How to use _cancel method in stestr
Best Python code snippet using stestr_python
pyscript.py
Source:pyscript.py 
1#===============================================================================2# Copyright 2012 Jake Ross3#4# Licensed under the Apache License, Version 2.0 (the "License");5# you may not use this file except in compliance with the License.6# You may obtain a copy of the License at7#8# http://www.apache.org/licenses/LICENSE-2.09#10# Unless required by applicable law or agreed to in writing, software11# distributed under the License is distributed on an "AS IS" BASIS,12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.13# See the License for the specific language governing permissions and14# limitations under the License.15#===============================================================================16#============= enthought library imports =======================17from traits.api import Str, Any, Bool, DelegatesTo, Dict, Property18from pyface.timer.do_later import do_later19from pyface.confirmation_dialog import confirm# from pyface.wx.dialog import confirmation20#============= standard library imports ========================21import time22import os23import inspect24from threading import Thread, Event25#============= local library imports ==========================26from src.pyscripts.wait_dialog import WaitDialog27from src.loggable import Loggable28from Queue import Queue, Empty29from globals import globalv30class DummyManager(Loggable):31 def open_valve(self, *args, **kw):32 self.info('open valve')33 def close_valve(self, *args, **kw):34 self.info('close valve')35class GosubError(Exception):36 def __init__(self, path):37 self.path = path38 def __str__(self):39 return 'GosubError: {} does not exist'.format(self.path)40def KlassError(Exceotion):41 def __init__(self, klass):42 self.klass = klass43 def __str__(self):44 return 'KlassError: {} does not exist'.format(self.klass)45class PyscriptError(Exception):46 def __init__(self, name, err):47 self.name = name48 self.err = err49 def __str__(self):50 return 'Pyscript error in {}: {}'.format(self.name, self.err)51class IntervalError(Exception):52 def __str__(self):53 return 'Poorly matched BeginInterval-CompleteInterval'54class MainError(Exception):55 def __str__(self):56 return 'No "main" function defined'57def verbose_skip(func):58 def decorator(obj, *args, **kw):59 if obj._truncate:60 return61 fname = func.__name__62# print fname, obj.testing_syntax, obj._cancel63 if fname.startswith('_m_'):64 fname = fname[3:]65 args1, _, _, defaults = inspect.getargspec(func)66 nd = sum([1 for di in defaults if di is not None]) if defaults else 067 min_args = len(args1) - 1 - nd68 an = len(args) + len(kw)69 if an < min_args:70 raise PyscriptError('invalid arguments count for {}, args={} kwargs={}'.format(fname,71 args, kw))72# if obj.testing_syntax or obj._cancel:73# return74 if obj._cancel:75 return76 obj.debug('{} {} {}'.format(fname, args, kw))77 return func(obj, *args, **kw)78 return decorator79def skip(func):80 def decorator(obj, *args, **kw):81 if obj.testing_syntax or obj._cancel or obj._truncate:82 return83 return func(obj, *args, **kw)84 return decorator85def count_verbose_skip(func):86 def decorator(obj, *args, **kw):87 if obj._truncate or obj._cancel:88 return89 fname = func.__name__90# print fname, obj.testing_syntax, obj._cancel91 if fname.startswith('_m_'):92 fname = fname[3:]93 args1, _, _, defaults = inspect.getargspec(func)94 nd = sum([1 for di in defaults if di is not None]) if defaults else 095 min_args = len(args1) - 1 - nd96 an = len(args) + len(kw)97 if an < min_args:98 raise PyscriptError('invalid arguments count for {}, args={} kwargs={}'.format(fname,99 args, kw))100# if obj._cancel:101 if obj.testing_syntax:102 func(obj, calc_time=True, *args, **kw)103 return104 obj.debug('{} {} {}'.format(fname, args, kw))105 return func(obj, *args, **kw)106 return decorator107def makeRegistry():108 registry = {}109 def registrar(func):110 registry[func.__name__] = func.__name__111 return func # normally a decorator returns a wrapped function,112 # but here we return func unmodified, after registering it113 registrar.commands = registry114 return registrar115def makeNamedRegistry(cmd_register):116 def named_register(name):117 def decorator(func):118 cmd_register.commands[name] = func.__name__119 return func120 return decorator121 return named_register122command_register = makeRegistry()123named_register = makeNamedRegistry(command_register)124'''125@todo: cancel script if action fails. eg fatal comm. error126'''127class PyScript(Loggable):128 text = Property129 syntax_checked = Property130 manager = Any131 parent = Any132 parent_script = Any133 root = Str134 filename = Str135 info_color = Str136 testing_syntax = Bool(False)137 cancel_flag = Bool138 hash_key = None139 _ctx = Dict140 _text = Str141 _interval_stack = Queue142 _interval_flag = None143 _cancel = Bool(False)144 _completed = False145 _truncate = False146 _syntax_checked = False147 _syntax_error = None148 _gosub_script = None149 _wait_dialog = None150 _estimated_duration = 0151 _graph_calc = False152 def execute(self, new_thread=False, bootstrap=True, finished_callback=None):153 def _ex_():154 if bootstrap:155 self.bootstrap()156 ok = True157 if not self.syntax_checked:158 self.test()159 if ok:160 self._execute()161 if finished_callback:162 finished_callback()163 return self._completed164 if new_thread:165 t = Thread(target=_ex_)166 t.start()167 else:168 return _ex_()169 def test(self):170 self.testing_syntax = True171 self._syntax_error = True172 self.info('testing syntax')173 r = self._execute(test=True)174 if r is not None:175 self.info('invalid syntax')176 ee = PyscriptError(self.filename, r)177 raise ee178 elif not self._interval_stack.empty():179 raise IntervalError()180 else:181 self.info('syntax checking passed')182 self._syntax_error = False183 self.syntax_checked = True184 self.testing_syntax = False185 def compile_snippet(self, snippet):186 try:187 code = compile(snippet, '<string>', 'exec')188 except Exception, e:189 import traceback190 traceback.print_exc()191 return e192 else:193 return code194 def execute_snippet(self, snippet):195 safe_dict = self.get_context()196 code_or_err = self._compile_snippet(snippet)197 if not isinstance(code_or_err, Exception):198 try:199 exec code_or_err in safe_dict200 safe_dict['main']()201 except KeyError, e:202 return MainError()203 except Exception, e:204 import traceback205 traceback.print_exc()206# # self.warning_dialog(str(e))207 return e208 else:209 return code_or_err210# return traceback.format_exc()211# safe_dict = self.get_context()212# try:213# code = compile(snippet, '<string>', 'exec')214# exec code in safe_dict215# safe_dict['main']()216# except KeyError, e:217# print e218# print '#============'219#220# for di in safe_dict.keys():221# print di222#223# return MainError()224#225# except Exception, e:226# import traceback227# traceback.print_exc()228# # self.warning_dialog(str(e))229# return e230# return traceback.format_exc()231 def syntax_ok(self):232 return not self._syntax_error233 def check_for_modifications(self):234 old = self.toblob()235 with open(self.filename, 'r') as f:236 new = f.read()237 return old != new238 def toblob(self):239 return self.text240 def get_estimated_duration(self):241 return self._estimated_duration242 def set_default_context(self):243 pass244 def setup_context(self, **kw):245 self._ctx.update(kw)246 def get_context(self):247 ctx = dict()248 for k in self.get_commands():249 if isinstance(k, tuple):250 ka, kb = k251 name, func = ka, getattr(self, kb)252 else:253 name, func = k, getattr(self, k)254 ctx[name] = func255 for v in self.get_variables():256 ctx[v] = getattr(self, v)257 ctx.update(self._ctx)258 return ctx259 def get_variables(self):260 return []261# def get_core_commands(self):262# cmds = [263# # ('info', '_m_info')264# ]265#266# return cmds267# def get_script_commands(self):268# return []269 def get_commands(self):270# return self.get_core_commands() + \271# return self.get_script_commands() + \272 return self.get_command_register() + \273 command_register.commands.items()274 def get_command_register(self):275 return []276 def truncate(self, style=None):277 if style is None:278 self._truncate = True279 if self._gosub_script is not None:280 self._gosub_script.truncate(style=style)281 def cancel(self):282 self._cancel = True283 if self._gosub_script is not None:284 if not self._gosub_script._cancel:285 self._gosub_script.cancel()286 if self.parent:287 self.parent._executing = False288 if self.parent_script:289 if not self.parent_script._cancel:290 self.parent_script.cancel()291 if self._wait_dialog:292 self._wait_dialog.stop()293 self._cancel_hook()294 def bootstrap(self, load=True, **kw):295 self._interval_flag = Event()296 self._interval_stack = Queue()297 if self.root and self.name and load:298 with open(self.filename, 'r') as f:299 self.text = f.read()300 return True301#==============================================================================302# commands303#==============================================================================304 @command_register305 def gosub(self, name=None, root=None, klass=None, **kw):306 if not name.endswith('.py'):307 name += '.py'308 if root is None:309 d = None310 if '/' in name:311 d = '/'312 elif ':' in name:313 d = ':'314 if d:315 dirs = name.split(d)316 name = dirs[0]317 for di in dirs[1:]:318 name = os.path.join(name, di)319 root = self.root320 p = os.path.join(root, name)321 if not os.path.isfile(p):322 raise GosubError(p)323 if klass is None:324 klass = self.__class__325 else:326 klassname = klass327 pkg = 'src.pyscripts.api'328 mod = __import__(pkg, fromlist=[klass])329 klass = getattr(mod, klass)330 if not klass:331 raise KlassError(klassname)332 s = klass(root=root,333# path=p,334 name=name,335 manager=self.manager,336 parent_script=self,337 _syntax_checked=self._syntax_checked,338 _ctx=self._ctx,339 **kw340 )341 if self.testing_syntax:342 s.bootstrap()343 err = s.test()344 if err:345 raise PyscriptError(self.name, err)346 else:347 if not self._cancel:348 self.info('doing GOSUB')349 self._gosub_script = s350 s.execute()351 self._gosub_script = None352 if not self._cancel:353 self.info('gosub finished')354 @verbose_skip355 @command_register356 def exit(self):357 self.info('doing EXIT')358 self.cancel()359 @command_register360 def complete_interval(self):361 try:362 pi = self._interval_stack.get(timeout=0.01)363 if pi != 'b':364 raise IntervalError()365 except Empty:366 raise IntervalError()367 if self.testing_syntax:368 return369 if self._cancel:370 return371 self.info('COMPLETE INTERVAL waiting for begin interval completion')372 # wait until _interval_flag is set373 while not self._interval_flag.isSet():374 if self._cancel:375 break376 self._sleep(0.5)377 if not self._cancel:378 self._interval_flag.clear()379 @verbose_skip380 @command_register381 def begin_interval(self, duration=0):382 def wait(t):383 self._sleep(t)384 if not self._cancel:385 self.info('interval finished')386 if self._interval_flag:387 self._interval_flag.set()388 duration = float(duration)389# if self.testing_syntax or self._cancel:390# return391 self._interval_stack.put('b')392 self.info('BEGIN INTERVAL waiting for {}'.format(duration))393 t = Thread(target=wait, args=(duration,))394 t.start()395 @command_register396 def sleep(self, duration=0, message=None):397 self._estimated_duration += duration398 if self.parent_script is not None:399 self.parent_script._estimated_duration += self._estimated_duration400 if self._graph_calc:401 va = self._xs[-1] + duration402 self._xs.append(va)403 self._ys.append(self._ys[-1])404 return405 if self.testing_syntax or self._cancel:406 return407 self.info('SLEEP {}'.format(duration))408 if globalv.experiment_debug:409 duration = min(duration, 5)410 self._sleep(duration, message=message)411 @skip412 @named_register('info')413 def _m_info(self, message=None):414 message = str(message)415 self.info(message)416 try:417 if self.manager:418 if self.info_color:419 self.manager.info(message, color=self.info_color, log=False)420 else:421 self.manager.info(message, log=False)422 except AttributeError, e:423 self.debug('m_info {}'.format(e))424#===============================================================================425# handlers426#===============================================================================427 def _cancel_flag_changed(self, v):428 if v:429 result = confirmation(None, 'Are you sure you want to cancel {}'.format(self.logger_name))430 if result != 5104:431 self.cancel()432 else:433 self.cancel_flag = False434#===============================================================================435# private436#===============================================================================437 def _execute(self):438 if not self.text:439 return 'No script text'440 self._cancel = False441 self._completed = False442 self._truncate = False443 error = self.execute_snippet(self.text)444 if error:445 return error446 if self.testing_syntax:447 return448 if self._cancel:449 self.info('{} canceled'.format(self.name))450 else:451 self.info('{} completed successfully'.format(self.name))452 self._completed = True453 if self.parent:454 self.parent._executing = False455 try:456 del self.parent.scripts[self.hash_key]457 except KeyError:458 pass459 def _manager_action(self, func, name=None, protocol=None, *args, **kw):460 man = self.manager461 if protocol is not None and man is not None:462 app = man.application463 if app is not None:464 args = (protocol,)465 if name is not None:466 args = (protocol, 'name=="{}"'.format(name))467 man = app.get_service(*args)468 if man is not None:469 if not isinstance(func, list):470 func = [(func, args, kw)]471 return [getattr(man, f)(*a, **k) for f, a, k in func]472 else:473 self.warning('could not find manager {}'.format(name))474 def _cancel_hook(self):475 pass476#==============================================================================477# Sleep/ Wait478#==============================================================================479 def _sleep(self, v, message=None):480 v = float(v)481# if self.testing_syntax or self._cancel:482# return483 if v > 1:484 if v >= 5:485 self._block(v, message=message, dialog=True)486 else:487 self._block(v, dialog=False)488 else:489 time.sleep(v)490 def _block(self, timeout, message=None, dialog=False):491 if dialog:492 if message is None:493 message = ''494 st = time.time()495# c = Condition()496# c.acquire()497 evt = Event()498 self._wait_dialog = wd = WaitDialog(wtime=timeout,499# condition=c,500 end_evt=evt,501 parent=self,502 title='{} - Wait'.format(self.logger_name),503 message='Waiting for {:0.1f} {}'.format(timeout, message)504 )505 do_later(wd.edit_traits)506 evt.wait(timeout=timeout + 0.25)507 do_later(wd.stop)508 if wd._canceled:509 self.cancel()510 elif wd._continued:511 self.info('continuing script after {:0.3f} s'.format(time.time() - st))512 else:513 st = time.time()514 time.sleep(1)515 while time.time() - st < timeout:516 if self._cancel:517 break518 time.sleep(1)519#===============================================================================520# properties521#===============================================================================522 @property523 def filename(self):524 return os.path.join(self.root, self.name)525 @property526 def state(self):527 # states528 # 0=running529 # 1=canceled530 # 2=completed531 if self._cancel:532 return '1'533 if self._completed:534 return '2'535 return '0'536 def _get_text(self):537 return self._text538 def _set_text(self, t):539 self._text = t540 def _get_syntax_checked(self):541 return self._syntax_checked542 def _set_syntax_checked(self, v):543 self._syntax_checked = v544 def __str__(self):545 return self.name546if __name__ == '__main__':547 from src.helpers.logger_setup import logging_setup548 logging_setup('pscript')549# execute_script(t)550 from src.paths import paths551 p = PyScript(root=os.path.join(paths.scripts_dir, 'pyscripts'),552 path='test.py',553 _manager=DummyManager())554 p.execute()...
daemonprocess.py
Source:daemonprocess.py
1#!/usr/bin/env python22"""3Syncthing-GTK - DaemonProcess4Runs syncthing daemon process as subprocess of application5"""6from __future__ import unicode_literals7from gi.repository import Gio, GLib, GObject8from syncthing_gtk.tools import IS_WINDOWS9from collections import deque10import os, logging11log = logging.getLogger("DaemonProcess")12HAS_SUBPROCESS = hasattr(Gio, "Subprocess")13if IS_WINDOWS:14 # POpen is used on Windows15 from subprocess import Popen, PIPE, STARTUPINFO, STARTF_USESHOWWINDOW16 from syncthing_gtk.windows import WinPopenReader, nice_to_priority_class17elif not HAS_SUBPROCESS:18 # Gio.Subprocess is not available in Gio < 3.1219 from subprocess import Popen, PIPE20class DaemonProcess(GObject.GObject):21 __gsignals__ = {22 # line(text) - emitted when process outputs full line23 b"line" : (GObject.SIGNAL_RUN_FIRST, None, (object,)),24 # exit(code) - emitted when process exits25 b"exit" : (GObject.SIGNAL_RUN_FIRST, None, (int,)),26 # failed(exception) - emitted if process fails to start27 b"failed" : (GObject.SIGNAL_RUN_FIRST, None, (object,)),28 }29 SCROLLBACK_SIZE = 500 # Maximum number of output lines stored in memory30 PRIORITY_LOWEST = 1931 PRIORITY_LOW = 1032 PRIORITY_NORMAL = 033 PRIORITY_HIGH = -1034 PRIORITY_HIGHEST = -2035 36 def __init__(self, cmdline, priority=PRIORITY_NORMAL, max_cpus=0, env={}):37 """ cmdline should be list of arguments """38 GObject.GObject.__init__(self)39 self.cmdline = cmdline40 self.priority = priority41 self.env = { x:env[x] for x in env }42 self.env["STNORESTART"] = "1" # see syncthing --help43 self.env["STNOUPGRADE"] = "1"44 if max_cpus > 0:45 self.env["GOMAXPROCS"] = str(max_cpus)46 self._proc = None47 48 def start(self):49 for x in self.env:50 os.environ[x] = self.env[x]51 try:52 self._cancel = Gio.Cancellable()53 if IS_WINDOWS:54 # Windows55 sinfo = STARTUPINFO()56 sinfo.dwFlags = STARTF_USESHOWWINDOW57 sinfo.wShowWindow = 058 cflags = nice_to_priority_class(self.priority)59 self._proc = Popen(self.cmdline,60 stdin=PIPE, stdout=PIPE, stderr=PIPE,61 startupinfo=sinfo, creationflags=cflags)62 self._stdout = WinPopenReader(self._proc.stdout)63 self._check = GLib.timeout_add_seconds(1, self._cb_check_alive)64 elif HAS_SUBPROCESS:65 # New Gio66 flags = Gio.SubprocessFlags.STDOUT_PIPE | Gio.SubprocessFlags.STDERR_MERGE67 if self.priority == 0:68 self._proc = Gio.Subprocess.new(self.cmdline, flags)69 else:70 # I just really do hope that there is no distro w/out nice command71 self._proc = Gio.Subprocess.new([ "nice", "-n", "%s" % self.priority ] + self.cmdline, flags)72 self._proc.wait_check_async(None, self._cb_finished)73 self._stdout = self._proc.get_stdout_pipe()74 else:75 # Gio < 3.12 - Gio.Subprocess is missing :(76 if self.priority == 0:77 self._proc = Popen(self.cmdline, stdout=PIPE)78 else:79 # still hoping80 self._proc = Popen([ "nice", "-n", "%s" % self.priority ], stdout=PIPE)81 self._stdout = Gio.UnixInputStream.new(self._proc.stdout.fileno(), False)82 self._check = GLib.timeout_add_seconds(1, self._cb_check_alive)83 except Exception as e:84 # Startup failed85 self.emit("failed", e)86 return87 self._lines = deque([], DaemonProcess.SCROLLBACK_SIZE)88 self._buffer = ""89 self._stdout.read_bytes_async(256, 0, self._cancel, self._cb_read, ())90 91 def _cb_read(self, pipe, results, *a):92 """ Handler for read_bytes_async """93 try:94 response = pipe.read_bytes_finish(results)95 except Exception as e:96 if not self._cancel.is_cancelled():97 log.exception(e)98 GLib.idle_add(pipe.read_bytes_async, 256, 1, None, self._cb_read)99 return100 response = response.get_data().decode('utf-8')101 self._buffer = "%s%s" % (self._buffer, response)102 while "\n" in self._buffer:103 line, self._buffer = self._buffer.split("\n", 1)104 self._lines.append(line)105 self.emit('line', line)106 if not self._cancel.is_cancelled():107 GLib.idle_add(pipe.read_bytes_async, 256, 1, None, self._cb_read, ())108 109 def _cb_check_alive(self, *a):110 """111 Repeatedly check if process is still alive.112 Called only on windows113 """114 if self._proc == None:115 # Never started or killed really fast116 self.emit('exit', 1)117 self._cancel.cancel()118 if IS_WINDOWS: self._stdout.close()119 return False120 self._proc.poll()121 if self._proc.returncode is None:122 # Repeat until finished or canceled123 return (not self._cancel.is_cancelled())124 # Child just died :)125 self.emit('exit', self._proc.returncode)126 self._cancel.cancel()127 if IS_WINDOWS: self._stdout.close()128 return False129 130 def _cb_finished(self, proc, results):131 """132 Callback for wait_check_async.133 With Gio < 3.12, timer and _cb_check_alive is used.134 """135 try:136 proc.wait_check_finish(results)137 log.info("Subprocess finished with code %s", proc.get_exit_status())138 except GLib.GError:139 # Exited with exit code140 log.info("Subprocess exited with code %s", proc.get_exit_status())141 if proc.get_exit_status() == 127:142 # Command not found143 self.emit("failed", Exception("Command not found"))144 else:145 self.emit('exit', proc.get_exit_status())146 if IS_WINDOWS: self._stdout.close()147 self._cancel.cancel()148 149 def terminate(self):150 """ Terminates process (sends SIGTERM) """151 if not self._proc is None:152 if IS_WINDOWS:153 # Windows154 self._proc.terminate()155 elif HAS_SUBPROCESS:156 # Gio.Subprocess157 self._proc.send_signal(15)158 else:159 # subprocess.Popen160 self._proc.terminate()161 self._proc = None162 if IS_WINDOWS: self._stdout.close()163 self._cancel.cancel()164 165 def kill(self):166 """ Kills process (sends SIGTERM) """167 if not self._proc is None:168 if IS_WINDOWS:169 # Windows - can't actually kill170 self._proc.terminate()171 elif HAS_SUBPROCESS:172 # Gio.Subprocess173 self._proc.force_exit()174 else:175 # subprocess.Popen176 self._proc.kill()177 self._proc = None178 if IS_WINDOWS: self._stdout.close()179 self._cancel.cancel()180 181 def get_output(self):182 """ Returns process output as iterable list of lines """183 return self._lines184 185 def get_commandline(self):186 """ Returns commandline used to start process """...
scheduleperiodic.py
Source:scheduleperiodic.py
1from rx.disposables import SerialDisposable2class SchedulePeriodic(object):3 """Scheduler with support for running periodic tasks. This type of4 scheduler can be used to run timers more efficiently instead of using5 recursive scheduling."""6 def __init__(self, scheduler, period, action, state=None):7 """8 Keyword arguments:9 state -- Initial state passed to the action upon the first iteration.10 period -- Period for running the work periodically.11 action -- Action to be executed, potentially updating the state."""12 self._scheduler = scheduler13 self._state = state14 self._period = period15 self._action = action16 self._cancel = SerialDisposable()17 def tick(self, scheduler, command):18 self._cancel.disposable = self._scheduler.schedule_relative(self._period, self.tick, 0)19 try:20 new_state = self._action(self._state)21 except Exception:22 self._cancel.dispose()23 raise24 else:25 if new_state is not None: # Update state if other than None26 self._state = new_state27 def start(self):28 """Returns the disposable object used to cancel the scheduled recurring29 action (best effort).30 """31 self._cancel.disposable = self._scheduler.schedule_relative(self._period, self.tick, 0)...
Automation Testing Tutorials
Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.
LambdaTest Learning Hubs:
- JUnit Tutorial
- TestNG Tutorial
- Webdriver Tutorial
- WebDriverIO Tutorial
- Protractor Tutorial
- Selenium 4 Tutorial
- Jenkins Tutorial
- NUnit Tutorial
- Jest Tutorial
- Playwright Tutorial
- Cypress Tutorial
- PyTest Tutorial
YouTube
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Run stestr automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
