Girish Ramakrishnan
70 lines
2.3 KiB
JavaScript
70 lines
2.3 KiB
JavaScript
import assert from 'node:assert';
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import BoxError from './boxerror.js';
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import debugModule from 'debug';
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import safe from 'safetydance';
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import shellModule from './shell.js';
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const debug = debugModule('box:df');
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const shell = shellModule('df');
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// binary units (non SI) 1024 based
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function prettyBytes(bytes) {
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assert.strictEqual(typeof bytes, 'number');
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const i = Math.floor(Math.log(bytes) / Math.log(1024)),
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sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
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return (bytes / Math.pow(1024, i)).toFixed(2) * 1 + '' + sizes[i];
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}
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function parseLine(line) {
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const parts = line.split(/\s+/, 7); // this way the mountpoint can have spaces in it
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return {
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filesystem: parts[0],
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type: parts[1],
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size: Number.parseInt(parts[2], 10),
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used: Number.parseInt(parts[3], 10),
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available: Number.parseInt(parts[4], 10),
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capacity: Number.parseInt(parts[5], 10) / 100, // note: this has a trailing %
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mountpoint: parts[6]
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};
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}
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async function filesystems() {
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const [error, output] = await safe(shell.spawn('df', ['-B1', '--output=source,fstype,size,used,avail,pcent,target'], { encoding: 'utf8', timeout: 5000 }));
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if (error) {
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debug(`filesystems: df command failed. error: ${error}\n stdout: ${error.stdout}\n stderr: ${error.stderr}`);
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throw new BoxError(BoxError.FS_ERROR, `Error running df: ${error.message}`);
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}
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const lines = output.trim().split('\n').slice(1); // discard header
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const result = [];
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for (const line of lines) {
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result.push(parseLine(line));
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}
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return result;
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}
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async function file(filename) {
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assert.strictEqual(typeof filename, 'string');
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if (!safe.fs.existsSync(filename)) throw new BoxError(BoxError.NOT_FOUND, `Path ${filename} does not exist`);
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const [error, output] = await safe(shell.spawn('df', ['-B1', '--output=source,fstype,size,used,avail,pcent,target', filename], { encoding: 'utf8', timeout: 5000 }));
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if (error) {
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debug(`file: df command failed. error: ${error}\n stdout: ${error.stdout}\n stderr: ${error.stderr}`);
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throw new BoxError(BoxError.FS_ERROR, `Error running df: ${error.message}`);
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}
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const lines = output.trim().split('\n').slice(1); // discard header
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return parseLine(lines[0]);
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}
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export default {
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filesystems,
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file,
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prettyBytes
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};
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