Bump Kvproto (#30)

Signed-off-by: Ana Hobden <operator@hoverbear.org>

Author: Hoverbear

Cargo.toml

@@ -26,6 +26,7 @@ failure = "0.1"
 
 [dependencies.kvproto]
 git = "https://github.com/pingcap/kvproto.git"
+rev  = "f9b9e7d362c7cc2c90202fc7c300b2e466cbfbf2"
 
 [dependencies.prometheus]
 version = "0.4.2"

src/rpc/tikv/client.rs

@@ -46,14 +46,14 @@ impl From<errorpb::Error> for Error {
         } else if e.has_region_not_found() {
             Error::region_not_found(e.get_region_not_found().get_region_id(), Some(message))
         } else if e.has_key_not_in_region() {
-            Error::key_not_in_region(e.take_key_not_in_region())
-        } else if e.has_stale_epoch() {
-            let message = format!(
+            let mut e = e.take_key_not_in_region();
+            Error::key_not_in_region(e)
+        } else if e.has_epoch_not_match() {
+            Error::stale_epoch(Some(format!(
                 "{}. New epoch: {:?}",
                 message,
-                e.get_stale_epoch().get_new_regions()
-            );
-            Error::stale_epoch(Some(message))
+                e.get_epoch_not_match().get_current_regions()
+            )))
         } else if e.has_server_is_busy() {
             Error::server_is_busy(e.take_server_is_busy())
         } else if e.has_stale_command() {