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Remove unnecessary borrow

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Clippy emits:

    warning: this expression borrows a reference

As suggested remove the unnecessary borrow.
This commit is contained in:
Tobin Harding 2021-07-16 11:13:13 +10:00
parent 9e33cb6d9b
commit e94ff8b9a1
No known key found for this signature in database
GPG key ID: 40BF9E4C269D6607
7 changed files with 29 additions and 31 deletions
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2
src/app.rs
View file

@ -45,7 +45,7 @@ impl App {
let mut tip = self.tip.lock().expect("failed to lock tip");
let new_block = *tip != self.daemon().getbestblockhash()?;
if new_block {
*tip = self.index().update(self.write_store(), &signal)?;
*tip = self.index().update(self.write_store(), signal)?;
}
Ok(new_block)
}

2
src/cache.rs
View file

@ -129,7 +129,7 @@ impl TransactionCache {
F: FnOnce() -> Result<Vec<u8>>,
{
if let Some(serialized_txn) = self.map.lock().unwrap().get(txid) {
return Ok(deserialize(&serialized_txn).chain_err(|| "failed to parse cached tx")?);
return Ok(deserialize(serialized_txn).chain_err(|| "failed to parse cached tx")?);
}
let serialized_txn = load_txn_func()?;
let txn = deserialize(&serialized_txn).chain_err(|| "failed to parse serialized tx")?;

6
src/daemon.rs
View file

@ -513,7 +513,7 @@ impl Daemon {
pub fn getblocktxids(&self, blockhash: &BlockHash) -> Result<Vec<Txid>> {
self.blocktxids_cache
.get_or_else(&blockhash, || self.load_blocktxids(blockhash))
.get_or_else(blockhash, || self.load_blocktxids(blockhash))
}
pub fn gettransaction(
@ -545,7 +545,7 @@ impl Daemon {
let txids: Value = self.request("getrawmempool", json!([/*verbose=*/ false]))?;
let mut result = HashSet::new();
for value in txids.as_array().chain_err(|| "non-array result")? {
result.insert(parse_hash(&value).chain_err(|| "invalid txid")?);
result.insert(parse_hash(value).chain_err(|| "invalid txid")?);
}
Ok(result)
}
@ -589,7 +589,7 @@ impl Daemon {
let null_hash = BlockHash::default();
for heights in all_heights.chunks(chunk_size) {
trace!("downloading {} block headers", heights.len());
let mut headers = self.getblockheaders(&heights)?;
let mut headers = self.getblockheaders(heights)?;
assert!(headers.len() == heights.len());
result.append(&mut headers);
}

6
src/index.rs
View file

@ -176,13 +176,13 @@ pub fn index_transaction<'a>(
if input.previous_output.txid == null_hash {
None
} else {
Some(TxInRow::new(&txid, &input).to_row())
Some(TxInRow::new(&txid, input).to_row())
}
});
let outputs = txn
.output
.iter()
.map(move |output| TxOutRow::new(&txid, &output).to_row());
.map(move |output| TxOutRow::new(&txid, output).to_row());
// Persist transaction ID and confirmed height
inputs
@ -204,7 +204,7 @@ pub fn index_block<'a>(block: &'a Block, height: usize) -> impl 'a + Iterator<It
block
.txdata
.iter()
.flat_map(move |txn| index_transaction(&txn, height))
.flat_map(move |txn| index_transaction(txn, height))
.chain(std::iter::once(row))
}

2
src/metrics.rs
View file

@ -75,7 +75,7 @@ impl Metrics {
self.addr, e
)
});
start_process_exporter(&self);
start_process_exporter(self);
let reg = self.reg.clone();
spawn_thread("metrics", move || loop {
if let Err(e) = handle_request(&reg, server.recv()) {

16
src/query.rs
View file

@ -165,7 +165,7 @@ fn create_merkle_branch_and_root<T: Hash>(mut hashes: Vec<T>, mut index: usize)
// TODO: the functions below can be part of ReadStore.
fn txrow_by_txid(store: &dyn ReadStore, txid: &Txid) -> Option<TxRow> {
let key = TxRow::filter_full(&txid);
let key = TxRow::filter_full(txid);
let value = store.get(&key)?;
Some(TxRow::from_row(&Row { key, value }))
}
@ -192,7 +192,7 @@ fn txids_by_funding_output(
output_index: usize,
) -> Vec<HashPrefix> {
store
.scan(&TxInRow::filter(&txn_id, output_index))
.scan(&TxInRow::filter(txn_id, output_index))
.iter()
.map(|row| TxInRow::from_row(row).txid_prefix)
.collect()
@ -311,7 +311,7 @@ impl Query {
funding.extend(self.find_funding_outputs(&t, script_hash));
}
for funding_output in &funding {
if let Some(spent) = self.find_spending_input(read_store, &funding_output)? {
if let Some(spent) = self.find_spending_input(read_store, funding_output)? {
spending.push(spent);
}
}
@ -332,7 +332,7 @@ impl Query {
}
// // TODO: dedup outputs (somehow) both confirmed and in mempool (e.g. reorg?)
for funding_output in funding.iter().chain(confirmed_funding.iter()) {
if let Some(spent) = self.find_spending_input(tracker.index(), &funding_output)? {
if let Some(spent) = self.find_spending_input(tracker.index(), funding_output)? {
spending.push(spent);
}
}
@ -380,14 +380,14 @@ impl Query {
tx_hash: &Txid,
block_height: Option<u32>,
) -> Result<Option<BlockHash>> {
let blockhash = if self.tracker.read().unwrap().has_txn(&tx_hash) {
let blockhash = if self.tracker.read().unwrap().has_txn(tx_hash) {
None // found in mempool (as unconfirmed transaction)
} else {
// Lookup in confirmed transactions' index
let height = match block_height {
Some(height) => height,
None => {
txrow_by_txid(self.app.read_store(), &tx_hash)
txrow_by_txid(self.app.read_store(), tx_hash)
.chain_err(|| format!("not indexed tx {}", tx_hash))?
.height
}
@ -405,7 +405,7 @@ impl Query {
// Internal API for transaction retrieval
fn load_txn(&self, txid: &Txid, block_height: Option<u32>) -> Result<Transaction> {
let _timer = self.duration.with_label_values(&["load_txn"]).start_timer();
self.tx_cache.get_or_else(&txid, || {
self.tx_cache.get_or_else(txid, || {
let blockhash = self.lookup_confirmed_blockhash(txid, block_height)?;
let value: Value = self
.app
@ -460,7 +460,7 @@ impl Query {
.index()
.get_header(height)
.chain_err(|| format!("missing block #{}", height))?;
let txids = self.app.daemon().getblocktxids(&header_entry.hash())?;
let txids = self.app.daemon().getblocktxids(header_entry.hash())?;
let pos = txids
.iter()
.position(|txid| txid == tx_hash)

26
src/rpc.rs
View file

@ -367,24 +367,22 @@ impl Connection {
.with_label_values(&[method])
.start_timer();
let result = match method {
"blockchain.block.header" => self.blockchain_block_header(&params),
"blockchain.block.headers" => self.blockchain_block_headers(&params),
"blockchain.estimatefee" => self.blockchain_estimatefee(&params),
"blockchain.block.header" => self.blockchain_block_header(params),
"blockchain.block.headers" => self.blockchain_block_headers(params),
"blockchain.estimatefee" => self.blockchain_estimatefee(params),
"blockchain.headers.subscribe" => self.blockchain_headers_subscribe(),
"blockchain.relayfee" => self.blockchain_relayfee(),
"blockchain.scripthash.get_balance" => self.blockchain_scripthash_get_balance(&params),
"blockchain.scripthash.get_history" => self.blockchain_scripthash_get_history(&params),
"blockchain.scripthash.listunspent" => self.blockchain_scripthash_listunspent(&params),
"blockchain.scripthash.subscribe" => self.blockchain_scripthash_subscribe(&params),
"blockchain.transaction.broadcast" => self.blockchain_transaction_broadcast(&params),
"blockchain.transaction.get" => self.blockchain_transaction_get(&params),
"blockchain.transaction.get_merkle" => self.blockchain_transaction_get_merkle(&params),
"blockchain.scripthash.get_balance" => self.blockchain_scripthash_get_balance(params),
"blockchain.scripthash.get_history" => self.blockchain_scripthash_get_history(params),
"blockchain.scripthash.listunspent" => self.blockchain_scripthash_listunspent(params),
"blockchain.scripthash.subscribe" => self.blockchain_scripthash_subscribe(params),
"blockchain.transaction.broadcast" => self.blockchain_transaction_broadcast(params),
"blockchain.transaction.get" => self.blockchain_transaction_get(params),
"blockchain.transaction.get_merkle" => self.blockchain_transaction_get_merkle(params),
"blockchain.transaction.get_confirmed_blockhash" => {
self.blockchain_transaction_get_confirmed_blockhash(&params)
}
"blockchain.transaction.id_from_pos" => {
self.blockchain_transaction_id_from_pos(&params)
self.blockchain_transaction_get_confirmed_blockhash(params)
}
"blockchain.transaction.id_from_pos" => self.blockchain_transaction_id_from_pos(params),
"mempool.get_fee_histogram" => self.mempool_get_fee_histogram(),
"server.banner" => self.server_banner(),
"server.donation_address" => self.server_donation_address(),