+use crate::convert::{BlockchainInfo, FeeResponse, FundedTx, NewAddress, RawTx, SignedTx};
use base64;
-use serde_json;
-
+use bitcoin::blockdata::block::Block;
use bitcoin::blockdata::transaction::Transaction;
use bitcoin::consensus::encode;
+use bitcoin::hash_types::BlockHash;
+use bitcoin::util::address::Address;
use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
use lightning_block_sync::http::HttpEndpoint;
use lightning_block_sync::rpc::RpcClient;
-
-use std::sync::Mutex;
+use lightning_block_sync::{AsyncBlockSourceResult, BlockHeaderData, BlockSource};
+use serde_json;
+use std::collections::HashMap;
+use std::str::FromStr;
+use std::sync::atomic::{AtomicU32, Ordering};
+use std::sync::Arc;
+use std::time::Duration;
+use tokio::sync::Mutex;
pub struct BitcoindClient {
- pub bitcoind_rpc_client: Mutex<RpcClient>,
+ bitcoind_rpc_client: Arc<Mutex<RpcClient>>,
+ host: String,
+ port: u16,
+ rpc_user: String,
+ rpc_password: String,
+ fees: Arc<HashMap<Target, AtomicU32>>,
+}
+
+#[derive(Clone, Eq, Hash, PartialEq)]
+pub enum Target {
+ Background,
+ Normal,
+ HighPriority,
+}
+
+impl BlockSource for &BitcoindClient {
+ fn get_header<'a>(
+ &'a mut self, header_hash: &'a BlockHash, height_hint: Option<u32>,
+ ) -> AsyncBlockSourceResult<'a, BlockHeaderData> {
+ Box::pin(async move {
+ let mut rpc = self.bitcoind_rpc_client.lock().await;
+ rpc.get_header(header_hash, height_hint).await
+ })
+ }
+
+ fn get_block<'a>(
+ &'a mut self, header_hash: &'a BlockHash,
+ ) -> AsyncBlockSourceResult<'a, Block> {
+ Box::pin(async move {
+ let mut rpc = self.bitcoind_rpc_client.lock().await;
+ rpc.get_block(header_hash).await
+ })
+ }
+
+ fn get_best_block<'a>(&'a mut self) -> AsyncBlockSourceResult<(BlockHash, Option<u32>)> {
+ Box::pin(async move {
+ let mut rpc = self.bitcoind_rpc_client.lock().await;
+ rpc.get_best_block().await
+ })
+ }
}
+/// The minimum feerate we are allowed to send, as specify by LDK.
+const MIN_FEERATE: u32 = 253;
+
impl BitcoindClient {
- pub fn new(host: String, port: u16, path: Option<String>, rpc_user: String, rpc_password: String) ->
- std::io::Result<Self>
- {
- let mut http_endpoint = HttpEndpoint::for_host(host).with_port(port);
- if let Some(p) = path {
- http_endpoint = http_endpoint.with_path(p);
- }
- let rpc_credentials = base64::encode(format!("{}:{}", rpc_user, rpc_password));
- let bitcoind_rpc_client = RpcClient::new(&rpc_credentials, http_endpoint)?;
- Ok(Self {
- bitcoind_rpc_client: Mutex::new(bitcoind_rpc_client)
- })
- }
+ pub async fn new(
+ host: String, port: u16, rpc_user: String, rpc_password: String,
+ ) -> std::io::Result<Self> {
+ let http_endpoint = HttpEndpoint::for_host(host.clone()).with_port(port);
+ let rpc_credentials =
+ base64::encode(format!("{}:{}", rpc_user.clone(), rpc_password.clone()));
+ let mut bitcoind_rpc_client = RpcClient::new(&rpc_credentials, http_endpoint)?;
+ let _dummy = bitcoind_rpc_client
+ .call_method::<BlockchainInfo>("getblockchaininfo", &vec![])
+ .await
+ .map_err(|_| {
+ std::io::Error::new(std::io::ErrorKind::PermissionDenied,
+ "Failed to make initial call to bitcoind - please check your RPC user/password and access settings")
+ })?;
+ let mut fees: HashMap<Target, AtomicU32> = HashMap::new();
+ fees.insert(Target::Background, AtomicU32::new(MIN_FEERATE));
+ fees.insert(Target::Normal, AtomicU32::new(2000));
+ fees.insert(Target::HighPriority, AtomicU32::new(5000));
+ let client = Self {
+ bitcoind_rpc_client: Arc::new(Mutex::new(bitcoind_rpc_client)),
+ host,
+ port,
+ rpc_user,
+ rpc_password,
+ fees: Arc::new(fees),
+ };
+ BitcoindClient::poll_for_fee_estimates(
+ client.fees.clone(),
+ client.bitcoind_rpc_client.clone(),
+ )
+ .await;
+ Ok(client)
+ }
+
+ async fn poll_for_fee_estimates(
+ fees: Arc<HashMap<Target, AtomicU32>>, rpc_client: Arc<Mutex<RpcClient>>,
+ ) {
+ tokio::spawn(async move {
+ loop {
+ let background_estimate = {
+ let mut rpc = rpc_client.lock().await;
+ let background_conf_target = serde_json::json!(144);
+ let background_estimate_mode = serde_json::json!("ECONOMICAL");
+ let resp = rpc
+ .call_method::<FeeResponse>(
+ "estimatesmartfee",
+ &vec![background_conf_target, background_estimate_mode],
+ )
+ .await
+ .unwrap();
+ match resp.feerate_sat_per_kw {
+ Some(feerate) => std::cmp::max(feerate, MIN_FEERATE),
+ None => MIN_FEERATE,
+ }
+ };
+
+ let normal_estimate = {
+ let mut rpc = rpc_client.lock().await;
+ let normal_conf_target = serde_json::json!(18);
+ let normal_estimate_mode = serde_json::json!("ECONOMICAL");
+ let resp = rpc
+ .call_method::<FeeResponse>(
+ "estimatesmartfee",
+ &vec![normal_conf_target, normal_estimate_mode],
+ )
+ .await
+ .unwrap();
+ match resp.feerate_sat_per_kw {
+ Some(feerate) => std::cmp::max(feerate, MIN_FEERATE),
+ None => 2000,
+ }
+ };
+
+ let high_prio_estimate = {
+ let mut rpc = rpc_client.lock().await;
+ let high_prio_conf_target = serde_json::json!(6);
+ let high_prio_estimate_mode = serde_json::json!("CONSERVATIVE");
+ let resp = rpc
+ .call_method::<FeeResponse>(
+ "estimatesmartfee",
+ &vec![high_prio_conf_target, high_prio_estimate_mode],
+ )
+ .await
+ .unwrap();
+
+ match resp.feerate_sat_per_kw {
+ Some(feerate) => std::cmp::max(feerate, MIN_FEERATE),
+ None => 5000,
+ }
+ };
+
+ fees.get(&Target::Background)
+ .unwrap()
+ .store(background_estimate, Ordering::Release);
+ fees.get(&Target::Normal).unwrap().store(normal_estimate, Ordering::Release);
+ fees.get(&Target::HighPriority)
+ .unwrap()
+ .store(high_prio_estimate, Ordering::Release);
+ tokio::time::sleep(Duration::from_secs(60)).await;
+ }
+ });
+ }
+
+ pub fn get_new_rpc_client(&self) -> std::io::Result<RpcClient> {
+ let http_endpoint = HttpEndpoint::for_host(self.host.clone()).with_port(self.port);
+ let rpc_credentials =
+ base64::encode(format!("{}:{}", self.rpc_user.clone(), self.rpc_password.clone()));
+ RpcClient::new(&rpc_credentials, http_endpoint)
+ }
+
+ pub async fn create_raw_transaction(&self, outputs: Vec<HashMap<String, f64>>) -> RawTx {
+ let mut rpc = self.bitcoind_rpc_client.lock().await;
+
+ let outputs_json = serde_json::json!(outputs);
+ rpc.call_method::<RawTx>("createrawtransaction", &vec![serde_json::json!([]), outputs_json])
+ .await
+ .unwrap()
+ }
+
+ pub async fn fund_raw_transaction(&self, raw_tx: RawTx) -> FundedTx {
+ let mut rpc = self.bitcoind_rpc_client.lock().await;
+
+ let raw_tx_json = serde_json::json!(raw_tx.0);
+ rpc.call_method("fundrawtransaction", &[raw_tx_json]).await.unwrap()
+ }
+
+ pub async fn send_raw_transaction(&self, raw_tx: RawTx) {
+ let mut rpc = self.bitcoind_rpc_client.lock().await;
+
+ let raw_tx_json = serde_json::json!(raw_tx.0);
+ rpc.call_method::<RawTx>("sendrawtransaction", &[raw_tx_json]).await.unwrap();
+ }
+
+ pub async fn sign_raw_transaction_with_wallet(&self, tx_hex: String) -> SignedTx {
+ let mut rpc = self.bitcoind_rpc_client.lock().await;
+
+ let tx_hex_json = serde_json::json!(tx_hex);
+ rpc.call_method("signrawtransactionwithwallet", &vec![tx_hex_json]).await.unwrap()
+ }
+
+ pub async fn get_new_address(&self) -> Address {
+ let mut rpc = self.bitcoind_rpc_client.lock().await;
+
+ let addr_args = vec![serde_json::json!("LDK output address")];
+ let addr = rpc.call_method::<NewAddress>("getnewaddress", &addr_args).await.unwrap();
+ Address::from_str(addr.0.as_str()).unwrap()
+ }
+
+ pub async fn get_blockchain_info(&self) -> BlockchainInfo {
+ let mut rpc = self.bitcoind_rpc_client.lock().await;
+ rpc.call_method::<BlockchainInfo>("getblockchaininfo", &vec![]).await.unwrap()
+ }
}
impl FeeEstimator for BitcoindClient {
- fn get_est_sat_per_1000_weight(&self, confirmation_target: ConfirmationTarget) -> u32 {
- let mut rpc_client_guard = self.bitcoind_rpc_client.lock().unwrap();
- match confirmation_target {
- ConfirmationTarget::Background => {
- let conf_target = serde_json::json!(144);
- let estimate_mode = serde_json::json!("ECONOMICAL");
- let resp = rpc_client_guard.call_method("estimatesmartfee",
- &vec![conf_target, estimate_mode]).unwrap();
- if !resp["errors"].is_null() && resp["errors"].as_array().unwrap().len() > 0 {
- return 253
- }
- resp["feerate"].as_u64().unwrap() as u32
- },
- ConfirmationTarget::Normal => {
- let conf_target = serde_json::json!(18);
- let estimate_mode = serde_json::json!("ECONOMICAL");
- let resp = rpc_client_guard.call_method("estimatesmartfee",
- &vec![conf_target, estimate_mode]).unwrap();
- if !resp["errors"].is_null() && resp["errors"].as_array().unwrap().len() > 0 {
- return 253
- }
- resp["feerate"].as_u64().unwrap() as u32
- },
- ConfirmationTarget::HighPriority => {
- let conf_target = serde_json::json!(6);
- let estimate_mode = serde_json::json!("CONSERVATIVE");
- let resp = rpc_client_guard.call_method("estimatesmartfee",
- &vec![conf_target, estimate_mode]).unwrap();
- if !resp["errors"].is_null() && resp["errors"].as_array().unwrap().len() > 0 {
- return 253
- }
- resp["feerate"].as_u64().unwrap() as u32
- },
- }
- }
+ fn get_est_sat_per_1000_weight(&self, confirmation_target: ConfirmationTarget) -> u32 {
+ match confirmation_target {
+ ConfirmationTarget::Background => {
+ self.fees.get(&Target::Background).unwrap().load(Ordering::Acquire)
+ }
+ ConfirmationTarget::Normal => {
+ self.fees.get(&Target::Normal).unwrap().load(Ordering::Acquire)
+ }
+ ConfirmationTarget::HighPriority => {
+ self.fees.get(&Target::HighPriority).unwrap().load(Ordering::Acquire)
+ }
+ }
+ }
}
impl BroadcasterInterface for BitcoindClient {
- fn broadcast_transaction(&self, tx: &Transaction) {
- let mut rpc_client_guard = self.bitcoind_rpc_client.lock().unwrap();
- let tx_serialized = serde_json::json!(encode::serialize_hex(tx));
- rpc_client_guard.call_method("sendrawtransaction", &vec![tx_serialized]).unwrap();
- }
+ fn broadcast_transaction(&self, tx: &Transaction) {
+ let bitcoind_rpc_client = self.bitcoind_rpc_client.clone();
+ let tx_serialized = serde_json::json!(encode::serialize_hex(tx));
+ tokio::spawn(async move {
+ let mut rpc = bitcoind_rpc_client.lock().await;
+ // This may error due to RL calling `broadcast_transaction` with the same transaction
+ // multiple times, but the error is safe to ignore.
+ match rpc.call_method::<RawTx>("sendrawtransaction", &vec![tx_serialized]).await {
+ Ok(_) => {}
+ Err(e) => {
+ let err_str = e.get_ref().unwrap().to_string();
+ if !err_str.contains("Transaction already in block chain")
+ && !err_str.contains("Inputs missing or spent")
+ && !err_str.contains("bad-txns-inputs-missingorspent")
+ && !err_str.contains("non-BIP68-final")
+ {
+ panic!("{}", e);
+ }
+ }
+ }
+ });
+ }
}
projects / ldk-sample / blobdiff