st2: Mistral workflow stuck in RUNNING state after error encountered.

A task was marked as RUNNING despite extra information being available indicating an error occurred.

  "elapsed_seconds": 231993.945685,
  "web_url": "https://automate.dm.gg/#/history/58b06299fd6f06179d18eb94/general",
  "parent": "58b05f28fd6f0640445ed4d5",
  "result": {
    "tasks": [
      {
        "state_info": null,
        "name": "check_host_health",
        "created_at": "2017-02-24 16:43:05.537055",
        "updated_at": null,
        "id": "0986cc88-4696-4890-8b74-0cc9c0b552b9",
        "workflow_execution_id": "1417305b-288d-40f7-b7fc-324ba897fd3a",
        "state": "RUNNING",
        "result": [],
        "published": {},
        "input": null,
        "workflow_name": "st2dm_upgrade_pkg.post_upgrade_pkg.check_environment"
      }
    ],
    "extra": {
      "state_info": "list index out of range",
      "state": "ERROR"
    }

The task that was called is shown below and the error is referring to mistral being unable to publish the variable because YAQL detected the list index out of range.:

      check_host_health:
        action: livestatus.get
        input:
          table: services
          columns: [ host_address ]
          stats:
            - state != 0
            - state_type = 1
            - "&2"
          filters:
            - host_address ~ ^<% $.host %>
            - display_name ~ OS::Hardware
            - "!"
            - display_name ~ SSH::OOB service status
            - "!"
            - display_name ~ HTTP::Zend OPCache
            - "!"
        publish:
            health_status: <% int(task(check_host_health).result.result[0][1]) %>
        on-success:
          - remove_schedule_downtime: <% $.health_status = 0 %>
          - abort_upgrade: <% $.health_status != 0 %>
        on-error: abort_upgrade

About this issue

Original URL
State: closed
Created 7 years ago
Comments: 15 (14 by maintainers)

Most upvoted comments

@emptywee are the errors you posted related to list index out of range or are they all errors related to tasks remaining in RUNNING state?

@lakshmi-kannan the use case posted in gist isn’t quite the same as the one I posted. Here is a simple workflow to reproduce the error

actions/yaql_out_of_range.yaml

---
name: yaql_out_of_range
pack: test
description: "Provoke a list index out of range error"
runner_type: mistral-v2
entry_point: workflow/yaql_out_of_range.yaml
enabled: True
parameters:
    list_param:
        type: array
        default: []
        description: An empty list.

actions/workflow/yaql_out_of_range.yaml

version: '2.0'

test.yaql_out_of_range:
    description: test yaql list index out of range.
    type: direct
    input:
        - list_param
    tasks:
        read_consul:
            action: core.local
            input:
                cmd: "echo <% list_param %>"
            publish:
                bad_yaql_ref: <% $.list_param[0][1] %>
            on-success: good
            on-error: bad

        good:
            action: core.noop

        bad:
            action: core.noop

nzlosh on Mar 2, 2017