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use crate::{Error, Response};
use futures_util::{StreamExt, pin_mut, TryFutureExt};
use std::time::Duration;
pub async fn one<S>(
service_name: &str,
host_name: S,
timeout: Duration,
) -> Result<Option<Response>, Error>
where
S: AsRef<str>,
{
let stream = crate::discover::all(service_name, timeout * 2)?.listen();
pin_mut!(stream);
let process = async {
while let Some(Ok(response)) = stream.next().await {
match response.hostname() {
Some(found_host) if found_host == host_name.as_ref() => return Some(response),
_ => {}
}
}
None
};
async_std::future::timeout(timeout, process).map_err(|e| e.into()).await
}
pub async fn multiple<S>(
service_name: &str,
host_names: &[S],
timeout: Duration,
) -> Result<Vec<Response>, Error>
where
S: AsRef<str>,
{
let stream = crate::discover::all(service_name, timeout * 2)?.listen();
pin_mut!(stream);
let mut found = Vec::new();
let process = async {
while let Some(Ok(response)) = stream.next().await {
match response.hostname() {
Some(found_host) if host_names.iter().any(|s| s.as_ref() == found_host) => {
found.push(response);
if found.len() == host_names.len() {
return;
}
}
_ => {}
}
}
};
match async_std::future::timeout(timeout, process).await {
Ok(()) => Ok(found),
Err(e) => Err(e.into())
}
}