Always process ChannelMonitorUpdates asynchronously#1897

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Merged
TheBlueMatt merged 11 commits into from
Feb 22, 2023
Merged

Always process ChannelMonitorUpdates asynchronously #1897

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5be29c6
Fix the err msg provided when a send fails due to peer disconnected
TheBlueMatt Feb 1, 2023
8aa518f
Add an infallible no-sign version of send_commitment_no_status_check
TheBlueMatt Dec 1, 2022
56f979b
Track actions to execute after a `ChannelMonitor` is updated
TheBlueMatt Nov 30, 2022
34218cc
Add storage for `ChannelMonitorUpdate`s in `Channel`s
TheBlueMatt Dec 19, 2022
ba07622
Add a new monitor update result handling macro
TheBlueMatt Dec 3, 2022
9802afa
Handle `MonitorUpdateCompletionAction`s after monitor update sync
TheBlueMatt Jan 27, 2023
46c6fb7
Move TODO from `handle_monitor_update_res` into `Channel`
TheBlueMatt Dec 3, 2022
4e002dc
Always process `ChannelMonitorUpdate`s asynchronously
TheBlueMatt Jan 11, 2023
c35253d
Use new monitor persistence flow in funding_signed handling
TheBlueMatt Feb 6, 2023
685b08d
Use the new monitor persistence flow for `funding_created` handling
TheBlueMatt Dec 3, 2022
2adb8ee
Don't generate a `ChannelMonitorUpdate` for closed chans on shutdown
TheBlueMatt Feb 19, 2023
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2 changes: 1 addition & 1 deletion fuzz/src/chanmon_consistency.rs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -295,7 +295,7 @@ fn check_api_err(api_err: APIError) {
// all others. If you hit this panic, the list of acceptable errors
// is probably just stale and you should add new messages here.
match err.as_str() {
"Peer for first hop currently disconnected/pending monitor update!" => {},
"Peer for first hop currently disconnected" => {},
_ if err.starts_with("Cannot push more than their max accepted HTLCs ") => {},
_ if err.starts_with("Cannot send value that would put us over the max HTLC value in flight our peer will accept ") => {},
_ if err.starts_with("Cannot send value that would put our balance under counterparty-announced channel reserve value") => {},
Expand Down
20 changes: 17 additions & 3 deletions lightning/src/chain/chainmonitor.rs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -796,7 +796,7 @@ mod tests {
use crate::ln::functional_test_utils::*;
use crate::ln::msgs::ChannelMessageHandler;
use crate::util::errors::APIError;
use crate::util::events::{ClosureReason, MessageSendEvent, MessageSendEventsProvider};
use crate::util::events::{Event, ClosureReason, MessageSendEvent, MessageSendEventsProvider};

#[test]
fn test_async_ooo_offchain_updates() {
Expand All@@ -819,10 +819,8 @@ mod tests {

nodes[1].node.claim_funds(payment_preimage_1);
check_added_monitors!(nodes[1], 1);
expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
nodes[1].node.claim_funds(payment_preimage_2);
check_added_monitors!(nodes[1], 1);
expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);

let persistences = chanmon_cfgs[1].persister.offchain_monitor_updates.lock().unwrap().clone();
assert_eq!(persistences.len(), 1);
Expand DownExpand Up@@ -850,8 +848,24 @@ mod tests {
.find(|(txo, _)| txo == funding_txo).unwrap().1.contains(&next_update));
assert!(nodes[1].chain_monitor.release_pending_monitor_events().is_empty());
assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
nodes[1].chain_monitor.chain_monitor.channel_monitor_updated(*funding_txo, update_iter.next().unwrap().clone()).unwrap();

let claim_events = nodes[1].node.get_and_clear_pending_events();
assert_eq!(claim_events.len(), 2);
match claim_events[0] {
Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
assert_eq!(payment_hash_1, *payment_hash);
},
_ => panic!("Unexpected event"),
}
match claim_events[1] {
Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
assert_eq!(payment_hash_2, *payment_hash);
},
_ => panic!("Unexpected event"),
}

// Now manually walk the commitment signed dance - because we claimed two payments
// back-to-back it doesn't fit into the neat walk commitment_signed_dance does.

Expand Down
61 changes: 44 additions & 17 deletions lightning/src/ln/chanmon_update_fail_tests.rs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,7 +143,7 @@ fn test_monitor_and_persister_update_fail() {
let mut node_0_per_peer_lock;
let mut node_0_peer_state_lock;
let mut channel = get_channel_ref!(nodes[0], nodes[1], node_0_per_peer_lock, node_0_peer_state_lock, chan.2);
if let Ok((_, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
if let Ok(update) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
// Check that even though the persister is returning a InProgress,
// because the update is bogus, ultimately the error that's returned
// should be a PermanentFailure.
Expand DownExpand Up@@ -1602,7 +1602,6 @@ fn test_monitor_update_fail_claim() {

chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
nodes[1].node.claim_funds(payment_preimage_1);
expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
check_added_monitors!(nodes[1], 1);

Expand All@@ -1628,6 +1627,7 @@ fn test_monitor_update_fail_claim() {
let events = nodes[1].node.get_and_clear_pending_msg_events();
assert_eq!(events.len(), 0);
commitment_signed_dance!(nodes[1], nodes[2], payment_event.commitment_msg, false, true);
expect_pending_htlcs_forwardable_ignore!(nodes[1]);

let (_, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[0]);
nodes[2].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3), PaymentId(payment_hash_3.0)).unwrap();
Expand All@@ -1645,6 +1645,7 @@ fn test_monitor_update_fail_claim() {
let channel_id = chan_1.2;
let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
check_added_monitors!(nodes[1], 0);

let bs_fulfill_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
Expand All@@ -1653,7 +1654,7 @@ fn test_monitor_update_fail_claim() {
expect_payment_sent!(nodes[0], payment_preimage_1);

// Get the payment forwards, note that they were batched into one commitment update.
expect_pending_htlcs_forwardable!(nodes[1]);
nodes[1].node.process_pending_htlc_forwards();
check_added_monitors!(nodes[1], 1);
let bs_forward_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &bs_forward_update.update_add_htlcs[0]);
Expand DownExpand Up@@ -1739,7 +1740,6 @@ fn test_monitor_update_on_pending_forwards() {
chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::NextHopChannel { node_id: Some(nodes[2].node.get_our_node_id()), channel_id: chan_2.2 }]);
check_added_monitors!(nodes[1], 1);
assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_1.2).unwrap().clone();
Expand All@@ -1753,17 +1753,17 @@ fn test_monitor_update_on_pending_forwards() {

let events = nodes[0].node.get_and_clear_pending_events();
assert_eq!(events.len(), 3);
if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[0] {
if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[1] {
assert_eq!(payment_hash, payment_hash_1);
assert!(payment_failed_permanently);
} else { panic!("Unexpected event!"); }
match events[1] {
match events[2] {
Event::PaymentFailed { payment_hash, .. } => {
assert_eq!(payment_hash, payment_hash_1);
},
_ => panic!("Unexpected event"),
}
match events[2] {
match events[0] {
Event::PendingHTLCsForwardable { .. } => { },
_ => panic!("Unexpected event"),
};
Expand DownExpand Up@@ -1803,14 +1803,14 @@ fn monitor_update_claim_fail_no_response() {

chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
nodes[1].node.claim_funds(payment_preimage_1);
expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
check_added_monitors!(nodes[1], 1);

assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
check_added_monitors!(nodes[1], 0);
assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

Expand DownExpand Up@@ -2290,7 +2290,6 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
nodes[0].node.claim_funds(payment_preimage_0);
check_added_monitors!(nodes[0], 1);
expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send.msgs[0]);
nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send.commitment_msg);
Expand DownExpand Up@@ -2353,6 +2352,7 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
let (funding_txo, mon_id, _) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id).unwrap().clone();
nodes[0].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_txo, mon_id);
expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

// New outbound messages should be generated immediately upon a call to
// get_and_clear_pending_msg_events (but not before).
Expand DownExpand Up@@ -2606,7 +2606,15 @@ fn test_permanent_error_during_sending_shutdown() {
chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::PermanentFailure);

assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
check_closed_broadcast!(nodes[0], true);

// We always send the `shutdown` response when initiating a shutdown, even if we immediately
// close the channel thereafter.
let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
assert_eq!(msg_events.len(), 3);
if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

check_added_monitors!(nodes[0], 2);
check_closed_event!(nodes[0], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2629,7 +2637,15 @@ fn test_permanent_error_during_handling_shutdown() {
assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
let shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &shutdown);
check_closed_broadcast!(nodes[1], true);

// We always send the `shutdown` response when receiving a shutdown, even if we immediately
// close the channel thereafter.
let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
assert_eq!(msg_events.len(), 3);
if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

check_added_monitors!(nodes[1], 2);
check_closed_event!(nodes[1], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2651,15 +2667,13 @@ fn double_temp_error() {
// `claim_funds` results in a ChannelMonitorUpdate.
nodes[1].node.claim_funds(payment_preimage_1);
check_added_monitors!(nodes[1], 1);
expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
let (funding_tx, latest_update_1, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();

chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
// Previously, this would've panicked due to a double-call to `Channel::monitor_update_failed`,
// which had some asserts that prevented it from being called twice.
nodes[1].node.claim_funds(payment_preimage_2);
check_added_monitors!(nodes[1], 1);
expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);
chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);

let (_, latest_update_2, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
Expand All@@ -2668,11 +2682,24 @@ fn double_temp_error() {
check_added_monitors!(nodes[1], 0);
nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_tx, latest_update_2);

// Complete the first HTLC.
let events = nodes[1].node.get_and_clear_pending_msg_events();
assert_eq!(events.len(), 1);
// Complete the first HTLC. Note that as a side-effect we handle the monitor update completions
// and get both PaymentClaimed events at once.
let msg_events = nodes[1].node.get_and_clear_pending_msg_events();

let events = nodes[1].node.get_and_clear_pending_events();
assert_eq!(events.len(), 2);
match events[0] {
Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_1),
_ => panic!("Unexpected Event: {:?}", events[0]),
}
match events[1] {
Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_2),
_ => panic!("Unexpected Event: {:?}", events[1]),
}

assert_eq!(msg_events.len(), 1);
let (update_fulfill_1, commitment_signed_b1, node_id) = {
match &events[0] {
match &msg_events[0] {
&MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
assert!(update_add_htlcs.is_empty());
assert_eq!(update_fulfill_htlcs.len(), 1);
Expand Down
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Always process ChannelMonitorUpdates asynchronously#1897

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 Merged

TheBlueMatt
merged 11 commits into

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Feb 22, 2023
 Merged


Always process ChannelMonitorUpdates asynchronously
#1897
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5be29c6

Fix the err msg provided when a send fails due to peer disconnected


TheBlueMatt Feb 1, 2023
8aa518f

Add an infallible no-sign version of send_commitment_no_status_check


TheBlueMatt Dec 1, 2022
56f979b

Track actions to execute after a `ChannelMonitor` is updated


TheBlueMatt Nov 30, 2022
34218cc

Add storage for `ChannelMonitorUpdate`s in `Channel`s


TheBlueMatt Dec 19, 2022
ba07622

Add a new monitor update result handling macro


TheBlueMatt Dec 3, 2022
9802afa

Handle `MonitorUpdateCompletionAction`s after monitor update sync


TheBlueMatt Jan 27, 2023
46c6fb7

Move TODO from `handle_monitor_update_res` into `Channel`


TheBlueMatt Dec 3, 2022
4e002dc

Always process `ChannelMonitorUpdate`s asynchronously


TheBlueMatt Jan 11, 2023
c35253d

Use new monitor persistence flow in funding_signed handling


TheBlueMatt Feb 6, 2023
685b08d

Use the new monitor persistence flow for `funding_created` handling


TheBlueMatt Dec 3, 2022
2adb8ee

Don't generate a `ChannelMonitorUpdate` for closed chans on shutdown


TheBlueMatt Feb 19, 2023

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2 changes: 1 addition & 1 deletion
fuzz/src/chanmon_consistency.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -295,7 +295,7 @@ fn check_api_err(api_err: APIError) {
 // all others. If you hit this panic, the list of acceptable errors
 // is probably just stale and you should add new messages here.
 match err.as_str() {
 "Peer for first hop currently disconnected/pending monitor update!" => {},
 "Peer for first hop currently disconnected" => {},
 _ if err.starts_with("Cannot push more than their max accepted HTLCs ") => {},
 _ if err.starts_with("Cannot send value that would put us over the max HTLC value in flight our peer will accept ") => {},
 _ if err.starts_with("Cannot send value that would put our balance under counterparty-announced channel reserve value") => {},
Expand Down

20 changes: 17 additions & 3 deletions
lightning/src/chain/chainmonitor.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -796,7 +796,7 @@ mod tests {
	use crate::ln::functional_test_utils::*;
	use crate::ln::msgs::ChannelMessageHandler;
	use crate::util::errors::APIError;
	use crate::util::events::{ClosureReason, MessageSendEvent, MessageSendEventsProvider};
	use crate::util::events::{Event, ClosureReason, MessageSendEvent, MessageSendEventsProvider};

	#[test]
	fn test_async_ooo_offchain_updates() {
Expand All@@ -819,10 +819,8 @@ mod tests {

 nodes[1].node.claim_funds(payment_preimage_1);
 check_added_monitors!(nodes[1], 1);
 expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
 nodes[1].node.claim_funds(payment_preimage_2);
 check_added_monitors!(nodes[1], 1);
 expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);

 let persistences = chanmon_cfgs[1].persister.offchain_monitor_updates.lock().unwrap().clone();
 assert_eq!(persistences.len(), 1);
Expand DownExpand Up@@ -850,8 +848,24 @@ mod tests {
 .find(|(txo, _)| txo == funding_txo).unwrap().1.contains(&next_update));
 assert!(nodes[1].chain_monitor.release_pending_monitor_events().is_empty());
 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
 nodes[1].chain_monitor.chain_monitor.channel_monitor_updated(*funding_txo, update_iter.next().unwrap().clone()).unwrap();

 let claim_events = nodes[1].node.get_and_clear_pending_events();
 assert_eq!(claim_events.len(), 2);
 match claim_events[0] {
 Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
 assert_eq!(payment_hash_1, *payment_hash);
 },
 _ => panic!("Unexpected event"),
 }
 match claim_events[1] {
 Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
 assert_eq!(payment_hash_2, *payment_hash);
 },
 _ => panic!("Unexpected event"),
 }

 // Now manually walk the commitment signed dance - because we claimed two payments
 // back-to-back it doesn't fit into the neat walk commitment_signed_dance does.

Expand Down

61 changes: 44 additions & 17 deletions
lightning/src/ln/chanmon_update_fail_tests.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,7 +143,7 @@ fn test_monitor_and_persister_update_fail() {
 let mut node_0_per_peer_lock;
 let mut node_0_peer_state_lock;
 let mut channel = get_channel_ref!(nodes[0], nodes[1], node_0_per_peer_lock, node_0_peer_state_lock, chan.2);
 if let Ok((_, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
 if let Ok(update) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
 // Check that even though the persister is returning a InProgress,
 // because the update is bogus, ultimately the error that's returned
 // should be a PermanentFailure.
Expand DownExpand Up@@ -1602,7 +1602,6 @@ fn test_monitor_update_fail_claim() {

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[1].node.claim_funds(payment_preimage_1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
	check_added_monitors!(nodes[1], 1);

Expand All@@ -1628,6 +1627,7 @@ fn test_monitor_update_fail_claim() {
	let events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(events.len(), 0);
	commitment_signed_dance!(nodes[1], nodes[2], payment_event.commitment_msg, false, true);
	expect_pending_htlcs_forwardable_ignore!(nodes[1]);

	let (_, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[0]);
	nodes[2].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3), PaymentId(payment_hash_3.0)).unwrap();
Expand All@@ -1645,6 +1645,7 @@ fn test_monitor_update_fail_claim() {
	let channel_id = chan_1.2;
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 0);

	let bs_fulfill_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
Expand All@@ -1653,7 +1654,7 @@ fn test_monitor_update_fail_claim() {
	expect_payment_sent!(nodes[0], payment_preimage_1);

	// Get the payment forwards, note that they were batched into one commitment update.
expect_pending_htlcs_forwardable!(nodes[1]);
	nodes[1].node.process_pending_htlc_forwards();
	check_added_monitors!(nodes[1], 1);
	let bs_forward_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
	nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &bs_forward_update.update_add_htlcs[0]);
Expand DownExpand Up@@ -1739,7 +1740,6 @@ fn test_monitor_update_on_pending_forwards() {
	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::NextHopChannel { node_id: Some(nodes[2].node.get_our_node_id()), channel_id: chan_2.2 }]);
	check_added_monitors!(nodes[1], 1);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_1.2).unwrap().clone();
Expand All@@ -1753,17 +1753,17 @@ fn test_monitor_update_on_pending_forwards() {

	let events = nodes[0].node.get_and_clear_pending_events();
	assert_eq!(events.len(), 3);
	if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[0] {
	if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[1] {
 assert_eq!(payment_hash, payment_hash_1);
 assert!(payment_failed_permanently);
	} else { panic!("Unexpected event!"); }
	match events[1] {
	match events[2] {
 Event::PaymentFailed { payment_hash, .. } => {
 assert_eq!(payment_hash, payment_hash_1);
 },
 _ => panic!("Unexpected event"),
	}
	match events[2] {
	match events[0] {
 Event::PendingHTLCsForwardable { .. } => { },
 _ => panic!("Unexpected event"),
	};
Expand DownExpand Up@@ -1803,14 +1803,14 @@ fn monitor_update_claim_fail_no_response() {

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[1].node.claim_funds(payment_preimage_1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 1);

	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 0);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

Expand DownExpand Up@@ -2290,7 +2290,6 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[0].node.claim_funds(payment_preimage_0);
	check_added_monitors!(nodes[0], 1);
	expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

	nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send.msgs[0]);
	nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send.commitment_msg);
Expand DownExpand Up@@ -2353,6 +2352,7 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (funding_txo, mon_id, _) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id).unwrap().clone();
	nodes[0].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_txo, mon_id);
	expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

	// New outbound messages should be generated immediately upon a call to
	// get_and_clear_pending_msg_events (but not before).
Expand DownExpand Up@@ -2606,7 +2606,15 @@ fn test_permanent_error_during_sending_shutdown() {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::PermanentFailure);

	assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
	check_closed_broadcast!(nodes[0], true);

	// We always send the `shutdown` response when initiating a shutdown, even if we immediately
	// close the channel thereafter.
	let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
	assert_eq!(msg_events.len(), 3);
	if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
	if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
	if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

	check_added_monitors!(nodes[0], 2);
	check_closed_event!(nodes[0], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2629,7 +2637,15 @@ fn test_permanent_error_during_handling_shutdown() {
	assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
	let shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
	nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &shutdown);
	check_closed_broadcast!(nodes[1], true);

	// We always send the `shutdown` response when receiving a shutdown, even if we immediately
	// close the channel thereafter.
	let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(msg_events.len(), 3);
	if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
	if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
	if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

	check_added_monitors!(nodes[1], 2);
	check_closed_event!(nodes[1], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2651,15 +2667,13 @@ fn double_temp_error() {
	// `claim_funds` results in a ChannelMonitorUpdate.
	nodes[1].node.claim_funds(payment_preimage_1);
	check_added_monitors!(nodes[1], 1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	let (funding_tx, latest_update_1, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	// Previously, this would've panicked due to a double-call to `Channel::monitor_update_failed`,
	// which had some asserts that prevented it from being called twice.
	nodes[1].node.claim_funds(payment_preimage_2);
	check_added_monitors!(nodes[1], 1);
	expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);
	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);

	let (_, latest_update_2, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
Expand All@@ -2668,11 +2682,24 @@ fn double_temp_error() {
	check_added_monitors!(nodes[1], 0);
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_tx, latest_update_2);

	// Complete the first HTLC.
	let events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(events.len(), 1);
	// Complete the first HTLC. Note that as a side-effect we handle the monitor update completions
	// and get both PaymentClaimed events at once.
	let msg_events = nodes[1].node.get_and_clear_pending_msg_events();

	let events = nodes[1].node.get_and_clear_pending_events();
	assert_eq!(events.len(), 2);
	match events[0] {
 Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_1),
 _ => panic!("Unexpected Event: {:?}", events[0]),
	}
	match events[1] {
 Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_2),
 _ => panic!("Unexpected Event: {:?}", events[1]),
	}

	assert_eq!(msg_events.len(), 1);
	let (update_fulfill_1, commitment_signed_b1, node_id) = {
 match &events[0] {
 match &msg_events[0] {
 &MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
 assert!(update_add_htlcs.is_empty());
 assert_eq!(update_fulfill_htlcs.len(), 1);
Expand Down
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Always process ChannelMonitorUpdates asynchronously#1897

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 Merged

TheBlueMatt
merged 11 commits into

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Feb 22, 2023
 Merged


Always process ChannelMonitorUpdates asynchronously
#1897
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5be29c6

Fix the err msg provided when a send fails due to peer disconnected


TheBlueMatt Feb 1, 2023
8aa518f

Add an infallible no-sign version of send_commitment_no_status_check


TheBlueMatt Dec 1, 2022
56f979b

Track actions to execute after a `ChannelMonitor` is updated


TheBlueMatt Nov 30, 2022
34218cc

Add storage for `ChannelMonitorUpdate`s in `Channel`s


TheBlueMatt Dec 19, 2022
ba07622

Add a new monitor update result handling macro


TheBlueMatt Dec 3, 2022
9802afa

Handle `MonitorUpdateCompletionAction`s after monitor update sync


TheBlueMatt Jan 27, 2023
46c6fb7

Move TODO from `handle_monitor_update_res` into `Channel`


TheBlueMatt Dec 3, 2022
4e002dc

Always process `ChannelMonitorUpdate`s asynchronously


TheBlueMatt Jan 11, 2023
c35253d

Use new monitor persistence flow in funding_signed handling


TheBlueMatt Feb 6, 2023
685b08d

Use the new monitor persistence flow for `funding_created` handling


TheBlueMatt Dec 3, 2022
2adb8ee

Don't generate a `ChannelMonitorUpdate` for closed chans on shutdown


TheBlueMatt Feb 19, 2023

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2 changes: 1 addition & 1 deletion
fuzz/src/chanmon_consistency.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -295,7 +295,7 @@ fn check_api_err(api_err: APIError) {
 // all others. If you hit this panic, the list of acceptable errors
 // is probably just stale and you should add new messages here.
 match err.as_str() {
 "Peer for first hop currently disconnected/pending monitor update!" => {},
 "Peer for first hop currently disconnected" => {},
 _ if err.starts_with("Cannot push more than their max accepted HTLCs ") => {},
 _ if err.starts_with("Cannot send value that would put us over the max HTLC value in flight our peer will accept ") => {},
 _ if err.starts_with("Cannot send value that would put our balance under counterparty-announced channel reserve value") => {},
Expand Down

20 changes: 17 additions & 3 deletions
lightning/src/chain/chainmonitor.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -796,7 +796,7 @@ mod tests {
	use crate::ln::functional_test_utils::*;
	use crate::ln::msgs::ChannelMessageHandler;
	use crate::util::errors::APIError;
	use crate::util::events::{ClosureReason, MessageSendEvent, MessageSendEventsProvider};
	use crate::util::events::{Event, ClosureReason, MessageSendEvent, MessageSendEventsProvider};

	#[test]
	fn test_async_ooo_offchain_updates() {
Expand All@@ -819,10 +819,8 @@ mod tests {

 nodes[1].node.claim_funds(payment_preimage_1);
 check_added_monitors!(nodes[1], 1);
 expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
 nodes[1].node.claim_funds(payment_preimage_2);
 check_added_monitors!(nodes[1], 1);
 expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);

 let persistences = chanmon_cfgs[1].persister.offchain_monitor_updates.lock().unwrap().clone();
 assert_eq!(persistences.len(), 1);
Expand DownExpand Up@@ -850,8 +848,24 @@ mod tests {
 .find(|(txo, _)| txo == funding_txo).unwrap().1.contains(&next_update));
 assert!(nodes[1].chain_monitor.release_pending_monitor_events().is_empty());
 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
 nodes[1].chain_monitor.chain_monitor.channel_monitor_updated(*funding_txo, update_iter.next().unwrap().clone()).unwrap();

 let claim_events = nodes[1].node.get_and_clear_pending_events();
 assert_eq!(claim_events.len(), 2);
 match claim_events[0] {
 Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
 assert_eq!(payment_hash_1, *payment_hash);
 },
 _ => panic!("Unexpected event"),
 }
 match claim_events[1] {
 Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
 assert_eq!(payment_hash_2, *payment_hash);
 },
 _ => panic!("Unexpected event"),
 }

 // Now manually walk the commitment signed dance - because we claimed two payments
 // back-to-back it doesn't fit into the neat walk commitment_signed_dance does.

Expand Down

61 changes: 44 additions & 17 deletions
lightning/src/ln/chanmon_update_fail_tests.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,7 +143,7 @@ fn test_monitor_and_persister_update_fail() {
 let mut node_0_per_peer_lock;
 let mut node_0_peer_state_lock;
 let mut channel = get_channel_ref!(nodes[0], nodes[1], node_0_per_peer_lock, node_0_peer_state_lock, chan.2);
 if let Ok((_, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
 if let Ok(update) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
 // Check that even though the persister is returning a InProgress,
 // because the update is bogus, ultimately the error that's returned
 // should be a PermanentFailure.
Expand DownExpand Up@@ -1602,7 +1602,6 @@ fn test_monitor_update_fail_claim() {

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[1].node.claim_funds(payment_preimage_1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
	check_added_monitors!(nodes[1], 1);

Expand All@@ -1628,6 +1627,7 @@ fn test_monitor_update_fail_claim() {
	let events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(events.len(), 0);
	commitment_signed_dance!(nodes[1], nodes[2], payment_event.commitment_msg, false, true);
	expect_pending_htlcs_forwardable_ignore!(nodes[1]);

	let (_, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[0]);
	nodes[2].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3), PaymentId(payment_hash_3.0)).unwrap();
Expand All@@ -1645,6 +1645,7 @@ fn test_monitor_update_fail_claim() {
	let channel_id = chan_1.2;
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 0);

	let bs_fulfill_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
Expand All@@ -1653,7 +1654,7 @@ fn test_monitor_update_fail_claim() {
	expect_payment_sent!(nodes[0], payment_preimage_1);

	// Get the payment forwards, note that they were batched into one commitment update.
expect_pending_htlcs_forwardable!(nodes[1]);
	nodes[1].node.process_pending_htlc_forwards();
	check_added_monitors!(nodes[1], 1);
	let bs_forward_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
	nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &bs_forward_update.update_add_htlcs[0]);
Expand DownExpand Up@@ -1739,7 +1740,6 @@ fn test_monitor_update_on_pending_forwards() {
	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::NextHopChannel { node_id: Some(nodes[2].node.get_our_node_id()), channel_id: chan_2.2 }]);
	check_added_monitors!(nodes[1], 1);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_1.2).unwrap().clone();
Expand All@@ -1753,17 +1753,17 @@ fn test_monitor_update_on_pending_forwards() {

	let events = nodes[0].node.get_and_clear_pending_events();
	assert_eq!(events.len(), 3);
	if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[0] {
	if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[1] {
 assert_eq!(payment_hash, payment_hash_1);
 assert!(payment_failed_permanently);
	} else { panic!("Unexpected event!"); }
	match events[1] {
	match events[2] {
 Event::PaymentFailed { payment_hash, .. } => {
 assert_eq!(payment_hash, payment_hash_1);
 },
 _ => panic!("Unexpected event"),
	}
	match events[2] {
	match events[0] {
 Event::PendingHTLCsForwardable { .. } => { },
 _ => panic!("Unexpected event"),
	};
Expand DownExpand Up@@ -1803,14 +1803,14 @@ fn monitor_update_claim_fail_no_response() {

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[1].node.claim_funds(payment_preimage_1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 1);

	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 0);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

Expand DownExpand Up@@ -2290,7 +2290,6 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[0].node.claim_funds(payment_preimage_0);
	check_added_monitors!(nodes[0], 1);
	expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

	nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send.msgs[0]);
	nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send.commitment_msg);
Expand DownExpand Up@@ -2353,6 +2352,7 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (funding_txo, mon_id, _) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id).unwrap().clone();
	nodes[0].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_txo, mon_id);
	expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

	// New outbound messages should be generated immediately upon a call to
	// get_and_clear_pending_msg_events (but not before).
Expand DownExpand Up@@ -2606,7 +2606,15 @@ fn test_permanent_error_during_sending_shutdown() {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::PermanentFailure);

	assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
	check_closed_broadcast!(nodes[0], true);

	// We always send the `shutdown` response when initiating a shutdown, even if we immediately
	// close the channel thereafter.
	let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
	assert_eq!(msg_events.len(), 3);
	if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
	if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
	if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

	check_added_monitors!(nodes[0], 2);
	check_closed_event!(nodes[0], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2629,7 +2637,15 @@ fn test_permanent_error_during_handling_shutdown() {
	assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
	let shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
	nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &shutdown);
	check_closed_broadcast!(nodes[1], true);

	// We always send the `shutdown` response when receiving a shutdown, even if we immediately
	// close the channel thereafter.
	let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(msg_events.len(), 3);
	if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
	if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
	if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

	check_added_monitors!(nodes[1], 2);
	check_closed_event!(nodes[1], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2651,15 +2667,13 @@ fn double_temp_error() {
	// `claim_funds` results in a ChannelMonitorUpdate.
	nodes[1].node.claim_funds(payment_preimage_1);
	check_added_monitors!(nodes[1], 1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	let (funding_tx, latest_update_1, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	// Previously, this would've panicked due to a double-call to `Channel::monitor_update_failed`,
	// which had some asserts that prevented it from being called twice.
	nodes[1].node.claim_funds(payment_preimage_2);
	check_added_monitors!(nodes[1], 1);
	expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);
	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);

	let (_, latest_update_2, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
Expand All@@ -2668,11 +2682,24 @@ fn double_temp_error() {
	check_added_monitors!(nodes[1], 0);
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_tx, latest_update_2);

	// Complete the first HTLC.
	let events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(events.len(), 1);
	// Complete the first HTLC. Note that as a side-effect we handle the monitor update completions
	// and get both PaymentClaimed events at once.
	let msg_events = nodes[1].node.get_and_clear_pending_msg_events();

	let events = nodes[1].node.get_and_clear_pending_events();
	assert_eq!(events.len(), 2);
	match events[0] {
 Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_1),
 _ => panic!("Unexpected Event: {:?}", events[0]),
	}
	match events[1] {
 Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_2),
 _ => panic!("Unexpected Event: {:?}", events[1]),
	}

	assert_eq!(msg_events.len(), 1);
	let (update_fulfill_1, commitment_signed_b1, node_id) = {
 match &events[0] {
 match &msg_events[0] {
 &MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
 assert!(update_add_htlcs.is_empty());
 assert_eq!(update_fulfill_htlcs.len(), 1);
Expand Down
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injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Always process ChannelMonitorUpdates asynchronously#1897

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 Merged

TheBlueMatt
merged 11 commits into

from

Feb 22, 2023
 Merged


Always process ChannelMonitorUpdates asynchronously
#1897
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5be29c6

Fix the err msg provided when a send fails due to peer disconnected


TheBlueMatt Feb 1, 2023
8aa518f

Add an infallible no-sign version of send_commitment_no_status_check


TheBlueMatt Dec 1, 2022
56f979b

Track actions to execute after a `ChannelMonitor` is updated


TheBlueMatt Nov 30, 2022
34218cc

Add storage for `ChannelMonitorUpdate`s in `Channel`s


TheBlueMatt Dec 19, 2022
ba07622

Add a new monitor update result handling macro


TheBlueMatt Dec 3, 2022
9802afa

Handle `MonitorUpdateCompletionAction`s after monitor update sync


TheBlueMatt Jan 27, 2023
46c6fb7

Move TODO from `handle_monitor_update_res` into `Channel`


TheBlueMatt Dec 3, 2022
4e002dc

Always process `ChannelMonitorUpdate`s asynchronously


TheBlueMatt Jan 11, 2023
c35253d

Use new monitor persistence flow in funding_signed handling


TheBlueMatt Feb 6, 2023
685b08d

Use the new monitor persistence flow for `funding_created` handling


TheBlueMatt Dec 3, 2022
2adb8ee

Don't generate a `ChannelMonitorUpdate` for closed chans on shutdown


TheBlueMatt Feb 19, 2023

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2 changes: 1 addition & 1 deletion
fuzz/src/chanmon_consistency.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -295,7 +295,7 @@ fn check_api_err(api_err: APIError) {
 // all others. If you hit this panic, the list of acceptable errors
 // is probably just stale and you should add new messages here.
 match err.as_str() {
 "Peer for first hop currently disconnected/pending monitor update!" => {},
 "Peer for first hop currently disconnected" => {},
 _ if err.starts_with("Cannot push more than their max accepted HTLCs ") => {},
 _ if err.starts_with("Cannot send value that would put us over the max HTLC value in flight our peer will accept ") => {},
 _ if err.starts_with("Cannot send value that would put our balance under counterparty-announced channel reserve value") => {},
Expand Down

20 changes: 17 additions & 3 deletions
lightning/src/chain/chainmonitor.rs

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -796,7 +796,7 @@ mod tests {
	use crate::ln::functional_test_utils::*;
	use crate::ln::msgs::ChannelMessageHandler;
	use crate::util::errors::APIError;
	use crate::util::events::{ClosureReason, MessageSendEvent, MessageSendEventsProvider};
	use crate::util::events::{Event, ClosureReason, MessageSendEvent, MessageSendEventsProvider};

	#[test]
	fn test_async_ooo_offchain_updates() {
Expand All@@ -819,10 +819,8 @@ mod tests {

 nodes[1].node.claim_funds(payment_preimage_1);
 check_added_monitors!(nodes[1], 1);
 expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
 nodes[1].node.claim_funds(payment_preimage_2);
 check_added_monitors!(nodes[1], 1);
 expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);

 let persistences = chanmon_cfgs[1].persister.offchain_monitor_updates.lock().unwrap().clone();
 assert_eq!(persistences.len(), 1);
Expand DownExpand Up@@ -850,8 +848,24 @@ mod tests {
 .find(|(txo, _)| txo == funding_txo).unwrap().1.contains(&next_update));
 assert!(nodes[1].chain_monitor.release_pending_monitor_events().is_empty());
 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
 nodes[1].chain_monitor.chain_monitor.channel_monitor_updated(*funding_txo, update_iter.next().unwrap().clone()).unwrap();

 let claim_events = nodes[1].node.get_and_clear_pending_events();
 assert_eq!(claim_events.len(), 2);
 match claim_events[0] {
 Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
 assert_eq!(payment_hash_1, *payment_hash);
 },
 _ => panic!("Unexpected event"),
 }
 match claim_events[1] {
 Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
 assert_eq!(payment_hash_2, *payment_hash);
 },
 _ => panic!("Unexpected event"),
 }

 // Now manually walk the commitment signed dance - because we claimed two payments
 // back-to-back it doesn't fit into the neat walk commitment_signed_dance does.

Expand Down

61 changes: 44 additions & 17 deletions
lightning/src/ln/chanmon_update_fail_tests.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,7 +143,7 @@ fn test_monitor_and_persister_update_fail() {
 let mut node_0_per_peer_lock;
 let mut node_0_peer_state_lock;
 let mut channel = get_channel_ref!(nodes[0], nodes[1], node_0_per_peer_lock, node_0_peer_state_lock, chan.2);
 if let Ok((_, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
 if let Ok(update) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
 // Check that even though the persister is returning a InProgress,
 // because the update is bogus, ultimately the error that's returned
 // should be a PermanentFailure.
Expand DownExpand Up@@ -1602,7 +1602,6 @@ fn test_monitor_update_fail_claim() {

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[1].node.claim_funds(payment_preimage_1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
	check_added_monitors!(nodes[1], 1);

Expand All@@ -1628,6 +1627,7 @@ fn test_monitor_update_fail_claim() {
	let events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(events.len(), 0);
	commitment_signed_dance!(nodes[1], nodes[2], payment_event.commitment_msg, false, true);
	expect_pending_htlcs_forwardable_ignore!(nodes[1]);

	let (_, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[0]);
	nodes[2].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3), PaymentId(payment_hash_3.0)).unwrap();
Expand All@@ -1645,6 +1645,7 @@ fn test_monitor_update_fail_claim() {
	let channel_id = chan_1.2;
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 0);

	let bs_fulfill_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
Expand All@@ -1653,7 +1654,7 @@ fn test_monitor_update_fail_claim() {
	expect_payment_sent!(nodes[0], payment_preimage_1);

	// Get the payment forwards, note that they were batched into one commitment update.
expect_pending_htlcs_forwardable!(nodes[1]);
	nodes[1].node.process_pending_htlc_forwards();
	check_added_monitors!(nodes[1], 1);
	let bs_forward_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
	nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &bs_forward_update.update_add_htlcs[0]);
Expand DownExpand Up@@ -1739,7 +1740,6 @@ fn test_monitor_update_on_pending_forwards() {
	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::NextHopChannel { node_id: Some(nodes[2].node.get_our_node_id()), channel_id: chan_2.2 }]);
	check_added_monitors!(nodes[1], 1);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_1.2).unwrap().clone();
Expand All@@ -1753,17 +1753,17 @@ fn test_monitor_update_on_pending_forwards() {

	let events = nodes[0].node.get_and_clear_pending_events();
	assert_eq!(events.len(), 3);
	if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[0] {
	if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[1] {
 assert_eq!(payment_hash, payment_hash_1);
 assert!(payment_failed_permanently);
	} else { panic!("Unexpected event!"); }
	match events[1] {
	match events[2] {
 Event::PaymentFailed { payment_hash, .. } => {
 assert_eq!(payment_hash, payment_hash_1);
 },
 _ => panic!("Unexpected event"),
	}
	match events[2] {
	match events[0] {
 Event::PendingHTLCsForwardable { .. } => { },
 _ => panic!("Unexpected event"),
	};
Expand DownExpand Up@@ -1803,14 +1803,14 @@ fn monitor_update_claim_fail_no_response() {

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[1].node.claim_funds(payment_preimage_1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 1);

	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 0);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

Expand DownExpand Up@@ -2290,7 +2290,6 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[0].node.claim_funds(payment_preimage_0);
	check_added_monitors!(nodes[0], 1);
	expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

	nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send.msgs[0]);
	nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send.commitment_msg);
Expand DownExpand Up@@ -2353,6 +2352,7 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (funding_txo, mon_id, _) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id).unwrap().clone();
	nodes[0].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_txo, mon_id);
	expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

	// New outbound messages should be generated immediately upon a call to
	// get_and_clear_pending_msg_events (but not before).
Expand DownExpand Up@@ -2606,7 +2606,15 @@ fn test_permanent_error_during_sending_shutdown() {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::PermanentFailure);

	assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
	check_closed_broadcast!(nodes[0], true);

	// We always send the `shutdown` response when initiating a shutdown, even if we immediately
	// close the channel thereafter.
	let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
	assert_eq!(msg_events.len(), 3);
	if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
	if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
	if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

	check_added_monitors!(nodes[0], 2);
	check_closed_event!(nodes[0], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2629,7 +2637,15 @@ fn test_permanent_error_during_handling_shutdown() {
	assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
	let shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
	nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &shutdown);
	check_closed_broadcast!(nodes[1], true);

	// We always send the `shutdown` response when receiving a shutdown, even if we immediately
	// close the channel thereafter.
	let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(msg_events.len(), 3);
	if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
	if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
	if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

	check_added_monitors!(nodes[1], 2);
	check_closed_event!(nodes[1], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2651,15 +2667,13 @@ fn double_temp_error() {
	// `claim_funds` results in a ChannelMonitorUpdate.
	nodes[1].node.claim_funds(payment_preimage_1);
	check_added_monitors!(nodes[1], 1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	let (funding_tx, latest_update_1, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	// Previously, this would've panicked due to a double-call to `Channel::monitor_update_failed`,
	// which had some asserts that prevented it from being called twice.
	nodes[1].node.claim_funds(payment_preimage_2);
	check_added_monitors!(nodes[1], 1);
	expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);
	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);

	let (_, latest_update_2, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
Expand All@@ -2668,11 +2682,24 @@ fn double_temp_error() {
	check_added_monitors!(nodes[1], 0);
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_tx, latest_update_2);

	// Complete the first HTLC.
	let events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(events.len(), 1);
	// Complete the first HTLC. Note that as a side-effect we handle the monitor update completions
	// and get both PaymentClaimed events at once.
	let msg_events = nodes[1].node.get_and_clear_pending_msg_events();

	let events = nodes[1].node.get_and_clear_pending_events();
	assert_eq!(events.len(), 2);
	match events[0] {
 Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_1),
 _ => panic!("Unexpected Event: {:?}", events[0]),
	}
	match events[1] {
 Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_2),
 _ => panic!("Unexpected Event: {:?}", events[1]),
	}

	assert_eq!(msg_events.len(), 1);
	let (update_fulfill_1, commitment_signed_b1, node_id) = {
 match &events[0] {
 match &msg_events[0] {
 &MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
 assert!(update_add_htlcs.is_empty());
 assert_eq!(update_fulfill_htlcs.len(), 1);
Expand Down
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
Always process ChannelMonitorUpdates asynchronously#1897

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 Merged

TheBlueMatt
merged 11 commits into

from

Feb 22, 2023
 Merged


Always process ChannelMonitorUpdates asynchronously
#1897
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11 commits


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5be29c6

Fix the err msg provided when a send fails due to peer disconnected


TheBlueMatt Feb 1, 2023
8aa518f

Add an infallible no-sign version of send_commitment_no_status_check


TheBlueMatt Dec 1, 2022
56f979b

Track actions to execute after a `ChannelMonitor` is updated


TheBlueMatt Nov 30, 2022
34218cc

Add storage for `ChannelMonitorUpdate`s in `Channel`s


TheBlueMatt Dec 19, 2022
ba07622

Add a new monitor update result handling macro


TheBlueMatt Dec 3, 2022
9802afa

Handle `MonitorUpdateCompletionAction`s after monitor update sync


TheBlueMatt Jan 27, 2023
46c6fb7

Move TODO from `handle_monitor_update_res` into `Channel`


TheBlueMatt Dec 3, 2022
4e002dc

Always process `ChannelMonitorUpdate`s asynchronously


TheBlueMatt Jan 11, 2023
c35253d

Use new monitor persistence flow in funding_signed handling


TheBlueMatt Feb 6, 2023
685b08d

Use the new monitor persistence flow for `funding_created` handling


TheBlueMatt Dec 3, 2022
2adb8ee

Don't generate a `ChannelMonitorUpdate` for closed chans on shutdown


TheBlueMatt Feb 19, 2023

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2 changes: 1 addition & 1 deletion
fuzz/src/chanmon_consistency.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -295,7 +295,7 @@ fn check_api_err(api_err: APIError) {
 // all others. If you hit this panic, the list of acceptable errors
 // is probably just stale and you should add new messages here.
 match err.as_str() {
 "Peer for first hop currently disconnected/pending monitor update!" => {},
 "Peer for first hop currently disconnected" => {},
 _ if err.starts_with("Cannot push more than their max accepted HTLCs ") => {},
 _ if err.starts_with("Cannot send value that would put us over the max HTLC value in flight our peer will accept ") => {},
 _ if err.starts_with("Cannot send value that would put our balance under counterparty-announced channel reserve value") => {},
Expand Down

20 changes: 17 additions & 3 deletions
lightning/src/chain/chainmonitor.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -796,7 +796,7 @@ mod tests {
	use crate::ln::functional_test_utils::*;
	use crate::ln::msgs::ChannelMessageHandler;
	use crate::util::errors::APIError;
	use crate::util::events::{ClosureReason, MessageSendEvent, MessageSendEventsProvider};
	use crate::util::events::{Event, ClosureReason, MessageSendEvent, MessageSendEventsProvider};

	#[test]
	fn test_async_ooo_offchain_updates() {
Expand All@@ -819,10 +819,8 @@ mod tests {

 nodes[1].node.claim_funds(payment_preimage_1);
 check_added_monitors!(nodes[1], 1);
 expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
 nodes[1].node.claim_funds(payment_preimage_2);
 check_added_monitors!(nodes[1], 1);
 expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);

 let persistences = chanmon_cfgs[1].persister.offchain_monitor_updates.lock().unwrap().clone();
 assert_eq!(persistences.len(), 1);
Expand DownExpand Up@@ -850,8 +848,24 @@ mod tests {
 .find(|(txo, _)| txo == funding_txo).unwrap().1.contains(&next_update));
 assert!(nodes[1].chain_monitor.release_pending_monitor_events().is_empty());
 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
 nodes[1].chain_monitor.chain_monitor.channel_monitor_updated(*funding_txo, update_iter.next().unwrap().clone()).unwrap();

 let claim_events = nodes[1].node.get_and_clear_pending_events();
 assert_eq!(claim_events.len(), 2);
 match claim_events[0] {
 Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
 assert_eq!(payment_hash_1, *payment_hash);
 },
 _ => panic!("Unexpected event"),
 }
 match claim_events[1] {
 Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
 assert_eq!(payment_hash_2, *payment_hash);
 },
 _ => panic!("Unexpected event"),
 }

 // Now manually walk the commitment signed dance - because we claimed two payments
 // back-to-back it doesn't fit into the neat walk commitment_signed_dance does.

Expand Down

61 changes: 44 additions & 17 deletions
lightning/src/ln/chanmon_update_fail_tests.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,7 +143,7 @@ fn test_monitor_and_persister_update_fail() {
 let mut node_0_per_peer_lock;
 let mut node_0_peer_state_lock;
 let mut channel = get_channel_ref!(nodes[0], nodes[1], node_0_per_peer_lock, node_0_peer_state_lock, chan.2);
 if let Ok((_, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
 if let Ok(update) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
 // Check that even though the persister is returning a InProgress,
 // because the update is bogus, ultimately the error that's returned
 // should be a PermanentFailure.
Expand DownExpand Up@@ -1602,7 +1602,6 @@ fn test_monitor_update_fail_claim() {

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[1].node.claim_funds(payment_preimage_1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
	check_added_monitors!(nodes[1], 1);

Expand All@@ -1628,6 +1627,7 @@ fn test_monitor_update_fail_claim() {
	let events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(events.len(), 0);
	commitment_signed_dance!(nodes[1], nodes[2], payment_event.commitment_msg, false, true);
	expect_pending_htlcs_forwardable_ignore!(nodes[1]);

	let (_, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[0]);
	nodes[2].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3), PaymentId(payment_hash_3.0)).unwrap();
Expand All@@ -1645,6 +1645,7 @@ fn test_monitor_update_fail_claim() {
	let channel_id = chan_1.2;
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 0);

	let bs_fulfill_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
Expand All@@ -1653,7 +1654,7 @@ fn test_monitor_update_fail_claim() {
	expect_payment_sent!(nodes[0], payment_preimage_1);

	// Get the payment forwards, note that they were batched into one commitment update.
expect_pending_htlcs_forwardable!(nodes[1]);
	nodes[1].node.process_pending_htlc_forwards();
	check_added_monitors!(nodes[1], 1);
	let bs_forward_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
	nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &bs_forward_update.update_add_htlcs[0]);
Expand DownExpand Up@@ -1739,7 +1740,6 @@ fn test_monitor_update_on_pending_forwards() {
	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::NextHopChannel { node_id: Some(nodes[2].node.get_our_node_id()), channel_id: chan_2.2 }]);
	check_added_monitors!(nodes[1], 1);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_1.2).unwrap().clone();
Expand All@@ -1753,17 +1753,17 @@ fn test_monitor_update_on_pending_forwards() {

	let events = nodes[0].node.get_and_clear_pending_events();
	assert_eq!(events.len(), 3);
	if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[0] {
	if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[1] {
 assert_eq!(payment_hash, payment_hash_1);
 assert!(payment_failed_permanently);
	} else { panic!("Unexpected event!"); }
	match events[1] {
	match events[2] {
 Event::PaymentFailed { payment_hash, .. } => {
 assert_eq!(payment_hash, payment_hash_1);
 },
 _ => panic!("Unexpected event"),
	}
	match events[2] {
	match events[0] {
 Event::PendingHTLCsForwardable { .. } => { },
 _ => panic!("Unexpected event"),
	};
Expand DownExpand Up@@ -1803,14 +1803,14 @@ fn monitor_update_claim_fail_no_response() {

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[1].node.claim_funds(payment_preimage_1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 1);

	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 0);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

Expand DownExpand Up@@ -2290,7 +2290,6 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[0].node.claim_funds(payment_preimage_0);
	check_added_monitors!(nodes[0], 1);
	expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

	nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send.msgs[0]);
	nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send.commitment_msg);
Expand DownExpand Up@@ -2353,6 +2352,7 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (funding_txo, mon_id, _) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id).unwrap().clone();
	nodes[0].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_txo, mon_id);
	expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

	// New outbound messages should be generated immediately upon a call to
	// get_and_clear_pending_msg_events (but not before).
Expand DownExpand Up@@ -2606,7 +2606,15 @@ fn test_permanent_error_during_sending_shutdown() {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::PermanentFailure);

	assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
	check_closed_broadcast!(nodes[0], true);

	// We always send the `shutdown` response when initiating a shutdown, even if we immediately
	// close the channel thereafter.
	let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
	assert_eq!(msg_events.len(), 3);
	if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
	if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
	if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

	check_added_monitors!(nodes[0], 2);
	check_closed_event!(nodes[0], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2629,7 +2637,15 @@ fn test_permanent_error_during_handling_shutdown() {
	assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
	let shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
	nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &shutdown);
	check_closed_broadcast!(nodes[1], true);

	// We always send the `shutdown` response when receiving a shutdown, even if we immediately
	// close the channel thereafter.
	let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(msg_events.len(), 3);
	if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
	if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
	if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

	check_added_monitors!(nodes[1], 2);
	check_closed_event!(nodes[1], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2651,15 +2667,13 @@ fn double_temp_error() {
	// `claim_funds` results in a ChannelMonitorUpdate.
	nodes[1].node.claim_funds(payment_preimage_1);
	check_added_monitors!(nodes[1], 1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	let (funding_tx, latest_update_1, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	// Previously, this would've panicked due to a double-call to `Channel::monitor_update_failed`,
	// which had some asserts that prevented it from being called twice.
	nodes[1].node.claim_funds(payment_preimage_2);
	check_added_monitors!(nodes[1], 1);
	expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);
	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);

	let (_, latest_update_2, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
Expand All@@ -2668,11 +2682,24 @@ fn double_temp_error() {
	check_added_monitors!(nodes[1], 0);
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_tx, latest_update_2);

	// Complete the first HTLC.
	let events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(events.len(), 1);
	// Complete the first HTLC. Note that as a side-effect we handle the monitor update completions
	// and get both PaymentClaimed events at once.
	let msg_events = nodes[1].node.get_and_clear_pending_msg_events();

	let events = nodes[1].node.get_and_clear_pending_events();
	assert_eq!(events.len(), 2);
	match events[0] {
 Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_1),
 _ => panic!("Unexpected Event: {:?}", events[0]),
	}
	match events[1] {
 Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_2),
 _ => panic!("Unexpected Event: {:?}", events[1]),
	}

	assert_eq!(msg_events.len(), 1);
	let (update_fulfill_1, commitment_signed_b1, node_id) = {
 match &events[0] {
 match &msg_events[0] {
 &MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
 assert!(update_add_htlcs.is_empty());
 assert_eq!(update_fulfill_htlcs.len(), 1);
Expand Down
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if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
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} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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 Merged

TheBlueMatt
merged 11 commits into

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Feb 22, 2023
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Always process ChannelMonitorUpdates asynchronously
#1897
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5be29c6

Fix the err msg provided when a send fails due to peer disconnected


TheBlueMatt Feb 1, 2023
8aa518f

Add an infallible no-sign version of send_commitment_no_status_check


TheBlueMatt Dec 1, 2022
56f979b

Track actions to execute after a `ChannelMonitor` is updated


TheBlueMatt Nov 30, 2022
34218cc

Add storage for `ChannelMonitorUpdate`s in `Channel`s


TheBlueMatt Dec 19, 2022
ba07622

Add a new monitor update result handling macro


TheBlueMatt Dec 3, 2022
9802afa

Handle `MonitorUpdateCompletionAction`s after monitor update sync


TheBlueMatt Jan 27, 2023
46c6fb7

Move TODO from `handle_monitor_update_res` into `Channel`


TheBlueMatt Dec 3, 2022
4e002dc

Always process `ChannelMonitorUpdate`s asynchronously


TheBlueMatt Jan 11, 2023
c35253d

Use new monitor persistence flow in funding_signed handling


TheBlueMatt Feb 6, 2023
685b08d

Use the new monitor persistence flow for `funding_created` handling


TheBlueMatt Dec 3, 2022
2adb8ee

Don't generate a `ChannelMonitorUpdate` for closed chans on shutdown


TheBlueMatt Feb 19, 2023

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2 changes: 1 addition & 1 deletion
fuzz/src/chanmon_consistency.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -295,7 +295,7 @@ fn check_api_err(api_err: APIError) {
 // all others. If you hit this panic, the list of acceptable errors
 // is probably just stale and you should add new messages here.
 match err.as_str() {
 "Peer for first hop currently disconnected/pending monitor update!" => {},
 "Peer for first hop currently disconnected" => {},
 _ if err.starts_with("Cannot push more than their max accepted HTLCs ") => {},
 _ if err.starts_with("Cannot send value that would put us over the max HTLC value in flight our peer will accept ") => {},
 _ if err.starts_with("Cannot send value that would put our balance under counterparty-announced channel reserve value") => {},
Expand Down

20 changes: 17 additions & 3 deletions
lightning/src/chain/chainmonitor.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -796,7 +796,7 @@ mod tests {
	use crate::ln::functional_test_utils::*;
	use crate::ln::msgs::ChannelMessageHandler;
	use crate::util::errors::APIError;
	use crate::util::events::{ClosureReason, MessageSendEvent, MessageSendEventsProvider};
	use crate::util::events::{Event, ClosureReason, MessageSendEvent, MessageSendEventsProvider};

	#[test]
	fn test_async_ooo_offchain_updates() {
Expand All@@ -819,10 +819,8 @@ mod tests {

 nodes[1].node.claim_funds(payment_preimage_1);
 check_added_monitors!(nodes[1], 1);
 expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
 nodes[1].node.claim_funds(payment_preimage_2);
 check_added_monitors!(nodes[1], 1);
 expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);

 let persistences = chanmon_cfgs[1].persister.offchain_monitor_updates.lock().unwrap().clone();
 assert_eq!(persistences.len(), 1);
Expand DownExpand Up@@ -850,8 +848,24 @@ mod tests {
 .find(|(txo, _)| txo == funding_txo).unwrap().1.contains(&next_update));
 assert!(nodes[1].chain_monitor.release_pending_monitor_events().is_empty());
 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
 nodes[1].chain_monitor.chain_monitor.channel_monitor_updated(*funding_txo, update_iter.next().unwrap().clone()).unwrap();

 let claim_events = nodes[1].node.get_and_clear_pending_events();
 assert_eq!(claim_events.len(), 2);
 match claim_events[0] {
 Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
 assert_eq!(payment_hash_1, *payment_hash);
 },
 _ => panic!("Unexpected event"),
 }
 match claim_events[1] {
 Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
 assert_eq!(payment_hash_2, *payment_hash);
 },
 _ => panic!("Unexpected event"),
 }

 // Now manually walk the commitment signed dance - because we claimed two payments
 // back-to-back it doesn't fit into the neat walk commitment_signed_dance does.

Expand Down

61 changes: 44 additions & 17 deletions
lightning/src/ln/chanmon_update_fail_tests.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,7 +143,7 @@ fn test_monitor_and_persister_update_fail() {
 let mut node_0_per_peer_lock;
 let mut node_0_peer_state_lock;
 let mut channel = get_channel_ref!(nodes[0], nodes[1], node_0_per_peer_lock, node_0_peer_state_lock, chan.2);
 if let Ok((_, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
 if let Ok(update) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
 // Check that even though the persister is returning a InProgress,
 // because the update is bogus, ultimately the error that's returned
 // should be a PermanentFailure.
Expand DownExpand Up@@ -1602,7 +1602,6 @@ fn test_monitor_update_fail_claim() {

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[1].node.claim_funds(payment_preimage_1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
	check_added_monitors!(nodes[1], 1);

Expand All@@ -1628,6 +1627,7 @@ fn test_monitor_update_fail_claim() {
	let events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(events.len(), 0);
	commitment_signed_dance!(nodes[1], nodes[2], payment_event.commitment_msg, false, true);
	expect_pending_htlcs_forwardable_ignore!(nodes[1]);

	let (_, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[0]);
	nodes[2].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3), PaymentId(payment_hash_3.0)).unwrap();
Expand All@@ -1645,6 +1645,7 @@ fn test_monitor_update_fail_claim() {
	let channel_id = chan_1.2;
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 0);

	let bs_fulfill_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
Expand All@@ -1653,7 +1654,7 @@ fn test_monitor_update_fail_claim() {
	expect_payment_sent!(nodes[0], payment_preimage_1);

	// Get the payment forwards, note that they were batched into one commitment update.
expect_pending_htlcs_forwardable!(nodes[1]);
	nodes[1].node.process_pending_htlc_forwards();
	check_added_monitors!(nodes[1], 1);
	let bs_forward_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
	nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &bs_forward_update.update_add_htlcs[0]);
Expand DownExpand Up@@ -1739,7 +1740,6 @@ fn test_monitor_update_on_pending_forwards() {
	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::NextHopChannel { node_id: Some(nodes[2].node.get_our_node_id()), channel_id: chan_2.2 }]);
	check_added_monitors!(nodes[1], 1);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_1.2).unwrap().clone();
Expand All@@ -1753,17 +1753,17 @@ fn test_monitor_update_on_pending_forwards() {

	let events = nodes[0].node.get_and_clear_pending_events();
	assert_eq!(events.len(), 3);
	if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[0] {
	if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[1] {
 assert_eq!(payment_hash, payment_hash_1);
 assert!(payment_failed_permanently);
	} else { panic!("Unexpected event!"); }
	match events[1] {
	match events[2] {
 Event::PaymentFailed { payment_hash, .. } => {
 assert_eq!(payment_hash, payment_hash_1);
 },
 _ => panic!("Unexpected event"),
	}
	match events[2] {
	match events[0] {
 Event::PendingHTLCsForwardable { .. } => { },
 _ => panic!("Unexpected event"),
	};
Expand DownExpand Up@@ -1803,14 +1803,14 @@ fn monitor_update_claim_fail_no_response() {

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[1].node.claim_funds(payment_preimage_1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 1);

	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 0);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

Expand DownExpand Up@@ -2290,7 +2290,6 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[0].node.claim_funds(payment_preimage_0);
	check_added_monitors!(nodes[0], 1);
	expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

	nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send.msgs[0]);
	nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send.commitment_msg);
Expand DownExpand Up@@ -2353,6 +2352,7 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (funding_txo, mon_id, _) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id).unwrap().clone();
	nodes[0].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_txo, mon_id);
	expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

	// New outbound messages should be generated immediately upon a call to
	// get_and_clear_pending_msg_events (but not before).
Expand DownExpand Up@@ -2606,7 +2606,15 @@ fn test_permanent_error_during_sending_shutdown() {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::PermanentFailure);

	assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
	check_closed_broadcast!(nodes[0], true);

	// We always send the `shutdown` response when initiating a shutdown, even if we immediately
	// close the channel thereafter.
	let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
	assert_eq!(msg_events.len(), 3);
	if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
	if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
	if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

	check_added_monitors!(nodes[0], 2);
	check_closed_event!(nodes[0], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2629,7 +2637,15 @@ fn test_permanent_error_during_handling_shutdown() {
	assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
	let shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
	nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &shutdown);
	check_closed_broadcast!(nodes[1], true);

	// We always send the `shutdown` response when receiving a shutdown, even if we immediately
	// close the channel thereafter.
	let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(msg_events.len(), 3);
	if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
	if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
	if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

	check_added_monitors!(nodes[1], 2);
	check_closed_event!(nodes[1], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2651,15 +2667,13 @@ fn double_temp_error() {
	// `claim_funds` results in a ChannelMonitorUpdate.
	nodes[1].node.claim_funds(payment_preimage_1);
	check_added_monitors!(nodes[1], 1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	let (funding_tx, latest_update_1, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	// Previously, this would've panicked due to a double-call to `Channel::monitor_update_failed`,
	// which had some asserts that prevented it from being called twice.
	nodes[1].node.claim_funds(payment_preimage_2);
	check_added_monitors!(nodes[1], 1);
	expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);
	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);

	let (_, latest_update_2, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
Expand All@@ -2668,11 +2682,24 @@ fn double_temp_error() {
	check_added_monitors!(nodes[1], 0);
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_tx, latest_update_2);

	// Complete the first HTLC.
	let events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(events.len(), 1);
	// Complete the first HTLC. Note that as a side-effect we handle the monitor update completions
	// and get both PaymentClaimed events at once.
	let msg_events = nodes[1].node.get_and_clear_pending_msg_events();

	let events = nodes[1].node.get_and_clear_pending_events();
	assert_eq!(events.len(), 2);
	match events[0] {
 Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_1),
 _ => panic!("Unexpected Event: {:?}", events[0]),
	}
	match events[1] {
 Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_2),
 _ => panic!("Unexpected Event: {:?}", events[1]),
	}

	assert_eq!(msg_events.len(), 1);
	let (update_fulfill_1, commitment_signed_b1, node_id) = {
 match &events[0] {
 match &msg_events[0] {
 &MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
 assert!(update_add_htlcs.is_empty());
 assert_eq!(update_fulfill_htlcs.len(), 1);
Expand Down
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var __m = "*";
var __re = new RegExp('^' + ".*" + '

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 Merged

TheBlueMatt
merged 11 commits into

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Feb 22, 2023
 Merged


Always process ChannelMonitorUpdates asynchronously
#1897
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5be29c6

Fix the err msg provided when a send fails due to peer disconnected


TheBlueMatt Feb 1, 2023
8aa518f

Add an infallible no-sign version of send_commitment_no_status_check


TheBlueMatt Dec 1, 2022
56f979b

Track actions to execute after a `ChannelMonitor` is updated


TheBlueMatt Nov 30, 2022
34218cc

Add storage for `ChannelMonitorUpdate`s in `Channel`s


TheBlueMatt Dec 19, 2022
ba07622

Add a new monitor update result handling macro


TheBlueMatt Dec 3, 2022
9802afa

Handle `MonitorUpdateCompletionAction`s after monitor update sync


TheBlueMatt Jan 27, 2023
46c6fb7

Move TODO from `handle_monitor_update_res` into `Channel`


TheBlueMatt Dec 3, 2022
4e002dc

Always process `ChannelMonitorUpdate`s asynchronously


TheBlueMatt Jan 11, 2023
c35253d

Use new monitor persistence flow in funding_signed handling


TheBlueMatt Feb 6, 2023
685b08d

Use the new monitor persistence flow for `funding_created` handling


TheBlueMatt Dec 3, 2022
2adb8ee

Don't generate a `ChannelMonitorUpdate` for closed chans on shutdown


TheBlueMatt Feb 19, 2023

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2 changes: 1 addition & 1 deletion
fuzz/src/chanmon_consistency.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -295,7 +295,7 @@ fn check_api_err(api_err: APIError) {
 // all others. If you hit this panic, the list of acceptable errors
 // is probably just stale and you should add new messages here.
 match err.as_str() {
 "Peer for first hop currently disconnected/pending monitor update!" => {},
 "Peer for first hop currently disconnected" => {},
 _ if err.starts_with("Cannot push more than their max accepted HTLCs ") => {},
 _ if err.starts_with("Cannot send value that would put us over the max HTLC value in flight our peer will accept ") => {},
 _ if err.starts_with("Cannot send value that would put our balance under counterparty-announced channel reserve value") => {},
Expand Down

20 changes: 17 additions & 3 deletions
lightning/src/chain/chainmonitor.rs

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -796,7 +796,7 @@ mod tests {
	use crate::ln::functional_test_utils::*;
	use crate::ln::msgs::ChannelMessageHandler;
	use crate::util::errors::APIError;
	use crate::util::events::{ClosureReason, MessageSendEvent, MessageSendEventsProvider};
	use crate::util::events::{Event, ClosureReason, MessageSendEvent, MessageSendEventsProvider};

	#[test]
	fn test_async_ooo_offchain_updates() {
Expand All@@ -819,10 +819,8 @@ mod tests {

 nodes[1].node.claim_funds(payment_preimage_1);
 check_added_monitors!(nodes[1], 1);
 expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
 nodes[1].node.claim_funds(payment_preimage_2);
 check_added_monitors!(nodes[1], 1);
 expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);

 let persistences = chanmon_cfgs[1].persister.offchain_monitor_updates.lock().unwrap().clone();
 assert_eq!(persistences.len(), 1);
Expand DownExpand Up@@ -850,8 +848,24 @@ mod tests {
 .find(|(txo, _)| txo == funding_txo).unwrap().1.contains(&next_update));
 assert!(nodes[1].chain_monitor.release_pending_monitor_events().is_empty());
 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
 nodes[1].chain_monitor.chain_monitor.channel_monitor_updated(*funding_txo, update_iter.next().unwrap().clone()).unwrap();

 let claim_events = nodes[1].node.get_and_clear_pending_events();
 assert_eq!(claim_events.len(), 2);
 match claim_events[0] {
 Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
 assert_eq!(payment_hash_1, *payment_hash);
 },
 _ => panic!("Unexpected event"),
 }
 match claim_events[1] {
 Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
 assert_eq!(payment_hash_2, *payment_hash);
 },
 _ => panic!("Unexpected event"),
 }

 // Now manually walk the commitment signed dance - because we claimed two payments
 // back-to-back it doesn't fit into the neat walk commitment_signed_dance does.

Expand Down

61 changes: 44 additions & 17 deletions
lightning/src/ln/chanmon_update_fail_tests.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,7 +143,7 @@ fn test_monitor_and_persister_update_fail() {
 let mut node_0_per_peer_lock;
 let mut node_0_peer_state_lock;
 let mut channel = get_channel_ref!(nodes[0], nodes[1], node_0_per_peer_lock, node_0_peer_state_lock, chan.2);
 if let Ok((_, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
 if let Ok(update) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
 // Check that even though the persister is returning a InProgress,
 // because the update is bogus, ultimately the error that's returned
 // should be a PermanentFailure.
Expand DownExpand Up@@ -1602,7 +1602,6 @@ fn test_monitor_update_fail_claim() {

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[1].node.claim_funds(payment_preimage_1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
	check_added_monitors!(nodes[1], 1);

Expand All@@ -1628,6 +1627,7 @@ fn test_monitor_update_fail_claim() {
	let events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(events.len(), 0);
	commitment_signed_dance!(nodes[1], nodes[2], payment_event.commitment_msg, false, true);
	expect_pending_htlcs_forwardable_ignore!(nodes[1]);

	let (_, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[0]);
	nodes[2].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3), PaymentId(payment_hash_3.0)).unwrap();
Expand All@@ -1645,6 +1645,7 @@ fn test_monitor_update_fail_claim() {
	let channel_id = chan_1.2;
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 0);

	let bs_fulfill_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
Expand All@@ -1653,7 +1654,7 @@ fn test_monitor_update_fail_claim() {
	expect_payment_sent!(nodes[0], payment_preimage_1);

	// Get the payment forwards, note that they were batched into one commitment update.
expect_pending_htlcs_forwardable!(nodes[1]);
	nodes[1].node.process_pending_htlc_forwards();
	check_added_monitors!(nodes[1], 1);
	let bs_forward_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
	nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &bs_forward_update.update_add_htlcs[0]);
Expand DownExpand Up@@ -1739,7 +1740,6 @@ fn test_monitor_update_on_pending_forwards() {
	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::NextHopChannel { node_id: Some(nodes[2].node.get_our_node_id()), channel_id: chan_2.2 }]);
	check_added_monitors!(nodes[1], 1);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_1.2).unwrap().clone();
Expand All@@ -1753,17 +1753,17 @@ fn test_monitor_update_on_pending_forwards() {

	let events = nodes[0].node.get_and_clear_pending_events();
	assert_eq!(events.len(), 3);
	if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[0] {
	if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[1] {
 assert_eq!(payment_hash, payment_hash_1);
 assert!(payment_failed_permanently);
	} else { panic!("Unexpected event!"); }
	match events[1] {
	match events[2] {
 Event::PaymentFailed { payment_hash, .. } => {
 assert_eq!(payment_hash, payment_hash_1);
 },
 _ => panic!("Unexpected event"),
	}
	match events[2] {
	match events[0] {
 Event::PendingHTLCsForwardable { .. } => { },
 _ => panic!("Unexpected event"),
	};
Expand DownExpand Up@@ -1803,14 +1803,14 @@ fn monitor_update_claim_fail_no_response() {

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[1].node.claim_funds(payment_preimage_1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 1);

	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 0);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

Expand DownExpand Up@@ -2290,7 +2290,6 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[0].node.claim_funds(payment_preimage_0);
	check_added_monitors!(nodes[0], 1);
	expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

	nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send.msgs[0]);
	nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send.commitment_msg);
Expand DownExpand Up@@ -2353,6 +2352,7 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (funding_txo, mon_id, _) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id).unwrap().clone();
	nodes[0].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_txo, mon_id);
	expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

	// New outbound messages should be generated immediately upon a call to
	// get_and_clear_pending_msg_events (but not before).
Expand DownExpand Up@@ -2606,7 +2606,15 @@ fn test_permanent_error_during_sending_shutdown() {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::PermanentFailure);

	assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
	check_closed_broadcast!(nodes[0], true);

	// We always send the `shutdown` response when initiating a shutdown, even if we immediately
	// close the channel thereafter.
	let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
	assert_eq!(msg_events.len(), 3);
	if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
	if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
	if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

	check_added_monitors!(nodes[0], 2);
	check_closed_event!(nodes[0], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2629,7 +2637,15 @@ fn test_permanent_error_during_handling_shutdown() {
	assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
	let shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
	nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &shutdown);
	check_closed_broadcast!(nodes[1], true);

	// We always send the `shutdown` response when receiving a shutdown, even if we immediately
	// close the channel thereafter.
	let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(msg_events.len(), 3);
	if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
	if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
	if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

	check_added_monitors!(nodes[1], 2);
	check_closed_event!(nodes[1], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2651,15 +2667,13 @@ fn double_temp_error() {
	// `claim_funds` results in a ChannelMonitorUpdate.
	nodes[1].node.claim_funds(payment_preimage_1);
	check_added_monitors!(nodes[1], 1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	let (funding_tx, latest_update_1, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	// Previously, this would've panicked due to a double-call to `Channel::monitor_update_failed`,
	// which had some asserts that prevented it from being called twice.
	nodes[1].node.claim_funds(payment_preimage_2);
	check_added_monitors!(nodes[1], 1);
	expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);
	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);

	let (_, latest_update_2, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
Expand All@@ -2668,11 +2682,24 @@ fn double_temp_error() {
	check_added_monitors!(nodes[1], 0);
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_tx, latest_update_2);

	// Complete the first HTLC.
	let events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(events.len(), 1);
	// Complete the first HTLC. Note that as a side-effect we handle the monitor update completions
	// and get both PaymentClaimed events at once.
	let msg_events = nodes[1].node.get_and_clear_pending_msg_events();

	let events = nodes[1].node.get_and_clear_pending_events();
	assert_eq!(events.len(), 2);
	match events[0] {
 Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_1),
 _ => panic!("Unexpected Event: {:?}", events[0]),
	}
	match events[1] {
 Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_2),
 _ => panic!("Unexpected Event: {:?}", events[1]),
	}

	assert_eq!(msg_events.len(), 1);
	let (update_fulfill_1, commitment_signed_b1, node_id) = {
 match &events[0] {
 match &msg_events[0] {
 &MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
 assert!(update_add_htlcs.is_empty());
 assert_eq!(update_fulfill_htlcs.len(), 1);
Expand Down
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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Always process ChannelMonitorUpdates asynchronously#1897

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 Merged

TheBlueMatt
merged 11 commits into

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Feb 22, 2023
 Merged


Always process ChannelMonitorUpdates asynchronously
#1897
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5be29c6

Fix the err msg provided when a send fails due to peer disconnected


TheBlueMatt Feb 1, 2023
8aa518f

Add an infallible no-sign version of send_commitment_no_status_check


TheBlueMatt Dec 1, 2022
56f979b

Track actions to execute after a `ChannelMonitor` is updated


TheBlueMatt Nov 30, 2022
34218cc

Add storage for `ChannelMonitorUpdate`s in `Channel`s


TheBlueMatt Dec 19, 2022
ba07622

Add a new monitor update result handling macro


TheBlueMatt Dec 3, 2022
9802afa

Handle `MonitorUpdateCompletionAction`s after monitor update sync


TheBlueMatt Jan 27, 2023
46c6fb7

Move TODO from `handle_monitor_update_res` into `Channel`


TheBlueMatt Dec 3, 2022
4e002dc

Always process `ChannelMonitorUpdate`s asynchronously


TheBlueMatt Jan 11, 2023
c35253d

Use new monitor persistence flow in funding_signed handling


TheBlueMatt Feb 6, 2023
685b08d

Use the new monitor persistence flow for `funding_created` handling


TheBlueMatt Dec 3, 2022
2adb8ee

Don't generate a `ChannelMonitorUpdate` for closed chans on shutdown


TheBlueMatt Feb 19, 2023

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2 changes: 1 addition & 1 deletion
fuzz/src/chanmon_consistency.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -295,7 +295,7 @@ fn check_api_err(api_err: APIError) {
 // all others. If you hit this panic, the list of acceptable errors
 // is probably just stale and you should add new messages here.
 match err.as_str() {
 "Peer for first hop currently disconnected/pending monitor update!" => {},
 "Peer for first hop currently disconnected" => {},
 _ if err.starts_with("Cannot push more than their max accepted HTLCs ") => {},
 _ if err.starts_with("Cannot send value that would put us over the max HTLC value in flight our peer will accept ") => {},
 _ if err.starts_with("Cannot send value that would put our balance under counterparty-announced channel reserve value") => {},
Expand Down

20 changes: 17 additions & 3 deletions
lightning/src/chain/chainmonitor.rs

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -796,7 +796,7 @@ mod tests {
	use crate::ln::functional_test_utils::*;
	use crate::ln::msgs::ChannelMessageHandler;
	use crate::util::errors::APIError;
	use crate::util::events::{ClosureReason, MessageSendEvent, MessageSendEventsProvider};
	use crate::util::events::{Event, ClosureReason, MessageSendEvent, MessageSendEventsProvider};

	#[test]
	fn test_async_ooo_offchain_updates() {
Expand All@@ -819,10 +819,8 @@ mod tests {

 nodes[1].node.claim_funds(payment_preimage_1);
 check_added_monitors!(nodes[1], 1);
 expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
 nodes[1].node.claim_funds(payment_preimage_2);
 check_added_monitors!(nodes[1], 1);
 expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);

 let persistences = chanmon_cfgs[1].persister.offchain_monitor_updates.lock().unwrap().clone();
 assert_eq!(persistences.len(), 1);
Expand DownExpand Up@@ -850,8 +848,24 @@ mod tests {
 .find(|(txo, _)| txo == funding_txo).unwrap().1.contains(&next_update));
 assert!(nodes[1].chain_monitor.release_pending_monitor_events().is_empty());
 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
 nodes[1].chain_monitor.chain_monitor.channel_monitor_updated(*funding_txo, update_iter.next().unwrap().clone()).unwrap();

 let claim_events = nodes[1].node.get_and_clear_pending_events();
 assert_eq!(claim_events.len(), 2);
 match claim_events[0] {
 Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
 assert_eq!(payment_hash_1, *payment_hash);
 },
 _ => panic!("Unexpected event"),
 }
 match claim_events[1] {
 Event::PaymentClaimed { ref payment_hash, amount_msat: 1_000_000, .. } => {
 assert_eq!(payment_hash_2, *payment_hash);
 },
 _ => panic!("Unexpected event"),
 }

 // Now manually walk the commitment signed dance - because we claimed two payments
 // back-to-back it doesn't fit into the neat walk commitment_signed_dance does.

Expand Down

61 changes: 44 additions & 17 deletions
lightning/src/ln/chanmon_update_fail_tests.rs

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Original file line numberDiff line numberDiff line change
Expand Up@@ -143,7 +143,7 @@ fn test_monitor_and_persister_update_fail() {
 let mut node_0_per_peer_lock;
 let mut node_0_peer_state_lock;
 let mut channel = get_channel_ref!(nodes[0], nodes[1], node_0_per_peer_lock, node_0_peer_state_lock, chan.2);
 if let Ok((_, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
 if let Ok(update) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
 // Check that even though the persister is returning a InProgress,
 // because the update is bogus, ultimately the error that's returned
 // should be a PermanentFailure.
Expand DownExpand Up@@ -1602,7 +1602,6 @@ fn test_monitor_update_fail_claim() {

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[1].node.claim_funds(payment_preimage_1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
	check_added_monitors!(nodes[1], 1);

Expand All@@ -1628,6 +1627,7 @@ fn test_monitor_update_fail_claim() {
	let events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(events.len(), 0);
	commitment_signed_dance!(nodes[1], nodes[2], payment_event.commitment_msg, false, true);
	expect_pending_htlcs_forwardable_ignore!(nodes[1]);

	let (_, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[0]);
	nodes[2].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3), PaymentId(payment_hash_3.0)).unwrap();
Expand All@@ -1645,6 +1645,7 @@ fn test_monitor_update_fail_claim() {
	let channel_id = chan_1.2;
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 0);

	let bs_fulfill_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
Expand All@@ -1653,7 +1654,7 @@ fn test_monitor_update_fail_claim() {
	expect_payment_sent!(nodes[0], payment_preimage_1);

	// Get the payment forwards, note that they were batched into one commitment update.
expect_pending_htlcs_forwardable!(nodes[1]);
	nodes[1].node.process_pending_htlc_forwards();
	check_added_monitors!(nodes[1], 1);
	let bs_forward_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
	nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &bs_forward_update.update_add_htlcs[0]);
Expand DownExpand Up@@ -1739,7 +1740,6 @@ fn test_monitor_update_on_pending_forwards() {
	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::NextHopChannel { node_id: Some(nodes[2].node.get_our_node_id()), channel_id: chan_2.2 }]);
	check_added_monitors!(nodes[1], 1);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_1.2).unwrap().clone();
Expand All@@ -1753,17 +1753,17 @@ fn test_monitor_update_on_pending_forwards() {

	let events = nodes[0].node.get_and_clear_pending_events();
	assert_eq!(events.len(), 3);
	if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[0] {
	if let Event::PaymentPathFailed { payment_hash, payment_failed_permanently, .. } = events[1] {
 assert_eq!(payment_hash, payment_hash_1);
 assert!(payment_failed_permanently);
	} else { panic!("Unexpected event!"); }
	match events[1] {
	match events[2] {
 Event::PaymentFailed { payment_hash, .. } => {
 assert_eq!(payment_hash, payment_hash_1);
 },
 _ => panic!("Unexpected event"),
	}
	match events[2] {
	match events[0] {
 Event::PendingHTLCsForwardable { .. } => { },
 _ => panic!("Unexpected event"),
	};
Expand DownExpand Up@@ -1803,14 +1803,14 @@ fn monitor_update_claim_fail_no_response() {

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[1].node.claim_funds(payment_preimage_1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 1);

	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (outpoint, latest_update, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, latest_update);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	check_added_monitors!(nodes[1], 0);
	assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());

Expand DownExpand Up@@ -2290,7 +2290,6 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	nodes[0].node.claim_funds(payment_preimage_0);
	check_added_monitors!(nodes[0], 1);
	expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

	nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send.msgs[0]);
	nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send.commitment_msg);
Expand DownExpand Up@@ -2353,6 +2352,7 @@ fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);
	let (funding_txo, mon_id, _) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id).unwrap().clone();
	nodes[0].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_txo, mon_id);
	expect_payment_claimed!(nodes[0], payment_hash_0, 100_000);

	// New outbound messages should be generated immediately upon a call to
	// get_and_clear_pending_msg_events (but not before).
Expand DownExpand Up@@ -2606,7 +2606,15 @@ fn test_permanent_error_during_sending_shutdown() {
	chanmon_cfgs[0].persister.set_update_ret(ChannelMonitorUpdateStatus::PermanentFailure);

	assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
	check_closed_broadcast!(nodes[0], true);

	// We always send the `shutdown` response when initiating a shutdown, even if we immediately
	// close the channel thereafter.
	let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
	assert_eq!(msg_events.len(), 3);
	if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
	if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
	if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

	check_added_monitors!(nodes[0], 2);
	check_closed_event!(nodes[0], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2629,7 +2637,15 @@ fn test_permanent_error_during_handling_shutdown() {
	assert!(nodes[0].node.close_channel(&channel_id, &nodes[1].node.get_our_node_id()).is_ok());
	let shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
	nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &shutdown);
	check_closed_broadcast!(nodes[1], true);

	// We always send the `shutdown` response when receiving a shutdown, even if we immediately
	// close the channel thereafter.
	let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(msg_events.len(), 3);
	if let MessageSendEvent::SendShutdown { .. } = msg_events[0] {} else { panic!(); }
	if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg_events[1] {} else { panic!(); }
	if let MessageSendEvent::HandleError { .. } = msg_events[2] {} else { panic!(); }

	check_added_monitors!(nodes[1], 2);
	check_closed_event!(nodes[1], 1, ClosureReason::ProcessingError { err: "ChannelMonitor storage failure".to_string() });
}
Expand All@@ -2651,15 +2667,13 @@ fn double_temp_error() {
	// `claim_funds` results in a ChannelMonitorUpdate.
	nodes[1].node.claim_funds(payment_preimage_1);
	check_added_monitors!(nodes[1], 1);
	expect_payment_claimed!(nodes[1], payment_hash_1, 1_000_000);
	let (funding_tx, latest_update_1, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();

	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
	// Previously, this would've panicked due to a double-call to `Channel::monitor_update_failed`,
	// which had some asserts that prevented it from being called twice.
	nodes[1].node.claim_funds(payment_preimage_2);
	check_added_monitors!(nodes[1], 1);
	expect_payment_claimed!(nodes[1], payment_hash_2, 1_000_000);
	chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::Completed);

	let (_, latest_update_2, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
Expand All@@ -2668,11 +2682,24 @@ fn double_temp_error() {
	check_added_monitors!(nodes[1], 0);
	nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(funding_tx, latest_update_2);

	// Complete the first HTLC.
	let events = nodes[1].node.get_and_clear_pending_msg_events();
	assert_eq!(events.len(), 1);
	// Complete the first HTLC. Note that as a side-effect we handle the monitor update completions
	// and get both PaymentClaimed events at once.
	let msg_events = nodes[1].node.get_and_clear_pending_msg_events();

	let events = nodes[1].node.get_and_clear_pending_events();
	assert_eq!(events.len(), 2);
	match events[0] {
 Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_1),
 _ => panic!("Unexpected Event: {:?}", events[0]),
	}
	match events[1] {
 Event::PaymentClaimed { amount_msat: 1_000_000, payment_hash, .. } => assert_eq!(payment_hash, payment_hash_2),
 _ => panic!("Unexpected Event: {:?}", events[1]),
	}

	assert_eq!(msg_events.len(), 1);
	let (update_fulfill_1, commitment_signed_b1, node_id) = {
 match &events[0] {
 match &msg_events[0] {
 &MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
 assert!(update_add_htlcs.is_empty());
 assert_eq!(update_fulfill_htlcs.len(), 1);
Expand Down
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