feat(lazer): add feed kind to protocol

Author: Riateche

lazer/publisher_sdk/rust/src/lib.rs

@@ -3,6 +3,7 @@ use crate::publisher_update::{FeedUpdate, FundingRateUpdate, PriceUpdate};
 use crate::state::FeedState;
 use pyth_lazer_protocol::jrpc::{FeedUpdateParams, UpdateParams};
 use pyth_lazer_protocol::symbol_state::SymbolState;
+use pyth_lazer_protocol::FeedKind;
 
 pub mod transaction_envelope {
     pub use crate::protobuf::transaction_envelope::*;
@@ -87,3 +88,21 @@ impl From<SymbolState> for FeedState {
         }
     }
 }
+
+impl From<FeedKind> for protobuf::state::FeedKind {
+    fn from(value: FeedKind) -> Self {
+        match value {
+            FeedKind::Price => protobuf::state::FeedKind::PRICE,
+            FeedKind::FundingRate => protobuf::state::FeedKind::FUNDING_RATE,
+        }
+    }
+}
+
+impl From<protobuf::state::FeedKind> for FeedKind {
+    fn from(value: protobuf::state::FeedKind) -> Self {
+        match value {
+            protobuf::state::FeedKind::PRICE => FeedKind::Price,
+            protobuf::state::FeedKind::FUNDING_RATE => FeedKind::FundingRate,
+        }
+    }
+}

lazer/sdk/rust/protocol/src/feed_kind.rs

@@ -0,0 +1,20 @@
+use {
+    serde::{Deserialize, Serialize},
+    std::fmt::Display,
+};
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub enum FeedKind {
+    Price,
+    FundingRate,
+}
+
+impl Display for FeedKind {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            FeedKind::Price => write!(f, "price"),
+            FeedKind::FundingRate => write!(f, "fundingRate"),
+        }
+    }
+}

lazer/sdk/rust/protocol/src/lib.rs

@@ -2,6 +2,7 @@
 
 pub mod api;
 pub mod binary_update;
+mod feed_kind;
 pub mod jrpc;
 pub mod message;
 pub mod payload;
@@ -13,6 +14,8 @@ pub mod subscription;
 pub mod symbol_state;
 pub mod time;
 
+pub use crate::feed_kind::FeedKind;
+
 #[test]
 fn magics_in_big_endian() {
     use crate::{