208 lines
7.2 KiB
Python
208 lines
7.2 KiB
Python
# Copyright 2020 The Armada Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import click
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from oslo_config import cfg
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import prometheus_client
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import yaml
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from armada.cli import CliAction
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from armada.exceptions.source_exceptions import InvalidPathException
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from armada.handlers import metrics
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from armada.handlers.chart_deploy import ChartDeploy
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from armada.handlers.chart_download import ChartDownload
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from armada.handlers.document import ReferenceResolver
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from armada.handlers.lock import lock_and_thread
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from armada.handlers.manifest import Chart
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from armada.handlers.tiller import Tiller
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CONF = cfg.CONF
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@click.group()
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def apply_chart():
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""" Apply chart to cluster
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"""
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DESC = """
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This command installs and updates an Armada chart.
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[LOCATION] must be a relative path to Armada Chart or a reference
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to an Armada Chart kubernetes CR which has the same format, except as
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noted in the v2 document authoring documentation.
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To install or upgrade a chart, run:
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\b
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$ armada apply_chart --release-prefix=armada my-chart.yaml
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$ armada apply_chart --release-prefix=armada \
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kube:armadacharts/my-namespace/my-chart
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"""
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SHORT_DESC = "Command deploys a chart."
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@apply_chart.command(name='apply_chart', help=DESC, short_help=SHORT_DESC)
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@click.argument('location')
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@click.option(
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'--release-prefix',
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help="Prefix to prepend to chart release name.",
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required=True)
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@click.option(
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'--disable-update-post',
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help="Disable post-update Tiller operations.",
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is_flag=True)
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@click.option(
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'--disable-update-pre',
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help="Disable pre-update Tiller operations.",
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is_flag=True)
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@click.option(
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'--metrics-output',
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help=(
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"Output path for prometheus metric data, should end in .prom. By "
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"default, no metric data is output."),
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default=None)
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@click.option('--tiller-host', help="Tiller host IP.", default=None)
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@click.option(
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'--tiller-port', help="Tiller host port.", type=int, default=None)
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@click.option(
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'--tiller-namespace',
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'-tn',
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help="Tiller namespace.",
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type=str,
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default=None)
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@click.option(
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'--timeout',
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help="Specifies time to wait for each chart to fully "
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"finish deploying.",
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type=int)
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@click.option(
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'--wait',
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help=(
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"Force Tiller to wait until the chart is deployed, "
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"rather than using the chart's specified wait policy. "
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"This is equivalent to sequenced chartgroups."),
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is_flag=True)
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@click.option(
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'--target-chart',
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help=(
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"The target chart to deploy. Required for specifying "
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"which chart to deploy when multiple are available."),
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default=None)
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@click.option('--bearer-token', help="User Bearer token", default=None)
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@click.option('--debug', help="Enable debug logging.", is_flag=True)
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@click.pass_context
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def apply_chart(
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ctx, location, release_prefix, disable_update_post, disable_update_pre,
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metrics_output, tiller_host, tiller_port, tiller_namespace, timeout,
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wait, target_chart, bearer_token, debug):
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CONF.debug = debug
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ApplyChart(
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ctx, location, release_prefix, disable_update_post, disable_update_pre,
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metrics_output, tiller_host, tiller_port, tiller_namespace, timeout,
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wait, target_chart, bearer_token).safe_invoke()
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class ApplyChart(CliAction):
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def __init__(
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self, ctx, location, release_prefix, disable_update_post,
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disable_update_pre, metrics_output, tiller_host, tiller_port,
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tiller_namespace, timeout, wait, target_chart, bearer_token):
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super(ApplyChart, self).__init__()
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self.ctx = ctx
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self.release_prefix = release_prefix
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# Filename can also be a URL reference
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self.location = location
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self.disable_update_post = disable_update_post
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self.disable_update_pre = disable_update_pre
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self.metrics_output = metrics_output
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self.tiller_host = tiller_host
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self.tiller_port = tiller_port
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self.tiller_namespace = tiller_namespace
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self.timeout = timeout
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self.target_chart = target_chart
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self.bearer_token = bearer_token
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def output(self, resp):
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for result in resp:
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if not resp[result] and not result == 'diff':
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self.logger.info('Did not perform chart %s(s)', result)
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elif result == 'diff' and not resp[result]:
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self.logger.info('No release changes detected')
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ch = resp[result]
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if not result == 'diff':
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msg = 'Chart {} took action: {}'.format(ch, result)
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if result == 'protected':
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msg += ' and requires operator attention.'
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elif result == 'purge':
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msg += ' before install/upgrade.'
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self.logger.info(msg)
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else:
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self.logger.info('Chart/values diff: %s', ch)
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def invoke(self):
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with Tiller(tiller_host=self.tiller_host, tiller_port=self.tiller_port,
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tiller_namespace=self.tiller_namespace,
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bearer_token=self.bearer_token) as tiller:
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try:
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doc_data = ReferenceResolver.resolve_reference(
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self.location, k8s=tiller.k8s)
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documents = list()
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for d in doc_data:
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documents.extend(list(yaml.safe_load_all(d.decode())))
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except InvalidPathException as ex:
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self.logger.error(str(ex))
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return
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except yaml.YAMLError as yex:
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self.logger.error("Invalid YAML found: %s" % str(yex))
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return
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try:
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resp = self.handle(documents, tiller)
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self.output(resp)
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finally:
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if self.metrics_output:
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path = self.metrics_output
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self.logger.info(
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'Storing metrics output in path: {}'.format(path))
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prometheus_client.write_to_textfile(path, metrics.REGISTRY)
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def handle(self, documents, tiller):
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chart = Chart(documents, target_chart=self.target_chart).get_chart()
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lock_name = 'chart-{}'.format(chart['metadata']['name'])
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@lock_and_thread(lock_name)
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def _handle():
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chart_download = ChartDownload()
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try:
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chart_download.get_chart(chart)
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chart_deploy = ChartDeploy(
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None, self.disable_update_pre, self.disable_update_post, 1,
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1, self.timeout, tiller)
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# TODO: Only get release with matching name.
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known_releases = tiller.list_releases()
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return chart_deploy.execute(
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chart, None, self.release_prefix, known_releases, 1)
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finally:
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chart_download.cleanup()
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return _handle()
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