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Bug 1343617 - The dynflow on Satellite 6 fails to load with error 'undefined method `action_class' for nil:NilClass
Summary: The dynflow on Satellite 6 fails to load with error 'undefined method `action...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Satellite
Classification: Red Hat
Component: Tasks Plugin
Version: 6.1.8
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: Unspecified
Assignee: Ivan Necas
QA Contact: Lukáš Hellebrandt
URL:
Whiteboard:
Depends On:
Blocks: 1479962
TreeView+ depends on / blocked
 
Reported: 2016-06-07 14:29 UTC by Chris Roberts
Modified: 2021-06-10 11:21 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2018-02-21 16:54:17 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Foreman Issue Tracker 20002 0 Normal Closed ISE on /foreman_tasks/dynflow/ when some invalid plans are in place 2021-02-18 14:56:31 UTC
Red Hat Knowledge Base (Solution) 2352231 0 None None None 2016-06-07 14:29:13 UTC

Description Chris Roberts 2016-06-07 14:29:14 UTC 
Description of problem:
Navigating to Monitor->Tasks open any task here, click on Dynflow console button, now just try to navigate bak using Back button and it fails with Internal Server Error, on checking /var/log/httpd/error_log can see traceback as below,

Version-Release number of selected component (if applicable):

6.1

Actual results:

[ 2016-05-09 17:31:11.4454 2434/7f66fc10f700 Pool2/Implementation.cpp:1274 ]: [App 2600 stderr] NoMethodError - undefined method `action_class' for nil:NilClass:
[ 2016-05-09 17:31:11.4455 2434/7f66fc10f700 Pool2/Implementation.cpp:1274 ]: [App 2600 stderr]         /opt/rh/ruby193/root/usr/share/gems/gems/dynflow-0.7.7.9/web/views/index.erb:23:in `block in evaluate_source'
[ 2016-05-09 17:31:11.4455 2434/7f66fc10f700 Pool2/Implementation.cpp:1274 ]: [App 2600 stderr]         /opt/rh/ruby193/root/usr/share/gems/gems/dynflow-0.7.7.9/web/views/index.erb:20:in `each'
[ 2016-05-09 17:31:11.4455 2434/7f66fc10f700 Pool2/Implementation.cpp:1274 ]: [App 2600 stderr]         /opt/rh/ruby193/root/usr/share/gems/gems/dynflow-0.7.7.9/web/views/index.erb:20:in `evaluate_source'
[ 2016-05-09 17:31:11.4455 2434/7f66fc10f700 Pool2/Implementation.cpp:1274 ]: [App 2600 stderr]         /opt/rh/ruby193/root/usr/share/gems/gems/tilt-1.3.3/lib/tilt/template.rb:209:in `instance_eval'

Expected results:


Additional info:

Stale or inconsistent data in dynflow tables.

This solution only works if traceback or failure is as below,

[ 2016-05-09 17:31:11.4454 2434/7f66fc10f700 Pool2/Implementation.cpp:1274 ]: [App 2600 stderr] NoMethodError - undefined method `action_class' for nil:NilClass:
[ 2016-05-09 17:31:11.4455 2434/7f66fc10f700 Pool2/Implementation.cpp:1274 ]: [App 2600 stderr]         /opt/rh/ruby193/root/usr/share/gems/gems/dynflow-0.7.7.9/web/views/index.erb:23:in `block in evaluate_source'
Modify /opt/rh/ruby193/root/usr/share/gems/gems/dynflow-0.7.7.9/web/views/index.erb and add line 12 and 23 to this file,
Raw
      8 <table class="table">
      9   <thead>
     10     <tr>
     11       <th><%= order_link(:id, "Id") %></th>
     12       <th><%= order_link(:id, "Id-blank") %></th>

     21   <tr>
     22     <td><%= h(plan.id) %></td>
     23     <td><%= h(plan.id) if plan.root_plan_step.nil? %></td>
     24     <td><%= h(plan.root_plan_step.action_class.name) %></td>
Restart httpd service and go to dynflow page, this would display new column 'Id-blank', all tasks numbers displayed below needs to be removed as below,
Raw
# delete from dynflow_steps where execution_plan_uuid in ('126ba0a1-f61c-47e8-b038-579192dbded1','8759041c-6933-414f-a753-8ea9b021cf89','701e3e34-9c70-4349-9ffd-93b94e6230a0','f13b6918-3fec-496a-91f8-45401859363d','e66385cb-896a-4ffe-bece-47b7032079b5');

# delete from dynflow_actions where execution_plan_uuid in ('126ba0a1-f61c-47e8-b038-579192dbded1','8759041c-6933-414f-a753-8ea9b021cf89','701e3e34-9c70-4349-9ffd-93b94e6230a0','f13b6918-3fec-496a-91f8-45401859363d','e66385cb-896a-4ffe-bece-47b7032079b5');

# delete from dynflow_execution_plans where uuid in ('126ba0a1-f61c-47e8-b038-579192dbded1','8759041c-6933-414f-a753-8ea9b021cf89','701e3e34-9c70-4349-9ffd-93b94e6230a0','f13b6918-3fec-496a-91f8-45401859363d','e66385cb-896a-4ffe-bece-47b7032079b5');
Change tasks id in brackets with problematic ids.
Comment 2 Bryan Kearney 2016-07-08 20:38:42 UTC 
Per 6.3 planning, moving out non acked bugs to the backlog
Comment 4 Ivan Necas 2017-08-08 15:59:56 UTC 
Connecting redmine issue http://projects.theforeman.org/issues/20002 from this bug
Comment 7 Adam Ruzicka 2017-10-11 12:38:25 UTC 
Moving to ON_QA, the issue was fixed in the meantime. Latest 6.3 builds already contain the fixed code.
Comment 8 Lukáš Hellebrandt 2018-01-05 11:54:14 UTC 
Verified with Sat6.3 snap 30.

Used reproducer from the OP. The reproducer from the connected upstream tracker seems to be related but different issue but I performed the steps from there, too. No ISE was shown in WebUI, no error in logs.
Comment 9 Satellite Program 2018-02-21 16:54:17 UTC 
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA.
> 
> For information on the advisory, and where to find the updated files, follow the link below.
> 
> If the solution does not work for you, open a new bug report.
> 
> https://access.redhat.com/errata/RHSA-2018:0336
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