BlockId removal: refactor: BlockImportOperation+Bknd::finalize_block

It changes the arguments of methods of `BlockImportOperation` trait
from: block: `BlockId<Block>` to: hash: `&Block::Hash`
`Backend::finalize_block` was also changed.

This PR is part of BlockId::Number refactoring analysis (paritytech/substrate#11292)

client/api/src/backend.rs

@@ -216,13 +216,13 @@ pub trait BlockImportOperation<Block: BlockT> {
 	/// Mark a block as finalized.
 	fn mark_finalized(
 		&mut self,
-		id: BlockId<Block>,
+		hash: &Block::Hash,
 		justification: Option<Justification>,
 	) -> sp_blockchain::Result<()>;
 
 	/// Mark a block as new head. If both block import and set head are specified, set head
 	/// overrides block import's best block rule.
-	fn mark_head(&mut self, id: BlockId<Block>) -> sp_blockchain::Result<()>;
+	fn mark_head(&mut self, hash: &Block::Hash) -> sp_blockchain::Result<()>;
 
 	/// Add a transaction index operation.
 	fn update_transaction_index(&mut self, index: Vec<IndexOperation>)
@@ -476,12 +476,12 @@ pub trait Backend<Block: BlockT>: AuxStore + Send + Sync {
 		transaction: Self::BlockImportOperation,
 	) -> sp_blockchain::Result<()>;
 
-	/// Finalize block with given Id.
+	/// Finalize block with given `hash`.
 	///
 	/// This should only be called if the parent of the given block has been finalized.
 	fn finalize_block(
 		&self,
-		block: BlockId<Block>,
+		hash: &Block::Hash,
 		justification: Option<Justification>,
 	) -> sp_blockchain::Result<()>;
 

client/api/src/in_mem.rs

@@ -223,9 +223,9 @@ impl<Block: BlockT> Blockchain<Block> {
 	}
 
 	/// Set an existing block as head.
-	pub fn set_head(&self, id: BlockId<Block>) -> sp_blockchain::Result<()> {
+	pub fn set_head(&self, id: Block::Hash) -> sp_blockchain::Result<()> {
 		let header = self
-			.header(id)?
+			.header(BlockId::Hash(id))?
 			.ok_or_else(|| sp_blockchain::Error::UnknownBlock(format!("{}", id)))?;
 
 		self.apply_head(&header)
@@ -271,21 +271,16 @@ impl<Block: BlockT> Blockchain<Block> {
 
 	fn finalize_header(
 		&self,
-		id: BlockId<Block>,
+		block: &Block::Hash,
 		justification: Option<Justification>,
 	) -> sp_blockchain::Result<()> {
-		let hash = match self.header(id)? {
-			Some(h) => h.hash(),
-			None => return Err(sp_blockchain::Error::UnknownBlock(format!("{}", id))),
-		};
-
 		let mut storage = self.storage.write();
-		storage.finalized_hash = hash;
+		storage.finalized_hash = *block;
 
 		if justification.is_some() {
 			let block = storage
 				.blocks
-				.get_mut(&hash)
+				.get_mut(block)
 				.expect("hash was fetched from a block in the db; qed");
 
 			let block_justifications = match block {
@@ -500,8 +495,8 @@ pub struct BlockImportOperation<Block: BlockT> {
 	new_state:
 		Option<<InMemoryBackend<HashFor<Block>> as StateBackend<HashFor<Block>>>::Transaction>,
 	aux: Vec<(Vec<u8>, Option<Vec<u8>>)>,
-	finalized_blocks: Vec<(BlockId<Block>, Option<Justification>)>,
-	set_head: Option<BlockId<Block>>,
+	finalized_blocks: Vec<(Block::Hash, Option<Justification>)>,
+	set_head: Option<Block::Hash>,
 }
 
 impl<Block: BlockT> BlockImportOperation<Block>
@@ -605,16 +600,16 @@ where
 
 	fn mark_finalized(
 		&mut self,
-		block: BlockId<Block>,
+		hash: &Block::Hash,
 		justification: Option<Justification>,
 	) -> sp_blockchain::Result<()> {
-		self.finalized_blocks.push((block, justification));
+		self.finalized_blocks.push((*hash, justification));
 		Ok(())
 	}
 
-	fn mark_head(&mut self, block: BlockId<Block>) -> sp_blockchain::Result<()> {
+	fn mark_head(&mut self, hash: &Block::Hash) -> sp_blockchain::Result<()> {
 		assert!(self.pending_block.is_none(), "Only one set block per operation is allowed");
-		self.set_head = Some(block);
+		self.set_head = Some(*hash);
 		Ok(())
 	}
 
@@ -710,7 +705,7 @@ where
 	fn commit_operation(&self, operation: Self::BlockImportOperation) -> sp_blockchain::Result<()> {
 		if !operation.finalized_blocks.is_empty() {
 			for (block, justification) in operation.finalized_blocks {
-				self.blockchain.finalize_header(block, justification)?;
+				self.blockchain.finalize_header(&block, justification)?;
 			}
 		}
 
@@ -743,7 +738,7 @@ where
 
 	fn finalize_block(
 		&self,
-		block: BlockId<Block>,
+		block: &Block::Hash,
 		justification: Option<Justification>,
 	) -> sp_blockchain::Result<()> {
 		self.blockchain.finalize_header(block, justification)

client/beefy/src/worker.rs

@@ -1371,8 +1371,10 @@ pub(crate) mod tests {
 		let mut best_block_stream = best_block_streams.drain(..).next().unwrap();
 		net.peer(0).push_blocks(2, false);
 		// finalize 1 and 2 without justifications
-		backend.finalize_block(BlockId::number(1), None).unwrap();
-		backend.finalize_block(BlockId::number(2), None).unwrap();
+		let hashof1 = backend.blockchain().expect_block_hash_from_id(&BlockId::Number(1)).unwrap();
+		let hashof2 = backend.blockchain().expect_block_hash_from_id(&BlockId::Number(2)).unwrap();
+		backend.finalize_block(&hashof1, None).unwrap();
+		backend.finalize_block(&hashof2, None).unwrap();
 
 		let justif = create_finality_proof(2);
 		// create new session at block #2