feat(event_handler): Ensure Bedrock Agents resolver works with Pydantic v2

[leandrodamascena]

Issue number: #4196

Summary

Changes

This PR addresses the compatibility issue between Bedrock Agents and the OpenAPI schemas generated by Pydantic v2. Bedrock Agents only accepts OpenAPI version 3.0, whereas Pydantic v2 generates schemas that are valid for OpenAPI 3.1.

Changes

• Added functionality to convert OpenAPI 3.1 schemas to 3.0 compatible versions
• Enforced OpenAPI 3.0.3 schema output for Bedrock Agent compatibility
• Override get_openapi_json_schema method in the BedrockAgentResolver class to handle the conversion process and make it strict to BedrockAgent resolver.

User experience

from time import time
from typing import Optional

from aws_lambda_powertools import Logger
from aws_lambda_powertools.event_handler import BedrockAgentResolver
from aws_lambda_powertools.utilities.typing import LambdaContext

logger = Logger()
app = BedrockAgentResolver()


@app.get("/current_time", description="Gets the current time in seconds")
def current_time() -> Optional[int]:
    return int(time())


@logger.inject_lambda_context
def lambda_handler(event: dict, context: LambdaContext):
    return app.resolve(event, context)


if __name__ == "__main__": 
    print(app.get_openapi_json_schema())

Checklist

If your change doesn't seem to apply, please leave them unchecked.

• Meet tenets criteria
• I have performed a self-review of this change
• Changes have been tested
• Changes are documented
• PR title follows conventional commit semantics

Is this a breaking change?

RFC issue number:

Checklist:

• Migration process documented
• Implement warnings (if it can live side by side)

Acknowledgment

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

Disclaimer: We value your time and bandwidth. As such, any pull requests created on non-triaged issues might not be successful.

[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
12.6% Duplication on New Code

See analysis details on SonarCloud