1 use crate::convert::{BlockchainInfo, FeeResponse, FundedTx, NewAddress, RawTx, SignedTx};
3 use bitcoin::blockdata::block::Block;
4 use bitcoin::blockdata::transaction::Transaction;
5 use bitcoin::consensus::encode;
6 use bitcoin::hash_types::BlockHash;
7 use bitcoin::util::address::Address;
8 use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
9 use lightning_block_sync::http::HttpEndpoint;
10 use lightning_block_sync::rpc::RpcClient;
11 use lightning_block_sync::{AsyncBlockSourceResult, BlockHeaderData, BlockSource};
13 use std::collections::HashMap;
14 use std::str::FromStr;
15 use std::sync::atomic::{AtomicU32, Ordering};
17 use std::time::Duration;
18 use tokio::sync::Mutex;
20 pub struct BitcoindClient {
21 bitcoind_rpc_client: Arc<Mutex<RpcClient>>,
26 fees: Arc<HashMap<Target, AtomicU32>>,
29 #[derive(Clone, Eq, Hash, PartialEq)]
36 impl BlockSource for &BitcoindClient {
38 &'a mut self, header_hash: &'a BlockHash, height_hint: Option<u32>,
39 ) -> AsyncBlockSourceResult<'a, BlockHeaderData> {
41 let mut rpc = self.bitcoind_rpc_client.lock().await;
42 rpc.get_header(header_hash, height_hint).await
47 &'a mut self, header_hash: &'a BlockHash,
48 ) -> AsyncBlockSourceResult<'a, Block> {
50 let mut rpc = self.bitcoind_rpc_client.lock().await;
51 rpc.get_block(header_hash).await
55 fn get_best_block<'a>(&'a mut self) -> AsyncBlockSourceResult<(BlockHash, Option<u32>)> {
57 let mut rpc = self.bitcoind_rpc_client.lock().await;
58 rpc.get_best_block().await
65 host: String, port: u16, rpc_user: String, rpc_password: String,
66 ) -> std::io::Result<Self> {
67 let http_endpoint = HttpEndpoint::for_host(host.clone()).with_port(port);
69 base64::encode(format!("{}:{}", rpc_user.clone(), rpc_password.clone()));
70 let mut bitcoind_rpc_client = RpcClient::new(&rpc_credentials, http_endpoint)?;
71 let _dummy = bitcoind_rpc_client.call_method::<BlockchainInfo>("getblockchaininfo", &vec![]).await
72 .map_err(|_| std::io::Error::new(std::io::ErrorKind::PermissionDenied,
73 "Failed to make initial call to bitcoind - please check your RPC user/password and access settings"))?;
74 let mut fees: HashMap<Target, AtomicU32> = HashMap::new();
75 fees.insert(Target::Background, AtomicU32::new(253));
76 fees.insert(Target::Normal, AtomicU32::new(2000));
77 fees.insert(Target::HighPriority, AtomicU32::new(5000));
79 bitcoind_rpc_client: Arc::new(Mutex::new(bitcoind_rpc_client)),
86 BitcoindClient::poll_for_fee_estimates(
88 client.bitcoind_rpc_client.clone(),
94 async fn poll_for_fee_estimates(
95 fees: Arc<HashMap<Target, AtomicU32>>, rpc_client: Arc<Mutex<RpcClient>>,
97 tokio::spawn(async move {
99 let background_estimate = {
100 let mut rpc = rpc_client.lock().await;
101 let background_conf_target = serde_json::json!(144);
102 let background_estimate_mode = serde_json::json!("ECONOMICAL");
104 .call_method::<FeeResponse>(
106 &vec![background_conf_target, background_estimate_mode],
115 // if background_estimate.
117 let normal_estimate = {
118 let mut rpc = rpc_client.lock().await;
119 let normal_conf_target = serde_json::json!(18);
120 let normal_estimate_mode = serde_json::json!("ECONOMICAL");
122 .call_method::<FeeResponse>(
124 &vec![normal_conf_target, normal_estimate_mode],
134 let high_prio_estimate = {
135 let mut rpc = rpc_client.lock().await;
136 let high_prio_conf_target = serde_json::json!(6);
137 let high_prio_estimate_mode = serde_json::json!("CONSERVATIVE");
139 .call_method::<FeeResponse>(
141 &vec![high_prio_conf_target, high_prio_estimate_mode],
152 fees.get(&Target::Background)
154 .store(background_estimate, Ordering::Release);
155 fees.get(&Target::Normal).unwrap().store(normal_estimate, Ordering::Release);
156 fees.get(&Target::HighPriority)
158 .store(high_prio_estimate, Ordering::Release);
159 tokio::time::sleep(Duration::from_secs(60)).await;
164 pub fn get_new_rpc_client(&self) -> std::io::Result<RpcClient> {
165 let http_endpoint = HttpEndpoint::for_host(self.host.clone()).with_port(self.port);
166 let rpc_credentials =
167 base64::encode(format!("{}:{}", self.rpc_user.clone(), self.rpc_password.clone()));
168 RpcClient::new(&rpc_credentials, http_endpoint)
171 pub async fn create_raw_transaction(&self, outputs: Vec<HashMap<String, f64>>) -> RawTx {
172 let mut rpc = self.bitcoind_rpc_client.lock().await;
174 let outputs_json = serde_json::json!(outputs);
175 rpc.call_method::<RawTx>("createrawtransaction", &vec![serde_json::json!([]), outputs_json])
180 pub async fn fund_raw_transaction(&self, raw_tx: RawTx) -> FundedTx {
181 let mut rpc = self.bitcoind_rpc_client.lock().await;
183 let raw_tx_json = serde_json::json!(raw_tx.0);
184 rpc.call_method("fundrawtransaction", &[raw_tx_json]).await.unwrap()
187 pub async fn send_raw_transaction(&self, raw_tx: RawTx) {
188 let mut rpc = self.bitcoind_rpc_client.lock().await;
190 let raw_tx_json = serde_json::json!(raw_tx.0);
191 rpc.call_method::<RawTx>("sendrawtransaction", &[raw_tx_json]).await.unwrap();
194 pub async fn sign_raw_transaction_with_wallet(&self, tx_hex: String) -> SignedTx {
195 let mut rpc = self.bitcoind_rpc_client.lock().await;
197 let tx_hex_json = serde_json::json!(tx_hex);
198 rpc.call_method("signrawtransactionwithwallet", &vec![tx_hex_json]).await.unwrap()
201 pub async fn get_new_address(&self) -> Address {
202 let mut rpc = self.bitcoind_rpc_client.lock().await;
204 let addr_args = vec![serde_json::json!("LDK output address")];
205 let addr = rpc.call_method::<NewAddress>("getnewaddress", &addr_args).await.unwrap();
206 Address::from_str(addr.0.as_str()).unwrap()
209 pub async fn get_blockchain_info(&self) -> BlockchainInfo {
210 let mut rpc = self.bitcoind_rpc_client.lock().await;
211 rpc.call_method::<BlockchainInfo>("getblockchaininfo", &vec![]).await.unwrap()
215 impl FeeEstimator for BitcoindClient {
216 fn get_est_sat_per_1000_weight(&self, confirmation_target: ConfirmationTarget) -> u32 {
217 match confirmation_target {
218 ConfirmationTarget::Background => {
219 self.fees.get(&Target::Background).unwrap().load(Ordering::Acquire)
221 ConfirmationTarget::Normal => {
222 self.fees.get(&Target::Normal).unwrap().load(Ordering::Acquire)
224 ConfirmationTarget::HighPriority => {
225 self.fees.get(&Target::HighPriority).unwrap().load(Ordering::Acquire)
231 impl BroadcasterInterface for BitcoindClient {
232 fn broadcast_transaction(&self, tx: &Transaction) {
233 let bitcoind_rpc_client = self.bitcoind_rpc_client.clone();
234 let tx_serialized = serde_json::json!(encode::serialize_hex(tx));
235 tokio::spawn(async move {
236 let mut rpc = bitcoind_rpc_client.lock().await;
237 rpc.call_method::<RawTx>("sendrawtransaction", &vec![tx_serialized]).await.unwrap();