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Source code for galaxy.managers.libraries
"""
Manager and Serializer for libraries.
"""
import logging
from sqlalchemy import false, not_, or_, true
from sqlalchemy.orm.exc import MultipleResultsFound
from sqlalchemy.orm.exc import NoResultFound
from galaxy import exceptions
from galaxy.managers import folders
from galaxy.util import pretty_print_time_interval
log = logging.getLogger(__name__)
# =============================================================================
[docs]class LibraryManager(object):
"""
Interface/service object for interacting with libraries.
"""
[docs] def get(self, trans, decoded_library_id, check_accessible=True):
"""
Get the library from the DB.
:param decoded_library_id: decoded library id
:type decoded_library_id: int
:param check_accessible: flag whether to check that user can access item
:type check_accessible: bool
:returns: the requested library
:rtype: galaxy.model.Library
"""
try:
library = trans.sa_session.query(trans.app.model.Library).filter(trans.app.model.Library.table.c.id == decoded_library_id).one()
except MultipleResultsFound:
raise exceptions.InconsistentDatabase('Multiple libraries found with the same id.')
except NoResultFound:
raise exceptions.RequestParameterInvalidException('No library found with the id provided.')
except Exception as e:
raise exceptions.InternalServerError('Error loading from the database.' + str(e))
library = self.secure(trans, library, check_accessible)
return library
[docs] def create(self, trans, name, description='', synopsis=''):
"""
Create a new library.
"""
if not trans.user_is_admin():
raise exceptions.ItemAccessibilityException('Only administrators can create libraries.')
else:
library = trans.app.model.Library(name=name, description=description, synopsis=synopsis)
root_folder = trans.app.model.LibraryFolder(name=name, description='')
library.root_folder = root_folder
trans.sa_session.add_all((library, root_folder))
trans.sa_session.flush()
return library
[docs] def update(self, trans, library, name=None, description=None, synopsis=None):
"""
Update the given library
"""
changed = False
if not trans.user_is_admin():
raise exceptions.ItemAccessibilityException('Only administrators can update libraries.')
if library.deleted:
raise exceptions.RequestParameterInvalidException('You cannot modify a deleted library. Undelete it first.')
if name is not None:
library.name = name
changed = True
# When library is renamed the root folder has to be renamed too.
folder_manager = folders.FolderManager()
folder_manager.update(trans, library.root_folder, name=name)
if description is not None:
library.description = description
changed = True
if synopsis is not None:
library.synopsis = synopsis
changed = True
if changed:
trans.sa_session.add(library)
trans.sa_session.flush()
return library
[docs] def delete(self, trans, library, undelete=False):
"""
Mark given library deleted/undeleted based on the flag.
"""
if not trans.user_is_admin():
raise exceptions.ItemAccessibilityException('Only administrators can delete and undelete libraries.')
if undelete:
library.deleted = False
else:
library.deleted = True
trans.sa_session.add(library)
trans.sa_session.flush()
return library
[docs] def list(self, trans, deleted=False):
"""
Return a list of libraries from the DB.
:param deleted: if True, show only ``deleted`` libraries, if False show only ``non-deleted``
:type deleted: boolean (optional)
:returns: query that will emit all accessible libraries
:rtype: sqlalchemy query
:returns: dict of 3 sets with available actions for user's accessible
libraries and a set of ids of all public libraries. These are
used for limiting the number of queries when dictifying the
libraries later on.
:rtype: dict
"""
is_admin = trans.user_is_admin()
query = trans.sa_session.query(trans.app.model.Library)
library_access_action = trans.app.security_agent.permitted_actions.LIBRARY_ACCESS.action
restricted_library_ids = {lp.library_id for lp in (
trans.sa_session.query(trans.model.LibraryPermissions).filter(
trans.model.LibraryPermissions.table.c.action == library_access_action
).distinct())}
prefetched_ids = {'restricted_library_ids': restricted_library_ids}
if is_admin:
if deleted is None:
# Flag is not specified, do not filter on it.
pass
elif deleted:
query = query.filter(trans.app.model.Library.table.c.deleted == true())
else:
query = query.filter(trans.app.model.Library.table.c.deleted == false())
else:
# Nonadmins can't see deleted libraries
query = query.filter(trans.app.model.Library.table.c.deleted == false())
current_user_role_ids = [role.id for role in trans.get_current_user_roles()]
all_actions = trans.sa_session.query(trans.model.LibraryPermissions).filter(trans.model.LibraryPermissions.table.c.role_id.in_(current_user_role_ids))
library_add_action = trans.app.security_agent.permitted_actions.LIBRARY_ADD.action
library_modify_action = trans.app.security_agent.permitted_actions.LIBRARY_MODIFY.action
library_manage_action = trans.app.security_agent.permitted_actions.LIBRARY_MANAGE.action
accessible_restricted_library_ids = []
allowed_library_add_ids = set([])
allowed_library_modify_ids = set([])
allowed_library_manage_ids = set([])
for action in all_actions:
if action.action == library_access_action:
accessible_restricted_library_ids.append(action.library_id)
if action.action == library_add_action:
allowed_library_add_ids.add(action.library_id)
if action.action == library_modify_action:
allowed_library_modify_ids.add(action.library_id)
if action.action == library_manage_action:
allowed_library_manage_ids.add(action.library_id)
query = query.filter(or_(
not_(trans.model.Library.table.c.id.in_(restricted_library_ids)),
trans.model.Library.table.c.id.in_(accessible_restricted_library_ids)
))
prefetched_ids['allowed_library_add_ids'] = allowed_library_add_ids
prefetched_ids['allowed_library_modify_ids'] = allowed_library_modify_ids
prefetched_ids['allowed_library_manage_ids'] = allowed_library_manage_ids
return query, prefetched_ids
[docs] def secure(self, trans, library, check_accessible=True):
"""
Check if library is accessible to user.
:param library: library
:type library: galaxy.model.Library
:param check_accessible: flag whether to check that user can access library
:type check_accessible: bool
:returns: the original library
:rtype: Library
"""
# all libraries are accessible to an admin
if trans.user_is_admin():
return library
if check_accessible:
library = self.check_accessible(trans, library)
return library
[docs] def check_accessible(self, trans, library):
"""
Check whether the library is accessible to current user.
"""
if not trans.app.security_agent.can_access_library(trans.get_current_user_roles(), library):
raise exceptions.ObjectNotFound('Library with the id provided was not found.')
elif library.deleted:
raise exceptions.ObjectNotFound('Library with the id provided is deleted.')
else:
return library
[docs] def get_library_dict(self, trans, library, prefetched_ids=None):
"""
Return library data in the form of a dictionary.
:param library: library
:type library: galaxy.model.Library
:param prefetched_ids: dict of 3 sets with available actions for user's accessible
libraries and a set of ids of all public libraries. These are
used for limiting the number of queries when dictifying a
set of libraries.
:type prefetched_ids: dict
:returns: dict with data about the library
:rtype: dictionary
"""
restricted_library_ids = prefetched_ids.get('restricted_library_ids', None) if prefetched_ids else None
allowed_library_add_ids = prefetched_ids.get('allowed_library_add_ids', None) if prefetched_ids else None
allowed_library_modify_ids = prefetched_ids.get('allowed_library_modify_ids', None) if prefetched_ids else None
allowed_library_manage_ids = prefetched_ids.get('allowed_library_manage_ids', None) if prefetched_ids else None
library_dict = library.to_dict(view='element', value_mapper={'id': trans.security.encode_id, 'root_folder_id': trans.security.encode_id})
library_dict['public'] = False if (restricted_library_ids and library.id in restricted_library_ids) else True
library_dict['create_time_pretty'] = pretty_print_time_interval(library.create_time, precise=True)
if not trans.user_is_admin():
if prefetched_ids:
library_dict['can_user_add'] = True if (allowed_library_add_ids and library.id in allowed_library_add_ids) else False
library_dict['can_user_modify'] = True if (allowed_library_modify_ids and library.id in allowed_library_modify_ids) else False
library_dict['can_user_manage'] = True if (allowed_library_manage_ids and library.id in allowed_library_manage_ids) else False
else:
current_user_roles = trans.get_current_user_roles()
library_dict['can_user_add'] = trans.app.security_agent.can_add_library_item(current_user_roles, library)
library_dict['can_user_modify'] = trans.app.security_agent.can_modify_library_item(current_user_roles, library)
library_dict['can_user_manage'] = trans.app.security_agent.can_manage_library_item(current_user_roles, library)
else:
library_dict['can_user_add'] = True
library_dict['can_user_modify'] = True
library_dict['can_user_manage'] = True
return library_dict
[docs] def get_current_roles(self, trans, library):
"""
Load all permissions currently related to the given library.
:param library: the model object
:type library: galaxy.model.Library
:rtype: dictionary
:returns: dict of current roles for all available permission types
"""
access_library_role_list = [(access_role.name, trans.security.encode_id(access_role.id)) for access_role in self.get_access_roles(trans, library)]
modify_library_role_list = [(modify_role.name, trans.security.encode_id(modify_role.id)) for modify_role in self.get_modify_roles(trans, library)]
manage_library_role_list = [(manage_role.name, trans.security.encode_id(manage_role.id)) for manage_role in self.get_manage_roles(trans, library)]
add_library_item_role_list = [(add_role.name, trans.security.encode_id(add_role.id)) for add_role in self.get_add_roles(trans, library)]
return dict(access_library_role_list=access_library_role_list,
modify_library_role_list=modify_library_role_list,
manage_library_role_list=manage_library_role_list,
add_library_item_role_list=add_library_item_role_list)
[docs] def get_access_roles(self, trans, library):
"""
Load access roles for all library permissions
"""
return set(library.get_access_roles(trans))
[docs] def get_modify_roles(self, trans, library):
"""
Load modify roles for all library permissions
"""
return set(trans.app.security_agent.get_roles_for_action(library, trans.app.security_agent.permitted_actions.LIBRARY_MODIFY))
[docs] def get_manage_roles(self, trans, library):
"""
Load manage roles for all library permissions
"""
return set(trans.app.security_agent.get_roles_for_action(library, trans.app.security_agent.permitted_actions.LIBRARY_MANAGE))
[docs] def get_add_roles(self, trans, library):
"""
Load add roles for all library permissions
"""
return set(trans.app.security_agent.get_roles_for_action(library, trans.app.security_agent.permitted_actions.LIBRARY_ADD))
[docs] def set_permission_roles(self, trans, library, access_roles, modify_roles, manage_roles, add_roles):
"""
Set permissions on the given library.
"""
[docs] def make_public(self, trans, library):
"""
Makes the given library public (removes all access roles)
"""
trans.app.security_agent.make_library_public(library)
return self.is_public(trans, library)
[docs] def is_public(self, trans, library):
"""
Return true if lib is public.
"""
return trans.app.security_agent.library_is_public(library)