Mercurial > libervia-backend
annotate libervia/backend/plugins/plugin_misc_app_manager/__init__.py @ 4270:0d7bb4df2343
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| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Wed, 19 Jun 2024 18:44:57 +0200 |
| parents | 4aa62767f501 |
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| rev | line source |
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| 3372 | 1 #!/usr/bin/env python3 |
| 2 | |
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3 # Libervia plugin to manage external applications |
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4 # Copyright (C) 2009-2024 Jérôme Poisson (goffi@goffi.org) |
| 3372 | 5 |
| 6 # This program is free software: you can redistribute it and/or modify | |
| 7 # it under the terms of the GNU Affero General Public License as published by | |
| 8 # the Free Software Foundation, either version 3 of the License, or | |
| 9 # (at your option) any later version. | |
| 10 | |
| 11 # This program is distributed in the hope that it will be useful, | |
| 12 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 # GNU Affero General Public License for more details. | |
| 15 | |
| 16 # You should have received a copy of the GNU Affero General Public License | |
| 17 # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 18 | |
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19 from functools import partial, reduce |
| 3372 | 20 from pathlib import Path |
| 21 import secrets | |
| 22 import string | |
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23 import tempfile |
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24 import time |
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25 from typing import Any, Callable, List, Optional |
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26 from urllib.parse import urlparse, urlunparse |
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27 |
| 3372 | 28 import shortuuid |
| 29 from twisted.internet import defer | |
| 30 from twisted.python.procutils import which | |
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31 from yaml.constructor import ConstructorError |
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32 |
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33 from libervia.backend.core import exceptions |
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34 from libervia.backend.core.constants import Const as C |
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35 from libervia.backend.core.i18n import _ |
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36 from libervia.backend.core.log import getLogger |
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37 from libervia.backend.memory import persistent |
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38 from libervia.backend.plugins.plugin_misc_app_manager.models import AppManagerBackend |
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39 from libervia.backend.tools.common import data_format |
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40 from libervia.backend.tools.common import async_process |
| 3372 | 41 |
| 42 log = getLogger(__name__) | |
| 43 | |
| 44 try: | |
| 45 import yaml | |
| 46 except ImportError: | |
| 47 raise exceptions.MissingModule( | |
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48 "Missing module PyYAML, please download/install it. You can use " |
| 3372 | 49 '"pip install pyyaml"' |
| 50 ) | |
| 51 | |
| 52 try: | |
| 53 from yaml import CLoader as Loader, CDumper as Dumper | |
| 54 except ImportError: | |
| 55 log.warning( | |
| 56 "Can't use LibYAML binding (is libyaml installed?), pure Python version will be " | |
| 57 "used, but it is slower" | |
| 58 ) | |
| 59 from yaml import Loader, Dumper | |
| 60 | |
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61 |
| 3372 | 62 PLUGIN_INFO = { |
| 63 C.PI_NAME: "Applications Manager", | |
| 64 C.PI_IMPORT_NAME: "APP_MANAGER", | |
| 65 C.PI_TYPE: C.PLUG_TYPE_MISC, | |
| 66 C.PI_MODES: C.PLUG_MODE_BOTH, | |
| 67 C.PI_MAIN: "AppManager", | |
| 68 C.PI_HANDLER: "no", | |
| 69 C.PI_DESCRIPTION: _( | |
| 70 """Applications Manager | |
| 71 | |
| 72 Manage external applications using packagers, OS virtualization/containers or other | |
| 73 software management tools. | |
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74 """ |
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75 ), |
| 3372 | 76 } |
| 77 | |
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78 APP_FILE_PREFIX = "libervia_app_" |
| 3372 | 79 |
| 80 | |
| 81 class AppManager: | |
| 82 load = partial(yaml.load, Loader=Loader) | |
| 83 dump = partial(yaml.dump, Dumper=Dumper) | |
| 84 | |
| 85 def __init__(self, host): | |
| 86 log.info(_("plugin Applications Manager initialization")) | |
| 87 self.host = host | |
| 88 self._managers = {} | |
| 89 self._apps = {} | |
| 90 self._started = {} | |
| 91 # instance id to app data map | |
| 92 self._instances = {} | |
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93 |
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94 self.persistent_data = persistent.LazyPersistentBinaryDict("app_manager") |
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95 |
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96 host.bridge.add_method( |
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97 "applications_list", |
| 3372 | 98 ".plugin", |
| 99 in_sign="as", | |
| 100 out_sign="as", | |
| 101 method=self.list_applications, | |
| 102 ) | |
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103 host.bridge.add_method( |
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104 "application_start", |
| 3372 | 105 ".plugin", |
| 106 in_sign="ss", | |
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107 out_sign="s", |
| 3372 | 108 method=self._start, |
| 109 async_=True, | |
| 110 ) | |
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111 host.bridge.add_method( |
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112 "application_stop", |
| 3372 | 113 ".plugin", |
| 114 in_sign="sss", | |
| 115 out_sign="", | |
| 116 method=self._stop, | |
| 117 async_=True, | |
| 118 ) | |
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119 host.bridge.add_method( |
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120 "application_exposed_get", |
| 3372 | 121 ".plugin", |
| 122 in_sign="sss", | |
| 123 out_sign="s", | |
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124 method=self._get_exposed, |
| 3372 | 125 async_=True, |
| 126 ) | |
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127 # application has been started succeesfully, |
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128 # args: name, instance_id, extra |
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129 host.bridge.add_signal("application_started", ".plugin", signature="sss") |
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130 # application went wrong with the application |
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131 # args: name, instance_id, extra |
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132 host.bridge.add_signal("application_error", ".plugin", signature="sss") |
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133 yaml.add_constructor("!libervia_conf", self._libervia_conf_constr, Loader=Loader) |
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134 yaml.add_constructor( |
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135 "!libervia_generate_pwd", self._libervia_generate_pwd_constr, Loader=Loader |
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136 ) |
| 3372 | 137 yaml.add_constructor( |
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138 "!libervia_param", self._libervia_param_constr, Loader=Loader |
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139 ) |
| 3372 | 140 |
| 141 def unload(self): | |
| 142 log.debug("unloading applications manager") | |
| 143 for instances in self._started.values(): | |
| 144 for instance in instances: | |
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145 data = instance["data"] |
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146 if not data["single_instance"]: |
| 3372 | 147 log.debug( |
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148 f"cleaning temporary directory at {data['_instance_dir_path']}" |
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149 ) |
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150 data["_instance_dir_obj"].cleanup() |
| 3372 | 151 |
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152 def _libervia_conf_constr(self, loader, node) -> str: |
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153 """Get a value from Libervia configuration |
| 3372 | 154 |
| 155 A list is expected with either "name" of a config parameter, a one or more of | |
| 156 those parameters: | |
| 157 - section | |
| 158 - name | |
| 159 - default value | |
| 160 - filter | |
| 161 filter can be: | |
| 162 - "first": get the first item of the value | |
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163 - "not": get the opposite value (to be used with booleans) |
| 3372 | 164 """ |
| 165 config_data = loader.construct_sequence(node) | |
| 166 if len(config_data) == 1: | |
| 167 section, name, default, filter_ = "", config_data[0], None, None | |
| 168 if len(config_data) == 2: | |
| 169 (section, name), default, filter_ = config_data, None, None | |
| 170 elif len(config_data) == 3: | |
| 171 (section, name, default), filter_ = config_data, None | |
| 172 elif len(config_data) == 4: | |
| 173 section, name, default, filter_ = config_data | |
| 174 else: | |
| 175 raise ValueError( | |
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176 f"invalid !libervia_conf value ({config_data!r}), a list of 1 to 4 items " |
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177 "is expected" |
| 3372 | 178 ) |
| 179 | |
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180 value = self.host.memory.config_get(section, name, default) |
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181 # FIXME: "public_url" is used only here and doesn't take multi-sites into account |
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182 if name == "public_url" and (not value or value.startswith("http")): |
| 3372 | 183 if not value: |
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184 log.warning( |
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185 _( |
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186 'No value found for "public_url", using "example.org" for ' |
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187 "now, please set the proper value in libervia.conf" |
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188 ) |
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189 ) |
| 3372 | 190 else: |
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191 log.warning( |
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192 _( |
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193 'invalid value for "public_url" ({value}), it musts not start with ' |
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194 'schema ("http"), ignoring it and using "example.org" ' |
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195 "instead" |
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196 ).format(value=value) |
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197 ) |
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198 value = "example.org" |
| 3372 | 199 |
| 200 if filter_ is None: | |
| 201 pass | |
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202 elif filter_ == "first": |
| 3372 | 203 value = value[0] |
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204 elif filter_ == "not": |
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205 value = C.bool(value) |
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206 value = C.bool_const(not value).lower() |
| 3372 | 207 else: |
| 208 raise ValueError(f"unmanaged filter: {filter_}") | |
| 209 | |
| 210 return value | |
| 211 | |
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212 def _libervia_generate_pwd_constr(self, loader, node) -> str: |
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213 """Generate a password and store it in persistent data. |
| 3372 | 214 |
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215 If the password has already been generated previously, it is reused. |
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216 Mapping arguments are: |
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217 ``name`` (str) **required** |
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218 Name of the password. Will be used to store it. |
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219 ``size`` (int) |
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220 Size of the password to generate. Default to 30 |
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221 """ |
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222 try: |
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223 kwargs = loader.construct_mapping(node) |
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224 name = kwargs["name"] |
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225 except (ConstructorError, KeyError): |
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226 raise ValueError( |
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227 '!libervia_generate_pwd map arguments is missing. At least "name" ' |
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228 "must be specified." |
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229 ) |
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230 pwd_data_key = f"pwd_{name}" |
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231 try: |
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232 key = self._app_persistent_data[pwd_data_key] |
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233 except KeyError: |
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234 alphabet = string.ascii_letters + string.digits |
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235 key_size = int(kwargs.get("size", 30)) |
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236 key = "".join(secrets.choice(alphabet) for __ in range(key_size)) |
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237 self._app_persistent_data[pwd_data_key] = key |
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238 else: |
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239 log.debug(f"Re-using existing key for {name!r} password.") |
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240 return key |
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241 |
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242 def _libervia_param_constr(self, loader, node) -> str: |
| 3372 | 243 """Get a parameter specified when starting the application |
| 244 | |
| 245 The value can be either the name of the parameter to get, or a list as | |
| 246 [name, default_value] | |
| 247 """ | |
| 248 try: | |
| 249 name, default = loader.construct_sequence(node) | |
| 250 except ConstructorError: | |
| 251 name, default = loader.construct_scalar(node), None | |
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252 assert self._params is not None |
| 3372 | 253 return self._params.get(name, default) |
| 254 | |
| 255 def register(self, manager): | |
| 256 name = manager.name | |
| 257 if name in self._managers: | |
| 258 raise exceptions.ConflictError( | |
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259 f"There is already a manager with the name {name}" |
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260 ) |
| 3372 | 261 self._managers[manager.name] = manager |
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262 if manager.discover_path is not None: |
| 3372 | 263 self.discover(manager.discover_path, manager) |
| 264 | |
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265 def get_manager(self, app_data: dict) -> AppManagerBackend: |
| 3372 | 266 """Get manager instance needed for this app |
| 267 | |
| 268 @raise exceptions.DataError: something is wrong with the type | |
| 269 @raise exceptions.NotFound: manager is not registered | |
| 270 """ | |
| 271 try: | |
| 272 app_type = app_data["type"] | |
| 273 except KeyError: | |
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274 raise exceptions.DataError('app file doesn\'t have the mandatory "type" key') |
| 3372 | 275 if not isinstance(app_type, str): |
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276 raise exceptions.DataError(f"invalid app data type: {app_type!r}") |
| 3372 | 277 app_type = app_type.strip() |
| 278 try: | |
| 279 return self._managers[app_type] | |
| 280 except KeyError: | |
| 281 raise exceptions.NotFound( | |
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282 f"No manager found to manage app of type {app_type!r}" |
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283 ) |
| 3372 | 284 |
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285 def get_app_data(self, id_type: Optional[str], identifier: str) -> dict: |
| 3372 | 286 """Retrieve instance's app_data from identifier |
| 287 | |
| 288 @param id_type: type of the identifier, can be: | |
| 289 - "name": identifier is a canonical application name | |
| 290 the first found instance of this application is returned | |
| 291 - "instance": identifier is an instance id | |
| 292 @param identifier: identifier according to id_type | |
| 293 @return: instance application data | |
| 294 @raise exceptions.NotFound: no instance with this id can be found | |
| 295 @raise ValueError: id_type is invalid | |
| 296 """ | |
| 297 if not id_type: | |
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298 id_type = "name" |
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299 if id_type == "name": |
| 3372 | 300 identifier = identifier.lower().strip() |
| 301 try: | |
| 302 return next(iter(self._started[identifier])) | |
| 303 except (KeyError, StopIteration): | |
| 304 raise exceptions.NotFound( | |
| 305 f"No instance of {identifier!r} is currently running" | |
| 306 ) | |
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307 elif id_type == "instance": |
| 3372 | 308 instance_id = identifier |
| 309 try: | |
| 310 return self._instances[instance_id] | |
| 311 except KeyError: | |
| 312 raise exceptions.NotFound( | |
| 313 f"There is no application instance running with id {instance_id!r}" | |
| 314 ) | |
| 315 else: | |
| 316 raise ValueError(f"invalid id_type: {id_type!r}") | |
| 317 | |
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318 def discover(self, dir_path: Path, manager: AppManagerBackend | None = None) -> None: |
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319 """Search for app configuration file. |
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320 |
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321 App configuration files must start with [APP_FILE_PREFIX] and have a ``.yaml`` |
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322 extension. |
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323 """ |
| 3372 | 324 for file_path in dir_path.glob(f"{APP_FILE_PREFIX}*.yaml"): |
| 325 if manager is None: | |
| 326 try: | |
| 327 app_data = self.parse(file_path) | |
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328 manager = self.get_manager(app_data) |
| 3372 | 329 except (exceptions.DataError, exceptions.NotFound) as e: |
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330 log.warning(f"Can't parse {file_path}, skipping: {e}") |
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331 continue |
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332 app_name = file_path.stem[len(APP_FILE_PREFIX) :].strip().lower() |
| 3372 | 333 if not app_name: |
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334 log.warning(f"invalid app file name at {file_path}") |
| 3372 | 335 continue |
| 336 app_dict = self._apps.setdefault(app_name, {}) | |
| 337 manager_set = app_dict.setdefault(manager, set()) | |
| 338 manager_set.add(file_path) | |
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339 log.debug(f"{app_name!r} {manager.name} application found") |
| 3372 | 340 |
| 341 def parse(self, file_path: Path, params: Optional[dict] = None) -> dict: | |
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342 """Parse Libervia application file |
| 3372 | 343 |
| 344 @param params: parameters for running this instance | |
| 345 @raise exceptions.DataError: something is wrong in the file | |
| 346 """ | |
| 347 if params is None: | |
| 348 params = {} | |
| 349 with file_path.open() as f: | |
| 350 # we set parameters to be used only with this instance | |
| 351 # no async method must used between this assignation and `load` | |
| 352 self._params = params | |
| 353 app_data = self.load(f) | |
| 354 self._params = None | |
| 355 if "name" not in app_data: | |
| 356 # note that we don't use lower() here as we want human readable name and | |
| 357 # uppercase may be set on purpose | |
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358 app_data["name"] = file_path.stem[len(APP_FILE_PREFIX) :].strip() |
| 3372 | 359 single_instance = app_data.setdefault("single_instance", True) |
| 360 if not isinstance(single_instance, bool): | |
| 361 raise ValueError( | |
| 362 f'"single_instance" must be a boolean, but it is {type(single_instance)}' | |
| 363 ) | |
| 364 return app_data | |
| 365 | |
| 366 def list_applications(self, filters: Optional[List[str]]) -> List[str]: | |
| 367 """List available application | |
| 368 | |
| 369 @param filters: only show applications matching those filters. | |
| 370 using None will list all known applications | |
| 371 a filter can be: | |
| 372 - available: applications available locally | |
| 373 - running: only show launched applications | |
| 374 """ | |
| 375 if not filters: | |
| 376 return list(self.apps) | |
| 377 found = set() | |
| 378 for filter_ in filters: | |
| 379 if filter_ == "available": | |
| 380 found.update(self._apps) | |
| 381 elif filter_ == "running": | |
| 382 found.update(self._started) | |
| 383 else: | |
| 384 raise ValueError(f"Unknown filter: {filter_}") | |
| 385 return list(found) | |
| 386 | |
| 387 def _start(self, app_name, extra): | |
| 388 extra = data_format.deserialise(extra) | |
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389 d = defer.ensureDeferred(self.start(str(app_name), extra)) |
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390 d.addCallback(data_format.serialise) |
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391 return d |
| 3372 | 392 |
| 393 async def start( | |
| 394 self, | |
| 395 app_name: str, | |
| 396 extra: Optional[dict] = None, | |
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397 ) -> dict: |
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398 """Start an application |
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399 |
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400 @param app_name: name of the application to start |
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401 @param extra: extra parameters |
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402 @return: data with following keys: |
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403 - name (str): canonical application name |
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404 - instance (str): instance ID |
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405 - started (bool): True if the application is already started |
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406 if False, the "application_started" signal should be used to get notificed |
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407 when the application is actually started |
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408 - expose (dict): exposed data as given by [self.get_exposed] |
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409 exposed data which need to be computed are NOT returned, they will |
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410 available when the app will be fully started, throught the |
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411 [self.get_exposed] method. |
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412 """ |
| 3372 | 413 # FIXME: for now we use the first app manager available for the requested app_name |
| 414 # TODO: implement running multiple instance of the same app if some metadata | |
| 415 # to be defined in app_data allows explicitly it. | |
| 416 app_name = app_name.lower().strip() | |
| 417 try: | |
| 418 app_file_path = next(iter(next(iter(self._apps[app_name].values())))) | |
| 419 except KeyError: | |
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420 raise exceptions.NotFound(f"No application found with the name {app_name!r}") |
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421 log.info(f"starting {app_name!r}") |
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422 self._app_persistent_data = await self.persistent_data.get(app_name) or {} |
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423 self._app_persistent_data["last_started"] = time.time() |
| 3372 | 424 started_data = self._started.setdefault(app_name, []) |
| 425 app_data = self.parse(app_file_path, extra) | |
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426 await self.persistent_data.aset(app_name, self._app_persistent_data) |
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427 app_data["_started"] = False |
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428 app_data["_file_path"] = app_file_path |
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429 app_data["_name_canonical"] = app_name |
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430 single_instance = app_data["single_instance"] |
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431 ret_data = {"name": app_name, "started": False} |
| 3372 | 432 if single_instance: |
| 433 if started_data: | |
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434 instance_data = started_data[0] |
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435 instance_id = instance_data["_instance_id"] |
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436 ret_data["instance"] = instance_id |
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437 ret_data["started"] = instance_data["_started"] |
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438 ret_data["expose"] = await self.get_exposed( |
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439 instance_id, "instance", {"skip_compute": True} |
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440 ) |
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441 log.info(f"{app_name!r} is already started or being started") |
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442 return ret_data |
| 3372 | 443 else: |
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444 cache_path = self.host.memory.get_cache_path( |
| 3372 | 445 PLUGIN_INFO[C.PI_IMPORT_NAME], app_name |
| 446 ) | |
| 447 cache_path.mkdir(0o700, parents=True, exist_ok=True) | |
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448 app_data["_instance_dir_path"] = cache_path |
| 3372 | 449 else: |
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450 dest_dir_obj = tempfile.TemporaryDirectory(prefix="libervia_app_") |
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451 app_data["_instance_dir_obj"] = dest_dir_obj |
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452 app_data["_instance_dir_path"] = Path(dest_dir_obj.name) |
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453 instance_id = ret_data["instance"] = app_data["_instance_id"] = shortuuid.uuid() |
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454 manager = self.get_manager(app_data) |
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455 app_data["_manager"] = manager |
| 3372 | 456 started_data.append(app_data) |
| 457 self._instances[instance_id] = app_data | |
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458 # we retrieve exposed data such as url_prefix which can be useful computed exposed |
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459 # data must wait for the app to be started, so we skip them for now |
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460 ret_data["expose"] = await self.get_exposed( |
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461 instance_id, "instance", {"skip_compute": True} |
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462 ) |
| 3372 | 463 |
| 464 try: | |
| 465 start = manager.start | |
| 466 except AttributeError: | |
| 467 raise exceptions.InternalError( | |
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468 f'{manager.name} doesn\'t have the mandatory "start" method' |
| 3372 | 469 ) |
| 470 else: | |
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471 defer.ensureDeferred(self.start_app(start, app_data)) |
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472 return ret_data |
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473 |
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474 async def start_app(self, start_cb: Callable, app_data: dict) -> None: |
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475 app_name = app_data["_name_canonical"] |
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476 instance_id = app_data["_instance_id"] |
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477 try: |
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478 await start_cb(app_data) |
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479 except Exception as e: |
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480 log.exception(f"Can't start libervia app {app_name!r}") |
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481 self.host.bridge.application_error( |
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482 app_name, |
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483 instance_id, |
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484 data_format.serialise({"class": str(type(e)), "msg": str(e)}), |
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485 ) |
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486 else: |
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487 app_data["_started"] = True |
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488 self.host.bridge.application_started(app_name, instance_id, "") |
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489 log.info(f"{app_name!r} started") |
| 3372 | 490 |
| 491 def _stop(self, identifier, id_type, extra): | |
| 492 extra = data_format.deserialise(extra) | |
| 493 return defer.ensureDeferred( | |
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494 self.stop(str(identifier), str(id_type) or None, extra) |
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495 ) |
| 3372 | 496 |
| 497 async def stop( | |
| 498 self, | |
| 499 identifier: str, | |
| 500 id_type: Optional[str] = None, | |
| 501 extra: Optional[dict] = None, | |
| 502 ) -> None: | |
| 503 if extra is None: | |
| 504 extra = {} | |
| 505 | |
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506 app_data = self.get_app_data(id_type, identifier) |
| 3372 | 507 |
| 508 log.info(f"stopping {app_data['name']!r}") | |
| 509 | |
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510 app_name = app_data["_name_canonical"] |
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511 instance_id = app_data["_instance_id"] |
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512 manager = app_data["_manager"] |
| 3372 | 513 |
| 514 try: | |
| 515 stop = manager.stop | |
| 516 except AttributeError: | |
| 517 raise exceptions.InternalError( | |
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518 f'{manager.name} doesn\'t have the mandatory "stop" method' |
| 3372 | 519 ) |
| 520 else: | |
| 521 try: | |
| 522 await stop(app_data) | |
| 523 except Exception as e: | |
| 524 log.warning( | |
| 525 f"Instance {instance_id} of application {app_name} can't be stopped " | |
| 526 f"properly: {e}" | |
| 527 ) | |
| 528 return | |
| 529 | |
| 530 try: | |
| 531 del self._instances[instance_id] | |
| 532 except KeyError: | |
| 533 log.error( | |
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534 f"INTERNAL ERROR: {instance_id!r} is not present in self._instances" |
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535 ) |
| 3372 | 536 |
| 537 try: | |
| 538 self._started[app_name].remove(app_data) | |
| 539 except ValueError: | |
| 540 log.error( | |
| 541 "INTERNAL ERROR: there is no app data in self._started with id " | |
| 542 f"{instance_id!r}" | |
| 543 ) | |
| 544 | |
| 545 log.info(f"{app_name!r} stopped") | |
| 546 | |
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547 def _get_exposed(self, identifier, id_type, extra): |
| 3372 | 548 extra = data_format.deserialise(extra) |
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549 d = defer.ensureDeferred(self.get_exposed(identifier, id_type, extra)) |
| 3372 | 550 d.addCallback(lambda d: data_format.serialise(d)) |
| 551 return d | |
| 552 | |
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553 def get_app_data_value(self, path: list[str], data: dict[str, Any]) -> Any: |
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554 """Return a value from app data from its path. |
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555 |
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556 @param path: sequence of keys to get to retrieve the value |
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557 @return: requested value |
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558 @raise KeyError: Can't find the requested value. |
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559 """ |
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560 return reduce(lambda l, k: l[k], path, data) |
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561 |
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562 async def get_exposed( |
| 3372 | 563 self, |
| 564 identifier: str, | |
| 565 id_type: Optional[str] = None, | |
| 566 extra: Optional[dict] = None, | |
| 567 ) -> dict: | |
| 568 """Get data exposed by the application | |
| 569 | |
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570 The manager's "compute_expose" method will be called if it exists. It can be used |
| 3372 | 571 to handle manager specific conventions. |
| 572 """ | |
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573 app_data = self.get_app_data(id_type, identifier) |
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574 if app_data.get("_exposed_computed", False): |
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575 return app_data["expose"] |
| 3372 | 576 if extra is None: |
| 577 extra = {} | |
| 578 expose = app_data.setdefault("expose", {}) | |
| 579 if "passwords" in expose: | |
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580 passwords = expose["passwords"] |
| 3372 | 581 for name, value in list(passwords.items()): |
| 582 if isinstance(value, list): | |
| 583 # if we have a list, is the sequence of keys leading to the value | |
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584 # to expose. |
| 3372 | 585 try: |
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586 passwords[name] = self.get_app_data_value(value, app_data) |
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587 except KeyError: |
| 3372 | 588 log.warning( |
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589 f"Can't retrieve exposed value for password {name!r}: {e}" |
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590 ) |
| 3372 | 591 del passwords[name] |
| 592 | |
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593 for key in ("url_prefix", "front_url"): |
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594 value = expose.get(key) |
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595 if isinstance(value, list): |
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596 try: |
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597 expose[key] = self.get_app_data_value(value, app_data) |
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598 except KeyError: |
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599 log.warning(f"Can't retrieve exposed value for {key!r} at {value}") |
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600 del expose[key] |
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601 |
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602 front_url = expose.get("front_url") |
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603 if front_url: |
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604 # we want to be sure that a scheme is defined, defaulting to ``https`` |
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605 parsed_url = urlparse(front_url) |
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606 if not parsed_url.scheme: |
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607 if not parsed_url.netloc: |
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608 path_elt = parsed_url.path.split("/", 1) |
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609 parsed_url = parsed_url._replace( |
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610 netloc=path_elt[0], |
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611 path=f"/{path_elt[1]}" if len(path_elt) > 1 else "", |
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612 ) |
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613 parsed_url = parsed_url._replace(scheme="https") |
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614 expose["front_url"] = urlunparse(parsed_url) |
| 3372 | 615 |
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616 if extra.get("skip_compute", False): |
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617 return expose |
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618 |
| 3372 | 619 try: |
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620 compute_expose = app_data["_manager"].compute_expose |
| 3372 | 621 except AttributeError: |
| 622 pass | |
| 623 else: | |
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624 await compute_expose(app_data) |
| 3372 | 625 |
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626 app_data["_exposed_computed"] = True |
| 3372 | 627 return expose |
| 628 | |
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629 async def _do_prepare( |
| 3372 | 630 self, |
| 631 app_data: dict, | |
| 632 ) -> None: | |
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633 name = app_data["name"] |
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634 dest_path = app_data["_instance_dir_path"] |
| 3372 | 635 if next(dest_path.iterdir(), None) != None: |
| 636 log.debug(f"There is already a prepared dir at {dest_path}, nothing to do") | |
| 637 return | |
| 638 try: | |
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639 prepare = app_data["prepare"].copy() |
| 3372 | 640 except KeyError: |
| 641 prepare = {} | |
| 642 | |
| 643 if not prepare: | |
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644 log.debug(f"Nothing to prepare for {name!r}") |
| 3372 | 645 return |
| 646 | |
| 647 for action, value in list(prepare.items()): | |
| 648 log.debug(f"[{name}] [prepare] running {action!r} action") | |
| 649 if action == "git": | |
| 650 try: | |
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651 git_path = which("git")[0] |
| 3372 | 652 except IndexError: |
| 653 raise exceptions.NotFound( | |
| 654 "Can't find \"git\" executable, {name} can't be started without it" | |
| 655 ) | |
| 656 await async_process.run(git_path, "clone", value, str(dest_path)) | |
| 657 log.debug(f"{value!r} git repository cloned at {dest_path}") | |
| 658 else: | |
| 659 raise NotImplementedError( | |
| 660 f"{action!r} is not managed, can't start {name}" | |
| 661 ) | |
| 662 del prepare[action] | |
| 663 | |
| 664 if prepare: | |
| 665 raise exceptions.InternalError('"prepare" should be empty') | |
| 666 | |
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667 async def _do_create_files( |
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668 self, |
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669 app_data: dict, |
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670 ) -> None: |
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671 dest_path = app_data["_instance_dir_path"] |
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672 files = app_data.get("files") |
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673 if not files: |
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674 return |
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675 if not isinstance(files, dict): |
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676 raise ValueError('"files" must be a dictionary') |
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677 for filename, data in files.items(): |
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678 path = dest_path / filename |
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679 if path.is_file(): |
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680 log.info(f"{path} already exists, skipping") |
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681 with path.open("w") as f: |
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682 f.write(data.get("content", "")) |
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683 log.debug(f"{path} created") |
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684 |
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685 async def start_common(self, app_data: dict) -> None: |
| 3372 | 686 """Method running common action when starting a manager |
| 687 | |
| 688 It should be called by managers in "start" method. | |
| 689 """ | |
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690 await self._do_prepare(app_data) |
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691 await self._do_create_files(app_data) |