Files: a9195c696583b3d711feccb0b9ec40bc2ea10f1e / app / page / network.js
5701 bytesRaw
1 | const nest = require('depnest') |
2 | const { h, Value, Dict, onceTrue, computed, watch, watchAll, throttle } = require('mutant') |
3 | const Chart = require('chart.js') |
4 | const pull = require('pull-stream') |
5 | |
6 | const MINUTE = 60 * 1000 |
7 | const DAY = 24 * 60 * MINUTE |
8 | |
9 | const GRAPH_Y_STEP = 50 |
10 | const GRAPH_Y_MIN = 100 |
11 | |
12 | exports.gives = nest({ |
13 | 'app.html.menuItem': true, |
14 | 'app.page.network': true |
15 | }) |
16 | |
17 | exports.needs = nest({ |
18 | 'about.html.avatar': 'first', |
19 | 'app.sync.goTo': 'first', |
20 | 'sbot.obs.connection': 'first', |
21 | 'sbot.obs.localPeers': 'first' |
22 | }) |
23 | |
24 | exports.create = function (api) { |
25 | return nest({ |
26 | 'app.html.menuItem': menuItem, |
27 | 'app.page.network': networkPage |
28 | }) |
29 | |
30 | function menuItem () { |
31 | return h('a', { |
32 | 'ev-click': () => api.app.sync.goTo({ page: 'network' }) |
33 | }, '/network') |
34 | } |
35 | |
36 | function networkPage (location) { |
37 | const minsPerStep = 10 |
38 | const scale = 1 * DAY |
39 | |
40 | const state = buildState({ api, minsPerStep, scale }) |
41 | const canvas = h('canvas', { height: 500, width: 1200, style: { height: '500px', width: '1200px' } }) |
42 | |
43 | const page = h('NetworkPage', { title: '/network' }, [ |
44 | h('div.container', [ |
45 | h('h1', 'Network'), |
46 | h('section', [ |
47 | h('h2', 'Local Peers'), |
48 | computed(state.localPeers, peers => { |
49 | if (!peers.length) return h('p', 'There aren\'t currently any peers on the same wifi / LAN as you') |
50 | |
51 | return peers.map(peer => api.about.html.avatar(peer)) |
52 | }) |
53 | ]), |
54 | h('section', [ |
55 | h('h2', 'Received'), |
56 | h('p', `Messages received per ${minsPerStep}-minute block over the last ${scale / DAY} days`), |
57 | canvas |
58 | ]) |
59 | ]) |
60 | ]) |
61 | |
62 | initialiseChart({ canvas, state }) |
63 | |
64 | return page |
65 | } |
66 | } |
67 | |
68 | function initialiseChart ({ canvas, state: { data, range } }) { |
69 | var chart = new Chart(canvas.getContext('2d'), chartConfig(range)) |
70 | |
71 | watch(range, ({ lower, upper }) => { |
72 | // set horizontal scale |
73 | chart.options.scales.xAxes[0].time.min = lower |
74 | chart.options.scales.xAxes[0].time.max = upper |
75 | chart.update() |
76 | }) |
77 | |
78 | watchAll([throttle(data, 300), range], (data, { lower, upper }) => { |
79 | const _data = Object.keys(data) |
80 | .sort((a, b) => a < b ? -1 : +1) |
81 | .map(ts => { |
82 | return { |
83 | t: Number(ts), // NOTE - might need to offset by a half-step ? |
84 | y: data[ts] |
85 | } |
86 | }) |
87 | |
88 | // update chard data |
89 | chart.data.datasets[0].data = _data |
90 | |
91 | // scales the height of the graph (to the visible data)! |
92 | const slice = _data |
93 | .filter(d => d.t >= lower && d.t < upper) |
94 | .map(d => d.y) |
95 | .sort((a, b) => a > b ? -1 : +1) |
96 | |
97 | var h = slice[0] |
98 | if (!h || h < GRAPH_Y_MIN) h = GRAPH_Y_MIN // min-height |
99 | else h = h + (GRAPH_Y_STEP - h % GRAPH_Y_STEP) // round height to multiples of GRAPH_Y_STEP |
100 | chart.options.scales.yAxes[0].ticks.max = h |
101 | |
102 | chart.update() |
103 | }) |
104 | } |
105 | |
106 | // ///// HELPERS ///// |
107 | |
108 | function buildState ({ api, minsPerStep, scale }) { |
109 | const data = Dict({ |
110 | [toTimeBlock(Date.now(), minsPerStep) + minsPerStep * MINUTE]: 0, |
111 | [toTimeBlock(Date.now(), minsPerStep) + minsPerStep * MINUTE - scale]: 0 |
112 | }) |
113 | onceTrue(api.sbot.obs.connection, server => { |
114 | getData({ data, server, minsPerStep, scale }) |
115 | }) |
116 | |
117 | const latest = Value(toTimeBlock(Date.now(), minsPerStep)) |
118 | // start of the most recent bar |
119 | setInterval(() => { |
120 | latest.set(toTimeBlock(Date.now(), minsPerStep)) |
121 | }, minsPerStep / 4 * MINUTE) |
122 | |
123 | const range = computed([latest], (latest) => { |
124 | return { |
125 | upper: latest + minsPerStep * MINUTE, |
126 | lower: latest + minsPerStep * MINUTE - scale |
127 | } |
128 | }) |
129 | |
130 | return { |
131 | data, |
132 | range, |
133 | localPeers: throttle(api.sbot.obs.localPeers(), 1000) |
134 | } |
135 | } |
136 | |
137 | function getData ({ data, server, minsPerStep, scale }) { |
138 | const upperEnd = toTimeBlock(Date.now(), minsPerStep) + minsPerStep * MINUTE |
139 | const lowerBound = upperEnd - scale |
140 | |
141 | const query = [ |
142 | { |
143 | $filter: { |
144 | timestamp: { $gte: lowerBound } |
145 | } |
146 | }, { |
147 | $filter: { |
148 | value: { |
149 | author: { $ne: server.id } |
150 | } |
151 | } |
152 | }, { |
153 | $map: { |
154 | ts: ['timestamp'] |
155 | } |
156 | } |
157 | ] |
158 | |
159 | pull( |
160 | server.query.read({ query, live: true }), |
161 | pull.filter(m => !m.sync), |
162 | pull.map(m => toTimeBlock(m.ts, minsPerStep)), |
163 | pull.drain(ts => { |
164 | if (data.has(ts)) data.put(ts, data.get(ts) + 1) |
165 | else data.put(ts, 1) |
166 | }) |
167 | ) |
168 | } |
169 | |
170 | |
171 | function toTimeBlock (ts, minsPerStep) { |
172 | return Math.floor(ts / (minsPerStep * MINUTE)) * (minsPerStep * MINUTE) |
173 | } |
174 | |
175 | function chartConfig ({ lower, upper }) { |
176 | const barColor = 'hsla(215, 57%, 60%, 1)' |
177 | |
178 | return { |
179 | type: 'bar', |
180 | data: { |
181 | datasets: [{ |
182 | backgroundColor: barColor, |
183 | borderColor: barColor, |
184 | data: [] |
185 | }] |
186 | }, |
187 | options: { |
188 | legend: { |
189 | display: false |
190 | }, |
191 | scales: { |
192 | xAxes: [{ |
193 | type: 'time', |
194 | distribution: 'linear', |
195 | time: { |
196 | // unit: 'day', |
197 | // min: lower, |
198 | // max: upper, |
199 | // tooltipFormat: 'MMMM D', |
200 | // stepSize: 7 |
201 | unit: 'minute', |
202 | min: lower, |
203 | max: upper, |
204 | tooltipFormat: 'HH:mm', |
205 | stepSize: 4 * 60 |
206 | // stepSize: 240 |
207 | }, |
208 | bounds: 'ticks', |
209 | ticks: { |
210 | // maxTicksLimit: 4 // already disabled |
211 | }, |
212 | gridLines: { |
213 | display: false |
214 | } |
215 | // maxBarThickness: 2 |
216 | }], |
217 | |
218 | yAxes: [{ |
219 | ticks: { |
220 | min: 0, |
221 | stepSize: GRAPH_Y_STEP, |
222 | suggestedMax: GRAPH_Y_MIN |
223 | } |
224 | }] |
225 | }, |
226 | animation: { |
227 | // duration: 300 |
228 | } |
229 | } |
230 | } |
231 | } |
232 |
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