Revamp errors in aws-smithy-http

aws/rust-runtime/aws-config/src/http_credential_provider.rs

@@ -48,7 +48,7 @@ impl HttpCredentialProvider {
         let credentials = self.client.call(self.operation(auth)).await;
         match credentials {
             Ok(creds) => Ok(creds),
-            Err(SdkError::ServiceError { err, .. }) => Err(err),
+            Err(SdkError::ServiceError(context)) => Err(context.into_err()),
             Err(other) => Err(CredentialsError::unhandled(other)),
         }
     }
@@ -176,13 +176,20 @@ impl ClassifyRetry<SdkSuccess<Credentials>, SdkError<CredentialsError>>
                 RetryKind::Error(ErrorKind::TransientError)
             }
             // non-parseable 200s
-            Err(SdkError::ServiceError {
-                err: CredentialsError::Unhandled { .. },
-                raw,
-            }) if raw.http().status().is_success() => RetryKind::Error(ErrorKind::ServerError),
+            Err(SdkError::ServiceError(context))
+                if matches!(context.err(), CredentialsError::Unhandled { .. })
+                    && context.raw().http().status().is_success() =>
+            {
+                RetryKind::Error(ErrorKind::ServerError)
+            }
             // 5xx errors
-            Err(SdkError::ServiceError { raw, .. } | SdkError::ResponseError { raw, .. })
-                if raw.http().status().is_server_error() =>
+            Err(SdkError::ResponseError(context))
+                if context.raw().http().status().is_server_error() =>
+            {
+                RetryKind::Error(ErrorKind::ServerError)
+            }
+            Err(SdkError::ServiceError(context))
+                if context.raw().http().status().is_server_error() =>
             {
                 RetryKind::Error(ErrorKind::ServerError)
             }
@@ -219,10 +226,10 @@ mod test {
                 raw: operation::Response::new(resp.map(SdkBody::from)),
                 parsed: creds,
             }),
-            Err(err) => Err(SdkError::ServiceError {
+            Err(err) => Err(SdkError::service_error(
                 err,
-                raw: operation::Response::new(resp.map(SdkBody::from)),
-            }),
+                operation::Response::new(resp.map(SdkBody::from)),
+            )),
         }
     }
 
@@ -278,10 +285,7 @@ mod test {
         assert!(
             matches!(
                 sdk_error,
-                SdkError::ServiceError {
-                    err: CredentialsError::ProviderError { .. },
-                    ..
-                }
+                SdkError::ServiceError(ref context) if matches!(context.err(), CredentialsError::ProviderError { .. })
             ),
             "should be provider error: {}",
             sdk_error

aws/rust-runtime/aws-config/src/imds/client.rs

@@ -206,23 +206,26 @@ impl Client {
             .call(operation)
             .await
             .map_err(|err| match err {
-                SdkError::ConstructionFailure(err) => match err.downcast::<ImdsError>() {
-                    Ok(token_failure) => *token_failure,
-                    Err(other) => ImdsError::Unexpected(other),
-                },
-                SdkError::TimeoutError(err) => ImdsError::IoError(err),
-                SdkError::DispatchFailure(err) => ImdsError::IoError(err.into()),
-                SdkError::ResponseError { err, .. } => ImdsError::IoError(err),
-                SdkError::ServiceError {
-                    err: InnerImdsError::BadStatus,
-                    raw,
-                } => ImdsError::ErrorResponse {
-                    response: raw.into_parts().0,
+                SdkError::ConstructionFailure(_) if err.source().is_some() => {
+                    match err.into_source().map(|e| e.downcast::<ImdsError>()) {
+                        Ok(Ok(token_failure)) => *token_failure,
+                        Ok(Err(err)) => ImdsError::Unexpected(err),
+                        Err(err) => ImdsError::Unexpected(err.into()),
+                    }
+                }
+                SdkError::ConstructionFailure(_) => ImdsError::Unexpected(err.into()),
+                SdkError::ServiceError(context) => match context.err() {
+                    InnerImdsError::InvalidUtf8 => {
+                        ImdsError::Unexpected("IMDS returned invalid UTF-8".into())
+                    }
+                    InnerImdsError::BadStatus => ImdsError::ErrorResponse {
+                        response: context.into_raw().into_parts().0,
+                    },
                 },
-                SdkError::ServiceError {
-                    err: InnerImdsError::InvalidUtf8,
-                    ..
-                } => ImdsError::Unexpected("IMDS returned invalid UTF-8".into()),
+                SdkError::TimeoutError(_)
+                | SdkError::DispatchFailure(_)
+                | SdkError::ResponseError(_) => ImdsError::IoError(err.into()),
+                _ => ImdsError::Unexpected(err.into()),
             })
     }
 
@@ -735,9 +738,8 @@ impl<T, E> ClassifyRetry<SdkSuccess<T>, SdkError<E>> for ImdsResponseRetryClassi
     fn classify_retry(&self, response: Result<&SdkSuccess<T>, &SdkError<E>>) -> RetryKind {
         match response {
             Ok(_) => RetryKind::Unnecessary,
-            Err(SdkError::ResponseError { raw, .. }) | Err(SdkError::ServiceError { raw, .. }) => {
-                Self::classify(raw)
-            }
+            Err(SdkError::ResponseError(context)) => Self::classify(context.raw()),
+            Err(SdkError::ServiceError(context)) => Self::classify(context.raw()),
             _ => RetryKind::UnretryableFailure,
         }
     }
@@ -764,6 +766,21 @@ pub(crate) mod test {
     use std::time::{Duration, UNIX_EPOCH};
     use tracing_test::traced_test;
 
+    macro_rules! assert_full_error_contains {
+        ($err:expr, $contains:expr) => {
+            let err = $err;
+            let message = format!(
+                "{}",
+                aws_smithy_types::error::display::DisplayErrorContext(&err)
+            );
+            assert!(
+                message.contains($contains),
+                "Error message '{message}' didn't contain text '{}'",
+                $contains
+            );
+        };
+    }
+
     const TOKEN_A: &str = "AQAEAFTNrA4eEGx0AQgJ1arIq_Cc-t4tWt3fB0Hd8RKhXlKc5ccvhg==";
     const TOKEN_B: &str = "alternatetoken==";
 
@@ -1027,7 +1044,7 @@ pub(crate) mod test {
         )]);
         let client = make_client(&connection).await;
         let err = client.get("/latest/metadata").await.expect_err("no token");
-        assert!(format!("{}", err).contains("forbidden"), "{}", err);
+        assert_full_error_contains!(err, "forbidden");
         connection.assert_requests_match(&[]);
     }
 
@@ -1050,10 +1067,10 @@ pub(crate) mod test {
         );
 
         // Emulate a failure to parse the response body (using an io error since it's easy to construct in a test)
-        let failure = SdkError::<()>::ResponseError {
-            err: Box::new(io::Error::new(io::ErrorKind::BrokenPipe, "fail to parse")),
-            raw: response_200(),
-        };
+        let failure = SdkError::<()>::response_error(
+            io::Error::new(io::ErrorKind::BrokenPipe, "fail to parse"),
+            response_200(),
+        );
         assert_eq!(
             RetryKind::UnretryableFailure,
             classifier.classify_retry(Err::<&SdkSuccess<()>, _>(&failure))
@@ -1069,7 +1086,7 @@ pub(crate) mod test {
         )]);
         let client = make_client(&connection).await;
         let err = client.get("/latest/metadata").await.expect_err("no token");
-        assert!(format!("{}", err).contains("Invalid Token"), "{}", err);
+        assert_full_error_contains!(err, "Invalid Token");
         connection.assert_requests_match(&[]);
     }
 
@@ -1090,7 +1107,7 @@ pub(crate) mod test {
         ]);
         let client = make_client(&connection).await;
         let err = client.get("/latest/metadata").await.expect_err("no token");
-        assert!(format!("{}", err).contains("invalid UTF-8"), "{}", err);
+        assert_full_error_contains!(err, "invalid UTF-8");
         connection.assert_requests_match(&[]);
     }
 
@@ -1099,6 +1116,7 @@ pub(crate) mod test {
     #[cfg(any(feature = "rustls", feature = "native-tls"))]
     async fn one_second_connect_timeout() {
         use crate::imds::client::ImdsError;
+        use aws_smithy_types::error::display::DisplayErrorContext;
         use std::time::SystemTime;
 
         let client = Client::builder()
@@ -1124,7 +1142,8 @@ pub(crate) mod test {
             time_elapsed
         );
         match resp {
-            ImdsError::FailedToLoadToken(err) if format!("{}", err).contains("timeout") => {} // ok,
+            ImdsError::FailedToLoadToken(err)
+                if format!("{}", DisplayErrorContext(&err)).contains("timeout") => {} // ok,
             other => panic!(
                 "wrong error, expected construction failure with TimedOutError inside: {}",
                 other
@@ -1182,12 +1201,7 @@ pub(crate) mod test {
                 test, test_case.docs
             ),
             (Err(substr), Err(err)) => {
-                assert!(
-                    format!("{}", err).contains(substr),
-                    "`{}` did not contain `{}`",
-                    err,
-                    substr
-                );
+                assert_full_error_contains!(err, substr);
                 return;
             }
             (Ok(_uri), Err(e)) => panic!(

aws/rust-runtime/aws-config/src/imds/credentials.rs

@@ -13,6 +13,7 @@ use crate::imds::client::{ImdsError, LazyClient};
 use crate::json_credentials::{parse_json_credentials, JsonCredentials, RefreshableCredentials};
 use crate::provider_config::ProviderConfig;
 use aws_smithy_client::SdkError;
+use aws_smithy_types::error::display::DisplayErrorContext;
 use aws_types::credentials::{future, CredentialsError, ProvideCredentials};
 use aws_types::os_shim_internal::Env;
 use aws_types::{credentials, Credentials};
@@ -137,9 +138,12 @@ impl ImdsCredentialsProvider {
                 );
                 Err(CredentialsError::not_loaded("received 404 from IMDS"))
             }
-            Err(ImdsError::FailedToLoadToken(SdkError::DispatchFailure(err))) => Err(
-                CredentialsError::not_loaded(format!("could not communicate with imds: {}", err)),
-            ),
+            Err(ImdsError::FailedToLoadToken(ref err @ SdkError::DispatchFailure(_))) => {
+                Err(CredentialsError::not_loaded(format!(
+                    "could not communicate with IMDS: {}",
+                    DisplayErrorContext(&err)
+                )))
+            }
             Err(other) => Err(CredentialsError::provider_error(other)),
         }
     }

aws/rust-runtime/aws-config/src/sts/assume_role.rs

@@ -19,6 +19,7 @@ use std::time::Duration;
 
 use crate::meta::credentials::LazyCachingCredentialsProvider;
 use crate::provider_config::ProviderConfig;
+use aws_smithy_types::error::display::DisplayErrorContext;
 use tracing::Instrument;
 
 /// Credentials provider that uses credentials provided by another provider to assume a role
@@ -253,21 +254,20 @@ impl Inner {
                 );
                 super::util::into_credentials(assumed.credentials, "AssumeRoleProvider")
             }
-            Err(SdkError::ServiceError { err, raw }) => {
-                match err.kind {
+            Err(SdkError::ServiceError(ref context))
+                if matches!(
+                    context.err().kind,
                     AssumeRoleErrorKind::RegionDisabledException(_)
-                    | AssumeRoleErrorKind::MalformedPolicyDocumentException(_) => {
-                        return Err(CredentialsError::invalid_configuration(
-                            SdkError::ServiceError { err, raw },
-                        ))
-                    }
-                    _ => {}
-                }
-                tracing::warn!(error = ?err.message(), "STS refused to grant assume role");
-                Err(CredentialsError::provider_error(SdkError::ServiceError {
-                    err,
-                    raw,
-                }))
+                        | AssumeRoleErrorKind::MalformedPolicyDocumentException(_)
+                ) =>
+            {
+                Err(CredentialsError::invalid_configuration(
+                    assumed.err().unwrap(),
+                ))
+            }
+            Err(SdkError::ServiceError(ref context)) => {
+                tracing::warn!(error = %DisplayErrorContext(context.err()), "STS refused to grant assume role");
+                Err(CredentialsError::provider_error(assumed.err().unwrap()))
             }
             Err(err) => Err(CredentialsError::provider_error(err)),
         }

aws/rust-runtime/aws-config/src/test_case.rs

@@ -14,6 +14,7 @@ use aws_types::os_shim_internal::{Env, Fs};
 use serde::Deserialize;
 
 use crate::connector::default_connector;
+use aws_smithy_types::error::display::DisplayErrorContext;
 use std::collections::HashMap;
 use std::error::Error;
 use std::fmt::Debug;
@@ -100,12 +101,11 @@ where
                 assert_eq!(expected, &actual.into(), "incorrect result was returned")
             }
             (Err(err), GenericTestResult::ErrorContains(substr)) => {
+                let message = format!("{}", DisplayErrorContext(&err));
                 assert!(
-                    format!("{}", err).contains(substr),
-                    "`{}` did not contain `{}`",
-                    err,
-                    substr
-                )
+                    message.contains(substr),
+                    "`{message}` did not contain `{substr}`"
+                );
             }
             (Err(actual_error), GenericTestResult::Ok(expected_creds)) => panic!(
                 "expected credentials ({:?}) but an error was returned: {}",

aws/rust-runtime/aws-endpoint/src/lib.rs

@@ -12,7 +12,7 @@ pub use partition::Partition;
 pub use partition::PartitionResolver;
 use std::collections::HashMap;
 
-use aws_smithy_http::endpoint::Error as EndpointError;
+use aws_smithy_http::endpoint::error::ResolveEndpointError;
 use aws_smithy_http::endpoint::{apply_endpoint, EndpointPrefix, ResolveEndpoint};
 use aws_smithy_http::middleware::MapRequest;
 use aws_smithy_http::operation::Request;
@@ -54,19 +54,18 @@ impl EndpointShim {
 }
 
 impl ResolveEndpoint<Params> for EndpointShim {
-    fn resolve_endpoint(
-        &self,
-        params: &Params,
-    ) -> Result<SmithyEndpoint, aws_smithy_http::endpoint::Error> {
+    fn resolve_endpoint(&self, params: &Params) -> Result<SmithyEndpoint, ResolveEndpointError> {
         let aws_endpoint = self
             .0
             .resolve_endpoint(
                 params
                     .region
                     .as_ref()
-                    .ok_or_else(|| EndpointError::message("no region in params"))?,
+                    .ok_or_else(|| ResolveEndpointError::message("no region in params"))?,
             )
-            .map_err(|err| EndpointError::message("failure resolving endpoint").with_cause(err))?;
+            .map_err(|err| {
+                ResolveEndpointError::message("failure resolving endpoint").with_source(err)
+            })?;
         let uri = aws_endpoint.endpoint().uri();
         let mut auth_scheme =
             HashMap::from([("name".to_string(), Document::String("sigv4".into()))]);
@@ -134,7 +133,7 @@ impl MapRequest for AwsEndpointStage {
                     // its place
                     return Err(AwsEndpointStageError::EndpointResolutionError(std::mem::replace(
                         e,
-                        aws_smithy_http::endpoint::Error::message("the original error was directly returned")
+                        ResolveEndpointError::message("the original error was directly returned")
                     ).into()));
                 }
             };

aws/rust-runtime/aws-http/src/retry.rs

@@ -141,10 +141,10 @@ mod test {
         err: E,
         raw: http::Response<&'static str>,
     ) -> Result<SdkSuccess<()>, SdkError<E>> {
-        Err(SdkError::ServiceError {
+        Err(SdkError::service_error(
             err,
-            raw: operation::Response::new(raw.map(SdkBody::from)),
-        })
+            operation::Response::new(raw.map(SdkBody::from)),
+        ))
     }
 
     #[test]
@@ -263,10 +263,10 @@ mod test {
         let policy = AwsResponseRetryClassifier::new();
         assert_eq!(
             policy.classify_retry(
-                Result::<SdkSuccess<()>, SdkError<UnmodeledError>>::Err(SdkError::ResponseError {
-                    err: Box::new(UnmodeledError),
-                    raw: operation::Response::new(http::Response::new("OK").map(SdkBody::from)),
-                })
+                Result::<SdkSuccess<()>, SdkError<UnmodeledError>>::Err(SdkError::response_error(
+                    UnmodeledError,
+                    operation::Response::new(http::Response::new("OK").map(SdkBody::from)),
+                ))
                 .as_ref()
             ),
             RetryKind::Error(ErrorKind::TransientError)
@@ -276,7 +276,7 @@ mod test {
     #[test]
     fn test_timeout_error() {
         let policy = AwsResponseRetryClassifier::new();
-        let err: Result<(), SdkError<UnmodeledError>> = Err(SdkError::TimeoutError("blah".into()));
+        let err: Result<(), SdkError<UnmodeledError>> = Err(SdkError::timeout_error("blah"));
         assert_eq!(
             policy.classify_retry(err.as_ref()),
             RetryKind::Error(ErrorKind::TransientError)