Implement std::error::Error trait for ttrpc Error

Use Crate thiserror.

Signed-off-by: Tim Zhang <[email protected]>

Author: Tim-Zhang

Cargo.toml

@@ -17,6 +17,7 @@ libc = { version = "0.2.59", features = [ "extra_traits" ] }
 nix = "0.16.1"
 log = "0.4"
 byteorder = "1.3.2"
+thiserror = "1.0"
 
 async-trait = { version = "0.1.31", optional = true }
 tokio = { version = "0.2", features = ["rt-threaded", "sync", "uds", "stream", "macros", "io-util"], optional = true }

src/error.rs

@@ -16,12 +16,18 @@
 
 use crate::ttrpc::{Code, Status};
 use std::result;
+use thiserror::Error;
 
 /// The error type for ttrpc.
-#[derive(Debug)]
+#[derive(Error, Debug)]
 pub enum Error {
+    #[error("socket err: {0}")]
     Socket(String),
+
+    #[error("rpc status: {0:?}")]
     RpcStatus(Status),
+
+    #[error("ttrpc err: {0}")]
     Others(String),
 }