Struct async_zmq_types::Multipart
source · pub struct Multipart { /* private fields */ }
Expand description
This type is used for receiving and sending messages in Multipart groups. An application could make using this easier by implementing traits as follows:
extern crate zmq;
extern crate tokio_zmq;
use tokio_zmq::Multipart;
#[derive(Debug)]
enum Error {
NotEnoughMessages,
TooManyMessages,
}
struct Envelope {
filter: zmq::Message,
address: zmq::Message,
body: zmq::Message,
}
impl Envelope {
fn from_multipart(mut multipart: Multipart) -> Result<Self, Error> {
let filter = multipart.pop_front().ok_or(Error::NotEnoughMessages)?;
let address = multipart.pop_front().ok_or(Error::NotEnoughMessages)?;
let body = multipart.pop_front().ok_or(Error::NotEnoughMessages)?;
if !multipart.is_empty() {
return Err(Error::TooManyMessages);
}
Ok(Envelope {
filter,
address,
body,
})
}
}
impl From<Envelope> for Multipart {
fn from(envelope: Envelope) -> Self {
let mut multipart = Multipart::new();
multipart.push_back(envelope.filter);
multipart.push_back(envelope.address);
multipart.push_back(envelope.body);
multipart
}
}
fn main() {
let mut multipart: Multipart = Multipart::new();
multipart.push_back(zmq::Message::from_slice(b"FILTER: asdf").unwrap());
multipart.push_back(zmq::Message::from_slice(b"some.address").unwrap());
multipart.push_back(zmq::Message::from_slice(b"Some content").unwrap());
let envelope = Envelope::from_multipart(multipart).unwrap();
let multipart2: Multipart = envelope.into();
}
Implementations
sourceimpl Multipart
impl Multipart
pub fn new() -> Self
pub fn into_inner(self) -> VecDeque<Message>
pub fn get(&self, index: usize) -> Option<&Message>
pub fn pop_front(&mut self) -> Option<Message>
pub fn pop_back(&mut self) -> Option<Message>
pub fn push_front(&mut self, msg: Message)
pub fn push_back(&mut self, msg: Message)
pub fn is_empty(&self) -> bool
pub fn iter(&self) -> Iter<'_, Message>
pub fn len(&self) -> usize
pub fn iter_mut(&mut self) -> IterMut<'_, Message>
pub fn drain<R>(&mut self, range: R) -> Drain<'_, Message>where
R: RangeBounds<usize>,
Trait Implementations
sourceimpl<'a> IntoIterator for &'a Multipart
impl<'a> IntoIterator for &'a Multipart
sourceimpl<'a> IntoIterator for &'a mut Multipart
impl<'a> IntoIterator for &'a mut Multipart
Auto Trait Implementations
impl RefUnwindSafe for Multipart
impl Send for Multipart
impl Sync for Multipart
impl Unpin for Multipart
impl UnwindSafe for Multipart
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more