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<h1><a href="../../index.html">All files</a> / <a href="index.html">src/period</a> index.js</h1>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">/**
* Copyright (c) 2018-present, Leap DAO (leapdao.org)
*
* This source code is licensed under the Mozilla Public License Version 2.0
* found in the LICENSE file in the root directory of this source tree.
*/
const submitPeriod = require('../validator/periods/submitPeriod');
const { logPeriod } = require('../utils/debug');
const getActiveSlots = require('../utils/getActiveSlots');
const getNextSlotToProposeFrom = (periodProposal, bridgeState) => {
const activeSlots = getActiveSlots(bridgeState.currentState.slots);
return (periodProposal.proposerSlotId + 1) % activeSlots.length;
};
module.exports = bridgeState => async (rsp, state, chainInfo) => {
const height = chainInfo.height - 32;
if (height <= 0) {
// genesis height doesn't need check
logPeriod('[checkBridge] Genesis period');
rsp.status = 1;
return;
}
const periodProposal = bridgeState.stalePeriodProposal;
if (!periodProposal) {
logPeriod('[checkBridge] No dragging period submission');
rsp.status = 1;
return;
}
logPeriod('[checkBridge] Pending period submission', periodProposal);
rsp.status = 0;
bridgeState.checkCallsCount += 1;
const { txHash } = periodProposal;
if (
await bridgeState.db.getPeriodDataByBlocksRoot(periodProposal.blocksRoot)
) {
logPeriod('[checkBridge] Found successful submission tx');
bridgeState.stalePeriodProposal = null;
bridgeState.db.setStalePeriodProposal(null);
rsp.status = 1;
return;
}
if (bridgeState.checkCallsCount > 1 && bridgeState.checkCallsCount < 10) {
logPeriod(
`[checkBridge] Waiting for slot ${periodProposal.proposerSlotId} to finish submission`
);
return;
}
bridgeState.checkCallsCount = 1;
const txOpts = {};
if (!txHash) {
// proposer didn't submit period on time, assign another proposer slot
logPeriod(
'[checkBridge] No submission from proposer on time. Submitting from a next slot'
);
periodProposal.proposerSlotId = getNextSlotToProposeFrom(
periodProposal,
bridgeState
);
} else {
// we have txHash in proposal, so submission is either failed or
// stuck in a mempool (underpriced?)
const receipt = await bridgeState.web3.eth.getTransactionReceipt(txHash);
if (!receipt) {
// in a mempool
logPeriod(
'[checkBridge] No receipt yet, probably stuck in a mempool as underpriced. Resubmitting'
);
const tx = await bridgeState.web3.eth.getTransaction(txHash);
txOpts.nonce = tx.nonce;
} else if (!receipt.status) {
// status = 0, tx failed
logPeriod(
'[checkBridge] Found failed submission. Resubmitting from the next slot'
);
periodProposal.proposerSlotId = getNextSlotToProposeFrom(
periodProposal,
bridgeState
);
} else {
// status = 1, tx succeed
logPeriod(
'[checkBridge] Found successful submission tx. Waiting for Submission event to arrive..'
);
rsp.status = 0;
return;
}
}
bridgeState.db.setStalePeriodProposal(periodProposal);
await submitPeriod(periodProposal, bridgeState, txOpts);
};
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