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feat: Allow chainsync to start from origin (#56)

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Santiago Carmuega 2022-02-23 19:52:49 -03:00 • committed by GitHub
parent eaa6bcc7e1
commit 3317100f5d
6 changed files with 47 additions and 49 deletions
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19
pallas-miniprotocols/src/chainsync/clients.rs
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@ -52,7 +52,7 @@ where
O: Observer<C>,
{
pub state: State,
pub known_points: Vec<Point>,
pub known_points: Option<Vec<Point>>,
pub intersect: Option<Point>,
pub tip: Option<Tip>,
@ -66,7 +66,7 @@ where
O: Observer<C>,
C: DecodePayload + EncodePayload,
{
pub fn initial(known_points: Vec<Point>, observer: O) -> Self {
pub fn initial(known_points: Option<Vec<Point>>, observer: O) -> Self {
Self {
state: State::Idle,
intersect: None,
@ -80,7 +80,12 @@ where
fn send_find_intersect(self, tx: &impl MachineOutput) -> Transition<Self> {
debug!("requesting find intersect");
let msg = Message::<C>::FindIntersect(self.known_points.clone());
let points = match &self.known_points {
Some(x) => x.clone(),
None => return Err("can't find intersect without known points".into()),
};
let msg = Message::<C>::FindIntersect(points);
tx.send_msg(&msg)?;
@ -189,8 +194,14 @@ where
fn send_next(self, tx: &impl MachineOutput) -> Transition<Self> {
match self.state {
State::Idle => match self.intersect {
// keep going from pointer
Some(_) => self.send_request_next(tx),
None => self.send_find_intersect(tx),
_ => match self.known_points {
// need to find instersection first
Some(_) => self.send_find_intersect(tx),
// start from genesis
None => self.send_request_next(tx),
},
},
_ => panic!("I don't have agency, don't know what to do"),
}