Module RPC 

Mountain RPC Services

☀️ 🟢 MOUNTAIN_SKY_ONLY - Core RPC service implementations

This module contains the complete RPC services for Mountain’s Spine contract. All services support extension hosts based on their feature gates:

Service Classification by Support Level

🟢 GREEN - Full Support (All Hosts)

• EchoAction: Bidirectional actions, host registration, routing
• Commands: Command registration and execution
• Workspace: File operations, document management
• Configuration: Configuration read/write

🟡 YELLOW - Partial Support (Grove, Cocoon)

• Windows: Webviews, documents (limited in Sky)
• Tree Views: Tree data providers (read-only in Sky)
• Language Features: Completion, diagnostics (basic in Sky)

🔴 RED - Cocoon Only Services

• Terminals: Terminal emulation and pseudo-terminals
• Debug: Debug adapter protocol integration
• SCM: Source control management (git)
• Processes: Child process execution

🔵 BLUE - WASM Optimized

• Document Operations: Zero-copy memory access in WASM
• File Operations: Parallel search in WASM

Module Structure

Services are split into atomic submodules for granular feature gates:

RPC/
├── EchoAction/ # ☀️ 🟢 Central EchoAction system
├── Commands/ # ☀️ 🟢 Command registration
│ └── Validation/ # Input validation
├── Workspace/ # ☀️ 🟢 File/workspace operations
├── Configuration/ # ☀️ 🟢 Configuration management
├── Windows/ # ☀️ 🟡 Window and document services
├── Terminals/ # ☀️ 🔴 Terminal services (Cocoon only)
├── Debug/ # ☀️ 🔴 Debug protocol (Cocoon only)
├── SCM/ # ☀️ 🔴 Source control (Cocoon only)
├── Processes/ # ☀️ 🔴 Child processes (Cocoon only)
├── Telemetry/ # OTEL integration
│ ├── Spans/ # Span management
│ └── Metrics/ # Metrics recording
└── types/ # Shared types

Re-exports

pub use CocoonService::CocoonServiceImpl;

pub use echo_action::EchoActionServer;

pub use echo_action::ExtensionHostRegistry;

pub use echo_action::ExtensionRouter;

pub use commands::CommandService;

pub use commands::CommandValidation;

pub use workspace::WorkspaceService;

pub use configuration::ConfigurationService;

pub use windows::WindowService;

pub use terminals::TerminalService;

pub use debug::DebugService;

pub use scm::SCMService;

pub use processes::ProcessService;

pub use telemetry::TelemetryService;

pub use telemetry::metrics::ServiceMetrics;

pub use telemetry::spans::TraceSpan;

Modules

CocoonService

CocoonServiceImpl Implementation

commands

Commands RPC Service

configuration

Configuration RPC Service

debug

Debug Protocol RPC Service

echo_action

EchoAction RPC Service

processes

Child Processes RPC Service

scm

Source Control Management (SCM) RPC Service

telemetry

Telemetry RPC Service

terminals

Terminals RPC Service

types

Shared RPC Types

vine

Vine RPC Types

windows

Windows RPC Service

workspace

Workspace RPC Service