Retry Grpc Connection

[raphael-goetz]

Resolves: #222

[github-actions]

GitLab Pipeline Action

General information

Link to pipeline: https://gitlab.com/code0-tech/development/aquila/-/pipelines/2300693667

Status: Passed
Duration: 1 minutes

[Copilot]

Pull request overview

This PR implements retry logic for gRPC connections to the Sagittarius service, addressing issue #222 where Aquila would panic immediately if Sagittarius was unavailable. The changes introduce a retry mechanism with exponential backoff, readiness tracking, and request interception to gracefully handle service unavailability.

Changes:

• Added retry logic with exponential backoff (up to 10 retries) for establishing gRPC connections to Sagittarius
• Introduced application readiness tracking to reject requests when Sagittarius is unavailable
• Refactored client implementations to use shared Channel instances instead of individual connections
• Enhanced logging to be less verbose (changed info to debug) and more informative about connection states

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
src/sagittarius/retry.rs	New module implementing channel creation with retry logic and exponential backoff
src/configuration/state.rs	New module for tracking Sagittarius readiness state using atomic booleans
src/configuration/mod.rs	Exports the new state module
src/sagittarius/mod.rs	Exports the new retry module
src/main.rs	Integrates retry logic and readiness tracking, implements reconnection loop for flow stream
src/server/mod.rs	Refactored to use shared channel and adds interceptor to reject requests when service is not ready
src/sagittarius/data_type_service_client_impl.rs	Updated to use Channel parameter instead of URL, improved logging
src/sagittarius/flow_type_service_client_impl.rs	Updated to use Channel parameter instead of URL, improved logging
src/sagittarius/runtime_function_service_client_impl.rs	Updated to use Channel parameter instead of URL, improved logging
src/sagittarius/flow_service_client_impl.rs	Updated to track readiness state and return Result for better error handling
src/server/data_type_service_server_impl.rs	Changed log level from info to debug, improved log formatting
src/server/flow_type_service_server_impl.rs	Changed log level from info to debug, improved log formatting
src/server/runtime_function_service_server_impl.rs	Changed log level from info to debug, improved log formatting

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