Multiple machine runners and /tmp/SLACK_JOB_STATUS

[kozak]

Describe Request:

I am running a machine executor for our iOS builds and using multiple copies of it (an executor can process a job at a time).

This orb uses /tmp/SLACK_JOB_STATUS and some other /tmp/* files to pass information between jobs / commands.

It would be cool if the /tmp/SLACK_JOB_STATUS was namespaced so that multiple runners can coexist on the same machine.

Examples:

Say I have 2 instances of machine executor running:

• runner-1
• runner-2

1. runner-1 has executed a workflow and failed
2. runner-1 wrote the failed status /tmp/SLACK_JOB_STATUS
3. runner-2 has executed a workflow and succeded
4. runner-2 wrote the success status to /tmp/SLACK_JOB_STATUS
5. runner-1 has an incorrect job status

Another problem:
Say runner-1 and runner-2 are executed from different OS users (for isolation). There will be a permission problem with the shared /tmp/SLACK_JOB_STATUS file.