https://github.com/magicblock-labs/real-time-pricing-oracle
Low latency pricing oracle for ephemeral rollups
https://github.com/magicblock-labs/real-time-pricing-oracle
Last synced: about 1 year ago
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Low latency pricing oracle for ephemeral rollups
- Host: GitHub
- URL: https://github.com/magicblock-labs/real-time-pricing-oracle
- Owner: magicblock-labs
- Created: 2025-01-11T09:35:29.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2025-06-22T00:39:31.000Z (about 1 year ago)
- Last Synced: 2025-06-22T01:30:59.690Z (about 1 year ago)
- Language: Rust
- Homepage:
- Size: 268 KB
- Stars: 13
- Watchers: 2
- Forks: 4
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Real-time Pricing Oracle
This repository contains a Solana program designed to inject price feeds into ephemeral rollups. It includes a chain pusher that subscribes to and posts price updates on-chain, as well as an example of how to consume price data in a Solana program.
Currently supports:
- [Pyth Lazer](https://docs.pyth.network/lazer)
- [Stork price feeds](https://www.stork.network/)
## Overview
The project is structured as follows:
- Solana Program: A program that allow to create and update price feeds in the ephemeral rollups.
- Chain Pusher: A component that subscribes to price updates from a price feed and posts these updates on-chain.
- Example Consumer: An example demonstrating how to consume and utilize the price data within a Solana program.
## Running the chain pusher
```bash
cargo run -- --auth_header "Bearer " --ws_url "ws_url" --cluster "https://devnet.magicblock.app"
```
## Consuming Price Data in a Solana Program
1. Add pyth sdk
```bash
cargo add pyth_solana_receiver_sdk
```
2. Define the instruction context, passing the account as AccountInfo
```rust
#[derive(Accounts)]
pub struct Sample<'info> {
#[account(mut)]
pub payer: Signer<'info>,
/// CHECK: the correct price feed
pub price_update: AccountInfo<'info>,
}
```
3. Deserialize and use the price data
```rust
pub fn sample(ctx: Context) -> Result<()> {
// Deserialize the price feed
let price_update = PriceUpdateV2::try_deserialize_unchecked
(&mut (*ctx.accounts.price_update.data.borrow()).as_ref(),
).map_err(Into::::into)?;
// get_price_no_older_than will fail if the price update is more than 30 seconds old
let maximum_age: u64 = 60;
// Get the price feed id
let feed_id: [u8; 32] = ctx.accounts.price_update.key().to_bytes();
msg!("The price update is: {}", price_update.price_message.price);
let price = price_update.get_price_no_older_than(&Clock::get()?, maximum_age, &feed_id)?;
// Sample output:
// The price is (7160106530699 ± 5129162301) * 10^-8
msg!("The price is ({} ± {}) * 10^{}", price.price, price.conf, price.exponent);
msg!("The price is: {}", price.price as f64 * 10_f64.powi(price.exponent));
Ok(())
}
```
- [programs/ephemeral-oracle/programs/ephemeral-oracle/src/lib.rs](programs/ephemeral-oracle/programs/ephemeral-oracle/src/lib.rs)
## Example Price Feeds
| Asset Pair | Feed Provider | Address |
|------------|---------------|--------------------------------------------------|
| SOL/USD | Pyth Lazer | [ENYwebBThHzmzwPLAQvCucUTsjyfBSZdD9ViXksS4jPu](https://explorer.solana.com/address/ENYwebBThHzmzwPLAQvCucUTsjyfBSZdD9ViXksS4jPu?cluster=custom&customUrl=https%3A%2F%2Fdevnet.magicblock.app) |
| BTC/USD | Pyth Lazer | [71wtTRDY8Gxgw56bXFt2oc6qeAbTxzStdNiC425Z51sr](https://explorer.solana.com/address/71wtTRDY8Gxgw56bXFt2oc6qeAbTxzStdNiC425Z51sr?cluster=custom&customUrl=https%3A%2F%2Fdevnet.magicblock.app) |
| ETH/USD | Pyth Lazer | [5vaYr1hpv8yrSpu8w3K95x22byYxUJCCNCSYJtqVWPvG](https://explorer.solana.com/address/5vaYr1hpv8yrSpu8w3K95x22byYxUJCCNCSYJtqVWPvG?cluster=custom&customUrl=https%3A%2F%2Fdevnet.magicblock.app) |
| USDC/USD | Pyth Lazer | [Ekug3x6hs37Mf4XKCDptvRVCSCjJCAD7LKmKQXBAa541](https://explorer.solana.com/address/Ekug3x6hs37Mf4XKCDptvRVCSCjJCAD7LKmKQXBAa541?cluster=custom&customUrl=https%3A%2F%2Fdevnet.magicblock.app) |
## Demo
https://realtime-price-tracker.vercel.app/
### Subcribe to a price feed
Connect:
```bash
wscat -c "wss://devnet.magicblock.app"
```
Subscribe:
```bash
{"jsonrpc":"2.0","id":1,"method":"accountSubscribe","params":["ENYwebBThHzmzwPLAQvCucUTsjyfBSZdD9ViXksS4jPu",{"encoding":"jsonParsed","commitment":"confirmed"}]}
```