[pythnet-sdk] Bump borsh add borsh to MerklePriceUpdate (#1186)

* Add borsh

* Bump borsh

* Cleanup

* Try

* Cleanup

* Do it

* Add a test

Author: guibescos

pythnet/pythnet_sdk/Cargo.toml

@@ -12,7 +12,7 @@ name = "pythnet_sdk"
 
 [dependencies]
 bincode = "1.3.1"
-borsh = "0.9.1"
+borsh = "0.10.3"
 bytemuck = { version = "1.11.0", features = ["derive"] }
 byteorder = "1.4.3"
 fast-math = "0.1"

pythnet/pythnet_sdk/src/wire.rs

@@ -40,6 +40,10 @@ pub mod v1 {
             hashers::keccak256_160::Keccak160,
             require,
         },
+        borsh::{
+            BorshDeserialize,
+            BorshSerialize,
+        },
         serde::{
             Deserialize,
             Serialize,
@@ -99,7 +103,9 @@ pub mod v1 {
         },
     }
 
-    #[derive(Clone, Debug, Hash, PartialEq, Serialize, Deserialize)]
+    #[derive(
+        Clone, Debug, Hash, PartialEq, Serialize, Deserialize, BorshDeserialize, BorshSerialize,
+    )]
     pub struct MerklePriceUpdate {
         pub message: PrefixedVec<u16, u8>,
         pub proof:   MerklePath<Keccak160>,

pythnet/pythnet_sdk/src/wire/prefixed_vec.rs

@@ -1,15 +1,21 @@
-use serde::{
-    de::DeserializeSeed,
-    ser::{
-        SerializeSeq,
-        SerializeStruct,
+use {
+    borsh::{
+        BorshDeserialize,
+        BorshSerialize,
+    },
+    serde::{
+        de::DeserializeSeed,
+        ser::{
+            SerializeSeq,
+            SerializeStruct,
+        },
+        Deserialize,
+        Serialize,
     },
-    Deserialize,
-    Serialize,
 };
 
 /// PrefixlessVec overrides the serialization to _not_ write a length prefix.
-#[derive(Clone, Debug, Hash, PartialEq, PartialOrd)]
+#[derive(Clone, Debug, Hash, PartialEq, PartialOrd, BorshDeserialize, BorshSerialize)]
 struct PrefixlessVec<T> {
     inner: Vec<T>,
 }
@@ -99,7 +105,7 @@ where
 ///
 /// For non-Pyth formats this results in a struct which is the correct way to interpret our
 /// data on chain anyway.
-#[derive(Clone, Debug, Hash, PartialEq, PartialOrd)]
+#[derive(Clone, Debug, Hash, PartialEq, PartialOrd, BorshDeserialize, BorshSerialize)]
 pub struct PrefixedVec<L, T> {
     __phantom: std::marker::PhantomData<L>,
     data:      PrefixlessVec<T>,
@@ -227,3 +233,13 @@ where
         )
     }
 }
+
+#[test]
+fn test_borsh_roundtrip() {
+    let prefixed_vec = PrefixedVec::<u16, u8>::from(vec![1, 2, 3, 4, 5]);
+    let encoded = borsh::to_vec(&prefixed_vec).unwrap();
+    assert_eq!(encoded, vec![5, 0, 0, 0, 1, 2, 3, 4, 5]);
+
+    let decoded_prefixed_vec = PrefixedVec::<u16, u8>::try_from_slice(encoded.as_slice()).unwrap();
+    assert_eq!(decoded_prefixed_vec, prefixed_vec);
+}

pythnet/pythnet_sdk/src/wormhole.rs

@@ -27,12 +27,14 @@ use {
 };
 
 #[repr(transparent)]
-#[derive(Default)]
+#[derive(Default, PartialEq, Debug)]
 pub struct PostedMessageUnreliableData {
     pub message: MessageData,
 }
 
-#[derive(Debug, Default, BorshSerialize, BorshDeserialize, Clone, Serialize, Deserialize)]
+#[derive(
+    Debug, Default, BorshSerialize, BorshDeserialize, Clone, Serialize, Deserialize, PartialEq,
+)]
 pub struct MessageData {
     pub vaa_version:           u8,
     pub consistency_level:     u8,
@@ -54,22 +56,19 @@ impl BorshSerialize for PostedMessageUnreliableData {
 }
 
 impl BorshDeserialize for PostedMessageUnreliableData {
-    fn deserialize(buf: &mut &[u8]) -> std::io::Result<Self> {
-        if buf.len() < 3 {
-            return Err(Error::new(InvalidData, "Not enough bytes"));
-        }
+    fn deserialize_reader<R: std::io::prelude::Read>(reader: &mut R) -> std::io::Result<Self> {
+        let mut magic = [0u8; 3];
+        reader.read_exact(&mut magic)?;
 
         let expected = b"msu";
-        let magic: &[u8] = &buf[0..3];
-        if magic != expected {
+        if &magic != expected {
             return Err(Error::new(
                 InvalidData,
                 format!("Magic mismatch. Expected {expected:?} but got {magic:?}"),
             ));
         };
-        *buf = &buf[3..];
         Ok(PostedMessageUnreliableData {
-            message: <MessageData as BorshDeserialize>::deserialize(buf)?,
+            message: <MessageData as BorshDeserialize>::deserialize_reader(reader)?,
         })
     }
 }
@@ -99,3 +98,27 @@ impl Clone for PostedMessageUnreliableData {
 pub struct AccumulatorSequenceTracker {
     pub sequence: u64,
 }
+
+#[test]
+fn test_borsh_roundtrip() {
+    let post_message_unreliable_data = PostedMessageUnreliableData {
+        message: MessageData {
+            vaa_version:           1,
+            consistency_level:     2,
+            vaa_time:              3,
+            vaa_signature_account: [4u8; 32],
+            submission_time:       5,
+            nonce:                 6,
+            sequence:              7,
+            emitter_chain:         8,
+            emitter_address:       [9u8; 32],
+            payload:               vec![10u8; 32],
+        },
+    };
+
+
+    let encoded = borsh::to_vec(&post_message_unreliable_data).unwrap();
+
+    let decoded = PostedMessageUnreliableData::try_from_slice(encoded.as_slice()).unwrap();
+    assert_eq!(decoded, post_message_unreliable_data);
+}