From 3f3f87b7982b570ffb976865e3eace2d36960bd4 Mon Sep 17 00:00:00 2001 From: Luke Meyer Date: Fri, 16 Jun 2017 15:36:06 -0400 Subject: openshift_checks: improve comments/names --- .../callback_plugins/zz_failure_summary.py | 38 ++++++++++++---------- 1 file changed, 21 insertions(+), 17 deletions(-) (limited to 'roles/openshift_health_checker/callback_plugins') 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 443b76ea1..d10200719 100644 --- a/roles/openshift_health_checker/callback_plugins/zz_failure_summary.py +++ b/roles/openshift_health_checker/callback_plugins/zz_failure_summary.py @@ -1,6 +1,6 @@ -''' -Ansible callback plugin. -''' +""" +Ansible callback plugin to give a nicely formatted summary of failures. +""" # Reason: In several locations below we disable pylint protected-access # for Ansible objects that do not give us any public way @@ -16,11 +16,11 @@ from ansible.utils.color import stringc class CallbackModule(CallbackBase): - ''' + """ This callback plugin stores task results and summarizes failures. The file name is prefixed with `zz_` to make this plugin be loaded last by Ansible, thus making its output the last thing that users see. - ''' + """ CALLBACK_VERSION = 2.0 CALLBACK_TYPE = 'aggregate' @@ -48,7 +48,7 @@ class CallbackModule(CallbackBase): self._print_failure_details(self.__failures) def _print_failure_details(self, failures): - '''Print a summary of failed tasks or checks.''' + """Print a summary of failed tasks or checks.""" self._display.display(u'\nFailure summary:\n') width = len(str(len(failures))) @@ -69,7 +69,9 @@ class CallbackModule(CallbackBase): 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 + # Get context from check task result since callback plugins cannot access task vars. + # NOTE: thus context is not known unless checks run. Failures prior to checks running + # don't have playbook_context in the results. But we only use it now when checks fail. playbook_context = playbook_context or failure['result']._result.get('playbook_context') failed_checks.update( name @@ -81,8 +83,11 @@ class CallbackModule(CallbackBase): 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 = ( + # The purpose of specifying context is to vary the output depending on what the user was + # expecting to happen (based on which playbook they ran). The only use currently is to + # vary the message depending on whether the user was deliberately running checks or was + # trying to install/upgrade and checks are just included. Other use cases may arise. + summary = ( # default to explaining what checks are in the first place '\n' 'The execution of "{playbook}"\n' 'includes checks designed to fail early if the requirements\n' @@ -94,27 +99,26 @@ class CallbackModule(CallbackBase): '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' + 'command line using the -e flag to ansible-playbook.\n\n' ).format(playbook=self._playbook_file, checks=checks) if context in ['pre-install', 'health']: - summary = ( + summary = ( # user was expecting to run checks, less explanation needed '\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' + 'command line using the -e flag to ansible-playbook.\n\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 + """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 - by a newline separator when output to the user.''' + by a newline separator when output to the user.""" result = failure['result'] host = result._host.get_name() play = _get_play(result._task) @@ -135,7 +139,7 @@ def _format_failure(failure): def _format_failed_checks(checks): - '''Return pretty-formatted text describing checks that failed.''' + """Return pretty-formatted text describing checks that failed.""" failed_check_msgs = [] for check, body in checks.items(): if body.get('failed', False): # only show the failed checks @@ -150,7 +154,7 @@ def _format_failed_checks(checks): # 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.''' + """Given a task or block, recursively try to find its parent play.""" if hasattr(obj, '_play'): return obj._play if getattr(obj, '_parent'): -- cgit v1.2.3