diff options
| -rw-r--r-- | data/op-mode-standardized.json | 7 | ||||
| -rwxr-xr-x | src/services/api/graphql/utils/schema_from_op_mode.py | 161 | ||||
| -rw-r--r-- | src/services/api/graphql/utils/util.py | 41 |
3 files changed, 209 insertions, 0 deletions
diff --git a/data/op-mode-standardized.json b/data/op-mode-standardized.json new file mode 100644 index 000000000..4dccbba7f --- /dev/null +++ b/data/op-mode-standardized.json @@ -0,0 +1,7 @@ +[ +"cpu.py", +"memory.py", +"neighbor.py", +"route.py", +"version.py" +] diff --git a/src/services/api/graphql/utils/schema_from_op_mode.py b/src/services/api/graphql/utils/schema_from_op_mode.py new file mode 100755 index 000000000..cdde5f187 --- /dev/null +++ b/src/services/api/graphql/utils/schema_from_op_mode.py @@ -0,0 +1,161 @@ +#!/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 standardized op-mode +# scripts. + +import os +import json +import typing +from inspect import signature, getmembers, isfunction +from jinja2 import Template + +from vyos.defaults import directories +from . util import load_as_module, is_op_mode_function_name, is_show_function_name + +OP_MODE_PATH = directories['op_mode'] +SCHEMA_PATH = directories['api_schema'] +DATA_DIR = directories['data'] + +op_mode_include_file = os.path.join(DATA_DIR, 'op-mode-standardized.json') + +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 @genopquery +} +""" + +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 @genopmutation +} +""" + +def _snake_to_pascal_case(name: str) -> str: + res = ''.join(map(str.title, name.split('_'))) + return res + +def _map_type_name(type_name: type, optional: bool = False) -> str: + if type_name == str: + return 'String!' if not optional else 'String = null' + if type_name == int: + return 'Int!' if not optional else 'Int = null' + if type_name == bool: + return 'Boolean!' if not optional else 'Boolean = false' + if typing.get_origin(type_name) == list: + if not optional: + return f'[{_map_type_name(typing.get_args(type_name)[0])}]!' + return f'[{_map_type_name(typing.get_args(type_name)[0])}]' + # typing.Optional is typing.Union[_, NoneType] + if (typing.get_origin(type_name) is typing.Union and + typing.get_args(type_name)[1] == type(None)): + return f'{_map_type_name(typing.get_args(type_name)[0], optional=True)}' + + # scalar 'Generic' is defined in schema.graphql + return 'Generic' + +def create_schema(func_name: str, base_name: str, func: callable) -> str: + sig = signature(func) + + field_dict = {} + for k in sig.parameters: + field_dict[sig.parameters[k].name] = _map_type_name(sig.parameters[k].annotation) + + # It is assumed that if one is generating a schema for a 'show_*' + # function, that 'get_raw_data' is present and 'raw' is desired. + if 'raw' in list(field_dict): + del field_dict['raw'] + + schema_fields = [] + for k,v in field_dict.items(): + schema_fields.append(k+': '+v) + + schema_data['schema_name'] = _snake_to_pascal_case(func_name + '_' + base_name) + schema_data['schema_fields'] = schema_fields + + if is_show_function_name(func_name): + j2_template = Template(query_template) + else: + j2_template = Template(mutation_template) + + res = j2_template.render(schema_data) + + return res + +def generate_op_mode_definitions(): + with open(op_mode_include_file) as f: + op_mode_files = json.load(f) + + for file in op_mode_files: + basename = os.path.splitext(file)[0] + module = load_as_module(basename, os.path.join(OP_MODE_PATH, file)) + + funcs = getmembers(module, isfunction) + funcs = list(filter(lambda ft: is_op_mode_function_name(ft[0]), funcs)) + + funcs_dict = {} + for (name, thunk) in funcs: + funcs_dict[name] = thunk + + results = [] + for name,func in funcs_dict.items(): + res = create_schema(name, basename, func) + results.append(res) + + out = '\n'.join(results) + with open(f'{SCHEMA_PATH}/{basename}.graphql', 'w') as f: + f.write(out) + +if __name__ == '__main__': + generate_op_mode_definitions() diff --git a/src/services/api/graphql/utils/util.py b/src/services/api/graphql/utils/util.py new file mode 100644 index 000000000..bf30f673a --- /dev/null +++ b/src/services/api/graphql/utils/util.py @@ -0,0 +1,41 @@ +# Copyright 2022 VyOS maintainers and contributors <maintainers@vyos.io> +# +# This library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; either +# version 2.1 of the License, or (at your option) any later version. +# +# This library 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 +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with this library. If not, see <http://www.gnu.org/licenses/>. + +import os +import re +import importlib.util + +from vyos.defaults import directories + +def load_as_module(name: str, path: str): + spec = importlib.util.spec_from_file_location(name, path) + mod = importlib.util.module_from_spec(spec) + spec.loader.exec_module(mod) + return mod + +def load_op_mode_as_module(name: str): + path = os.path.join(directories['op_mode'], name) + name = os.path.splitext(name)[0] + return load_as_module(name, path) + +def is_op_mode_function_name(name): + if re.match(r"^(show|clear|reset|restart)", name): + return True + return False + +def is_show_function_name(name): + if re.match(r"^show", name): + return True + return False |