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43 lines
1.2 KiB
43 lines
1.2 KiB
4 years ago
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const crypto = require('crypto');
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const { debugLog } = require('./utilities');
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/**
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* memHandler - In memory upload handler
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* @param {Object} options
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* @param {String} fieldname
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* @param {String} filename
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* @returns {Object}
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*/
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module.exports = (options, fieldname, filename) => {
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const buffers = [];
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const hash = crypto.createHash('md5');
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let fileSize = 0;
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let completed = false;
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const getBuffer = () => Buffer.concat(buffers, fileSize);
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return {
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dataHandler: (data) => {
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if (completed === true) {
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debugLog(options, `Error: got ${fieldname}->${filename} data chunk for completed upload!`);
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return;
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}
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buffers.push(data);
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hash.update(data);
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fileSize += data.length;
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debugLog(options, `Uploading ${fieldname}->${filename}, bytes:${fileSize}...`);
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},
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getBuffer: getBuffer,
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getFilePath: () => '',
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getFileSize: () => fileSize,
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getHash: () => hash.digest('hex'),
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complete: () => {
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debugLog(options, `Upload ${fieldname}->${filename} completed, bytes:${fileSize}.`);
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completed = true;
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return getBuffer();
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},
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cleanup: () => { completed = true; },
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getWritePromise: () => Promise.resolve()
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};
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};
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