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import os
import os.path
import random
import tarfile
import tempfile
import time
import docker
import pytest
def make_tree(dirs, files):
base = tempfile.mkdtemp()
for path in dirs:
os.makedirs(os.path.join(base, path))
for path in files:
with open(os.path.join(base, path), 'w') as f:
f.write("content")
return base
def simple_tar(path):
f = tempfile.NamedTemporaryFile()
t = tarfile.open(mode='w', fileobj=f)
abs_path = os.path.abspath(path)
t.add(abs_path, arcname=os.path.basename(path), recursive=False)
t.close()
f.seek(0)
return f
def untar_file(tardata, filename):
with tarfile.open(mode='r', fileobj=tardata) as t:
f = t.extractfile(filename)
result = f.read()
f.close()
return result
def requires_api_version(version):
return pytest.mark.skipif(
docker.utils.version_lt(
docker.constants.DEFAULT_DOCKER_API_VERSION, version
),
reason="API version is too low (< {0})".format(version)
)
def wait_on_condition(condition, delay=0.1, timeout=40):
start_time = time.time()
while not condition():
if time.time() - start_time > timeout:
raise AssertionError("Timeout: %s" % condition)
time.sleep(delay)
def random_name():
return u'dockerpytest_{0:x}'.format(random.getrandbits(64))
def force_leave_swarm(client):
"""Actually force leave a Swarm. There seems to be a bug in Swarm that
occasionally throws "context deadline exceeded" errors when leaving."""
while True:
try:
return client.swarm.leave(force=True)
except docker.errors.APIError as e:
if e.explanation == "context deadline exceeded":
continue
else:
raise
|
