mirror of https://github.com/grpc/grpc.git
The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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463 lines
14 KiB
463 lines
14 KiB
# Copyright 2015, Google Inc. |
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# All rights reserved. |
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# |
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# Redistribution and use in source and binary forms, with or without |
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# modification, are permitted provided that the following conditions are |
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# met: |
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# |
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# * Redistributions of source code must retain the above copyright |
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# notice, this list of conditions and the following disclaimer. |
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# * Redistributions in binary form must reproduce the above |
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# copyright notice, this list of conditions and the following disclaimer |
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# in the documentation and/or other materials provided with the |
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# distribution. |
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# * Neither the name of Google Inc. nor the names of its |
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# contributors may be used to endorse or promote products derived from |
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# this software without specific prior written permission. |
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# |
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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"""Run a group of subprocesses and then finish.""" |
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from __future__ import print_function |
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import multiprocessing |
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import os |
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import platform |
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import re |
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import signal |
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import subprocess |
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import sys |
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import tempfile |
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import time |
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# cpu cost measurement |
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measure_cpu_costs = False |
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_DEFAULT_MAX_JOBS = 16 * multiprocessing.cpu_count() |
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_MAX_RESULT_SIZE = 8192 |
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def sanitized_environment(env): |
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sanitized = {} |
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for key, value in env.items(): |
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sanitized[str(key).encode()] = str(value).encode() |
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return sanitized |
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def platform_string(): |
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if platform.system() == 'Windows': |
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return 'windows' |
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elif platform.system()[:7] == 'MSYS_NT': |
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return 'windows' |
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elif platform.system() == 'Darwin': |
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return 'mac' |
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elif platform.system() == 'Linux': |
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return 'linux' |
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else: |
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return 'posix' |
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# setup a signal handler so that signal.pause registers 'something' |
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# when a child finishes |
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# not using futures and threading to avoid a dependency on subprocess32 |
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if platform_string() == 'windows': |
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pass |
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else: |
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have_alarm = False |
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def alarm_handler(unused_signum, unused_frame): |
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global have_alarm |
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have_alarm = False |
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signal.signal(signal.SIGCHLD, lambda unused_signum, unused_frame: None) |
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signal.signal(signal.SIGALRM, alarm_handler) |
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_SUCCESS = object() |
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_FAILURE = object() |
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_RUNNING = object() |
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_KILLED = object() |
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_COLORS = { |
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'red': [ 31, 0 ], |
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'green': [ 32, 0 ], |
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'yellow': [ 33, 0 ], |
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'lightgray': [ 37, 0], |
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'gray': [ 30, 1 ], |
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'purple': [ 35, 0 ], |
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} |
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_BEGINNING_OF_LINE = '\x1b[0G' |
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_CLEAR_LINE = '\x1b[2K' |
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_TAG_COLOR = { |
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'FAILED': 'red', |
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'FLAKE': 'purple', |
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'TIMEOUT_FLAKE': 'purple', |
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'WARNING': 'yellow', |
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'TIMEOUT': 'red', |
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'PASSED': 'green', |
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'START': 'gray', |
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'WAITING': 'yellow', |
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'SUCCESS': 'green', |
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'IDLE': 'gray', |
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} |
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def message(tag, msg, explanatory_text=None, do_newline=False): |
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if message.old_tag == tag and message.old_msg == msg and not explanatory_text: |
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return |
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message.old_tag = tag |
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message.old_msg = msg |
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try: |
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if platform_string() == 'windows' or not sys.stdout.isatty(): |
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if explanatory_text: |
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print(explanatory_text) |
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print('%s: %s' % (tag, msg)) |
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return |
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sys.stdout.write('%s%s%s\x1b[%d;%dm%s\x1b[0m: %s%s' % ( |
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_BEGINNING_OF_LINE, |
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_CLEAR_LINE, |
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'\n%s' % explanatory_text if explanatory_text is not None else '', |
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_COLORS[_TAG_COLOR[tag]][1], |
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_COLORS[_TAG_COLOR[tag]][0], |
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tag, |
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msg, |
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'\n' if do_newline or explanatory_text is not None else '')) |
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sys.stdout.flush() |
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except: |
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pass |
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message.old_tag = '' |
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message.old_msg = '' |
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def which(filename): |
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if '/' in filename: |
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return filename |
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for path in os.environ['PATH'].split(os.pathsep): |
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if os.path.exists(os.path.join(path, filename)): |
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return os.path.join(path, filename) |
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raise Exception('%s not found' % filename) |
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class JobSpec(object): |
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"""Specifies what to run for a job.""" |
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def __init__(self, cmdline, shortname=None, environ=None, |
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cwd=None, shell=False, timeout_seconds=5*60, flake_retries=0, |
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timeout_retries=0, kill_handler=None, cpu_cost=1.0, |
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verbose_success=False): |
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""" |
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Arguments: |
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cmdline: a list of arguments to pass as the command line |
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environ: a dictionary of environment variables to set in the child process |
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kill_handler: a handler that will be called whenever job.kill() is invoked |
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cpu_cost: number of cores per second this job needs |
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""" |
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if environ is None: |
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environ = {} |
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self.cmdline = cmdline |
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self.environ = environ |
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self.shortname = cmdline[0] if shortname is None else shortname |
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self.cwd = cwd |
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self.shell = shell |
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self.timeout_seconds = timeout_seconds |
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self.flake_retries = flake_retries |
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self.timeout_retries = timeout_retries |
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self.kill_handler = kill_handler |
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self.cpu_cost = cpu_cost |
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self.verbose_success = verbose_success |
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def identity(self): |
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return '%r %r' % (self.cmdline, self.environ) |
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def __hash__(self): |
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return hash(self.identity()) |
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def __cmp__(self, other): |
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return self.identity() == other.identity() |
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def __repr__(self): |
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return 'JobSpec(shortname=%s, cmdline=%s)' % (self.shortname, self.cmdline) |
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class JobResult(object): |
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def __init__(self): |
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self.state = 'UNKNOWN' |
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self.returncode = -1 |
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self.elapsed_time = 0 |
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self.num_failures = 0 |
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self.retries = 0 |
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self.message = '' |
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class Job(object): |
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"""Manages one job.""" |
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def __init__(self, spec, newline_on_success, travis, add_env): |
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self._spec = spec |
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self._newline_on_success = newline_on_success |
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self._travis = travis |
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self._add_env = add_env.copy() |
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self._retries = 0 |
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self._timeout_retries = 0 |
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self._suppress_failure_message = False |
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message('START', spec.shortname, do_newline=self._travis) |
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self.result = JobResult() |
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self.start() |
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def GetSpec(self): |
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return self._spec |
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def start(self): |
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self._tempfile = tempfile.TemporaryFile() |
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env = dict(os.environ) |
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env.update(self._spec.environ) |
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env.update(self._add_env) |
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env = sanitized_environment(env) |
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self._start = time.time() |
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cmdline = self._spec.cmdline |
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if measure_cpu_costs: |
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cmdline = ['time', '--portability'] + cmdline |
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try_start = lambda: subprocess.Popen(args=cmdline, |
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stderr=subprocess.STDOUT, |
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stdout=self._tempfile, |
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cwd=self._spec.cwd, |
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shell=self._spec.shell, |
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env=env) |
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delay = 0.3 |
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for i in range(0, 4): |
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try: |
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self._process = try_start() |
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break |
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except OSError: |
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message('WARNING', 'Failed to start %s, retrying in %f seconds' % (self._spec.shortname, delay)) |
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time.sleep(delay) |
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delay *= 2 |
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else: |
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self._process = try_start() |
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self._state = _RUNNING |
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def state(self): |
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"""Poll current state of the job. Prints messages at completion.""" |
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def stdout(self=self): |
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self._tempfile.seek(0) |
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stdout = self._tempfile.read() |
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self.result.message = stdout[-_MAX_RESULT_SIZE:] |
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return stdout |
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if self._state == _RUNNING and self._process.poll() is not None: |
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elapsed = time.time() - self._start |
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self.result.elapsed_time = elapsed |
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if self._process.returncode != 0: |
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if self._retries < self._spec.flake_retries: |
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message('FLAKE', '%s [ret=%d, pid=%d]' % ( |
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self._spec.shortname, self._process.returncode, self._process.pid), |
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stdout(), do_newline=True) |
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self._retries += 1 |
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self.result.num_failures += 1 |
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self.result.retries = self._timeout_retries + self._retries |
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self.start() |
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else: |
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self._state = _FAILURE |
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if not self._suppress_failure_message: |
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message('FAILED', '%s [ret=%d, pid=%d]' % ( |
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self._spec.shortname, self._process.returncode, self._process.pid), |
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stdout(), do_newline=True) |
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self.result.state = 'FAILED' |
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self.result.num_failures += 1 |
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self.result.returncode = self._process.returncode |
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else: |
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self._state = _SUCCESS |
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measurement = '' |
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if measure_cpu_costs: |
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m = re.search(r'real ([0-9.]+)\nuser ([0-9.]+)\nsys ([0-9.]+)', stdout()) |
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real = float(m.group(1)) |
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user = float(m.group(2)) |
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sys = float(m.group(3)) |
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if real > 0.5: |
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cores = (user + sys) / real |
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measurement = '; cpu_cost=%.01f; estimated=%.01f' % (cores, self._spec.cpu_cost) |
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message('PASSED', '%s [time=%.1fsec; retries=%d:%d%s]' % ( |
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self._spec.shortname, elapsed, self._retries, self._timeout_retries, measurement), |
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stdout() if self._spec.verbose_success else None, |
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do_newline=self._newline_on_success or self._travis) |
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self.result.state = 'PASSED' |
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elif (self._state == _RUNNING and |
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self._spec.timeout_seconds is not None and |
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time.time() - self._start > self._spec.timeout_seconds): |
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if self._timeout_retries < self._spec.timeout_retries: |
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message('TIMEOUT_FLAKE', '%s [pid=%d]' % (self._spec.shortname, self._process.pid), stdout(), do_newline=True) |
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self._timeout_retries += 1 |
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self.result.num_failures += 1 |
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self.result.retries = self._timeout_retries + self._retries |
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if self._spec.kill_handler: |
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self._spec.kill_handler(self) |
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self._process.terminate() |
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self.start() |
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else: |
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message('TIMEOUT', '%s [pid=%d]' % (self._spec.shortname, self._process.pid), stdout(), do_newline=True) |
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self.kill() |
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self.result.state = 'TIMEOUT' |
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self.result.num_failures += 1 |
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return self._state |
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def kill(self): |
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if self._state == _RUNNING: |
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self._state = _KILLED |
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if self._spec.kill_handler: |
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self._spec.kill_handler(self) |
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self._process.terminate() |
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def suppress_failure_message(self): |
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self._suppress_failure_message = True |
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class Jobset(object): |
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"""Manages one run of jobs.""" |
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def __init__(self, check_cancelled, maxjobs, newline_on_success, travis, |
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stop_on_failure, add_env): |
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self._running = set() |
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self._check_cancelled = check_cancelled |
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self._cancelled = False |
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self._failures = 0 |
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self._completed = 0 |
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self._maxjobs = maxjobs |
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self._newline_on_success = newline_on_success |
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self._travis = travis |
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self._stop_on_failure = stop_on_failure |
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self._add_env = add_env |
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self.resultset = {} |
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self._remaining = None |
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self._start_time = time.time() |
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def set_remaining(self, remaining): |
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self._remaining = remaining |
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def get_num_failures(self): |
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return self._failures |
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def cpu_cost(self): |
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c = 0 |
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for job in self._running: |
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c += job._spec.cpu_cost |
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return c |
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def start(self, spec): |
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"""Start a job. Return True on success, False on failure.""" |
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while True: |
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if self.cancelled(): return False |
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current_cpu_cost = self.cpu_cost() |
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if current_cpu_cost == 0: break |
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if current_cpu_cost + spec.cpu_cost <= self._maxjobs: break |
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self.reap() |
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if self.cancelled(): return False |
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job = Job(spec, |
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self._newline_on_success, |
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self._travis, |
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self._add_env) |
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self._running.add(job) |
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if job.GetSpec().shortname not in self.resultset: |
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self.resultset[job.GetSpec().shortname] = [] |
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return True |
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def reap(self): |
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"""Collect the dead jobs.""" |
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while self._running: |
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dead = set() |
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for job in self._running: |
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st = job.state() |
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if st == _RUNNING: continue |
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if st == _FAILURE or st == _KILLED: |
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self._failures += 1 |
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if self._stop_on_failure: |
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self._cancelled = True |
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for job in self._running: |
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job.kill() |
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dead.add(job) |
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break |
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for job in dead: |
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self._completed += 1 |
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self.resultset[job.GetSpec().shortname].append(job.result) |
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self._running.remove(job) |
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if dead: return |
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if (not self._travis): |
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rstr = '' if self._remaining is None else '%d queued, ' % self._remaining |
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if self._remaining is not None and self._completed > 0: |
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now = time.time() |
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sofar = now - self._start_time |
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remaining = sofar / self._completed * (self._remaining + len(self._running)) |
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rstr = 'ETA %.1f sec; %s' % (remaining, rstr) |
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message('WAITING', '%s%d jobs running, %d complete, %d failed' % ( |
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rstr, len(self._running), self._completed, self._failures)) |
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if platform_string() == 'windows': |
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time.sleep(0.1) |
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else: |
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global have_alarm |
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if not have_alarm: |
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have_alarm = True |
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signal.alarm(10) |
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signal.pause() |
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def cancelled(self): |
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"""Poll for cancellation.""" |
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if self._cancelled: return True |
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if not self._check_cancelled(): return False |
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for job in self._running: |
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job.kill() |
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self._cancelled = True |
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return True |
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def finish(self): |
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while self._running: |
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if self.cancelled(): pass # poll cancellation |
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self.reap() |
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return not self.cancelled() and self._failures == 0 |
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def _never_cancelled(): |
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return False |
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def tag_remaining(xs): |
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staging = [] |
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for x in xs: |
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staging.append(x) |
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if len(staging) > 5000: |
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yield (staging.pop(0), None) |
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n = len(staging) |
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for i, x in enumerate(staging): |
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yield (x, n - i - 1) |
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def run(cmdlines, |
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check_cancelled=_never_cancelled, |
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maxjobs=None, |
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newline_on_success=False, |
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travis=False, |
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infinite_runs=False, |
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stop_on_failure=False, |
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add_env={}): |
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js = Jobset(check_cancelled, |
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maxjobs if maxjobs is not None else _DEFAULT_MAX_JOBS, |
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newline_on_success, travis, stop_on_failure, add_env) |
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for cmdline, remaining in tag_remaining(cmdlines): |
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if not js.start(cmdline): |
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break |
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if remaining is not None: |
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js.set_remaining(remaining) |
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js.finish() |
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return js.get_num_failures(), js.resultset
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