graphene-django/graphene_django/management/commands/graphql_schema.py
Nikolai Røed Kristiansen 4517e32224
👷 Add pre-commit (#1336)
* 🔧 Add pre-commit config

Similar to graphene and graphene-sqlalchemy

* ⬆ Bump black

* 👷 Lint on CI

* ⬆ Bump flake8-black

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* ⬆ Bump flake8

* 🔧 Remove black and flake8 from tox config

* ⬆ Update pre-commit versions

* Upgrade syntax to python 3.7+

* Format with pre-commit

dedent docs/schema.py to allow formatting

* Fix tests on python 3.7
2022-10-19 17:10:30 +03:00

112 lines
3.5 KiB
Python

import os
import importlib
import json
import functools
from django.core.management.base import BaseCommand, CommandError
from django.utils import autoreload
from graphql import print_schema
from graphene_django.settings import graphene_settings
class CommandArguments(BaseCommand):
def add_arguments(self, parser):
parser.add_argument(
"--schema",
type=str,
dest="schema",
default=graphene_settings.SCHEMA,
help="Django app containing schema to dump, e.g. myproject.core.schema.schema",
)
parser.add_argument(
"--out",
type=str,
dest="out",
default=graphene_settings.SCHEMA_OUTPUT,
help="Output file, --out=- prints to stdout (default: schema.json)",
)
parser.add_argument(
"--indent",
type=int,
dest="indent",
default=graphene_settings.SCHEMA_INDENT,
help="Output file indent (default: None)",
)
parser.add_argument(
"--watch",
dest="watch",
default=False,
action="store_true",
help="Updates the schema on file changes (default: False)",
)
class Command(CommandArguments):
help = "Dump Graphene schema as a JSON or GraphQL file"
can_import_settings = True
requires_system_checks = []
def save_json_file(self, out, schema_dict, indent):
with open(out, "w") as outfile:
json.dump(schema_dict, outfile, indent=indent, sort_keys=True)
def save_graphql_file(self, out, schema):
with open(out, "w", encoding="utf-8") as outfile:
outfile.write(print_schema(schema.graphql_schema))
def get_schema(self, schema, out, indent):
schema_dict = {"data": schema.introspect()}
if out == "-" or out == "-.json":
self.stdout.write(json.dumps(schema_dict, indent=indent, sort_keys=True))
elif out == "-.graphql":
self.stdout.write(print_schema(schema))
else:
# Determine format
_, file_extension = os.path.splitext(out)
if file_extension == ".graphql":
self.save_graphql_file(out, schema)
elif file_extension == ".json":
self.save_json_file(out, schema_dict, indent)
else:
raise CommandError(f'Unrecognised file format "{file_extension}"')
style = getattr(self, "style", None)
success = getattr(style, "SUCCESS", lambda x: x)
self.stdout.write(success(f"Successfully dumped GraphQL schema to {out}"))
def handle(self, *args, **options):
options_schema = options.get("schema")
if options_schema and type(options_schema) is str:
module_str, schema_name = options_schema.rsplit(".", 1)
mod = importlib.import_module(module_str)
schema = getattr(mod, schema_name)
elif options_schema:
schema = options_schema
else:
schema = graphene_settings.SCHEMA
out = options.get("out") or graphene_settings.SCHEMA_OUTPUT
if not schema:
raise CommandError(
"Specify schema on GRAPHENE.SCHEMA setting or by using --schema"
)
indent = options.get("indent")
watch = options.get("watch")
if watch:
autoreload.run_with_reloader(
functools.partial(self.get_schema, schema, out, indent)
)
else:
self.get_schema(schema, out, indent)