RunBefore and RunAfter

[malomarrec]

Problem

When I run a campaign spec, there are some things I want to do before (setup) and after (cleanup, message passing).
One way is to build a wrapper around the CLI (great!).
For smaller use cases, having something builtin might be helpful.

For example:
Before

• Check that environment variables are set (eg. with token) before running the spec
• Check that other systems are ready (eg. a Jira server is attainable)
  After
• start a script that links tickets with the PRs I have created
• clean up errors (eg. creating a Jira ticket failed due to permission errors)

Solution

This section is a dump of thoughts, not necessarily the right solution.

• Have runAfter and runBefore in the campaign spec, that allows you to trigger something else. This could trigger setup scripts locally, and cleanup or messaging script.
• Have an eventHook on the sourcegraph instance, that sends the status of the PR, as described here Add batch-change.name to changeset templating src-cli#487 (comment)

[malomarrec]

(1) This is blocked by SSE
(2) Hooks are blocked by SSE.

[malomarrec]

+ 1 on the problem from customer