Add handling for fallible signers (#8367)

automerge

client/src/client_error.rs

@@ -1,14 +1,16 @@
 use crate::rpc_request;
-use solana_sdk::transaction::TransactionError;
+use solana_sdk::{signature::SignerError, transaction::TransactionError};
 use std::{fmt, io};
+use thiserror::Error;
 
-#[derive(Debug)]
+#[derive(Error, Debug)]
 pub enum ClientError {
-    Io(io::Error),
-    Reqwest(reqwest::Error),
-    RpcError(rpc_request::RpcError),
-    SerdeJson(serde_json::error::Error),
-    TransactionError(TransactionError),
+    Io(#[from] io::Error),
+    Reqwest(#[from] reqwest::Error),
+    RpcError(#[from] rpc_request::RpcError),
+    SerdeJson(#[from] serde_json::error::Error),
+    SigningError(#[from] SignerError),
+    TransactionError(#[from] TransactionError),
 }
 
 impl fmt::Display for ClientError {
@@ -16,35 +18,3 @@ impl fmt::Display for ClientError {
         write!(f, "solana client error")
     }
 }
-
-impl std::error::Error for ClientError {}
-
-impl From<io::Error> for ClientError {
-    fn from(err: io::Error) -> ClientError {
-        ClientError::Io(err)
-    }
-}
-
-impl From<reqwest::Error> for ClientError {
-    fn from(err: reqwest::Error) -> ClientError {
-        ClientError::Reqwest(err)
-    }
-}
-
-impl From<rpc_request::RpcError> for ClientError {
-    fn from(err: rpc_request::RpcError) -> ClientError {
-        ClientError::RpcError(err)
-    }
-}
-
-impl From<serde_json::error::Error> for ClientError {
-    fn from(err: serde_json::error::Error) -> ClientError {
-        ClientError::SerdeJson(err)
-    }
-}
-
-impl From<TransactionError> for ClientError {
-    fn from(err: TransactionError) -> ClientError {
-        ClientError::TransactionError(err)
-    }
-}