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CROS-177: add getEstimatedGasFee #47

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CROS-177: add getEstimatedGasFee #47

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d1be7d5
add getEstimatedGasFee
May 14, 2023
e1e8e34
refine the way of calculating gas fee
May 28, 2023
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22 changes: 22 additions & 0 deletions clients/contracts/bridge.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -58,8 +58,11 @@ function hexcmp(x: string, y: string) {
}

export class BridgeContract extends DelphinusContract {
private readonly web3: DelphinusWeb3;

constructor(web3: DelphinusWeb3, address: string, account?: string) {
super(web3, BridgeContract.getJsonInterface(), address, account);
this.web3 = web3;
}

static getJsonInterface(): any {
Expand All @@ -82,6 +85,25 @@ export class BridgeContract extends DelphinusContract {
return this.getWeb3Contract().methods.addToken(tokenid).send();
}

async getEstimatedGasFee(calldata: number[], verifydata: BN[], vid: number, rid: BN) {
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@yymone yymone Jun 30, 2023

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This is for verify only so the name is not good enough.

const gasPrice = await this.web3.web3Instance.eth.getGasPrice();
console.log("The gas price is", gasPrice, "wei");
const tx = this.getWeb3Contract().methods.verify(
calldata,
verifydata,
vid,
rid
);
return tx.estimateGas()
.then((estimatedGas: number) => {
console.log("The estimated gas is", estimatedGas);
return estimatedGas * Number(gasPrice);
})
.catch((e: any) => {
console.log("%s", e);
});
}

private _verify(calldata: number[], verifydata: BN[], vid: number, rid: BN) {
const tx = this.getWeb3Contract().methods.verify(
calldata,
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