Struct WasmHostState 

pub struct WasmHostState {

    pub config: Arc<RwLock<AppConfig>>,
    pub pipeline: SharedPipeline,
    pub runtime_handle: Handle,
    pub process_manager: Arc<ProcessManager>,
    pub vkey_store: Arc<VirtualKeyStore>,
    pub kv_store: Arc<Mutex<HashMap<String, String>>>,
    pub caller_package_name: String,
    pub package_dir: String,
    pub permissions: PackagePermissions,
    pub package_map: PackageMap,
    pub package_aliases: Arc<Mutex<HashMap<String, String>>>,
    pub call_depth: Arc<Mutex<u32>>,
    pub app_state: Arc<Mutex<Option<AppState>>>,
}

State shared across all WASM packages via Extism host functions. Each package instance gets its own clone with a unique caller_package_name. Shared resources (kv_store, package_map, etc.) are behind Arc so clones share them.

Fields

config: Arc<RwLock<AppConfig>>

pipeline: SharedPipeline

runtime_handle: Handle

process_manager: Arc<ProcessManager>

vkey_store: Arc<VirtualKeyStore>

kv_store: Arc<Mutex<HashMap<String, String>>>

caller_package_name: String

Name of the package that owns this UserData instance.

package_dir: String

Filesystem directory the owning package was loaded from (official/ or installed/ — whichever the index resolved). Exposed to the guest as the WEFT_PACKAGE_DIR env var so package resources (skills/, mcp/, assets/) can be located relative to the package rather than a hardcoded repo path.

permissions: PackagePermissions

Permissions declared by the owning package’s manifest ([permissions] in package.toml).

package_map: PackageMap

Direct access to all loaded plugins for cross-package calls.

package_aliases: Arc<Mutex<HashMap<String, String>>>

call_depth: Arc<Mutex<u32>>

Call depth counter to prevent infinite recursion in cross-package calls.

app_state: Arc<Mutex<Option<AppState>>>

Trait Implementations

impl Clone for WasmHostState

fn clone(&self) -> WasmHostState

Returns a duplicate of the value.

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

Performs copy-assignment from source.