Add File Interceptor and Integ Tests

[RajatGupta02]

Description

Implements File Interceptor and adds integration tests for it.

Related Issues

• [Feature Request] Phase off SecurityManager usage in favor of Java Agent #17662
• [META] [Security Manager Replacement] Native Java Agent (dynamic code rewriting, must be low overhead) #17658

Check List

• Functionality includes testing.
• API changes companion pull request created, if applicable.
• Public documentation issue/PR created, if applicable.

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[github-actions]

❌ Gradle check result for b23652b: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

✅ Gradle check result for 99a4d05: SUCCESS

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 39 lines in your changes missing coverage. Please review.

Project coverage is 72.33%. Comparing base (5ec96c5) to head (101cd26).
Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
...java/org/opensearch/javaagent/FileInterceptor.java	0.00%	30 Missing ⚠️
.../src/main/java/org/opensearch/javaagent/Agent.java	0.00%	9 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #17760      +/-   ##
============================================
- Coverage     72.35%   72.33%   -0.02%     
+ Complexity    66054    66035      -19     
============================================
  Files          5358     5359       +1     
  Lines        306485   306522      +37     
  Branches      44406    44421      +15     
============================================
- Hits         221763   221736      -27     
- Misses        66538    66662     +124     
+ Partials      18184    18124      -60     

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[github-actions]

❌ Gradle check result for 63cc7c2: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

✅ Gradle check result for bddb108: SUCCESS

[github-actions]

❌ Gradle check result for a7c48a8: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❕ Gradle check result for 1fff2f0: UNSTABLE

Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[github-actions]

❕ Gradle check result for 101cd26: UNSTABLE

Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[reta]

Thanks @RajatGupta02 , @kumargu , I think this is good start, there are quite a few other file related APIs but we could target them later on

[reta]

@andrross @kumargu LGTY? thanks!

[kumargu]

LGTM. thanks!

[kumargu]

here are quite a few other file related APIs but we could target them later one

Agreed. The model is pretty extensible.