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Enable arbitrary env vars to be propagated to Complement containers #382

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merged 1 commit into from May 27, 2022

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@kegsay kegsay commented May 27, 2022

Fixes #6

This PR adds a new complement env var called COMPLEMENT_SHARE_ENV_PREFIX.
This can be set to any string e.g FOO_. If it is set, Complement will
look at the host environment for any env var with this prefix. If it finds
it, it will remove the prefix and add it to the Complement container.

For example, with a host env:

COMPLEMENT_SHARE_ENV_PREFIX=FOO_
FOO_DENDRITE_TRACE_HTTP=1

This will cause DENDRITE_TRACE_HTTP=1 to be set in the Complement container.

This addresses 2 desires:

  • The ability to ad-hoc set debugging env vars when a test is failing
    e.g to use os.Setenv("FOO_DENDRITE_TRACE_HTTP", "1") in a test to get more logging.
  • The ability to pass through arbitrary data to a Synapse container, as requested
    by @reivilibre

Fixes #6

This PR adds a new complement env var called `COMPLEMENT_SHARE_ENV_PREFIX`.
This can be set to any string e.g `FOO_`. If it is set, Complement will
look at the host environment for any env var with this prefix. If it finds
it, it will remove the prefix and add it to the Complement container.

For example, with a host env:
```
COMPLEMENT_SHARE_ENV_PREFIX=FOO_
FOO_DENDRITE_TRACE_HTTP=1
```
This will cause `DENDRITE_TRACE_HTTP=1` to be set in the Complement container.

This addresses 2 desires:
 - The ability to ad-hoc set debugging env vars when a test is failing
   e.g to use `os.Setenv("DENDRITE_TRACE_HTTP", "1")` in a test to get more logging.
 - The ability to pass through arbitrary data to a Synapse container, as requested
   by @reivilibre
@kegsay kegsay added the enhancement New feature or request label May 27, 2022
@kegsay kegsay requested a review from reivilibre May 27, 2022 11:46
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@reivilibre reivilibre left a comment

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LGTM — lovely thank you :)

@kegsay kegsay merged commit 1986a59 into main May 27, 2022
@kegsay kegsay deleted the kegan/env-var-prop branch May 27, 2022 14:59
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Allow os.Setenv to pass through to docker containers
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