var Prometheus = Prometheus || {}; var graphs = []; var graphTemplate; var SECOND = 1000; Handlebars.registerHelper('pathPrefix', function() { return PATH_PREFIX; }); Prometheus.Graph = function(element, options) { this.el = element; this.options = options; this.changeHandler = null; this.rickshawGraph = null; this.data = []; this.initialize(); }; Prometheus.Graph.timeFactors = { "y": 60 * 60 * 24 * 365, "w": 60 * 60 * 24 * 7, "d": 60 * 60 * 24, "h": 60 * 60, "m": 60, "s": 1 }; Prometheus.Graph.stepValues = [ "1s", "10s", "1m", "5m", "15m", "30m", "1h", "2h", "6h", "12h", "1d", "2d", "1w", "2w", "4w", "8w", "1y", "2y" ]; Prometheus.Graph.numGraphs = 0; Prometheus.Graph.prototype.initialize = function() { var self = this; self.id = Prometheus.Graph.numGraphs++; // Set default options. self.options["id"] = self.id; self.options["range_input"] = self.options["range_input"] || "1h"; if (self.options["tab"] === undefined) { self.options["tab"] = 1; } // Draw graph controls and container from Handlebars template. var graphHtml = graphTemplate(self.options); self.el.append(graphHtml); // Get references to all the interesting elements in the graph container and // bind event handlers. var graphWrapper = self.el.find("#graph_wrapper" + self.id); self.queryForm = graphWrapper.find(".query_form"); self.expr = graphWrapper.find("textarea[name=expr]"); self.expr.keypress(function(e) { // Enter was pressed without the shift key. if (e.which == 13 && !e.shiftKey) { self.queryForm.submit(); e.preventDefault(); } // Auto-resize the text area on input. var offset = this.offsetHeight - this.clientHeight; var resizeTextarea = function(el) { $(el).css('height', 'auto').css('height', el.scrollHeight + offset); }; $(this).on('keyup input', function() { resizeTextarea(this); }); }); self.expr.change(storeGraphOptionsInURL); self.rangeInput = self.queryForm.find("input[name=range_input]"); self.stackedBtn = self.queryForm.find(".stacked_btn"); self.stacked = self.queryForm.find("input[name=stacked]"); self.insertMetric = self.queryForm.find("select[name=insert_metric]"); self.refreshInterval = self.queryForm.find("select[name=refresh]"); self.consoleTab = graphWrapper.find(".console"); self.graphTab = graphWrapper.find(".graph_container"); self.tabs = graphWrapper.find("a[data-toggle='tab']"); self.tabs.eq(self.options["tab"]).tab("show"); self.tabs.on("shown.bs.tab", function(e) { var target = $(e.target); self.options["tab"] = target.parent().index(); storeGraphOptionsInURL(); if ($("#" + target.attr("aria-controls")).hasClass("reload")) { self.submitQuery(); } }); // Return moves focus back to expr instead of submitting. self.insertMetric.bind("keydown", "return", function(e) { self.expr.focus(); self.expr.val(self.expr.val()); return e.preventDefault(); }) self.error = graphWrapper.find(".error").hide(); self.graphArea = graphWrapper.find(".graph_area"); self.graph = self.graphArea.find(".graph"); self.yAxis = self.graphArea.find(".y_axis"); self.legend = graphWrapper.find(".legend"); self.spinner = graphWrapper.find(".spinner"); self.evalStats = graphWrapper.find(".eval_stats"); self.endDate = graphWrapper.find("input[name=end_input]"); self.endDate.datetimepicker({ language: 'en', pickSeconds: false, }); if (self.options["end_input"]) { self.endDate.data('datetimepicker').setValue(self.options["end_input"]); } self.endDate.change(function() { self.submitQuery() }); self.refreshInterval.change(function() { self.updateRefresh() }); self.isStacked = function() { return self.stacked.val() === '1'; }; var styleStackBtn = function() { var icon = self.stackedBtn.find('.glyphicon'); if (self.isStacked()) { self.stackedBtn.addClass("btn-primary"); icon.addClass("glyphicon-check"); icon.removeClass("glyphicon-unchecked"); } else { self.stackedBtn.removeClass("btn-primary"); icon.addClass("glyphicon-unchecked"); icon.removeClass("glyphicon-check"); } }; styleStackBtn(); self.stackedBtn.click(function() { if (self.isStacked() && self.graphJSON) { // If the graph was stacked, the original series data got mutated // (scaled) and we need to reconstruct it from the original JSON data. self.data = self.transformData(self.graphJSON); } self.stacked.val(self.isStacked() ? '0' : '1'); styleStackBtn(); self.updateGraph(); }); self.queryForm.submit(function() { self.consoleTab.addClass("reload"); self.graphTab.addClass("reload"); self.submitQuery(); return false; }); self.spinner.hide(); self.queryForm.find("button[name=inc_range]").click(function() { self.increaseRange(); }); self.queryForm.find("button[name=dec_range]").click(function() { self.decreaseRange(); }); self.queryForm.find("button[name=inc_end]").click(function() { self.increaseEnd(); }); self.queryForm.find("button[name=dec_end]").click(function() { self.decreaseEnd(); }); self.insertMetric.change(function() { self.expr.selection("replace", {text: self.insertMetric.val(), mode: "before"}); self.expr.focus(); // refocusing }); self.populateInsertableMetrics(); if (self.expr.val()) { self.submitQuery(); } }; Prometheus.Graph.prototype.populateInsertableMetrics = function() { var self = this; $.ajax({ method: "GET", url: PATH_PREFIX + "/api/v1/label/__name__/values", dataType: "json", success: function(json, textStatus) { if (json.status !== "success") { self.showError("Error loading available metrics!") return; } var metrics = json.data; for (var i = 0; i < metrics.length; i++) { self.insertMetric[0].options.add(new Option(metrics[i], metrics[i])); } self.expr.typeahead({ source: metrics, items: "all" }); // This needs to happen after attaching the typeahead plugin, as it // otherwise breaks the typeahead functionality. self.expr.focus(); }, error: function() { self.showError("Error loading available metrics!"); }, }); }; Prometheus.Graph.prototype.onChange = function(handler) { this.changeHandler = handler; }; Prometheus.Graph.prototype.getOptions = function() { var self = this; var options = {}; var optionInputs = [ "range_input", "end_input", "step_input", "stacked" ]; self.queryForm.find("input").each(function(index, element) { var name = element.name; if ($.inArray(name, optionInputs) >= 0) { options[name] = element.value; } }); options["expr"] = self.expr.val(); options["tab"] = self.options["tab"]; return options; }; Prometheus.Graph.prototype.parseDuration = function(rangeText) { var rangeRE = new RegExp("^([0-9]+)([ywdhms]+)$"); var matches = rangeText.match(rangeRE); if (!matches) { return }; if (matches.length != 3) { return 60; } var value = parseInt(matches[1]); var unit = matches[2]; return value * Prometheus.Graph.timeFactors[unit]; }; Prometheus.Graph.prototype.increaseRange = function() { var self = this; var rangeSeconds = self.parseDuration(self.rangeInput.val()); for (var i = 0; i < Prometheus.Graph.stepValues.length; i++) { if (rangeSeconds < self.parseDuration(Prometheus.Graph.stepValues[i])) { self.rangeInput.val(Prometheus.Graph.stepValues[i]); if (self.expr.val()) { self.submitQuery(); } return; } } }; Prometheus.Graph.prototype.decreaseRange = function() { var self = this; var rangeSeconds = self.parseDuration(self.rangeInput.val()); for (var i = Prometheus.Graph.stepValues.length - 1; i >= 0; i--) { if (rangeSeconds > self.parseDuration(Prometheus.Graph.stepValues[i])) { self.rangeInput.val(Prometheus.Graph.stepValues[i]); if (self.expr.val()) { self.submitQuery(); } return; } } }; Prometheus.Graph.prototype.getEndDate = function() { var self = this; if (!self.endDate || !self.endDate.val()) { return new Date(); } return self.endDate.data('datetimepicker').getDate().getTime(); }; Prometheus.Graph.prototype.getOrSetEndDate = function() { var self = this; var date = self.getEndDate(); self.setEndDate(date); return date; } Prometheus.Graph.prototype.setEndDate = function(date) { var self = this; self.endDate.data('datetimepicker').setValue(date); }; Prometheus.Graph.prototype.increaseEnd = function() { var self = this; self.setEndDate(new Date(self.getOrSetEndDate() + self.parseDuration(self.rangeInput.val()) * 1000/2 )) // increase by 1/2 range & convert ms in s self.submitQuery(); }; Prometheus.Graph.prototype.decreaseEnd = function() { var self = this; self.setEndDate(new Date(self.getOrSetEndDate() - self.parseDuration(self.rangeInput.val()) * 1000/2 )) self.submitQuery(); }; Prometheus.Graph.prototype.submitQuery = function() { var self = this; self.clearError(); if (!self.expr.val()) { return; } self.spinner.show(); self.evalStats.empty(); var startTime = new Date().getTime(); var rangeSeconds = self.parseDuration(self.rangeInput.val()); var resolution = self.queryForm.find("input[name=step_input]").val() || Math.max(Math.floor(rangeSeconds / 250), 1); var endDate = self.getEndDate() / 1000; if (self.queryXhr) { self.queryXhr.abort(); } var url; var success; var params = { "query": self.expr.val() }; if (self.options["tab"] === 0) { params['start'] = endDate - rangeSeconds; params['end'] = endDate; params['step'] = resolution; url = PATH_PREFIX + "/api/v1/query_range"; success = function(json, textStatus) { self.handleGraphResponse(json, textStatus); }; } else { params['time'] = startTime / 1000; url = PATH_PREFIX + "/api/v1/query"; success = function(json, textStatus) { self.handleConsoleResponse(json, textStatus); }; } self.queryXhr = $.ajax({ method: self.queryForm.attr("method"), url: url, dataType: "json", data: params, success: function(json, textStatus) { if (json.status !== "success") { self.showError(json.error); return; } success(json.data, textStatus); }, error: function(xhr, resp) { if (resp != "abort") { var err; if (xhr.responseJSON !== undefined) { err = xhr.responseJSON.error; } else { err = xhr.statusText; } self.showError("Error executing query: " + err); } }, complete: function() { var duration = new Date().getTime() - startTime; self.evalStats.html("Load time: " + duration + "ms
Resolution: " + resolution + "s"); self.spinner.hide(); } }); }; Prometheus.Graph.prototype.showError = function(msg) { var self = this; self.error.text(msg); self.error.show(); } Prometheus.Graph.prototype.clearError = function(msg) { var self = this; self.error.text(''); self.error.hide(); } Prometheus.Graph.prototype.updateRefresh = function() { var self = this; if (self.timeoutID) { window.clearTimeout(self.timeoutID); } interval = self.parseDuration(self.refreshInterval.val()); if (!interval) { return }; self.timeoutID = window.setTimeout(function() { self.submitQuery(); self.updateRefresh(); }, interval * SECOND); } Prometheus.Graph.prototype.renderLabels = function(labels) { var labelStrings = []; for (label in labels) { if (label != "__name__") { labelStrings.push("" + label + ": " + escapeHTML(labels[label])); } } return labels = "
" + labelStrings.join("
") + "
"; } Prometheus.Graph.prototype.metricToTsName = function(labels) { var tsName = (labels["__name__"] || '') + "{"; var labelStrings = []; for (label in labels) { if (label != "__name__") { labelStrings.push(label + "=\"" + labels[label] + "\""); } } tsName += labelStrings.join(",") + "}"; return tsName; }; Prometheus.Graph.prototype.parseValue = function(value) { var val = parseFloat(value); if (isNaN(val)) { // "+Inf", "-Inf", "+Inf" will be parsed into NaN by parseFloat(). The // can't be graphed, so show them as gaps (null). return null } return val; }; Prometheus.Graph.prototype.transformData = function(json) { var self = this; var palette = new Rickshaw.Color.Palette(); if (json.resultType != "matrix") { self.showError("Result is not of matrix type! Please enter a correct expression."); return []; } var data = json.result.map(function(ts) { var name; var labels; if (ts.metric === null) { name = "scalar"; labels = {}; } else { name = escapeHTML(self.metricToTsName(ts.metric)); labels = ts.metric; } return { name: name, labels: labels, data: ts.values.map(function(value) { return { x: value[0], y: self.parseValue(value[1]) } }), color: palette.color() }; }); Rickshaw.Series.zeroFill(data); return data; }; Prometheus.Graph.prototype.updateGraph = function() { var self = this; if (self.data.length == 0) { return; } // Remove any traces of an existing graph. self.legend.empty(); if (self.graphArea.children().length > 0) { self.graph.remove(); self.yAxis.remove(); } self.graph = $('
'); self.yAxis = $('
'); self.graphArea.append(self.graph); self.graphArea.append(self.yAxis); var endTime = self.getEndDate() / 1000; // Convert to UNIX timestamp. var duration = self.parseDuration(self.rangeInput.val()) || 3600; // 1h default. var startTime = endTime - duration; self.data.forEach(function(s) { // Padding series with invisible "null" values at the configured x-axis boundaries ensures // that graphs are displayed with a fixed x-axis range instead of snapping to the available // time range in the data. if (s.data[0].x > startTime) { s.data.unshift({x: startTime, y: null}); } if (s.data[s.data.length - 1].x < endTime) { s.data.push({x: endTime, y: null}); } }); // Now create the new graph. self.rickshawGraph = new Rickshaw.Graph({ element: self.graph[0], height: Math.max(self.graph.innerHeight(), 100), width: Math.max(self.graph.innerWidth() - 80, 200), renderer: (self.isStacked() ? "stack" : "line"), interpolation: "linear", series: self.data, min: "auto", }); var xAxis = new Rickshaw.Graph.Axis.Time({ graph: self.rickshawGraph }); var yAxis = new Rickshaw.Graph.Axis.Y({ graph: self.rickshawGraph, orientation: "left", tickFormat: Rickshaw.Fixtures.Number.formatKMBT, element: self.yAxis[0], }); self.rickshawGraph.render(); var hoverDetail = new Rickshaw.Graph.HoverDetail({ graph: self.rickshawGraph, formatter: function(series, x, y) { var swatch = ''; var content = swatch + (series.labels["__name__"] || 'value') + ": " + y + '
'; return content + self.renderLabels(series.labels); } }); var legend = new Rickshaw.Graph.Legend({ element: self.legend[0], graph: self.rickshawGraph, }); var highlighter = new Rickshaw.Graph.Behavior.Series.Highlight( { graph: self.rickshawGraph, legend: legend }); var shelving = new Rickshaw.Graph.Behavior.Series.Toggle({ graph: self.rickshawGraph, legend: legend }); self.changeHandler(); }; Prometheus.Graph.prototype.resizeGraph = function() { var self = this; if (self.rickshawGraph != null) { self.rickshawGraph.configure({ width: Math.max(self.graph.innerWidth() - 80, 200), }); self.rickshawGraph.render(); } } Prometheus.Graph.prototype.handleGraphResponse = function(json, textStatus) { var self = this // Rickshaw mutates passed series data for stacked graphs, so we need to save // the original AJAX response in order to re-transform it into series data // when the user disables the stacking. self.graphJSON = json; self.data = self.transformData(json); if (self.data.length == 0) { self.showError("No datapoints found."); return; } self.graphTab.removeClass("reload"); self.updateGraph(); } Prometheus.Graph.prototype.handleConsoleResponse = function(data, textStatus) { var self = this; self.consoleTab.removeClass("reload"); self.graphJSON = null; var tBody = self.consoleTab.find(".console_table tbody"); tBody.empty(); switch(data.resultType) { case "vector": if (data.result.length === 0) { tBody.append("no data"); return; } for (var i = 0; i < data.result.length; i++) { var s = data.result[i]; var tsName = self.metricToTsName(s.metric); tBody.append("" + escapeHTML(tsName) + "" + s.value[1] + ""); } break; case "matrix": if (data.result.length === 0) { tBody.append("no data"); return; } for (var i = 0; i < data.result.length; i++) { var v = data.result[i]; var tsName = self.metricToTsName(v.metric); var valueText = ""; for (var j = 0; j < v.values.length; j++) { valueText += v.values[j][1] + " @" + v.values[j][0] + "
"; } tBody.append("" + escapeHTML(tsName) + "" + valueText + "") } break; case "scalar": tBody.append("scalar" + data.result[1] + ""); break; case "string": tBody.append("string" + data.result[1] + ""); break; default: self.showError("Unsupported value type!"); break; } } function parseGraphOptionsFromURL() { var hashOptions = window.location.hash.slice(1); if (!hashOptions) { return []; } var optionsJSON = decodeURIComponent(window.location.hash.slice(1)); options = JSON.parse(optionsJSON); return options; } // NOTE: This needs to be kept in sync with rules/helpers.go:GraphLinkForExpression! function storeGraphOptionsInURL() { var allGraphsOptions = []; for (var i = 0; i < graphs.length; i++) { allGraphsOptions.push(graphs[i].getOptions()); } var optionsJSON = JSON.stringify(allGraphsOptions); window.location.hash = encodeURIComponent(optionsJSON); } function addGraph(options) { var graph = new Prometheus.Graph($("#graph_container"), options); graphs.push(graph); graph.onChange(function() { storeGraphOptionsInURL(); }); $(window).resize(function() { graph.resizeGraph(); }); } function escapeHTML(string) { var entityMap = { "&": "&", "<": "<", ">": ">", '"': '"', "'": ''', "/": '/' }; return String(string).replace(/[&<>"'\/]/g, function (s) { return entityMap[s]; }); } function init() { $.ajaxSetup({ cache: false }); $.ajax({ url: PATH_PREFIX + "/static/js/graph_template.handlebar", success: function(data) { graphTemplate = Handlebars.compile(data); var options = parseGraphOptionsFromURL(); if (options.length == 0) { options.push({}); } for (var i = 0; i < options.length; i++) { addGraph(options[i]); } $("#add_graph").click(function() { addGraph({}); }); } }) } $(init);