Struct Engine 

pub struct Engine { /* private fields */ }

The core WebAssembly engine for executing components and workloads.

The Engine is responsible for compiling WebAssembly components, managing their lifecycle, and providing the runtime environment for execution. It wraps a wasmtime engine with additional functionality for workload management.

Implementations

impl Engine

pub fn builder() -> EngineBuilder

Creates a new EngineBuilder for configuring an engine.

Returns

A default EngineBuilder that can be customized with additional configuration.

pub fn inner(&self) -> &Engine

Gets a reference to the inner wasmtime engine.

This provides access to the underlying wasmtime engine for advanced use cases.

Returns

A reference to the internal wasmtime::Engine.

pub fn initialize_workload( &self, id: impl AsRef<str>, workload: Workload, ) -> Result<UnresolvedWorkload>

Initializes a workload by validating and preparing all its components.

This function takes a workload definition and prepares it for execution by:

• Validating service components (if present)
• Setting up volumes (both host path and empty directory types)
• Initializing all components with their resource configurations

Arguments

• id - Unique identifier for this workload instance
• workload - The workload configuration containing components, services, and volumes

Returns

An UnresolvedWorkload that still needs to be bound to plugins and resolved before execution.

Errors

Returns an error if:

• Service component validation fails
• Volume paths don’t exist or aren’t accessible
• Component initialization fails

Trait Implementations

impl Clone for Engine

fn clone(&self) -> Engine

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Engine

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.