Fix issues with AI APIs

[PasanT9]

• Handle remaining token count metadata misssing scenario
• Set default configuration when api-manager.xml configurations are missing

[coderabbitai]

📝 Walkthrough

Walkthrough

This pull request enhances the handleSuccessfulResponse method in the AIAPIMediator class by introducing a null check for the header related to the remaining token count, preventing potential runtime exceptions. Additionally, it adds two constants, DEFAULT_REQUEST_TIMEOUT and DEFAULT_FAILOVER_ENDPOINT_LIMIT, to the AIAPIConfigurationsDTO class, and initializes relevant configuration fields with these constants to improve default value management. There are no modifications to public API declarations.

Changes

File Path	Summary of Changes
components/apimgt/.../mediators/AIAPIMediator.java	Added a null check for the remaining token count header in the handleSuccessfulResponse method to avoid parsing errors.
components/apimgt/.../dto/ai/AIAPIConfigurationsDTO.java	Introduced constants DEFAULT_REQUEST_TIMEOUT and DEFAULT_FAILOVER_ENDPOINT_LIMIT; updated field initializations in both the main and nested FailoverConfigurations classes.

Possibly Related PRs

• Refactor AI API policy Gateway implementation #13007: The changes in the main PR regarding the handleSuccessfulResponse method in the AIAPIMediator class, which involve enhancements to failover handling, are related to the modifications in the retrieved PR that also focus on failover configurations and their management within the API context. Both PRs address failover logic, indicating a direct connection at the code level.

Suggested Reviewers

• tgtshanika
• chamilaadhi
• dushaniw
• Arshardh
• AnuGayan

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📜 Recent review details

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📥 Commits

Reviewing files that changed from the base of the PR and between 72813f1 and 9a1fdcd.

📒 Files selected for processing (1)

• components/apimgt/org.wso2.carbon.apimgt.gateway/src/main/java/org/wso2/carbon/apimgt/gateway/mediators/AIAPIMediator.java (4 hunks)

🚧 Files skipped from review as they are similar to previous changes (1)

• components/apimgt/org.wso2.carbon.apimgt.gateway/src/main/java/org/wso2/carbon/apimgt/gateway/mediators/AIAPIMediator.java

⏰ Context from checks skipped due to timeout of 90000ms (6)

• GitHub Check: build-product (4, group4)
• GitHub Check: build-product (3, group3)
• GitHub Check: build-product (2, group2)
• GitHub Check: build-carbon
• GitHub Check: build-product (1, group1)
• GitHub Check: run-benchmark-test

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