This app provides monitoring and information features for the common freifunk user and the technical stuff of a freifunk community.
Code base is taken from a TUM Practical Course project and added here to see if Freifunk Altdorf can use it.
https://www.freifunk-altdorf.de
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51 lines
1.2 KiB
51 lines
1.2 KiB
'use strict'; |
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const bufferStream = require('./buffer-stream'); |
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function getStream(inputStream, opts) { |
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if (!inputStream) { |
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return Promise.reject(new Error('Expected a stream')); |
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} |
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opts = Object.assign({maxBuffer: Infinity}, opts); |
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const maxBuffer = opts.maxBuffer; |
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let stream; |
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let clean; |
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const p = new Promise((resolve, reject) => { |
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const error = err => { |
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if (err) { // null check |
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err.bufferedData = stream.getBufferedValue(); |
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} |
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reject(err); |
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}; |
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stream = bufferStream(opts); |
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inputStream.once('error', error); |
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inputStream.pipe(stream); |
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stream.on('data', () => { |
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if (stream.getBufferedLength() > maxBuffer) { |
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reject(new Error('maxBuffer exceeded')); |
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} |
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}); |
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stream.once('error', error); |
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stream.on('end', resolve); |
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clean = () => { |
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// some streams doesn't implement the `stream.Readable` interface correctly |
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if (inputStream.unpipe) { |
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inputStream.unpipe(stream); |
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} |
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}; |
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}); |
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p.then(clean, clean); |
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return p.then(() => stream.getBufferedValue()); |
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} |
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module.exports = getStream; |
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module.exports.buffer = (stream, opts) => getStream(stream, Object.assign({}, opts, {encoding: 'buffer'})); |
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module.exports.array = (stream, opts) => getStream(stream, Object.assign({}, opts, {array: true}));
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