assets/bw_graphs.js

   1 function BwDrawer(selector) {
   2   this.selector = selector;
   3 };
   4 BwDrawer.prototype = new BwDrawer();
   5
   6 BwDrawer.margin = {top: 50, right: 10, bottom: 90, left: 130};
   7 BwDrawer.width = 600 - BwDrawer.margin.left - BwDrawer.margin.right;
   8 BwDrawer.height = 400 - BwDrawer.margin.top - BwDrawer.margin.bottom;
   9
  10 BwDrawer.parseTime = d3.time.format("%Y-%m-%d %H:%M:%S").parse;
  11 BwDrawer.bwFormatter = d3.format(".f");
  12
  13 BwDrawer.x = d3.time.scale()
  14     .range([0, BwDrawer.width]);
  15
  16 BwDrawer.y = d3.scale.linear()
  17     .range([BwDrawer.height, 0]);
  18
  19 BwDrawer.xAxis = d3.svg.axis()
  20     .scale(BwDrawer.x)
  21     .orient("bottom");
  22
  23 BwDrawer.yAxis = d3.svg.axis()
  24     .scale(BwDrawer.y)
  25     .orient("left")
  26     .tickFormat(function(d) { return (d == 0) ? "" : BwDrawer.bwFormatter(Math.abs(d)) + " Mbit/s " + ((d > 0) ? "in" : "out"); });
  27
  28 BwDrawer.area = d3.svg.area()
  29     .x(function(d) { return BwDrawer.x(d.date); })
  30     .y0(function(d) { return BwDrawer.y(d.y0); })
  31     .y1(function(d) { return BwDrawer.y(d.y0 + d.y); });
  32
  33 BwDrawer.read_stack = d3.layout.stack()
  34     .values(function(d) { return d.read_values; });
  35 BwDrawer.write_stack = d3.layout.stack()
  36     .values(function(d) { return d.write_values; });
  37
  38 BwDrawer.onionoo_url = "https://onionoo.torproject.org/bandwidth?type=relay&contact=adminsys@nos-oignons.net";
  39
  40 BwDrawer.periods = [
  41     { id: "1_month", label: L10n.t_1_month },
  42     { id: "3_months", label: L10n.t_3_months },
  43     { id: "1_year", label: L10n.t_1_year },
  44   ];
  45
  46 BwDrawer.extract_values = function(history, interval, minTime, maxTime) {
  47   var values = [];
  48   var first = history ? BwDrawer.parseTime(history.first) : maxTime;
  49   var last = history ? BwDrawer.parseTime(history.last) : minTime;
  50   var i = 0;
  51   for (var current = minTime; current <= maxTime; current = d3.time.second.offset(current, interval)) {
  52     values.push({ date: current,
  53                   y: (first <= current && current <= last) ? history.factor * history.values[i++] * 8 / 1000000 : 0
  54                 });
  55   }
  56   return values;
  57 }
  58
  59 BwDrawer.color = d3.scale.ordinal();
  60 BwDrawer.color.domain(nos_oignons_relays.map(function(r) {return r.fingerprint}));
  61 BwDrawer.color.range(nos_oignons_relays.map(function(r) {return r.color}));
  62
  63 BwDrawer.draw_bandwidth_graph = function(raw_data, selector, period) {
  64   // Purge non running relays
  65   raw_data.relays.forEach(function(r, i) {
  66     if (typeof r.read_history === 'undefined' || typeof r.write_history === 'undefined') {
  67       raw_data.relays.splice(i, 1);
  68     }
  69   });
  70
  71   var update_period;
  72
  73   var svg = d3.select(selector).append("svg")
  74       .attr("width", BwDrawer.width + BwDrawer.margin.left + BwDrawer.margin.right)
  75       .attr("height", BwDrawer.height + BwDrawer.margin.top + BwDrawer.margin.bottom)
  76     .append("g")
  77       .attr("transform", "translate(" + BwDrawer.margin.left + "," + BwDrawer.margin.top + ")");
  78
  79   var form = d3.select(selector).append("form")
  80       .attr("action", "#");
  81   BwDrawer.periods.forEach(function(p) {
  82     var div = form.append("div");
  83     var radio = div.append("input")
  84       .attr("type", "radio")
  85       .attr("name", "period")
  86       .attr("id", "period_" + p.id)
  87       .on("click", function() { update_period(p.id); });
  88     div.append("label")
  89       .attr("for", "period_" + p.id)
  90       .text(p.label);
  91     if (p.id == BwDrawer.periods[0].id) {
  92       radio.attr("checked", true);
  93     }
  94   });
  95
  96   var bw_data = {};
  97   BwDrawer.periods.map(function(p) { return p.id; }).forEach(function(period) {
  98     var interval = d3.max(raw_data.relays, function(d) {
  99       return d['read_history'][period] && d['read_history'][period].interval;
 100     });
 101     raw_data.relays.forEach(function(d) {
 102       if ((d['read_history'][period] && d['read_history'][period].interval != interval) ||
 103           (d['write_history'][period] && d['write_history'][period].interval != interval)) {
 104         throw "PANIC: Different interval for different relays in the same time period.";
 105       }
 106     });
 107     var minTime = d3.min(raw_data.relays, function(d) {
 108       return d['read_history'][period] && BwDrawer.parseTime(d['read_history'][period].first) &&
 109              d['write_history'][period] && BwDrawer.parseTime(d['write_history'][period].first);
 110     });
 111     var maxTime = d3.min(raw_data.relays, function(d) {
 112       return d['read_history'][period] && BwDrawer.parseTime(d['read_history'][period].last) &&
 113              d['write_history'][period] && BwDrawer.parseTime(d['write_history'][period].last);
 114     });
 115
 116     var maxReadBandwidth = 0;
 117     var maxWriteBandwidth = 0;
 118
 119     var values = BwDrawer.color.domain().map(function(fingerprint) {
 120       var relay_data = raw_data["relays"].filter(function(d) { return d.fingerprint == fingerprint; })[0];
 121       var read_history = relay_data['read_history'][period];
 122       var write_history = relay_data['write_history'][period];
 123       var read_values = BwDrawer.extract_values(read_history, interval, minTime, maxTime);
 124       var write_values = BwDrawer.extract_values(write_history, interval, minTime, maxTime);
 125
 126       maxReadBandwidth = maxReadBandwidth + d3.max(read_values, function(d) { return d.y; });
 127       maxWriteBandwidth = maxWriteBandwidth + d3.max(write_values, function(d) { return d.y; });
 128
 129       return {
 130         fingerprint: fingerprint,
 131         read_values: read_values,
 132         write_values: write_values.map(function(d) { d.y = -d.y; return d })
 133       };
 134     });
 135     bw_data[period] = { minTime: minTime,
 136                         maxTime: maxTime,
 137                         maxReadBandwidth: maxReadBandwidth,
 138                         maxWriteBandwidth: maxWriteBandwidth,
 139                         values: values };
 140   });
 141
 142   BwDrawer.y.domain([-d3.max(d3.values(bw_data), function(d) { return d.maxWriteBandwidth; }),
 143             d3.max(d3.values(bw_data), function(d) { return d.maxReadBandwidth; })]);
 144
 145   var initial_period = BwDrawer.periods[0].id;
 146
 147   BwDrawer.x.domain([bw_data[initial_period].minTime, bw_data[initial_period].maxTime]);
 148
 149   var read_graph = svg.selectAll(".read_graph")
 150       .data(BwDrawer.read_stack(bw_data[initial_period].values))
 151     .enter().append("path")
 152       .attr("class", "read_graph area")
 153       .attr("d", function(d) { return BwDrawer.area(d.read_values); })
 154       .style("fill", function(d) { return BwDrawer.color(d.fingerprint); });
 155
 156   var write_graph = svg.selectAll(".write_graph")
 157       .data(BwDrawer.write_stack(bw_data[initial_period].values))
 158     .enter().append("path")
 159       .attr("class", "write_graph area")
 160       .attr("d", function(d) { return BwDrawer.area(d.write_values); })
 161       .style("fill", function(d) { return BwDrawer.color(d.fingerprint); });
 162
 163   update_period = function(period) {
 164     BwDrawer.x.domain([bw_data[period].minTime, bw_data[period].maxTime]);
 165     var t = svg.transition().duration(300);
 166     t.select(".x.axis").call(BwDrawer.xAxis);
 167     t.selectAll(".read_graph").style("fill-opacity", 0);
 168     t.selectAll(".write_graph").style("fill-opacity", 0);
 169     t.each("end", function() {
 170       d3.selectAll(".read_graph").data(BwDrawer.read_stack(bw_data[period].values));
 171       d3.selectAll(".write_graph").data(BwDrawer.write_stack(bw_data[period].values));
 172       d3.selectAll(".read_graph").attr("d", function(d) { return BwDrawer.area(d.read_values); })
 173       d3.selectAll(".write_graph")
 174         .attr("d", function(d) { return BwDrawer.area(d.write_values); })
 175       var t2 = svg.transition().duration(100);
 176       t2.selectAll(".read_graph").style("fill-opacity", 1);
 177       t2.selectAll(".write_graph").style("fill-opacity", 1);
 178     });
 179     d3.selectAll(".x.axis text")
 180       .style("text-anchor", "end")
 181       .attr("transform", "rotate(-90) translate(-10, 0)");
 182   }
 183
 184   svg.append("g")
 185       .attr("class", "x axis")
 186       .attr("transform", "translate(0," + BwDrawer.height + ")")
 187       .call(BwDrawer.xAxis)
 188         .selectAll("text")
 189         .style("text-anchor", "end")
 190         .attr("transform", "rotate(-90) translate(-10, 0)");
 191
 192   svg.append("g")
 193       .attr("class", "y axis")
 194       .call(BwDrawer.yAxis);
 195
 196   var legend = svg.selectAll(".legend")
 197       .data(BwDrawer.color.domain().slice().reverse())
 198     .enter().append("g")
 199       .attr("class", "legend")
 200       .attr("transform", function(d, i) { return "translate(0," + ((i * 20) - BwDrawer.margin.top) + ")"; });
 201
 202   legend.append("rect")
 203       .attr("x", BwDrawer.width - 18)
 204       .attr("width", 18)
 205       .attr("height", 18)
 206       .style("fill", BwDrawer.color);
 207
 208   legend.append("text")
 209       .attr("x", BwDrawer.width - 24)
 210       .attr("y", 9)
 211       .attr("dy", ".35em")
 212       .style("text-anchor", "end")
 213       .text(function(d) {
 214         return nos_oignons_relays.filter(function(r) { return r.fingerprint == d; })[0].name;
 215       });
 216 };
 217
 218 BwDrawer.prototype.draw = function() {
 219   var selector = this.selector;
 220   d3.json(BwDrawer.onionoo_url, function(error, raw_data) {
 221     d3.select(selector).text("");
 222     BwDrawer.draw_bandwidth_graph(raw_data, selector);
 223   });
 224 };