mo9527 / OfflineSignProvider

Custom Ethereum web3 provider to facilitate separation of business layer and wallet layer

OfflineSignProvider

This is a customized Ethereum web3-provider to facilitate separation of business layer and wallet layer

Install

$ npm install libra-offlinesign-provider

General Usage

You can use this provider wherever a Web3 provider is needed.

const config = require('../config');
var Web3 = require('web3');
var nodeUrl = 'http://127.0.0.1:8545';

var web3 = new Web3(new Web3.providers.HttpProvider(nodeUrl));

var abi = require("./contract.json");
var TruffleContract = require("truffle-contract");

var signServiceUrl = 'http://127.0.0.1:8080/api/pearl/v1/eth/sign_transaction';

var providerNew = new OfflineSignProvider(nodeUrl, signServiceUrl, [account1,account2,...], config.aesKey, false);

var contractAddress = "0xafc60ddf39e7a953c4d341f2f4a80accf3432b76";
var myContract = TruffleContract({ abi: abi });
myContract.setProvider(providerNew);
myContract.defaults({ from: "0xd7358e66c2ec3e398b39567b0c9f53a8e8c6000f" });
var web3 = new Web3(providerNew);

myContract.at(contractAddress).then(function (instance) {
                console.log(instance)
            }).catch(e => {
                reject(e);
            });

Parameters:

    example: var providerNew = new OfflineSignProvider(nodeUrl, signServiceUrl, [account1,account2,...], config.aesKey);

Name	Type	Description
nodeUrl	string	The eth network node ur
signServiceUrl	string	The signature service ur
accounts	string	Array format account address, that sign service will use one of them to signature the transaction data
aesKey	string	AES key defined with the signature service
enable0x	boolean	Use 0x or not. If you need sign the message offline When you use 0x project, this param must be 'true'