Commit a3e1cb81 authored by Filipa Lacerda's avatar Filipa Lacerda

Merge branch '38394-smarter-interval' into 'master'

don't re-run smart interval callback if there is already one in progress

Closes #38394

See merge request gitlab-org/gitlab-ce!15032
parents c8eb789b 862d781d
......@@ -3,9 +3,10 @@
* and controllable by a public API.
*/
class SmartInterval {
export default class SmartInterval {
/**
* @param { function } opts.callback Function to be called on each iteration (required)
* @param { function } opts.callback Function that returns a promise, called on each iteration
* unless still in progress (required)
* @param { milliseconds } opts.startingInterval `currentInterval` is set to this initially
* @param { milliseconds } opts.maxInterval `currentInterval` will be incremented to this
* @param { milliseconds } opts.hiddenInterval `currentInterval` is set to this
......@@ -42,13 +43,16 @@ class SmartInterval {
const cfg = this.cfg;
const state = this.state;
if (cfg.immediateExecution) {
if (cfg.immediateExecution && !this.isLoading) {
cfg.immediateExecution = false;
cfg.callback();
this.triggerCallback();
}
state.intervalId = window.setInterval(() => {
cfg.callback();
if (this.isLoading) {
return;
}
this.triggerCallback();
if (this.getCurrentInterval() === cfg.maxInterval) {
return;
......@@ -76,7 +80,7 @@ class SmartInterval {
// start a timer, using the existing interval
resume() {
this.stopTimer(); // stop exsiting timer, in case timer was not previously stopped
this.stopTimer(); // stop existing timer, in case timer was not previously stopped
this.start();
}
......@@ -104,6 +108,18 @@ class SmartInterval {
this.initPageUnloadHandling();
}
triggerCallback() {
this.isLoading = true;
this.cfg.callback()
.then(() => {
this.isLoading = false;
})
.catch((err) => {
this.isLoading = false;
throw err;
});
}
initVisibilityChangeHandling() {
// cancel interval when tab no longer shown (prevents cached pages from polling)
document.addEventListener('visibilitychange', this.handleVisibilityChange.bind(this));
......@@ -154,4 +170,3 @@ class SmartInterval {
}
}
window.gl.SmartInterval = SmartInterval;
import SmartInterval from '~/smart_interval';
import Flash from '../flash';
import {
WidgetHeader,
......@@ -81,7 +82,7 @@ export default {
return new MRWidgetService(endpoints);
},
checkStatus(cb) {
this.service.checkStatus()
return this.service.checkStatus()
.then(res => res.json())
.then((res) => {
this.handleNotification(res);
......@@ -97,7 +98,7 @@ export default {
});
},
initPolling() {
this.pollingInterval = new gl.SmartInterval({
this.pollingInterval = new SmartInterval({
callback: this.checkStatus,
startingInterval: 10000,
maxInterval: 30000,
......@@ -106,7 +107,7 @@ export default {
});
},
initDeploymentsPolling() {
this.deploymentsInterval = new gl.SmartInterval({
this.deploymentsInterval = new SmartInterval({
callback: this.fetchDeployments,
startingInterval: 30000,
maxInterval: 120000,
......@@ -121,7 +122,7 @@ export default {
}
},
fetchDeployments() {
this.service.fetchDeployments()
return this.service.fetchDeployments()
.then(res => res.json())
.then((res) => {
if (res.length) {
......
---
title: Update Merge Request polling so there is only one request at a time
merge_request: 15032
author:
type: fixed
This diff is collapsed.
......@@ -121,24 +121,28 @@ describe('mrWidgetOptions', () => {
describe('initPolling', () => {
it('should call SmartInterval', () => {
spyOn(gl, 'SmartInterval').and.returnValue({
resume() {},
stopTimer() {},
});
spyOn(vm, 'checkStatus').and.returnValue(Promise.resolve());
jasmine.clock().install();
vm.initPolling();
expect(vm.checkStatus).not.toHaveBeenCalled();
jasmine.clock().tick(10000);
expect(vm.pollingInterval).toBeDefined();
expect(gl.SmartInterval).toHaveBeenCalled();
expect(vm.checkStatus).toHaveBeenCalled();
jasmine.clock().uninstall();
});
});
describe('initDeploymentsPolling', () => {
it('should call SmartInterval', () => {
spyOn(gl, 'SmartInterval');
spyOn(vm, 'fetchDeployments').and.returnValue(Promise.resolve());
vm.initDeploymentsPolling();
expect(vm.deploymentsInterval).toBeDefined();
expect(gl.SmartInterval).toHaveBeenCalled();
expect(vm.fetchDeployments).toHaveBeenCalled();
});
});
......
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