Rollover order boilerplate

Add support for multiple update proposals.
A taker might request to update/change a CFD in different ways, e.g.: propose to settle it or roll over.
In order to support different scenarios we introduce another layer of abstraction.
The rest of the changes creates a boilerplate for the actual rollover protocol.

daemon/src/maker.rs

@@ -1,6 +1,6 @@
 use crate::auth::MAKER_USERNAME;
 use crate::db::load_all_cfds;
-use crate::model::cfd::SettlementProposals;
+use crate::model::cfd::UpdateCfdProposals;
 use crate::seed::Seed;
 use crate::wallet::Wallet;
 use anyhow::{Context, Result};
@@ -113,8 +113,8 @@ async fn main() -> Result<()> {
 
     let (order_feed_sender, order_feed_receiver) = watch::channel::<Option<Order>>(None);
     let (wallet_feed_sender, wallet_feed_receiver) = watch::channel::<WalletInfo>(wallet_info);
-    let (settlement_feed_sender, settlement_feed_receiver) =
-        watch::channel::<SettlementProposals>(HashMap::new());
+    let (update_cfd_feed_sender, update_cfd_feed_receiver) =
+        watch::channel::<UpdateCfdProposals>(HashMap::new());
 
     let figment = rocket::Config::figment()
         .merge(("databases.maker.url", data_dir.join("maker.sqlite")))
@@ -131,7 +131,7 @@ async fn main() -> Result<()> {
     rocket::custom(figment)
         .manage(order_feed_receiver)
         .manage(wallet_feed_receiver)
-        .manage(settlement_feed_receiver)
+        .manage(update_cfd_feed_receiver)
         .manage(auth_password)
         .manage(quote_updates)
         .attach(Db::init())
@@ -180,7 +180,7 @@ async fn main() -> Result<()> {
                     schnorrsig::PublicKey::from_keypair(SECP256K1, &oracle),
                     cfd_feed_sender,
                     order_feed_sender,
-                    settlement_feed_sender,
+                    update_cfd_feed_sender,
                     maker_inc_connections_address.clone(),
                     monitor_actor_address.clone(),
                     oracle_actor_address,

daemon/src/maker_cfd.rs

@@ -6,11 +6,12 @@ use crate::db::{
 use crate::maker_inc_connections::TakerCommand;
 use crate::model::cfd::{
     Cfd, CfdState, CfdStateChangeEvent, CfdStateCommon, Dlc, Order, OrderId, Origin, Role,
-    SettlementKind, SettlementProposal, SettlementProposals,
+    RollOverProposal, SettlementKind, SettlementProposal, UpdateCfdProposal, UpdateCfdProposals,
 };
 use crate::model::{OracleEventId, TakerId, Usd};
 use crate::monitor::MonitorParams;
 use crate::wallet::Wallet;
+use crate::wire::TakerToMaker;
 use crate::{maker_inc_connections, monitor, oracle, setup_contract, wire};
 use anyhow::{Context as _, Result};
 use async_trait::async_trait;
@@ -43,6 +44,14 @@ pub struct RejectSettlement {
     pub order_id: OrderId,
 }
 
+pub struct AcceptRollOver {
+    pub order_id: OrderId,
+}
+
+pub struct RejectRollOver {
+    pub order_id: OrderId,
+}
+
 pub struct NewOrder {
     pub price: Usd,
     pub min_quantity: Usd,
@@ -69,14 +78,14 @@ pub struct Actor {
     oracle_pk: schnorrsig::PublicKey,
     cfd_feed_actor_inbox: watch::Sender<Vec<Cfd>>,
     order_feed_sender: watch::Sender<Option<Order>>,
-    settlements_feed_sender: watch::Sender<SettlementProposals>,
+    update_cfd_feed_sender: watch::Sender<UpdateCfdProposals>,
     takers: Address<maker_inc_connections::Actor>,
     current_order_id: Option<OrderId>,
     monitor_actor: Address<monitor::Actor<Actor>>,
     setup_state: SetupState,
     latest_announcements: Option<BTreeMap<OracleEventId, oracle::Announcement>>,
     oracle_actor: Address<oracle::Actor<Actor, monitor::Actor<Actor>>>,
-    current_settlement_proposals: SettlementProposals,
+    current_pending_proposals: UpdateCfdProposals,
 }
 
 enum SetupState {
@@ -95,7 +104,7 @@ impl Actor {
         oracle_pk: schnorrsig::PublicKey,
         cfd_feed_actor_inbox: watch::Sender<Vec<Cfd>>,
         order_feed_sender: watch::Sender<Option<Order>>,
-        settlements_feed_sender: watch::Sender<SettlementProposals>,
+        update_cfd_feed_sender: watch::Sender<UpdateCfdProposals>,
         takers: Address<maker_inc_connections::Actor>,
         monitor_actor: Address<monitor::Actor<Actor>>,
         oracle_actor: Address<oracle::Actor<Actor, monitor::Actor<Actor>>>,
@@ -106,21 +115,21 @@ impl Actor {
             oracle_pk,
             cfd_feed_actor_inbox,
             order_feed_sender,
-            settlements_feed_sender,
+            update_cfd_feed_sender,
             takers,
             current_order_id: None,
             monitor_actor,
             setup_state: SetupState::None,
             latest_announcements: None,
             oracle_actor,
-            current_settlement_proposals: HashMap::new(),
+            current_pending_proposals: HashMap::new(),
         }
     }
 
-    fn send_current_settlement_proposals(&self) -> Result<()> {
+    fn send_pending_proposals(&self) -> Result<()> {
         Ok(self
-            .settlements_feed_sender
-            .send(self.current_settlement_proposals.clone())?)
+            .update_cfd_feed_sender
+            .send(self.current_pending_proposals.clone())?)
     }
 
     async fn handle_new_order(
@@ -189,9 +198,32 @@ impl Actor {
             "Received settlement proposal from the taker: {:?}",
             proposal
         );
-        self.current_settlement_proposals
-            .insert(proposal.order_id, (proposal, SettlementKind::Incoming));
-        self.send_current_settlement_proposals()?;
+        self.current_pending_proposals.insert(
+            proposal.order_id,
+            UpdateCfdProposal::Settlement {
+                proposal,
+                direction: SettlementKind::Incoming,
+            },
+        );
+        self.send_pending_proposals()?;
+
+        Ok(())
+    }
+
+    async fn handle_propose_roll_over(&mut self, proposal: RollOverProposal) -> Result<()> {
+        tracing::info!(
+            "Received proposal from the taker: {:?} to roll over order {}",
+            proposal,
+            proposal.order_id
+        );
+        self.current_pending_proposals.insert(
+            proposal.order_id,
+            UpdateCfdProposal::RollOverProposal {
+                proposal,
+                direction: SettlementKind::Incoming,
+            },
+        );
+        self.send_pending_proposals()?;
 
         Ok(())
     }
@@ -487,10 +519,10 @@ impl Actor {
         tracing::debug!(%order_id, "Maker accepts a settlement proposal" );
         // TODO: Initiate the settlement
 
-        self.current_settlement_proposals
+        self.current_pending_proposals
             .remove(&order_id)
             .context("Could not find proposal for given order id")?;
-        self.send_current_settlement_proposals()?;
+        self.send_pending_proposals()?;
         Ok(())
     }
 
@@ -499,10 +531,33 @@ impl Actor {
         // TODO: Handle rejection offer:
         // - notify the taker that the settlement was rejected
 
-        self.current_settlement_proposals
+        self.current_pending_proposals
             .remove(&order_id)
             .context("Could not find proposal for given order id")?;
-        self.send_current_settlement_proposals()?;
+        self.send_pending_proposals()?;
+        Ok(())
+    }
+
+    async fn handle_accept_roll_over(&mut self, order_id: OrderId) -> Result<()> {
+        tracing::debug!(%order_id, "Maker accepts a roll over proposal" );
+
+        // TODO: Initiate the roll over logic
+
+        self.current_pending_proposals
+            .remove(&order_id)
+            .context("Could not find roll over proposal for given order id")?;
+        self.send_pending_proposals()?;
+        Ok(())
+    }
+
+    async fn handle_reject_roll_over(&mut self, order_id: OrderId) -> Result<()> {
+        tracing::debug!(%order_id, "Maker rejects a roll over proposal" );
+        // TODO: Handle rejection and notify the taker that the roll over was rejected
+
+        self.current_pending_proposals
+            .remove(&order_id)
+            .context("Could not find roll over proposal for given order id")?;
+        self.send_pending_proposals()?;
         Ok(())
     }
 
@@ -588,6 +643,20 @@ impl Handler<RejectSettlement> for Actor {
     }
 }
 
+#[async_trait]
+impl Handler<AcceptRollOver> for Actor {
+    async fn handle(&mut self, msg: AcceptRollOver, _ctx: &mut Context<Self>) {
+        log_error!(self.handle_accept_roll_over(msg.order_id))
+    }
+}
+
+#[async_trait]
+impl Handler<RejectRollOver> for Actor {
+    async fn handle(&mut self, msg: RejectRollOver, _ctx: &mut Context<Self>) {
+        log_error!(self.handle_reject_roll_over(msg.order_id))
+    }
+}
+
 #[async_trait]
 impl Handler<Commit> for Actor {
     async fn handle(&mut self, msg: Commit, _ctx: &mut Context<Self>) {
@@ -662,6 +731,15 @@ impl Handler<TakerStreamMessage> for Actor {
             wire::TakerToMaker::Protocol(msg) => {
                 log_error!(self.handle_inc_protocol_msg(taker, msg))
             }
+            TakerToMaker::ProposeRollOver {
+                order_id,
+                timestamp,
+            } => {
+                log_error!(self.handle_propose_roll_over(RollOverProposal {
+                    order_id,
+                    timestamp,
+                }))
+            }
         }
 
         KeepRunning::Yes
@@ -714,6 +792,14 @@ impl Message for RejectSettlement {
     type Result = ();
 }
 
+impl Message for AcceptRollOver {
+    type Result = ();
+}
+
+impl Message for RejectRollOver {
+    type Result = ();
+}
+
 // this signature is a bit different because we use `Address::attach_stream`
 impl Message for TakerStreamMessage {
     type Result = KeepRunning;

daemon/src/model/cfd.rs

@@ -345,6 +345,18 @@ impl fmt::Display for CfdState {
     }
 }
 
+#[derive(Debug, Clone)]
+pub enum UpdateCfdProposal {
+    Settlement {
+        proposal: SettlementProposal,
+        direction: SettlementKind,
+    },
+    RollOverProposal {
+        proposal: RollOverProposal,
+        direction: SettlementKind,
+    },
+}
+
 /// Proposed collaborative settlement
 #[derive(Debug, Clone)]
 pub struct SettlementProposal {
@@ -354,6 +366,14 @@ pub struct SettlementProposal {
     pub maker: Amount,
 }
 
+/// Proposal to roll over over a fixed length.
+/// The length of the roll over is defined by the maker.
+#[derive(Debug, Clone)]
+pub struct RollOverProposal {
+    pub order_id: OrderId,
+    pub timestamp: SystemTime,
+}
+
 #[derive(Debug, Clone)]
 #[allow(dead_code)] // Variants (for now) used by different binaries.
 pub enum SettlementKind {
@@ -361,7 +381,7 @@ pub enum SettlementKind {
     Outgoing,
 }
 
-pub type SettlementProposals = HashMap<OrderId, (SettlementProposal, SettlementKind)>;
+pub type UpdateCfdProposals = HashMap<OrderId, UpdateCfdProposal>;
 
 /// Represents a cfd (including state)
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]

daemon/src/routes_maker.rs

@@ -1,5 +1,5 @@
 use crate::auth::Authenticated;
-use crate::model::cfd::{Cfd, Order, OrderId, Role, SettlementProposals};
+use crate::model::cfd::{Cfd, Order, OrderId, Role, UpdateCfdProposals};
 use crate::model::{Usd, WalletInfo};
 use crate::routes::EmbeddedFileExt;
 use crate::to_sse_event::{CfdAction, CfdsWithAuxData, ToSseEvent};
@@ -24,7 +24,7 @@ pub async fn maker_feed(
     rx_order: &State<watch::Receiver<Option<Order>>>,
     rx_wallet: &State<watch::Receiver<WalletInfo>>,
     rx_quote: &State<watch::Receiver<bitmex_price_feed::Quote>>,
-    rx_settlements: &State<watch::Receiver<SettlementProposals>>,
+    rx_settlements: &State<watch::Receiver<UpdateCfdProposals>>,
     _auth: Authenticated,
 ) -> EventStream![] {
     let mut rx_cfds = rx_cfds.inner().clone();
@@ -149,6 +149,19 @@ pub async fn post_cfd_action(
                 .await
                 .expect("actor to always be available");
         }
+
+        CfdAction::AcceptRollOver => {
+            cfd_actor_address
+                .do_send_async(maker_cfd::AcceptRollOver { order_id: id })
+                .await
+                .expect("actor to always be available");
+        }
+        CfdAction::RejectRollOver => {
+            cfd_actor_address
+                .do_send_async(maker_cfd::RejectRollOver { order_id: id })
+                .await
+                .expect("actor to always be available");
+        }
         CfdAction::Commit => {
             cfd_actor_address
                 .do_send_async(maker_cfd::Commit { order_id: id })
@@ -160,6 +173,11 @@ pub async fn post_cfd_action(
                 "Collaborative settlement can only be triggered by taker".to_string(),
             )));
         }
+        CfdAction::RollOver => {
+            return Err(status::BadRequest(Some(
+                "RollOver proposal can only be triggered by taker".to_string(),
+            )));
+        }
     }
 
     Ok(status::Accepted(None))

daemon/src/routes_taker.rs

@@ -1,4 +1,4 @@
-use crate::model::cfd::{calculate_buy_margin, Cfd, Order, OrderId, Role, SettlementProposals};
+use crate::model::cfd::{calculate_buy_margin, Cfd, Order, OrderId, Role, UpdateCfdProposals};
 use crate::model::{Leverage, Usd, WalletInfo};
 use crate::routes::EmbeddedFileExt;
 use crate::to_sse_event::{CfdAction, CfdsWithAuxData, ToSseEvent};
@@ -23,7 +23,7 @@ pub async fn feed(
     rx_order: &State<watch::Receiver<Option<Order>>>,
     rx_wallet: &State<watch::Receiver<WalletInfo>>,
     rx_quote: &State<watch::Receiver<bitmex_price_feed::Quote>>,
-    rx_settlements: &State<watch::Receiver<SettlementProposals>>,
+    rx_settlements: &State<watch::Receiver<UpdateCfdProposals>>,
 ) -> EventStream![] {
     let mut rx_cfds = rx_cfds.inner().clone();
     let mut rx_order = rx_order.inner().clone();
@@ -100,7 +100,9 @@ pub async fn post_cfd_action(
         CfdAction::AcceptOrder
         | CfdAction::RejectOrder
         | CfdAction::AcceptSettlement
-        | CfdAction::RejectSettlement => {
+        | CfdAction::RejectSettlement
+        | CfdAction::AcceptRollOver
+        | CfdAction::RejectRollOver => {
             return Err(status::BadRequest(None));
         }
         CfdAction::Commit => {
@@ -119,6 +121,12 @@ pub async fn post_cfd_action(
                 .await
                 .expect("actor to always be available");
         }
+        CfdAction::RollOver => {
+            cfd_actor_address
+                .do_send_async(taker_cfd::ProposeRollOver { order_id: id })
+                .await
+                .expect("actor to always be available");
+        }
     }
 
     Ok(status::Accepted(None))

daemon/src/taker.rs

@@ -1,5 +1,5 @@
 use crate::db::load_all_cfds;
-use crate::model::cfd::SettlementProposals;
+use crate::model::cfd::UpdateCfdProposals;
 use crate::model::WalletInfo;
 use crate::wallet::Wallet;
 use anyhow::{Context, Result};
@@ -108,8 +108,8 @@ async fn main() -> Result<()> {
 
     let (order_feed_sender, order_feed_receiver) = watch::channel::<Option<Order>>(None);
     let (wallet_feed_sender, wallet_feed_receiver) = watch::channel::<WalletInfo>(wallet_info);
-    let (settlement_feed_sender, settlement_feed_receiver) =
-        watch::channel::<SettlementProposals>(HashMap::new());
+    let (update_cfd_feed_sender, update_feed_receiver) =
+        watch::channel::<UpdateCfdProposals>(HashMap::new());
 
     let (read, write) = loop {
         let socket = tokio::net::TcpSocket::new_v4()?;
@@ -134,7 +134,7 @@ async fn main() -> Result<()> {
     rocket::custom(figment)
         .manage(order_feed_receiver)
         .manage(wallet_feed_receiver)
-        .manage(settlement_feed_receiver)
+        .manage(update_feed_receiver)
         .manage(quote_updates)
         .attach(Db::init())
         .attach(AdHoc::try_on_ignite(
@@ -182,7 +182,7 @@ async fn main() -> Result<()> {
                     schnorrsig::PublicKey::from_keypair(SECP256K1, &oracle),
                     cfd_feed_sender,
                     order_feed_sender,
-                    settlement_feed_sender,
+                    update_cfd_feed_sender,
                     send_to_maker,
                     monitor_actor_address.clone(),
                     oracle_actor_address,

daemon/src/taker_cfd.rs

@@ -5,7 +5,7 @@ use crate::db::{
 };
 use crate::model::cfd::{
     Cfd, CfdState, CfdStateChangeEvent, CfdStateCommon, Dlc, Order, OrderId, Origin, Role,
-    SettlementKind, SettlementProposals,
+    RollOverProposal, SettlementKind, UpdateCfdProposal, UpdateCfdProposals,
 };
 use crate::model::{OracleEventId, Usd};
 use crate::monitor::{self, MonitorParams};
@@ -33,6 +33,10 @@ pub struct ProposeSettlement {
     pub current_price: Usd,
 }
 
+pub struct ProposeRollOver {
+    pub order_id: OrderId,
+}
+
 pub struct MakerStreamMessage {
     pub item: Result<wire::MakerToTaker>,
 }
@@ -59,13 +63,13 @@ pub struct Actor {
     oracle_pk: schnorrsig::PublicKey,
     cfd_feed_actor_inbox: watch::Sender<Vec<Cfd>>,
     order_feed_actor_inbox: watch::Sender<Option<Order>>,
-    settlements_feed_sender: watch::Sender<SettlementProposals>,
+    update_cfd_feed_sender: watch::Sender<UpdateCfdProposals>,
     send_to_maker: Address<send_to_socket::Actor<wire::TakerToMaker>>,
     monitor_actor: Address<monitor::Actor<Actor>>,
     setup_state: SetupState,
     latest_announcements: Option<BTreeMap<OracleEventId, oracle::Announcement>>,
     oracle_actor: Address<oracle::Actor<Actor, monitor::Actor<Actor>>>,
-    current_settlement_proposals: SettlementProposals,
+    current_pending_proposals: UpdateCfdProposals,
 }
 
 impl Actor {
@@ -76,7 +80,7 @@ impl Actor {
         oracle_pk: schnorrsig::PublicKey,
         cfd_feed_actor_inbox: watch::Sender<Vec<Cfd>>,
         order_feed_actor_inbox: watch::Sender<Option<Order>>,
-        settlements_feed_sender: watch::Sender<SettlementProposals>,
+        update_cfd_feed_sender: watch::Sender<UpdateCfdProposals>,
         send_to_maker: Address<send_to_socket::Actor<wire::TakerToMaker>>,
         monitor_actor: Address<monitor::Actor<Actor>>,
         oracle_actor: Address<oracle::Actor<Actor, monitor::Actor<Actor>>>,
@@ -87,20 +91,20 @@ impl Actor {
             oracle_pk,
             cfd_feed_actor_inbox,
             order_feed_actor_inbox,
-            settlements_feed_sender,
+            update_cfd_feed_sender,
             send_to_maker,
             monitor_actor,
             setup_state: SetupState::None,
             oracle_actor,
             latest_announcements: None,
-            current_settlement_proposals: HashMap::new(),
+            current_pending_proposals: HashMap::new(),
         }
     }
 
-    fn send_current_settlement_proposals(&self) -> Result<()> {
+    fn send_pending_update_proposals(&self) -> Result<()> {
         Ok(self
-            .settlements_feed_sender
-            .send(self.current_settlement_proposals.clone())?)
+            .update_cfd_feed_sender
+            .send(self.current_pending_proposals.clone())?)
     }
 
     async fn handle_take_offer(&mut self, order_id: OrderId, quantity: Usd) -> Result<()> {
@@ -142,7 +146,7 @@ impl Actor {
         let proposal = cfd.calculate_settlement(current_price)?;
 
         if self
-            .current_settlement_proposals
+            .current_pending_proposals
             .contains_key(&proposal.order_id)
         {
             anyhow::bail!(
@@ -151,11 +155,14 @@ impl Actor {
             )
         }
 
-        self.current_settlement_proposals.insert(
+        self.current_pending_proposals.insert(
             proposal.order_id,
-            (proposal.clone(), SettlementKind::Outgoing),
+            UpdateCfdProposal::Settlement {
+                proposal: proposal.clone(),
+                direction: SettlementKind::Outgoing,
+            },
         );
-        self.send_current_settlement_proposals()?;
+        self.send_pending_update_proposals()?;
 
         self.send_to_maker
             .do_send_async(wire::TakerToMaker::ProposeSettlement {
@@ -168,6 +175,34 @@ impl Actor {
         Ok(())
     }
 
+    async fn handle_propose_roll_over(&mut self, order_id: OrderId) -> Result<()> {
+        if self.current_pending_proposals.contains_key(&order_id) {
+            anyhow::bail!("An update for order id {} is already in progress", order_id)
+        }
+
+        let proposal = RollOverProposal {
+            order_id,
+            timestamp: SystemTime::now(),
+        };
+
+        self.current_pending_proposals.insert(
+            proposal.order_id,
+            UpdateCfdProposal::RollOverProposal {
+                proposal: proposal.clone(),
+                direction: SettlementKind::Outgoing,
+            },
+        );
+        self.send_pending_update_proposals()?;
+
+        self.send_to_maker
+            .do_send_async(wire::TakerToMaker::ProposeRollOver {
+                order_id: proposal.order_id,
+                timestamp: proposal.timestamp,
+            })
+            .await?;
+        Ok(())
+    }
+
     async fn handle_new_order(&mut self, order: Option<Order>) -> Result<()> {
         match order {
             Some(mut order) => {
@@ -432,6 +467,13 @@ impl Handler<ProposeSettlement> for Actor {
     }
 }
 
+#[async_trait]
+impl Handler<ProposeRollOver> for Actor {
+    async fn handle(&mut self, msg: ProposeRollOver, _ctx: &mut Context<Self>) {
+        log_error!(self.handle_propose_roll_over(msg.order_id));
+    }
+}
+
 #[async_trait]
 impl Handler<MakerStreamMessage> for Actor {
     async fn handle(
@@ -510,6 +552,10 @@ impl Message for ProposeSettlement {
     type Result = ();
 }
 
+impl Message for ProposeRollOver {
+    type Result = ();
+}
+
 // this signature is a bit different because we use `Address::attach_stream`
 impl Message for MakerStreamMessage {
     type Result = KeepRunning;

daemon/src/to_sse_event.rs

@@ -1,4 +1,4 @@
-use crate::model::cfd::{OrderId, Role, SettlementKind, SettlementProposals};
+use crate::model::cfd::{OrderId, Role, SettlementKind, UpdateCfdProposal, UpdateCfdProposals};
 use crate::model::{Leverage, Position, TradingPair, Usd};
 use crate::{bitmex_price_feed, model};
 use bdk::bitcoin::{Amount, SignedAmount};
@@ -42,6 +42,9 @@ pub enum CfdAction {
     Settle,
     AcceptSettlement,
     RejectSettlement,
+    RollOver,
+    AcceptRollOver,
+    RejectRollOver,
 }
 
 impl<'v> FromParam<'v> for CfdAction {
@@ -66,6 +69,8 @@ pub enum CfdState {
     OpenCommitted,
     IncomingSettlementProposal,
     OutgoingSettlementProposal,
+    IncomingRollOverProposal,
+    OutgoingRollOverProposal,
     MustRefund,
     Refunded,
     SetupFailed,
@@ -100,14 +105,14 @@ pub trait ToSseEvent {
 pub struct CfdsWithAuxData {
     pub cfds: Vec<model::cfd::Cfd>,
     pub current_price: Usd,
-    pub settlement_proposals: SettlementProposals,
+    pub pending_proposals: UpdateCfdProposals,
 }
 
 impl CfdsWithAuxData {
     pub fn new(
         rx_cfds: &watch::Receiver<Vec<model::cfd::Cfd>>,
         rx_quote: &watch::Receiver<bitmex_price_feed::Quote>,
-        rx_settlement: &watch::Receiver<SettlementProposals>,
+        rx_updates: &watch::Receiver<UpdateCfdProposals>,
         role: Role,
     ) -> Self {
         let quote = rx_quote.borrow().clone();
@@ -116,21 +121,14 @@ impl CfdsWithAuxData {
             Role::Taker => quote.for_taker(),
         };
 
-        let settlement_proposals = rx_settlement.borrow().clone();
+        let pending_proposals = rx_updates.borrow().clone();
 
         CfdsWithAuxData {
             cfds: rx_cfds.borrow().clone(),
             current_price,
-            settlement_proposals,
+            pending_proposals,
         }
     }
-
-    /// Check whether given CFD has any active settlement proposals
-    fn settlement_proposal_status(&self, cfd: &model::cfd::Cfd) -> Option<SettlementKind> {
-        self.settlement_proposals
-            .get(&cfd.order.id)
-            .map(|(_, kind)| kind.clone())
-    }
 }
 
 impl ToSseEvent for CfdsWithAuxData {
@@ -151,7 +149,8 @@ impl ToSseEvent for CfdsWithAuxData {
                         (SignedAmount::ZERO, Decimal::ZERO.into())
                     });
 
-                let state = to_cfd_state(&cfd.state, self.settlement_proposal_status(cfd));
+                let pending_proposal = self.pending_proposals.get(&cfd.order.id);
+                let state = to_cfd_state(&cfd.state, pending_proposal);
 
                 Cfd {
                     order_id: cfd.order.id,
@@ -228,11 +227,17 @@ impl ToSseEvent for model::WalletInfo {
 
 fn to_cfd_state(
     cfd_state: &model::cfd::CfdState,
-    proposal_status: Option<SettlementKind>,
+    proposal_status: Option<&UpdateCfdProposal>,
 ) -> CfdState {
     match proposal_status {
-        Some(SettlementKind::Incoming) => CfdState::IncomingSettlementProposal,
-        Some(SettlementKind::Outgoing) => CfdState::OutgoingSettlementProposal,
+        Some(UpdateCfdProposal::Settlement {
+            direction: SettlementKind::Outgoing,
+            ..
+        }) => CfdState::OutgoingSettlementProposal,
+        Some(UpdateCfdProposal::Settlement {
+            direction: SettlementKind::Incoming,
+            ..
+        }) => CfdState::IncomingSettlementProposal,
         None => match cfd_state {
             model::cfd::CfdState::OutgoingOrderRequest { .. } => CfdState::OutgoingOrderRequest,
             model::cfd::CfdState::IncomingOrderRequest { .. } => CfdState::IncomingOrderRequest,
@@ -247,6 +252,14 @@ fn to_cfd_state(
             model::cfd::CfdState::SetupFailed { .. } => CfdState::SetupFailed,
             model::cfd::CfdState::PendingCommit { .. } => CfdState::PendingCommit,
         },
+        Some(UpdateCfdProposal::RollOverProposal {
+            direction: SettlementKind::Outgoing,
+            ..
+        }) => CfdState::OutgoingRollOverProposal,
+        Some(UpdateCfdProposal::RollOverProposal {
+            direction: SettlementKind::Incoming,
+            ..
+        }) => CfdState::IncomingRollOverProposal,
     }
 }
 

daemon/src/wire.rs

@@ -33,6 +33,10 @@ pub enum TakerToMaker {
         #[serde(with = "::bdk::bitcoin::util::amount::serde::as_btc")]
         maker: Amount,
     },
+    ProposeRollOver {
+        order_id: OrderId,
+        timestamp: SystemTime,
+    },
     Protocol(SetupMsg),
 }
 
@@ -42,6 +46,7 @@ impl fmt::Display for TakerToMaker {
             TakerToMaker::TakeOrder { .. } => write!(f, "TakeOrder"),
             TakerToMaker::ProposeSettlement { .. } => write!(f, "ProposeSettlement"),
             TakerToMaker::Protocol(_) => write!(f, "Protocol"),
+            TakerToMaker::ProposeRollOver { .. } => write!(f, "ProposeRollOver"),
         }
     }
 }

frontend/src/MakerApp.tsx

@@ -68,6 +68,9 @@ export default function App() {
     const acceptOrRejectSettlement = cfds.filter((value) =>
         value.state.getGroup() === StateGroupKey.ACCEPT_OR_REJECT_SETTLEMENT
     );
+    const acceptOrRejectRollOvers = cfds.filter((value) =>
+        value.state.getGroup() === StateGroupKey.ACCEPT_OR_REJECT_ROLL_OVER
+    );
     const opening = cfds.filter((value) => value.state.getGroup() === StateGroupKey.OPENING);
     const open = cfds.filter((value) => value.state.getGroup() === StateGroupKey.OPEN);
     const closed = cfds.filter((value) => value.state.getGroup() === StateGroupKey.CLOSED);
@@ -161,6 +164,7 @@ export default function App() {
                     <Tab>Open [{open.length}]</Tab>
                     <Tab>Accept / Reject Order [{acceptOrRejectOrder.length}]</Tab>
                     <Tab>Accept / Reject Settlement [{acceptOrRejectSettlement.length}]</Tab>
+                    <Tab>Accept / Reject Roll Overs [{acceptOrRejectRollOvers.length}]</Tab>
                     <Tab>Opening [{opening.length}]</Tab>
                     <Tab>Closed [{closed.length}]</Tab>
                 </TabList>
@@ -175,6 +179,9 @@ export default function App() {
                     <TabPanel>
                         <CfdTable data={acceptOrRejectSettlement} />
                     </TabPanel>
+                    <TabPanel>
+                        <CfdTable data={acceptOrRejectRollOvers} />
+                    </TabPanel>
                     <TabPanel>
                         <CfdTable data={opening} />
                     </TabPanel>

frontend/src/components/Types.tsx

@@ -77,6 +77,10 @@ export class State {
                 return "Settlement Proposed";
             case StateKey.OUTGOING_SETTLEMENT_PROPOSAL:
                 return "Settlement Proposed";
+            case StateKey.INCOMING_ROLL_OVER_PROPOSAL:
+                return "Rollover Proposed";
+            case StateKey.OUTGOING_ROLL_OVER_PROPOSAL:
+                return "Rollover Proposed";
             case StateKey.MUST_REFUND:
                 return "Refunding";
             case StateKey.REFUNDED:
@@ -109,6 +113,8 @@ export class State {
             case StateKey.INCOMING_ORDER_REQUEST:
             case StateKey.OUTGOING_SETTLEMENT_PROPOSAL:
             case StateKey.INCOMING_SETTLEMENT_PROPOSAL:
+            case StateKey.INCOMING_ROLL_OVER_PROPOSAL:
+            case StateKey.OUTGOING_ROLL_OVER_PROPOSAL:
             case StateKey.CONTRACT_SETUP:
             case StateKey.PENDING_OPEN:
             case StateKey.REFUNDED:
@@ -133,11 +139,15 @@ export class State {
             case StateKey.OPEN_COMMITTED:
             case StateKey.MUST_REFUND:
             case StateKey.OUTGOING_SETTLEMENT_PROPOSAL:
+            case StateKey.OUTGOING_ROLL_OVER_PROPOSAL:
                 return StateGroupKey.OPEN;
 
             case StateKey.INCOMING_SETTLEMENT_PROPOSAL:
                 return StateGroupKey.ACCEPT_OR_REJECT_SETTLEMENT;
 
+            case StateKey.INCOMING_ROLL_OVER_PROPOSAL:
+                return StateGroupKey.ACCEPT_OR_REJECT_ROLL_OVER;
+
             case StateKey.REJECTED:
             case StateKey.REFUNDED:
             case StateKey.SETUP_FAILED:
@@ -153,6 +163,8 @@ export enum Action {
     SETTLE = "settle",
     ACCEPT_SETTLEMENT = "acceptSettlement",
     REJECT_SETTLEMENT = "rejectSettlement",
+    ACCEPT_ROLL_OVER = "acceptRollOver",
+    REJECT_ROLL_OVER = "rejectRollOver",
 }
 
 const enum StateKey {
@@ -167,6 +179,8 @@ const enum StateKey {
     OPEN_COMMITTED = "OpenCommitted",
     OUTGOING_SETTLEMENT_PROPOSAL = "OutgoingSettlementProposal",
     INCOMING_SETTLEMENT_PROPOSAL = "IncomingSettlementProposal",
+    OUTGOING_ROLL_OVER_PROPOSAL = "OutgoingRollOverProposal",
+    INCOMING_ROLL_OVER_PROPOSAL = "IncomingRollOverProposal",
     MUST_REFUND = "MustRefund",
     REFUNDED = "Refunded",
     SETUP_FAILED = "SetupFailed",
@@ -179,6 +193,7 @@ export enum StateGroupKey {
     /// A CFD that is an ongoing open position (on chain)
     OPEN = "Open",
     ACCEPT_OR_REJECT_SETTLEMENT = "Accept / Reject Settlement",
+    ACCEPT_OR_REJECT_ROLL_OVER = "Accept / Reject Roll Over",
     /// A CFD that has been successfully or not-successfully terminated
     CLOSED = "Closed",
 }

frontend/src/components/cfdtables/CfdTable.tsx

@@ -216,6 +216,10 @@ function colorSchemaForAction(action: Action): string {
             return "green";
         case Action.REJECT_SETTLEMENT:
             return "red";
+        case Action.ACCEPT_ROLL_OVER:
+            return "green";
+        case Action.REJECT_ROLL_OVER:
+            return "red";
     }
 }