101 lines
3 KiB
JavaScript
101 lines
3 KiB
JavaScript
/* jshint esversion: 6 */
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const Fs = require('fs');
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const Semaphore = require('saferphore');
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const nThen = require('nthen');
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const hashesFromPinFile = (pinFile, fileName) => {
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var pins = {};
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pinFile.split('\n').filter((x)=>(x)).map((l) => JSON.parse(l)).forEach((l) => {
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switch (l[0]) {
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case 'RESET': {
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pins = {};
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//jshint -W086
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// fallthrough
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}
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case 'PIN': {
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l[1].forEach((x) => { pins[x] = 1; });
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break;
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}
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case 'UNPIN': {
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l[1].forEach((x) => { delete pins[x]; });
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break;
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}
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default: throw new Error(JSON.stringify(l) + ' ' + fileName);
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}
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});
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return Object.keys(pins);
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};
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const sizeForHashes = (hashes, dsFileSizes) => {
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let sum = 0;
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hashes.forEach((h) => {
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const s = dsFileSizes[h];
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if (typeof(s) !== 'number') {
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//console.log('missing ' + h + ' ' + typeof(s));
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} else {
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sum += s;
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}
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});
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return sum;
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};
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const sema = Semaphore.create(20);
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let dirList;
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const fileList = [];
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const dsFileSizes = {};
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const out = [];
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nThen((waitFor) => {
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Fs.readdir('./datastore', waitFor((err, list) => {
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if (err) { throw err; }
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dirList = list;
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}));
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}).nThen((waitFor) => {
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dirList.forEach((f) => {
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sema.take((returnAfter) => {
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Fs.readdir('./datastore/' + f, waitFor(returnAfter((err, list2) => {
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if (err) { throw err; }
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list2.forEach((ff) => { fileList.push('./datastore/' + f + '/' + ff); });
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})));
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});
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});
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}).nThen((waitFor) => {
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fileList.forEach((f) => {
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sema.take((returnAfter) => {
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Fs.stat(f, waitFor(returnAfter((err, st) => {
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if (err) { throw err; }
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dsFileSizes[f.replace(/^.*\/([^\/]*)\.ndjson$/, (all, a) => (a))] = st.size;
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})));
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});
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});
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}).nThen((waitFor) => {
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Fs.readdir('./pins', waitFor((err, list) => {
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if (err) { throw err; }
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dirList = list;
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}));
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}).nThen((waitFor) => {
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fileList.splice(0, fileList.length);
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dirList.forEach((f) => {
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sema.take((returnAfter) => {
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Fs.readdir('./pins/' + f, waitFor(returnAfter((err, list2) => {
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if (err) { throw err; }
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list2.forEach((ff) => { fileList.push('./pins/' + f + '/' + ff); });
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})));
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});
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});
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}).nThen((waitFor) => {
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fileList.forEach((f) => {
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sema.take((returnAfter) => {
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Fs.readFile(f, waitFor(returnAfter((err, content) => {
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if (err) { throw err; }
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const hashes = hashesFromPinFile(content.toString('utf8'), f);
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const size = sizeForHashes(hashes, dsFileSizes);
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out.push([f, Math.floor(size / (1024 * 1024))]);
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})));
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});
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});
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}).nThen(() => {
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out.sort((a,b) => (a[1] - b[1]));
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out.forEach((x) => { console.log(x[0] + ' ' + x[1] + ' MB'); });
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});
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