Update SDK for terra contract (#44)

* Update SDK for terra contract

- Updates readme and docs according to the new price feed data format

- Adds AsRef and some other traits to Identifier

Author: ali-behjati

examples/terra-contract/README.md

@@ -25,8 +25,8 @@ npm run query -- --network testnet --contract terra1fm4ssxq39m355pdv2wzxggf5uxs2
 If the query is successful, the output should look like:
 ```
 {
-  current_price: { price: 8704350000, conf: 3150000, expo: -8 },
-  ema_price: { price: 8665158600, conf: 2965370, expo: -8 }
+  current_price: { price: "8704350000", conf: "3150000", expo: -8 },
+  ema_price: { price: "8665158600", conf: "2965370", expo: -8 }
 }
 ```
 

examples/terra-contract/src/contract.rs

@@ -51,7 +51,7 @@ pub fn instantiate(
 
     Ok(Response::new()
         .add_attribute("method", "instantiate")
-        .add_attribute("price_id", format!("{:#x?}", msg.price_feed_id)))
+        .add_attribute("price_id", format!("{}", msg.price_feed_id)))
 }
 
 #[cfg_attr(not(feature = "library"), entry_point)]

examples/terra-contract/tools/deploy.js

@@ -181,7 +181,7 @@ if (argv.instantiate) {
   }
 
   const contractAddress = await instantiate(codeId, {
-    price_feed_id: Array.from(Buffer.from(pythPriceFeedId, "hex")),
+    price_feed_id: pythPriceFeedId,
     pyth_contract_addr: pythContractAddress
   });
 

pyth-sdk-terra/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pyth-sdk-terra"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["Pyth Data Foundation"]
 edition = "2018"
 license = "Apache-2.0"
@@ -14,7 +14,7 @@ readme = "README.md"
 cosmwasm-std = { version = "0.16.0" }
 cosmwasm-storage = { version = "0.16.0" }
 serde = { version = "1.0.136", features = ["derive"] }
-pyth-sdk = { path = "../pyth-sdk", version = "0.4.0" }
+pyth-sdk = { path = "../pyth-sdk", version = "0.4.1" }
 schemars = "0.8.1"
 
 [dev-dependencies]

pyth-sdk-terra/README.md

@@ -22,7 +22,7 @@ Simply call the `query_price_feed` function in your Terra contract with a price
 // Pyth network testnet contract address
 pyth_contract_addr: string = "terra1hdc8q4ejy82kd9w7wj389dlul9z5zz9a36jflh";
 // Price feed id for BTC/USD on testnet
-price_feed_id: string = "0xf9c0172ba10dfa4d19088d94f5bf61d3b54d5bd7483a322a982e1373ee8ea31b";
+price_feed_id = PriceIdentifier::from_hex("f9c0172ba10dfa4d19088d94f5bf61d3b54d5bd7483a322a982e1373ee8ea31b");
 
 let price_feed: PriceFeed = query_price_feed(deps.querier, pyth_contract_addr, price_feed_id)?.price_feed;
 let current_price: Price = price_feed.get_current_price().ok_or_else(|| StdError::not_found("price is not currently available"))?;
@@ -43,7 +43,7 @@ A typical query will look like:
 ```
 {
     "price_feed": {
-        "id": [249, 192, 23, ..., 163, 27] // id of the price feed as an array of bytes
+        "id": "f9c0172ba10dfa4d19088d94f5bf61d3b54d5bd7483a322a982e1373ee8ea31b" // id of the price feed (in hex format)
     }
 }
 ```

pyth-sdk/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pyth-sdk"
-version = "0.4.0"
+version = "0.4.1"
 authors = ["Pyth Data Foundation"]
 edition = "2018"
 license = "Apache-2.0"

pyth-sdk/src/lib.rs

@@ -18,6 +18,9 @@ pub use price::Price;
     Default,
     PartialEq,
     Eq,
+    PartialOrd,
+    Ord,
+    Hash,
     BorshSerialize,
     BorshDeserialize,
     serde::Serialize,
@@ -63,6 +66,11 @@ impl fmt::Display for Identifier {
     }
 }
 
+impl AsRef<[u8]> for Identifier {
+    fn as_ref(&self) -> &[u8] {
+        &self.0[..]
+    }
+}
 
 /// Consists of 32 bytes and it is currently based on largest Public Key size on various
 /// blockchains.