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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121 lines
4.3 KiB
121 lines
4.3 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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"""Helpers to run docker instances as jobs.""" |
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import jobset |
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import tempfile |
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import time |
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import uuid |
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import os |
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import subprocess |
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_DEVNULL = open(os.devnull, 'w') |
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def random_name(base_name): |
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"""Randomizes given base name.""" |
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return '%s_%s' % (base_name, uuid.uuid4()) |
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def docker_kill(cid): |
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"""Kills a docker container. Returns True if successful.""" |
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return subprocess.call(['docker','kill', str(cid)], |
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stdin=subprocess.PIPE, |
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stdout=_DEVNULL, |
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stderr=subprocess.STDOUT) == 0 |
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def docker_mapped_port(cid, port, timeout_seconds=15): |
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"""Get port mapped to internal given internal port for given container.""" |
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started = time.time() |
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while time.time() - started < timeout_seconds: |
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try: |
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output = subprocess.check_output('docker port %s %s' % (cid, port), |
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stderr=_DEVNULL, |
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shell=True) |
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return int(output.split(':', 2)[1]) |
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except subprocess.CalledProcessError as e: |
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pass |
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raise Exception('Failed to get exposed port %s for container %s.' % |
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(port, cid)) |
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def finish_jobs(jobs): |
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"""Kills given docker containers and waits for corresponding jobs to finish""" |
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for job in jobs: |
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job.kill(suppress_failure=True) |
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while any(job.is_running() for job in jobs): |
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time.sleep(1) |
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def image_exists(image): |
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"""Returns True if given docker image exists.""" |
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return subprocess.call(['docker','inspect', image], |
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stdin=subprocess.PIPE, |
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stdout=_DEVNULL, |
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stderr=subprocess.STDOUT) == 0 |
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def remove_image(image, skip_nonexistent=False, max_retries=10): |
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"""Attempts to remove docker image with retries.""" |
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if skip_nonexistent and not image_exists(image): |
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return True |
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for attempt in range(0, max_retries): |
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if subprocess.call(['docker','rmi', '-f', image], |
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stdin=subprocess.PIPE, |
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stdout=_DEVNULL, |
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stderr=subprocess.STDOUT) == 0: |
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return True |
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time.sleep(2) |
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print 'Failed to remove docker image %s' % image |
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return False |
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class DockerJob: |
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"""Encapsulates a job""" |
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def __init__(self, spec): |
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self._spec = spec |
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self._job = jobset.Job(spec, bin_hash=None, newline_on_success=True, travis=True, add_env={}) |
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self._container_name = spec.container_name |
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def mapped_port(self, port): |
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return docker_mapped_port(self._container_name, port) |
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def kill(self, suppress_failure=False): |
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"""Sends kill signal to the container.""" |
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if suppress_failure: |
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self._job.suppress_failure_message() |
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return docker_kill(self._container_name) |
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def is_running(self): |
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"""Polls a job and returns True if given job is still running.""" |
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return self._job.state(jobset.NoCache()) == jobset._RUNNING
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