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 bitcoind_rpc_client = RpcClient::new(&rpc_credentials, http_endpoint)?;
71 let mut fees: HashMap<Target, AtomicU32> = HashMap::new();
72 fees.insert(Target::Background, AtomicU32::new(253));
73 fees.insert(Target::Normal, AtomicU32::new(2000));
74 fees.insert(Target::HighPriority, AtomicU32::new(5000));
76 bitcoind_rpc_client: Arc::new(Mutex::new(bitcoind_rpc_client)),
83 BitcoindClient::poll_for_fee_estimates(
85 client.bitcoind_rpc_client.clone(),
91 async fn poll_for_fee_estimates(
92 fees: Arc<HashMap<Target, AtomicU32>>, rpc_client: Arc<Mutex<RpcClient>>,
94 tokio::spawn(async move {
96 let background_estimate = {
97 let mut rpc = rpc_client.lock().await;
98 let background_conf_target = serde_json::json!(144);
99 let background_estimate_mode = serde_json::json!("ECONOMICAL");
101 .call_method::<FeeResponse>(
103 &vec![background_conf_target, background_estimate_mode],
112 // if background_estimate.
114 let normal_estimate = {
115 let mut rpc = rpc_client.lock().await;
116 let normal_conf_target = serde_json::json!(18);
117 let normal_estimate_mode = serde_json::json!("ECONOMICAL");
119 .call_method::<FeeResponse>(
121 &vec![normal_conf_target, normal_estimate_mode],
131 let high_prio_estimate = {
132 let mut rpc = rpc_client.lock().await;
133 let high_prio_conf_target = serde_json::json!(6);
134 let high_prio_estimate_mode = serde_json::json!("CONSERVATIVE");
136 .call_method::<FeeResponse>(
138 &vec![high_prio_conf_target, high_prio_estimate_mode],
149 fees.get(&Target::Background)
151 .store(background_estimate, Ordering::Release);
152 fees.get(&Target::Normal).unwrap().store(normal_estimate, Ordering::Release);
153 fees.get(&Target::HighPriority)
155 .store(high_prio_estimate, Ordering::Release);
156 tokio::time::sleep(Duration::from_secs(60)).await;
161 pub fn get_new_rpc_client(&self) -> std::io::Result<RpcClient> {
162 let http_endpoint = HttpEndpoint::for_host(self.host.clone()).with_port(self.port);
163 let rpc_credentials =
164 base64::encode(format!("{}:{}", self.rpc_user.clone(), self.rpc_password.clone()));
165 RpcClient::new(&rpc_credentials, http_endpoint)
168 pub async fn create_raw_transaction(&self, outputs: Vec<HashMap<String, f64>>) -> RawTx {
169 let mut rpc = self.bitcoind_rpc_client.lock().await;
171 let outputs_json = serde_json::json!(outputs);
172 rpc.call_method::<RawTx>("createrawtransaction", &vec![serde_json::json!([]), outputs_json])
177 pub async fn fund_raw_transaction(&self, raw_tx: RawTx) -> FundedTx {
178 let mut rpc = self.bitcoind_rpc_client.lock().await;
180 let raw_tx_json = serde_json::json!(raw_tx.0);
181 rpc.call_method("fundrawtransaction", &[raw_tx_json]).await.unwrap()
184 pub async fn send_raw_transaction(&self, raw_tx: RawTx) {
185 let mut rpc = self.bitcoind_rpc_client.lock().await;
187 let raw_tx_json = serde_json::json!(raw_tx.0);
188 rpc.call_method::<RawTx>("sendrawtransaction", &[raw_tx_json]).await.unwrap();
191 pub async fn sign_raw_transaction_with_wallet(&self, tx_hex: String) -> SignedTx {
192 let mut rpc = self.bitcoind_rpc_client.lock().await;
194 let tx_hex_json = serde_json::json!(tx_hex);
195 rpc.call_method("signrawtransactionwithwallet", &vec![tx_hex_json]).await.unwrap()
198 pub async fn get_new_address(&self) -> Address {
199 let mut rpc = self.bitcoind_rpc_client.lock().await;
201 let addr_args = vec![serde_json::json!("LDK output address")];
202 let addr = rpc.call_method::<NewAddress>("getnewaddress", &addr_args).await.unwrap();
203 Address::from_str(addr.0.as_str()).unwrap()
206 pub async fn get_blockchain_info(&self) -> BlockchainInfo {
207 let mut rpc = self.bitcoind_rpc_client.lock().await;
208 rpc.call_method::<BlockchainInfo>("getblockchaininfo", &vec![]).await.unwrap()
212 impl FeeEstimator for BitcoindClient {
213 fn get_est_sat_per_1000_weight(&self, confirmation_target: ConfirmationTarget) -> u32 {
214 match confirmation_target {
215 ConfirmationTarget::Background => {
216 self.fees.get(&Target::Background).unwrap().load(Ordering::Acquire)
218 ConfirmationTarget::Normal => {
219 self.fees.get(&Target::Normal).unwrap().load(Ordering::Acquire)
221 ConfirmationTarget::HighPriority => {
222 self.fees.get(&Target::HighPriority).unwrap().load(Ordering::Acquire)
228 impl BroadcasterInterface for BitcoindClient {
229 fn broadcast_transaction(&self, tx: &Transaction) {
230 let bitcoind_rpc_client = self.bitcoind_rpc_client.clone();
231 let tx_serialized = serde_json::json!(encode::serialize_hex(tx));
232 tokio::spawn(async move {
233 let mut rpc = bitcoind_rpc_client.lock().await;
234 rpc.call_method::<RawTx>("sendrawtransaction", &vec![tx_serialized]).await.unwrap();