feat: Add tower integration (#356)

Cargo.toml

@@ -10,6 +10,7 @@ members = [
     "sentry-log",
     "sentry-panic",
     "sentry-slog",
+    "sentry-tower",
     "sentry-tracing",
     "sentry-types",
 ]

sentry-tower/Cargo.toml

@@ -0,0 +1,26 @@
+[package]
+name = "sentry-tower"
+version = "0.23.0"
+authors = ["Sentry <hello@sentry.io>"]
+license = "Apache-2.0"
+readme = "README.md"
+repository = "https://github.com/getsentry/sentry-rust"
+homepage = "https://sentry.io/welcome/"
+description = """
+Sentry integration for tower-based crates.
+"""
+edition = "2018"
+
+[dependencies]
+tower-layer = "0.3"
+tower-service = "0.3"
+sentry-core = { version = "0.23.0", path = "../sentry-core", default-features = false, features = ["client"] }
+
+[dev-dependencies]
+anyhow = "1"
+prost = "0.8"
+sentry = { version = "0.23.0", path = "../sentry", default-features = false, features = ["test"] }
+sentry-anyhow = { version = "0.23.0", path = "../sentry-anyhow" }
+tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
+tonic = { version = "0.5", features = ["transport"] }
+tower = { version = "0.4", features = ["util", "timeout"] }

sentry-tower/src/helloworld.rs

@@ -0,0 +1,214 @@
+// Autogenerated from tonic's example proto files using `tonic-build`.
+//
+// Source proto files can be found at
+// https://github.com/hyperium/tonic/blob/master/examples/proto/helloworld/helloworld.proto
+
+/// The request message containing the user's name.
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct HelloRequest {
+    #[prost(string, tag = "1")]
+    pub name: ::prost::alloc::string::String,
+}
+/// The response message containing the greetings
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct HelloReply {
+    #[prost(string, tag = "1")]
+    pub message: ::prost::alloc::string::String,
+}
+#[doc = r" Generated client implementations."]
+pub mod greeter_client {
+    #![allow(unused_variables, dead_code, missing_docs)]
+    use tonic::codegen::*;
+    #[doc = " The greeting service definition."]
+    #[derive(Debug, Clone)]
+    pub struct GreeterClient<T> {
+        inner: tonic::client::Grpc<T>,
+    }
+    impl GreeterClient<tonic::transport::Channel> {
+        #[doc = r" Attempt to create a new client by connecting to a given endpoint."]
+        pub async fn connect<D>(dst: D) -> Result<Self, tonic::transport::Error>
+        where
+            D: std::convert::TryInto<tonic::transport::Endpoint>,
+            D::Error: Into<StdError>,
+        {
+            let conn = tonic::transport::Endpoint::new(dst)?.connect().await?;
+            Ok(Self::new(conn))
+        }
+    }
+    impl<T> GreeterClient<T>
+    where
+        T: tonic::client::GrpcService<tonic::body::BoxBody>,
+        T::ResponseBody: Body + Send + Sync + 'static,
+        T::Error: Into<StdError>,
+        <T::ResponseBody as Body>::Error: Into<StdError> + Send,
+    {
+        pub fn new(inner: T) -> Self {
+            let inner = tonic::client::Grpc::new(inner);
+            Self { inner }
+        }
+        pub fn with_interceptor<F>(
+            inner: T,
+            interceptor: F,
+        ) -> GreeterClient<InterceptedService<T, F>>
+        where
+            F: FnMut(tonic::Request<()>) -> Result<tonic::Request<()>, tonic::Status>,
+            T: Service<
+                http::Request<tonic::body::BoxBody>,
+                Response = http::Response<
+                    <T as tonic::client::GrpcService<tonic::body::BoxBody>>::ResponseBody,
+                >,
+            >,
+            <T as Service<http::Request<tonic::body::BoxBody>>>::Error:
+                Into<StdError> + Send + Sync,
+        {
+            GreeterClient::new(InterceptedService::new(inner, interceptor))
+        }
+        #[doc = r" Compress requests with `gzip`."]
+        #[doc = r""]
+        #[doc = r" This requires the server to support it otherwise it might respond with an"]
+        #[doc = r" error."]
+        pub fn send_gzip(mut self) -> Self {
+            self.inner = self.inner.send_gzip();
+            self
+        }
+        #[doc = r" Enable decompressing responses with `gzip`."]
+        pub fn accept_gzip(mut self) -> Self {
+            self.inner = self.inner.accept_gzip();
+            self
+        }
+        #[doc = " Sends a greeting"]
+        pub async fn say_hello(
+            &mut self,
+            request: impl tonic::IntoRequest<super::HelloRequest>,
+        ) -> Result<tonic::Response<super::HelloReply>, tonic::Status> {
+            self.inner.ready().await.map_err(|e| {
+                tonic::Status::new(
+                    tonic::Code::Unknown,
+                    format!("Service was not ready: {}", e.into()),
+                )
+            })?;
+            let codec = tonic::codec::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static("/helloworld.Greeter/SayHello");
+            self.inner.unary(request.into_request(), path, codec).await
+        }
+    }
+}
+#[doc = r" Generated server implementations."]
+pub mod greeter_server {
+    #![allow(unused_variables, dead_code, missing_docs)]
+    use tonic::codegen::*;
+    #[doc = "Generated trait containing gRPC methods that should be implemented for use with GreeterServer."]
+    #[async_trait]
+    pub trait Greeter: Send + Sync + 'static {
+        #[doc = " Sends a greeting"]
+        async fn say_hello(
+            &self,
+            request: tonic::Request<super::HelloRequest>,
+        ) -> Result<tonic::Response<super::HelloReply>, tonic::Status>;
+    }
+    #[doc = " The greeting service definition."]
+    #[derive(Debug)]
+    pub struct GreeterServer<T: Greeter> {
+        inner: _Inner<T>,
+        accept_compression_encodings: (),
+        send_compression_encodings: (),
+    }
+    struct _Inner<T>(Arc<T>);
+    impl<T: Greeter> GreeterServer<T> {
+        pub fn new(inner: T) -> Self {
+            let inner = Arc::new(inner);
+            let inner = _Inner(inner);
+            Self {
+                inner,
+                accept_compression_encodings: Default::default(),
+                send_compression_encodings: Default::default(),
+            }
+        }
+        pub fn with_interceptor<F>(inner: T, interceptor: F) -> InterceptedService<Self, F>
+        where
+            F: FnMut(tonic::Request<()>) -> Result<tonic::Request<()>, tonic::Status>,
+        {
+            InterceptedService::new(Self::new(inner), interceptor)
+        }
+    }
+    impl<T, B> Service<http::Request<B>> for GreeterServer<T>
+    where
+        T: Greeter,
+        B: Body + Send + Sync + 'static,
+        B::Error: Into<StdError> + Send + 'static,
+    {
+        type Response = http::Response<tonic::body::BoxBody>;
+        type Error = Never;
+        type Future = BoxFuture<Self::Response, Self::Error>;
+        fn poll_ready(&mut self, _cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
+            Poll::Ready(Ok(()))
+        }
+        fn call(&mut self, req: http::Request<B>) -> Self::Future {
+            let inner = self.inner.clone();
+            match req.uri().path() {
+                "/helloworld.Greeter/SayHello" => {
+                    #[allow(non_camel_case_types)]
+                    struct SayHelloSvc<T: Greeter>(pub Arc<T>);
+                    impl<T: Greeter> tonic::server::UnaryService<super::HelloRequest> for SayHelloSvc<T> {
+                        type Response = super::HelloReply;
+                        type Future = BoxFuture<tonic::Response<Self::Response>, tonic::Status>;
+                        fn call(
+                            &mut self,
+                            request: tonic::Request<super::HelloRequest>,
+                        ) -> Self::Future {
+                            let inner = self.0.clone();
+                            let fut = async move { (*inner).say_hello(request).await };
+                            Box::pin(fut)
+                        }
+                    }
+                    let accept_compression_encodings = self.accept_compression_encodings;
+                    let send_compression_encodings = self.send_compression_encodings;
+                    let inner = self.inner.clone();
+                    let fut = async move {
+                        let inner = inner.0;
+                        let method = SayHelloSvc(inner);
+                        let codec = tonic::codec::ProstCodec::default();
+                        let mut grpc = tonic::server::Grpc::new(codec).apply_compression_config(
+                            accept_compression_encodings,
+                            send_compression_encodings,
+                        );
+                        let res = grpc.unary(method, req).await;
+                        Ok(res)
+                    };
+                    Box::pin(fut)
+                }
+                _ => Box::pin(async move {
+                    Ok(http::Response::builder()
+                        .status(200)
+                        .header("grpc-status", "12")
+                        .header("content-type", "application/grpc")
+                        .body(empty_body())
+                        .unwrap())
+                }),
+            }
+        }
+    }
+    impl<T: Greeter> Clone for GreeterServer<T> {
+        fn clone(&self) -> Self {
+            let inner = self.inner.clone();
+            Self {
+                inner,
+                accept_compression_encodings: self.accept_compression_encodings,
+                send_compression_encodings: self.send_compression_encodings,
+            }
+        }
+    }
+    impl<T: Greeter> Clone for _Inner<T> {
+        fn clone(&self) -> Self {
+            Self(self.0.clone())
+        }
+    }
+    impl<T: std::fmt::Debug> std::fmt::Debug for _Inner<T> {
+        fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+            write!(f, "{:?}", self.0)
+        }
+    }
+    impl<T: Greeter> tonic::transport::NamedService for GreeterServer<T> {
+        const NAME: &'static str = "helloworld.Greeter";
+    }
+}