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andrestaltz / ssb-to-graphml



Tree: 0d08a7a93f1730f755e4687e00a958641b01cb82

Files: 0d08a7a93f1730f755e4687e00a958641b01cb82 / index.js

2334 bytesRaw
1const ssbKeys = require('ssb-keys');
2const ssbConfigInject = require('ssb-config/inject');
3const path = require('path');
4const pify = require('pify');
5
6function startScuttlebot() {
7 const config = ssbConfigInject();
8 config.keys = ssbKeys.loadOrCreateSync(path.join(config.path, 'secret'));
9 config.port = 8198;
10 config.logging.level = '';
11 return require('scuttlebot/index')
12 .use(require('scuttlebot/plugins/plugins'))
13 .use(require('scuttlebot/plugins/master'))
14 .use(require('scuttlebot/plugins/replicate'))
15 .use(require('ssb-friends'))
16 .use(require('ssb-names'))
17 .call(null, config);
18}
19
20async function buildGraph(sbot) {
21 const hopsData = await pify(sbot.friends.hops)();
22 const nodes = Object.keys(hopsData);
23 const nodeLabels = {};
24 for (let key of nodes) {
25 try {
26 nodeLabels[key] = await pify(sbot.names.getSignifier)(key);
27 } catch (error) {
28 nodeLabels[key] = '';
29 }
30 }
31 const follows = await pify(sbot.friends.get)();
32 const edges = Object.keys(follows)
33 .map(orig =>
34 Object.keys(follows[orig])
35 .filter(dest => follows[orig][dest] === true)
36 .map(dest => [orig, dest]),
37 )
38 .reduce((accumulated, current) => accumulated.concat(current), []);
39 return {nodes, edges, nodeLabels};
40}
41
42function* toGraphml({nodes, edges, nodeLabels}) {
43 yield '<?xml version="1.0" encoding="UTF-8"?>\n';
44 yield `<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
45 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
46 xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
47 http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">\n`;
48 yield ' <graph id="G" edgedefault="directed">\n';
49 yield ' <key id="d0" for="node" attr.name="label" attr.type="string"/>\n';
50 for (let id of nodes) {
51 const name = nodeLabels[id];
52 if (name) {
53 yield ` <node id="${id}">\n`;
54 yield ` <data key="d0">${encodeURIComponent(name)}</data>\n`;
55 yield ` </node>\n`;
56 } else {
57 yield ` <node id="${id}"/>\n`;
58 }
59 }
60 for (let [orig, dest] of edges) {
61 yield ` <edge source="${orig}" target="${dest}"/>\n`;
62 }
63 yield ' </graph>\n</graphml>';
64}
65
66module.exports = async function run() {
67 const sbot = startScuttlebot();
68 const graph = await buildGraph(sbot);
69 sbot.close();
70 return toGraphml(graph);
71};
72

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