bot18/node_modules/backoff/index.js

A high-frequency cryptocurrency trading bot by Zenbot creator @carlos8f

/*
 * Copyright (c) 2012 Mathieu Turcotte
 * Licensed under the MIT license.
 */

var Backoff = require('./lib/backoff');
var ExponentialBackoffStrategy = require('./lib/strategy/exponential');
var FibonacciBackoffStrategy = require('./lib/strategy/fibonacci');
var FunctionCall = require('./lib/function_call.js');

module.exports.Backoff = Backoff;
module.exports.FunctionCall = FunctionCall;
module.exports.FibonacciStrategy = FibonacciBackoffStrategy;
module.exports.ExponentialStrategy = ExponentialBackoffStrategy;

/**
 * Constructs a Fibonacci backoff.
 * @param options Fibonacci backoff strategy arguments.
 * @return The fibonacci backoff.
 * @see FibonacciBackoffStrategy
 */
module.exports.fibonacci = function(options) {
    return new Backoff(new FibonacciBackoffStrategy(options));
};

/**
 * Constructs an exponential backoff.
 * @param options Exponential strategy arguments.
 * @return The exponential backoff.
 * @see ExponentialBackoffStrategy
 */
module.exports.exponential = function(options) {
    return new Backoff(new ExponentialBackoffStrategy(options));
};

/**
 * Constructs a FunctionCall for the given function and arguments.
 * @param fn The function to wrap in a backoff handler.
 * @param vargs The function's arguments (var args).
 * @param callback The function's callback.
 * @return The FunctionCall instance.
 */
module.exports.call = function(fn, vargs, callback) {
    var args = Array.prototype.slice.call(arguments);
    fn = args[0];
    vargs = args.slice(1, args.length - 1);
    callback = args[args.length - 1];
    return new FunctionCall(fn, vargs, callback);
};