feat(solana) : rust sdk (#1303)

* Continue

* Use this

* Try error conversion

* Stop moving

* Fix bug

* Try another version

* Another sdk update

* Clarify errors

* Errors

* Add errors

* Docs

* More unit tests

* Another unit test

Author: guibescos

package-lock.json

@@ -10,5 +10,6 @@ name = "pyth_solana_receiver_state"
 
 [dependencies]
 anchor-lang = ">=0.28.0"
+hex = "*"
 pythnet-sdk = { path = "../../../pythnet/pythnet_sdk"}
 solana-program = "*"

target_chains/solana/Cargo.lock

@@ -0,0 +1,25 @@
+use anchor_lang::error_code;
+
+#[error_code]
+#[derive(PartialEq)]
+pub enum GetPriceError {
+    #[msg("This price feed update's age exceeds the requested maximum age")]
+    PriceTooOld = 10000, // Big number to avoid conflicts with the SDK user's program error codes
+    #[msg("The price feed update doesn't match the requested feed id")]
+    MismatchedFeedId,
+    #[msg("This price feed update has a lower verification level than the one requested")]
+    InsufficientVerificationLevel,
+    #[msg("Feed id must be 32 Bytes, that's 64 hex characters or 66 with a 0x prefix")]
+    FeedIdMustBe32Bytes,
+    #[msg("Feed id contains non-hex characters")]
+    FeedIdNonHexCharacter,
+}
+
+#[macro_export]
+macro_rules! check {
+    ($cond:expr, $err:expr) => {
+        if !$cond {
+            return Err($err);
+        }
+    };
+}

target_chains/solana/pyth_solana_receiver_state/Cargo.toml

@@ -1,6 +1,7 @@
 use anchor_lang::declare_id;
 
 pub mod config;
+pub mod error;
 pub mod price_update;
 
 declare_id!("rec5EKMGg6MxZYaMdyBfgwp4d5rB9T1VQH5pJv5LtFJ");