Using generated Azure HttpPipeline for the openai-java SDK

[jpalvarezl]

Related issue: #47540

• Propagating the changes from: https://github.com/Azure/azure-sdk-for-java/pull/47416/changes#diff-4f68ef3c85f4a95ac69c6936138218d6c2ac5885bde7bde23e0ef1ab3e40e02c into the azure-ai-projects folder

[Copilot]

Pull request overview

This pull request propagates changes from PR #47416 to integrate Azure's HttpPipeline with the OpenAI Java SDK for the azure-ai-projects module. The implementation adapts the Azure HTTP pipeline to work with OpenAI SDK clients, enabling the use of Azure's built-in retry policies, authentication, telemetry, and logging.

Key Changes:

• Introduced HttpClientHelper to bridge Azure HttpPipeline with OpenAI's HttpClient interface
• Added AzureHttpResponseAdapter to translate Azure responses to OpenAI format
• Modified EvaluationsClient builders to use the Azure HttpPipeline instead of OpenAI's native HTTP handling

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 5 comments.

File	Description
HttpClientHelper.java (azure-ai-projects)	New adapter class that wraps Azure HttpPipeline to implement OpenAI HttpClient interface, handling request/response translation and exception mapping
AzureHttpResponseAdapter.java (azure-ai-projects)	New adapter that exposes Azure HttpResponse as OpenAI HttpResponse for seamless integration
AIProjectClientBuilder.java	Updated to inject HttpClientHelper into Evaluations clients, removed redundant user-agent and timeout configuration (now handled by pipeline), and set maxRetries to 0 to prevent duplicate retry logic
HttpClientHelper.java (azure-ai-agents)	Enhanced exception mapping to properly handle AzureException by unwrapping the cause