65 lines
1.8 KiB
JavaScript
65 lines
1.8 KiB
JavaScript
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import Service, { inject as service } from '@ember/service';
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export default Service.extend({
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dom: service('dom'),
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env: service('env'),
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init: function() {
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this._super(...arguments);
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this._listeners = this.dom.listeners();
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this.connections = new Set();
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this.addVisibilityChange();
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},
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willDestroy: function() {
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this._listeners.remove();
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this.purge();
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this._super(...arguments);
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},
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addVisibilityChange: function() {
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// when the user hides the tab, abort all connections
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this._listeners.add(this.dom.document(), {
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visibilitychange: e => {
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if (e.target.hidden) {
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this.purge();
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}
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},
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});
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},
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whenAvailable: function(e) {
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// if the user has hidden the tab (hidden browser/tab switch)
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// any aborted errors should restart
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const doc = this.dom.document();
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if (doc.hidden) {
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return new Promise(resolve => {
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const remove = this._listeners.add(doc, {
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visibilitychange: function(event) {
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remove();
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// we resolve with the event that comes from
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// whenAvailable not visibilitychange
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resolve(e);
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},
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});
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});
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}
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return Promise.resolve(e);
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},
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purge: function() {
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[...this.connections].forEach(function(connection) {
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// Cancelled
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connection.abort(0);
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});
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this.connections = new Set();
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},
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acquire: function(request) {
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this.connections.add(request);
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if (this.connections.size > this.env.var('CONSUL_HTTP_MAX_CONNECTIONS')) {
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const connection = this.connections.values().next().value;
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this.connections.delete(connection);
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// Too Many Requests
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connection.abort(429);
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}
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},
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release: function(request) {
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this.connections.delete(request);
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},
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});
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