User wants to change slack notification message on QUEUED / RUNNING status

[y-oksaku]

What happened:

Uses can change slack notification messages by setting metadata of build.meta.notification.slack.<jobName>.message.
However, metadata is not available on QUEUED / RUNNING status since the builds are not executed yet.

For this reason, uses cannot change the message on QUEUED / RUNNING status now.

What you expected to happen:

Change slack massages on QUEUED / RUNNING status to mention a slack user.

[y-oksaku]

I think that Proposal 1 is easy to use for uses.

Proposal 1

Add a message field into settings.slack as the following:

jobs:
  main:
    requires: [ ~commit, ~pr ]
    steps: ...
    settings:
      slack:
        channels: [ your-channel ]
        statuses: [ SUCCESS, FAILURE ]
+       message: "foo bar"

And use the message value as the default custom message.
This value is used if uses does not set the metadata of build.meta.notification.slack.<jobName>.message.
(i.e. This value is overwrote by the metadata.)

Proposal 2

Use specific build parameters parameters.slackMessage or annotations screwdriver.cd/slackMessage.