Struct Prepared 

pub struct Prepared { /* private fields */ }

Interactive submission keeps the key away from the participant. It does not, on its own, make a dishonest participant harmless.

Implementations

impl Prepared

pub fn hash(&self) -> &[u8]

The hash to sign.

pub fn transaction(&self) -> Option<&PreparedTransaction>

The interpreted transaction, for a caller that wants to inspect what it is about to authorize before signing it.

pub fn command_id(&self) -> &str

The change ID’s command component, carried from preparation.

pub fn change_id(&self) -> ChangeId

The identity the participant de-duplicates this submission by — (user_id, act_as, command_id). Keep it: it is what CantonClient::await_completion recovers an ambiguous execute by, and Executable is consumed on execute.

pub fn act_as(&self) -> &[String]

The parties that must sign.

pub fn hashing_details(&self) -> Option<&str>

What the participant says about how it hashed, when preparation asked for it with Prepare::with_verbose_hashing.

For troubleshooting a hash mismatch and nothing else: the proto is explicit that neither the format nor the content is stable, so this is a string to read, never one to parse.

pub fn cost_estimation(&self) -> Option<&CostEstimation>

The participant’s estimate of what executing this will cost in traffic, unless preparation turned the estimate off.

pub fn hashing_scheme_version(&self) -> HashingSchemeVersion

The hashing scheme the participant hashed under, echoed back with the signature so it verifies under the same one.

pub async fn sign_with(self, signer: &dyn Signer) -> Result<Executable>

Sign as the single acting party.

Errors

Error::InvalidRequest if the submission acts as more than one party — then it is ambiguous which one this signature is for, and sign_as says so explicitly.

pub async fn sign_as( self, party: &str, signer: &dyn Signer, ) -> Result<Executable>

Sign on behalf of party.

Errors

Error::InvalidRequest if party is not among the acting parties — the participant would reject the execution, and catching it here says which party was meant. Otherwise, whatever the signer returns.

pub fn read_as(&self) -> &[String]

Every party this reads as, beyond those acting.

Trait Implementations

impl Clone for Prepared

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Prepared

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

Formats the value using the given formatter.