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feat(pyth-lazer-publisher-sdk): Add SDK for Publisher Transactions (#2557)
* add proto files * Update proto file and build generated files * Code gen in TS * Update proto file * rename * rename proto fields and re-generate * Update package json scripts and field ids * comment build.rs file * rebase lock file and git ignore generated files * update js generated files * Add turbo build and update proto codegen command * update readme * comment proto file * add prost-types * remove generated files * try using protobuf-codegen * add publisher sdk * remove remaining changes * add pub id * add new pub sdk to workspace * duplicate workspace * remove unnecessary ignores * add caching inputs for turbo * change export of js sdk * remove js publisher sdk * fix publish
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‎.github/workflows/publish-rust-lazer-publisher-sdk.yml‎

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name: Publish Rust package pyth-lazer-publisher-sdk to crates.io
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on:
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push:
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tags:
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- rust-pyth-lazer-publisher-sdk-v*
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jobs:
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publish-pyth-lazer-publisher-sdk:
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name: Publish Rust package pyth-lazer-publisher-sdk to crates.io
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runs-on: ubuntu-latest
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steps:
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- name: Checkout sources
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uses: actions/checkout@v2
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- run: cargo publish --token ${CARGO_REGISTRY_TOKEN}
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env:
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CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
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working-directory: "lazer/publisher-sdk/rust"

‎lazer/Cargo.lock‎

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‎lazer/Cargo.toml‎

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[workspace]
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resolver = "2"
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members = [
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"publisher_sdk/rust",
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"sdk/rust/protocol",
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"sdk/rust/client",
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"contracts/solana/programs/pyth-lazer-solana-contract",

‎lazer/publisher_sdk/proto/publisher_update.proto‎

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syntax = "proto3";
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import "google/protobuf/timestamp.proto";
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package pyth_lazer_transaction;
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// PublisherUpdate contains an array of individual updates and a timestamp
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message PublisherUpdate {
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// Array of updates, each of which target a single feed
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repeated FeedUpdate updates = 1;
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// ID of the Publisher that is sending the update
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// Should match ID stored in Pyth Lazer
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optional uint32 publisher_id = 2;
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// Timestamp when this message was created
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optional google.protobuf.Timestamp publisher_timestamp = 3;
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}
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// Update to a feed. May contain different types of data depending on what kind of update it is
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message FeedUpdate {
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// Feed which the update should be applied to
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// Should match a feed id recognized by PythLazer
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optional uint32 feed_id = 1;
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// Timestamp when this data was first acquired or generated
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optional google.protobuf.Timestamp source_timestamp = 2;
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// one of the valid updates allowed by publishers for a lazer feed
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oneof update {
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PriceUpdate price_update = 3;
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FundingRateUpdate funding_rate_update = 4;
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};
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}
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message PriceUpdate {
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// Price for the symbol as an integer
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// Should be produced with a matching exponent to the configured exponent value in PythLazer
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// May be missing if no price data is available
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optional int64 price = 1;
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// Best Bid Price for the symbol as an integer
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// Should be produced with a matching exponent to the configured exponent value in PythLazer
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// May be missing if no data is available
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optional int64 best_bid_price = 2;
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// Best Ask Price for the symbol as an integer
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// Should be produced with a matching exponent to the configured exponent value in PythLazer
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// May be missing if no data is available
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optional int64 best_ask_price = 3;
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}
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message FundingRateUpdate {
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// Price for which the funding rate applies to
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optional int64 price = 1;
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// Perpetual Future funding rate
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optional int64 rate = 2;
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}

‎lazer/publisher_sdk/proto/pyth_lazer_transaction.proto‎

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syntax = "proto3";
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package pyth_lazer_transaction;
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import "publisher_update.proto";
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// Types of Signatures allowed for signing Lazer Transactions
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enum TransactionSignatureType {
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// signature is 64 bytes long
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ed25519 = 0;
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}
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// Signed lazer transaction payload
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// This is what Pyth Lazer expects as input to the system
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message SignedLazerTransaction {
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// Type and signature should match
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optional TransactionSignatureType signature_type = 1;
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// Signature derived by signing payload with private key
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optional bytes signature = 2;
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// a LazerTransaction message which is already encoded with protobuf as bytes
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// The encoded bytes are what should be signed
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optional bytes payload = 3;
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}
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// Transaction contianing one of the valid Lazer Transactions
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message LazerTransaction {
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oneof payload {
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// Expected transaction sent by Publishers
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// May contain many individual updates to various feeds
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PublisherUpdate publisher_update = 1;
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}
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}

‎lazer/publisher_sdk/rust/Cargo.toml‎

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[package]
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name = "pyth-lazer-publisher-sdk"
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version = "0.1.0"
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edition = "2021"
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description = "Pyth Lazer Publisher SDK types."
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license = "Apache-2.0"
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repository = "https://github.com/pyth-network/pyth-crosschain"
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build = "build.rs"
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[dependencies]
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protobuf = "3.7.2"
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[build-dependencies]
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protobuf-codegen = "3.7.2"

‎lazer/publisher_sdk/rust/build.rs‎

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use std::io::Result;
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/// Automatically runs during cargo build.
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/// Proto files for Lazer are defined in the lazer sdk folder in the proto/ subdirectory.
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/// Both JS and Rust SDKs read the proto files for generating types.
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fn main() -> Result<()> {
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// Tell cargo to recompile if any .proto files change
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println!("cargo:rerun-if-changed=../proto/");
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protobuf_codegen::Codegen::new()
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.pure()
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.include("../proto")
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.input("../proto/publisher_update.proto")
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.input("../proto/pyth_lazer_transaction.proto")
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.cargo_out_dir("protobuf")
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.run_from_script();
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Ok(())
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}

‎lazer/publisher_sdk/rust/src/lib.rs‎

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pub mod transaction {
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pub use crate::protobuf::pyth_lazer_transaction::*;
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}
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mod protobuf {
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include!(concat!(env!("OUT_DIR"), "/protobuf/mod.rs"));
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}

‎lazer/sdk/js/turbo.json‎

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{
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"$schema": "https://turbo.build/schema.json",
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"extends": ["//"],
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"tasks": {
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"build": {
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"dependsOn": ["^build"],
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"outputs": ["dist/**"]
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},
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"build:cjs": {
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"dependsOn": ["build"],
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"outputs": ["dist/cjs/**"]
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},
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"build:esm": {
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"dependsOn": ["build"],
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"outputs": ["dist/esm/**"]
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}
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}
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}

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