X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Futil%2Fevents.rs;h=a06c7f1e3c0b75ca7bba3562407afb22f5cd158a;hb=d6aa1bc85a537e2f1e61da3edb50bc24fcd80f7e;hp=5a0a9d0cc0a7cf584f7509fda22669fb28b9d5df;hpb=790d26f63f1ed6fff8742bd0df58bf010a11b567;p=rust-lightning diff --git a/lightning/src/util/events.rs b/lightning/src/util/events.rs index 5a0a9d0c..a06c7f1e 100644 --- a/lightning/src/util/events.rs +++ b/lightning/src/util/events.rs @@ -24,7 +24,7 @@ use crate::ln::msgs; use crate::ln::msgs::DecodeError; use crate::ln::{PaymentPreimage, PaymentHash, PaymentSecret}; use crate::routing::gossip::NetworkUpdate; -use crate::util::ser::{BigSize, FixedLengthReader, Writeable, Writer, MaybeReadable, Readable, VecReadWrapper, VecWriteWrapper, OptionDeserWrapper}; +use crate::util::ser::{BigSize, FixedLengthReader, Writeable, Writer, MaybeReadable, Readable, WithoutLength, OptionDeserWrapper}; use crate::routing::router::{RouteHop, RouteParameters}; use bitcoin::{PackedLockTime, Transaction}; @@ -318,11 +318,11 @@ pub enum Event { channel_value_satoshis: u64, /// The script which should be used in the transaction output. output_script: Script, - /// The `user_channel_id` value passed in to [`ChannelManager::create_channel`], or 0 for - /// an inbound channel. + /// The `user_channel_id` value passed in to [`ChannelManager::create_channel`], or a + /// random value for an inbound channel. /// /// [`ChannelManager::create_channel`]: crate::ln::channelmanager::ChannelManager::create_channel - user_channel_id: u64, + user_channel_id: u128, }, /// Indicates we've received (an offer of) money! Just gotta dig out that payment preimage and /// feed it to [`ChannelManager::claim_funds`] to get it.... @@ -612,12 +612,12 @@ pub enum Event { /// The `user_channel_id` value passed in to [`ChannelManager::create_channel`] for outbound /// channels, or to [`ChannelManager::accept_inbound_channel`] for inbound channels if /// [`UserConfig::manually_accept_inbound_channels`] config flag is set to true. Otherwise - /// `user_channel_id` will be 0 for an inbound channel. + /// `user_channel_id` will be randomized for an inbound channel. /// /// [`ChannelManager::create_channel`]: crate::ln::channelmanager::ChannelManager::create_channel /// [`ChannelManager::accept_inbound_channel`]: crate::ln::channelmanager::ChannelManager::accept_inbound_channel /// [`UserConfig::manually_accept_inbound_channels`]: crate::util::config::UserConfig::manually_accept_inbound_channels - user_channel_id: u64, + user_channel_id: u128, /// The node_id of the channel counterparty. counterparty_node_id: PublicKey, /// The features that this channel will operate with. @@ -632,13 +632,13 @@ pub enum Event { /// The `user_channel_id` value passed in to [`ChannelManager::create_channel`] for outbound /// channels, or to [`ChannelManager::accept_inbound_channel`] for inbound channels if /// [`UserConfig::manually_accept_inbound_channels`] config flag is set to true. Otherwise - /// `user_channel_id` will be 0 for an inbound channel. + /// `user_channel_id` will be randomized for an inbound channel. /// This will always be zero for objects serialized with LDK versions prior to 0.0.102. /// /// [`ChannelManager::create_channel`]: crate::ln::channelmanager::ChannelManager::create_channel /// [`ChannelManager::accept_inbound_channel`]: crate::ln::channelmanager::ChannelManager::accept_inbound_channel /// [`UserConfig::manually_accept_inbound_channels`]: crate::util::config::UserConfig::manually_accept_inbound_channels - user_channel_id: u64, + user_channel_id: u128, /// The reason the channel was closed. reason: ClosureReason }, @@ -785,7 +785,7 @@ impl Writeable for Event { (1, network_update, option), (2, payment_failed_permanently, required), (3, all_paths_failed, required), - (5, path, vec_type), + (5, *path, vec_type), (7, short_channel_id, option), (9, retry, option), (11, payment_id, option), @@ -799,7 +799,7 @@ impl Writeable for Event { &Event::SpendableOutputs { ref outputs } => { 5u8.write(writer)?; write_tlv_fields!(writer, { - (0, VecWriteWrapper(outputs), required), + (0, WithoutLength(outputs), required), }); }, &Event::PaymentForwarded { fee_earned_msat, prev_channel_id, claim_from_onchain_tx, next_channel_id } => { @@ -813,10 +813,16 @@ impl Writeable for Event { }, &Event::ChannelClosed { ref channel_id, ref user_channel_id, ref reason } => { 9u8.write(writer)?; + // `user_channel_id` used to be a single u64 value. In order to remain backwards + // compatible with versions prior to 0.0.113, the u128 is serialized as two + // separate u64 values. + let user_channel_id_low = *user_channel_id as u64; + let user_channel_id_high = (*user_channel_id >> 64) as u64; write_tlv_fields!(writer, { (0, channel_id, required), - (1, user_channel_id, required), - (2, reason, required) + (1, user_channel_id_low, required), + (2, reason, required), + (3, user_channel_id_high, required), }); }, &Event::DiscardFunding { ref channel_id, ref transaction } => { @@ -831,7 +837,7 @@ impl Writeable for Event { write_tlv_fields!(writer, { (0, payment_id, required), (2, payment_hash, option), - (4, path, vec_type) + (4, *path, vec_type) }) }, &Event::PaymentFailed { ref payment_id, ref payment_hash } => { @@ -859,7 +865,7 @@ impl Writeable for Event { write_tlv_fields!(writer, { (0, payment_id, required), (2, payment_hash, required), - (4, path, vec_type) + (4, *path, vec_type) }) }, &Event::ProbeFailed { ref payment_id, ref payment_hash, ref path, ref short_channel_id } => { @@ -867,7 +873,7 @@ impl Writeable for Event { write_tlv_fields!(writer, { (0, payment_id, required), (2, payment_hash, required), - (4, path, vec_type), + (4, *path, vec_type), (6, short_channel_id, option), }) }, @@ -1007,7 +1013,7 @@ impl MaybeReadable for Event { 4u8 => Ok(None), 5u8 => { let f = || { - let mut outputs = VecReadWrapper(Vec::new()); + let mut outputs = WithoutLength(Vec::new()); read_tlv_fields!(reader, { (0, outputs, required), }); @@ -1035,14 +1041,22 @@ impl MaybeReadable for Event { let f = || { let mut channel_id = [0; 32]; let mut reason = None; - let mut user_channel_id_opt = None; + let mut user_channel_id_low_opt: Option = None; + let mut user_channel_id_high_opt: Option = None; read_tlv_fields!(reader, { (0, channel_id, required), - (1, user_channel_id_opt, option), + (1, user_channel_id_low_opt, option), (2, reason, ignorable), + (3, user_channel_id_high_opt, option), }); if reason.is_none() { return Ok(None); } - let user_channel_id = if let Some(id) = user_channel_id_opt { id } else { 0 }; + + // `user_channel_id` used to be a single u64 value. In order to remain + // backwards compatible with versions prior to 0.0.113, the u128 is serialized + // as two separate u64 values. + let user_channel_id = (user_channel_id_low_opt.unwrap_or(0) as u128) + + ((user_channel_id_high_opt.unwrap_or(0) as u128) << 64); + Ok(Some(Event::ChannelClosed { channel_id, user_channel_id, reason: reason.unwrap() })) }; f() @@ -1180,7 +1194,7 @@ impl MaybeReadable for Event { 29u8 => { let f = || { let mut channel_id = [0; 32]; - let mut user_channel_id: u64 = 0; + let mut user_channel_id: u128 = 0; let mut counterparty_node_id = OptionDeserWrapper(None); let mut channel_type = OptionDeserWrapper(None); read_tlv_fields!(reader, { @@ -1400,6 +1414,10 @@ pub trait OnionMessageProvider { /// /// Events are processed by passing an [`EventHandler`] to [`process_pending_events`]. /// +/// Implementations of this trait may also feature an async version of event handling, as shown with +/// [`ChannelManager::process_pending_events_async`] and +/// [`ChainMonitor::process_pending_events_async`]. +/// /// # Requirements /// /// When using this trait, [`process_pending_events`] will call [`handle_event`] for each pending @@ -1426,6 +1444,8 @@ pub trait OnionMessageProvider { /// [`handle_event`]: EventHandler::handle_event /// [`ChannelManager::process_pending_events`]: crate::ln::channelmanager::ChannelManager#method.process_pending_events /// [`ChainMonitor::process_pending_events`]: crate::chain::chainmonitor::ChainMonitor#method.process_pending_events +/// [`ChannelManager::process_pending_events_async`]: crate::ln::channelmanager::ChannelManager::process_pending_events_async +/// [`ChainMonitor::process_pending_events_async`]: crate::chain::chainmonitor::ChainMonitor::process_pending_events_async pub trait EventsProvider { /// Processes any events generated since the last call using the given event handler. /// @@ -1434,21 +1454,25 @@ pub trait EventsProvider { } /// A trait implemented for objects handling events from [`EventsProvider`]. +/// +/// An async variation also exists for implementations of [`EventsProvider`] that support async +/// event handling. The async event handler should satisfy the generic bounds: `F: +/// core::future::Future, H: Fn(Event) -> F`. pub trait EventHandler { /// Handles the given [`Event`]. /// /// See [`EventsProvider`] for details that must be considered when implementing this method. - fn handle_event(&self, event: &Event); + fn handle_event(&self, event: Event); } -impl EventHandler for F where F: Fn(&Event) { - fn handle_event(&self, event: &Event) { +impl EventHandler for F where F: Fn(Event) { + fn handle_event(&self, event: Event) { self(event) } } impl EventHandler for Arc { - fn handle_event(&self, event: &Event) { + fn handle_event(&self, event: Event) { self.deref().handle_event(event) } }