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program: increase stable coin oracle threshold #1526

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8510a35
program: increase stable coin oracle threshold
0xbigz Mar 12, 2025
601d8ff
cargo fmt --
crispheaney Mar 13, 2025
ddaf223
CHANGELOG
crispheaney Mar 13, 2025
98eb352
Merge branch 'master' into bigz/inc-stable-oracle-source-threshold
0xbigz Apr 17, 2025
2a86042
sdk: update getStableCoinPrice
0xbigz Apr 17, 2025
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2 changes: 2 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

### Features

- program: increase stable coin oracle threshold ([#1526](https://github.com/drift-labs/protocol-v2/pull/1526))

### Fixes

### Breaking
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6 changes: 4 additions & 2 deletions programs/drift/src/state/oracle.rs
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Expand Up @@ -321,9 +321,11 @@ pub fn get_pyth_stable_coin_price(

let price = oracle_price_data.price;
let confidence = oracle_price_data.confidence;
let five_bps = 500_i64;
let twenty_bps = 2000_i64;

if price.safe_sub(PRICE_PRECISION_I64)?.abs() <= five_bps.min(confidence.cast()?) {
if price.safe_sub(PRICE_PRECISION_I64)?.abs()
<= twenty_bps.min(confidence.cast::<i64>()?.saturating_mul(5))
{
oracle_price_data.price = PRICE_PRECISION_I64;
}

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9 changes: 7 additions & 2 deletions sdk/src/oracles/pythClient.ts
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Expand Up @@ -75,9 +75,14 @@ function convertPythPrice(price: number, exponent: number, multiple: BN): BN {
.div(pythPrecision);
}

const fiveBPS = new BN(500);
const twentyBPS = new BN(2000);
function getStableCoinPrice(price: BN, confidence: BN): BN {
if (price.sub(QUOTE_PRECISION).abs().lt(BN.min(confidence, fiveBPS))) {
if (
price
.sub(QUOTE_PRECISION)
.abs()
.lt(BN.min(confidence.muln(5), twentyBPS))
) {
return QUOTE_PRECISION;
} else {
return price;
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