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#[doc(hidden)]
pub mod partition;
#[doc(hidden)]
pub use partition::Partition;
#[doc(hidden)]
pub use partition::PartitionResolver;
use aws_smithy_http::endpoint::EndpointPrefix;
use aws_smithy_http::middleware::MapRequest;
use aws_smithy_http::operation::Request;
use aws_smithy_http::property_bag::PropertyBag;
use aws_types::region::{Region, SigningRegion};
use aws_types::SigningService;
use std::error::Error;
use std::fmt;
use std::fmt::{Debug, Display, Formatter};
use std::sync::Arc;
pub use aws_types::endpoint::{AwsEndpoint, BoxError, CredentialScope, ResolveAwsEndpoint};
type AwsEndpointResolver = Arc<dyn ResolveAwsEndpoint>;
pub fn get_endpoint_resolver(properties: &PropertyBag) -> Option<&AwsEndpointResolver> {
properties.get()
}
pub fn set_endpoint_resolver(properties: &mut PropertyBag, provider: AwsEndpointResolver) {
properties.insert(provider);
}
#[derive(Clone, Debug)]
pub struct AwsEndpointStage;
#[derive(Debug)]
pub enum AwsEndpointStageError {
NoEndpointResolver,
NoRegion,
EndpointResolutionError(BoxError),
}
impl Display for AwsEndpointStageError {
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
Debug::fmt(self, f)
}
}
impl Error for AwsEndpointStageError {}
impl MapRequest for AwsEndpointStage {
type Error = AwsEndpointStageError;
fn apply(&self, request: Request) -> Result<Request, Self::Error> {
request.augment(|mut http_req, props| {
let provider =
get_endpoint_resolver(props).ok_or(AwsEndpointStageError::NoEndpointResolver)?;
let region = props
.get::<Region>()
.ok_or(AwsEndpointStageError::NoRegion)?;
let endpoint = provider
.resolve_endpoint(region)
.map_err(AwsEndpointStageError::EndpointResolutionError)?;
tracing::debug!(endpoint = ?endpoint, base_region = ?region, "resolved endpoint");
let signing_region = endpoint
.credential_scope()
.region()
.cloned()
.unwrap_or_else(|| region.clone().into());
props.insert::<SigningRegion>(signing_region);
if let Some(signing_service) = endpoint.credential_scope().service() {
props.insert::<SigningService>(signing_service.clone());
}
endpoint.set_endpoint(http_req.uri_mut(), props.get::<EndpointPrefix>());
Ok(http_req)
})
}
}
#[cfg(test)]
mod test {
use std::sync::Arc;
use http::header::HOST;
use http::Uri;
use aws_smithy_http::body::SdkBody;
use aws_smithy_http::middleware::MapRequest;
use aws_smithy_http::operation;
use aws_types::region::{Region, SigningRegion};
use aws_types::SigningService;
use crate::partition::endpoint::{Metadata, Protocol, SignatureVersion};
use crate::{set_endpoint_resolver, AwsEndpointStage, CredentialScope};
#[test]
fn default_endpoint_updates_request() {
let provider = Arc::new(Metadata {
uri_template: "kinesis.{region}.amazonaws.com",
protocol: Protocol::Https,
credential_scope: Default::default(),
signature_versions: SignatureVersion::V4,
});
let req = http::Request::new(SdkBody::from(""));
let region = Region::new("us-east-1");
let mut req = operation::Request::new(req);
{
let mut props = req.properties_mut();
props.insert(region.clone());
props.insert(SigningService::from_static("kinesis"));
set_endpoint_resolver(&mut props, provider);
};
let req = AwsEndpointStage.apply(req).expect("should succeed");
assert_eq!(req.properties().get(), Some(&SigningRegion::from(region)));
assert_eq!(
req.properties().get(),
Some(&SigningService::from_static("kinesis"))
);
let (req, _conf) = req.into_parts();
assert_eq!(
req.uri(),
&Uri::from_static("https://kinesis.us-east-1.amazonaws.com")
);
assert!(req.headers().get(HOST).is_none());
}
#[test]
fn sets_service_override_when_set() {
let provider = Arc::new(Metadata {
uri_template: "www.service.com",
protocol: Protocol::Http,
credential_scope: CredentialScope::builder()
.service(SigningService::from_static("qldb-override"))
.region(SigningRegion::from_static("us-east-override"))
.build(),
signature_versions: SignatureVersion::V4,
});
let req = http::Request::new(SdkBody::from(""));
let region = Region::new("us-east-1");
let mut req = operation::Request::new(req);
{
let mut props = req.properties_mut();
props.insert(region);
props.insert(SigningService::from_static("kinesis"));
set_endpoint_resolver(&mut props, provider);
};
let req = AwsEndpointStage.apply(req).expect("should succeed");
assert_eq!(
req.properties().get(),
Some(&SigningRegion::from(Region::new("us-east-override")))
);
assert_eq!(
req.properties().get(),
Some(&SigningService::from_static("qldb-override"))
);
}
}
