magpie.api.management.resource.resource_utils

Functions

check_valid_service_or_resource_permission(...)	Checks if a permission is valid to be applied to a specific service or a resource under a root service.
check_valid_service_resource(→ magpie.models.Service)	Checks if a new Resource can be contained under a parent Resource given the requested type and the corresponding
check_unique_child_resource_name(→ None)	Verify that resource will be unique amongst other resources at the same target position.
crop_tree_with_permission(...)	Recursively prunes all children resources from the tree hierarchy except listed ones matched by ID.
get_resource_path(→ magpie.typedefs.Str)	Obtains the full path representation of the specified resource ID from the root service it resides under using all
get_service_or_resource_types(...)	Obtain the service or resource class and a corresponding "service" or "resource" type identifier.
get_resource_parents(...)	Obtains the parent resource nodes of the input service or resource.
get_resource_children(...)	Obtains the children resource node structure of the input service or resource.
get_resource_permissions(...)	Obtains the applicable permissions on the service or resource, accordingly to what was provided.
get_resource_root_service(...)	Retrieves the service-specialized resource corresponding to the top-level resource in the tree hierarchy.
get_resource_root_service_by_id(...)	Retrieves the service-specialized resource corresponding to the top-level resource in the tree hierarchy.
get_resource_root_service_impl(...)	Obtain the root service implementation.
create_resource(→ pyramid.httpexceptions.HTTPException)
delete_resource(request)

Module Contents

magpie.api.management.resource.resource_utils.check_valid_service_or_resource_permission(permission_name: magpie.typedefs.Str | magpie.permissions.Permission, service_or_resource: magpie.typedefs.ServiceOrResourceType, db_session: sqlalchemy.orm.session.Session) → magpie.permissions.Permission | None

Checks if a permission is valid to be applied to a specific service or a resource under a root service.

Parameters:

• permission_name – permission name to be validated

• service_or_resource – resource item corresponding to either a Service or a Resource

• db_session – db connection

Returns:

valid Permission if allowed by the service/resource

Raises:

HTTPBadRequest – if the permission is not valid for the targeted service/resource

magpie.api.management.resource.resource_utils.check_valid_service_resource(parent_resource: magpie.typedefs.ServiceOrResourceType, resource_type: magpie.typedefs.Str, db_session: sqlalchemy.orm.session.Session) → magpie.models.Service

Checks if a new Resource can be contained under a parent Resource given the requested type and the corresponding Service under which the parent Resource is already assigned.

Parameters:

• parent_resource – Resource under which the new resource of resource_type must be placed

• resource_type – desired resource type

• db_session

Returns:

root Service if all checks were successful

magpie.api.management.resource.resource_utils.check_unique_child_resource_name(resource_name: magpie.typedefs.Str, parent_id: int, error_message: magpie.typedefs.Str, db_session: sqlalchemy.orm.session.Session) → None

Verify that resource will be unique amongst other resources at the same target position.

Verifies that the provided resource_name does not already exist amongst other children resources at the level immediately under the parent, for the specified parent resource.

Returns:

nothing if no conflict detected

Raises:

HTTPConflict – if the resource_name conflict with another existing resource

magpie.api.management.resource.resource_utils.crop_tree_with_permission(children: magpie.typedefs.NestedResourceNodes, resource_id_list: List[int]) → Tuple[magpie.typedefs.NestedResourceNodes, List[int]]

Recursively prunes all children resources from the tree hierarchy except listed ones matched by ID.

Input children is expected to be a dictionary of resource nodes and children resources with their ID as keys:

{
    <res-id>: {
        "node": <res>,
        "children": {
            <res-id>: {
                "node": <res>,
                "children": { <...> }
            },
            <...>
    },
    <...>
}

Parameters:

• children – full hierarchy of children resource nodes.

• resource_id_list – resource IDs of nodes to preserve.

Returns:

pruned hierarchy of resource nodes.

magpie.api.management.resource.resource_utils.get_resource_path(resource_id: int, db_session: sqlalchemy.orm.session.Session) → magpie.typedefs.Str

Obtains the full path representation of the specified resource ID from the root service it resides under using all respective names of the intermediate resources.

For example, the following hierarchy:

<service-1> (id: 1)
    <resource-1> (id: 2)
        <resource-2> (id: 3)

Will return the following path: /service-1/resource-1/resource-2.

This is the same representation of the resource field within startup permissions configuration file.

magpie.api.management.resource.resource_utils.get_service_or_resource_types(service_or_resource: magpie.typedefs.ServiceOrResourceType) → Tuple[Type[magpie.services.ServiceInterface], magpie.typedefs.Str]

Obtain the service or resource class and a corresponding "service" or "resource" type identifier.

magpie.api.management.resource.resource_utils.get_resource_parents(resource: magpie.typedefs.ServiceOrResourceType, db_session: sqlalchemy.orm.session.Session, tree_service_builder: ziggurat_foundations.models.services.resource_tree.ResourceTreeService | None = None) → List[magpie.typedefs.ServiceOrResourceType]

Obtains the parent resource nodes of the input service or resource.

Parameters:

• resource – Initial resource where to start building the list from.

• db_session – Database connection to retrieve resources.

• tree_service_builder – Utility that build the tree (default: models.RESOURCE_TREE_SERVICE).

Returns:

List of resources starting at input resource going all the way down to the root service.

magpie.api.management.resource.resource_utils.get_resource_children(resource: magpie.typedefs.ServiceOrResourceType, db_session: sqlalchemy.orm.session.Session, tree_service_builder: ziggurat_foundations.models.services.resource_tree.ResourceTreeService | None = None, limit_depth: int | None = None) → magpie.typedefs.NestedResourceNodes

Obtains the children resource node structure of the input service or resource.

Parameters:

• resource – Initial resource where to start building the tree from.

• db_session – Database connection to retrieve resources.

• tree_service_builder – Utility that build the tree (default: models.RESOURCE_TREE_SERVICE).

• limit_depth – Maximum depth to look for children resources (very deep if not specified, could be slow).

Returns:

{node: Resource, children: {node_id: <recursive>}}

magpie.api.management.resource.resource_utils.get_resource_permissions(resource: magpie.typedefs.ServiceOrResourceType, db_session: sqlalchemy.orm.session.Session) → List[magpie.permissions.Permission]

Obtains the applicable permissions on the service or resource, accordingly to what was provided.

When parsing a resource, rewinds the hierarchy up to the top-most service in order to find the context under which the resource resides, and therefore which permissions this resource is allowed to have under that service.

magpie.api.management.resource.resource_utils.get_resource_root_service(resource: magpie.typedefs.ServiceOrResourceType, db_session: sqlalchemy.orm.session.Session) → magpie.models.Service | None

Retrieves the service-specialized resource corresponding to the top-level resource in the tree hierarchy.

See also

• get_resource_root_service_by_id() for same operation but using the resource ID

• get_resource_root_service_impl() to retrieve the explicit service’s implementation

magpie.api.management.resource.resource_utils.get_resource_root_service_by_id(resource_id: magpie.typedefs.ServiceOrResourceType, db_session: sqlalchemy.orm.session.Session) → magpie.models.Service | None

Retrieves the service-specialized resource corresponding to the top-level resource in the tree hierarchy.

See also

• get_resource_root_service() for same operation but directly using the resource

magpie.api.management.resource.resource_utils.get_resource_root_service_impl(resource: magpie.typedefs.ServiceOrResourceType, request: pyramid.request.Request) → magpie.services.ServiceInterface

Obtain the root service implementation.

Retrieves the root-resource from the provided resource within a tree hierarchy and generates the corresponding top-level service’s implementation from the service_factory().

See also

get_resource_root_service() to retrieve only the service flavored resource model

magpie.api.management.resource.resource_utils.create_resource(resource_name: magpie.typedefs.Str, resource_display_name: magpie.typedefs.Str | None, resource_type: magpie.typedefs.Str, parent_id: int, db_session: sqlalchemy.orm.session.Session) → pyramid.httpexceptions.HTTPException

magpie.api.management.resource.resource_utils.delete_resource(request)