254 lines
9.7 KiB
Python
254 lines
9.7 KiB
Python
# Copyright 2018 The Armada Authors.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
from oslo_log import log as logging
|
|
import time
|
|
import yaml
|
|
|
|
from armada import const
|
|
from armada.exceptions import armada_exceptions
|
|
from armada.handlers.chartbuilder import ChartBuilder
|
|
from armada.handlers.release_diff import ReleaseDiff
|
|
from armada.handlers.test import Test
|
|
from armada.handlers.wait import ChartWait
|
|
from armada.exceptions import tiller_exceptions
|
|
import armada.utils.release as r
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class ChartDeploy(object):
|
|
|
|
def __init__(self, disable_update_pre, disable_update_post, dry_run,
|
|
k8s_wait_attempts, k8s_wait_attempt_sleep, timeout, tiller):
|
|
self.disable_update_pre = disable_update_pre
|
|
self.disable_update_post = disable_update_post
|
|
self.dry_run = dry_run
|
|
self.k8s_wait_attempts = k8s_wait_attempts
|
|
self.k8s_wait_attempt_sleep = k8s_wait_attempt_sleep
|
|
self.timeout = timeout
|
|
self.tiller = tiller
|
|
|
|
def execute(self, chart, cg_test_all_charts, prefix, known_releases):
|
|
namespace = chart.get('namespace')
|
|
release = chart.get('release')
|
|
release_name = r.release_prefixer(prefix, release)
|
|
LOG.info('Processing Chart, release=%s', release_name)
|
|
|
|
values = chart.get('values', {})
|
|
pre_actions = {}
|
|
post_actions = {}
|
|
|
|
result = {}
|
|
|
|
protected = chart.get('protected', {})
|
|
p_continue = protected.get('continue_processing', False)
|
|
|
|
old_release = self.find_chart_release(known_releases, release_name)
|
|
|
|
status = None
|
|
if old_release:
|
|
status = r.get_release_status(old_release)
|
|
|
|
if status not in [const.STATUS_FAILED, const.STATUS_DEPLOYED]:
|
|
raise armada_exceptions.UnexpectedReleaseStatusException(
|
|
release_name, status)
|
|
|
|
chart_wait = ChartWait(
|
|
self.tiller.k8s,
|
|
release_name,
|
|
chart,
|
|
namespace,
|
|
k8s_wait_attempts=self.k8s_wait_attempts,
|
|
k8s_wait_attempt_sleep=self.k8s_wait_attempt_sleep,
|
|
timeout=self.timeout)
|
|
|
|
native_wait_enabled = chart_wait.is_native_enabled()
|
|
|
|
# Begin Chart timeout deadline
|
|
deadline = time.time() + chart_wait.get_timeout()
|
|
|
|
chartbuilder = ChartBuilder(chart)
|
|
new_chart = chartbuilder.get_helm_chart()
|
|
|
|
# Check for existing FAILED release, and purge
|
|
if status == const.STATUS_FAILED:
|
|
LOG.info('Purging FAILED release %s before deployment.',
|
|
release_name)
|
|
if protected:
|
|
if p_continue:
|
|
LOG.warn(
|
|
'Release %s is `protected`, '
|
|
'continue_processing=True. Operator must '
|
|
'handle FAILED release manually.', release_name)
|
|
result['protected'] = release_name
|
|
return result
|
|
else:
|
|
LOG.error(
|
|
'Release %s is `protected`, '
|
|
'continue_processing=False.', release_name)
|
|
raise armada_exceptions.ProtectedReleaseException(
|
|
release_name)
|
|
else:
|
|
# Purge the release
|
|
self.tiller.uninstall_release(release_name)
|
|
result['purge'] = release_name
|
|
|
|
# TODO(mark-burnett): It may be more robust to directly call
|
|
# tiller status to decide whether to install/upgrade rather
|
|
# than checking for list membership.
|
|
if status == const.STATUS_DEPLOYED:
|
|
|
|
# indicate to the end user what path we are taking
|
|
LOG.info("Existing release %s found in namespace %s", release_name,
|
|
namespace)
|
|
|
|
# extract the installed chart and installed values from the
|
|
# latest release so we can compare to the intended state
|
|
old_chart = old_release.chart
|
|
old_values_string = old_release.config.raw
|
|
|
|
upgrade = chart.get('upgrade', {})
|
|
disable_hooks = upgrade.get('no_hooks', False)
|
|
options = upgrade.get('options', {})
|
|
force = options.get('force', False)
|
|
recreate_pods = options.get('recreate_pods', False)
|
|
|
|
if upgrade:
|
|
upgrade_pre = upgrade.get('pre', {})
|
|
upgrade_post = upgrade.get('post', {})
|
|
|
|
if not self.disable_update_pre and upgrade_pre:
|
|
pre_actions = upgrade_pre
|
|
|
|
if not self.disable_update_post and upgrade_post:
|
|
LOG.warning('Post upgrade actions are ignored by Armada'
|
|
'and will not affect deployment.')
|
|
post_actions = upgrade_post
|
|
|
|
try:
|
|
old_values = yaml.safe_load(old_values_string)
|
|
except yaml.YAMLError:
|
|
chart_desc = '{} (previously deployed)'.format(
|
|
old_chart.metadata.name)
|
|
raise armada_exceptions.\
|
|
InvalidOverrideValuesYamlException(chart_desc)
|
|
|
|
LOG.info('Checking for updates to chart release inputs.')
|
|
diff = self.get_diff(old_chart, old_values, new_chart, values)
|
|
|
|
if not diff:
|
|
LOG.info("Found no updates to chart release inputs")
|
|
else:
|
|
LOG.info("Found updates to chart release inputs")
|
|
LOG.debug("%s", diff)
|
|
result['diff'] = {chart['release']: str(diff)}
|
|
|
|
# TODO(MarshM): Add tiller dry-run before upgrade and
|
|
# consider deadline impacts
|
|
|
|
# do actual update
|
|
timer = int(round(deadline - time.time()))
|
|
LOG.info(
|
|
"Upgrading release %s in namespace %s, wait=%s, "
|
|
"timeout=%ss", release_name, namespace,
|
|
native_wait_enabled, timer)
|
|
tiller_result = self.tiller.update_release(
|
|
new_chart,
|
|
release_name,
|
|
namespace,
|
|
pre_actions=pre_actions,
|
|
post_actions=post_actions,
|
|
disable_hooks=disable_hooks,
|
|
values=yaml.safe_dump(values),
|
|
wait=native_wait_enabled,
|
|
timeout=timer,
|
|
force=force,
|
|
recreate_pods=recreate_pods)
|
|
|
|
LOG.info('Upgrade completed with results from Tiller: %s',
|
|
tiller_result.__dict__)
|
|
result['upgrade'] = release_name
|
|
else:
|
|
timer = int(round(deadline - time.time()))
|
|
LOG.info(
|
|
"Installing release %s in namespace %s, wait=%s, "
|
|
"timeout=%ss", release_name, namespace, native_wait_enabled,
|
|
timer)
|
|
tiller_result = self.tiller.install_release(
|
|
new_chart,
|
|
release_name,
|
|
namespace,
|
|
values=yaml.safe_dump(values),
|
|
wait=native_wait_enabled,
|
|
timeout=timer)
|
|
|
|
LOG.info('Install completed with results from Tiller: %s',
|
|
tiller_result.__dict__)
|
|
result['install'] = release_name
|
|
|
|
# Wait
|
|
timer = int(round(deadline - time.time()))
|
|
chart_wait.wait(timer)
|
|
|
|
# Test
|
|
just_deployed = ('install' in result) or ('upgrade' in result)
|
|
last_test_passed = old_release and r.get_last_test_result(old_release)
|
|
|
|
test_values = chart.get('test')
|
|
test_handler = Test(
|
|
release_name,
|
|
self.tiller,
|
|
cg_test_charts=cg_test_all_charts,
|
|
test_values=test_values)
|
|
|
|
run_test = test_handler.test_enabled and (just_deployed or
|
|
not last_test_passed)
|
|
if run_test:
|
|
timer = int(round(deadline - time.time()))
|
|
self._test_chart(release_name, timer, test_handler)
|
|
|
|
return result
|
|
|
|
def _test_chart(self, release_name, timeout, test_handler):
|
|
if self.dry_run:
|
|
LOG.info(
|
|
'Skipping test during `dry-run`, would have tested '
|
|
'release=%s with timeout %ss.', release_name, timeout)
|
|
return True
|
|
|
|
if timeout <= 0:
|
|
reason = ('Timeout expired before testing '
|
|
'release %s' % release_name)
|
|
LOG.error(reason)
|
|
raise armada_exceptions.ArmadaTimeoutException(reason)
|
|
|
|
success = test_handler.test_release_for_success(timeout=timeout)
|
|
if not success:
|
|
raise tiller_exceptions.TestFailedException(release_name)
|
|
|
|
def get_diff(self, old_chart, old_values, new_chart, values):
|
|
return ReleaseDiff(old_chart, old_values, new_chart, values).get_diff()
|
|
|
|
def find_chart_release(self, known_releases, release_name):
|
|
'''
|
|
Find a release given a list of known_releases and a release name
|
|
'''
|
|
for release in known_releases:
|
|
if release.name == release_name:
|
|
return release
|
|
LOG.info("known: %s, release_name: %s",
|
|
list(map(lambda r: r.name, known_releases)), release_name)
|
|
return None
|