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#![allow(clippy::result_large_err)]
use std::collections::HashMap;
use std::fmt;
use std::io;
use bitcoin::consensus;
use bitcoin::{BlockHash, Txid};
pub mod api;
#[cfg(any(feature = "async", feature = "async-https"))]
pub mod r#async;
#[cfg(feature = "blocking")]
pub mod blocking;
pub use api::*;
#[cfg(feature = "blocking")]
pub use blocking::BlockingClient;
#[cfg(any(feature = "async", feature = "async-https"))]
pub use r#async::AsyncClient;
pub fn convert_fee_rate(target: usize, estimates: HashMap<String, f64>) -> Result<f32, Error> {
let fee_val = {
let mut pairs = estimates
.into_iter()
.filter_map(|(k, v)| Some((k.parse::<usize>().ok()?, v)))
.collect::<Vec<_>>();
pairs.sort_unstable_by_key(|(k, _)| std::cmp::Reverse(*k));
pairs
.into_iter()
.find(|(k, _)| k <= &target)
.map(|(_, v)| v)
.unwrap_or(1.0)
};
Ok(fee_val as f32)
}
#[derive(Debug, Clone)]
pub struct Builder {
pub base_url: String,
pub proxy: Option<String>,
pub timeout: Option<u64>,
}
impl Builder {
pub fn new(base_url: &str) -> Self {
Builder {
base_url: base_url.to_string(),
proxy: None,
timeout: None,
}
}
pub fn proxy(mut self, proxy: &str) -> Self {
self.proxy = Some(proxy.to_string());
self
}
pub fn timeout(mut self, timeout: u64) -> Self {
self.timeout = Some(timeout);
self
}
#[cfg(feature = "blocking")]
pub fn build_blocking(self) -> Result<BlockingClient, Error> {
BlockingClient::from_builder(self)
}
#[cfg(feature = "async")]
pub fn build_async(self) -> Result<AsyncClient, Error> {
AsyncClient::from_builder(self)
}
}
#[derive(Debug)]
pub enum Error {
#[cfg(feature = "blocking")]
Ureq(::ureq::Error),
#[cfg(feature = "blocking")]
UreqTransport(::ureq::Transport),
#[cfg(any(feature = "async", feature = "async-https"))]
Reqwest(::reqwest::Error),
HttpResponse(u16),
Io(io::Error),
NoHeader,
Parsing(std::num::ParseIntError),
BitcoinEncoding(bitcoin::consensus::encode::Error),
Hex(bitcoin::hashes::hex::Error),
TransactionNotFound(Txid),
HeaderHeightNotFound(u32),
HeaderHashNotFound(BlockHash),
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{:?}", self)
}
}
macro_rules! impl_error {
( $from:ty, $to:ident ) => {
impl_error!($from, $to, Error);
};
( $from:ty, $to:ident, $impl_for:ty ) => {
impl std::convert::From<$from> for $impl_for {
fn from(err: $from) -> Self {
<$impl_for>::$to(err)
}
}
};
}
impl std::error::Error for Error {}
#[cfg(feature = "blocking")]
impl_error!(::ureq::Transport, UreqTransport, Error);
#[cfg(any(feature = "async", feature = "async-https"))]
impl_error!(::reqwest::Error, Reqwest, Error);
impl_error!(io::Error, Io, Error);
impl_error!(std::num::ParseIntError, Parsing, Error);
impl_error!(consensus::encode::Error, BitcoinEncoding, Error);
impl_error!(bitcoin::hashes::hex::Error, Hex, Error);
#[cfg(test)]
mod test {
use super::*;
use electrsd::{bitcoind, bitcoind::BitcoinD, ElectrsD};
use lazy_static::lazy_static;
use std::env;
use tokio::sync::Mutex;
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
use {
bitcoin::hashes::Hash,
bitcoin::Amount,
electrsd::{
bitcoind::bitcoincore_rpc::bitcoincore_rpc_json::AddressType,
bitcoind::bitcoincore_rpc::RpcApi,
},
electrum_client::ElectrumApi,
std::time::Duration,
tokio::sync::OnceCell,
};
lazy_static! {
static ref BITCOIND: BitcoinD = {
let bitcoind_exe = env::var("BITCOIND_EXE")
.ok()
.or_else(|| bitcoind::downloaded_exe_path().ok())
.expect(
"you need to provide an env var BITCOIND_EXE or specify a bitcoind version feature",
);
let conf = bitcoind::Conf::default();
BitcoinD::with_conf(bitcoind_exe, &conf).unwrap()
};
static ref ELECTRSD: ElectrsD = {
let electrs_exe = env::var("ELECTRS_EXE")
.ok()
.or_else(electrsd::downloaded_exe_path)
.expect(
"you need to provide env var ELECTRS_EXE or specify an electrsd version feature",
);
let mut conf = electrsd::Conf::default();
conf.http_enabled = true;
ElectrsD::with_conf(electrs_exe, &BITCOIND, &conf).unwrap()
};
static ref MINER: Mutex<()> = Mutex::new(());
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
static PREMINE: OnceCell<()> = OnceCell::const_new();
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
async fn setup_clients() -> (BlockingClient, AsyncClient) {
PREMINE
.get_or_init(|| async {
let _miner = MINER.lock().await;
generate_blocks_and_wait(101);
})
.await;
let esplora_url = ELECTRSD.esplora_url.as_ref().unwrap();
let builder = Builder::new(&format!("http://{}", esplora_url));
let blocking_client = builder.build_blocking().unwrap();
let builder_async = Builder::new(&format!("http://{}", esplora_url));
let async_client = builder_async.build_async().unwrap();
(blocking_client, async_client)
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
fn generate_blocks_and_wait(num: usize) {
let cur_height = BITCOIND.client.get_block_count().unwrap();
generate_blocks(num);
wait_for_block(cur_height as usize + num);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
fn generate_blocks(num: usize) {
let address = BITCOIND
.client
.get_new_address(Some("test"), Some(AddressType::Legacy))
.unwrap();
let _block_hashes = BITCOIND
.client
.generate_to_address(num as u64, &address)
.unwrap();
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
fn wait_for_block(min_height: usize) {
let mut header = ELECTRSD.client.block_headers_subscribe().unwrap();
loop {
if header.height >= min_height {
break;
}
header = exponential_backoff_poll(|| {
ELECTRSD.trigger().unwrap();
ELECTRSD.client.ping().unwrap();
ELECTRSD.client.block_headers_pop().unwrap()
});
}
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
fn exponential_backoff_poll<T, F>(mut poll: F) -> T
where
F: FnMut() -> Option<T>,
{
let mut delay = Duration::from_millis(64);
loop {
match poll() {
Some(data) => break data,
None if delay.as_millis() < 512 => delay = delay.mul_f32(2.0),
None => {}
}
std::thread::sleep(delay);
}
}
#[test]
fn feerate_parsing() {
let esplora_fees = serde_json::from_str::<HashMap<String, f64>>(
r#"{
"25": 1.015,
"5": 2.3280000000000003,
"12": 2.0109999999999997,
"15": 1.018,
"17": 1.018,
"11": 2.0109999999999997,
"3": 3.01,
"2": 4.9830000000000005,
"6": 2.2359999999999998,
"21": 1.018,
"13": 1.081,
"7": 2.2359999999999998,
"8": 2.2359999999999998,
"16": 1.018,
"20": 1.018,
"22": 1.017,
"23": 1.017,
"504": 1,
"9": 2.2359999999999998,
"14": 1.018,
"10": 2.0109999999999997,
"24": 1.017,
"1008": 1,
"1": 4.9830000000000005,
"4": 2.3280000000000003,
"19": 1.018,
"144": 1,
"18": 1.018
}
"#,
)
.unwrap();
assert_eq!(convert_fee_rate(6, esplora_fees.clone()).unwrap(), 2.236);
assert_eq!(
convert_fee_rate(26, esplora_fees).unwrap(),
1.015,
"should inherit from value for 25"
);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_tx() {
let (blocking_client, async_client) = setup_clients().await;
let address = BITCOIND
.client
.get_new_address(Some("test"), Some(AddressType::Legacy))
.unwrap();
let txid = BITCOIND
.client
.send_to_address(
&address,
Amount::from_sat(1000),
None,
None,
None,
None,
None,
None,
)
.unwrap();
let _miner = MINER.lock().await;
generate_blocks_and_wait(1);
let tx = blocking_client.get_tx(&txid).unwrap();
let tx_async = async_client.get_tx(&txid).await.unwrap();
assert_eq!(tx, tx_async);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_tx_no_opt() {
let (blocking_client, async_client) = setup_clients().await;
let address = BITCOIND
.client
.get_new_address(Some("test"), Some(AddressType::Legacy))
.unwrap();
let txid = BITCOIND
.client
.send_to_address(
&address,
Amount::from_sat(1000),
None,
None,
None,
None,
None,
None,
)
.unwrap();
let _miner = MINER.lock().await;
generate_blocks_and_wait(1);
let tx_no_opt = blocking_client.get_tx_no_opt(&txid).unwrap();
let tx_no_opt_async = async_client.get_tx_no_opt(&txid).await.unwrap();
assert_eq!(tx_no_opt, tx_no_opt_async);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_tx_status() {
let (blocking_client, async_client) = setup_clients().await;
let address = BITCOIND
.client
.get_new_address(Some("test"), Some(AddressType::Legacy))
.unwrap();
let txid = BITCOIND
.client
.send_to_address(
&address,
Amount::from_sat(1000),
None,
None,
None,
None,
None,
None,
)
.unwrap();
let _miner = MINER.lock().await;
generate_blocks_and_wait(1);
let tx_status = blocking_client.get_tx_status(&txid).unwrap().unwrap();
let tx_status_async = async_client.get_tx_status(&txid).await.unwrap().unwrap();
assert_eq!(tx_status, tx_status_async);
assert!(tx_status.confirmed);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_header_by_hash() {
let (blocking_client, async_client) = setup_clients().await;
let block_hash = BITCOIND.client.get_block_hash(23).unwrap();
let block_header = blocking_client.get_header_by_hash(&block_hash).unwrap();
let block_header_async = async_client.get_header_by_hash(&block_hash).await.unwrap();
assert_eq!(block_header, block_header_async);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_block_status() {
let (blocking_client, async_client) = setup_clients().await;
let block_hash = BITCOIND.client.get_block_hash(21).unwrap();
let next_block_hash = BITCOIND.client.get_block_hash(22).unwrap();
let expected = BlockStatus {
in_best_chain: true,
height: Some(21),
next_best: Some(next_block_hash),
};
let block_status = blocking_client.get_block_status(&block_hash).unwrap();
let block_status_async = async_client.get_block_status(&block_hash).await.unwrap();
assert_eq!(expected, block_status);
assert_eq!(expected, block_status_async);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_non_existing_block_status() {
let (blocking_client, async_client) = setup_clients().await;
let block_hash = BlockHash::all_zeros();
let expected = BlockStatus {
in_best_chain: false,
height: None,
next_best: None,
};
let block_status = blocking_client.get_block_status(&block_hash).unwrap();
let block_status_async = async_client.get_block_status(&block_hash).await.unwrap();
assert_eq!(expected, block_status);
assert_eq!(expected, block_status_async);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_block_by_hash() {
let (blocking_client, async_client) = setup_clients().await;
let block_hash = BITCOIND.client.get_block_hash(21).unwrap();
let expected = Some(BITCOIND.client.get_block(&block_hash).unwrap());
let block = blocking_client.get_block_by_hash(&block_hash).unwrap();
let block_async = async_client.get_block_by_hash(&block_hash).await.unwrap();
assert_eq!(expected, block);
assert_eq!(expected, block_async);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_block_by_hash_not_existing() {
let (blocking_client, async_client) = setup_clients().await;
let block = blocking_client
.get_block_by_hash(&BlockHash::all_zeros())
.unwrap();
let block_async = async_client
.get_block_by_hash(&BlockHash::all_zeros())
.await
.unwrap();
assert!(block.is_none());
assert!(block_async.is_none());
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_merkle_proof() {
let (blocking_client, async_client) = setup_clients().await;
let address = BITCOIND
.client
.get_new_address(Some("test"), Some(AddressType::Legacy))
.unwrap();
let txid = BITCOIND
.client
.send_to_address(
&address,
Amount::from_sat(1000),
None,
None,
None,
None,
None,
None,
)
.unwrap();
let _miner = MINER.lock().await;
generate_blocks_and_wait(1);
let merkle_proof = blocking_client.get_merkle_proof(&txid).unwrap().unwrap();
let merkle_proof_async = async_client.get_merkle_proof(&txid).await.unwrap().unwrap();
assert_eq!(merkle_proof, merkle_proof_async);
assert!(merkle_proof.pos > 0);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_merkle_block() {
let (blocking_client, async_client) = setup_clients().await;
let address = BITCOIND
.client
.get_new_address(Some("test"), Some(AddressType::Legacy))
.unwrap();
let txid = BITCOIND
.client
.send_to_address(
&address,
Amount::from_sat(1000),
None,
None,
None,
None,
None,
None,
)
.unwrap();
let _miner = MINER.lock().await;
generate_blocks_and_wait(1);
let merkle_block = blocking_client.get_merkle_block(&txid).unwrap().unwrap();
let merkle_block_async = async_client.get_merkle_block(&txid).await.unwrap().unwrap();
assert_eq!(merkle_block, merkle_block_async);
let mut matches = vec![txid];
let mut indexes = vec![];
let root = merkle_block
.txn
.extract_matches(&mut matches, &mut indexes)
.unwrap();
assert_eq!(root, merkle_block.header.merkle_root);
assert_eq!(indexes.len(), 1);
assert!(indexes[0] > 0);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_output_status() {
let (blocking_client, async_client) = setup_clients().await;
let address = BITCOIND
.client
.get_new_address(Some("test"), Some(AddressType::Legacy))
.unwrap();
let txid = BITCOIND
.client
.send_to_address(
&address,
Amount::from_sat(1000),
None,
None,
None,
None,
None,
None,
)
.unwrap();
let _miner = MINER.lock().await;
generate_blocks_and_wait(1);
let output_status = blocking_client
.get_output_status(&txid, 1)
.unwrap()
.unwrap();
let output_status_async = async_client
.get_output_status(&txid, 1)
.await
.unwrap()
.unwrap();
assert_eq!(output_status, output_status_async);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_height() {
let (blocking_client, async_client) = setup_clients().await;
let block_height = blocking_client.get_height().unwrap();
let block_height_async = async_client.get_height().await.unwrap();
assert!(block_height > 0);
assert_eq!(block_height, block_height_async);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_tip_hash() {
let (blocking_client, async_client) = setup_clients().await;
let tip_hash = blocking_client.get_tip_hash().unwrap();
let tip_hash_async = async_client.get_tip_hash().await.unwrap();
assert_eq!(tip_hash, tip_hash_async);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_block_hash() {
let (blocking_client, async_client) = setup_clients().await;
let block_hash = BITCOIND.client.get_block_hash(21).unwrap();
let block_hash_blocking = blocking_client.get_block_hash(21).unwrap();
let block_hash_async = async_client.get_block_hash(21).await.unwrap();
assert_eq!(block_hash, block_hash_blocking);
assert_eq!(block_hash, block_hash_async);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_txid_at_block_index() {
let (blocking_client, async_client) = setup_clients().await;
let block_hash = BITCOIND.client.get_block_hash(23).unwrap();
let txid_at_block_index = blocking_client
.get_txid_at_block_index(&block_hash, 0)
.unwrap()
.unwrap();
let txid_at_block_index_async = async_client
.get_txid_at_block_index(&block_hash, 0)
.await
.unwrap()
.unwrap();
assert_eq!(txid_at_block_index, txid_at_block_index_async);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_fee_estimates() {
let (blocking_client, async_client) = setup_clients().await;
let fee_estimates = blocking_client.get_fee_estimates().unwrap();
let fee_estimates_async = async_client.get_fee_estimates().await.unwrap();
assert_eq!(fee_estimates.len(), fee_estimates_async.len());
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_scripthash_txs() {
let (blocking_client, async_client) = setup_clients().await;
let address = BITCOIND
.client
.get_new_address(Some("test"), Some(AddressType::Legacy))
.unwrap();
let txid = BITCOIND
.client
.send_to_address(
&address,
Amount::from_sat(1000),
None,
None,
None,
None,
None,
None,
)
.unwrap();
let _miner = MINER.lock().await;
generate_blocks_and_wait(1);
let expected_tx = BITCOIND
.client
.get_transaction(&txid, None)
.unwrap()
.transaction()
.unwrap();
let script = &expected_tx.output[0].script_pubkey;
let scripthash_txs_txids: Vec<Txid> = blocking_client
.scripthash_txs(script, None)
.unwrap()
.iter()
.map(|tx| tx.txid)
.collect();
let scripthash_txs_txids_async: Vec<Txid> = async_client
.scripthash_txs(script, None)
.await
.unwrap()
.iter()
.map(|tx| tx.txid)
.collect();
assert_eq!(scripthash_txs_txids, scripthash_txs_txids_async);
}
#[cfg(all(feature = "blocking", any(feature = "async", feature = "async-https")))]
#[tokio::test]
async fn test_get_blocks() {
let (blocking_client, async_client) = setup_clients().await;
let start_height = BITCOIND.client.get_block_count().unwrap();
let blocks1 = blocking_client.get_blocks(None).unwrap();
let blocks_async1 = async_client.get_blocks(None).await.unwrap();
assert_eq!(blocks1[0].time.height, start_height as u32);
assert_eq!(blocks1, blocks_async1);
generate_blocks_and_wait(10);
let blocks2 = blocking_client.get_blocks(None).unwrap();
let blocks_async2 = async_client.get_blocks(None).await.unwrap();
assert_eq!(blocks2, blocks_async2);
assert_ne!(blocks2, blocks1);
let blocks3 = blocking_client
.get_blocks(Some(start_height as u32))
.unwrap();
let blocks_async3 = async_client
.get_blocks(Some(start_height as u32))
.await
.unwrap();
assert_eq!(blocks3, blocks_async3);
assert_eq!(blocks3[0].time.height, start_height as u32);
assert_eq!(blocks3, blocks1);
let blocks_genesis = blocking_client.get_blocks(Some(0)).unwrap();
let blocks_genesis_async = async_client.get_blocks(Some(0)).await.unwrap();
assert_eq!(blocks_genesis, blocks_genesis_async);
}
}