37 lines
788 B
JavaScript
37 lines
788 B
JavaScript
|
|
||
|
|
class PeriodicRequest {
|
||
|
|
constructor(interval, callback, err_callback) {
|
||
|
|
this.error = false;
|
||
|
|
this.timer = undefined;
|
||
|
|
this.result = undefined;
|
||
|
|
this.interval = interval;
|
||
|
|
this.callback = callback;
|
||
|
|
this.err_callback = err_callback;
|
||
|
|
}
|
||
|
|
|
||
|
|
request(url) {
|
||
|
|
app.get(url, (msg) => {
|
||
|
|
this.result = msg;
|
||
|
|
this.error = false;
|
||
|
|
this.callback(msg);
|
||
|
|
}, (Http) => {
|
||
|
|
if (!Http.status || Http.status >= 400) {
|
||
|
|
this.err_callback(Http.status);
|
||
|
|
this.error = true;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
stopRequesting() {
|
||
|
|
this.result = undefined;
|
||
|
|
clearInterval(this.timer);
|
||
|
|
}
|
||
|
|
|
||
|
|
startRequesting(url) {
|
||
|
|
this.stopRequesting();
|
||
|
|
this.timer = window.setInterval(function() {
|
||
|
|
this.request(url);
|
||
|
|
}.bind(this), this.interval);
|
||
|
|
}
|
||
|
|
}
|