[INLONG-8251][Agent] Add global memory limit for file collect

[justinwwhuang]

Prepare a Pull Request

add global memory limit for file collect

• Fixes [Improve][Agent] Add global memory limit for file collect #8251

Motivation

in some cases the jvm heap limits to 256m, but we need to collect more than 1001g files at the same time, that causes oom. maybe the file type would frequently change, but we dont want to change the configure all the time. so i just add the global memory limit no longer by the message count but by the total data len*

Modifications

add global memeory limit for file collect, for three module: reader, channel and writer. the way to limit is semaphore

Verifying this change

(Please pick either of the following options)

• This change is a trivial rework/code cleanup without any test coverage.

• This change is already covered by existing tests, such as:
  (please describe tests)

• This change added tests and can be verified as follows:

  (example:)

  • Added integration tests for end-to-end deployment with large payloads (10MB)
  • Extended integration test for recovery after broker failure

Documentation

• Does this pull request introduce a new feature? (yes / no)
• If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented)
• If a feature is not applicable for documentation, explain why?
• If a feature is not documented yet in this PR, please create a follow-up issue for adding the documentation

[luchunliang]

LGTM

[healchow]

LGTM

[EMsnap]

Excellent!

[doleyzi]

LGTM