summaryrefslogtreecommitdiff
path: root/src/services/api/graphql/session/session.py
blob: 23bc7154c16b6af2dfee28c0518be63e0c2564d4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
# Copyright 2021-2022 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 json

from ariadne import convert_camel_case_to_snake

from vyos.config import Config
from vyos.configtree import ConfigTree
from vyos.defaults import directories
from vyos.template import render

from api.graphql.utils.util import load_op_mode_as_module, split_compound_op_mode_name

op_mode_include_file = os.path.join(directories['data'], 'op-mode-standardized.json')

class Session:
    """
    Wrapper for calling configsession functions based on GraphQL requests.
    Non-nullable fields in the respective schema allow avoiding a key check
    in 'data'.
    """
    def __init__(self, session, data):
        self._session = session
        self._data = data
        self._name = convert_camel_case_to_snake(type(self).__name__)

        try:
            with open(op_mode_include_file) as f:
                self._op_mode_list = json.loads(f.read())
        except Exception:
            self._op_mode_list = None

    def configure(self):
        session = self._session
        data = self._data
        func_base_name = self._name

        tmpl_file = f'{func_base_name}.tmpl'
        cmd_file = f'/tmp/{func_base_name}.cmds'
        tmpl_dir = directories['api_templates']

        try:
            render(cmd_file, tmpl_file, data, location=tmpl_dir)
            commands = []
            with open(cmd_file) as f:
                lines = f.readlines()
            for line in lines:
                commands.append(line.split())
            for cmd in commands:
                if cmd[0] == 'set':
                    session.set(cmd[1:])
                elif cmd[0] == 'delete':
                    session.delete(cmd[1:])
                else:
                    raise ValueError('Operation must be "set" or "delete"')
            session.commit()
        except Exception as error:
            raise error

    def delete_path_if_childless(self, path):
        session = self._session
        config = Config(session.get_session_env())
        if not config.list_nodes(path):
            session.delete(path)
            session.commit()

    def show_config(self):
        session = self._session
        data = self._data
        out = ''

        try:
            out = session.show_config(data['path'])
            if data.get('config_format', '') == 'json':
                config_tree = vyos.configtree.ConfigTree(out)
                out = json.loads(config_tree.to_json())
        except Exception as error:
            raise error

        return out

    def save(self):
        session = self._session
        data = self._data
        if 'file_name' not in data or not data['file_name']:
            data['file_name'] = '/config/config.boot'

        try:
            session.save_config(data['file_name'])
        except Exception as error:
            raise error

    def load(self):
        session = self._session
        data = self._data

        try:
            session.load_config(data['file_name'])
            session.commit()
        except Exception as error:
            raise error

    def show(self):
        session = self._session
        data = self._data
        out = ''

        try:
            out = session.show(data['path'])
        except Exception as error:
            raise error

        return out

    def add(self):
        session = self._session
        data = self._data

        try:
            res = session.install_image(data['location'])
        except Exception as error:
            raise error

        return res

    def delete(self):
        session = self._session
        data = self._data

        try:
            res = session.remove_image(data['name'])
        except Exception as error:
            raise error

        return res

    def system_status(self):
        import api.graphql.session.composite.system_status as system_status

        session = self._session
        data = self._data

        status = {}
        status['host_name'] = session.show(['host', 'name']).strip()
        status['version'] = system_status.get_system_version()
        status['uptime'] = system_status.get_system_uptime()
        status['ram'] = system_status.get_system_ram_usage()

        return status

    def gen_op_query(self):
        session = self._session
        data = self._data
        name = self._name
        op_mode_list = self._op_mode_list

        # handle the case that the op-mode file contains underscores:
        if op_mode_list is None:
            raise FileNotFoundError(f"No op-mode file list at '{op_mode_include_file}'")
        (func_name, scriptname) = split_compound_op_mode_name(name, op_mode_list)
        if scriptname == '':
            raise FileNotFoundError(f"No op-mode file named in string '{name}'")

        mod = load_op_mode_as_module(f'{scriptname}')
        func = getattr(mod, func_name)
        if len(list(data)) > 0:
            res = func(True, **data)
        else:
            res = func(True)

        return res

    def gen_op_mutation(self):
        session = self._session
        data = self._data
        name = self._name
        op_mode_list = self._op_mode_list

        # handle the case that the op-mode file name contains underscores:
        if op_mode_list is None:
            raise FileNotFoundError(f"No op-mode file list at '{op_mode_include_file}'")
        (func_name, scriptname) = split_compound_op_mode_name(name, op_mode_list)
        if scriptname == '':
            raise FileNotFoundError(f"No op-mode file named in string '{name}'")

        mod = load_op_mode_as_module(f'{scriptname}')
        func = getattr(mod, func_name)
        if len(list(data)) > 0:
            res = func(**data)
        else:
            res = func()

        return res