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Refactor graph.js

This commit is contained in:
Bora Tunca 2016-08-05 16:35:38 +02:00
parent 3e18d86d8a
commit 445fac56e0
1 changed files with 141 additions and 89 deletions
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230
web/ui/static/js/graph.js
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@ -1,16 +1,18 @@
var Prometheus = Prometheus || {};
var graphs = [];
var graphTemplate;
var SECOND = 1000;
Handlebars.registerHelper('pathPrefix', function() { return PATH_PREFIX; });
Prometheus.Graph = function(element, options) {
Prometheus.Graph = function(element, options, handleChange, handleRemove) {
this.el = element;
this.graphHTML = null;
this.options = options;
this.changeHandler = null;
this.handleChange = handleChange;
this.handleRemove = function() {
handleRemove(this);
};
this.rickshawGraph = null;
this.data = [];
@ -69,7 +71,7 @@ Prometheus.Graph.prototype.initialize = function() {
};
$(this).on('keyup input', function() { resizeTextarea(this); });
});
self.expr.change(storeGraphOptionsInURL);
self.expr.change(self.handleChange);
self.rangeInput = self.queryForm.find("input[name=range_input]");
self.stackedBtn = self.queryForm.find(".stacked_btn");
@ -85,7 +87,7 @@ Prometheus.Graph.prototype.initialize = function() {
self.tabs.on("shown.bs.tab", function(e) {
var target = $(e.target);
self.options.tab = target.parent().index();
storeGraphOptionsInURL();
self.handleChange();
if ($("#" + target.attr("aria-controls")).hasClass("reload")) {
self.submitQuery();
}
@ -208,10 +210,6 @@ Prometheus.Graph.prototype.populateInsertableMetrics = function() {
});
};
Prometheus.Graph.prototype.onChange = function(handler) {
this.changeHandler = handler;
};
Prometheus.Graph.prototype.getOptions = function() {
var self = this;
var options = {};
@ -544,7 +542,7 @@ Prometheus.Graph.prototype.updateGraph = function() {
legend: legend
});
self.changeHandler();
self.handleChange();
};
Prometheus.Graph.prototype.resizeGraph = function() {
@ -622,79 +620,10 @@ Prometheus.Graph.prototype.handleConsoleResponse = function(data, textStatus) {
Prometheus.Graph.prototype.remove = function() {
var self = this;
$(self.graphHTML).remove();
graphs = graphs.filter(function(e) {return e !== self});
storeGraphOptionsInURL();
self.handleRemove();
self.handleChange();
};
function parseGraphOptionsFromURL() {
var allGraphsOptions = [];
var queryStringBeginning = window.location.href.indexOf('?')
if(queryStringBeginning == -1) {
return allGraphsOptions;
}
var paramTuples = window.location.href.slice(queryStringBeginning + 1).split('&');
paramTuples.forEach(function(tuple){
var paramNameAndValue = tuple.split('=');
var paramName = paramNameAndValue[0]
var paramValue = decodeURIComponent(paramNameAndValue[1])
var indexAndName = paramName.split('.');
var optionName = indexAndName[1];
if(optionName == "end_input"){
paramValue = paramValue.replace("+", " ") // workaround jquery.param space plus
}
if(optionName == "tab"){
paramValue = parseInt(paramValue) // tab is int
}
var indexStr = indexAndName[0].substring(1);
if(isNaN(indexStr) == false) {
var index = parseInt(indexStr);
if(typeof allGraphsOptions[index] === 'undefined') {
allGraphsOptions[index] = {};
}
allGraphsOptions[index][optionName] = paramValue;
}
});
return allGraphsOptions
}
// NOTE: This needs to be kept in sync with /util/strutil/strconv.go:GraphLinkForExpression
function storeGraphOptionsInURL() {
var allGraphsOptions = [];
for (var i = 0; i < graphs.length; i++) {
allGraphsOptions.push(graphs[i].getOptions());
}
var queryString = generateQueryString(allGraphsOptions);
history.pushState({}, "", "graph?" + queryString);
}
function generateQueryString(allGraphsOptions) {
return allGraphsOptions.map(function(graphsOptions, index){
var queryObject = {}
Object.keys(graphsOptions).map(function(key){
queryObject["g" + index + "." + key] = graphsOptions[key];
});
return $.param(queryObject)
}).join("&");
}
function addGraph(options) {
var graph = new Prometheus.Graph($("#graph_container"), options);
graphs.push(graph);
graph.onChange(function() {
storeGraphOptionsInURL();
});
$(window).resize(function() {
graph.resizeGraph();
});
}
function escapeHTML(string) {
var entityMap = {
"&": "&amp;",
@ -710,6 +639,135 @@ function escapeHTML(string) {
});
}
Prometheus.Page = function() {
this.graphs = [];
};
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)
);
this.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 = this.graphs.map(function(graph, index) {
var graphOptions = graph.getOptions();
var queryParamHelper = new Prometheus.Page.QueryParamHelper();
var queryObject = queryParamHelper.generateQueryObject(graphOptions, index);
return $.param(queryObject);
}, this).join("&");
history.pushState({}, "", "graph?" + queryString);
};
Prometheus.Page.prototype.removeGraph = function(graph) {
this.graphs = this.graphs.filter(function(g) {return g !== graph});
};
Prometheus.Page.QueryParamHelper = function() {};
Prometheus.Page.QueryParamHelper.prototype.parseQueryParams = function(queryParams) {
var orderedQueryParams = this.filterInvalidParams(queryParams).sort();
return this.fetchOptionsFromOrderedParams(orderedQueryParams, 0);
};
Prometheus.Page.QueryParamHelper.queryParamFormat = /^g\d+\..+=.+$/;
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]);
optionValue = optionValue.replace(/\+/g, " "); // $.param turns spaces into pluses
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;
};
function init() {
$.ajaxSetup({
cache: false
@ -719,14 +777,8 @@ function init() {
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({}); });
var Page = new Prometheus.Page();
Page.init();
}
});
}