feat(http-logger): add max request and response body size attributes

[MariaLapovska]

Description

In some cases APISIX users might want to customize the max size of request/response body sent to HTTP server via http-logger plugin to be lower/higher than the current default value of 512KiB.
For this purpose two new attributes are introduced to http-logger plugin (similar to the existing ones in kafka-logger, taking advantage of the functionality that's already implemented in log-util):

• max_resp_body_bytes
• max_req_body_bytes

Checklist

• I have explained the need for this PR and the problem it solves
• I have explained the changes or the new features added to this PR
• [] I have added tests corresponding to this change
• I have updated the documentation to reflect this change
• I have verified that this change is backward compatible (If not, please discuss on the APISIX mailing list first)

[MariaLapovska]

Hi @shreemaan-abhishek!
I'm trying to add these attributes based on your PR - could you help me out with tests? I'm a complete newbie in Lua/Perl but we're using APISIX for our Java project and really need this functionality 😅

[Baoyuantop]

Hi @MariaLapovska, are you currently experiencing any difficulties? Please describe in more detail so that others can help.

[MariaLapovska]

@Baoyuantop I have added max_resp_body_bytes and max_req_body_bytes attributes for http-logger plugin (to be able to limit max request/response body size logged), following the example and reusing the logic that @shreemaan-abhishek has already implemented in this PR.
I am a Java dev, so I don't have enough expertise to write tests for this feature. Would it be possible for anyone to help me out with adding tests for logging large body via http-logger, same as the existing tests for kafka-logger?

[Baoyuantop]

Hi @MariaLapovska, we can create an issue detailing this requirement and ensure that the change is justified through community discussion

[MariaLapovska]

Hi @Baoyuantop ! I added feature request here - #12130

[shreemaan-abhishek]

@MariaLapovska if you spend a little time reading the tests you will understand that they are very simple. Most of the test cases consist of apisix configurations. If you have any specific questions feel free to ask and the community will help.

[Baoyuantop]

Hi @MariaLapovska, are you still working on this PR?

[MariaLapovska]

@Baoyuantop yes - I'll add tests, and I've created an issue detailing this feature, but there's no discussion in it