Liquidity oracle

pyth-sdk/Cargo.toml

@@ -19,6 +19,7 @@ borsh = "0.9"
 borsh-derive = "0.9.0"
 serde = { version = "1.0.136", features = ["derive"] }
 schemars = "0.8.8"
+thiserror = "1.0.24"
 
 [dev-dependencies]
 serde_json = "1.0.79"

pyth-sdk/src/error.rs

@@ -0,0 +1,17 @@
+use thiserror::Error;
+
+#[derive(Error, Debug, Copy, Clone, PartialEq)]
+pub enum OracleError {
+    #[error("initial endpoint should not be greater than or equal to final endpoint")]
+    InitialEndpointExceedsFinalEndpoint,
+    #[error("initial discount should not exceed final discount, for collateral valuation")]
+    InitialDiscountExceedsFinalDiscount,
+    #[error("final discount rate should not be greater than the discount precision")]
+    FinalDiscountExceedsPrecision,
+    #[error("initial premium should not exceed final premium, for borrow valuation")]
+    InitialPremiumExceedsFinalPremium,
+    #[error("None encountered")]
+    NoneEncountered,
+    #[error("i64 try from error")]
+    I64ConversionError,
+}

pyth-sdk/src/lib.rs

@@ -8,6 +8,7 @@ use schemars::JsonSchema;
 use std::fmt;
 
 pub mod utils;
+pub mod error;
 
 mod price;
 pub use price::Price;