Si usted quiere aprender a usar múltiples intercambios, múltiples hilos o gráficos, puede aprender esta estrategia.
function _D(t) {
if (typeof(t) == 'undefined') {
t = new Date();
}
var year = t.getFullYear();
var month = t.getMonth() + 1;
var day = t.getDate();
var hour = t.getHours();
var minute = t.getMinutes();
var second = t.getSeconds();
if (month < 10) {
month = '0' + month;
}
if (day < 10) {
day = '0' + day;
}
if (hour < 10) {
hour = '0' + hour;
}
if (minute < 10) {
minute = '0' + minute;
}
if (second < 10) {
second = '0' + second;
}
return year + '-' + month + '-' + day + ' ' + hour + ':' + minute + ':' + second;
}
function ExchangeManager(e, idx) {
var arr = [];
this.Last = 0;
this.e = e;
this.idx = idx;
this.Go = e.Go;
this.GetName = e.GetName;
this.GetLabel = e.GetLabel;
this.health = 100;
this.tickerChanged = false;
this.init = function() {
if (e.GetName() == "Futures_BitVC") {
e.SetContractType("week");
}
var ticker = e.GetTicker();
if (!ticker) {
this.Last = 0;
} else {
this.Last = _N(ticker.Last, 3);
}
this.ticker = ticker;
this.tickerChanged = true;
};
this.updateHealth = function(ticker) {
if (ticker) {
this.tickerChanged = _N(ticker.Last, 3) != this.Last;
this.Last = _N(ticker.Last, 3);
this.ticker = ticker;
}
arr.push(ticker);
if (arr.length > TickCount) {
arr.shift();
}
};
this.getHealth = function() {
var ratio = 0;
var n = Math.min(TickCount, arr.length);
for (var i = n-1; i >=0; i--) {
if (arr[i]) {
ratio++;
}
}
return parseFloat(((ratio * 100) / n).toFixed(3));
};
}
function multiCall(tasks, callback, isRetry) {
var ret = [];
var n = 0;
if (typeof(isRetry) == 'undefined') {
isRetry = true;
}
var ts = new Date();
while (true) {
var now = new Date();
if ((now.getTime() - ts.getTime()) > 1000) {
ts = now;
var waitNames = [];
for (var i = 0; i < tasks.length; i++) {
if (typeof(ret[i]) == 'undefined' || typeof(ret[i].wait) != "undefined") {
waitNames.push(tasks[i][0].GetName() + "("+tasks[i].slice(1).join(",")+")");
}
}
if (waitNames.length > 0) {
// add api status as extra
LogStatus("等待: " + waitNames.join(", ") + " 当前时间:" + _D() + " 重试" + (isRetry ? "开启" : "关闭"));
}
}
for (var i = 0; i < tasks.length; i++) {
if (typeof(ret[i]) != 'undefined' && typeof(ret[i].wait) != "undefined") {
var r = ret[i].wait(0);
if (r) {
ret[i] = r;
n++;
if (typeof(callback) != 'undefined') {
callback(tasks[i], r);
}
} else if (typeof(r) != 'undefined') {
if (isRetry) {
// null retry
delete ret[i];
} else {
n++;
// ignore
ret[i] = true;
if (typeof(callback) != 'undefined') {
callback(tasks[i], r);
}
}
}
}
if (typeof(ret[i]) == 'undefined') {
ret[i] = tasks[i][0].Go.apply(this, tasks[i].slice(1));
}
}
if (n == tasks.length) {
break;
}
Sleep(50);
}
return ret;
}
function EnsureCall(method) {
var r;
while (!(r = method.apply(this, Array.prototype.slice.call(arguments).slice(1)))) {
Sleep(300);
}
return r;
}
function main() {
var keys = [];
var table = {
type: 'table',
title: '行情信息',
cols: ['交易所', '买一', '卖一', '最后成交价', '最高', '最低', '交易量'],
rows: []
};
var es = [];
for (var i = 0; i < exchanges.length; i++) {
var m = new ExchangeManager(exchanges[i], i);
m.init();
es.push(m);
keys.push(exchanges[i].GetLabel());
}
var chart = Chart({
__isStock: false,
chart: { type: 'column' },
title: { text: '交易所API可用率' },
subtitle: { text: '采样最近 ' + TickCount + ' 次, 每 ' + Interval +' 秒更新一次' },
xAxis: { categories: keys },
yAxis: [{
min: 0,
max: 100,
title: {text: '可用率'}
},{
min: 1000,
title: {text: '最后成交价'},
style: {color: '#4572A7'},
opposite: true
}
],
plotOptions: {
column: {
pointPadding: 0.2,
borderWidth: 0
}
},
series: [
{ name: '可用率', data: [], tooltip: {valueSuffix: ' %'}, dataLabels: {color: '#000000', rotation: -35, enabled: true, x:2, y:50}},
{ name: '成交价', color: '#bbbbbb', yAxis: 1, data: [], tooltip: {valueSuffix: ' 元'}, dataLabels: {color: '#000000', rotation: -35, enabled: true, x:2, y:120}}
]
});
chart.reset();
// Initialize chart
for (var i = 0; i < es.length; i++) {
chart.add([0, 100]);
chart.add([1, es[i].Last]);
}
Log("初始化成功.");
Sleep(5000);
while (true) {
var tasks = [];
for (var i = 0; i < es.length; i++) {
tasks.push([es[i], "GetTicker"]);
}
multiCall(tasks, function(r, result) {
r[0].updateHealth(result);
}, false);
for (var i = 0; i < es.length; i++) {
var health = es[i].getHealth();
if (health != es[i].health) {
chart.add([0, health, es[i].idx]);
es[i].health = health;
}
if (es[i].tickerChanged) {
chart.add([1, es[i].Last, es[i].idx]);
}
var ticker = es[i].ticker;
if (ticker) {
table.rows[i] = [es[i].GetLabel(), ticker.Buy, ticker.Sell, ticker.Last + '#ff0000', ticker.High, ticker.Low, ticker.Volume];
}
}
LogStatus('最后更新于: ' + _D() +'\n`' + JSON.stringify(table) + '`');
var cmd = GetCommand();
if (cmd && cmd.indexOf('清空日志') === 0) {
LogReset();
Log("日志已重置");
}
Sleep(Interval*1000);
}
}