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fix: use relay total supply constant for AH APY calculation

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Kurdistan Tech Ministry
2026-02-18 06:04:21 +03:00
parent a7d11ce6a2
commit b4e765ee50
1 changed files with 13 additions and 5 deletions
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src/mappings/PoolStakers.ts
+13 -5
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@@ -168,8 +168,16 @@ function calculateYearlyInflation(stakedPortion: number): number {
}
async function computeAndSaveAPY(): Promise<void> {
const totalIssuance = ((await api.query.balances.totalIssuance()) as any).toBigInt();
if (totalIssuance === BigInt(0)) return;
// Total issuance must come from the relay chain (200M+ HEZ), not AH (7M HEZ).
// AH's balances.totalIssuance only reflects tokens teleported to AH.
// We use staking.erasTotalStake as a proxy: totalStaked is known, and we
// can derive totalIssuance from relay's staking.erasValidatorReward ratio.
// But simplest: read relay's totalIssuance via the staking pallet's
// erasValidatorReward / erasRewardPoints to approximate, OR use a known
// total supply constant.
//
// Pezkuwi total supply ~200M HEZ. For accurate APY we use this.
const TOTAL_SUPPLY = BigInt("200004200000000000000"); // ~200M HEZ in planck
const activeEraOpt = (await api.query.staking.activeEra()) as Option<any>;
if (activeEraOpt.isNone) return;
@@ -199,9 +207,9 @@ async function computeAndSaveAPY(): Promise<void> {
validators[i].commission = p.commission ? Number(p.commission.toString()) / PERBILL_DIVISOR : 0;
}
// Calculate APY
// Calculate APY using relay total supply
const SCALE = BigInt(1_000_000_000);
const stakedPortion = Number((totalStaked * SCALE) / totalIssuance) / Number(SCALE);
const stakedPortion = Number((totalStaked * SCALE) / TOTAL_SUPPLY) / Number(SCALE);
const yearlyInflation = calculateYearlyInflation(stakedPortion);
const avgRewardPct = yearlyInflation / stakedPortion;
const avgStake = totalStaked / BigInt(validators.length);
@@ -222,7 +230,7 @@ async function computeAndSaveAPY(): Promise<void> {
const ahPoolApyId = `${PEZKUWI_ASSET_HUB_GENESIS}-${STAKING_TYPE_NOMINATION_POOL}`;
await StakingApy.create({ id: ahPoolApyId, networkId: PEZKUWI_ASSET_HUB_GENESIS, stakingType: STAKING_TYPE_NOMINATION_POOL, maxAPY }).save();
logger.info(`AH APY: ${(maxAPY * 100).toFixed(2)}% from ${validators.length} validators, era ${currentEra}`);
logger.info(`AH APY: ${(maxAPY * 100).toFixed(2)}% from ${validators.length} validators, era ${currentEra}, stakedPortion=${(stakedPortion*100).toFixed(2)}%`);
}
/**