oceanprotocol/ocean.js
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create a generic estimateGas() function

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This commit is contained in:
Miquel A. Cabot 2022-04-04 09:37:30 +02:00
parent 0735a4b4e3
commit f34573be44
1 changed files with 26 additions and 64 deletions
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90
src/utils/TokenUtils.ts
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@ -8,34 +8,31 @@ import Web3 from 'web3'
import { GASLIMIT_DEFAULT } from '.' import { GASLIMIT_DEFAULT } from '.'
/** /**
* Estimate gas cost for approval function * Estimates the gas used when a function would be executed on chain
* @param {String} account * @param {Contract} tokenContract token contract instance
* @param {String} tokenAddress * @param {string} from account that calls the function
* @param {String} spender * @param {string} functionSignature signature of the function
* @param {String} amount * @param {...any[]} args arguments of the function
* @param {String} force * @return {Promise<number>} gas cost of the function
* @param {Contract} contractInstance optional contract instance
* @return {Promise<number>}
*/ */
export async function estApprove( export async function estimateGas(
web3: Web3, tokenContract: Contract,
account: string, from: string,
tokenAddress: string, functionSignature: string,
spender: string, ...args: any[]
amount: string,
contractInstance?: Contract
): Promise<number> { ): Promise<number> {
const tokenContract = contractInstance || new web3.eth.Contract(minAbi, tokenAddress)
const gasLimitDefault = GASLIMIT_DEFAULT const gasLimitDefault = GASLIMIT_DEFAULT
let estGas let estGas
try { try {
estGas = await tokenContract.methods estGas = await tokenContract.methods[functionSignature].apply(null, args).estimateGas(
.approve(spender, amount) {
.estimateGas({ from: account }, (err, estGas) => (err ? gasLimitDefault : estGas)) from: from
},
(err, estGas) => (err ? gasLimitDefault : estGas)
)
} catch (e) { } catch (e) {
estGas = gasLimitDefault estGas = gasLimitDefault
LoggerInstance.error('estimate gas failed for approve!', e) LoggerInstance.error(`ERROR: Estimate gas failed for ${functionSignature}!`, e)
} }
return estGas return estGas
} }
@ -65,13 +62,12 @@ export async function approve(
} }
let result = null let result = null
const amountFormatted = await amountToUnits(web3, tokenAddress, amount) const amountFormatted = await amountToUnits(web3, tokenAddress, amount)
const estGas = await estApprove( const estGas = await estimateGas(
web3, tokenContract,
account, account,
tokenAddress, 'approve(address,uint256)',
spender, spender,
amountFormatted, amountFormatted
tokenContract
) )
try { try {
@ -88,39 +84,6 @@ export async function approve(
return result return result
} }
/**
* Estimate gas cost for transfer function
* @param {String} account
* @param {String} tokenAddress
* @param {String} recipient
* @param {String} amount
* @param {String} force
* @param {Contract} contractInstance optional contract instance
* @return {Promise<number>}
*/
export async function estTransfer(
web3: Web3,
account: string,
tokenAddress: string,
recipient: string,
amount: string,
contractInstance?: Contract
): Promise<number> {
const tokenContract = contractInstance || new web3.eth.Contract(minAbi, tokenAddress)
const gasLimitDefault = GASLIMIT_DEFAULT
let estGas
try {
estGas = await tokenContract.methods
.transfer(recipient, amount)
.estimateGas({ from: account }, (err, estGas) => (err ? gasLimitDefault : estGas))
} catch (e) {
estGas = gasLimitDefault
LoggerInstance.error('estimate gas failed for approve!', e)
}
return estGas
}
/** /**
* Moves amount tokens from the caller’s account to recipient. * Moves amount tokens from the caller’s account to recipient.
* @param {String} account * @param {String} account
@ -140,13 +103,12 @@ export async function transfer(
let result = null let result = null
const amountFormatted = await amountToUnits(web3, tokenAddress, amount) const amountFormatted = await amountToUnits(web3, tokenAddress, amount)
const estGas = await estTransfer( const estGas = await estimateGas(
web3, tokenContract,
account, account,
tokenAddress, 'transfer(address,uint256)',
recipient, recipient,
amountFormatted, amountFormatted
tokenContract
) )
try { try {