Struct CommandEnvelope 

pub struct CommandEnvelope {
    pub format_version: u32,
    pub command_id: [u8; 16],
    pub command_type: u32,
    pub payload: Vec<u8>,
    pub payload_sha256: [u8; 32],
}

The versioned, checksummed form of every persisted command.

Fields

format_version: u32

Envelope format version; see COMMAND_ENVELOPE_FORMAT_VERSION.

command_id: [u8; 16]

Unique identifier of this command (for idempotent apply).

command_type: u32

Discriminant of the payload command; numbers are never reused.

payload: Vec<u8>

Schema-evolution-safe encoded command payload. The envelope never interprets these bytes; unknown optional payload fields are preserved or ignored safely by the payload decoder.

payload_sha256: [u8; 32]

SHA-256 over version, type, length, and payload.

Implementations

impl CommandEnvelope

pub fn new(command_type: u32, command_id: [u8; 16], payload: Vec<u8>) -> Self

Builds an envelope at the current format version, computing the checksum.

pub fn checksum( format_version: u32, command_type: u32, payload: &[u8], ) -> [u8; 32]

Computes the checksum covering type, version, length, and payload.

pub fn verify(&self) -> Result<(), EnvelopeError>

Fails closed unless the version is supported and the checksum matches.

pub fn encode(&self) -> Vec<u8>

Serializes to the canonical deterministic encoding: equal envelopes always produce byte-identical output.

pub fn decode(bytes: &[u8]) -> Result<Self, EnvelopeError>

Parses one envelope, verifying version and checksum (fails closed).

Trait Implementations

impl Clone for CommandEnvelope

fn clone(&self) -> CommandEnvelope

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CommandEnvelope

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CommandEnvelope

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for CommandEnvelope

impl PartialEq for CommandEnvelope

fn eq(&self, other: &CommandEnvelope) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for CommandEnvelope

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for CommandEnvelope