eth-mine-when-need/dist/index.js

This will start your Ethereum miner when there are transactions pending or waiting for confirmation

'use strict';Object.defineProperty(exports,'__esModule',{value:true});exports.mine_when_need=undefined;var _regenerator=require('babel-runtime/regenerator');var _regenerator2=_interopRequireDefault(_regenerator);var _createClass=function(){function defineProperties(target,props){for(var i=0;i<props.length;i++){var descriptor=props[i];descriptor.enumerable=descriptor.enumerable||false;descriptor.configurable=true;if('value'in descriptor)descriptor.writable=true;Object.defineProperty(target,descriptor.key,descriptor)}}return function(Constructor,protoProps,staticProps){if(protoProps)defineProperties(Constructor.prototype,protoProps);if(staticProps)defineProperties(Constructor,staticProps);return Constructor}}();var _os=require('os');var os=_interopRequireWildcard(_os);var _chalk=require('chalk');var _chalk2=_interopRequireDefault(_chalk);var _es6Promisify=require('es6-promisify');var _es6Promisify2=_interopRequireDefault(_es6Promisify);function _interopRequireWildcard(obj){if(obj&&obj.__esModule){return obj}else{var newObj={};if(obj!=null){for(var key in obj){if(Object.prototype.hasOwnProperty.call(obj,key))newObj[key]=obj[key]}}newObj.default=obj;return newObj}}function _interopRequireDefault(obj){return obj&&obj.__esModule?obj:{default:obj}}function _toConsumableArray(arr){if(Array.isArray(arr)){for(var i=0,arr2=Array(arr.length);i<arr.length;i++){arr2[i]=arr[i]}return arr2}else{return Array.from(arr)}}function _asyncToGenerator(fn){return function(){var gen=fn.apply(this,arguments);return new Promise(function(resolve,reject){function step(key,arg){try{var info=gen[key](arg);var value=info.value}catch(error){reject(error);return}if(info.done){resolve(value)}else{return Promise.resolve(value).then(function(value){step('next',value)},function(err){step('throw',err)})}}return step('next')})}}function _classCallCheck(instance,Constructor){if(!(instance instanceof Constructor)){throw new TypeError('Cannot call a class as a function')}}var DEFAULT_TX_CONFIRMATION_BLOCK=5;var mine_when_need=function(){_createClass(mine_when_need,[{key:'statusUpdate',value:function(){var _ref=_asyncToGenerator(_regenerator2.default.mark(function _callee(thisCls){var blockNumber,txCounts,i;return _regenerator2.default.wrap(function _callee$(_context){while(1){switch(_context.prev=_context.next){case 0:_context.next=2;return(0,_es6Promisify2.default)(thisCls.web3.eth.getBlockNumber)();case 2:blockNumber=_context.sent;_context.next=5;return['pending'].concat([].concat(_toConsumableArray(Array(DEFAULT_TX_CONFIRMATION_BLOCK).keys())).map(function(x){return blockNumber-x}));case 5:txCounts=_context.sent;i=0;case 7:if(!(i<txCounts.length)){_context.next=14;break}_context.next=10;return(0,_es6Promisify2.default)(thisCls.web3.eth.getBlockTransactionCount)(txCounts[i]);case 10:txCounts[i]=_context.sent;case 11:i++;_context.next=7;break;case 14:if(!txCounts.every(function(x){return x===0})){thisCls.startMining(thisCls)}else{thisCls.stopMining(thisCls)}case 15:case'end':return _context.stop();}}},_callee,this)}));function statusUpdate(_x){return _ref.apply(this,arguments)}return statusUpdate}()}]);function mine_when_need(ethIPC,web3,txConfirmation,mineCores){var _this=this,_arguments=arguments;_classCallCheck(this,mine_when_need);this.ethIPC=ethIPC;this.web3=web3;this.mineCores=mineCores||os.cpus().length;this.txConfirmation=txConfirmation||DEFAULT_TX_CONFIRMATION_BLOCK;this.statusUpdate(this);web3.eth.filter('latest',function(){_this.statusUpdate.apply(_this,[_this].concat(Array.prototype.slice.call(_arguments)))});web3.eth.filter('pending',function(){_this.statusUpdate.apply(_this,[_this].concat(Array.prototype.slice.call(_arguments)))})}_createClass(mine_when_need,[{key:'startMining',value:function(){var _ref2=_asyncToGenerator(_regenerator2.default.mark(function _callee2(thisCls){return _regenerator2.default.wrap(function _callee2$(_context2){while(1){switch(_context2.prev=_context2.next){case 0:_context2.next=2;return(0,_es6Promisify2.default)(thisCls.web3.eth.getMining)();case 2:if(_context2.sent){_context2.next=5;break}thisCls.ethIPC.minerStart(this.mineCores);console.log(_chalk2.default.green('Start mining at '+new Date));case 5:case'end':return _context2.stop();}}},_callee2,this)}));function startMining(_x2){return _ref2.apply(this,arguments)}return startMining}()},{key:'stopMining',value:function(){var _ref3=_asyncToGenerator(_regenerator2.default.mark(function _callee3(thisCls){return _regenerator2.default.wrap(function _callee3$(_context3){while(1){switch(_context3.prev=_context3.next){case 0:_context3.next=2;return(0,_es6Promisify2.default)(thisCls.web3.eth.getMining)();case 2:if(!_context3.sent){_context3.next=5;break}thisCls.ethIPC.minerStop();console.log(_chalk2.default.green('Stop mining at '+new Date));case 5:case'end':return _context3.stop();}}},_callee3,this)}));function stopMining(_x3){return _ref3.apply(this,arguments)}return stopMining}()}]);return mine_when_need}();exports.mine_when_need=mine_when_need;