Create initial Java Agent to intercept Socket::connect calls

[reta]

Description

Create initial Java Agent to intercept Socket::connect calls

Related Issues

Closes #17660

Check List

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

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[reta]

@kumargu moving on with the Agent, the Policy is not a blocker till we jump to JDK-24 or above

[kumargu]

@kumargu moving on with the Agent, the Policy is not a blocker till we jump to JDK-24 or above

Well, well, how did i miss that. But that's great catch and good news.

---

Anyways, I did a whole lot of trimming and code rewrite for the Policy. We can leverage it when we target JDK-24.

#17712

[kumargu]

This change is lot simpler now and LGTM. thanks!

[reta]

Anyways, I did a whole lot of trimming and code rewrite for the Policy. We can leverage it when we target JDK-24.

Thank you, we do need that in any case, but we could proceed in parallel here

[github-actions]

❌ Gradle check result for 5c79974: 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 078f7d6: SUCCESS

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 71 lines in your changes missing coverage. Please review.

Project coverage is 72.42%. Comparing base (399188f) to head (078f7d6).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
.../src/main/java/org/opensearch/javaagent/Agent.java	0.00%	24 Missing ⚠️
...opensearch/javaagent/SocketChannelInterceptor.java	0.00%	22 Missing ⚠️
...rg/opensearch/javaagent/bootstrap/AgentPolicy.java	0.00%	19 Missing ⚠️
...pensearch/javaagent/StackCallerChainExtractor.java	0.00%	6 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #17724      +/-   ##
============================================
- Coverage     72.46%   72.42%   -0.04%     
- Complexity    65855    65891      +36     
============================================
  Files          5322     5326       +4     
  Lines        305477   305548      +71     
  Branches      44312    44322      +10     
============================================
- Hits         221359   221301      -58     
- Misses        66023    66105      +82     
- Partials      18095    18142      +47     

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