RPC: add err field to TransactionStatus, alongside the now deprecated status field (#9296)

automerge

client/src/mock_rpc_client_request.rs

@@ -116,10 +116,12 @@ impl GenericRpcClientRequest for MockRpcClientRequest {
                 let status = if self.url == "sig_not_found" {
                     None
                 } else {
+                    let err = status.clone().err();
                     Some(TransactionStatus {
                         status,
                         slot: 1,
                         confirmations: Some(0),
+                        err,
                     })
                 };
                 serde_json::to_value(Response {

client/src/rpc_response.rs

@@ -4,7 +4,7 @@ use solana_sdk::{
     clock::{Epoch, Slot},
     fee_calculator::{FeeCalculator, FeeRateGovernor},
     pubkey::Pubkey,
-    transaction::Result,
+    transaction::{Result, TransactionError},
 };
 use std::{collections::HashMap, net::SocketAddr, str::FromStr};
 
@@ -54,6 +54,12 @@ pub struct RpcKeyedAccount {
     pub account: RpcAccount,
 }
 
+#[derive(Serialize, Deserialize, Clone, Debug)]
+#[serde(rename_all = "camelCase")]
+pub struct RpcSignatureResult {
+    pub err: Option<TransactionError>,
+}
+
 /// A duplicate representation of a Message for pretty JSON serialization
 #[derive(Serialize, Deserialize, Clone, Debug)]
 #[serde(rename_all = "camelCase")]