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Merged
tnull merged 2 commits into from
Apr 26, 2023
Merged

Switch to async background processing and cleanup runtime handling. #68

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3cf6c8a
Switch to a future-based background processor
tnull Mar 24, 2023
944a8e2
Remove `Runtime` object and cleanup runtime handling
tnull Apr 21, 2023
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6 changes: 3 additions & 3 deletions Cargo.toml
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Original file line numberDiff line numberDiff line change
Expand Up@@ -13,23 +13,23 @@ lightning = { version = "0.0.115", features = ["max_level_trace", "std"] }
lightning-invoice = { version = "0.23" }
lightning-net-tokio = { version = "0.0.115" }
lightning-persister = { version = "0.0.115" }
lightning-background-processor = { version = "0.0.115" }
lightning-background-processor = { version = "0.0.115", features = ["futures"] }
lightning-rapid-gossip-sync = { version = "0.0.115" }
lightning-transaction-sync = { version = "0.0.115", features = ["esplora-async-https"] }

#lightning = { git = "https://github.com/lightningdevkit/rust-lightning", branch="main", features = ["max_level_trace", "std"] }
#lightning-invoice = { git = "https://github.com/lightningdevkit/rust-lightning", branch="main" }
#lightning-net-tokio = { git = "https://github.com/lightningdevkit/rust-lightning", branch="main" }
#lightning-persister = { git = "https://github.com/lightningdevkit/rust-lightning", branch="main" }
#lightning-background-processor = { git = "https://github.com/lightningdevkit/rust-lightning", branch="main" }
#lightning-background-processor = { git = "https://github.com/lightningdevkit/rust-lightning", branch="main", features = ["futures"] }
#lightning-rapid-gossip-sync = { git = "https://github.com/lightningdevkit/rust-lightning", branch="main" }
#lightning-transaction-sync = { git = "https://github.com/lightningdevkit/rust-lightning", branch="main", features = ["esplora-async"] }

#lightning = { path = "../rust-lightning/lightning", features = ["max_level_trace", "std"] }
#lightning-invoice = { path = "../rust-lightning/lightning-invoice" }
#lightning-net-tokio = { path = "../rust-lightning/lightning-net-tokio" }
#lightning-persister = { path = "../rust-lightning/lightning-persister" }
#lightning-background-processor = { path = "../rust-lightning/lightning-background-processor" }
#lightning-background-processor = { path = "../rust-lightning/lightning-background-processor", features = ["futures"] }
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tnull marked this conversation as resolved.
#lightning-rapid-gossip-sync = { path = "../rust-lightning/lightning-rapid-gossip-sync" }
#lightning-transaction-sync = { path = "../rust-lightning/lightning-transaction-sync", features = ["esplora-async"] }

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32 changes: 15 additions & 17 deletions src/event.rs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -11,7 +11,6 @@ use crate::logger::{log_error, log_info, Logger};

use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
use lightning::events::Event as LdkEvent;
use lightning::events::EventHandler as LdkEventHandler;
use lightning::events::PaymentPurpose;
use lightning::impl_writeable_tlv_based_enum;
use lightning::ln::PaymentHash;
Expand All@@ -24,7 +23,7 @@ use bitcoin::OutPoint;
use rand::{thread_rng, Rng};
use std::collections::VecDeque;
use std::ops::Deref;
use std::sync::{Arc, Condvar, Mutex};
use std::sync::{Arc, Condvar, Mutex, RwLock};
use std::time::Duration;

/// An event emitted by [`Node`], which should be handled by the user.
Expand DownExpand Up@@ -248,7 +247,7 @@ where
network_graph: Arc<NetworkGraph>,
keys_manager: Arc<KeysManager>,
payment_store: Arc<PaymentStore<K, L>>,
tokio_runtime: Arc<tokio::runtime::Runtime>,
runtime: Arc<RwLock<Option<tokio::runtime::Runtime>>>,
logger: L,
_config: Arc<Config>,
}
Expand All@@ -262,7 +261,7 @@ where
wallet: Arc<Wallet<bdk::database::SqliteDatabase>>, event_queue: Arc<EventQueue<K, L>>,
channel_manager: Arc<ChannelManager>, network_graph: Arc<NetworkGraph>,
keys_manager: Arc<KeysManager>, payment_store: Arc<PaymentStore<K, L>>,
tokio_runtime: Arc<tokio::runtime::Runtime>, logger: L, _config: Arc<Config>,
runtime: Arc<RwLock<Option<tokio::runtime::Runtime>>>, logger: L, _config: Arc<Config>,
) -> Self {
Self {
event_queue,
Expand All@@ -272,18 +271,12 @@ where
keys_manager,
payment_store,
logger,
tokio_runtime,
runtime,
_config,
}
}
}

impl<K: Deref + Clone, L: Deref> LdkEventHandler for EventHandler<K, L>
where
K::Target: KVStore,
L::Target: Logger,
{
fn handle_event(&self, event: LdkEvent) {
pub async fn handle_event(&self, event: LdkEvent) {
match event {
LdkEvent::FundingGenerationReady {
temporary_channel_id,
Expand DownExpand Up@@ -538,12 +531,17 @@ where
let forwarding_channel_manager = self.channel_manager.clone();
let min = time_forwardable.as_millis() as u64;

self.tokio_runtime.spawn(async move {
let millis_to_sleep = thread_rng().gen_range(min..min * 5) as u64;
tokio::time::sleep(Duration::from_millis(millis_to_sleep)).await;
let runtime_lock = self.runtime.read().unwrap();
debug_assert!(runtime_lock.is_some());

if let Some(runtime) = runtime_lock.as_ref() {
runtime.spawn(async move {
let millis_to_sleep = thread_rng().gen_range(min..min * 5) as u64;
tokio::time::sleep(Duration::from_millis(millis_to_sleep)).await;

forwarding_channel_manager.process_pending_htlc_forwards();
});
forwarding_channel_manager.process_pending_htlc_forwards();
});
}
}
LdkEvent::SpendableOutputs { outputs } => {
// TODO: We should eventually remember the outputs and supply them to the wallet's coin selection, once BDK allows us to do so.
Expand Down
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