prometheus/web/ui/static/js/graph/index.js

1216 lines
35 KiB
JavaScript

var Prometheus = Prometheus || {};
var graphTemplate;
var INPUT_DEBOUNCE_WAIT = 500; // ms
var SECOND = 1000;
/**
* Graph
*/
Prometheus.Graph = function(element, options, handleChange, handleRemove) {
this.el = element;
this.graphHTML = null;
this.options = options;
this.handleChange = handleChange;
this.handleRemove = function() {
handleRemove(this);
};
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 options = {
'pathPrefix': PATH_PREFIX,
'buildVersion': BUILD_VERSION
};
jQuery.extend(options, self.options);
self.graphHTML = $(Mustache.render(graphTemplate, options));
self.el.append(self.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");
// Auto-resize the text area on input or mouseclick
var resizeTextarea = function(el) {
var offset = el.offsetHeight - el.clientHeight;
$(el).css('height', 'auto').css('height', el.scrollHeight + offset);
};
self.expr = graphWrapper.find("textarea[name=expr]");
self.expr.keypress(function(e) {
const enter = 13;
if (e.which == enter && !e.shiftKey) {
self.queryForm.submit();
e.preventDefault();
}
$(this).on('keyup input', debounce(function() {
resizeTextarea(this);
}, INPUT_DEBOUNCE_WAIT));
});
self.expr.click(function(e) {
resizeTextarea(this);
});
self.expr.change(self.handleChange);
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 = $(e.target);
self.options.tab = target.parent().index();
self.handleChange();
if ($("#" + 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.warning = graphWrapper.find(".warning").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({
locale: 'en',
format: 'YYYY-MM-DD HH:mm',
toolbarPlacement: 'bottom',
sideBySide: true,
showTodayButton: true,
showClear: true,
showClose: true,
timeZone: 'UTC',
});
if (self.options.end_input) {
self.endDate.data('DateTimePicker').date(self.options.end_input);
}
self.endDate.on("dp.change", function() { self.submitQuery(); });
self.refreshInterval.change(function() { self.updateRefresh(); });
self.isStacked = function() {
return self.stacked.val() === '1';
};
self.moment = graphWrapper.find("input[name=moment_input]");
self.moment.datetimepicker({
locale: 'en',
format: 'YYYY-MM-DD HH:mm:ss',
toolbarPlacement: 'bottom',
sideBySide: true,
showTodayButton: true,
showClear: true,
showClose: true,
timeZone: 'UTC',
});
if (self.options.timestamp) {
var date = new Date(self.options.timestamp*1000)
self.moment.data('DateTimePicker').date(date);
} else if (self.options.moment_input) {
self.moment.data('DateTimePicker').date(self.options.moment_input);
}
self.moment.on("dp.change", function() { self.submitQuery(); });
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.handleChange();
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.queryForm.find("button[name=inc_moment]").click(function() { self.increaseMoment(); });
self.queryForm.find("button[name=dec_moment]").click(function() { self.decreaseMoment(); });
self.insertMetric.change(function() {
self.expr.selection("replace", {text: self.insertMetric.val(), mode: "before"});
self.expr.focus(); // refocusing
});
var removeBtn = graphWrapper.find("[name=remove]");
removeBtn.click(function() {
self.remove();
return false;
});
self.checkTimeDrift();
// initialize query history
if (!localStorage.getItem("history")) {
localStorage.setItem("history", JSON.stringify([]));
}
self.populateInsertableMetrics();
if (self.expr.val()) {
self.submitQuery();
}
};
Prometheus.Graph.prototype.checkTimeDrift = function() {
var self = this;
var browserTime = new Date().getTime() / 1000;
$.ajax({
method: "GET",
url: PATH_PREFIX + "/api/v1/query?query=time()",
dataType: "json",
success: function(json, textStatus) {
if (json.status !== "success") {
self.showError("Error querying time.");
return;
}
var serverTime = json.data.result[0];
var diff = Math.abs(browserTime - serverTime);
if (diff >= 30) {
self.showWarning(
"<div class=\"alert alert-warning\"><strong>Warning!</strong> Detected " +
diff.toFixed(2) +
" seconds time difference between your browser and the server. Prometheus relies on accurate time and time drift might cause unexpected query results.</div>"
);
}
},
error: function() {
self.showError("Error loading time.");
}
});
};
Prometheus.Graph.prototype.populateInsertableMetrics = function() {
var self = this;
$.ajax({
method: "GET",
url: PATH_PREFIX + "/api/v1/label/__name__/values",
dataType: "json",
success: function(json, textStatus) {
if (json.status !== "success") {
self.showError("Error loading available metrics!");
return;
}
pageConfig.allMetrics = json.data || []; // todo: do we need self.allMetrics? Or can it just live on the page
for (var i = 0; i < pageConfig.allMetrics.length; i++) {
self.insertMetric[0].options.add(new Option(pageConfig.allMetrics[i], pageConfig.allMetrics[i]));
}
self.fuzzyResult = {
query: null,
result: null,
map: {}
}
self.initTypeahead(self);
},
error: function() {
self.showError("Error loading available metrics!");
},
});
};
Prometheus.Graph.prototype.initTypeahead = function(self) {
const source = queryHistory.isEnabled() ? pageConfig.queryHistMetrics.concat(pageConfig.allMetrics) : pageConfig.allMetrics;
self.expr.typeahead({
autoSelect: false,
source: source,
items: 1000,
matcher: function (item) {
// If we have result for current query, skip
if (self.fuzzyResult.query !== this.query) {
self.fuzzyResult.query = this.query;
self.fuzzyResult.map = {};
self.fuzzyResult.result = fuzzy.filter(this.query.replace(/ /g, ""), this.source, {
pre: "<strong>",
post: "</strong>"
});
self.fuzzyResult.result.forEach(function(r) {
self.fuzzyResult.map[r.original] = r;
});
}
return item in self.fuzzyResult.map;
},
sorter: function (items) {
items.sort(function(a,b) {
var i = self.fuzzyResult.map[b].score - self.fuzzyResult.map[a].score;
return i === 0 ? a.localeCompare(b) : i;
});
return items;
}
});
// This needs to happen after attaching the typeahead plugin, as it
// otherwise breaks the typeahead functionality.
self.expr.focus();
queryHistory.bindHistoryEvents(self);
}
Prometheus.Graph.prototype.getOptions = function() {
var self = this;
var options = {};
var optionInputs = [
"range_input",
"end_input",
"step_input",
"stacked",
"moment_input"
];
self.queryForm.find("input").each(function(index, element) {
var name = element.name;
if ($.inArray(name, optionInputs) >= 0) {
if (element.value.length > 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 moment();
}
return self.endDate.data('DateTimePicker').date();
};
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').date(date);
};
Prometheus.Graph.prototype.increaseEnd = function() {
var self = this;
var newDate = moment(self.getOrSetEndDate());
newDate.add(self.parseDuration(self.rangeInput.val()) / 2, 'seconds');
self.setEndDate(newDate);
self.submitQuery();
};
Prometheus.Graph.prototype.decreaseEnd = function() {
var self = this;
var newDate = moment(self.getOrSetEndDate());
newDate.subtract(self.parseDuration(self.rangeInput.val()) / 2, 'seconds');
self.setEndDate(newDate);
self.submitQuery();
};
Prometheus.Graph.prototype.getMoment = function() {
var self = this;
if (!self.moment || !self.moment.val()) {
return moment();
}
return self.moment.data('DateTimePicker').date();
};
Prometheus.Graph.prototype.getOrSetMoment = function() {
var self = this;
var date = self.getMoment();
self.setMoment(date);
return date;
};
Prometheus.Graph.prototype.setMoment = function(date) {
var self = this;
self.moment.data('DateTimePicker').date(date);
};
Prometheus.Graph.prototype.increaseMoment = function() {
var self = this;
var newDate = moment(self.getOrSetMoment());
newDate.add(10, 'seconds');
self.setMoment(newDate);
self.submitQuery();
};
Prometheus.Graph.prototype.decreaseMoment = function() {
var self = this;
var newDate = moment(self.getOrSetMoment());
newDate.subtract(10, 'seconds');
self.setMoment(newDate);
self.submitQuery();
};
Prometheus.Graph.prototype.submitQuery = function() {
var self = this;
self.clearError();
self.clearWarning();
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 = parseInt(self.queryForm.find("input[name=step_input]").val()) || Math.max(Math.floor(rangeSeconds / 250), 1);
var endDate = self.getEndDate() / 1000;
var moment = self.getMoment() / 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 = moment;
url = PATH_PREFIX + "/api/v1/query";
success = function(json, textStatus) { self.handleConsoleResponse(json, textStatus); };
}
self.params = params;
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;
}
if ("warnings" in json && json.warnings.length > 0) {
self.showWarning(json.warnings.map(escapeHTML).join('<br>'));
}
queryHistory.handleHistory(self);
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(xhr, resp) {
if (resp == "abort") {
return;
}
var duration = new Date().getTime() - startTime;
var totalTimeSeries = 0;
if (xhr.responseJSON.data !== undefined) {
if (xhr.responseJSON.data.resultType === "scalar") {
totalTimeSeries = 1;
} else if(xhr.responseJSON.data.result !== null) {
totalTimeSeries = xhr.responseJSON.data.result.length;
}
}
self.evalStats.html("Load time: " + duration + "ms <br /> Resolution: " + resolution + "s <br />" + "Total time series: " + totalTimeSeries);
self.spinner.hide();
}
});
};
Prometheus.Graph.prototype.showError = function(msg) {
var self = this;
self.error.text(msg);
self.error.show();
};
Prometheus.Graph.prototype.clearError = function() {
var self = this;
self.error.text('');
self.error.hide();
};
Prometheus.Graph.prototype.showWarning = function(msg) {
var self = this;
self.warning.html(msg);
self.warning.show();
};
Prometheus.Graph.prototype.clearWarning = function() {
var self = this;
self.warning.html('');
self.warning.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 (var label in labels) {
if (label != "__name__") {
labelStrings.push("<strong>" + label + "</strong>: " + escapeHTML(labels[label]));
}
}
return labels = "<div class=\"labels\">" + labelStrings.join("<br>") + "</div>";
};
Prometheus.Graph.prototype.metricToTsName = function(labels) {
var tsName = (labels.__name__ || '') + "{";
var labelStrings = [];
for (var 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()
};
});
data.forEach(function(s) {
// Insert nulls for all missing steps.
var newSeries = [];
var pos = 0;
for (var t = self.params.start; t <= self.params.end; t += self.params.step) {
// Allow for floating point inaccuracy.
if (s.data.length > pos && s.data[pos].x < t + self.params.step / 100) {
newSeries.push(s.data[pos]);
pos++;
} else {
newSeries.push({x: t, y: null});
}
}
s.data = newSeries;
});
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 = $('<div class="graph"></div>');
self.yAxis = $('<div class="y_axis"></div>');
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",
});
// Find and set graph's max/min
if (self.isStacked() === true) {
// When stacked is toggled
var max = 0;
self.data.forEach(function(timeSeries) {
var currSeriesMax = 0;
timeSeries.data.forEach(function(dataPoint) {
if (dataPoint.y > currSeriesMax && dataPoint.y != null) {
currSeriesMax = dataPoint.y;
}
});
max += currSeriesMax;
});
self.rickshawGraph.max = max*1.05;
self.rickshawGraph.min = 0;
} else {
var min = Infinity;
var max = -Infinity;
self.data.forEach(function(timeSeries) {
timeSeries.data.forEach(function(dataPoint) {
if (dataPoint.y < min && dataPoint.y != null) {
min = dataPoint.y;
}
if (dataPoint.y > max && dataPoint.y != null) {
max = dataPoint.y;
}
});
});
var offset = 0.1 * (min === max ? max : Math.abs(max-min));
self.rickshawGraph.max = max + offset;
self.rickshawGraph.min = min - offset;
}
var xAxis = new Rickshaw.Graph.Axis.Time({ graph: self.rickshawGraph });
var yAxis = new Rickshaw.Graph.Axis.Y({
graph: self.rickshawGraph,
orientation: "left",
tickFormat: this.formatKMBT,
element: self.yAxis[0],
});
self.rickshawGraph.render();
var hoverDetail = new Rickshaw.Graph.HoverDetail({
graph: self.rickshawGraph,
formatter: function(series, x, y) {
var date = '<span class="date">' + new Date(x * 1000).toUTCString() + '</span>';
var swatch = '<span class="detail_swatch" style="background-color: ' + series.color + '"></span>';
var content = swatch + (series.labels.__name__ || 'value') + ": <strong>" + y + '</strong>';
return date + '<br>' + content + '<br>' + 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.handleChange();
};
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 === null || data.result.length === 0) {
tBody.append("<tr><td colspan='2'><i>no data</i></td></tr>");
return;
}
data.result = self.limitSeries(data.result);
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;
}
data.result = self.limitSeries(data.result);
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>" + escapeHTML(data.result[1]) + "</td></tr>");
break;
default:
self.showError("Unsupported value type!");
break;
}
self.handleChange();
};
Prometheus.Graph.prototype.remove = function() {
var self = this;
$(self.graphHTML).remove();
self.handleRemove();
self.handleChange();
};
Prometheus.Graph.prototype.formatKMBT = function(y) {
var abs_y = Math.abs(y);
if (abs_y >= 1e24) {
return (y / 1e24).toString() + "Y";
} else if (abs_y >= 1e21) {
return (y / 1e21).toString() + "Z";
} else if (abs_y >= 1e18) {
return (y / 1e18).toString() + "E";
} else if (abs_y >= 1e15) {
return (y / 1e15).toString() + "P";
} else if (abs_y >= 1e12) {
return (y / 1e12).toString() + "T";
} else if (abs_y >= 1e9) {
return (y / 1e9).toString() + "G";
} else if (abs_y >= 1e6) {
return (y / 1e6).toString() + "M";
} else if (abs_y >= 1e3) {
return (y / 1e3).toString() + "k";
} else if (abs_y >= 1) {
return y
} else if (abs_y === 0) {
return y
} else if (abs_y <= 1e-24) {
return (y / 1e-24).toString() + "y";
} else if (abs_y <= 1e-21) {
return (y / 1e-21).toString() + "z";
} else if (abs_y <= 1e-18) {
return (y / 1e-18).toString() + "a";
} else if (abs_y <= 1e-15) {
return (y / 1e-15).toString() + "f";
} else if (abs_y <= 1e-12) {
return (y / 1e-12).toString() + "p";
} else if (abs_y <= 1e-9) {
return (y / 1e-9).toString() + "n";
} else if (abs_y <= 1e-6) {
return (y / 1e-6).toString() + "µ";
} else if (abs_y <=1e-3) {
return (y / 1e-3).toString() + "m";
} else if (abs_y <= 1) {
return y
}
}
Prometheus.Graph.prototype.limitSeries = function(result) {
var self = this;
var MAX_SERIES_NUM = 10000;
var message = "<strong>Warning!</strong> Fetched " +
result.length + " series, but displaying only first " +
MAX_SERIES_NUM + ".";
if (result.length > MAX_SERIES_NUM) {
self.showWarning(message);
return result.splice(0, MAX_SERIES_NUM);
}
return result;
}
/**
* Page
*/
const pageConfig = {
allMetrics: [],
graphs: [],
queryHistMetrics: JSON.parse(localStorage.getItem('history')) || [],
};
Prometheus.Page = function() {};
Prometheus.Page.prototype.init = function() {
var graphOptions = this.parseURL();
if (graphOptions.length === 0) {
graphOptions.push({});
}
graphOptions.forEach(this.addGraph, this);
$("#add_graph").click(this.addGraph.bind(this, {}));
};
Prometheus.Page.prototype.parseURL = function() {
if (window.location.search == "") {
return [];
}
var queryParams = window.location.search.substring(1).split('&');
var queryParamHelper = new Prometheus.Page.QueryParamHelper();
return queryParamHelper.parseQueryParams(queryParams);
};
Prometheus.Page.prototype.addGraph = function(options) {
var graph = new Prometheus.Graph(
$("#graph_container"),
options,
this.updateURL.bind(this),
this.removeGraph.bind(this)
);
pageConfig.graphs.push(graph);
$(window).resize(function() {
graph.resizeGraph();
});
};
// NOTE: This needs to be kept in sync with /util/strutil/strconv.go:GraphLinkForExpression
Prometheus.Page.prototype.updateURL = function() {
var queryString = pageConfig.graphs.map(function(graph, index) {
var graphOptions = graph.getOptions();
var queryParamHelper = new Prometheus.Page.QueryParamHelper();
var queryObject = queryParamHelper.generateQueryObject(graphOptions, index);
return $.param(queryObject);
}, this).join("&");
history.pushState({}, "", "graph?" + queryString);
};
Prometheus.Page.prototype.removeGraph = function(graph) {
pageConfig.graphs = pageConfig.graphs.filter(function(g) {return g !== graph});
};
Prometheus.Page.QueryParamHelper = function() {};
Prometheus.Page.QueryParamHelper.prototype.parseQueryParams = function(queryParams) {
var orderedQueryParams = this.filterInvalidParams(queryParams).sort();
return this.fetchOptionsFromOrderedParams(orderedQueryParams, 0);
};
Prometheus.Page.QueryParamHelper.queryParamFormat = /^g\d+\..+=.+$/;
Prometheus.Page.QueryParamHelper.prototype.filterInvalidParams = function(paramTuples) {
return paramTuples.filter(function(paramTuple) {
return Prometheus.Page.QueryParamHelper.queryParamFormat.test(paramTuple);
});
};
Prometheus.Page.QueryParamHelper.prototype.fetchOptionsFromOrderedParams = function(queryParams, graphIndex) {
if (queryParams.length == 0) {
return [];
}
var prefixOfThisIndex = this.queryParamPrefix(graphIndex);
var numberOfParamsForThisGraph = queryParams.filter(function(paramTuple) {
return paramTuple.startsWith(prefixOfThisIndex);
}).length;
if (numberOfParamsForThisGraph == 0) {
return [];
}
var paramsForThisGraph = queryParams.splice(0, numberOfParamsForThisGraph);
paramsForThisGraph = paramsForThisGraph.map(function(paramTuple) {
return paramTuple.substring(prefixOfThisIndex.length);
});
var options = this.parseQueryParamsOfOneGraph(paramsForThisGraph);
var optionAccumulator = this.fetchOptionsFromOrderedParams(queryParams, graphIndex + 1);
optionAccumulator.unshift(options);
return optionAccumulator;
};
Prometheus.Page.QueryParamHelper.prototype.parseQueryParamsOfOneGraph = function(queryParams) {
var options = {};
queryParams.forEach(function(tuple) {
var optionNameAndValue = tuple.split('=');
var optionName = optionNameAndValue[0];
var optionValue = decodeURIComponent(optionNameAndValue[1].replace(/\+/g, " "));
if (optionName == "tab") {
optionValue = parseInt(optionValue); // tab is integer
}
options[optionName] = optionValue;
});
return options;
};
Prometheus.Page.QueryParamHelper.prototype.queryParamPrefix = function(index) {
return "g" + index + ".";
};
Prometheus.Page.QueryParamHelper.prototype.generateQueryObject = function(graphOptions, index) {
var prefix = this.queryParamPrefix(index);
var queryObject = {};
Object.keys(graphOptions).forEach(function(key) {
queryObject[prefix + key] = graphOptions[key];
});
return queryObject;
};
// These two methods (isDeprecatedGraphURL and redirectToMigratedURL)
// are added only for backward compatibility to old query format.
function isDeprecatedGraphURL() {
if (window.location.hash.length == 0) {
return false;
}
var decodedFragment = decodeURIComponent(window.location.hash);
try {
JSON.parse(decodedFragment.substr(1)); // drop the hash #
} catch (e) {
return false;
}
return true;
}
function redirectToMigratedURL() {
var decodedFragment = decodeURIComponent(window.location.hash);
var graphOptions = JSON.parse(decodedFragment.substr(1)); // drop the hash #
var queryObject = {};
graphOptions.map(function(options, index){
var prefix = "g" + index + ".";
Object.keys(options).forEach(function(key) {
queryObject[prefix + key] = options[key];
});
});
var query = $.param(queryObject);
window.location = PATH_PREFIX + "/graph?" + query;
}
/**
* Query History helper functions
* **/
const queryHistory = {
isEnabled: function() {
return JSON.parse(localStorage.getItem('enable-query-history'))
},
bindHistoryEvents: function(graph) {
const targetEl = $('div.query-history');
const icon = $(targetEl).children('i');
targetEl.off('click');
if (queryHistory.isEnabled()) {
this.toggleOn(targetEl);
}
targetEl.on('click', function() {
if (icon.hasClass('glyphicon-unchecked')) {
queryHistory.toggleOn(targetEl);
} else if (icon.hasClass('glyphicon-check')) {
queryHistory.toggleOff(targetEl);
}
});
},
handleHistory: function(graph) {
const query = graph.expr.val();
const isSimpleMetric = pageConfig.allMetrics.indexOf(query) !== -1;
if (isSimpleMetric) {
return;
}
let parsedQueryHistory = JSON.parse(localStorage.getItem('history'));
const hasStoredQuery = parsedQueryHistory.indexOf(query) !== -1;
if (hasStoredQuery) {
parsedQueryHistory.splice(parsedQueryHistory.indexOf(query), 1);
}
parsedQueryHistory.push(query);
const queryCount = parsedQueryHistory.length;
parsedQueryHistory = parsedQueryHistory.slice(queryCount - 50, queryCount);
localStorage.setItem('history', JSON.stringify(parsedQueryHistory));
pageConfig.queryHistMetrics = parsedQueryHistory;
if (queryHistory.isEnabled()) {
this.updateTypeaheadMetricSet(pageConfig.queryHistMetrics.concat(pageConfig.allMetrics));
}
},
toggleOn: function(targetEl) {
this.updateTypeaheadMetricSet(pageConfig.queryHistMetrics.concat(pageConfig.allMetrics));
$(targetEl).children('i').removeClass('glyphicon-unchecked').addClass('glyphicon-check');
targetEl.addClass('is-checked');
localStorage.setItem('enable-query-history', true);
},
toggleOff: function(targetEl) {
this.updateTypeaheadMetricSet(pageConfig.allMetrics);
$(targetEl).children('i').removeClass('glyphicon-check').addClass('glyphicon-unchecked');
targetEl.removeClass('is-checked');
localStorage.setItem('enable-query-history', false);
},
updateTypeaheadMetricSet: function(metricSet) {
pageConfig.graphs.forEach(function(graph) {
if (graph.expr.data('typeahead')) {
graph.expr.data('typeahead').source = metricSet;
}
});
}
};
// Defers invocation of fn for waitPeriod if returned function is called repeatedly
function debounce(fn, waitPeriod) {
var timeout;
return function() {
clearTimeout(timeout);
var args = arguments;
var scope = this;
function invokeFn() {
return fn.apply(scope, args);
}
timeout = setTimeout(invokeFn, waitPeriod);
};
}
function escapeHTML(string) {
var entityMap = {
"&": "&amp;",
"<": "&lt;",
">": "&gt;",
'"': '&quot;',
"'": '&#39;',
"/": '&#x2F;'
};
return String(string).replace(/[&<>"'\/]/g, function (s) {
return entityMap[s];
});
}
function init() {
$.ajaxSetup({
cache: false
});
$.ajax({
url: PATH_PREFIX + "/static/js/graph/graph_template.handlebar?v=" + BUILD_VERSION,
success: function(data) {
graphTemplate = data;
Mustache.parse(data);
if (isDeprecatedGraphURL()) {
redirectToMigratedURL();
} else {
var Page = new Prometheus.Page();
Page.init();
}
}
});
}
$(init);