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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| import abi from '../ethereum/ethereum.abi.json'; | ||
| import { logger } from '../../services/logger'; | ||
| import { Contract, Transaction, Wallet } from 'ethers'; | ||
| import { EthereumBase } from '../ethereum/ethereum-base'; | ||
| import { getEthereumConfig as getCeloConfig } from '../ethereum/ethereum.config'; | ||
| import { Provider } from '@ethersproject/abstract-provider'; | ||
| import { Ethereumish } from '../../services/common-interfaces'; | ||
| import { ConfigManagerV2 } from '../../services/config-manager-v2'; | ||
| import { EVMController } from '../ethereum/evm.controllers'; | ||
| import { UniswapConfig } from '../../connectors/uniswap/uniswap.config'; | ||
|
|
||
| export class Celo extends EthereumBase implements Ethereumish { | ||
| private static _instances: { [name: string]: Celo }; | ||
| private _gasPrice: number; | ||
| private _gasPriceRefreshInterval: number | null; | ||
| private _nativeTokenSymbol: string; | ||
| private _chain: string; | ||
| public controller; | ||
|
|
||
| private constructor(network: string) { | ||
| const config = getCeloConfig('celo', network); | ||
| super( | ||
| 'celo', | ||
| config.network.chainID, | ||
| config.network.nodeURL, | ||
| config.network.tokenListSource, | ||
| config.network.tokenListType, | ||
| config.manualGasPrice, | ||
| config.gasLimitTransaction, | ||
| ConfigManagerV2.getInstance().get('server.nonceDbPath'), | ||
| ConfigManagerV2.getInstance().get('server.transactionDbPath') | ||
| ); | ||
| this._chain = config.network.name; | ||
| this._nativeTokenSymbol = config.nativeCurrencySymbol; | ||
|
|
||
| this._gasPrice = config.manualGasPrice; | ||
|
|
||
| this._gasPriceRefreshInterval = | ||
| config.network.gasPriceRefreshInterval !== undefined | ||
| ? config.network.gasPriceRefreshInterval | ||
| : null; | ||
|
|
||
| this.updateGasPrice(); | ||
| this.controller = EVMController; | ||
| } | ||
|
|
||
| public static getInstance(network: string): Celo { | ||
| if (Celo._instances === undefined) { | ||
| Celo._instances = {}; | ||
| } | ||
| if (!(network in Celo._instances)) { | ||
| Celo._instances[network] = new Celo(network); | ||
| } | ||
|
|
||
| return Celo._instances[network]; | ||
| } | ||
|
|
||
| public static getConnectedInstances(): { [name: string]: Celo } { | ||
| return Celo._instances; | ||
| } | ||
|
|
||
| // getters | ||
|
|
||
| public get gasPrice(): number { | ||
| return this._gasPrice; | ||
| } | ||
|
|
||
| public get nativeTokenSymbol(): string { | ||
| return this._nativeTokenSymbol; | ||
| } | ||
|
|
||
| public get chain(): string { | ||
| return this._chain; | ||
| } | ||
|
|
||
| getContract(tokenAddress: string, signerOrProvider?: Wallet | Provider) { | ||
| return new Contract(tokenAddress, abi.ERC20Abi, signerOrProvider); | ||
| } | ||
|
|
||
| getSpender(reqSpender: string): string { | ||
| let spender: string; | ||
| if (reqSpender === 'uniswap') { | ||
| spender = UniswapConfig.config.uniswapV3SmartOrderRouterAddress( | ||
| 'celo', | ||
| this._chain, | ||
| ); | ||
| } else if (reqSpender === 'uniswapLP') { | ||
| spender = UniswapConfig.config.uniswapV3NftManagerAddress('celo', this._chain); | ||
| } else { | ||
| spender = reqSpender; | ||
| } | ||
| return spender; | ||
| } | ||
|
|
||
| // cancel transaction | ||
| async cancelTx(wallet: Wallet, nonce: number): Promise<Transaction> { | ||
| logger.info( | ||
| 'Canceling any existing transaction(s) with nonce number ' + nonce + '.' | ||
| ); | ||
| return super.cancelTxWithGasPrice(wallet, nonce, this._gasPrice * 2); | ||
| } | ||
|
|
||
| /** | ||
| * Automatically update the prevailing gas price on the network. | ||
| */ | ||
| async updateGasPrice(): Promise<void> { | ||
| if (this._gasPriceRefreshInterval === null) { | ||
| return; | ||
| } | ||
|
|
||
| const gasPrice = await this.getGasPrice(); | ||
| if (gasPrice !== null) { | ||
| this._gasPrice = gasPrice; | ||
| } else { | ||
| logger.info('gasPrice is unexpectedly null.'); | ||
| } | ||
|
|
||
| setTimeout( | ||
| this.updateGasPrice.bind(this), | ||
| this._gasPriceRefreshInterval * 1000 | ||
| ); | ||
| } | ||
|
|
||
| async close() { | ||
| await super.close(); | ||
| if (this._chain in Celo._instances) { | ||
| delete Celo._instances[this._chain]; | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| import { | ||
| mkRequestValidator, | ||
| mkValidator, | ||
| RequestValidator, | ||
| Validator, | ||
| validateAmount, | ||
| validateToken, | ||
| validateTokenSymbols, | ||
| } from '../../services/validators'; | ||
| import { | ||
| isAddress, | ||
| validateNonce, | ||
| validateAddress, | ||
| } from '../ethereum/ethereum.validators'; | ||
|
|
||
| export const invalidSpenderError: string = | ||
| 'The spender param is not a valid Celo address (0x followed by 40 hexidecimal characters).'; | ||
|
|
||
| // given a request, look for a key called spender that is 'uniswap' or an Ethereum address | ||
| export const validateSpender: Validator = mkValidator( | ||
| 'spender', | ||
| invalidSpenderError, | ||
|
|
||
| (val) => | ||
| typeof val === 'string' && | ||
| (val === 'uniswap' || | ||
| val === 'uniswapLP' || | ||
| isAddress(val)) | ||
| ); | ||
|
|
||
| export const validateCeloApproveRequest: RequestValidator = | ||
| mkRequestValidator([ | ||
| validateAddress, | ||
| validateSpender, | ||
| validateToken, | ||
| validateAmount, | ||
| validateNonce, | ||
| ]); | ||
|
|
||
| export const validateCeloAllowancesRequest: RequestValidator = | ||
| mkRequestValidator([validateAddress, validateSpender, validateTokenSymbols]); |
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