Struct HostState 

pub struct HostState {
    pub limits: Limits,
    pub log_lines: Vec<(LogLevel, String)>,
    pub store_limits: StoreLimits,
    pub resource_table: ResourceTable,
    pub wasi: WasiCtx,
}

Per-invocation state held in wasmtime::Store<HostState>.

The wasi field is a deny-all WasiCtx: no preopens, no environment, no inherited stdio. We wire wasmtime_wasi into the linker only because the wasm32-wasip2 rust libstd unconditionally imports WASI interfaces (clocks, filesystem, stdio, exit, …). With a deny-all context, calls fail at runtime — same outcome as a trap, but using the well-tested wasmtime-wasi resource handling instead of hand-rolled stubs.

Fields

limits: Limits

log_lines: Vec<(LogLevel, String)>

store_limits: StoreLimits

resource_table: ResourceTable

wasi: WasiCtx

Trait Implementations

impl Debug for HostState

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

Formats the value using the given formatter.

impl Host for HostState

impl Host for HostState

impl Host for HostState

fn log(&mut self, level: LogLevel, message: String) -> Result<()>

Emit a structured log line. The host is free to filter or buffer.

fn case_convert(&mut self, input: String, style: CaseStyle) -> Result<String>

Convert an identifier between case styles. Provided as a host import so every plugin doesn’t link its own case-conversion crate.

impl Host for HostState

impl Host for HostState

impl Host for HostState

fn log(&mut self, level: LogLevel, message: String) -> Result<()>

Emit a structured log line. The host is free to filter or buffer.

fn case_convert(&mut self, input: String, style: CaseStyle) -> Result<String>

Convert an identifier between case styles. Provided as a host import so every plugin doesn’t link its own case-conversion crate.

impl WasiView for HostState

fn ctx(&mut self) -> WasiCtxView<'_>

Yields mutable access to the WasiCtx configuration used for this context.