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mod cmd;
pub use cmd::StreamWorkerCmd;
mod consumer;
use consumer::StreamConsumer;
mod producer;
use producer::StreamProducer;
use crate::{
protocols::stream::responses::*, Address, Context, Message, Result, Route, Routed,
TransportMessage,
};
use core::{ops::Deref, time::Duration};
use ockam_core::compat::rand::{self, Rng};
use ockam_core::compat::string::String;
use ockam_core::{Decodable, RouteBuilder, TransportType};
pub const STREAM: TransportType = TransportType::new(16);
pub struct Stream {
ctx: Context,
interval: Duration,
forwarding_address: Option<Address>,
stream_service: String,
index_service: String,
client_id: Option<String>,
}
pub struct SenderAddress {
inner: Address,
}
impl SenderAddress {
pub fn to_route(&self) -> RouteBuilder {
Route::new().append(self.inner.clone())
}
}
impl Deref for SenderAddress {
type Target = Address;
fn deref(&self) -> &Self::Target {
&self.inner
}
}
impl From<SenderAddress> for Route {
fn from(addr: SenderAddress) -> Self {
Route::new().append(addr.inner).into()
}
}
pub struct ReceiverAddress {
ctx: Context,
_inner: Address,
}
impl ReceiverAddress {
pub async fn next<T: Message>(&mut self) -> Result<Routed<T>> {
let routed = self.ctx.receive_block::<StreamMessage>().await?.take();
let stream_msg = routed.as_body();
let (addr, local_msg) = routed.dissolve();
let transport = TransportMessage::decode(&stream_msg.data).unwrap();
T::decode(&transport.payload).map(|t| Routed::new(t, addr, local_msg))
}
}
impl Stream {
pub async fn new(ctx: &Context) -> Result<Self> {
ctx.new_detached(Address::random(STREAM))
.await
.map(|ctx| Self {
ctx,
interval: Duration::from_millis(250),
forwarding_address: None,
stream_service: "stream".into(),
index_service: "stream_index".into(),
client_id: None,
})
}
pub fn with_interval<D: Into<Duration>>(self, duration: D) -> Self {
Self {
interval: duration.into(),
..self
}
}
pub fn stream_service<S: Into<String>>(self, serv: S) -> Self {
Self {
stream_service: serv.into(),
..self
}
}
pub fn index_service<S: Into<String>>(self, serv: S) -> Self {
Self {
index_service: serv.into(),
..self
}
}
pub fn client_id<S: Into<String>>(self, client_id: S) -> Self {
Self {
client_id: Some(client_id.into()),
..self
}
}
pub fn with_recipient<A: Into<Address>>(self, addr: A) -> Self {
Self {
forwarding_address: Some(addr.into()),
..self
}
}
pub async fn connect<R, S>(
&self,
route: R,
sender_name: S,
receiver_name: S,
) -> Result<(SenderAddress, ReceiverAddress)>
where
R: Into<Route>,
S: Into<String>,
{
let route = route.into();
let sender_name = sender_name.into();
let receiver_name = receiver_name.into();
let receiver_address = Address::random_local();
let sender_address = Address::random_local();
let receiver_rx = Address::random_local();
let client_id = match self.client_id.clone() {
Some(client_id) => client_id,
None => {
let random: [u8; 16] = rand::thread_rng().gen();
hex::encode(random)
}
};
self.ctx
.start_worker(
receiver_address.clone(),
StreamConsumer::new(
client_id,
route.clone(),
Some(sender_address.clone()),
receiver_name.clone(),
self.interval,
self.forwarding_address.clone(),
receiver_rx.clone(),
self.stream_service.clone(),
self.index_service.clone(),
),
)
.await?;
self.ctx
.start_worker(
sender_address.clone(),
StreamProducer::new(sender_name.clone(), route, self.stream_service.clone()),
)
.await?;
Ok((
SenderAddress {
inner: sender_address,
},
ReceiverAddress {
_inner: receiver_address,
ctx: self.ctx.new_detached(receiver_rx).await?,
},
))
}
}