Files: 2150c96ae49e67fdcb638a88455af2c3ae8c9c53 / lib / flumeview-channels.js
929 bytesRaw
| 1 | var FlumeReduce = require('flumeview-reduce') |
| 2 | |
| 3 | exports.name = 'channels' |
| 4 | exports.version = require('../package.json').version |
| 5 | exports.manifest = { |
| 6 | stream: 'source', |
| 7 | get: 'async' |
| 8 | } |
| 9 | |
| 10 | exports.init = function (ssb, config) { |
| 11 | return ssb._flumeUse('channels', FlumeReduce(1, reduce, map)) |
| 12 | } |
| 13 | |
| 14 | function reduce (result, item) { |
| 15 | if (!result) result = {} |
| 16 | if (item) { |
| 17 | var value = result[item.channel] |
| 18 | if (!value) { |
| 19 | value = result[item.channel] = {count: 0, timestamp: 0} |
| 20 | } |
| 21 | value.count += 1 |
| 22 | if (item.timestamp > value.timestamp) { |
| 23 | value.timestamp = item.timestamp |
| 24 | } |
| 25 | } |
| 26 | return result |
| 27 | } |
| 28 | |
| 29 | function map (msg) { |
| 30 | if (msg.value.content && typeof msg.value.content.channel === 'string') { |
| 31 | var channel = msg.value.content.channel |
| 32 | if (channel.length > 0 && channel.length < 30) { |
| 33 | return { |
| 34 | channel: channel.replace(/\s/g, ''), |
| 35 | timestamp: msg.timestamp |
| 36 | } |
| 37 | } |
| 38 | } |
| 39 | } |
| 40 |
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