feat(bedrock_agent): add new Amazon Bedrock Agents Functions Resolver

[anafalcao]

Issue number:
#6300

Summary

This PR introduces support for Bedrock Agents Functions, providing the user a similar experience from the current Bedrock Agents with OpenAPI Resolver.

Changes

• Bedrock Agent Functions data class
• BedrockFunctionsResponseBuilder
• BedrockAgentFunctionResolver
• Optional response fields - sessionAttributes, promptSessionAttributes, knowledgeBasesConfiguration
• Parser
• Additional validations
• name on Tool decorator
• Documentation with examples

User experience

from aws_lambda_powertools.event_handler import BedrockAgentFunctionResolver
from aws_lambda_powertools.utilities.typing import LambdaContext

app = BedrockAgentFunctionResolver()

@app.tool(name="currentTime", description="Gets the current UTC time")
def get_current_time():
    ... 
@app.tool(description="Greets the user using name")
def greet_user(name):
...
@app.tool(description="Add two numbers")
def simple_calculator(a, b, operation):
...
def lambda_handler(event: dict, context: LambdaContext) → dict:
    return app.resolve(event, context)

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.

[codecov]

Codecov Report

Attention: Patch coverage is 97.98658% with 3 lines in your changes missing coverage. Please review.

Project coverage is 96.14%. Comparing base (24d6b4a) to head (54a7edf).
Report is 8 commits behind head on develop.

Files with missing lines	Patch %	Lines
...powertools/event_handler/bedrock_agent_function.py	96.00%	1 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6564      +/-   ##
===========================================
+ Coverage    96.12%   96.14%   +0.02%     
===========================================
  Files          253      255       +2     
  Lines        12104    12251     +147     
  Branches       902      912      +10     
===========================================
+ Hits         11635    11779     +144     
- Misses         369      370       +1     
- Partials       100      102       +2     

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[leandrodamascena]

Hello @anafalcao! I finished the first review and we need to fix the parameters part before proceeding with another review. Can you please work on that?

[leandrodamascena]

A critical part of this agent's workflow is passing parameters to functions. These parameters contain values ​​that will be useful for the function in question. In this discussion, we talk about this:

Support for injecting parameters into the function signature.

Can you pls add this support?

[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

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

See analysis details on SonarQube Cloud

[anafalcao]

Hello @anafalcao! I finished the first review and we need to fix the parameters part before proceeding with another review. Can you please work on that?

Hey @leandrodamascena ! Thank you so much for all the feedbacks, I pushed a new commit addressing them.