@emeraldplatform/eth-node/lib/NodeChecker.js

Ethereum and Ethereum classic full node management

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const rpc_1 = require("@emeraldplatform/rpc");
class NodeChecker {
    constructor(ethRpc) {
        this.ethRpc = ethRpc;
    }
    exists() {
        return this.ethRpc.web3.clientVersion();
    }
    check() {
        return new Promise((resolve, reject) => {
            let batch = new rpc_1.DefaultBatch();
            let nodeInfo = {
                chain: 'unknown',
                chainId: 0,
                clientVersion: null
            };
            batch.addCall('eth_getBlockByNumber', ['0x00', false])
                .then((block) => {
                if (block.hash === NodeChecker.ETC_MAINNET_GENESIS) {
                    nodeInfo.chain = nodeInfo.chain || 'ethereum';
                    nodeInfo.chainId = nodeInfo.chainId || 1;
                }
                else if (block.hash === NodeChecker.ETC_MORDEN_GENESIS) {
                    nodeInfo.chain = 'morden';
                    nodeInfo.chainId = 62;
                }
            }).catch(reject);
            batch.addCall('eth_getBlockByNumber', ['0x1d4c00', false])
                .then((block) => {
                if (block.hash === NodeChecker.ETC_BLOCK_1920000) {
                    nodeInfo.chain = "etc";
                    nodeInfo.chainId = 61;
                }
                else if (block.hash === NodeChecker.ETH_BLOCK_1920000) {
                    nodeInfo.chain = "ethereum";
                    nodeInfo.chainId = 1;
                }
            }).catch(reject);
            batch.addCall('web3_clientVersion', [])
                .then((version) => {
                nodeInfo.clientVersion = version;
            })
                .catch(reject);
            this.ethRpc.rpc.execute(batch)
                .then((_) => resolve(nodeInfo))
                .catch(reject);
        });
    }
}
exports.default = NodeChecker;
NodeChecker.ETC_MAINNET_GENESIS = '0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3';
NodeChecker.ETC_MORDEN_GENESIS = '0x0cd786a2425d16f152c658316c423e6ce1181e15c3295826d7c9904cba9ce303';
NodeChecker.ETC_BLOCK_1920000 = '0x94365e3a8c0b35089c1d1195081fe7489b528a84b22199c916180db8b28ade7f';
NodeChecker.ETH_BLOCK_1920000 = '0x4985f5ca3d2afbec36529aa96f74de3cc10a2a4a6c44f2157a57d2c6059a11bb';