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move resolver logic into the resolver

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Honestly not sure why it wasn't done like this before. This code is much
less awkward to follow and more compartmentalized.

These changes were mainly motivated by a clippy lint triggering on the
original code, which then made me wonder if I could get rid of some of
the `Box`ing. Turns out I could, and this is the result of that.
This commit is contained in:
Charles Hall 2024-01-24 15:11:17 -08:00
parent c86f9a5c5b
commit fe86d28428
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GPG key ID: 7B8E0645816E07CF
1 changed files with 23 additions and 19 deletions
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30
src/service/globals/mod.rs
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@ -109,11 +109,11 @@ impl Default for RotationHandler {
pub struct Resolver {
inner: GaiResolver,
overrides: Box<dyn Fn(&str) -> Option<SocketAddr> + Send + Sync>,
overrides: Arc<RwLock<TlsNameMap>>,
}
impl Resolver {
pub fn new(overrides: Box<dyn Fn(&str) -> Option<SocketAddr> + Send + Sync>) -> Resolver {
pub fn new(overrides: Arc<RwLock<TlsNameMap>>) -> Self {
Resolver {
inner: GaiResolver::new(),
overrides,
@ -123,16 +123,26 @@ impl Resolver {
impl Resolve for Resolver {
fn resolve(&self, name: Name) -> Resolving {
if let Some(addr) = (self.overrides)(name.as_str()) {
let once: Box<dyn Iterator<Item = SocketAddr> + Send> = Box::new(iter::once(addr));
return Box::pin(future::ready(Ok(once)));
}
self.overrides
.read()
.expect("lock should not be poisoned")
.get(name.as_str())
.and_then(|(override_name, port)| {
override_name.get(0).map(|first_name| {
let x: Box<dyn Iterator<Item = SocketAddr> + Send> =
Box::new(iter::once(SocketAddr::new(*first_name, *port)));
let x: Resolving = Box::pin(future::ready(Ok(x)));
x
})
})
.unwrap_or_else(|| {
let this = &mut self.inner.clone();
Box::pin(HyperService::<Name>::call(this, name).map(|result| {
result
.map(|addrs| -> Addrs { Box::new(addrs) })
.map_err(|err| -> Box<dyn StdError + Send + Sync> { Box::new(err) })
}))
})
}
}
@ -157,14 +167,8 @@ impl Service {
.map(|secret| jsonwebtoken::DecodingKey::from_secret(secret.as_bytes()));
let default_client = reqwest_client_builder(&config)?.build()?;
let name_override = Arc::clone(&tls_name_override);
let federation_client = reqwest_client_builder(&config)?
.dns_resolver(Arc::new(Resolver::new(Box::new(move |domain| {
let read_guard = name_override.read().unwrap();
let (override_name, port) = read_guard.get(domain)?;
let first_name = override_name.get(0)?;
Some(SocketAddr::new(*first_name, *port))
}))))
.dns_resolver(Arc::new(Resolver::new(tls_name_override.clone())))
.build()?;
// Supported and stable room versions