graphene-django/graphene_django/management/commands/graphql_schema.py
2017-12-18 12:02:04 -05:00

69 lines
2.1 KiB
Python

import importlib
import json
from django.core.management.base import BaseCommand, CommandError
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 (default: schema.json)')
parser.add_argument(
'--indent',
type=int,
dest='indent',
default=graphene_settings.SCHEMA_INDENT,
help='Output file indent (default: None)')
class Command(CommandArguments):
help = 'Dump Graphene schema JSON to file'
can_import_settings = True
def save_file(self, out, schema_dict, indent):
with open(out, 'w') as outfile:
json.dump(schema_dict, outfile, indent=indent)
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')
schema_dict = {'data': schema.introspect()}
self.save_file(out, schema_dict, indent)
style = getattr(self, 'style', None)
success = getattr(style, 'SUCCESS', lambda x: x)
self.stdout.write(success('Successfully dumped GraphQL schema to %s' % out))