94 lines
2.7 KiB
JavaScript
94 lines
2.7 KiB
JavaScript
const util = require('util');
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const Web3 = require('web3');
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const metamgr = require('./metamgr');
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const utils = require('./utils');
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const sync = require("./sync");
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const log = require("./log");
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const C = require("./C");
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class BlockChain {
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constructor() {
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this.currBlockNumber = 0;
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this.refreshBlockNumberCond = new sync.Cond();
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this.lastRefreshBlockNumberTime = utils.getUtcTime();
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this.deltaNumber = BigInt(0);
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}
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async initInstance(user, address, jsonUrl) {
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const json = utils.readJsonFromFile(jsonUrl);
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return new this.web3.eth.Contract(
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json.abi,
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address,
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{ from: user }
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);
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}
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async init() {
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this.web3 = new Web3(metamgr.getServerConf()['block_server']);
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const userAddress = metamgr.getServerConf()['user_address'];
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const userBuyAddress = metamgr.getServerConf()['user_buy_address'];
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for (const data of metamgr.getContracts()) {
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this[`${data.name}Instance`] = await this.initInstance(userAddress, data.address, data.json);
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}
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for (const data of metamgr.getContracts()) {
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this[`${data.name}InstanceBuy`] = await this.initInstance(userBuyAddress, data.address, data.json);
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}
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setTimeout(this.refreshBlockNumber.bind(this), 1000 * 0.01);
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setInterval(this.outputCurrBlockNumber.bind(this), 1000 * 10);
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utils.emitEvent(C.BC_INITIALIZED_EVENT);
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}
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async refreshBlockNumber() {
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const logClass = 'refreshBlockNumber';
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while (true) {
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try {
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this.currBlockNumber = await this.web3.eth.getBlockNumber();
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if (!utils.isOnlineEnv()) {
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this.deltaNumber += BigInt(3);
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if (this.deltaNumber > 30) {
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this.deltaNumber = BigInt(0);
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}
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this.currBlockNumber = BigInt(this.getCurrBlockNumber()) + this.deltaNumber;
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}
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this.lastRefreshBlockNumberTime = utils.getUtcTime();
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} catch (e) {
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log.warning(util.format('%s err:%s', {
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logClass,
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e
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}));
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}
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await this.refreshBlockNumberCond.wait(1000 * 3);
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}
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}
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isComfirmed(blockNumber) {
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const logClass = 'isComfirmed';
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try {
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return BigInt(blockNumber) + BigInt(6) < BigInt(this.getCurrBlockNumber());
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} catch (e) {
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log.warning(util.format('%s err:%s',
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logClass,
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e
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));
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}
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return false;
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}
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getCurrBlockNumber() {
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return this.currBlockNumber;
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}
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outputCurrBlockNumber() {
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const logClass = 'outputCurrBlockNumber';
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log.info(util.format('%s currBlockNumber:%s',
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logClass,
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this.getCurrBlockNumber()
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));
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}
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}
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module.exports = new BlockChain();
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