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feat(pool): add cumulative fee factor #167

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feat(pool): add cumulative fee factor #167

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2 changes: 2 additions & 0 deletions schema.graphql
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Original file line number Diff line number Diff line change
Expand Up @@ -133,6 +133,8 @@ type Pool @entity {
rewardCut: BigInt!
"Transcoder's fee share during the earnings pool's round"
feeShare: BigInt!
"Cumulative fee factor for delegator fees calculation"
cumulativeFeeFactor: BigDecimal
}

"""
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14 changes: 13 additions & 1 deletion src/mappings/ticketBroker.ts
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Expand Up @@ -10,6 +10,7 @@ import {
createOrLoadTranscoderDay,
getBlockNum,
getEthPriceUsd,
integerFromString,
makeEventId,
makePoolId,
ZERO_BD,
Expand All @@ -29,6 +30,9 @@ import {
WinningTicketRedeemed,
Withdrawal,
} from "../types/TicketBroker/TicketBroker";
import {
BondingManager,
} from "../types/BondingManager/BondingManager";

export function winningTicketRedeemed(event: WinningTicketRedeemed): void {
let round = createOrLoadRound(getBlockNum());
Expand Down Expand Up @@ -97,9 +101,17 @@ export function winningTicketRedeemed(event: WinningTicketRedeemed): void {
protocol.winningTicketCount = protocol.winningTicketCount + 1;
protocol.save();

// update the transcoder pool fees
// update the transcoder pool fees and cummulative factors
if (pool) {
pool.fees = pool.fees.plus(faceValue);

let bondingManager = BondingManager.bind(event.address);
let earningsPool = bondingManager.getTranscoderEarningsPoolForRound(
Address.fromString(transcoder.id),
integerFromString(round.id)
);
pool.cumulativeFeeFactor = convertToDecimal(earningsPool.cumulativeFeeFactor);

pool.save();
}

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