docker_swarm_service: Enable tests (#51170)

* Enable tests

* Comment fixes

* Try lowering timeouts

* Comment fix

* Comment fix

* Comment fix

* Add a pause to let service update

* Fix comment

* Disable dns_search tests

* Disable dns_servers test

* Fix comment

* Fix comment

* Fix comment

* Fix comment

* Fix comment

* Fix comment

* Fix comment

* Revert "Disable dns_servers test"

This reverts commit 763e9da716b78f4986f313b3ba1ab98faacb742e.

* Revert "Disable dns_search tests"

This reverts commit 2859e4e3a5ebdca078de84d821bb53bbdf967dfd.

* Revert "Add a pause to let service update"

This reverts commit e990dfae1a62e9a42b07960819818bc75fd04427.

* Revert "Try lowering timeouts"

This reverts commit 1617772de81ecef0e560b38c7564646ec3874c3c.

* Ensure that services are running while testing

* Retry tasks on update out of sequence error

* Remove unnecessary check for APIError.explanation

Co-Authored-By: hannseman <hannes@5monkeys.se>

* Ignore errors when tearing down test suite

* Retry with a loop instead of tail recursion

* Initialize self.diff_trace in run

* Add change log fragment

* Actually raise error

* Add unit test for retrying

* Lint

* Change to bugfix

* Remove whitespace

* Mock docker dependency

* Use download.fedoraproject.org

* Revert "Use download.fedoraproject.org"

This reverts commit 5931791f7c.
pull/51728/head
Hannes Ljungberg 6 years ago committed by John R Barker
parent d8d4dc3f52
commit 4a5d38b55a

@ -0,0 +1,2 @@
bugfixes:
- "docker_swarm_service - When docker fails to update a container with an ``update out of sequence`` error, the module will retry to update up to two times, and only fail if all three attempts do not succeed."

@ -542,7 +542,7 @@ try:
from distutils.version import LooseVersion
from docker import types
from docker.utils import parse_repository_tag
from docker.errors import DockerException
from docker.errors import APIError, DockerException
except Exception:
# missing docker-py handled in ansible.module_utils.docker
pass
@ -1209,9 +1209,11 @@ class DockerServiceManager():
def __init__(self, client):
self.client = client
self.diff_tracker = DifferenceTracker()
self.retries = 2
self.diff_tracker = None
def run(self):
self.diff_tracker = DifferenceTracker()
module = self.client.module
image = module.params['image']
@ -1294,6 +1296,19 @@ class DockerServiceManager():
return msg, changed, rebuilt, differences.get_legacy_docker_diffs(), facts
def run_safe(self):
while True:
try:
return self.run()
except APIError as e:
# Sometimes Version.Index will have changed between an inspect and
# update. If this is encountered we'll retry the update.
if self.retries > 0 and 'update out of sequence' in str(e.explanation):
self.retries -= 1
time.sleep(1)
else:
raise
def _detect_publish_mode_usage(client):
for publish_def in client.module.params['publish']:
@ -1385,7 +1400,7 @@ def main():
)
dsm = DockerServiceManager(client)
msg, changed, rebuilt, changes, facts = dsm.run()
msg, changed, rebuilt, changes, facts = dsm.run_safe()
results = dict(
msg=msg,

@ -3,4 +3,3 @@ skip/osx
skip/freebsd
destructive
skip/rhel8.0
unstable

@ -0,0 +1,59 @@
import pytest
class APIErrorMock(Exception):
def __init__(self, message, response=None, explanation=None):
self.message = message
self.response = response
self.explanation = explanation
@pytest.fixture(autouse=True)
def docker_module_mock(mocker):
docker_module_mock = mocker.MagicMock()
docker_utils_module_mock = mocker.MagicMock()
docker_errors_module_mock = mocker.MagicMock()
docker_errors_module_mock.APIError = APIErrorMock
mock_modules = {
'docker': docker_module_mock,
'docker.utils': docker_utils_module_mock,
'docker.errors': docker_errors_module_mock,
}
return mocker.patch.dict('sys.modules', **mock_modules)
@pytest.fixture(autouse=True)
def docker_swarm_service():
from ansible.modules.cloud.docker import docker_swarm_service
return docker_swarm_service
def test_retry_on_out_of_sequence_error(mocker, docker_swarm_service):
run_mock = mocker.MagicMock(
side_effect=APIErrorMock(
message='',
response=None,
explanation='rpc error: code = Unknown desc = update out of sequence',
)
)
manager = docker_swarm_service.DockerServiceManager(client=None)
manager.run = run_mock
with pytest.raises(APIErrorMock):
manager.run_safe()
assert run_mock.call_count == 3
def test_no_retry_on_general_api_error(mocker, docker_swarm_service):
run_mock = mocker.MagicMock(
side_effect=APIErrorMock(
message='',
response=None,
explanation='some error',
)
)
manager = docker_swarm_service.DockerServiceManager(client=None)
manager.run = run_mock
with pytest.raises(APIErrorMock):
manager.run_safe()
assert run_mock.call_count == 1
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