Github user sohami commented on a diff in the pull request:
https://github.com/apache/drill/pull/578#discussion_r99256160
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/rpc/control/ControlClient.java
---
@@ -89,14 +89,42 @@ public MessageLite getResponseDefaultInstance(int
rpcType) throws RpcException {
}
@Override
- protected Response handle(ControlConnection connection, int rpcType,
ByteBuf pBody, ByteBuf dBody) throws RpcException {
- return handler.handle(connection, rpcType, pBody, dBody);
+ protected void handle(ControlConnection connection, int rpcType, ByteBuf
pBody, ByteBuf dBody,
+ ResponseSender sender) throws RpcException {
+ connection.getCurrentHandler().handle(connection, rpcType, pBody,
dBody, sender);
}
@Override
protected void validateHandshake(BitControlHandshake handshake) throws
RpcException {
if (handshake.getRpcVersion() != ControlRpcConfig.RPC_VERSION) {
- throw new RpcException(String.format("Invalid rpc version. Expected
%d, actual %d.", handshake.getRpcVersion(), ControlRpcConfig.RPC_VERSION));
+ throw new RpcException(String.format("Invalid rpc version. Expected
%d, actual %d.",
+ handshake.getRpcVersion(), ControlRpcConfig.RPC_VERSION));
+ }
+
+ if (handshake.getAuthenticationMechanismsCount() != 0) { // remote
requires authentication
--- End diff --
I think we should also have a check for the case if Authentication is
enabled on this **client** and for some reason **server** is sending empty list
of mechanisms list (may be wrong config) then we should throw exception.
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