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Bug Fix:2093, need to clean up the temporary file

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This commit is contained in:
Sam X. Chen 2019-10-11 11:56:44 -04:00
parent f53c624b0f
commit 2737d6b23f
1 changed files with 7 additions and 2 deletions
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9
models/export.js
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@ -140,9 +140,11 @@ export class Exporter {
const getBase64Data = function(doc, callback) { const getBase64Data = function(doc, callback) {
let buffer = new Buffer(0); let buffer = new Buffer(0);
// callback has the form function (err, res) {} // callback has the form function (err, res) {}
const tmpWriteable = fs.createWriteStream( const tmpFile = path.join(
path.join(os.tmpdir(), `tmpexport${process.pid}`), os.tmpdir(),
`tmpexport${process.pid}${Math.radom()}`,
); );
const tmpWriteable = fs.createWriteStream(tmpFile);
const readStream = doc.createReadStream(); const readStream = doc.createReadStream();
readStream.on('data', function(chunk) { readStream.on('data', function(chunk) {
buffer = Buffer.concat([buffer, chunk]); buffer = Buffer.concat([buffer, chunk]);
@ -152,6 +154,9 @@ export class Exporter {
}); });
readStream.on('end', function() { readStream.on('end', function() {
// done // done
fs.unlink(tmpFile, () => {
//ignored
});
callback(null, buffer.toString('base64')); callback(null, buffer.toString('base64'));
}); });
readStream.pipe(tmpWriteable); readStream.pipe(tmpWriteable);