diff options
Diffstat (limited to 'src/services/api/graphql/generate/schema_from_composite.py')
-rwxr-xr-x | src/services/api/graphql/generate/schema_from_composite.py | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/src/services/api/graphql/generate/schema_from_composite.py b/src/services/api/graphql/generate/schema_from_composite.py new file mode 100755 index 000000000..7187047a0 --- /dev/null +++ b/src/services/api/graphql/generate/schema_from_composite.py @@ -0,0 +1,121 @@ +#!/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() |