Add interactive tx constructor to all V2-related channel structs

Here we add the `interactive_tx_constructor` field to the `Channel`,
`OutboundV2Channel`, and `InboundV2Channel` structs.

Author: dunxen

lightning/src/ln/channel.rs

@@ -27,6 +27,7 @@ use bitcoin::secp256k1;
 
 use crate::ln::types::{ChannelId, PaymentPreimage, PaymentHash};
 use crate::ln::features::{ChannelTypeFeatures, InitFeatures};
+use crate::ln::interactivetxs::InteractiveTxConstructor;
 use crate::ln::msgs;
 use crate::ln::msgs::{ClosingSigned, ClosingSignedFeeRange, DecodeError};
 use crate::ln::script::{self, ShutdownScript};
@@ -3834,6 +3835,8 @@ pub(super) struct DualFundingChannelContext {
 pub(super) struct Channel<SP: Deref> where SP::Target: SignerProvider {
 	pub context: ChannelContext<SP>,
 	pub dual_funding_channel_context: Option<DualFundingChannelContext>,
+	/// The current interactive transaction construction session under negotiation.
+	interactive_tx_constructor: Option<InteractiveTxConstructor>,
 }
 
 #[cfg(any(test, fuzzing))]
@@ -8013,6 +8016,7 @@ impl<SP: Deref> OutboundV1Channel<SP> where SP::Target: SignerProvider {
 		let mut channel = Channel {
 			context: self.context,
 			dual_funding_channel_context: None,
+			interactive_tx_constructor: None,
 		};
 
 		let need_channel_ready = channel.check_get_channel_ready(0, logger).is_some();
@@ -8121,7 +8125,7 @@ impl<SP: Deref> InboundV1Channel<SP> where SP::Target: SignerProvider {
 				msg.push_msat,
 				msg.common_fields.clone(),
 			)?,
-			unfunded_context: UnfundedChannelContext { unfunded_channel_age_ticks: 0 }
+			unfunded_context: UnfundedChannelContext { unfunded_channel_age_ticks: 0 },
 		};
 		Ok(chan)
 	}
@@ -8247,6 +8251,7 @@ impl<SP: Deref> InboundV1Channel<SP> where SP::Target: SignerProvider {
 		let mut channel = Channel {
 			context: self.context,
 			dual_funding_channel_context: None,
+			interactive_tx_constructor: None,
 		};
 		let need_channel_ready = channel.check_get_channel_ready(0, logger).is_some();
 		channel.monitor_updating_paused(false, false, need_channel_ready, Vec::new(), Vec::new(), Vec::new());
@@ -8260,6 +8265,8 @@ pub(super) struct OutboundV2Channel<SP: Deref> where SP::Target: SignerProvider
 	pub context: ChannelContext<SP>,
 	pub unfunded_context: UnfundedChannelContext,
 	pub dual_funding_context: DualFundingChannelContext,
+	/// The current interactive transaction construction session under negotiation.
+	interactive_tx_constructor: Option<InteractiveTxConstructor>,
 }
 
 impl<SP: Deref> OutboundV2Channel<SP> where SP::Target: SignerProvider {
@@ -8311,7 +8318,8 @@ impl<SP: Deref> OutboundV2Channel<SP> where SP::Target: SignerProvider {
 				their_funding_satoshis: 0,
 				funding_tx_locktime,
 				funding_feerate_sat_per_1000_weight,
-			}
+			},
+			interactive_tx_constructor: None,
 		};
 		Ok(chan)
 	}
@@ -8385,6 +8393,8 @@ pub(super) struct InboundV2Channel<SP: Deref> where SP::Target: SignerProvider {
 	pub context: ChannelContext<SP>,
 	pub unfunded_context: UnfundedChannelContext,
 	pub dual_funding_context: DualFundingChannelContext,
+	/// The current interactive transaction construction session under negotiation.
+	interactive_tx_constructor: Option<InteractiveTxConstructor>,
 }
 
 impl<SP: Deref> InboundV2Channel<SP> where SP::Target: SignerProvider {
@@ -8456,7 +8466,8 @@ impl<SP: Deref> InboundV2Channel<SP> where SP::Target: SignerProvider {
 				their_funding_satoshis: msg.common_fields.funding_satoshis,
 				funding_tx_locktime: msg.locktime,
 				funding_feerate_sat_per_1000_weight: msg.funding_feerate_sat_per_1000_weight,
-			}
+			},
+			interactive_tx_constructor: None,
 		};
 
 		Ok(chan)
@@ -9598,6 +9609,7 @@ impl<'a, 'b, 'c, ES: Deref, SP: Deref> ReadableArgs<(&'a ES, &'b SP, u32, &'c Ch
 				is_manual_broadcast: is_manual_broadcast.unwrap_or(false),
 			},
 			dual_funding_channel_context: None,
+			interactive_tx_constructor: None,
 		})
 	}
 }