Merge branch 'master' into finduncles

ethcore/src/blockchain/blockchain.rs

@@ -466,7 +466,8 @@ impl BlockChain {
 		let mut write_details = self.block_details.write().unwrap();
 		for (hash, details) in update.block_details.into_iter() {
 			batch.put_extras(&hash, &details);
-			write_details.insert(hash, details);
+			write_details.insert(hash.clone(), details);
+			self.note_used(CacheID::Extras(ExtrasIndex::BlockDetails, hash));
 		}
 
 		let mut write_receipts = self.block_receipts.write().unwrap();
@@ -802,6 +803,14 @@ impl BlockChain {
 
 				// TODO: handle block_hashes properly.
 				block_hashes.clear();
+
+				blocks.shrink_to_fit();
+				block_details.shrink_to_fit();
+ 				block_hashes.shrink_to_fit();
+ 				transaction_addresses.shrink_to_fit();
+ 				block_logs.shrink_to_fit();
+ 				blocks_blooms.shrink_to_fit();
+ 				block_receipts.shrink_to_fit();
 			}
 			if self.cache_size().total() < self.max_cache_size { break; }
 		}

ethcore/src/client.rs

@@ -123,6 +123,9 @@ pub trait BlockChainClient : Sync + Send {
 	/// Get block total difficulty.
 	fn block_total_difficulty(&self, id: BlockId) -> Option<U256>;
 
+	/// Get block hash.
+	fn block_hash(&self, id: BlockId) -> Option<H256>;
+
 	/// Get address code.
 	fn code(&self, address: &Address) -> Option<Bytes>;
 
@@ -540,6 +543,11 @@ impl BlockChainClient for Client {
 		Self::block_hash(&chain, id).and_then(|hash| chain.block_details(&hash)).map(|d| d.total_difficulty)
 	}
 
+	fn block_hash(&self, id: BlockId) -> Option<H256> {
+		let chain = self.chain.read().unwrap();
+		Self::block_hash(&chain, id)
+	}
+
 	fn code(&self, address: &Address) -> Option<Bytes> {
 		self.state().code(address)
 	}

ethcore/src/filter.rs

@@ -42,6 +42,22 @@ pub struct Filter {
 	pub topics: [Option<Vec<H256>>; 4],
 }
 
+impl Clone for Filter {
+	fn clone(&self) -> Self {
+		let mut topics = [None, None, None, None];
+		for i in 0..4 {
+			topics[i] = self.topics[i].clone();
+		}
+
+		Filter {
+			from_block: self.from_block.clone(),
+			to_block: self.to_block.clone(),
+			address: self.address.clone(),
+			topics: topics
+		}
+	}
+}
+
 impl Filter {
 	/// Returns combinations of each address and topic.	
 	pub fn bloom_possibilities(&self) -> Vec<H2048> {

ethcore/src/tests/client.rs

@@ -108,6 +108,25 @@ fn can_collect_garbage() {
 	assert!(client.blockchain_cache_info().blocks < 100 * 1024);
 }
 
+#[test]
+fn can_handle_long_fork() {
+	let client_result = generate_dummy_client(1200);
+	let client = client_result.reference();
+	for _ in 0..10 {
+		client.import_verified_blocks(&IoChannel::disconnected());
+	}
+	assert_eq!(1200, client.chain_info().best_block_number);
+
+	push_blocks_to_client(client, 45, 1201, 800);
+	push_blocks_to_client(client, 49, 1201, 800);
+	push_blocks_to_client(client, 53, 1201, 600);
+
+	for _ in 0..20 {
+		client.import_verified_blocks(&IoChannel::disconnected());
+	}
+	assert_eq!(2000, client.chain_info().best_block_number);
+}
+
 #[test]
 fn can_mine() {
 	let dummy_blocks = get_good_dummy_block_seq(2);
@@ -122,7 +141,7 @@ fn can_mine() {
 				b.hash()
 			}
 			None => { panic!(); }
-		}	
+		}
 	};
 	assert!(client.submit_seal(pow_hash, vec![]).is_ok());
-}
+}

ethcore/src/tests/helpers.rs

@@ -156,10 +156,9 @@ pub fn generate_dummy_client(block_number: u32) -> GuardedTempResult<Arc<Client>
 		rolling_block_number = rolling_block_number + 1;
 		rolling_timestamp = rolling_timestamp + 10;
 
-		if let Err(_) = client.import_block(create_test_block(&header)) {
-			panic!("error importing block which is valid by definition");
+		if let Err(e) = client.import_block(create_test_block(&header)) {
+			panic!("error importing block which is valid by definition: {:?}", e);
 		}
-
 	}
 	client.flush_queue();
 	client.import_verified_blocks(&IoChannel::disconnected());
@@ -170,6 +169,34 @@ pub fn generate_dummy_client(block_number: u32) -> GuardedTempResult<Arc<Client>
 	}
 }
 
+pub fn push_blocks_to_client(client: &Arc<Client>, timestamp_salt: u64, starting_number: usize, block_number: usize) {
+	let test_spec = get_test_spec();
+	let test_engine = test_spec.to_engine().unwrap();
+	let state_root = test_engine.spec().genesis_header().state_root;
+	let mut rolling_hash = client.chain_info().best_block_hash;
+	let mut rolling_block_number = starting_number as u64;
+	let mut rolling_timestamp = timestamp_salt + starting_number as u64 * 10;
+
+	for _ in 0..block_number {
+		let mut header = Header::new();
+
+		header.gas_limit = decode(test_engine.spec().engine_params.get("minGasLimit").unwrap());
+		header.difficulty = decode(test_engine.spec().engine_params.get("minimumDifficulty").unwrap());
+		header.timestamp = rolling_timestamp;
+		header.number = rolling_block_number;
+		header.parent_hash = rolling_hash;
+		header.state_root = state_root.clone();
+
+		rolling_hash = header.hash();
+		rolling_block_number = rolling_block_number + 1;
+		rolling_timestamp = rolling_timestamp + 10;
+
+		if let Err(e) = client.import_block(create_test_block(&header)) {
+			panic!("error importing block which is valid by definition: {:?}", e);
+		}
+	}
+}
+
 pub fn get_test_client_with_blocks(blocks: Vec<Bytes>) -> GuardedTempResult<Arc<Client>> {
 	let dir = RandomTempPath::new();
 	let client = Client::new(ClientConfig::default(), get_test_spec(), dir.as_path(), IoChannel::disconnected()).unwrap();
@@ -253,18 +280,29 @@ pub fn get_temp_state_in(path: &Path) -> State {
 pub fn get_good_dummy_block_seq(count: usize) -> Vec<Bytes> {
 	let test_spec = get_test_spec();
 	let test_engine = test_spec.to_engine().unwrap();
-	let mut parent = test_engine.spec().genesis_header().hash();
+  	get_good_dummy_block_fork_seq(1, count, &test_engine.spec().genesis_header().hash())
+}
+
+pub fn get_good_dummy_block_fork_seq(start_number: usize, count: usize, parent_hash: &H256) -> Vec<Bytes> {
+	let test_spec = get_test_spec();
+	let test_engine = test_spec.to_engine().unwrap();
+	let mut rolling_timestamp = start_number as u64 * 10;
+	let mut parent = *parent_hash;
 	let mut r = Vec::new();
-	for i in 1 .. count + 1 {
+	for i in start_number .. start_number + count + 1 {
 		let mut block_header = Header::new();
 		block_header.gas_limit = decode(test_engine.spec().engine_params.get("minGasLimit").unwrap());
-		block_header.difficulty = decode(test_engine.spec().engine_params.get("minimumDifficulty").unwrap());
-		block_header.timestamp = i as u64;
+		block_header.difficulty = U256::from(i).mul(U256([0, 1, 0, 0]));
+		block_header.timestamp = rolling_timestamp;
 		block_header.number = i as u64;
 		block_header.parent_hash = parent;
 		block_header.state_root = test_engine.spec().genesis_header().state_root;
+
 		parent = block_header.hash();
+		rolling_timestamp = rolling_timestamp + 10;
+
 		r.push(create_test_block(&block_header));
+
 	}
 	r
 }