Doc: explain various combinations of task names and workflow commands work in 'on-xxx' clauses

[Renat Akhmerov]

There maybe various combinations of task names and engine commands in 'on-success', 'on-error', 'on-complete'. For example,

taskA:
  action: ...
  on-success:
    - taskB
    - pause
    - taskC

or

taskA:
  action: ...
  on-success:
    - taskB
    - fail
    - taskC

We need to clearly explain how these combinations work in Mistral DSL spec and provide workflow examples illustrating that.

[Matt B (matty-brennan)]

I believe I just ran in to this point of confusion. If a task has 'pause' and after the workflow gets there you set the workflow to "running", is it expected that the other on-success do not execute? This seems to be a different behavior than "pause-before"

[Renat Akhmerov (rakhmerov)]

Matt, no, it's not expected. If it really behaves so then this is a bug.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/545692

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/545692
Committed: https://git.openstack.org/cgit/openstack/mistral/commit/?id=7423a58365c1c708f2231bfc7e4371bd220e75e5
Submitter: Zuul
Branch: master

commit 7423a58365c1c708f2231bfc7e4371bd220e75e5
Author: Renat Akhmerov <email address hidden>
Date: Mon Feb 12 15:40:55 2018 +0700

    Explain better combinations of task names and engine commands in docs

    Closes-Bug: #1682377
    Change-Id: I6c53fc6b3debaf27b01a03b5180f3ef56ddf3e8f

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/queens
Review: https://review.openstack.org/546557

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/546557
Committed: https://git.openstack.org/cgit/openstack/mistral/commit/?id=6d4766759e75427ae761a347fe20130f5133dac0
Submitter: Zuul
Branch: stable/queens

commit 6d4766759e75427ae761a347fe20130f5133dac0
Author: Renat Akhmerov <email address hidden>
Date: Mon Feb 12 15:40:55 2018 +0700

    Explain better combinations of task names and engine commands in docs

    Closes-Bug: #1682377
    Change-Id: I6c53fc6b3debaf27b01a03b5180f3ef56ddf3e8f
    (cherry picked from commit 7423a58365c1c708f2231bfc7e4371bd220e75e5)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/mistral 6.0.1 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/mistral 7.0.0.0b1 development milestone.