pythonVSCode/pythonFiles/completionServer.py at master · Kavakuo/pythonVSCode · GitHub

History

587 lines (497 loc) · 18.1 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

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

import sys

import socket

import select

import time

import re

import json

import struct

import imp

import traceback

import random

import os

import io

import inspect

import types

from collections import deque

import os

import warnings

from encodings import utf_8, ascii

try:

import thread

except ImportError:

# Renamed in Python3k

import _thread as thread

# Reference material

# http://jupyter-client.readthedocs.io/en/latest/messaging.html

# http://pydoc.net/Python/magni/1.4.0/magni.tests.ipynb_examples/

# http://www.xavierdupre.fr/app/pyquickhelper/helpsphinx/_modules/pyquickhelper/ipythonhelper/notebook_runner.html

import visualstudio_py_util as _vspu

to_bytes = _vspu.to_bytes

read_bytes = _vspu.read_bytes

read_int = _vspu.read_int

read_string = _vspu.read_string

write_bytes = _vspu.write_bytes

write_int = _vspu.write_int

write_string = _vspu.write_string

try:

unicode

except NameError:

unicode = str

try:

BaseException

except NameError:

# BaseException not defined until Python 2.5

BaseException = Exception

try:

from Queue import Empty, Queue # Python 2

except ImportError:

from queue import Empty, Queue # Python 3

DEBUG = os.environ.get('DEBUG_DJAYAMANNE_IPYTHON', '0') == '1'

TEST = os.environ.get('PYTHON_DONJAYAMANNE_TEST', '0') == '1'

def _debug_write(out):

if DEBUG:

sys.__stdout__.write(out)

sys.__stdout__.write("\n")

sys.__stdout__.flush()

class SafeSendLock(object):

"""a lock which ensures we're released if we take a KeyboardInterrupt exception acquiring it"""

def __init__(self):

self.lock = thread.allocate_lock()

def __enter__(self):

self.acquire()

def __exit__(self, exc_type, exc_value, tb):

self.release()

def acquire(self):

try:

self.lock.acquire()

except KeyboardInterrupt:

try:

self.lock.release()

except:

pass

raise

def release(self):

self.lock.release()

class jediSocketServer(object):

"""back end for executing code in kernel. Handles all of the communication with the remote process."""

"""Messages sent back as responses"""

_PONG = to_bytes('PONG')

_EXIT = to_bytes('EXIT')

_LSKS = to_bytes('LSKS')

_EROR = to_bytes('EROR')

_TEST = to_bytes('TEST')

_STRK = to_bytes('STRK')

_STPK = to_bytes('STPK')

_RSTK = to_bytes('RSTK')

_ITPK = to_bytes('ITPK')

_RUN = to_bytes('RUN ')

_SHEL = to_bytes('SHEL')

_IOPB = to_bytes('IOPB')

def __init__(self):

import threading

self.conn = None

self.send_lock = SafeSendLock()

self.input_event = threading.Lock()

# lock starts acquired (we use it like a manual reset event)

self.input_event.acquire()

self.input_string = None

self.exit_requested = False

self.kernelMonitor = None

self.shell_channel = None

def connect(self, port):

# start a new thread for communicating w/ the remote process

_debug_write('Connecting to socket port: ' + str(port))

self.conn = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

self.conn.connect(('127.0.0.1', port))

_debug_write('Connected to socket')

# perform the handshake

with self.send_lock:

write_string(self.conn, "Some Guid")

write_int(self.conn, os.getpid())

_debug_write('Handshake information sent')

thread.start_new_thread(self.start_processing, ())

def start_processing(self):

"""loop on created thread which processes communicates with the REPL window"""

_debug_write('Started processing thread')

try:

while True:

if self.check_for_exit_socket_loop():

break

# we receive a series of 4 byte commands. Each command then

# has it's own format which we must parse before continuing to

# the next command.

self.flush()

self.conn.settimeout(10)

try:

inp = read_bytes(self.conn, 4)

self.conn.settimeout(None)

cmd = jediSocketServer._COMMANDS.get(inp)

if inp and cmd is not None:

id = ""

try:

if jediSocketServer._COMMANDS_WITH_IDS.get(inp) == True:

while True:

try:

id = read_string(self.conn)

break

except socket.timeout:

pass

cmd(self, id)

else:

cmd(self)

except:

commandName = utf_8.decode(inp)[0]

try:

commandName = ascii.Codec.encode(commandName)[

except UnicodeEncodeError:

pass

self.replyWithError(commandName, id)

else:

if inp:

print ('unknown command', inp)

break

except socket.timeout:

pass

except IPythonExitException:

_debug_write('IPythonExitException')

_debug_write(traceback.format_exc())

pass

except socket.error:

_debug_write('socket error')

_debug_write(traceback.format_exc())

pass

except:

_debug_write('error in repl loop')

_debug_write(traceback.format_exc())

# try and exit gracefully, then interrupt main if necessary

time.sleep(2)

traceback.print_exc()

self.exit_process()

def check_for_exit_socket_loop(self):

return self.exit_requested

def replyWithError(self, commandName, id):

with self.send_lock:

traceMessage = traceback.format_exc()

_debug_write('Replying with error:' + traceMessage)

write_bytes(self.conn, jediSocketServer._EROR)

write_string(self.conn, commandName)

write_string(self.conn, "" if id is None else id)

write_string(self.conn, traceMessage)

def _cmd_exit(self):

"""exits the interactive process"""

self.exit_requested = True

self.exit_process()

def _cmd_ping(self, id):

"""ping"""

_debug_write('Ping received')

while True:

try:

message = read_string(self.conn)

break

except socket.timeout:

pass

with self.send_lock:

_debug_write('Pong response being sent out')

write_bytes(self.conn, jediSocketServer._PONG)

write_string(self.conn, id)

write_string(self.conn, message)

def _cmd_lstk(self, id):

"""List kernel specs"""

_debug_write('Listing kernel specs')

kernelspecs = json.dumps(listKernelSpecs())

with self.send_lock:

_debug_write('Replying with kernel Specs')

write_bytes(self.conn, jediSocketServer._LSKS)

write_string(self.conn, id)

write_string(self.conn, kernelspecs)

def _cmd_strk(self, id):

"""Start a kernel by name"""

_debug_write('Listing kernel specs')

while True:

try:

kernelName = read_string(self.conn)

break

except socket.timeout:

pass

kernelUUID = multiKernelManager.start_kernel(kernel_name=kernelName)

self._postStartKernel(kernelUUID)

# get the config and the connection FileExistsError

try:

config = kernel_manager.config

except:

config = {}

try:

connection_file = kernel_manager.connection_file

except:

connection_file = ""

with self.send_lock:

_debug_write('Replying with kernel Specs= ' + str(kernelUUID))

write_bytes(self.conn, jediSocketServer._STRK)

write_string(self.conn, id)

write_string(self.conn, str(kernelUUID))

write_string(self.conn, json.dumps(config))

write_string(self.conn, connection_file)

def _postStartKernel(self, kernelUUID):

kernel_manager = multiKernelManager.get_kernel(kernelUUID)

kernel_client = kernel_manager.client()

kernel_client.start_channels()

try:

# IPython 3.x

kernel_client.wait_for_ready()

iopub = kernel_client

shell = kernel_client

# todo: get_stdin_msg

except AttributeError:

# Ipython 2.x

# Based on https://github.com/paulgb/runipy/pull/49/files

iopub = kernel_client.iopub_channel

shell = kernel_client.shell_channel

shell.get_shell_msg = shell.get_msg

iopub.get_iopub_msg = iopub.get_msg

# todo: get_stdin_msg

self.shell_channel = shell

self.kernelMonitor = iPythonKernelResponseMonitor(

kernelUUID, self.conn, self.send_lock, shell, iopub)

def stopKernel(self, kernelUUID):

"""Shutdown a kernel by UUID"""

try:

if self.kernelMonitor is not None:

self.kernelMonitor.stop()

finally:

pass

try:

kernel_manager = multiKernelManager.get_kernel(kernelUUID)

kernel_client = kernel_manager.client()

kernel_client.stop_channels()

finally:

pass

try:

kernel_manager = multiKernelManager.get_kernel(kernelUUID)

kernel_manager.shutdown_kernel()

except:

pass

finally:

self.shell_channel = None

self.kernelMonitor = None

def _cmd_stpk(self, id):

"""Shutdown a kernel by UUID"""

while True:

try:

kernelUUID = read_string(self.conn)

break

except socket.timeout:

pass

self.stopKernel(kernelUUID)

with self.send_lock:

write_bytes(self.conn, jediSocketServer._STPK)

write_string(self.conn, id)

def _cmd_kill(self, id):

"""Shutdown a kernel by UUID"""

while True:

try:

kernelUUID = read_string(self.conn)

break

except socket.timeout:

pass

try:

if self.kernelMonitor is not None:

self.kernelMonitor.stop()

finally:

pass

try:

kernel_manager = multiKernelManager.get_kernel(kernelUUID)

kernel_client = kernel_manager.client()

kernel_client.stop_channels()

finally:

pass

try:

kernel_manager = multiKernelManager.get_kernel(kernelUUID)

kernel_manager.shutdown_kernel()

except:

pass

def _cmd_rstk(self, id):

"""Restart a kernel by UUID"""

while True:

try:

kernelUUID = read_string(self.conn)

break

except socket.timeout:

pass

kernel_manager = multiKernelManager.get_kernel(kernelUUID)

kernel_manager.restart_kernel(now=True)

with self.send_lock:

write_bytes(self.conn, jediSocketServer._RSTK)

write_string(self.conn, id)

def _cmd_itpk(self, id):

"""Interrupt a kernel by UUID"""

while True:

try:

kernelUUID = read_string(self.conn)

break

except socket.timeout:

pass

kernel_manager = multiKernelManager.get_kernel(kernelUUID)

kernel_manager.interrupt_kernel()

with self.send_lock:

write_bytes(self.conn, jediSocketServer._ITPK)

write_string(self.conn, id)

def _cmd_run(self, id):

"""runs the received snippet of code (kernel is expected to have been started)"""

while True:

try:

code = read_string(self.conn)

break

except socket.timeout:

pass

msg_id = self.shell_channel.execute(code)

_debug_write('msg_id = ' + msg_id)

with self.send_lock:

write_bytes(self.conn, jediSocketServer._RUN)

write_string(self.conn, id)

write_string(self.conn, msg_id)

def _cmd_abrt(self):

"""aborts the current running command"""

# abort command, interrupts execution of the main thread.

pass

def _cmd_inpl(self):

"""handles the input command which returns a string of input"""

self.input_string = read_string(self.conn)

self.input_event.release()

def send_prompt(self, ps1, ps2, update_all=True):

"""sends the current prompt to the interactive window"""

# with self.send_lock:

# write_bytes(self.conn, jediSocketServer._PRPC)

# write_string(self.conn, ps1)

# write_string(self.conn, ps2)

# write_int(self.conn, update_all)

pass

def send_error(self):

"""reports that an error occured to the interactive window"""

with self.send_lock:

write_bytes(self.conn, jediSocketServer._ERRE)

def send_exit(self):

"""reports the that the REPL process has exited to the interactive window"""

with self.send_lock:

write_bytes(self.conn, jediSocketServer._EXIT)

def send_command_executed(self):

with self.send_lock:

write_bytes(self.conn, jediSocketServer._DONE)

def read_line(self):

"""reads a line of input from standard input"""

with self.send_lock:

write_bytes(self.conn, jediSocketServer._RDLN)

self.input_event.acquire()

return self.input_string

def write_stdout(self, value):

"""writes a string to standard output in the remote console"""

with self.send_lock:

write_bytes(self.conn, jediSocketServer._STDO)

write_string(self.conn, value)

def write_stderr(self, value):

"""writes a string to standard input in the remote console"""

with self.send_lock:

write_bytes(self.conn, jediSocketServer._STDE)

write_string(self.conn, value)

################################################################

# Implementation of execution, etc...

def execution_loop(self):

"""loop on the main thread which is responsible for executing code"""

while True:

exit = self.run_one_command(cur_modules, cur_ps1, cur_ps2)

if exit:

return

def run_command(self, command):

"""runs the specified command which is a string containing code"""

pass

def interrupt_main(self):

"""aborts the current running command"""

pass

def exit_process(self):

"""exits the REPL process"""

sys.exit(0)

def flush(self):

"""flushes the stdout/stderr buffers"""

pass

_COMMANDS = {

to_bytes('run '): _cmd_run,

to_bytes('abrt'): _cmd_abrt,

to_bytes('exit'): _cmd_exit,

to_bytes('ping'): _cmd_ping,

to_bytes('inpl'): _cmd_inpl,

to_bytes('lsks'): _cmd_lstk,

to_bytes('strk'): _cmd_strk,

to_bytes('stpk'): _cmd_stpk,

to_bytes('rstk'): _cmd_rstk,

to_bytes('itpk'): _cmd_itpk,

to_bytes('kill'): _cmd_kill,

}

_COMMANDS_WITH_IDS = {

to_bytes('lsks'): True,

to_bytes('ping'): True,

to_bytes('strk'): True,

to_bytes('stpk'): True,

to_bytes('rstk'): True,

to_bytes('itpk'): True,

to_bytes('run '): True,

}

def exit_work_item():

sys.exit(0)

class jediReadLine(object):

def __init__(self):

self._input = io.open(sys.stdin.fileno(), encoding='utf-8')

def _deserialize(self, request):

"""Deserialize request from VSCode.

Args:

request: String with raw request from VSCode.

Returns:

Python dictionary with request data.

"""

return json.loads(request)

def _set_request_config(self, config):

self.use_snippets = config.get('useSnippets')

self.show_doc_strings = config.get('showDescriptions', True)

self.fuzzy_matcher = config.get('fuzzyMatcher', False)

def _process_request(self, request):

"""Accept serialized request from VSCode and write response.

"""

request = self._deserialize(request)

self._set_request_config(request.get('config', {}))

lookup = request.get('lookup', 'completions')

if lookup == 'definitions':

return self._write_response('defs')

elif lookup == 'arguments':

return self._write_response('arguments')

elif lookup == 'usages':

return self._write_response('usages')

else:

return self._write_response('Dont Know')

def _write_response(self, response):

sys.stdout.write(response + '\n')

sys.stdout.flush()

def watch(self):

port = int(sys.argv[1])

_debug_write('Socket port received: ' + str(port))

server = jediSocketServer()

server.connect(port)

sys.__stdout__.write('Started')

sys.__stdout__.write("\n")

sys.__stdout__.flush()

while True:

try:

kernelUUID = self._input.readline()

sys.__stdout__.write('about to die\n')

sys.__stdout__.flush()

if (len(kernelUUID) > 0):

try:

server.stopKernel(kernelUUID)

except:

pass

server.exit_requested = True

sys.__stdout__.write('adios\n')

sys.__stdout__.flush()

except Exception:

sys.stderr.write(traceback.format_exc() + '\n')

sys.stderr.flush()

if __name__ == '__main__':

jediReadLine().watch()

pythonVSCode/pythonFiles/completionServer.py at master · Kavakuo/pythonVSCode · GitHub

Expand file tree

Breadcrumbs

completionServer.py

Latest commit

History

Breadcrumbs

completionServer.py

File metadata and controls