diff options
Diffstat (limited to 'roles/openshift_health_checker/callback_plugins/zz_failure_summary.py')
| -rw-r--r-- | roles/openshift_health_checker/callback_plugins/zz_failure_summary.py | 88 |
1 files changed, 65 insertions, 23 deletions
diff --git a/roles/openshift_health_checker/callback_plugins/zz_failure_summary.py b/roles/openshift_health_checker/callback_plugins/zz_failure_summary.py index 208e81048..64c29a8d9 100644 --- a/roles/openshift_health_checker/callback_plugins/zz_failure_summary.py +++ b/roles/openshift_health_checker/callback_plugins/zz_failure_summary.py @@ -1,8 +1,13 @@ -# vim: expandtab:tabstop=4:shiftwidth=4 ''' Ansible callback plugin. ''' +# Reason: In several locations below we disable pylint protected-access +# for Ansible objects that do not give us any public way +# to access the full details we need to report check failures. +# Status: disabled permanently or until Ansible object has a public API. +# This does leave the code more likely to be broken by future Ansible changes. + from pprint import pformat from ansible.plugins.callback import CallbackBase @@ -21,38 +26,37 @@ class CallbackModule(CallbackBase): CALLBACK_TYPE = 'aggregate' CALLBACK_NAME = 'failure_summary' CALLBACK_NEEDS_WHITELIST = False + _playbook_file = None def __init__(self): super(CallbackModule, self).__init__() self.__failures = [] + def v2_playbook_on_start(self, playbook): + super(CallbackModule, self).v2_playbook_on_start(playbook) + # re: playbook attrs see top comment # pylint: disable=protected-access + self._playbook_file = playbook._file_name + def v2_runner_on_failed(self, result, ignore_errors=False): super(CallbackModule, self).v2_runner_on_failed(result, ignore_errors) self.__failures.append(dict(result=result, ignore_errors=ignore_errors)) def v2_playbook_on_stats(self, stats): super(CallbackModule, self).v2_playbook_on_stats(stats) - # TODO: update condition to consider a host var or env var to - # enable/disable the summary, so that we can control the output from a - # play. if self.__failures: - self._print_failure_summary() + self._print_failure_details(self.__failures) - def _print_failure_summary(self): - '''Print a summary of failed tasks (including ignored failures).''' + def _print_failure_details(self, failures): + '''Print a summary of failed tasks or checks.''' self._display.display(u'\nFailure summary:\n') - # TODO: group failures by host or by task. If grouped by host, it is - # easy to see all problems of a given host. If grouped by task, it is - # easy to see what hosts needs the same fix. - - width = len(str(len(self.__failures))) + width = len(str(len(failures))) initial_indent_format = u' {{:>{width}}}. '.format(width=width) initial_indent_len = len(initial_indent_format.format(0)) subsequent_indent = u' ' * initial_indent_len subsequent_extra_indent = u' ' * (initial_indent_len + 10) - for i, failure in enumerate(self.__failures, 1): + for i, failure in enumerate(failures, 1): entries = _format_failure(failure) self._display.display(u'\n{}{}'.format(initial_indent_format.format(i), entries[0])) for entry in entries[1:]: @@ -60,11 +64,52 @@ class CallbackModule(CallbackBase): indented = u'{}{}'.format(subsequent_indent, entry) self._display.display(indented) - -# Reason: disable pylint protected-access because we need to access _* -# attributes of a task result to implement this method. -# Status: permanently disabled unless Ansible's API changes. -# pylint: disable=protected-access + failed_checks = set() + playbook_context = None + # re: result attrs see top comment # pylint: disable=protected-access + for failure in failures: + # get context from check task result since callback plugins cannot access task vars + playbook_context = playbook_context or failure['result']._result.get('playbook_context') + failed_checks.update( + name + for name, result in failure['result']._result.get('checks', {}).items() + if result.get('failed') + ) + if failed_checks: + self._print_check_failure_summary(failed_checks, playbook_context) + + def _print_check_failure_summary(self, failed_checks, context): + checks = ','.join(sorted(failed_checks)) + # NOTE: context is not set if all failures occurred prior to checks task + summary = ( + '\n' + 'The execution of "{playbook}"\n' + 'includes checks designed to fail early if the requirements\n' + 'of the playbook are not met. One or more of these checks\n' + 'failed. To disregard these results, you may choose to\n' + 'disable failing checks by setting an Ansible variable:\n\n' + ' openshift_disable_check={checks}\n\n' + 'Failing check names are shown in the failure details above.\n' + 'Some checks may be configurable by variables if your requirements\n' + 'are different from the defaults; consult check documentation.\n' + 'Variables can be set in the inventory or passed on the\n' + 'command line using the -e flag to ansible-playbook.\n' + ).format(playbook=self._playbook_file, checks=checks) + if context in ['pre-install', 'health']: + summary = ( + '\n' + 'You may choose to configure or disable failing checks by\n' + 'setting Ansible variables. To disable those above:\n\n' + ' openshift_disable_check={checks}\n\n' + 'Consult check documentation for configurable variables.\n' + 'Variables can be set in the inventory or passed on the\n' + 'command line using the -e flag to ansible-playbook.\n' + ).format(checks=checks) + # other expected contexts: install, upgrade + self._display.display(summary) + + +# re: result attrs see top comment # pylint: disable=protected-access def _format_failure(failure): '''Return a list of pretty-formatted text entries describing a failure, including relevant information about it. Expect that the list of text entries will be joined @@ -101,11 +146,8 @@ def _format_failed_checks(checks): return stringc(pformat(checks), C.COLOR_ERROR) -# Reason: disable pylint protected-access because we need to access _* -# attributes of obj to implement this function. -# This is inspired by ansible.playbook.base.Base.dump_me. -# Status: permanently disabled unless Ansible's API changes. -# pylint: disable=protected-access +# This is inspired by ansible.playbook.base.Base.dump_me. +# re: play/task/block attrs see top comment # pylint: disable=protected-access def _get_play(obj): '''Given a task or block, recursively tries to find its parent play.''' if hasattr(obj, '_play'): |