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-rw-r--r--modules/http/static/kresd.js366
1 files changed, 366 insertions, 0 deletions
diff --git a/modules/http/static/kresd.js b/modules/http/static/kresd.js
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+var colours = ["#081d58", "#253494", "#225ea8", "#1d91c0", "#41b6c4", "#7fcdbb", "#c7e9b4", "#edf8b1", "#edf8b1"];
+var latency = ["slow", "1500ms", "1000ms", "500ms", "250ms", "100ms", "50ms", "10ms", "1ms"];
+var Socket = "MozWebSocket" in window ? MozWebSocket : WebSocket;
+let isGraphPaused = false;
+
+$(function() {
+ /* Helper functions */
+ function colorBracket(rtt) {
+ for (var i = latency.length - 1; i >= 0; i--) {
+ if (rtt <= parseInt(latency[i])) {
+ return 'q' + i;
+ }
+ }
+ return 'q8';
+ }
+ function toGeokey(lon, lat) {
+ return lon.toFixed(0)+'#'+lat.toFixed(0);
+ }
+ function updateVisibility(graph, metrics, id, toggle) {
+ /* Some labels are aggregates */
+ if (metrics[id] == null) {
+ for (var key in metrics) {
+ const m = metrics[key];
+ if (m.length > 3 && m[3] == id) {
+ graph.setVisibility(m[0], toggle);
+ }
+ }
+ } else {
+ graph.setVisibility(metrics[id][0], toggle);
+ }
+ }
+ function formatNumber(n) {
+ with (Math) {
+ var base = floor(log(abs(n))/log(1000));
+ var suffix = 'KMB'[base-1];
+ return suffix ? String(n/pow(1000,base)).substring(0,3)+suffix : ''+n;
+ }
+ }
+
+ /* Initialize snippets. */
+ $('section').each(function () {
+ const heading = $(this).find('h2');
+ $('#modules-dropdown').append('<li><a href="#'+this.id+'">'+heading.text()+'</a></li>');
+ });
+
+ /* Render other interesting metrics as lines (hidden by default) */
+ var data = [];
+ var last_metric = 17;
+ var metrics = {
+ 'answer.noerror': [0, 'NOERROR', null, 'By RCODE'],
+ 'answer.nodata': [1, 'NODATA', null, 'By RCODE'],
+ 'answer.nxdomain': [2, 'NXDOMAIN', null, 'By RCODE'],
+ 'answer.servfail': [3, 'SERVFAIL', null, 'By RCODE'],
+ 'answer.dnssec': [4, 'DNSSEC', null, 'By RCODE'],
+ 'cache.hit': [5, 'Cache hit'],
+ 'cache.miss': [6, 'Cache miss'],
+ 'cache.insert': [7, 'Cache insert'],
+ 'cache.delete': [8, 'Cache delete'],
+ 'worker.udp': [9, 'UDP queries'],
+ 'worker.tcp': [10, 'TCP queries'],
+ 'worker.ipv4': [11, 'IPv4 queries'],
+ 'worker.ipv6': [12, 'IPv6 queries'],
+ 'worker.concurrent': [13, 'Concurrent requests'],
+ 'worker.queries': [14, 'Queries received/s'],
+ 'worker.dropped': [15, 'Queries dropped'],
+ 'worker.usertime': [16, 'CPU (user)', null, 'Workers'],
+ 'worker.systime': [17, 'CPU (sys)', null, 'Workers'],
+ };
+
+ /* Render latency metrics as sort of a heatmap */
+ var series = {};
+ for (var i in latency) {
+ const name = 'RTT '+latency[i];
+ const colour = colours[colours.length - i - 1];
+ last_metric = last_metric + 1;
+ metrics['answer.'+latency[i]] = [last_metric, name, colour, 'latency'];
+ series[name] = {fillGraph: true, color: colour, fillAlpha: 1.0};
+ }
+ var labels = ['x'];
+ var visibility = [];
+ for (var key in metrics) {
+ labels.push(metrics[key][1]);
+ visibility.push(false);
+ }
+
+ /* Define how graph looks like. */
+ const graphContainer = $('#stats');
+ const graph = new Dygraph(
+ document.getElementById("chart"),
+ data, {
+ labels: labels,
+ labelsUTC: true,
+ labelsShowZeroValues: false,
+ visibility: visibility,
+ axes: { y: {
+ axisLabelFormatter: function(d) {
+ return formatNumber(d) + 'pps';
+ },
+ }},
+ series: series,
+ strokeWidth: 1,
+ highlightSeriesOpts: {
+ strokeWidth: 3,
+ strokeBorderWidth: 1,
+ highlightCircleSize: 5,
+ },
+ });
+ /* Define metric selector */
+ const chartSelector = $('#chart-selector').selectize({
+ maxItems: null,
+ create: false,
+ onItemAdd: function (x) { updateVisibility(graph, metrics, x, true); },
+ onItemRemove: function (x) { updateVisibility(graph, metrics, x, false); }
+ })[0].selectize;
+ for (var key in metrics) {
+ const m = metrics[key];
+ const groupid = m.length > 3 ? m[3] : key.split('.')[0];
+ const group = m.length > 3 ? m[3] : m[1].split(' ')[0];
+ /* Latency has a special aggregated item */
+ if (group != 'latency') {
+ chartSelector.addOptionGroup(groupid, { label: group } );
+ chartSelector.addOption({ text: m[1], value: key, optgroup: groupid });
+ }
+ }
+ /* Add latency as default */
+ chartSelector.addOption({ text: 'Latency', value: 'latency', optgroup: 'Queries' });
+ chartSelector.addItem('latency');
+ /* Add stacked graph control */
+ $('#chart-stacked').on('change', function(e) {
+ graph.updateOptions({stackedGraph: this.checked});
+ }).click();
+
+ /* Data map */
+ var fills = { defaultFill: '#F5F5F5' };
+ for (var i in colours) {
+ fills['q' + i] = colours[i];
+ }
+ const map = new Datamap({
+ element: document.getElementById('map'),
+ fills: fills,
+ data: {},
+ height: 400,
+ geographyConfig: {
+ highlightOnHover: false,
+ borderColor: '#ccc',
+ borderWidth: 0.5,
+ popupTemplate: function(geo, data) {
+ return ['<div class="hoverinfo">',
+ '<strong>', geo.properties.name, '</strong>',
+ '<br>Queries: <strong>', data ? data.queries : '0', '</strong>',
+ '</div>'].join('');
+ }
+ },
+ bubblesConfig: {
+ popupTemplate: function(geo, data) {
+ return ['<div class="hoverinfo">',
+ '<strong>', data.name, '</strong>',
+ '<br>Queries: <strong>', data ? data.queries : '0', '</strong>',
+ '<br>Average RTT: <strong>', data ? parseInt(data.rtt) : '0', ' ms</strong>',
+ '</div>'].join('');
+ }
+ }
+ });
+
+ /* Realtime updates over WebSockets */
+ function pushMetrics(resp, now, buffer) {
+ var line = new Array(labels.length);
+ line[0] = new Date(now * 1000);
+ for (var lb in resp) {
+ /* Push new datapoints */
+ const metric = metrics[lb];
+ if (metric) {
+ line[metric[0] + 1] = resp[lb];
+ }
+ }
+ /* Buffer graph changes. */
+ data.push(line);
+ if (data.length > 1000) {
+ data.shift();
+ }
+ if ( !buffer ) {
+ if ( !isGraphPaused ) {
+ graph.updateOptions( { 'file': data } );
+ }
+ }
+ }
+
+ var age = 0;
+ var bubbles = [];
+ var bubblemap = {};
+ function pushUpstreams(resp) {
+ if (resp == null) {
+ $('#map-container').hide();
+ return;
+ } else {
+ $('#map-container').show();
+ }
+ /* Get current maximum number of queries for bubble diameter adjustment */
+ var maxQueries = 1;
+ for (var key in resp) {
+ var val = resp[key];
+ if ('data' in val) {
+ maxQueries = Math.max(maxQueries, resp[key].data.length)
+ }
+ }
+ /* Update bubbles and prune the oldest */
+ for (var key in resp) {
+ var val = resp[key];
+ if (!val.data || !val.location || val.location.longitude == null) {
+ continue;
+ }
+ var sum = val.data.reduce(function(a, b) { return a + b; });
+ var avg = sum / val.data.length;
+ var geokey = toGeokey(val.location.longitude, val.location.latitude)
+ var found = bubblemap[geokey];
+ if (!found) {
+ found = {
+ name: [key],
+ longitude: val.location.longitude,
+ latitude: val.location.latitude,
+ queries: 0,
+ rtt: avg,
+ }
+ bubbles.push(found);
+ bubblemap[geokey] = found;
+ }
+ /* Update bubble parameters */
+ if (!(key in found.name)) {
+ found.name.push(key);
+ }
+ found.rtt = (found.rtt + avg) / 2.0;
+ found.fillKey = colorBracket(found.rtt);
+ found.queries = found.queries + val.data.length;
+ found.radius = Math.max(5, 15*(val.data.length/maxQueries));
+ found.age = age;
+ }
+ /* Prune bubbles not updated in a while. */
+ for (var i in bubbles) {
+ var b = bubbles[i];
+ if (b.age <= age - 5) {
+ bubbles.splice(i, 1)
+ bubblemap[i] = null;
+ }
+ }
+ map.bubbles(bubbles);
+ age = age + 1;
+ }
+
+ /* Per-worker information */
+ function updateRate(x, y, dt) {
+ return (100.0 * ((x - y) / dt)).toFixed(1);
+ }
+ function updateWorker(row, next, data, timestamp, buffer) {
+ const dt = timestamp - data.timestamp;
+ const cell = row.find('td');
+ /* Update spark lines and CPU times first */
+ if (dt > 0.0) {
+ const utimeRate = updateRate(next.usertime, data.last.usertime, dt);
+ const stimeRate = updateRate(next.systime, data.last.systime, dt);
+ cell.eq(1).find('span').text(utimeRate + '% / ' + stimeRate + '%');
+ /* Update sparkline graph */
+ data.data.push([new Date(timestamp * 1000), Number(utimeRate), Number(stimeRate)]);
+ if (data.data.length > 60) {
+ data.data.shift();
+ }
+ if (!buffer) {
+ data.graph.updateOptions( { 'file': data.data } );
+ }
+ }
+ /* Update other fields */
+ if (!buffer) {
+ cell.eq(2).text(formatNumber(next.rss) + 'B');
+ cell.eq(3).text(next.pagefaults);
+ cell.eq(4).text('Healthy').addClass('text-success');
+ }
+ }
+
+ var workerData = {};
+ function pushWorkers(resp, timestamp, buffer) {
+ if (resp == null) {
+ return;
+ }
+ const workerTable = $('#workers');
+ for (var pid in resp) {
+ var row = workerTable.find('tr[data-pid='+pid+']');
+ if (row.length == 0) {
+ row = workerTable.append(
+ '<tr data-pid='+pid+'><td>'+pid+'</td>'+
+ '<td><div class="spark" id="spark-'+pid+'" /><span /></td><td></td><td></td><td></td>'+
+ '</tr>');
+ /* Create sparkline visualisation */
+ const spark = row.find('#spark-'+pid);
+ spark.css({'margin-right': '1em', width: '80px', height: '1.4em'});
+ workerData[pid] = {timestamp: timestamp, data: [[new Date(timestamp * 1000),0,0]], last: resp[pid]};
+ const workerGraph = new Dygraph(spark[0],
+ workerData[pid].data, {
+ valueRange: [0, 100],
+ legend: 'never',
+ axes : {
+ x : {
+ drawGrid: false,
+ drawAxis : false,
+ },
+ y : {
+ drawGrid: false,
+ drawAxis : false,
+ }
+ },
+ labels: ['x', '%user', '%sys'],
+ labelsDiv: '',
+ stackedGraph: true,
+ }
+ );
+ workerData[pid].graph = workerGraph;
+ }
+ updateWorker(row, resp[pid], workerData[pid], timestamp, buffer);
+ /* Track last datapoint */
+ workerData[pid].last = resp[pid];
+ workerData[pid].timestamp = timestamp;
+ }
+ /* Prune unhealthy PIDs */
+ if (!buffer) {
+ workerTable.find('tr').each(function () {
+ const e = $(this);
+ if (!(e.data('pid') in resp)) {
+ const healthCell = e.find('td').last();
+ healthCell.removeClass('text-success')
+ healthCell.text('Dead').addClass('text-danger');
+ }
+ });
+ }
+ }
+
+ /* WebSocket endpoints */
+ var wsStats = (secure ? 'wss://' : 'ws://') + location.host + '/stats';
+ var ws = new Socket(wsStats);
+ ws.onmessage = function(evt) {
+ var data = JSON.parse(evt.data);
+ if (data[0]) {
+ if (data.length > 0) {
+ pushUpstreams(data[data.length - 1].upstreams);
+ }
+ /* Buffer datapoints and redraw last */
+ for (var i in data) {
+ const is_last = (i == data.length - 1);
+ pushWorkers(data[i].workers, data[i].time, !is_last);
+ pushMetrics(data[i].stats, data[i].time, !is_last);
+ }
+ } else {
+ pushUpstreams(data.upstreams);
+ pushWorkers(data.workers, data.time);
+ pushMetrics(data.stats, data.time);
+ }
+ };
+
+ chartElement.addEventListener( 'mouseover', ( event ) =>
+ {
+ isGraphPaused = true;
+ }, false );
+
+ chartElement.addEventListener( 'mouseout', ( event ) =>
+ {
+ isGraphPaused = false;
+ }, false );
+
+});
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 10:24:02 +0000