[Bugfix] fix dynamic config

[zerofishnoodles]

Fix dynamic config

• add default value
• pass app parameter

FIX #596 (link existing issues this PR will resolve)

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[gemini-code-assist]

Summary of Changes

Hello @zerofishnoodles, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a bug in the dynamic configuration handling by ensuring that the application instance is correctly passed during service discovery reconfiguration and by providing default values for optional parameters in the StaticServiceDiscovery constructor. These changes aim to improve the robustness and flexibility of the dynamic configuration system.

Highlights

• Dynamic Configuration Parameter Passing: I've updated the reconfigure_service_discovery calls within DynamicRouterConfig to explicitly pass the app=self.app parameter. This ensures that the application instance is correctly provided when reconfiguring both static and Kubernetes service discovery types.
• Service Discovery Parameter Defaults: I've added default None or False values to several optional parameters in the __init__ method of StaticServiceDiscovery. This includes aliases, model_labels, model_types, static_backend_health_checks, prefill_model_labels, and decode_model_labels, making the constructor more robust and flexible when these optional arguments are not provided.

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[gemini-code-assist]

Code Review

This pull request fixes a bug in the dynamic configuration update logic by passing the app object during reconfiguration and adding default values for optional parameters in StaticServiceDiscovery. The changes are correct and address the issue for static service discovery. Adding default values to the StaticServiceDiscovery constructor enhances the robustness of the code.