python-gitlab/gitlab/base.py at main · rithwikch/python-gitlab · GitHub

Repository navigation

History

380 lines (314 loc) · 12.8 KB

Raw

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

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

# -*- coding: utf-8 -*-

# This program 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 3 of the License, or

# (at your option) any later version.

# 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 Lesser General Public License for more details.

# You should have received a copy of the GNU Lesser General Public License

# along with this program. If not, see <http://www.gnu.org/licenses/>.

import importlib

import pprint

import textwrap

from dataclasses import dataclass

from types import ModuleType

from typing import Any, Dict, Iterable, Optional, Tuple, Type, Union

import gitlab

from gitlab import types as g_types

from gitlab.exceptions import GitlabParsingError

from .client import Gitlab, GitlabList

__all__ = [

"RequiredOptional",

"RESTObject",

"RESTObjectList",

"RESTManager",

]

_URL_ATTRIBUTE_ERROR = (

f"https://python-gitlab.readthedocs.io/en/v{gitlab.__version__}/"

f"faq.html#attribute-error-list"

)

class RESTObject:

"""Represents an object built from server data.

It holds the attributes know from the server, and the updated attributes in

another. This allows smart updates, if the object allows it.

You can redefine ``_id_attr`` in child classes to specify which attribute

must be used as uniq ID. ``None`` means that the object can be updated

without ID in the url.

"""

_id_attr: Optional[str] = "id"

_attrs: Dict[str, Any]

_created_from_list: bool # Indicates if object was created from a list() action

_module: ModuleType

_parent_attrs: Dict[str, Any]

_short_print_attr: Optional[str] = None

_updated_attrs: Dict[str, Any]

manager: "RESTManager"

def __init__(

self,

manager: "RESTManager",

attrs: Dict[str, Any],

created_from_list: bool = False,

) -> None:

if not isinstance(attrs, dict):

raise GitlabParsingError(

"Attempted to initialize RESTObject with a non-dictionary value: "

"{!r}\nThis likely indicates an incorrect or malformed server "

"response.".format(attrs)

)

self.__dict__.update(

{

"manager": manager,

"_attrs": attrs,

"_updated_attrs": {},

"_module": importlib.import_module(self.__module__),

"_created_from_list": created_from_list,

}

)

self.__dict__["_parent_attrs"] = self.manager.parent_attrs

self._create_managers()

def __getstate__(self) -> Dict[str, Any]:

state = self.__dict__.copy()

module = state.pop("_module")

state["_module_name"] = module.__name__

return state

def __setstate__(self, state: Dict[str, Any]) -> None:

module_name = state.pop("_module_name")

self.__dict__.update(state)

self.__dict__["_module"] = importlib.import_module(module_name)

def __getattr__(self, name: str) -> Any:

try:

return self.__dict__["_updated_attrs"][name]

except KeyError:

try:

value = self.__dict__["_attrs"][name]

# If the value is a list, we copy it in the _updated_attrs dict

# because we are not able to detect changes made on the object

# (append, insert, pop, ...). Without forcing the attr

# creation __setattr__ is never called, the list never ends up

# in the _updated_attrs dict, and the update() and save()

# method never push the new data to the server.

# See https://github.com/python-gitlab/python-gitlab/issues/306

# note: _parent_attrs will only store simple values (int) so we

# don't make this check in the next except block.

if isinstance(value, list):

self.__dict__["_updated_attrs"][name] = value[:]

return self.__dict__["_updated_attrs"][name]

return value

except KeyError:

try:

return self.__dict__["_parent_attrs"][name]

except KeyError as exc:

message = (

f"{type(self).__name__!r} object has no attribute {name!r}"

)

if self._created_from_list:

message = (

f"{message}\n\n"

+ textwrap.fill(

f"{self.__class__!r} was created via a list() call and "

f"only a subset of the data may be present. To ensure "

f"all data is present get the object using a "

f"get(object.id) call. For more details, see:"

)

+ f"\n\n{_URL_ATTRIBUTE_ERROR}"

)

raise AttributeError(message) from exc

def __setattr__(self, name: str, value: Any) -> None:

self.__dict__["_updated_attrs"][name] = value

def __str__(self) -> str:

data = self._attrs.copy()

data.update(self._updated_attrs)

return f"{type(self)} => {data}"

def pformat(self) -> str:

data = self._attrs.copy()

data.update(self._updated_attrs)

return f"{type(self)} => \n{pprint.pformat(data)}"

def pprint(self) -> None:

print(self.pformat())

def __repr__(self) -> str:

if self._id_attr:

return f"<{self.__class__.__name__} {self._id_attr}:{self.get_id()}>"

else:

return f"<{self.__class__.__name__}>"

def __eq__(self, other: object) -> bool:

if not isinstance(other, RESTObject):

return NotImplemented

if self.get_id() and other.get_id():

return self.get_id() == other.get_id()

return super() == other

def __ne__(self, other: object) -> bool:

if not isinstance(other, RESTObject):

return NotImplemented

if self.get_id() and other.get_id():

return self.get_id() != other.get_id()

return super() != other

def __dir__(self) -> Iterable[str]:

return set(self.attributes).union(super().__dir__())

def __hash__(self) -> int:

if not self.get_id():

return super().__hash__()

return hash(self.get_id())

def _create_managers(self) -> None:

# NOTE(jlvillal): We are creating our managers by looking at the class

# annotations. If an attribute is annotated as being a *Manager type

# then we create the manager and assign it to the attribute.

for attr, annotation in sorted(self.__annotations__.items()):

# We ignore creating a manager for the 'manager' attribute as that

# is done in the self.__init__() method

if attr in ("manager",):

continue

if not isinstance(annotation, (type, str)):

continue

if isinstance(annotation, type):

cls_name = annotation.__name__

else:

cls_name = annotation

# All *Manager classes are used except for the base "RESTManager" class

if cls_name == "RESTManager" or not cls_name.endswith("Manager"):

continue

cls = getattr(self._module, cls_name)

manager = cls(self.manager.gitlab, parent=self)

# Since we have our own __setattr__ method, we can't use setattr()

self.__dict__[attr] = manager

def _update_attrs(self, new_attrs: Dict[str, Any]) -> None:

self.__dict__["_updated_attrs"] = {}

self.__dict__["_attrs"] = new_attrs

def get_id(self) -> Optional[Union[int, str]]:

"""Returns the id of the resource."""

if self._id_attr is None or not hasattr(self, self._id_attr):

return None

return getattr(self, self._id_attr)

@property

def encoded_id(self) -> Optional[Union[int, str]]:

"""Ensure that the ID is url-encoded so that it can be safely used in a URL

path"""

obj_id = self.get_id()

if isinstance(obj_id, str):

obj_id = gitlab.utils.EncodedId(obj_id)

return obj_id

@property

def attributes(self) -> Dict[str, Any]:

d = self.__dict__["_updated_attrs"].copy()

d.update(self.__dict__["_attrs"])

d.update(self.__dict__["_parent_attrs"])

return d

class RESTObjectList:

"""Generator object representing a list of RESTObject's.

This generator uses the Gitlab pagination system to fetch new data when

required.

Note: you should not instantiate such objects, they are returned by calls

to RESTManager.list()

Args:

manager: Manager to attach to the created objects

obj_cls: Type of objects to create from the json data

_list: A GitlabList object

"""

def __init__(

self, manager: "RESTManager", obj_cls: Type[RESTObject], _list: GitlabList

) -> None:

"""Creates an objects list from a GitlabList.

You should not create objects of this type, but use managers list()

methods instead.

Args:

manager: the RESTManager to attach to the objects

obj_cls: the class of the created objects

_list: the GitlabList holding the data

"""

self.manager = manager

self._obj_cls = obj_cls

self._list = _list

def __iter__(self) -> "RESTObjectList":

return self

def __len__(self) -> int:

return len(self._list)

def __next__(self) -> RESTObject:

return self.next()

def next(self) -> RESTObject:

data = self._list.next()

return self._obj_cls(self.manager, data, created_from_list=True)

@property

def current_page(self) -> int:

"""The current page number."""

return self._list.current_page

@property

def prev_page(self) -> Optional[int]:

"""The previous page number.

If None, the current page is the first.

"""

return self._list.prev_page

@property

def next_page(self) -> Optional[int]:

"""The next page number.

If None, the current page is the last.

"""

return self._list.next_page

@property

def per_page(self) -> Optional[int]:

"""The number of items per page."""

return self._list.per_page

@property

def total_pages(self) -> Optional[int]:

"""The total number of pages."""

return self._list.total_pages

@property

def total(self) -> Optional[int]:

"""The total number of items."""

return self._list.total

@dataclass(frozen=True)

class RequiredOptional:

required: Tuple[str, ...] = ()

optional: Tuple[str, ...] = ()

class RESTManager:

"""Base class for CRUD operations on objects.

Derived class must define ``_path`` and ``_obj_cls``.

``_path``: Base URL path on which requests will be sent (e.g. '/projects')

``_obj_cls``: The class of objects that will be created

"""

_create_attrs: RequiredOptional = RequiredOptional()

_update_attrs: RequiredOptional = RequiredOptional()

_path: Optional[str] = None

_obj_cls: Optional[Type[RESTObject]] = None

_from_parent_attrs: Dict[str, Any] = {}

_types: Dict[str, Type[g_types.GitlabAttribute]] = {}

_computed_path: Optional[str]

_parent: Optional[RESTObject]

_parent_attrs: Dict[str, Any]

gitlab: Gitlab

def __init__(self, gl: Gitlab, parent: Optional[RESTObject] = None) -> None:

"""REST manager constructor.

Args:

gl: :class:`~gitlab.Gitlab` connection to use to make requests.

parent: REST object to which the manager is attached.

"""

self.gitlab = gl

self._parent = parent # for nested managers

self._computed_path = self._compute_path()

@property

def parent_attrs(self) -> Optional[Dict[str, Any]]:

return self._parent_attrs

def _compute_path(self, path: Optional[str] = None) -> Optional[str]:

self._parent_attrs = {}

if path is None:

path = self._path

if path is None:

return None

if self._parent is None or not self._from_parent_attrs:

return path

data = {

self_attr: getattr(self._parent, parent_attr, None)

for self_attr, parent_attr in self._from_parent_attrs.items()

}

self._parent_attrs = data

return path.format(**data)

@property

def path(self) -> Optional[str]:

return self._computed_path

python-gitlab/gitlab/base.py at main · rithwikch/python-gitlab · GitHub

Repository navigation

Expand file tree

Breadcrumbs

base.py

Latest commit

History

Breadcrumbs

base.py

File metadata and controls