Colorize output to terminal

[merlin83]

No description provided.

[coderanger]

This definitely needs to be conditional at am minimum. Most of my use of this project is in a 12-factor environment where the output is going to a log file and shouldn't have colors. At a minimum I would check that stdout is a TTY, and that has a TERM that probably supports color, and probably offer an env var or other config option to disable it.

[merlin83]

Agreed. I've added in a check to determine if we should used colorized output. I don't think it is possible to add it as a configuration option in supervisor for eventlisteners, so an env var might be the way to go.

[merlin83]

There are two general purposes where I use this tool.

1. Output directly to terminal for monitoring
2. A log in cases where the output is consumed by another application and then displayed to a terminal. E.g. tail or docker logs

Unfortunately, a single envvar will not suffice. In the latter, even though it does not output to a terminal or has a tty, we still want the colorized format. Thus, I have introduced two env variables "STDOUT_ALWAYS_ENABLE_COLOR_OUTPUT" and "STDOUT_DISABLE_COLOR_OUTPUT".

[coderanger]

This will require copyright attribution and a license statement for the copied code. Just something like "This code is copyright X and is used under the terms of the Y license".

[merlin83]

Updated with copyright attribution and license statement.

[coderanger]

Roger, I'm on a plane tomorrow but will try to look at this once I get back to real networking. Thanks!