Added getSettings() support, ActionListener onFailure(), and initial createComponents support for extensions

[ryanbogan]

Signed-off-by: Ryan Bogan rbogan@amazon.com

Description

This PR merges the third batch of feature/extensions into main and will then be backported to 2.x. It adds getSettings() support, ActionListener onFailure(), and initial createComponents support.

Issues Resolved

Issue with links to PR's included in this merge: #5272
Meta issue for entire feature/extensions merge: #5263

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/8225/
• CommitID: c08050a

[codecov-commenter]

Codecov Report

Merging #5597 (a66cfd5) into main (0f520f6) will decrease coverage by 0.00%.
The diff coverage is 72.50%.

@@             Coverage Diff              @@
##               main    #5597      +/-   ##
============================================
- Coverage     71.02%   71.01%   -0.01%     
- Complexity    58403    58443      +40     
============================================
  Files          4741     4748       +7     
  Lines        278535   278812     +277     
  Branches      40268    40296      +28     
============================================
+ Hits         197819   197988     +169     
- Misses        64509    64637     +128     
+ Partials      16207    16187      -20     

Impacted Files	Coverage Δ
...va/org/opensearch/extensions/ExtensionRequest.java	29.41% <ø> (ø)
...arch/extensions/UpdateSettingsResponseHandler.java	0.00% <0.00%> (ø)
...rch/extensions/rest/RestSendToExtensionAction.java	27.77% <ø> (ø)
...a/org/opensearch/extensions/ExtensionsManager.java	55.85% <31.57%> (-4.90%)	⬇️
...rg/opensearch/env/EnvironmentSettingsResponse.java	60.00% <60.00%> (ø)
...g/opensearch/extensions/UpdateSettingsRequest.java	63.33% <63.33%> (ø)
...sions/AddSettingsUpdateConsumerRequestHandler.java	65.21% <65.21%> (ø)
...nsions/settings/RegisterCustomSettingsRequest.java	77.77% <77.77%> (ø)
...h/extensions/AddSettingsUpdateConsumerRequest.java	79.31% <79.31%> (ø)
...g/opensearch/common/settings/WriteableSetting.java	93.45% <93.45%> (ø)
... and 479 more

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[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/8226/
• CommitID: 1a75ced

[ryanbogan]

@dblock @reta would love your feedback on this when you get a chance

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.snapshots.DedicatedClusterSnapshotRestoreIT.testIndexDeletionDuringSnapshotCreationInQueue

• URL: https://build.ci.opensearch.org/job/gradle-check/8289/
• CommitID: aab1306
  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 (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      2 org.opensearch.cluster.service.MasterServiceTests.classMethod
      2 org.opensearch.cluster.service.MasterServiceTests.classMethod
      1 org.opensearch.recovery.RecoveryWhileUnderLoadIT.testRecoverWhileUnderLoadWithReducedAllowedNodes
      1 org.opensearch.recovery.RecoveryWhileUnderLoadIT.testRecoverWhileUnderLoadAllocateReplicasRelocatePrimariesTest
      1 org.opensearch.recovery.RecoveryWhileUnderLoadIT.testRecoverWhileRelocating
      1 org.opensearch.cluster.service.MasterServiceTests.testThrottlingForMultipleTaskTypes
      1 org.opensearch.cluster.service.MasterServiceTests.testThrottlingForMultipleTaskTypes

• URL: https://build.ci.opensearch.org/job/gradle-check/8290/
• CommitID: b349762
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[ryanbogan]

@reta I believe all of your suggestions have been addressed and the PR is ready for your review again - thanks for the feedback!

[ryanbogan]

@reta All comments are addressed again. The PR is ready for your re-review.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.backwards.MixedClusterClientYamlTestSuiteIT.test {p0=search.aggregation/20_terms/string profiler via global ordinals}

• URL: https://build.ci.opensearch.org/job/gradle-check/8327/
• CommitID: d80cfd4
  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]

@reta All comments are addressed again. The PR is ready for your re-review.

Thanks @ryanbogan , I have only 2 concerns: #5597 (comment) and #5597 (comment) (I believe we could improve there)

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/8351/
• CommitID: be2a74b

[ryanbogan]

@reta Both concerns are addressed now.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/8365/
• CommitID: a66cfd5

[reta]

@reta Both concerns are addressed now.

@ryanbogan LGTM, thanks for working this through, I would appreciate second pair of eyes (@owaiskazi19 @dbwiddis) since this pull request is certainly part of larger change.

[opensearch-trigger-bot]

The backport to 2.x failed:

The process '/usr/bin/git' failed with exit code 128

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add ../.worktrees/backport-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/backport-2.x
# Create a new branch
git switch --create backport/backport-5597-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 da94dbb94e16a9766049006e666b02dd89b5bf7e
# Push it to GitHub
git push --set-upstream origin backport/backport-5597-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-5597-to-2.x.