Struct SessionData 

pub struct SessionData { /* private fields */ }

Wasmtime Store data type for the rpc eval channel. Carries the per-session user context (ScriptCtx) so native fns reach caller.data().ctx().user_id directly. The legacy EvalContext capture-protocol companion field retired alongside the capture imports in P4 A6.c — nomi-eval now returns its final value via the function’s (ref null any) return slot.

Native fns are async (Linker::func_wrap_async) — they .await server::command::* futures directly on whatever runtime drives the surrounding Session::handle_form call. No owned runtime, no spawn_blocking, no thread-local pool concerns.

Implementations

impl SessionData

pub fn ctx(&self) -> &ScriptCtx

pub fn with_draft<F>(&self, f: F) -> Result<()>

where F: FnOnce(&mut TransactionDraft),

Mutates the draft accumulator if armed (render path). Returns an error on the normal eval path where no draft is present — a draft native reaching a non-render Store is a wiring bug, surfaced as a trap.

pub fn into_draft(self) -> Option<TransactionDraft>

Consumes the accumulated draft, if any. Called after a render run via store.into_data().

pub fn push_output(&self, msg: &str)

Appends a script-output line to the per-request buffer. Called by the env.log host fn. A poisoned lock is swallowed (output capture is best-effort telemetry, never a reason to fail an eval).