Add support for caching based on Locale.

[ianwallen]

Describe the feature
Caching does not seem to take locale into account.

springdoc-openapi/springdoc-openapi-common/src/main/java/org/springdoc/core/OpenAPIService.java

Lines 727 to 729 in f86c325

	public OpenAPI getCachedOpenAPI() {
	return cachedOpenAPI;
	}

This can causes the wrong language to be displayed.

To Reproduce
Turn on caching (springdoc.cache.disabled=false)
Generate first request to swagger page using English locale
Generate second request swagger page using French locale

Expected behavior
I would expect that the second request using the French locale would return the French content however it returns the cached data which is the English content.

Note: Doing the reverse produces the opposite results. i.e. French local first and then English locale second will end up producing French data for the English locale.

Additional context
Work around seems to be to set
springdoc.cache.disabled=true

[bnasslahsen]

@oscarTala,

Make sure you post clear issue.

You can follow the contributing guidelines
All the relevant information are listed.

Do not create any other issues. You can update this ticket and we can reopen it.

[ianwallen]

Please see unit test
https://github.com/ianwallen/springdoc-openapi/tree/1354_unit_test_170

It fails but if you uncomment the following, it will work

//@TestPropertySource(properties = Constants.SPRINGDOC_CACHE_DISABLED + "=true")

[bnasslahsen]

Well the cache as implemented, is not based on Locale.
This is not a bug, But feature request...
Are you willing to propose a PR for it ?