Fallback to Haiku if service unavailable

[elie222]

Summary by CodeRabbit

• New Features

  • Introduced a new environment variable for backup model usage.
  • Added new model configurations for haiku generation.
  • Enhanced error handling with a new service unavailability check.
  • Implemented a backup model mechanism for service calls.

• Bug Fixes

  • Updated default values for existing model configurations.

• Refactor

  • Improved function signatures for better clarity and maintainability.
  • Organized internal logic for chat completion functions.

• Documentation

  • Added pricing information for new models in the usage records.

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[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

This pull request introduces enhancements to the web application's AI model configuration and error handling. The changes primarily focus on expanding environment variables for AI models, adding a new Claude 3.5 Haiku model, implementing a backup model mechanism, and improving error handling strategies. The modifications span multiple utility files, introducing more robust and flexible AI service interactions with better resilience against service unavailability.

Changes

File	Changes
apps/web/env.ts	- Added USE_BACKUP_MODEL boolean environment variable - Updated NEXT_PUBLIC_BEDROCK_SONNET_MODEL default value - Introduced NEXT_PUBLIC_BEDROCK_HAIKU_MODEL
apps/web/utils/error.ts	- Added isServiceUnavailableError function to detect service unavailability
apps/web/utils/llms/config.ts	- Added CLAUDE_3_5_HAIKU_BEDROCK model constant
apps/web/utils/llms/index.ts	- Refactored chatCompletionObject and chatCompletionTools with new type definitions - Introduced withBackupModel utility function - Modified streamText call in chatCompletionStream
apps/web/utils/usage.ts	- Added pricing information for new Haiku models

Sequence Diagram

sequenceDiagram
    participant Client
    participant MainService
    participant BackupService
    
    Client->>MainService: Request AI Completion
    alt Service Available
        MainService-->>Client: Return Completion
    else Service Unavailable
        MainService->>BackupService: Retry with Backup Model
        BackupService-->>Client: Return Completion
    end

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Possibly related PRs

• Add copilot plan #204: Adds new environment variables in apps/web/env.ts
• Generate groups with AI prompt #244: Updates to apps/web/utils/llms/index.ts related to AI model handling

Poem

🐰 In the realm of code, where models dance and play,
A backup plan springs forth today!
Claude Haiku joins the grand parade,
With resilience that won't fade away!
Hop, hop, hurrah for AI's new way! 🤖

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 57b91b6 and 3497761.

📒 Files selected for processing (5)

• apps/web/env.ts (3 hunks)
• apps/web/utils/error.ts (1 hunks)
• apps/web/utils/llms/config.ts (1 hunks)
• apps/web/utils/llms/index.ts (5 hunks)
• apps/web/utils/usage.ts (1 hunks)

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