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moved creation of blockchains db transaction to apply_update function

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This commit is contained in:
debris 2016-02-27 10:19:33 +01:00
parent d57518d90c
commit 01f69ca80c
2 changed files with 65 additions and 73 deletions
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116
ethcore/src/blockchain/blockchain.rs
View File

@ -417,23 +417,23 @@ impl BlockChain {
// store block in db
self.blocks_db.put(&hash, &bytes).unwrap();
let batch = DBTransaction::new();
let info = self.block_info(bytes);
batch.put(b"best", &info.hash).unwrap();
self.apply_update(ExtrasUpdate {
block_numbers: self.prepare_block_hashes_update(bytes, &info, &batch),
block_details_hashes: self.prepare_block_details_update(bytes, &info, &batch),
block_receipts_hashes: self.prepare_block_receipts_update(receipts, &info, &batch),
transactions_addresses_hashes: self.prepare_transaction_addresses_update(bytes, &info, &batch),
bloom_hashes: self.prepare_block_blooms_update(bytes, &info, &batch),
batch: batch,
block_hashes: self.prepare_block_hashes_update(bytes, &info),
block_details: self.prepare_block_details_update(bytes, &info),
block_receipts: self.prepare_block_receipts_update(receipts, &info),
transactions_addresses: self.prepare_transaction_addresses_update(bytes, &info),
blocks_blooms: self.prepare_block_blooms_update(bytes, &info),
info: info
});
}
/// Applies extras update.
fn apply_update(&self, update: ExtrasUpdate) {
let batch = DBTransaction::new();
batch.put(b"best", &update.info.hash).unwrap();
// update best block
let mut best_block = self.best_block.write().unwrap();
match update.info.location {
@ -448,32 +448,37 @@ impl BlockChain {
}
let mut write_hashes = self.block_hashes.write().unwrap();
for number in &update.block_numbers {
for (number, hash) in &update.block_hashes {
batch.put_extras(number, hash);
write_hashes.remove(number);
}
let mut write_details = self.block_details.write().unwrap();
for hash in &update.block_details_hashes {
write_details.remove(hash);
for (hash, details) in update.block_details.into_iter() {
batch.put_extras(&hash, &details);
write_details.insert(hash, details);
}
let mut write_receipts = self.block_receipts.write().unwrap();
for hash in &update.block_receipts_hashes {
for (hash, receipt) in &update.block_receipts {
batch.put_extras(hash, receipt);
write_receipts.remove(hash);
}
let mut write_txs = self.transaction_addresses.write().unwrap();
for hash in &update.transactions_addresses_hashes {
for (hash, tx_address) in &update.transactions_addresses {
batch.put_extras(hash, tx_address);
write_txs.remove(hash);
}
let mut write_blocks_blooms = self.blocks_blooms.write().unwrap();
for bloom_hash in &update.bloom_hashes {
for (bloom_hash, blocks_bloom) in &update.blocks_blooms {
batch.put_extras(bloom_hash, blocks_bloom);
write_blocks_blooms.remove(bloom_hash);
}
//// update extras database
self.extras_db.write(update.batch).unwrap();
// update extras database
self.extras_db.write(batch).unwrap();
}
/// Get inserted block info which is critical to preapre extras updates.
@ -514,40 +519,35 @@ impl BlockChain {
}
}
/// This function updates block number to block hash mappings and writes them to db batch.
///
/// Returns modified block numbers.
fn prepare_block_hashes_update(&self, block_bytes: &[u8], info: &BlockInfo, batch: &DBTransaction) -> HashSet<BlockNumber> {
/// This function returns modified block hashes.
fn prepare_block_hashes_update(&self, block_bytes: &[u8], info: &BlockInfo) -> HashMap<BlockNumber, H256> {
let mut block_hashes = HashMap::new();
let block = BlockView::new(block_bytes);
let header = block.header_view();
let number = header.number();
match info.location {
BlockLocation::Branch => vec![],
BlockLocation::Branch => (),
BlockLocation::CanonChain => {
batch.put_extras(&number, &info.hash);
vec![number]
block_hashes.insert(number, info.hash.clone());
},
BlockLocation::BranchBecomingCanonChain { ref ancestor, ref route } => {
let ancestor_number = self.block_number(ancestor).unwrap();
let start_number = ancestor_number + 1;
for (index, hash) in route.iter().enumerate() {
batch.put_extras(&(start_number + index as BlockNumber), hash);
for (index, hash) in route.iter().cloned().enumerate() {
block_hashes.insert(start_number + index as BlockNumber, hash);
}
batch.put_extras(&number, &info.hash);
let mut numbers: Vec<BlockNumber> = (start_number..start_number + route.len() as BlockNumber).into_iter().collect();
numbers.push(number);
numbers
block_hashes.insert(number, info.hash.clone());
}
}.into_iter().collect()
}
/// This function creates current block details, updates parent block details and writes them to db batch.
///
/// Returns hashes of modified block details.
fn prepare_block_details_update(&self, block_bytes: &[u8], info: &BlockInfo, batch: &DBTransaction) -> HashSet<H256> {
block_hashes
}
/// This function returns modified block details.
fn prepare_block_details_update(&self, block_bytes: &[u8], info: &BlockInfo) -> HashMap<H256, BlockDetails> {
let block = BlockView::new(block_bytes);
let header = block.header_view();
let parent_hash = header.parent_hash();
@ -565,39 +565,39 @@ impl BlockChain {
};
// write to batch
batch.put_extras(&parent_hash, &parent_details);
batch.put_extras(&info.hash, &details);
vec![parent_hash, info.hash.clone()].into_iter().collect()
let mut block_details = HashMap::new();
block_details.insert(parent_hash, parent_details);
block_details.insert(info.hash.clone(), details);
block_details
}
/// This function writes block receipts to db batch and returns hashes of modified receipts.
fn prepare_block_receipts_update(&self, receipts: Vec<Receipt>, info: &BlockInfo, batch: &DBTransaction) -> HashSet<H256> {
batch.put_extras(&info.hash, &BlockReceipts::new(receipts));
vec![info.hash.clone()].into_iter().collect()
/// This function returns modified block receipts.
fn prepare_block_receipts_update(&self, receipts: Vec<Receipt>, info: &BlockInfo) -> HashMap<H256, BlockReceipts> {
let mut block_receipts = HashMap::new();
block_receipts.insert(info.hash.clone(), BlockReceipts::new(receipts));
block_receipts
}
/// This function writes mapping from transaction hash to transaction address to database.
///
/// Returns hashes of modified mappings.
fn prepare_transaction_addresses_update(&self, block_bytes: &[u8], info: &BlockInfo, batch: &DBTransaction) -> HashSet<H256> {
/// This function returns modified transaction addresses.
fn prepare_transaction_addresses_update(&self, block_bytes: &[u8], info: &BlockInfo) -> HashMap<H256, TransactionAddress> {
let block = BlockView::new(block_bytes);
let transaction_hashes = block.transaction_hashes();
// update transaction addresses
for (i, tx_hash) in transaction_hashes.iter().enumerate() {
batch.put_extras(tx_hash, &TransactionAddress {
transaction_hashes.into_iter()
.enumerate()
.fold(HashMap::new(), |mut acc, (i ,tx_hash)| {
acc.insert(tx_hash, TransactionAddress {
block_hash: info.hash.clone(),
index: i
});
acc
})
}
transaction_hashes.into_iter().collect()
}
/// This functions update blcoks blooms and writes them to db batch.
/// This functions returns modified blocks blooms.
///
/// TODO: this function needs comprehensive description.
fn prepare_block_blooms_update(&self, block_bytes: &[u8], info: &BlockInfo, batch: &DBTransaction) -> HashSet<H256> {
fn prepare_block_blooms_update(&self, block_bytes: &[u8], info: &BlockInfo) -> HashMap<H256, BlocksBlooms> {
let block = BlockView::new(block_bytes);
let header = block.header_view();
@ -623,7 +623,7 @@ impl BlockChain {
}
};
let indexed_blocks_blooms = modified_blooms.into_iter()
modified_blooms.into_iter()
.fold(HashMap::new(), | mut acc, (bloom_index, bloom) | {
{
let location = self.bloom_indexer.location(&bloom_index);
@ -634,13 +634,7 @@ impl BlockChain {
blocks_blooms.blooms[location.index] = bloom;
}
acc
});
for (bloom_hash, blocks_blooms) in &indexed_blocks_blooms {
batch.put_extras(bloom_hash, blocks_blooms);
}
indexed_blocks_blooms.into_iter().map(|(bloom_hash, _)| bloom_hash).collect()
})
}
/// Get best block hash.

16
ethcore/src/blockchain/update.rs
View File

@ -1,23 +1,21 @@
use std::collections::HashSet;
use std::collections::HashMap;
use util::hash::H256;
use util::kvdb::DBTransaction;
use header::BlockNumber;
use blockchain::block_info::BlockInfo;
use extras::{BlockDetails, BlockReceipts, TransactionAddress, BlocksBlooms};
/// Block extras update info.
pub struct ExtrasUpdate {
/// Block info.
pub info: BlockInfo,
/// DB update batch.
pub batch: DBTransaction,
/// Numbers of blocks to update in block hashes cache.
pub block_numbers: HashSet<BlockNumber>,
pub block_hashes: HashMap<BlockNumber, H256>,
/// Hashes of blocks to update in block details cache.
pub block_details_hashes: HashSet<H256>,
pub block_details: HashMap<H256, BlockDetails>,
/// Hashes of receipts to update in block receipts cache.
pub block_receipts_hashes: HashSet<H256>,
pub block_receipts: HashMap<H256, BlockReceipts>,
/// Hashes of transactions to update in transactions addresses cache.
pub transactions_addresses_hashes: HashSet<H256>,
pub transactions_addresses: HashMap<H256, TransactionAddress>,
/// Changed blocks bloom location hashes.
pub bloom_hashes: HashSet<H256>,
pub blocks_blooms: HashMap<H256, BlocksBlooms>,
}