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[hermes] Add get_price_feed endpoint #883

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Merged
merged 1 commit into from
Jun 13, 2023
Merged

[hermes] Add get_price_feed endpoint #883

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1 change: 1 addition & 0 deletions hermes/src/api.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,7 @@ pub async fn run(store: Arc<Store>, mut update_rx: Receiver<()>, rpc_addr: Strin
.route("/ws", get(ws::ws_route_handler))
.route("/api/latest_price_feeds", get(rest::latest_price_feeds))
.route("/api/latest_vaas", get(rest::latest_vaas))
.route("/api/get_price_feed", get(rest::get_price_feed))
.route("/api/get_vaa", get(rest::get_vaa))
.route("/api/get_vaa_ccip", get(rest::get_vaa_ccip))
.route("/api/price_feed_ids", get(rest::price_feed_ids))
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41 changes: 39 additions & 2 deletions hermes/src/api/rest.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -125,6 +125,42 @@ pub async fn latest_price_feeds(
))
}

#[derive(Debug, serde::Deserialize)]
pub struct GetPriceFeedQueryParams {
id: PriceIdInput,
publish_time: UnixTimestamp,
#[serde(default)]
verbose: bool,
#[serde(default)]
binary: bool,
}

pub async fn get_price_feed(
State(state): State<super::State>,
QsQuery(params): QsQuery<GetPriceFeedQueryParams>,
) -> Result<Json<RpcPriceFeed>, RestError> {
let price_id: PriceIdentifier = params.id.into();

let price_feeds_with_update_data = state
.store
.get_price_feeds_with_update_data(
vec![price_id],
RequestTime::FirstAfter(params.publish_time),
)
.await
.map_err(|_| RestError::UpdateDataNotFound)?;

Ok(Json(RpcPriceFeed::from_price_feed_update(
price_feeds_with_update_data
.price_feeds
.into_iter()
.next()
.ok_or(RestError::UpdateDataNotFound)?,
params.verbose,
params.binary,
)))
}

#[derive(Debug, serde::Deserialize)]
pub struct GetVaaQueryParams {
id: PriceIdInput,
Expand All @@ -133,9 +169,9 @@ pub struct GetVaaQueryParams {

#[derive(Debug, serde::Serialize)]
pub struct GetVaaResponse {
pub vaa: String,
vaa: String,
#[serde(rename = "publishTime")]
pub publish_time: UnixTimestamp,
publish_time: UnixTimestamp,
}

pub async fn get_vaa(
Expand Down Expand Up @@ -228,6 +264,7 @@ pub async fn index() -> impl IntoResponse {
"/api/price_feed_ids",
"/api/latest_price_feeds?ids[]=<price_feed_id>&ids[]=<price_feed_id_2>&..(&verbose=true)(&binary=true)",
"/api/latest_vaas?ids[]=<price_feed_id>&ids[]=<price_feed_id_2>&...",
"/api/get_price_feed?id=<price_feed_id>&publish_time=<publish_time_in_unix_timestamp>(&verbose=true)(&binary=true)",
"/api/get_vaa?id=<price_feed_id>&publish_time=<publish_time_in_unix_timestamp>",
"/api/get_vaa_ccip?data=<0x<price_feed_id_32_bytes>+<publish_time_unix_timestamp_be_8_bytes>>",
])
Expand Down