1 files changed, 165 insertions, 0 deletions
diff --git a/src/services/api/graphql/generate/schema_from_config_session.py b/src/services/api/graphql/generate/schema_from_config_session.py
new file mode 100755
index 000000000..49bf2440e
--- /dev/null
+++ b/src/services/api/graphql/generate/schema_from_config_session.py
@@ -0,0 +1,165 @@
+#!/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
+# (wrappers of) native configsession functions.
+
+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 config_session_function import queries, mutations
+    from vyos.config import Config
+    from vyos.configdict import dict_merge
+    from vyos.xml import defaults
+else:
+    from .. libs.op_mode import snake_to_pascal_case, map_type_name
+    from . config_session_function import queries, mutations
+    from .. import state
+
+SCHEMA_PATH = directories['api_schema']
+
+if __package__ is None or __package__ == '':
+    # allow running stand-alone
+    conf = Config()
+    base = ['service', 'https', 'api']
+    graphql_dict = conf.get_config_dict(base, key_mangling=('-', '_'),
+                                          no_tag_node_value_mangle=True,
+                                          get_first_key=True)
+    if 'graphql' not in graphql_dict:
+        exit("graphql is not configured")
+
+    graphql_dict = dict_merge(defaults(base), graphql_dict)
+    auth_type = graphql_dict['graphql']['authentication']['type']
+else:
+    auth_type = state.settings['app'].state.vyos_auth_type
+
+schema_data: dict = {'auth_type': auth_type,
+                     'schema_name': '',
+                     'schema_fields': []}
+
+query_template  = """
+{%- if auth_type == 'key' %}
+input {{ schema_name }}Input {
+    key: String!
+    {%- for field_entry in schema_fields %}
+    {{ field_entry }}
+    {%- endfor %}
+}
+{%- elif schema_fields %}
+input {{ schema_name }}Input {
+    {%- for field_entry in schema_fields %}
+    {{ field_entry }}
+    {%- endfor %}
+}
+{%- endif %}
+
+type {{ schema_name }} {
+    result: Generic
+}
+
+type {{ schema_name }}Result {
+    data: {{ schema_name }}
+    success: Boolean!
+    errors: [String]
+}
+
+extend type Query {
+{%- if auth_type == 'key' or schema_fields %}
+    {{ schema_name }}(data: {{ schema_name }}Input) : {{ schema_name }}Result @configsessionquery
+{%- else %}
+    {{ schema_name }} : {{ schema_name }}Result @configsessionquery
+{%- endif %}
+}
+"""
+
+mutation_template  = """
+{%- if auth_type == 'key' %}
+input {{ schema_name }}Input {
+    key: String!
+    {%- for field_entry in schema_fields %}
+    {{ field_entry }}
+    {%- endfor %}
+}
+{%- elif schema_fields %}
+input {{ schema_name }}Input {
+    {%- for field_entry in schema_fields %}
+    {{ field_entry }}
+    {%- endfor %}
+}
+{%- endif %}
+
+type {{ schema_name }} {
+    result: Generic
+}
+
+type {{ schema_name }}Result {
+    data: {{ schema_name }}
+    success: Boolean!
+    errors: [String]
+}
+
+extend type Mutation {
+{%- if auth_type == 'key' or schema_fields %}
+    {{ schema_name }}(data: {{ schema_name }}Input) : {{ schema_name }}Result @configsessionmutation
+{%- else %}
+    {{ schema_name }} : {{ schema_name }}Result @configsessionmutation
+{%- endif %}
+}
+"""
+
+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_config_session_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}/configsession.graphql', 'w') as f:
+        f.write(out)
+
+if __name__ == '__main__':
+    generate_config_session_definitions()