[Persistence]: Backend implementation

[rubenthoms]

Adding:

• CosmosDB emulator as docker container and inital setup
• CosmosDatabase and CosmosContainer classes
• Stores for sessions, snapshots, and snapshot access logs
• Routers for persistence (sessions, snapshots, snapshot access logs)

Changing:

• Docker compose config: adding CosmosDB emulator container and adding startup dependency to primary container

[Anders2303]

The endpoints needed for the management modal are there, but they appear to be outdated, so you might have been looking at the wrong branch

Correct branch here

[Copilot]

Pull Request Overview

This PR implements the backend persistence layer for sessions, snapshots, and snapshot access logs using Azure Cosmos DB. It establishes database infrastructure, data stores with CRUD operations, and REST API endpoints supporting pagination, sorting, and filtering. The implementation includes CosmosDB emulator configuration for local development and proper error handling throughout the persistence layer.

Key changes:

• Added Cosmos DB emulator as a Docker container with health checks and automatic database setup
• Implemented data stores for sessions, snapshots, and snapshot access logs with comprehensive query capabilities
• Created REST API routers exposing persistence operations with proper authentication and background task support

Reviewed Changes

Copilot reviewed 29 out of 35 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
docker-compose.yml	Added CosmosDB emulator service with health checks and startup dependencies
backend_py/primary/pyproject.toml	Added azure-cosmos, aiohttp, and nanoid dependencies
backend_py/primary/primary/config.py	Added Cosmos DB connection configuration
backend_py/primary/primary/main.py	Integrated persistence router and database setup
backend_py/primary/primary/services/service_exceptions.py	Added DATABASE service type
backend_py/primary/primary/persistence/setup_local_database.py	Implemented local database initialization
backend_py/primary/primary/persistence/cosmosdb/*.py	Core database abstraction layer
backend_py/primary/primary/persistence/_store/.py	Store implementations for sessions, snapshots, and access logs
backend_py/primary/primary/routers/persistence/*.py	REST API endpoints for persistence operations
frontend/src/api/autogen/*.ts	Auto-generated API client code
frontend/src/modules/ModuleSerializedStateMap.ts	File deleted (auto-generated)

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[Copilot]

Pull Request Overview

Copilot reviewed 29 out of 35 changed files in this pull request and generated 4 comments.

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[sigurdp]

More or less good to go.
Approved with a few questions/suggestions

[Anders2303]

Looks good! Noted one very tiny thing, but I'll approve regardles