Can not set HTTP Header from ENV variable

[EnriqueHernandezL]

Describe the bug

I tried to pass quarkus.http.header."Cache-Control".value=no-cache as a environmental variable to my Quarkus Server by setting QUARKUS_HTTP_HEADER__CACHE_CONTROL__VALUE as the variable name.

Expected behavior

Expected server response

...
Cache-Control: no-cache
...

Actual behavior

Actual server response

...
Cache.control: no-cache
...

How to Reproduce?

Make a quarkus HTTP Server and try to set the described header as an environmental variable. Then curl the server.

Output of uname -a or ver

No response

Output of java -version

No response

GraalVM version (if different from Java)

No response

Quarkus version or git rev

No response

Build tool (ie. output of mvnw --version or gradlew --version)

Apache Maven 3.8.4 (9b656c72d54e5bacbed989b64718c159fe39b537)

Additional information

No response

[mschorsch]

CC @radcortez

[geoand]

Does QUARKUS_HTTP_HEADER_CACHE_CONTROL_VALUE work?

[mschorsch]

Does QUARKUS_HTTP_HEADER_CACHE_CONTROL_VALUE work?

It doesn't work.

QUARKUS_HTTP_HEADER__CACHE_CONTROL__VALUE is correct. I think that the environment variable name does not contain enough information to convert _ in . or -.

[radcortez]

In this case, when you only have an environment variable like quarkus.http.header."Cache-Control".value=no-cache and the Cache-Control portion is a key, we don't know if CACHE_CONTROL needs to be converted to cache.control or cache-control. The default is always to use the ..

To convert this property properly, we need additional information. Just add the property name in one of the lower ordinal sources in the format quarkus.http.header."Cache-Control".value=no-cache. This will let us know the correct way to map the environment variable name.