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