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#!/usr/bin/env python3
#
# Copyright (C) 2022 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
#
# A utility to generate GraphQL schema defintions from typing information of
# composite functions comprising several requests.
import os
import sys
import json
from inspect import signature, getmembers, isfunction, isclass, getmro
from jinja2 import Template
from vyos.defaults import directories
if __package__ is None or __package__ == '':
sys.path.append("/usr/libexec/vyos/services/api")
from graphql.libs.op_mode import snake_to_pascal_case, map_type_name
from composite_function import queries, mutations
else:
from .. libs.op_mode import snake_to_pascal_case, map_type_name
from . composite_function import queries, mutations
SCHEMA_PATH = directories['api_schema']
schema_data: dict = {'schema_name': '',
'schema_fields': []}
query_template = """
input {{ schema_name }}Input {
key: String!
{%- for field_entry in schema_fields %}
{{ field_entry }}
{%- endfor %}
}
type {{ schema_name }} {
result: Generic
}
type {{ schema_name }}Result {
data: {{ schema_name }}
success: Boolean!
errors: [String]
}
extend type Query {
{{ schema_name }}(data: {{ schema_name }}Input) : {{ schema_name }}Result @compositequery
}
"""
mutation_template = """
input {{ schema_name }}Input {
key: String!
{%- for field_entry in schema_fields %}
{{ field_entry }}
{%- endfor %}
}
type {{ schema_name }} {
result: Generic
}
type {{ schema_name }}Result {
data: {{ schema_name }}
success: Boolean!
errors: [String]
}
extend type Mutation {
{{ schema_name }}(data: {{ schema_name }}Input) : {{ schema_name }}Result @compositemutation
}
"""
def create_schema(func_name: str, func: callable, template: str) -> str:
sig = signature(func)
field_dict = {}
for k in sig.parameters:
field_dict[sig.parameters[k].name] = map_type_name(sig.parameters[k].annotation)
schema_fields = []
for k,v in field_dict.items():
schema_fields.append(k+': '+v)
schema_data['schema_name'] = snake_to_pascal_case(func_name)
schema_data['schema_fields'] = schema_fields
j2_template = Template(template)
res = j2_template.render(schema_data)
return res
def generate_composite_definitions():
results = []
for name,func in queries.items():
res = create_schema(name, func, query_template)
results.append(res)
for name,func in mutations.items():
res = create_schema(name, func, mutation_template)
results.append(res)
out = '\n'.join(results)
with open(f'{SCHEMA_PATH}/composite.graphql', 'w') as f:
f.write(out)
if __name__ == '__main__':
generate_composite_definitions()
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