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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.color = d3.scale.category20();
20
21 BwDrawer.xAxis = d3.svg.axis()
22     .scale(BwDrawer.x)
23     .orient("bottom");
24
25 BwDrawer.yAxis = d3.svg.axis()
26     .scale(BwDrawer.y)
27     .orient("left")
28     .tickFormat(function(d) { return (d == 0) ? "" : BwDrawer.bwFormatter(Math.abs(d)) + " Mbit/s " + ((d > 0) ? "in" : "out"); });
29
30 BwDrawer.area = d3.svg.area()
31     .x(function(d) { return BwDrawer.x(d.date); })
32     .y0(function(d) { return BwDrawer.y(d.y0); })
33     .y1(function(d) { return BwDrawer.y(d.y0 + d.y); });
34
35 BwDrawer.read_stack = d3.layout.stack()
36     .values(function(d) { return d.read_values; });
37 BwDrawer.write_stack = d3.layout.stack()
38     .values(function(d) { return d.write_values; });
39
40 BwDrawer.onionoo_url = "https://onionoo.torproject.org/bandwidth?type=relay&contact=adminsys@nos-oignons.net";
41
42 BwDrawer.periods = [
43     { id: "3_days", label: L10n.t_3_days },
44     { id: "1_week", label: L10n.t_1_week },
45     { id: "1_month", label: L10n.t_1_month },
46     { id: "3_months", label: L10n.t_3_months },
47     { id: "1_year", label: L10n.t_1_year },
48   ];
49
50 BwDrawer.extract_values = function(history, interval, minTime, maxTime) {
51   var values = [];
52   var first = history ? BwDrawer.parseTime(history.first) : maxTime;
53   var last = history ? BwDrawer.parseTime(history.last) : minTime;
54   var i = 0;
55   for (var current = minTime; current <= maxTime; current = d3.time.second.offset(current, interval)) {
56     values.push({ date: current,
57                   y: (first <= current && current <= last) ? history.factor * history.values[i++] * 8 / 1000000 : 0
58                 });
59   }
60   return values;
61 }
62
63 BwDrawer.draw_bandwidth_graph = function(raw_data, selector, period) {
64   var update_period;
65
66   var svg = d3.select(selector).append("svg")
67       .attr("width", BwDrawer.width + BwDrawer.margin.left + BwDrawer.margin.right)
68       .attr("height", BwDrawer.height + BwDrawer.margin.top + BwDrawer.margin.bottom)
69     .append("g")
70       .attr("transform", "translate(" + BwDrawer.margin.left + "," + BwDrawer.margin.top + ")");
71
72   var form = d3.select(selector).append("form")
73       .attr("action", "#");
74   BwDrawer.periods.forEach(function(p) {
75     var div = form.append("div");
76     var radio = div.append("input")
77       .attr("type", "radio")
78       .attr("name", "period")
79       .attr("id", "period_" + p.id)
80       .on("click", function() { update_period(p.id); });
81     div.append("label")
82       .attr("for", "period_" + p.id)
83       .text(p.label);
84     if (p.id == BwDrawer.periods[0].id) {
85       radio.attr("checked", true);
86     }
87   });
88
89   var valid_fingerprints = [];
90   nos_oignons_relays.forEach(function(r) {
91     var relay_data = raw_data["relays"].filter(function(d) { return d.fingerprint == r.fingerprint; })[0];
92     valid_fingerprints.push(r.fingerprint);
93   });
94   BwDrawer.color.domain(valid_fingerprints);
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.max(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 };