add protobuf feature

src/error.rs

@@ -15,8 +15,6 @@ use http::{header, StatusCode, Error as HttpError};
 use http::uri::InvalidUriBytes;
 use http_range::HttpRangeParseError;
 use serde_json::error::Error as JsonError;
-use prost::EncodeError as ProtoBufEncodeError;
-use prost::DecodeError as ProtoBufDecodeError;
 pub use url::ParseError as UrlParseError;
 
 // re-exports
@@ -109,10 +107,6 @@ impl From<failure::Error> for Error {
 /// `InternalServerError` for `JsonError`
 impl ResponseError for JsonError {}
 
-/// `InternalServerError` for `ProtoBufEncodeError` `ProtoBufDecodeError`
-impl ResponseError for ProtoBufEncodeError {}
-impl ResponseError for ProtoBufDecodeError {}
-
 /// `InternalServerError` for `UrlParseError`
 impl ResponseError for UrlParseError {}
 
@@ -456,44 +450,6 @@ impl From<JsonError> for JsonPayloadError {
     }
 }
 
-#[derive(Fail, Debug)]
-pub enum ProtoBufPayloadError {
-    /// Payload size is bigger than 256k
-    #[fail(display="Payload size is bigger than 256k")]
-    Overflow,
-    /// Content type error
-    #[fail(display="Content type error")]
-    ContentType,
-    /// Deserialize error
-    #[fail(display="Json deserialize error: {}", _0)]
-    Deserialize(#[cause] ProtoBufDecodeError),
-    /// Payload error
-    #[fail(display="Error that occur during reading payload: {}", _0)]
-    Payload(#[cause] PayloadError),
-}
-
-impl ResponseError for ProtoBufPayloadError {
-
-    fn error_response(&self) -> HttpResponse {
-        match *self {
-            ProtoBufPayloadError::Overflow => httpcodes::HttpPayloadTooLarge.into(),
-            _ => httpcodes::HttpBadRequest.into(),
-        }
-    }
-}
-
-impl From<PayloadError> for ProtoBufPayloadError {
-    fn from(err: PayloadError) -> ProtoBufPayloadError {
-        ProtoBufPayloadError::Payload(err)
-    }
-}
-
-impl From<ProtoBufDecodeError> for ProtoBufPayloadError {
-    fn from(err: ProtoBufDecodeError) -> ProtoBufPayloadError {
-        ProtoBufPayloadError::Deserialize(err)
-    }
-}
-
 /// Errors which can occur when attempting to interpret a segment string as a
 /// valid path segment.
 #[derive(Fail, Debug, PartialEq)]

src/httpmessage.rs

@@ -4,7 +4,6 @@ use bytes::{Bytes, BytesMut};
 use futures::{Future, Stream, Poll};
 use http_range::HttpRange;
 use serde::de::DeserializeOwned;
-use prost::Message;
 use mime::Mime;
 use url::form_urlencoded;
 use encoding::all::UTF_8;
@@ -13,7 +12,6 @@ use encoding::label::encoding_from_whatwg_label;
 use http::{header, HeaderMap};
 
 use json::JsonBody;
-use protobuf::ProtoBufBody;
 use header::Header;
 use multipart::Multipart;
 use error::{ParseError, ContentTypeError,
@@ -211,12 +209,6 @@ pub trait HttpMessage {
         JsonBody::new(self)
     }
 
-    fn protobuf<T: Message + Default>(self) -> ProtoBufBody<Self, T>
-        where Self: Stream<Item=Bytes, Error=PayloadError> + Sized
-    {
-        ProtoBufBody::new(self)
-    }
-
     /// Return stream to http payload processes as multipart.
     ///
     /// Content-type: multipart/form-data;

src/httpresponse.rs

@@ -11,7 +11,6 @@ use http::{StatusCode, Version, HeaderMap, HttpTryFrom, Error as HttpError};
 use http::header::{self, HeaderName, HeaderValue};
 use serde_json;
 use serde::Serialize;
-use prost::Message;
 
 use body::Body;
 use error::Error;
@@ -509,22 +508,6 @@ impl HttpResponseBuilder {
         Ok(self.body(body)?)
     }
 
-    pub fn protobuf<T: Message>(&mut self, value: T) -> Result<HttpResponse, Error> {
-        let mut body = Vec::new();
-        value.encode(&mut body)?;
-        
-        let contains = if let Some(parts) = parts(&mut self.response, &self.err) {
-            parts.headers.contains_key(header::CONTENT_TYPE)
-        } else {
-            true
-        };
-        if !contains {
-            self.header(header::CONTENT_TYPE, "application/protobuf");
-        }
-
-        Ok(self.body(body)?)
-    }
-
     /// Set an empty body and generate `HttpResponse`
     ///
     /// `HttpResponseBuilder` can not be used after this call.

src/lib.rs

@@ -78,7 +78,6 @@ extern crate url;
 extern crate libc;
 extern crate serde;
 extern crate serde_json;
-extern crate prost;
 extern crate flate2;
 extern crate brotli2;
 extern crate encoding;
@@ -89,6 +88,9 @@ extern crate h2 as http2;
 extern crate trust_dns_resolver;
 #[macro_use] extern crate actix;
 
+#[cfg(feature="protobuf")]
+extern crate prost;
+
 #[cfg(test)]
 #[macro_use] extern crate serde_derive;
 
@@ -112,7 +114,6 @@ mod httprequest;
 mod httpresponse;
 mod info;
 mod json;
-mod protobuf;
 mod route;
 mod router;
 mod resource;
@@ -120,6 +121,11 @@ mod param;
 mod payload;
 mod pipeline;
 
+#[cfg(feature="protobuf")]
+mod protobuf;
+#[cfg(feature="protobuf")]
+pub use protobuf::{ProtoBuf, ProtoBufBody};
+
 pub mod client;
 pub mod fs;
 pub mod ws;
@@ -134,7 +140,6 @@ pub mod server;
 pub use error::{Error, Result, ResponseError};
 pub use body::{Body, Binary};
 pub use json::Json;
-pub use protobuf::ProtoBuf;
 pub use application::Application;
 pub use httpmessage::HttpMessage;
 pub use httprequest::HttpRequest;

src/protobuf.rs

@@ -1,16 +1,60 @@
 use bytes::{Bytes, BytesMut};
 use futures::{Poll, Future, Stream};
-use http::header::CONTENT_LENGTH;
+use http::header::{CONTENT_TYPE, CONTENT_LENGTH};
 
 use bytes::IntoBuf;
 use prost::Message;
+use prost::EncodeError as ProtoBufEncodeError;
+use prost::DecodeError as ProtoBufDecodeError;
 
-use error::{Error, ProtoBufPayloadError, PayloadError};
+use error::{Error, PayloadError, ResponseError};
 use handler::Responder;
 use httpmessage::HttpMessage;
 use httprequest::HttpRequest;
-use httpresponse::HttpResponse;
+use httpresponse::{HttpResponse, HttpResponseBuilder};
+use httpcodes::{HttpBadRequest, HttpPayloadTooLarge};
 
+#[derive(Fail, Debug)]
+pub enum ProtoBufPayloadError {
+    /// Payload size is bigger than 256k
+    #[fail(display="Payload size is bigger than 256k")]
+    Overflow,
+    /// Content type error
+    #[fail(display="Content type error")]
+    ContentType,
+    /// Deserialize error
+    #[fail(display="Json deserialize error: {}", _0)]
+    Deserialize(#[cause] ProtoBufDecodeError),
+    /// Payload error
+    #[fail(display="Error that occur during reading payload: {}", _0)]
+    Payload(#[cause] PayloadError),
+}
+
+impl ResponseError for ProtoBufPayloadError {
+
+    fn error_response(&self) -> HttpResponse {
+        match *self {
+            ProtoBufPayloadError::Overflow => HttpPayloadTooLarge.into(),
+            _ => HttpBadRequest.into(),
+        }
+    }
+}
+
+impl From<PayloadError> for ProtoBufPayloadError {
+    fn from(err: PayloadError) -> ProtoBufPayloadError {
+        ProtoBufPayloadError::Payload(err)
+    }
+}
+
+impl From<ProtoBufDecodeError> for ProtoBufPayloadError {
+    fn from(err: ProtoBufDecodeError) -> ProtoBufPayloadError {
+        ProtoBufPayloadError::Deserialize(err)
+    }
+}
+
+/// `InternalServerError` for `ProtoBufEncodeError` `ProtoBufDecodeError`
+impl ResponseError for ProtoBufEncodeError {}
+impl ResponseError for ProtoBufDecodeError {}
 
 #[derive(Debug)]
 pub struct ProtoBuf<T: Message>(pub T);
@@ -32,9 +76,6 @@ impl<T: Message> Responder for ProtoBuf<T> {
     }
 }
 
-
-
-
 pub struct ProtoBufBody<T, U: Message + Default>{
     limit: usize,
     ct: &'static str,
@@ -110,4 +151,16 @@ impl<T, U: Message + Default + 'static> Future for ProtoBufBody<T, U>
 
         self.fut.as_mut().expect("ProtoBufBody could not be used second time").poll()
     }
-}
+}
+
+
+impl HttpResponseBuilder {
+
+    pub fn protobuf<T: Message>(&mut self, value: T) -> Result<HttpResponse, Error> {
+        self.header(CONTENT_TYPE, "application/protobuf");
+
+        let mut body = Vec::new();
+        value.encode(&mut body)?;
+        Ok(self.body(body)?)
+    }
+}