open-consul/ui-v2/app/components/tomography-graph/index.js

61 lines
1.8 KiB
JavaScript

import Component from '@ember/component';
import { computed, set, get } from '@ember/object';
const size = 336;
const insetSize = size / 2 - 8;
const inset = function(num) {
return insetSize * num;
};
const milliseconds = function(num, max) {
return max > 0 ? parseInt(max * num) / 100 : 0;
};
export default Component.extend({
size: size,
tomography: 0,
max: -999999999,
init: function() {
this._super(...arguments);
this.circle = [inset(1), inset(0.25), inset(0.5), inset(0.75), inset(1)];
this.labels = [inset(-0.25), inset(-0.5), inset(-0.75), inset(-1)];
},
milliseconds: computed('distances', 'max', function() {
const max = get(this, 'max');
return [
milliseconds(25, max),
milliseconds(50, max),
milliseconds(75, max),
milliseconds(100, max),
];
}),
distances: computed('tomography', function() {
const tomography = get(this, 'tomography');
let distances = get(tomography, 'distances') || [];
// TODO: This should probably be moved into the milliseconds computedProperty
/*eslint ember/no-side-effects: "warn"*/
distances.forEach((d, i) => {
if (d.distance > get(this, 'max')) {
set(this, 'max', d.distance);
}
});
let n = get(distances, 'length');
if (n > 360) {
// We have more nodes than we want to show, take a random sampling to keep
// the number around 360.
const sampling = 360 / n;
distances = distances.filter(function(_, i) {
return i == 0 || i == n - 1 || Math.random() < sampling;
});
n = get(distances, 'length');
}
return distances.map((d, i) => {
return {
rotate: (i * 360) / n,
y2: -insetSize * (d.distance / get(this, 'max')),
node: d.node,
distance: d.distance,
segment: d.segment,
};
});
}),
});