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IncomingMessage

molo::message_channel

Struct IncomingMessage

pub struct IncomingMessage { /* private fields */ }

Expand description

A message received from the channel: the text content, plus a reply slot that only questions have.

Returned by each channel’s receive method. Check IncomingMessage::wants_reply first — for question messages, send the reply back with IncomingMessage::reply; notification messages have no reply slot.

See MpscChannel for a complete usage example.

Implementations§

impl IncomingMessage

pub fn text(&self) -> &str

The message text.

pub fn wants_reply(&self) -> bool

Whether this is a question (expects a reply); notifications return false.

Only messages that return true may call IncomingMessage::reply.

pub fn reply(self, answer: String) -> Result<(), ChannelError>

Sends back a reply; the message is consumed in the process, so it can only be replied to once.

§Errors

ChannelError::NoReply — this is a notification message and does not expect a reply;
ChannelError::Closed — the asker has left (e.g. ask was cancelled or timed out), so nobody will receive the reply.

Trait Implementations§

impl Debug for IncomingMessage

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

impl !RefUnwindSafe for IncomingMessage

impl !UnwindSafe for IncomingMessage

impl Freeze for IncomingMessage

impl Send for IncomingMessage

impl Sync for IncomingMessage

impl Unpin for IncomingMessage

impl UnsafeUnpin for IncomingMessage

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> PolicyExt for T
where T: ?Sized,

fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more

fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more

impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

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Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more