Process sudo (#177)

* Process sudo

* Add testing key

node/src/chain_spec/crab.rs

@@ -188,7 +188,7 @@ pub fn genesis_config() -> ChainSpec {
 				treasury: Default::default(),
 
 				// Utility stuff.
-				sudo: Default::default(),
+				sudo: SudoConfig { key: Some(array_bytes::hex_n_into_unchecked(ALITH)) },
 				vesting: Default::default(),
 
 				// XCM stuff.

node/src/chain_spec/darwinia.rs

@@ -188,7 +188,7 @@ pub fn genesis_config() -> ChainSpec {
 				treasury: Default::default(),
 
 				// Utility stuff.
-				sudo: Default::default(),
+				sudo: SudoConfig { key: Some(array_bytes::hex_n_into_unchecked(ALITH)) },
 				vesting: Default::default(),
 
 				// XCM stuff.

node/src/chain_spec/pangolin.rs

@@ -188,7 +188,7 @@ pub fn genesis_config() -> ChainSpec {
 				treasury: Default::default(),
 
 				// Utility stuff.
-				sudo: Default::default(),
+				sudo: SudoConfig { key: Some(array_bytes::hex_n_into_unchecked(ALITH)) },
 				vesting: Default::default(),
 
 				// XCM stuff.

tool/state-processor/src/main.rs

@@ -18,6 +18,7 @@ mod evm;
 mod indices;
 mod proxy;
 mod staking;
+mod sudo;
 mod system;
 mod vesting;
 

tool/state-processor/src/processor.rs

@@ -59,6 +59,7 @@ where
 			.process_indices()
 			.process_vesting()
 			.process_proxy()
+			.process_sudo()
 			.process_staking()
 			.process_evm();
 

tool/state-processor/src/sudo/mod.rs

@@ -0,0 +1,17 @@
+// darwinia
+use crate::*;
+
+impl<S> Processor<S> {
+	pub fn process_sudo(&mut self) -> &mut Self {
+		// Storage items.
+		// https://github.dev/darwinia-network/substrate/blob/darwinia-v0.12.5/frame/sudo/src/lib.rs#L268
+		//
+		// The new sudo key will be set on the genesis side.
+		// We just need to kill the old keys.
+		log::info!("drain solo and para `Sudo::Key`");
+		self.solo_state.take_value(b"Sudo", b"Key", "", &mut [0_u8; 32]);
+		self.para_state.take_value(b"Sudo", b"Key", "", &mut [0_u8; 32]);
+
+		self
+	}
+}