Struct MessageContext

pub struct MessageContext { /* private fields */ }

Context of currently processing incoming message.

Implementations

impl MessageContext

pub fn new( dispatch: IncomingDispatch, program_id: ProgramId, settings: ContextSettings, ) -> Option<Self>

Create new message context. Returns None if outgoing messages bytes limit exceeded.

pub fn settings(&self) -> &ContextSettings

Getter for inner settings.

pub fn reply_sent(&self) -> bool

Return bool defining was reply sent within the execution.

pub fn init_program( &mut self, packet: InitPacket, delay: u32, ) -> Result<(MessageId, ProgramId), Error>

Send a new program initialization message.

Generates a new message from provided data packet. Returns message id and generated program id.

pub fn send_commit( &mut self, handle: u32, packet: HandlePacket, delay: u32, reservation: Option<ReservationId>, ) -> Result<MessageId, Error>

Send a new program initialization message.

Generates message from provided data packet and stored by handle payload. Returns message id.

pub fn send_init(&mut self) -> Result<u32, Error>

Provide space for storing payload for future message creation.

Returns it’s handle.

pub fn send_push(&mut self, handle: u32, buffer: &[u8]) -> Result<(), Error>

Pushes payload into stored payload by handle.

pub fn send_push_input( &mut self, handle: u32, range: CheckedRange, ) -> Result<(), Error>

Pushes the incoming buffer/payload into stored payload by handle.

pub fn check_input_range( &self, offset: u32, len: u32, ) -> Result<CheckedRange, Error>

Check if provided offset/len are correct for the current payload limits. Result CheckedRange instance is accepted by send_push_input/reply_push_input and has the method len allowing to charge gas before the calls.

pub fn reply_commit( &mut self, packet: ReplyPacket, reservation: Option<ReservationId>, ) -> Result<MessageId, ExtError>

Send reply message.

Generates reply from provided data packet and stored reply payload. Returns message id.

pub fn reply_push(&mut self, buffer: &[u8]) -> Result<(), ExtError>

Pushes payload into stored reply payload.

pub fn reply_destination(&self) -> ProgramId

Return reply destination.

pub fn reply_push_input(&mut self, range: CheckedRange) -> Result<(), ExtError>

Pushes the incoming message buffer into stored reply payload.

pub fn wake(&mut self, waker_id: MessageId, delay: u32) -> Result<(), Error>

Wake message by it’s message id.

pub fn reply_deposit( &mut self, message_id: MessageId, amount: u64, ) -> Result<(), MessageError>

Create deposit to handle future reply on message id was sent.

pub fn current(&self) -> &IncomingMessage

Current processing incoming message.

pub fn payload_mut(&mut self) -> &mut Payload

Mutable reference to currently processed incoming message.

pub fn program_id(&self) -> ProgramId

Current program’s id.

pub fn drain(self) -> (ContextOutcome, ContextStore)

Destructs context after execution and returns provided outcome and store.

Trait Implementations

impl Debug for MessageContext

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

Formats the value using the given formatter.