fisher log for equivocation header

core/consensus/aura/Cargo.toml

@@ -26,6 +26,7 @@ tokio = "0.1.7"
 parking_lot = "0.7.1"
 error-chain = "0.12"
 log = "0.4"
+hex = "0.3"
 
 [dev-dependencies]
 keyring = { package = "substrate-keyring", path = "../../keyring" }

core/consensus/aura/src/lib.rs

@@ -472,6 +472,7 @@ fn check_header<C, B: Block, P: Pair>(
 		C: client::backend::AuxStore,
 		P::Public: AsRef<P::Public> + Encode + Decode + PartialEq + Clone,
 {
+	let header_src = header.clone();
 	let digest_item = match header.digest_mut().pop() {
 		Some(x) => x,
 		None => return Err(format!("Header {:?} is unsealed", hash)),
@@ -487,6 +488,9 @@ fn check_header<C, B: Block, P: Pair>(
 		format!("Header {:?} is unsealed", hash)
 	})?;
 
+	trace!(target: "fisher", "[fisher]|header|num:{:}|hash:{:}|pre_hash:{:}|encoded:{:}",
+		   header_src.number(), header_src.hash(), header.hash(), hex::encode(header_src.encode()));
+
 	if slot_num > slot_now {
 		header.digest_mut().push(digest_item);
 		Ok(CheckedHeader::Deferred(header, slot_num))
@@ -518,6 +522,12 @@ fn check_header<C, B: Block, P: Pair>(
 						equivocation_proof.snd_header().hash(),
 					);
 					info!("{}", log_str);
+
+					debug!(target: "fisher", "[fisher]|equivocation|fst_pre_hash:{:}|snd_pre_hash:{:}",
+						   equivocation_proof.fst_header().hash(),
+						   equivocation_proof.snd_header().hash(),
+					);
+
 					Err(log_str)
 				},
 				Ok(None) => Ok(CheckedHeader::Checked(header, digest_item)),