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GeezerVison is showing github.com — pythonVSCode/pythonFiles/PythonTools/ipythonServer.py at master · jrieken/pythonVSCode Expand file tree/ Copy pathipythonServer.pyMore file actions 703 lines (595 loc) · 22.4 KB / Copy pathipythonServer.pyFile metadata and controls703 lines (595 loc) · 22.4 KB 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 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' # The great "support IPython 2, 3, 4" strat begins if not TEST: try: import jupyter except ImportError: jupyter_era = False else: jupyter_era = True if jupyter_era: # Jupyter / IPython 4.x from jupyter_client import KernelManager from jupyter_client.kernelspec import KernelSpecManager from jupyter_client import MultiKernelManager kernelSpecManager = KernelSpecManager() multiKernelManager = MultiKernelManager() else: from IPython.kernel import KernelManager from IPython.kernel.kernelspec import KernelSpecManager from IPython.kernel.multikernelmanager import MultiKernelManager kernelSpecManager = KernelSpecManager() multiKernelManager = MultiKernelManager() # End of the great "support IPython 2, 3, 4" strat def _debug_write(out): if DEBUG: sys.__stdout__.write(out) sys.__stdout__.write("\n") sys.__stdout__.flush() def listKernelSpecs(): """Returns a dict mapping kernel names to resource directories.""" return kernelSpecManager.get_all_specs() class IPythonExitException(Exception): pass 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 iPythonKernelResponseMonitor(object): def __init__(self, kernelUUID, socketConnection, send_lock, shell_channel, iopub_channel): import threading self.kernel = multiKernelManager.get_kernel(kernelUUID) self.conn = socketConnection self.is_stop_requested = False self.shell_channel = shell_channel self.iopub_channel = iopub_channel self.send_lock = send_lock thread.start_new_thread(self.start_processing, ('shell', 1)) thread.start_new_thread(self.start_processing, ('io', 1)) def stop(self): self.is_stop_requested = True def check_for_exit_socket_loop(self): return self.is_stop_requested def _populateErrorContents(self, sourceContents, targetContents): try: targetContents.ename = sourceContents.ename targetContents.evalue = sourceContents.evalue targetContents.traceback = sourceContents.traceback except AttributeError: pass def start_processing(self, channel, *args): """loop to read the io ports/messages""" _debug_write('Started processing thread') try: while True: if self.check_for_exit_socket_loop(): break # message can be JSON, but not always # (http://jupyter-client.readthedocs.io/en/latest/messaging.html) # assume for now that dates are the only crappy (non JSONable # stuff sent) if channel == 'shell': try: exe_result = self.shell_channel.get_shell_msg( timeout=30) json_to_send = json.dumps(exe_result, default=str) with self.send_lock: _debug_write('shell_result') _debug_write(json_to_send) write_bytes(self.conn, iPythonSocketServer._SHEL) write_string(self.conn, json_to_send) except Empty: pass if channel == 'io': try: msg = self.iopub_channel.get_iopub_msg(timeout=30) json_to_send = json.dumps(msg, default=str) with self.send_lock: _debug_write('iopub_msg') _debug_write(json_to_send) write_bytes(self.conn, iPythonSocketServer._IOPB) write_string(self.conn, json_to_send) except Empty: 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() class iPythonSocketServer(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 = iPythonSocketServer._COMMANDS.get(inp) if inp and cmd is not None: id = "" try: if iPythonSocketServer._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)[ 0] 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, iPythonSocketServer._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, iPythonSocketServer._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, iPythonSocketServer._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, iPythonSocketServer._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, iPythonSocketServer._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, iPythonSocketServer._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, iPythonSocketServer._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, iPythonSocketServer._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, iPythonSocketServer._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, iPythonSocketServer._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, iPythonSocketServer._EXIT) def send_command_executed(self): with self.send_lock: write_bytes(self.conn, iPythonSocketServer._DONE) def read_line(self): """reads a line of input from standard input""" with self.send_lock: write_bytes(self.conn, iPythonSocketServer._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, iPythonSocketServer._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, iPythonSocketServer._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 iPythonReadLine(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 = iPythonSocketServer() 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__': iPythonReadLine().watch() |
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