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#
# 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.
#
import collections
from cliff import command
from heatclient.common import format_utils
from heatclient import exc
from heatclient.openstack.common._i18n import _
class ListStackFailures(command.Command):
"""Show information about failed stack resources."""
def take_action(self, parsed_args):
self.heat_client = self.app.client_manager.orchestration
failures = self._build_failed_resources(parsed_args.stack)
deployment_failures = self._build_software_deployments(failures)
self._print_failures(failures, deployment_failures,
long=parsed_args.long)
def get_parser(self, prog_name):
parser = super(ListStackFailures, self).get_parser(prog_name)
parser.add_argument(
'stack',
metavar='<stack>',
help=_('Stack to display (name or ID)'),
)
parser.add_argument(
'--long',
action='store_true',
default=False,
help=_('Show full deployment logs in output'),
)
return parser
def _build_failed_resources(self, stack):
"""List information about FAILED stack resources.
Failed resources are added by recursing from the top level stack into
failed nested stack resources. A failed nested stack resource is only
added to the failed list if it contains no failed resources.
"""
s = self.heat_client.stacks.get(stack)
if s.status != 'FAILED':
return []
resources = self.heat_client.resources.list(s.id)
failures = collections.OrderedDict()
self._append_failed_resources(failures, resources, [s.stack_name])
return failures
def _append_failed_resources(self, failures, resources, resource_path):
"""Recursively build list of failed resources."""
appended = False
for r in resources:
if not r.resource_status.endswith('FAILED'):
continue
# determine if this resources is a nested stack
links_rel = list([l['rel'] for l in r.links])
is_nested = 'nested' in links_rel
nested_appended = False
next_resource_path = list(resource_path)
next_resource_path.append(r.resource_name)
if is_nested:
try:
nested_resources = self.heat_client.resources.list(
r.physical_resource_id)
nested_appended = self._append_failed_resources(
failures, nested_resources, next_resource_path)
except exc.HTTPNotFound:
# there is a failed resource but no stack
pass
if not nested_appended:
failures['.'.join(next_resource_path)] = r
appended = True
return appended
def _build_software_deployments(self, resources):
"""Build a dict of software deployments from the supplied resources.
The key is the deployment ID.
"""
df = {}
if not resources:
return df
for r in resources.values():
if r.resource_type not in ('OS::Heat::StructuredDeployment',
'OS::Heat::SoftwareDeployment'):
continue
try:
sd = self.heat_client.software_deployments.get(
deployment_id=r.physical_resource_id)
df[r.physical_resource_id] = sd
except exc.HTTPNotFound:
pass
return df
def _print_failures(self, failures, deployment_failures, long=False):
"""Print failed resources.
If the resource is a deployment resource, look up the deployment and
print deploy_stdout and deploy_stderr.
"""
out = self.app.stdout
if not failures:
return
for k, f in failures.items():
out.write('%s:\n' % k)
out.write(' resource_type: %s\n' % f.resource_type)
out.write(' physical_resource_id: %s\n' %
f.physical_resource_id)
out.write(' status: %s\n' % f.resource_status)
reason = format_utils.indent_and_truncate(
f.resource_status_reason,
spaces=4,
truncate=not long,
truncate_prefix='...\n')
out.write(' status_reason: |\n%s\n' % reason)
df = deployment_failures.get(f.physical_resource_id)
if df:
for output in ('deploy_stdout', 'deploy_stderr'):
format_utils.print_software_deployment_output(
data=df.output_values, name=output, long=long, out=out)
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