Module Air 

Client for the Air background daemon (updates and crypto signing).

Air (Air Integration Module)

RESPONSIBILITIES:

• Provides gRPC client connectivity to the Air daemon service
• Implements Air service methods for:
  • Update management and distribution
  • Authentication and credential management
  • File indexing and search operations
  • System monitoring and metrics collection
• Handles connection management and error translation to CommonError
• Wraps client in Arc for shared access across the application

ARCHITECTURAL ROLE:

• Integration point with the Air background service (daemon)
• Used by multiple Mountain components:
• UpdateService for self-updates
  • SearchProvider for file search
  • SecretProvider for secret storage
• Connection is optional; Mountain can function without Air (graceful degradation)
• Service discovery and health checking via gRPC

MODULE STRUCTURE:

• AirClient - gRPC client wrapper with connection management
• AirServiceProvider - high-level provider with automatic request ID generation
• AirServiceTypesStub - stub types for when Air library is unavailable (legacy)

CONNECTION PATTERNS:

• Uses tonic gRPC client for transport
• Connection establishment via connect() method
• Health checking with timeout protection
• Thread-safe operations via Arc<AirClient>

ERROR HANDLING:

• All gRPC errors translated to CommonError::IPCError
• Connection failures logged and return error
• Service unavailability handled gracefully (return error, caller decides fallback)

PERFORMANCE:

• gRPC channels are expensive; reuse via Arc<AirClient>
• Non-blocking async operations via tokio
• Request ID generation for tracing

VS CODE REFERENCE:

• vs/platform/telemetry/common/telemetry.ts - telemetry/analytics service pattern
• vs/platform/update/common/update.ts - update service integration
• vs/workbench/services/search/common/search.ts - search service architecture

Planned Work

• Connection retry with exponential backoff
• Connection pooling for concurrent requests
• Request caching for frequently accessed data (auth tokens)
• Metrics collection for Air service calls (latency, success rate, errors)
• Fallback strategies when Air is unavailable (local search)
• Support for multiple Air daemons (load balancing/failover)
• Configurable request timeouts per operation type
• Request/response logging for debugging
• Telemetry for Air service health and usage
• Bidirectional streaming for real-time updates MODULE CONTENTS:
• Re-exports: AirClient, AirServiceProvider, response types, and helper functions

Modules

AirClient

AirClient

AirServiceProvider

AirServiceProvider

AirServiceTypesStubDeprecated

Air-integration type stubs. Twenty children: one per request/response DTO, the placeholder AirClientType::Struct, and the DEFAULT_AIR_SERVER_ADDRESS::Const server-address constant. Every AirClientType::Struct method returns “feature not implemented” until the real AirLibrary client lands behind --features AirIntegration.