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)]