56 lines
1.5 KiB
JavaScript
56 lines
1.5 KiB
JavaScript
var fs = require('fs');
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var sha3_256 = require('js-sha3').sha3_256;
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ChainManager = function() {
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this.chainManagerConfig = {};
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this.currentChain = {};
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this.file = "";
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}
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ChainManager.prototype.loadConfigFile = function(filename) {
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this.file = filename;
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try {
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var obj = JSON.parse(fs.readFileSync(filename));
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this.chainManagerConfig = obj;
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} catch (e) {
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console.warn("error reading " + filename + "; defaulting to empty set");
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}
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return this;
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};
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ChainManager.prototype.loadConfig = function(config) {
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this.chainManagerConfig = config;
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return this;
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};
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ChainManager.prototype.init = function(env, config, web3) {
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var block = web3.eth.getBlock(0);
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if(!block){
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throw new Error("Cannot get the genesis block, is embark blockchain running ?");
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}
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var chainId = block.hash;
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if (this.chainManagerConfig[chainId] === undefined) {
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this.chainManagerConfig[chainId] = {contracts: {}};
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}
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this.currentChain = this.chainManagerConfig[chainId];
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}
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ChainManager.prototype.addContract = function(contractName, code, args, address) {
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this.currentChain.contracts[sha3_256(code + contractName + args.join(','))] = {
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name: contractName,
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address: address
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}
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}
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ChainManager.prototype.getContract = function(contractName, code, args) {
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return this.currentChain.contracts[sha3_256(code + contractName + args.join(','))];
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}
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ChainManager.prototype.save = function() {
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fs.writeFileSync(this.file, JSON.stringify(this.chainManagerConfig));
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}
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module.exports = ChainManager;
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