Create a multipart upload to an Amazon S3 Glacier vault using an Amazon SDK - Amazon S3 Glacier
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Create a multipart upload to an Amazon S3 Glacier vault using an Amazon SDK

The following code example shows how to create a multipart upload to an Amazon S3 Glacier vault.

SDK for JavaScript (v2)

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

Create a multipart upload of 1 megabyte chunks of a Buffer object.

// Create a new service object and some supporting variables var glacier = new AWS.Glacier({apiVersion: '2012-06-01'}), vaultName = 'YOUR_VAULT_NAME', buffer = new Buffer(2.5 * 1024 * 1024), // 2.5MB buffer partSize = 1024 * 1024, // 1MB chunks, numPartsLeft = Math.ceil(buffer.length / partSize), startTime = new Date(), params = {vaultName: vaultName, partSize: partSize.toString()}; // Compute the complete SHA-256 tree hash so we can pass it // to completeMultipartUpload request at the end var treeHash = glacier.computeChecksums(buffer).treeHash; // Initiate the multipart upload console.log('Initiating upload to', vaultName); // Call Glacier to initiate the upload. glacier.initiateMultipartUpload(params, function (mpErr, multipart) { if (mpErr) { console.log('Error!', mpErr.stack); return; } console.log("Got upload ID", multipart.uploadId); // Grab each partSize chunk and upload it as a part for (var i = 0; i < buffer.length; i += partSize) { var end = Math.min(i + partSize, buffer.length), partParams = { vaultName: vaultName, uploadId: multipart.uploadId, range: 'bytes ' + i + '-' + (end-1) + '/*', body: buffer.slice(i, end) }; // Send a single part console.log('Uploading part', i, '=', partParams.range); glacier.uploadMultipartPart(partParams, function(multiErr, mData) { if (multiErr) return; console.log("Completed part", this.request.params.range); if (--numPartsLeft > 0) return; // complete only when all parts uploaded var doneParams = { vaultName: vaultName, uploadId: multipart.uploadId, archiveSize: buffer.length.toString(), checksum: treeHash // the computed tree hash }; console.log("Completing upload..."); glacier.completeMultipartUpload(doneParams, function(err, data) { if (err) { console.log("An error occurred while uploading the archive"); console.log(err); } else { var delta = (new Date() - startTime) / 1000; console.log('Completed upload in', delta, 'seconds'); console.log('Archive ID:', data.archiveId); console.log('Checksum: ', data.checksum); } }); }); } });

For a complete list of Amazon SDK developer guides and code examples, see Using S3 Glacier with an Amazon SDK. This topic also includes information about getting started and details about previous SDK versions.