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Diffstat (limited to '')
| -rw-r--r-- | modules/http/static/kresd.js | 367 |
1 files changed, 367 insertions, 0 deletions
diff --git a/modules/http/static/kresd.js b/modules/http/static/kresd.js new file mode 100644 index 0000000..6a6dab1 --- /dev/null +++ b/modules/http/static/kresd.js @@ -0,0 +1,367 @@ +/* SPDX-License-Identifier: GPL-3.0-or-later */ +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 = ('https:' == document.location.protocol ? '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 ); + +}); |