openflexure-microscope-server/openflexure_microscope/common/flask_labthings/spec.py
2020-01-06 22:28:00 +00:00

141 lines
3.8 KiB
Python

from .resource import Resource
from apispec import APISpec
from apispec.ext.marshmallow import MarshmallowPlugin
from openflexure_microscope.common.labthings_core.utilities import (
get_docstring,
get_summary,
rupdate,
)
from .fields import Field
from marshmallow import Schema as BaseSchema
from collections import Mapping
from http import HTTPStatus
def update_spec(obj, spec):
obj.__apispec__ = obj.__dict__.get("__apispec__", {})
rupdate(obj.__apispec__, spec)
return obj.__apispec__
def view2path(rule: str, view: Resource, spec: APISpec):
params = {
"path": rule, # TODO: Validate this slightly (leading / etc)
"operations": view2operations(view, spec),
"description": get_docstring(view),
"summary": get_summary(view),
}
if hasattr(view, "__apispec__"):
# Recursively update params
rupdate(params, view.__apispec__)
return params
def view2operations(view: Resource, spec: APISpec):
ops = {}
for method in Resource.methods:
if hasattr(view, method):
ops[method] = {}
rupdate(
ops[method],
{
"description": get_docstring(getattr(view, method)),
"summary": get_summary(getattr(view, method)),
},
)
rupdate(ops[method], method2operation(getattr(view, method), spec))
return ops
def method2operation(method: callable, spec: APISpec):
if hasattr(method, "__apispec__"):
apispec = getattr(method, "__apispec__")
else:
apispec = {}
op = {}
if "_params" in apispec:
rupdate(
op,
{
"requestBody": {
"content": {
"application/json": {
"schema": convert_schema(apispec.get("_params"), spec)
}
}
}
},
)
if "_schema" in apispec:
for code, schema in apispec.get("_schema", {}).items():
rupdate(
op,
{
"responses": {
code: {
"description": HTTPStatus(code).phrase,
"content": {
"application/json": {
"schema": convert_schema(schema, spec)
}
},
}
}
},
)
else:
# If no explicit responses are known, populate with defaults
rupdate(
op,
{
"responses": {
200: {"description": get_summary(method) or HTTPStatus(200).phrase}
}
},
)
# Bung in any extra swagger fields supplied
for key, val in apispec.items():
if not key in ["_params", "_schema"]:
rupdate(op, {key: val})
return op
def convert_schema(schema, spec: APISpec):
if isinstance(schema, BaseSchema):
return schema
elif isinstance(schema, Mapping):
return map2properties(schema, spec)
else:
raise TypeError(
"Unsupported schema type. Ensure schema is a Schema class, or dictionary of Field objects"
)
def map2properties(schema, spec: APISpec):
marshmallow_plugin = next(
plugin for plugin in spec.plugins if isinstance(plugin, MarshmallowPlugin)
)
converter = marshmallow_plugin.converter
d = {}
for k, v in schema.items():
if isinstance(v, Field):
d[k] = converter.field2property(v)
elif isinstance(v, Mapping):
d[k] = map2properties(v, spec)
else:
d[k] = v
return {"properties": d}