turtlecoin-wallet-backend
Version:
[](https://travis-ci.org/turtlecoin/turtlecoin-wallet-backend-js)
92 lines (91 loc) • 2.93 kB
JavaScript
"use strict";
// Copyright (c) 2018, Zpalmtree
//
// Please see the included LICENSE file for more information.
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
const Logger_1 = require("./Logger");
class Metronome {
/**
* @param func The function to run
* @param interval How often to run the function
*/
constructor(func, interval) {
this.shouldStop = true;
/**
* Is code currently executing
*/
this.inTick = false;
this.started = false;
/**
* Function to run when stopping, and tick func has completed
*/
this.finishedFunc = undefined;
this.func = func;
this.interval = interval;
}
/**
* Start running the function
*/
start() {
return __awaiter(this, void 0, void 0, function* () {
if (this.started) {
return;
}
this.started = true;
this.shouldStop = false;
yield this.tick();
});
}
/**
* Stop running the function
*/
stop() {
return new Promise((resolve) => {
this.shouldStop = true;
clearTimeout(this.timer);
if (this.inTick) {
this.finishedFunc = () => {
this.started = false;
this.finishedFunc = undefined;
resolve();
};
}
else {
this.started = false;
resolve();
}
});
}
/**
* Run the function, then recurse
*/
tick() {
return __awaiter(this, void 0, void 0, function* () {
this.inTick = true;
try {
yield this.func();
}
catch (err) {
Logger_1.logger.log('Threw exception processing tick function: ' + err, Logger_1.LogLevel.ERROR, Logger_1.LogCategory.SYNC);
}
if (!this.shouldStop) {
this.timer = setTimeout(this.tick.bind(this), this.interval);
}
else {
if (this.finishedFunc) {
this.finishedFunc();
}
}
this.inTick = false;
});
}
}
exports.Metronome = Metronome;