%s/%s/commits' % (self.manager.path, self.get_id())
        data_list = self.manager.gitlab.http_list(path, as_list=False,
                                                  **kwargs)
        manager = ProjectCommitManager(self.manager.gitlab,
                                       parent=self.manager._parent)
        return RESTObjectList(manager, ProjectCommit, data_list)

    @cli.register_custom_action('ProjectMergeRequest')
    @exc.on_http_error(exc.GitlabListError)
    def changes(self, **kwargs):
        """List the merge request changes.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabListError: If the list could not be retrieved

        Returns:
            RESTObjectList: List of changes
        """
        path = '%s/%s/changes' % (self.manager.path, self.get_id())
        return self.manager.gitlab.http_get(path, **kwargs)

    @cli.register_custom_action('ProjectMergeRequest')
    @exc.on_http_error(exc.GitlabListError)
    def pipelines(self, **kwargs):
        """List the merge request pipelines.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabListError: If the list could not be retrieved

        Returns:
            RESTObjectList: List of changes
        """
        path = '%s/%s/pipelines' % (self.manager.path, self.get_id())
        return self.manager.gitlab.http_get(path, **kwargs)

    @cli.register_custom_action('ProjectMergeRequest', tuple(),
                                ('merge_commit_message',
                                 'should_remove_source_branch',
                                 'merge_when_pipeline_succeeds'))
    @exc.on_http_error(exc.GitlabMRClosedError)
    def merge(self, merge_commit_message=None,
              should_remove_source_branch=False,
              merge_when_pipeline_succeeds=False,
              **kwargs):
        """Accept the merge request.

        Args:
            merge_commit_message (bool): Commit message
            should_remove_source_branch (bool): If True, removes the source
                                                branch
            merge_when_pipeline_succeeds (bool): Wait for the build to succeed,
                                                 then merge
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabMRClosedError: If the merge failed
        """
        path = '%s/%s/merge' % (self.manager.path, self.get_id())
        data = {}
        if merge_commit_message:
            data['merge_commit_message'] = merge_commit_message
        if should_remove_source_branch:
            data['should_remove_source_branch'] = True
        if merge_when_pipeline_succeeds:
            data['merge_when_pipeline_succeeds'] = True

        server_data = self.manager.gitlab.http_put(path, post_data=data,
                                                   **kwargs)
        self._update_attrs(server_data)


class ProjectMergeRequestManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/merge_requests'
    _obj_cls = ProjectMergeRequest
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (
        ('source_branch', 'target_branch', 'title'),
        ('assignee_id', 'description', 'target_project_id', 'labels',
         'milestone_id', 'remove_source_branch', 'allow_maintainer_to_push',
         'squash')
    )
    _update_attrs = (
        tuple(),
        ('target_branch', 'assignee_id', 'title', 'description', 'state_event',
         'labels', 'milestone_id', 'remove_source_branch', 'discussion_locked',
         'allow_maintainer_to_push', 'squash'))
    _list_filters = ('state', 'order_by', 'sort', 'milestone', 'view',
                     'labels', 'created_after', 'created_before',
                     'updated_after', 'updated_before', 'scope', 'author_id',
                     'assignee_id', 'my_reaction_emoji', 'source_branch',
                     'target_branch', 'search')
    _types = {'labels': types.ListAttribute}


class ProjectMilestone(SaveMixin, ObjectDeleteMixin, RESTObject):
    _short_print_attr = 'title'

    @cli.register_custom_action('ProjectMilestone')
    @exc.on_http_error(exc.GitlabListError)
    def issues(self, **kwargs):
        """List issues related to this milestone.

        Args:
            all (bool): If True, return all the items, without pagination
            per_page (int): Number of items to retrieve per request
            page (int): ID of the page to return (starts with page 1)
            as_list (bool): If set to False and no pagination option is
                defined, return a generator instead of a list
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabListError: If the list could not be retrieved

        Returns:
            RESTObjectList: The list of issues
        """

        path = '%s/%s/issues' % (self.manager.path, self.get_id())
        data_list = self.manager.gitlab.http_list(path, as_list=False,
                                                  **kwargs)
        manager = ProjectIssueManager(self.manager.gitlab,
                                      parent=self.manager._parent)
        # FIXME(gpocentek): the computed manager path is not correct
        return RESTObjectList(manager, ProjectIssue, data_list)

    @cli.register_custom_action('ProjectMilestone')
    @exc.on_http_error(exc.GitlabListError)
    def merge_requests(self, **kwargs):
        """List the merge requests related to this milestone.

        Args:
            all (bool): If True, return all the items, without pagination
            per_page (int): Number of items to retrieve per request
            page (int): ID of the page to return (starts with page 1)
            as_list (bool): If set to False and no pagination option is
                defined, return a generator instead of a list
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabListError: If the list could not be retrieved

        Returns:
            RESTObjectList: The list of merge requests
        """
        path = '%s/%s/merge_requests' % (self.manager.path, self.get_id())
        data_list = self.manager.gitlab.http_list(path, as_list=False,
                                                  **kwargs)
        manager = ProjectMergeRequestManager(self.manager.gitlab,
                                             parent=self.manager._parent)
        # FIXME(gpocentek): the computed manager path is not correct
        return RESTObjectList(manager, ProjectMergeRequest, data_list)


class ProjectMilestoneManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/milestones'
    _obj_cls = ProjectMilestone
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('title', ), ('description', 'due_date', 'start_date',
                                   'state_event'))
    _update_attrs = (tuple(), ('title', 'description', 'due_date',
                               'start_date', 'state_event'))
    _list_filters = ('iids', 'state', 'search')


class ProjectLabel(SubscribableMixin, SaveMixin, ObjectDeleteMixin,
                   RESTObject):
    _id_attr = 'name'

    # Update without ID, but we need an ID to get from list.
    @exc.on_http_error(exc.GitlabUpdateError)
    def save(self, **kwargs):
        """Saves the changes made to the object to the server.

        The object is updated to match what the server returns.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct.
            GitlabUpdateError: If the server cannot perform the request.
        """
        updated_data = self._get_updated_data()

        # call the manager
        server_data = self.manager.update(None, updated_data, **kwargs)
        self._update_attrs(server_data)


class ProjectLabelManager(ListMixin, CreateMixin, UpdateMixin, DeleteMixin,
                          RESTManager):
    _path = '/projects/%(project_id)s/labels'
    _obj_cls = ProjectLabel
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('name', 'color'), ('description', 'priority'))
    _update_attrs = (('name', ),
                     ('new_name', 'color', 'description', 'priority'))

    # Delete without ID.
    @exc.on_http_error(exc.GitlabDeleteError)
    def delete(self, name, **kwargs):
        """Delete a Label on the server.

        Args:
            name: The name of the label
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabDeleteError: If the server cannot perform the request
        """
        self.gitlab.http_delete(self.path, query_data={'name': name}, **kwargs)


class ProjectFile(SaveMixin, ObjectDeleteMixin, RESTObject):
    _id_attr = 'file_path'
    _short_print_attr = 'file_path'

    def decode(self):
        """Returns the decoded content of the file.

        Returns:
            (str): the decoded content.
        """
        return base64.b64decode(self.content)

    def save(self, branch, commit_message, **kwargs):
        """Save the changes made to the file to the server.

        The object is updated to match what the server returns.

        Args:
            branch (str): Branch in which the file will be updated
            commit_message (str): Message to send with the commit
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabUpdateError: If the server cannot perform the request
        """
        self.branch = branch
        self.commit_message = commit_message
        self.file_path = self.file_path.replace('/', '%2F')
        super(ProjectFile, self).save(**kwargs)

    def delete(self, branch, commit_message, **kwargs):
        """Delete the file from the server.

        Args:
            branch (str): Branch from which the file will be removed
            commit_message (str): Commit message for the deletion
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabDeleteError: If the server cannot perform the request
        """
        file_path = self.get_id().replace('/', '%2F')
        self.manager.delete(file_path, branch, commit_message, **kwargs)


class ProjectFileManager(GetMixin, CreateMixin, UpdateMixin, DeleteMixin,
                         RESTManager):
    _path = '/projects/%(project_id)s/repository/files'
    _obj_cls = ProjectFile
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('file_path', 'branch', 'content', 'commit_message'),
                     ('encoding', 'author_email', 'author_name'))
    _update_attrs = (('file_path', 'branch', 'content', 'commit_message'),
                     ('encoding', 'author_email', 'author_name'))

    @cli.register_custom_action('ProjectFileManager', ('file_path', 'ref'))
    def get(self, file_path, ref, **kwargs):
        """Retrieve a single file.

        Args:
            file_path (str): Path of the file to retrieve
            ref (str): Name of the branch, tag or commit
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the file could not be retrieved

        Returns:
            object: The generated RESTObject
        """
        file_path = file_path.replace('/', '%2F')
        return GetMixin.get(self, file_path, ref=ref, **kwargs)

    @cli.register_custom_action('ProjectFileManager',
                                ('file_path', 'branch', 'content',
                                 'commit_message'),
                                ('encoding', 'author_email', 'author_name'))
    @exc.on_http_error(exc.GitlabCreateError)
    def create(self, data, **kwargs):
        """Create a new object.

        Args:
            data (dict): parameters to send to the server to create the
                         resource
            **kwargs: Extra options to send to the server (e.g. sudo)

        Returns:
            RESTObject: a new instance of the managed object class built with
                the data sent by the server

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the server cannot perform the request
        """

        self._check_missing_create_attrs(data)
        new_data = data.copy()
        file_path = new_data.pop('file_path').replace('/', '%2F')
        path = '%s/%s' % (self.path, file_path)
        server_data = self.gitlab.http_post(path, post_data=new_data, **kwargs)
        return self._obj_cls(self, server_data)

    @exc.on_http_error(exc.GitlabUpdateError)
    def update(self, file_path, 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 options to send to the server (e.g. sudo)

        Returns:
            dict: The new object data (*not* a RESTObject)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabUpdateError: If the server cannot perform the request
        """

        data = new_data.copy()
        file_path = file_path.replace('/', '%2F')
        data['file_path'] = file_path
        path = '%s/%s' % (self.path, file_path)
        self._check_missing_update_attrs(data)
        return self.gitlab.http_put(path, post_data=data, **kwargs)

    @cli.register_custom_action('ProjectFileManager', ('file_path', 'branch',
                                                       'commit_message'))
    @exc.on_http_error(exc.GitlabDeleteError)
    def delete(self, file_path, branch, commit_message, **kwargs):
        """Delete a file on the server.

        Args:
            file_path (str): Path of the file to remove
            branch (str): Branch from which the file will be removed
            commit_message (str): Commit message for the deletion
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabDeleteError: If the server cannot perform the request
        """
        path = '%s/%s' % (self.path, file_path.replace('/', '%2F'))
        data = {'branch': branch, 'commit_message': commit_message}
        self.gitlab.http_delete(path, query_data=data, **kwargs)

    @cli.register_custom_action('ProjectFileManager', ('file_path', 'ref'))
    @exc.on_http_error(exc.GitlabGetError)
    def raw(self, file_path, ref, streamed=False, action=None, chunk_size=1024,
            **kwargs):
        """Return the content of a file for a commit.

        Args:
            ref (str): ID of the commit
            filepath (str): Path of the file to return
            streamed (bool): If True the data will be processed by chunks of
                `chunk_size` and each chunk is passed to `action` for
                treatment
            action (callable): Callable responsible of dealing with chunk of
                data
            chunk_size (int): Size of each chunk
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the file could not be retrieved

        Returns:
            str: The file content
        """
        file_path = file_path.replace('/', '%2F').replace('.', '%2E')
        path = '%s/%s/raw' % (self.path, file_path)
        query_data = {'ref': ref}
        result = self.gitlab.http_get(path, query_data=query_data,
                                      streamed=streamed, **kwargs)
        return utils.response_content(result, streamed, action, chunk_size)


class ProjectPipelineJob(RESTObject):
    pass


class ProjectPipelineJobManager(ListMixin, RESTManager):
    _path = '/projects/%(project_id)s/pipelines/%(pipeline_id)s/jobs'
    _obj_cls = ProjectPipelineJob
    _from_parent_attrs = {'project_id': 'project_id',
                          'pipeline_id': 'id'}
    _list_filters = ('scope',)


class ProjectPipeline(RESTObject, RefreshMixin):
    _managers = (('jobs', 'ProjectPipelineJobManager'), )

    @cli.register_custom_action('ProjectPipeline')
    @exc.on_http_error(exc.GitlabPipelineCancelError)
    def cancel(self, **kwargs):
        """Cancel the job.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabPipelineCancelError: If the request failed
        """
        path = '%s/%s/cancel' % (self.manager.path, self.get_id())
        self.manager.gitlab.http_post(path)

    @cli.register_custom_action('ProjectPipeline')
    @exc.on_http_error(exc.GitlabPipelineRetryError)
    def retry(self, **kwargs):
        """Retry the job.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabPipelineRetryError: If the request failed
        """
        path = '%s/%s/retry' % (self.manager.path, self.get_id())
        self.manager.gitlab.http_post(path)


class ProjectPipelineManager(RetrieveMixin, CreateMixin, RESTManager):
    _path = '/projects/%(project_id)s/pipelines'
    _obj_cls = ProjectPipeline
    _from_parent_attrs = {'project_id': 'id'}
    _list_filters = ('scope', 'status', 'ref', 'sha', 'yaml_errors', 'name',
                     'username', 'order_by', 'sort')
    _create_attrs = (('ref', ), tuple())

    def create(self, data, **kwargs):
        """Creates a new object.

        Args:
            data (dict): Parameters to send to the server to create the
                         resource
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the server cannot perform the request

        Returns:
            RESTObject: A new instance of the managed object class build with
                the data sent by the server
        """
        path = self.path[:-1]  # drop the 's'
        return CreateMixin.create(self, data, path=path, **kwargs)


class ProjectPipelineScheduleVariable(SaveMixin, ObjectDeleteMixin,
                                      RESTObject):
    _id_attr = 'key'


class ProjectPipelineScheduleVariableManager(CreateMixin, UpdateMixin,
                                             DeleteMixin, RESTManager):
    _path = ('/projects/%(project_id)s/pipeline_schedules/'
             '%(pipeline_schedule_id)s/variables')
    _obj_cls = ProjectPipelineScheduleVariable
    _from_parent_attrs = {'project_id': 'project_id',
                          'pipeline_schedule_id': 'id'}
    _create_attrs = (('key', 'value'), tuple())
    _update_attrs = (('key', 'value'), tuple())


class ProjectPipelineSchedule(SaveMixin, ObjectDeleteMixin, RESTObject):
    _managers = (('variables', 'ProjectPipelineScheduleVariableManager'),)

    @cli.register_custom_action('ProjectPipelineSchedule')
    @exc.on_http_error(exc.GitlabOwnershipError)
    def take_ownership(self, **kwargs):
        """Update the owner of a pipeline schedule.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabOwnershipError: If the request failed
        """
        path = '%s/%s/take_ownership' % (self.manager.path, self.get_id())
        server_data = self.manager.gitlab.http_post(path, **kwargs)
        self._update_attrs(server_data)


class ProjectPipelineScheduleManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/pipeline_schedules'
    _obj_cls = ProjectPipelineSchedule
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('description', 'ref', 'cron'),
                     ('cron_timezone', 'active'))
    _update_attrs = (tuple(),
                     ('description', 'ref', 'cron', 'cron_timezone', 'active'))


class ProjectPushRules(SaveMixin, ObjectDeleteMixin, RESTObject):
    _id_attr = None


class ProjectPushRulesManager(GetWithoutIdMixin, CreateMixin, UpdateMixin,
                              DeleteMixin, RESTManager):
    _path = '/projects/%(project_id)s/push_rule'
    _obj_cls = ProjectPushRules
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (tuple(),
                     ('deny_delete_tag', 'member_check',
                      'prevent_secrets', 'commit_message_regex',
                      'branch_name_regex', 'author_email_regex',
                      'file_name_regex', 'max_file_size'))
    _update_attrs = (tuple(),
                     ('deny_delete_tag', 'member_check',
                      'prevent_secrets', 'commit_message_regex',
                      'branch_name_regex', 'author_email_regex',
                      'file_name_regex', 'max_file_size'))


class ProjectSnippetNoteAwardEmoji(ObjectDeleteMixin, RESTObject):
    pass


class ProjectSnippetNoteAwardEmojiManager(NoUpdateMixin, RESTManager):
    _path = ('/projects/%(project_id)s/snippets/%(snippet_id)s'
             '/notes/%(note_id)s/award_emoji')
    _obj_cls = ProjectSnippetNoteAwardEmoji
    _from_parent_attrs = {'project_id': 'project_id',
                          'snippet_id': 'snippet_id',
                          'note_id': 'id'}
    _create_attrs = (('name', ), tuple())


class ProjectSnippetNote(SaveMixin, ObjectDeleteMixin, RESTObject):
    _managers = (('awardemojis', 'ProjectSnippetNoteAwardEmojiManager'),)


class ProjectSnippetNoteManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/snippets/%(snippet_id)s/notes'
    _obj_cls = ProjectSnippetNote
    _from_parent_attrs = {'project_id': 'project_id',
                          'snippet_id': 'id'}
    _create_attrs = (('body', ), tuple())
    _update_attrs = (('body', ), tuple())


class ProjectSnippetAwardEmoji(ObjectDeleteMixin, RESTObject):
    pass


class ProjectSnippetAwardEmojiManager(NoUpdateMixin, RESTManager):
    _path = '/projects/%(project_id)s/snippets/%(snippet_id)s/award_emoji'
    _obj_cls = ProjectSnippetAwardEmoji
    _from_parent_attrs = {'project_id': 'project_id', 'snippet_id': 'id'}
    _create_attrs = (('name', ), tuple())


class ProjectSnippetDiscussionNote(SaveMixin, ObjectDeleteMixin, RESTObject):
    pass


class ProjectSnippetDiscussionNoteManager(GetMixin, CreateMixin, UpdateMixin,
                                          DeleteMixin, RESTManager):
    _path = ('/projects/%(project_id)s/snippets/%(snippet_id)s/'
             'discussions/%(discussion_id)s/notes')
    _obj_cls = ProjectSnippetDiscussionNote
    _from_parent_attrs = {'project_id': 'project_id',
                          'snippet_id': 'snippet_id',
                          'discussion_id': 'id'}
    _create_attrs = (('body',), ('created_at',))
    _update_attrs = (('body',), tuple())


class ProjectSnippetDiscussion(RESTObject):
    _managers = (('notes', 'ProjectSnippetDiscussionNoteManager'),)


class ProjectSnippetDiscussionManager(RetrieveMixin, CreateMixin, RESTManager):
    _path = '/projects/%(project_id)s/snippets/%(snippet_id)s/discussions'
    _obj_cls = ProjectSnippetDiscussion
    _from_parent_attrs = {'project_id': 'project_id', 'snippet_id': 'id'}
    _create_attrs = (('body',), ('created_at',))


class ProjectSnippet(UserAgentDetailMixin, SaveMixin, ObjectDeleteMixin,
                     RESTObject):
    _url = '/projects/%(project_id)s/snippets'
    _short_print_attr = 'title'
    _managers = (
        ('awardemojis', 'ProjectSnippetAwardEmojiManager'),
        ('discussions', 'ProjectSnippetDiscussionManager'),
        ('notes', 'ProjectSnippetNoteManager'),
    )

    @cli.register_custom_action('ProjectSnippet')
    @exc.on_http_error(exc.GitlabGetError)
    def content(self, streamed=False, action=None, chunk_size=1024, **kwargs):
        """Return the content of a snippet.

        Args:
            streamed (bool): If True the data will be processed by chunks of
                `chunk_size` and each chunk is passed to `action` for
                treatment.
            action (callable): Callable responsible of dealing with chunk of
                data
            chunk_size (int): Size of each chunk
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the content could not be retrieved

        Returns:
            str: The snippet content
        """
        path = "%s/%s/raw" % (self.manager.path, self.get_id())
        result = self.manager.gitlab.http_get(path, streamed=streamed,
                                              **kwargs)
        return utils.response_content(result, streamed, action, chunk_size)


class ProjectSnippetManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/snippets'
    _obj_cls = ProjectSnippet
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('title', 'file_name', 'code'),
                     ('lifetime', 'visibility'))
    _update_attrs = (tuple(), ('title', 'file_name', 'code', 'visibility'))


class ProjectTrigger(SaveMixin, ObjectDeleteMixin, RESTObject):
    @cli.register_custom_action('ProjectTrigger')
    @exc.on_http_error(exc.GitlabOwnershipError)
    def take_ownership(self, **kwargs):
        """Update the owner of a trigger.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabOwnershipError: If the request failed
        """
        path = '%s/%s/take_ownership' % (self.manager.path, self.get_id())
        server_data = self.manager.gitlab.http_post(path, **kwargs)
        self._update_attrs(server_data)


class ProjectTriggerManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/triggers'
    _obj_cls = ProjectTrigger
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('description', ), tuple())
    _update_attrs = (('description', ), tuple())


class ProjectUser(RESTObject):
    pass


class ProjectUserManager(ListMixin, RESTManager):
    _path = '/projects/%(project_id)s/users'
    _obj_cls = ProjectUser
    _from_parent_attrs = {'project_id': 'id'}
    _list_filters = ('search',)


class ProjectVariable(SaveMixin, ObjectDeleteMixin, RESTObject):
    _id_attr = 'key'


class ProjectVariableManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/variables'
    _obj_cls = ProjectVariable
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('key', 'value'), tuple())
    _update_attrs = (('key', 'value'), tuple())


class ProjectService(SaveMixin, ObjectDeleteMixin, RESTObject):
    pass


class ProjectServiceManager(GetMixin, UpdateMixin, DeleteMixin, RESTManager):
    _path = '/projects/%(project_id)s/services'
    _from_parent_attrs = {'project_id': 'id'}
    _obj_cls = ProjectService

    _service_attrs = {
        'asana': (('api_key', ), ('restrict_to_branch', )),
        'assembla': (('token', ), ('subdomain', )),
        'bamboo': (('bamboo_url', 'build_key', 'username', 'password'),
                   tuple()),
        'buildkite': (('token', 'project_url'), ('enable_ssl_verification', )),
        'campfire': (('token', ), ('subdomain', 'room')),
        'custom-issue-tracker': (('new_issue_url', 'issues_url',
                                  'project_url'),
                                 ('description', 'title')),
        'drone-ci': (('token', 'drone_url'), ('enable_ssl_verification', )),
        'emails-on-push': (('recipients', ), ('disable_diffs',
                                              'send_from_committer_email')),
        'builds-email': (('recipients', ), ('add_pusher',
                                            'notify_only_broken_builds')),
        'pipelines-email': (('recipients', ), ('add_pusher',
                                               'notify_only_broken_builds')),
        'external-wiki': (('external_wiki_url', ), tuple()),
        'flowdock': (('token', ), tuple()),
        'gemnasium': (('api_key', 'token', ), tuple()),
        'hipchat': (('token', ), ('color', 'notify', 'room', 'api_version',
                                  'server')),
        'irker': (('recipients', ), ('default_irc_uri', 'server_port',
                                     'server_host', 'colorize_messages')),
        'jira': (('url', 'project_key'),
                 ('new_issue_url', 'project_url', 'issues_url', 'api_url',
                  'description', 'username', 'password',
                  'jira_issue_transition_id')),
        'mattermost': (('webhook',), ('username', 'channel')),
        'pivotaltracker': (('token', ), tuple()),
        'pushover': (('api_key', 'user_key', 'priority'), ('device', 'sound')),
        'redmine': (('new_issue_url', 'project_url', 'issues_url'),
                    ('description', )),
        'slack': (('webhook', ), ('username', 'channel')),
        'teamcity': (('teamcity_url', 'build_type', 'username', 'password'),
                     tuple())
    }

    def get(self, id, **kwargs):
        """Retrieve a single object.

        Args:
            id (int or str): ID of the object to retrieve
            lazy (bool): If True, don't request the server, but create a
                         shallow object giving access to the managers. This is
                         useful if you want to avoid useless calls to the API.
            **kwargs: Extra options to send to the server (e.g. sudo)

        Returns:
            object: The generated RESTObject.

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the server cannot perform the request
        """
        obj = super(ProjectServiceManager, self).get(id, **kwargs)
        obj.id = id
        return obj

    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 options to send to the server (e.g. sudo)

        Returns:
            dict: The new object data (*not* a RESTObject)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabUpdateError: If the server cannot perform the request
        """
        super(ProjectServiceManager, self).update(id, new_data, **kwargs)
        self.id = id

    @cli.register_custom_action('ProjectServiceManager')
    def available(self, **kwargs):
        """List the services known by python-gitlab.

        Returns:
            list (str): The list of service code names.
        """
        return list(self._service_attrs.keys())


class ProjectAccessRequest(AccessRequestMixin, ObjectDeleteMixin, RESTObject):
    pass


class ProjectAccessRequestManager(ListMixin, CreateMixin, DeleteMixin,
                                  RESTManager):
    _path = '/projects/%(project_id)s/access_requests'
    _obj_cls = ProjectAccessRequest
    _from_parent_attrs = {'project_id': 'id'}


class ProjectApproval(SaveMixin, RESTObject):
    _id_attr = None


class ProjectApprovalManager(GetWithoutIdMixin, UpdateMixin, RESTManager):
    _path = '/projects/%(project_id)s/approvals'
    _obj_cls = ProjectApproval
    _from_parent_attrs = {'project_id': 'id'}
    _update_attrs = (tuple(),
                     ('approvals_before_merge', 'reset_approvals_on_push',
                      'disable_overriding_approvers_per_merge_request'))
    _update_uses_post = True

    @exc.on_http_error(exc.GitlabUpdateError)
    def set_approvers(self, approver_ids=[], approver_group_ids=[], **kwargs):
        """Change project-level allowed approvers and approver groups.

        Args:
            approver_ids (list): User IDs that can approve MRs
            approver_group_ids (list): Group IDs whose members can approve MRs

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabUpdateError: If the server failed to perform the request
        """

        path = '/projects/%s/approvers' % self._parent.get_id()
        data = {'approver_ids': approver_ids,
                'approver_group_ids': approver_group_ids}
        self.gitlab.http_put(path, post_data=data, **kwargs)


class ProjectDeployment(RESTObject):
    pass


class ProjectDeploymentManager(RetrieveMixin, RESTManager):
    _path = '/projects/%(project_id)s/deployments'
    _obj_cls = ProjectDeployment
    _from_parent_attrs = {'project_id': 'id'}
    _list_filters = ('order_by', 'sort')


class ProjectProtectedBranch(ObjectDeleteMixin, RESTObject):
    _id_attr = 'name'


class ProjectProtectedBranchManager(NoUpdateMixin, RESTManager):
    _path = '/projects/%(project_id)s/protected_branches'
    _obj_cls = ProjectProtectedBranch
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('name', ), ('push_access_level', 'merge_access_level'))


class ProjectRunner(ObjectDeleteMixin, RESTObject):
    pass


class ProjectRunnerManager(NoUpdateMixin, RESTManager):
    _path = '/projects/%(project_id)s/runners'
    _obj_cls = ProjectRunner
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('runner_id', ), tuple())


class ProjectWiki(SaveMixin, ObjectDeleteMixin, RESTObject):
    _id_attr = 'slug'
    _short_print_attr = 'slug'


class ProjectWikiManager(CRUDMixin, RESTManager):
    _path = '/projects/%(project_id)s/wikis'
    _obj_cls = ProjectWiki
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (('title', 'content'), ('format', ))
    _update_attrs = (tuple(), ('title', 'content', 'format'))
    _list_filters = ('with_content', )


class ProjectExport(RefreshMixin, RESTObject):
    _id_attr = None

    @cli.register_custom_action('ProjectExport')
    @exc.on_http_error(exc.GitlabGetError)
    def download(self, streamed=False, action=None, chunk_size=1024, **kwargs):
        """Download the archive of a project export.

        Args:
            streamed (bool): If True the data will be processed by chunks of
                `chunk_size` and each chunk is passed to `action` for
                reatment
            action (callable): Callable responsible of dealing with chunk of
                data
            chunk_size (int): Size of each chunk
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the server failed to perform the request

        Returns:
            str: The blob content if streamed is False, None otherwise
        """
        path = '/projects/%d/export/download' % self.project_id
        result = self.manager.gitlab.http_get(path, streamed=streamed,
                                              **kwargs)
        return utils.response_content(result, streamed, action, chunk_size)


class ProjectExportManager(GetWithoutIdMixin, CreateMixin, RESTManager):
    _path = '/projects/%(project_id)s/export'
    _obj_cls = ProjectExport
    _from_parent_attrs = {'project_id': 'id'}
    _create_attrs = (tuple(), ('description',))


class ProjectImport(RefreshMixin, RESTObject):
    _id_attr = None


class ProjectImportManager(GetWithoutIdMixin, RESTManager):
    _path = '/projects/%(project_id)s/import'
    _obj_cls = ProjectImport
    _from_parent_attrs = {'project_id': 'id'}


class Project(SaveMixin, ObjectDeleteMixin, RESTObject):
    _short_print_attr = 'path'
    _managers = (
        ('accessrequests', 'ProjectAccessRequestManager'),
        ('approvals', 'ProjectApprovalManager'),
        ('badges', 'ProjectBadgeManager'),
        ('boards', 'ProjectBoardManager'),
        ('branches', 'ProjectBranchManager'),
        ('jobs', 'ProjectJobManager'),
        ('commits', 'ProjectCommitManager'),
        ('customattributes', 'ProjectCustomAttributeManager'),
        ('deployments', 'ProjectDeploymentManager'),
        ('environments', 'ProjectEnvironmentManager'),
        ('events', 'ProjectEventManager'),
        ('exports', 'ProjectExportManager'),
        ('files', 'ProjectFileManager'),
        ('forks', 'ProjectForkManager'),
        ('hooks', 'ProjectHookManager'),
        ('keys', 'ProjectKeyManager'),
        ('imports', 'ProjectImportManager'),
        ('issues', 'ProjectIssueManager'),
        ('labels', 'ProjectLabelManager'),
        ('members', 'ProjectMemberManager'),
        ('mergerequests', 'ProjectMergeRequestManager'),
        ('milestones', 'ProjectMilestoneManager'),
        ('notes', 'ProjectNoteManager'),
        ('notificationsettings', 'ProjectNotificationSettingsManager'),
        ('pagesdomains', 'ProjectPagesDomainManager'),
        ('pipelines', 'ProjectPipelineManager'),
        ('protectedbranches', 'ProjectProtectedBranchManager'),
        ('protectedtags', 'ProjectProtectedTagManager'),
        ('pipelineschedules', 'ProjectPipelineScheduleManager'),
        ('pushrules', 'ProjectPushRulesManager'),
        ('runners', 'ProjectRunnerManager'),
        ('services', 'ProjectServiceManager'),
        ('snippets', 'ProjectSnippetManager'),
        ('tags', 'ProjectTagManager'),
        ('users', 'ProjectUserManager'),
        ('triggers', 'ProjectTriggerManager'),
        ('variables', 'ProjectVariableManager'),
        ('wikis', 'ProjectWikiManager'),
    )

    @cli.register_custom_action('Project', tuple(), ('path', 'ref'))
    @exc.on_http_error(exc.GitlabGetError)
    def repository_tree(self, path='', ref='', recursive=False, **kwargs):
        """Return a list of files in the repository.

        Args:
            path (str): Path of the top folder (/ by default)
            ref (str): Reference to a commit or branch
            recursive (bool): Whether to get the tree recursively
            all (bool): If True, return all the items, without pagination
            per_page (int): Number of items to retrieve per request
            page (int): ID of the page to return (starts with page 1)
            as_list (bool): If set to False and no pagination option is
                defined, return a generator instead of a list
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the server failed to perform the request

        Returns:
            list: The representation of the tree
        """
        gl_path = '/projects/%s/repository/tree' % self.get_id()
        query_data = {'recursive': recursive}
        if path:
            query_data['path'] = path
        if ref:
            query_data['ref'] = ref
        return self.manager.gitlab.http_list(gl_path, query_data=query_data,
                                             **kwargs)

    @cli.register_custom_action('Project', ('sha', ))
    @exc.on_http_error(exc.GitlabGetError)
    def repository_blob(self, sha, **kwargs):
        """Return a file by blob SHA.

        Args:
            sha(str): ID of the blob
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the server failed to perform the request

        Returns:
            dict: The blob content and metadata
        """

        path = '/projects/%s/repository/blobs/%s' % (self.get_id(), sha)
        return self.manager.gitlab.http_get(path, **kwargs)

    @cli.register_custom_action('Project', ('sha', ))
    @exc.on_http_error(exc.GitlabGetError)
    def repository_raw_blob(self, sha, streamed=False, action=None,
                            chunk_size=1024, **kwargs):
        """Return the raw file contents for a blob.

        Args:
            sha(str): ID of the blob
            streamed (bool): If True the data will be processed by chunks of
                `chunk_size` and each chunk is passed to `action` for
                treatment
            action (callable): Callable responsible of dealing with chunk of
                data
            chunk_size (int): Size of each chunk
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the server failed to perform the request

        Returns:
            str: The blob content if streamed is False, None otherwise
        """
        path = '/projects/%s/repository/blobs/%s/raw' % (self.get_id(), sha)
        result = self.manager.gitlab.http_get(path, streamed=streamed,
                                              **kwargs)
        return utils.response_content(result, streamed, action, chunk_size)

    @cli.register_custom_action('Project', ('from_', 'to'))
    @exc.on_http_error(exc.GitlabGetError)
    def repository_compare(self, from_, to, **kwargs):
        """Return a diff between two branches/commits.

        Args:
            from_(str): Source branch/SHA
            to(str): Destination branch/SHA
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the server failed to perform the request

        Returns:
            str: The diff
        """
        path = '/projects/%s/repository/compare' % self.get_id()
        query_data = {'from': from_, 'to': to}
        return self.manager.gitlab.http_get(path, query_data=query_data,
                                            **kwargs)

    @cli.register_custom_action('Project')
    @exc.on_http_error(exc.GitlabGetError)
    def repository_contributors(self, **kwargs):
        """Return a list of contributors for the project.

        Args:
            all (bool): If True, return all the items, without pagination
            per_page (int): Number of items to retrieve per request
            page (int): ID of the page to return (starts with page 1)
            as_list (bool): If set to False and no pagination option is
                defined, return a generator instead of a list
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the server failed to perform the request

        Returns:
            list: The contributors
        """
        path = '/projects/%s/repository/contributors' % self.get_id()
        return self.manager.gitlab.http_list(path, **kwargs)

    @cli.register_custom_action('Project', tuple(), ('sha', ))
    @exc.on_http_error(exc.GitlabListError)
    def repository_archive(self, sha=None, streamed=False, action=None,
                           chunk_size=1024, **kwargs):
        """Return a tarball of the repository.

        Args:
            sha (str): ID of the commit (default branch by default)
            streamed (bool): If True the data will be processed by chunks of
                `chunk_size` and each chunk is passed to `action` for
                treatment
            action (callable): Callable responsible of dealing with chunk of
                data
            chunk_size (int): Size of each chunk
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabListError: If the server failed to perform the request

        Returns:
            str: The binary data of the archive
        """
        path = '/projects/%s/repository/archive' % self.get_id()
        query_data = {}
        if sha:
            query_data['sha'] = sha
        result = self.manager.gitlab.http_get(path, query_data=query_data,
                                              streamed=streamed, **kwargs)
        return utils.response_content(result, streamed, action, chunk_size)

    @cli.register_custom_action('Project', ('forked_from_id', ))
    @exc.on_http_error(exc.GitlabCreateError)
    def create_fork_relation(self, forked_from_id, **kwargs):
        """Create a forked from/to relation between existing projects.

        Args:
            forked_from_id (int): The ID of the project that was forked from
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the relation could not be created
        """
        path = '/projects/%s/fork/%s' % (self.get_id(), forked_from_id)
        self.manager.gitlab.http_post(path, **kwargs)

    @cli.register_custom_action('Project')
    @exc.on_http_error(exc.GitlabDeleteError)
    def delete_fork_relation(self, **kwargs):
        """Delete a forked relation between existing projects.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabDeleteError: If the server failed to perform the request
        """
        path = '/projects/%s/fork' % self.get_id()
        self.manager.gitlab.http_delete(path, **kwargs)

    @cli.register_custom_action('Project')
    @exc.on_http_error(exc.GitlabDeleteError)
    def delete_merged_branches(self, **kwargs):
        """Delete merged branches.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabDeleteError: If the server failed to perform the request
        """
        path = '/projects/%s/repository/merged_branches' % self.get_id()
        self.manager.gitlab.http_delete(path, **kwargs)

    @cli.register_custom_action('Project')
    @exc.on_http_error(exc.GitlabGetError)
    def languages(self, **kwargs):
        """Get languages used in the project with percentage value.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the server failed to perform the request
        """
        path = '/projects/%s/languages' % self.get_id()
        return self.manager.gitlab.http_get(path, **kwargs)

    @cli.register_custom_action('Project')
    @exc.on_http_error(exc.GitlabCreateError)
    def star(self, **kwargs):
        """Star a project.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the server failed to perform the request
        """
        path = '/projects/%s/star' % self.get_id()
        server_data = self.manager.gitlab.http_post(path, **kwargs)
        self._update_attrs(server_data)

    @cli.register_custom_action('Project')
    @exc.on_http_error(exc.GitlabDeleteError)
    def unstar(self, **kwargs):
        """Unstar a project.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabDeleteError: If the server failed to perform the request
        """
        path = '/projects/%s/unstar' % self.get_id()
        server_data = self.manager.gitlab.http_post(path, **kwargs)
        self._update_attrs(server_data)

    @cli.register_custom_action('Project')
    @exc.on_http_error(exc.GitlabCreateError)
    def archive(self, **kwargs):
        """Archive a project.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the server failed to perform the request
        """
        path = '/projects/%s/archive' % self.get_id()
        server_data = self.manager.gitlab.http_post(path, **kwargs)
        self._update_attrs(server_data)

    @cli.register_custom_action('Project')
    @exc.on_http_error(exc.GitlabDeleteError)
    def unarchive(self, **kwargs):
        """Unarchive a project.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabDeleteError: If the server failed to perform the request
        """
        path = '/projects/%s/unarchive' % self.get_id()
        server_data = self.manager.gitlab.http_post(path, **kwargs)
        self._update_attrs(server_data)

    @cli.register_custom_action('Project', ('group_id', 'group_access'),
                                ('expires_at', ))
    @exc.on_http_error(exc.GitlabCreateError)
    def share(self, group_id, group_access, expires_at=None, **kwargs):
        """Share the project with a group.

        Args:
            group_id (int): ID of the group.
            group_access (int): Access level for the group.
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the server failed to perform the request
        """
        path = '/projects/%s/share' % self.get_id()
        data = {'group_id': group_id,
                'group_access': group_access,
                'expires_at': expires_at}
        self.manager.gitlab.http_post(path, post_data=data, **kwargs)

    @cli.register_custom_action('Project', ('group_id', ))
    @exc.on_http_error(exc.GitlabDeleteError)
    def unshare(self, group_id, **kwargs):
        """Delete a shared project link within a group.

        Args:
            group_id (int): ID of the group.
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabDeleteError: If the server failed to perform the request
        """
        path = '/projects/%s/share/%s' % (self.get_id(), group_id)
        self.manager.gitlab.http_delete(path, **kwargs)

    # variables not supported in CLI
    @cli.register_custom_action('Project', ('ref', 'token'))
    @exc.on_http_error(exc.GitlabCreateError)
    def trigger_pipeline(self, ref, token, variables={}, **kwargs):
        """Trigger a CI build.

        See https://gitlab.com/help/ci/triggers/README.md#trigger-a-build

        Args:
            ref (str): Commit to build; can be a branch name or a tag
            token (str): The trigger token
            variables (dict): Variables passed to the build script
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the server failed to perform the request
        """
        path = '/projects/%s/trigger/pipeline' % self.get_id()
        post_data = {'ref': ref, 'token': token, 'variables': variables}
        attrs = self.manager.gitlab.http_post(
            path, post_data=post_data, **kwargs)
        return ProjectPipeline(self.pipelines, attrs)

    @cli.register_custom_action('Project')
    @exc.on_http_error(exc.GitlabHousekeepingError)
    def housekeeping(self, **kwargs):
        """Start the housekeeping task.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabHousekeepingError: If the server failed to perform the
                                     request
        """
        path = '/projects/%s/housekeeping' % self.get_id()
        self.manager.gitlab.http_post(path, **kwargs)

    # see #56 - add file attachment features
    @cli.register_custom_action('Project', ('filename', 'filepath'))
    @exc.on_http_error(exc.GitlabUploadError)
    def upload(self, filename, filedata=None, filepath=None, **kwargs):
        """Upload the specified file into the project.

        .. note::

            Either ``filedata`` or ``filepath`` *MUST* be specified.

        Args:
            filename (str): The name of the file being uploaded
            filedata (bytes): The raw data of the file being uploaded
            filepath (str): The path to a local file to upload (optional)

        Raises:
            GitlabConnectionError: If the server cannot be reached
            GitlabUploadError: If the file upload fails
            GitlabUploadError: If ``filedata`` and ``filepath`` are not
                specified
            GitlabUploadError: If both ``filedata`` and ``filepath`` are
                specified

        Returns:
            dict: A ``dict`` with the keys:
                * ``alt`` - The alternate text for the upload
                * ``url`` - The direct url to the uploaded file
                * ``markdown`` - Markdown for the uploaded file
        """
        if filepath is None and filedata is None:
            raise GitlabUploadError("No file contents or path specified")

        if filedata is not None and filepath is not None:
            raise GitlabUploadError("File contents and file path specified")

        if filepath is not None:
            with open(filepath, "rb") as f:
                filedata = f.read()

        url = ('/projects/%(id)s/uploads' % {
            'id': self.id,
        })
        file_info = {
            'file': (filename, filedata),
        }
        data = self.manager.gitlab.http_post(url, files=file_info)

        return {
            "alt": data['alt'],
            "url": data['url'],
            "markdown": data['markdown']
        }

    @cli.register_custom_action('Project', optional=('wiki',))
    @exc.on_http_error(exc.GitlabGetError)
    def snapshot(self, wiki=False, streamed=False, action=None,
                 chunk_size=1024, **kwargs):
        """Return a snapshot of the repository.

        Args:
            wiki (bool): If True return the wiki repository
            streamed (bool): If True the data will be processed by chunks of
                `chunk_size` and each chunk is passed to `action` for
                treatment.
            action (callable): Callable responsible of dealing with chunk of
                data
            chunk_size (int): Size of each chunk
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the content could not be retrieved

        Returns:
            str: The uncompressed tar archive of the repository
        """
        path = '/projects/%d/snapshot' % self.get_id()
        result = self.manager.gitlab.http_get(path, streamed=streamed,
                                              **kwargs)
        return utils.response_content(result, streamed, action, chunk_size)

    @cli.register_custom_action('Project', ('scope', 'search'))
    @exc.on_http_error(exc.GitlabSearchError)
    def search(self, scope, search, **kwargs):
        """Search the project resources matching the provided string.'

        Args:
            scope (str): Scope of the search
            search (str): Search string
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabSearchError: If the server failed to perform the request

        Returns:
            GitlabList: A list of dicts describing the resources found.
        """
        data = {'scope': scope, 'search': search}
        path = '/projects/%d/search' % self.get_id()
        return self.manager.gitlab.http_list(path, query_data=data, **kwargs)

    @cli.register_custom_action('Project')
    @exc.on_http_error(exc.GitlabCreateError)
    def mirror_pull(self, **kwargs):
        """Start the pull mirroring process for the project.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabCreateError: If the server failed to perform the request
        """
        path = '/projects/%d/mirror/pull' % self.get_id()
        self.manager.gitlab.http_post(path, **kwargs)

    @cli.register_custom_action('Project', ('to_namespace', ))
    @exc.on_http_error(exc.GitlabTransferProjectError)
    def transfer_project(self, to_namespace, **kwargs):
        """Transfer a project to the given namespace ID

        Args:
            to_namespace (str): ID or path of the namespace to transfer the
            project to
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabTransferProjectError: If the project could not be transfered
        """
        path = '/projects/%d/transfer' % (self.id,)
        self.manager.gitlab.http_put(path,
                                     post_data={"namespace": to_namespace},
                                     **kwargs)


class ProjectManager(CRUDMixin, RESTManager):
    _path = '/projects'
    _obj_cls = Project
    _create_attrs = (
        tuple(),
        ('name', 'path', 'namespace_id', 'description', 'issues_enabled',
         'merge_requests_enabled', 'jobs_enabled', 'wiki_enabled',
         'snippets_enabled', 'resolve_outdated_diff_discussions',
         'container_registry_enabled', 'shared_runners_enabled', 'visibility',
         'import_url', 'public_jobs', 'only_allow_merge_if_pipeline_succeeds',
         'only_allow_merge_if_all_discussions_are_resolved', 'merge_method',
         'lfs_enabled', 'request_access_enabled', 'tag_list', 'avatar',
         'printing_merge_request_link_enabled', 'ci_config_path')
    )
    _update_attrs = (
        tuple(),
        ('name', 'path', 'default_branch', 'description', 'issues_enabled',
         'merge_requests_enabled', 'jobs_enabled', 'wiki_enabled',
         'snippets_enabled', 'resolve_outdated_diff_discussions',
         'container_registry_enabled', 'shared_runners_enabled', 'visibility',
         'import_url', 'public_jobs', 'only_allow_merge_if_pipeline_succeeds',
         'only_allow_merge_if_all_discussions_are_resolved', 'merge_method',
         'lfs_enabled', 'request_access_enabled', 'tag_list', 'avatar',
         'ci_config_path')
    )
    _list_filters = ('search', 'owned', 'starred', 'archived', 'visibility',
                     'order_by', 'sort', 'simple', 'membership', 'statistics',
                     'with_issues_enabled', 'with_merge_requests_enabled',
                     'with_custom_attributes')

    def import_project(self, file, path, namespace=None, overwrite=False,
                       override_params=None, **kwargs):
        """Import a project from an archive file.

        Args:
            file: Data or file object containing the project
            path (str): Name and path for the new project
            namespace (str): The ID or path of the namespace that the project
                will be imported to
            overwrite (bool): If True overwrite an existing project with the
                same path
            override_params (dict): Set the specific settings for the project
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabListError: If the server failed to perform the request

        Returns:
            dict: A representation of the import status.
        """
        files = {
            'file': ('file.tar.gz', file)
        }
        data = {
            'path': path,
            'overwrite': overwrite
        }
        if override_params:
            for k, v in override_params.items():
                data['override_params[%s]' % k] = v
        if namespace:
            data['namespace'] = namespace
        return self.gitlab.http_post('/projects/import', post_data=data,
                                     files=files, **kwargs)


class RunnerJob(RESTObject):
    pass


class RunnerJobManager(ListMixin, RESTManager):
    _path = '/runners/%(runner_id)s/jobs'
    _obj_cls = RunnerJob
    _from_parent_attrs = {'runner_id': 'id'}
    _list_filters = ('status',)


class Runner(SaveMixin, ObjectDeleteMixin, RESTObject):
    _managers = (('jobs', 'RunnerJobManager'),)


class RunnerManager(CRUDMixin, RESTManager):
    _path = '/runners'
    _obj_cls = Runner
    _list_filters = ('scope', )
    _create_attrs = (('token',), ('description', 'info', 'active', 'locked',
                                  'run_untagged', 'tag_list',
                                  'maximum_timeout'))
    _update_attrs = (tuple(), ('description', 'active', 'tag_list',
                               'run_untagged', 'locked', 'access_level',
                               'maximum_timeout'))

    @cli.register_custom_action('RunnerManager', tuple(), ('scope', ))
    @exc.on_http_error(exc.GitlabListError)
    def all(self, scope=None, **kwargs):
        """List all the runners.

        Args:
            scope (str): The scope of runners to show, one of: specific,
                shared, active, paused, online
            all (bool): If True, return all the items, without pagination
            per_page (int): Number of items to retrieve per request
            page (int): ID of the page to return (starts with page 1)
            as_list (bool): If set to False and no pagination option is
                defined, return a generator instead of a list
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabListError: If the server failed to perform the request

        Returns:
            list(Runner): a list of runners matching the scope.
        """
        path = '/runners/all'
        query_data = {}
        if scope is not None:
            query_data['scope'] = scope
        return self.gitlab.http_list(path, query_data, **kwargs)

    @cli.register_custom_action('RunnerManager', ('token',))
    @exc.on_http_error(exc.GitlabVerifyError)
    def verify(self, token, **kwargs):
        """Validates authentication credentials for a registered Runner.

        Args:
            token (str): The runner's authentication token
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabVerifyError: If the server failed to verify the token
        """
        path = '/runners/verify'
        post_data = {'token': token}
        self.gitlab.http_post(path, post_data=post_data, **kwargs)


class Todo(ObjectDeleteMixin, RESTObject):
    @cli.register_custom_action('Todo')
    @exc.on_http_error(exc.GitlabTodoError)
    def mark_as_done(self, **kwargs):
        """Mark the todo as done.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabTodoError: If the server failed to perform the request
        """
        path = '%s/%s/mark_as_done' % (self.manager.path, self.id)
        server_data = self.manager.gitlab.http_post(path, **kwargs)
        self._update_attrs(server_data)


class TodoManager(ListMixin, DeleteMixin, RESTManager):
    _path = '/todos'
    _obj_cls = Todo
    _list_filters = ('action', 'author_id', 'project_id', 'state', 'type')

    @cli.register_custom_action('TodoManager')
    @exc.on_http_error(exc.GitlabTodoError)
    def mark_all_as_done(self, **kwargs):
        """Mark all the todos as done.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabTodoError: If the server failed to perform the request

        Returns:
            int: The number of todos maked done
        """
        result = self.gitlab.http_post('/todos/mark_as_done', **kwargs)
        try:
            return int(result)
        except ValueError:
            return 0


class GeoNode(SaveMixin, ObjectDeleteMixin, RESTObject):
    @cli.register_custom_action('GeoNode')
    @exc.on_http_error(exc.GitlabRepairError)
    def repair(self, **kwargs):
        """Repair the OAuth authentication of the geo node.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabRepairError: If the server failed to perform the request
        """
        path = '/geo_nodes/%s/repair' % self.get_id()
        server_data = self.manager.gitlab.http_post(path, **kwargs)
        self._update_attrs(server_data)

    @cli.register_custom_action('GeoNode')
    @exc.on_http_error(exc.GitlabGetError)
    def status(self, **kwargs):
        """Get the status of the geo node.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the server failed to perform the request

        Returns:
            dict: The status of the geo node
        """
        path = '/geo_nodes/%s/status' % self.get_id()
        return self.manager.gitlab.http_get(path, **kwargs)


class GeoNodeManager(RetrieveMixin, UpdateMixin, DeleteMixin, RESTManager):
    _path = '/geo_nodes'
    _obj_cls = GeoNode
    _update_attrs = (tuple(), ('enabled', 'url', 'files_max_capacity',
                               'repos_max_capacity'))

    @cli.register_custom_action('GeoNodeManager')
    @exc.on_http_error(exc.GitlabGetError)
    def status(self, **kwargs):
        """Get the status of all the geo nodes.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the server failed to perform the request

        Returns:
            list: The status of all the geo nodes
        """
        return self.gitlab.http_list('/geo_nodes/status', **kwargs)

    @cli.register_custom_action('GeoNodeManager')
    @exc.on_http_error(exc.GitlabGetError)
    def current_failures(self, **kwargs):
        """Get the list of failures on the current geo node.

        Args:
            **kwargs: Extra options to send to the server (e.g. sudo)

        Raises:
            GitlabAuthenticationError: If authentication is not correct
            GitlabGetError: If the server failed to perform the request

        Returns:
            list: The list of failures
        """
        return self.gitlab.http_list('/geo_nodes/current/failures', **kwargs)