consul/ui/packages/consul-ui/app/components/event-source/index.js

92 lines
2.6 KiB
JavaScript

import Component from '@ember/component';
import { inject as service } from '@ember/service';
import { get, set } from '@ember/object';
const replace = function(
obj,
prop,
value,
destroy = (prev = null, value) => (typeof prev === 'function' ? prev() : null)
) {
const prev = obj[prop];
if (prev !== value) {
destroy(prev, value);
}
return set(obj, prop, value);
};
export default Component.extend({
tagName: '',
dom: service('dom'),
logger: service('logger'),
data: service('data-source/service'),
closeOnDestroy: true,
onerror: function(e) {
this.logger.execute(e.error);
},
init: function() {
this._super(...arguments);
this._listeners = this.dom.listeners();
},
willDestroyElement: function() {
if (this.closeOnDestroy) {
this.actions.close.apply(this, []);
}
this._listeners.remove();
this._super(...arguments);
},
didReceiveAttrs: function() {
this._super(...arguments);
// only close and reopen if the uri changes
// otherwise this will fire whenever the proxies data changes
if (get(this, 'src.configuration.uri') !== get(this, 'source.configuration.uri')) {
this.actions.open.apply(this, []);
}
},
actions: {
open: function() {
replace(this, 'source', this.data.open(this.src, this), (prev, source) => {
// Makes sure any previous source (if different) is ALWAYS closed
if (typeof prev !== 'undefined') {
this.data.close(prev, this);
}
});
replace(this, 'proxy', this.src, (prev, proxy) => {
// Makes sure any previous proxy (if different) is ALWAYS closed
if (typeof prev !== 'undefined') {
prev.destroy();
}
});
const error = err => {
try {
const error = get(err, 'error.errors.firstObject');
if (get(error || {}, 'status') !== '429') {
this.onerror(err);
}
this.logger.execute(err);
} catch (err) {
this.logger.execute(err);
}
};
// set up the listeners (which auto cleanup on component destruction)
// we only need errors here as this only uses proxies which
// automatically update their data
const remove = this._listeners.add(this.source, {
error: e => {
error(e);
},
});
replace(this, '_remove', remove);
},
close: function() {
if (typeof this.source !== 'undefined') {
this.data.close(this.source, this);
replace(this, '_remove', undefined);
set(this, 'source', undefined);
}
if (typeof this.proxy !== 'undefined') {
this.proxy.destroy();
}
},
},
});