exports.handler = function()

in 4-zip/zipFiles/app.js [23:68]

• 25 lines of code
• 2 McCabe index (conditional complexity)

exports.handler = function (eventObject, context) {
	// create a file to stream archive data to.
	const output = fs.createWriteStream(`${efsPath}/${outputFile}`)
	const archive = archiver('zip', {
		zlib: { level: 9 } // Sets the compression level.
	})
	
	// listen for all archive data to be written
	// 'close' event is fired only when a file descriptor is involved
	output.on('close', function() {
		console.log(archive.pointer() + ' total bytes')
		console.log('archiver has been finalized and the output file descriptor has closed.')
	})
	
	// This event is fired when the data source is drained no matter what was the data source.
	// It is not part of this library but rather from the NodeJS Stream API.
	// @see: https://nodejs.org/api/stream.html#stream_event_end
	output.on('end', function() {
		console.log('Data has been drained');
	})
	
	// good practice to catch warnings (ie stat failures and other non-blocking errors)
	archive.on('warning', function(err) {
		if (err.code === 'ENOENT') {
			// log warning
		} else {
			// throw error
			throw err
		}
	})
	
	// good practice to catch this error explicitly
	archive.on('error', function(err) {
		throw err
	})

		// pipe archive data to the file
	archive.pipe(output);
	
	// append files from a glob pattern
	archive.glob(`${efsPath}/*.jpg`)
	
	// finalize the archive (ie we are done appending files but streams have to finish yet)
	// 'close', 'end' or 'finish' may be fired right after calling this method so register to them beforehand
	archive.finalize()
}