(JavaScript) Amazon Glacier Upload Archive from In-Memory Data

Demonstrates how to add an archive to a vault from data in memory.

Note: This example requires Chilkat v9.5.0.78 or greater.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

var rest = new CkRest();

// Connect to the Amazon AWS REST server in the desired region.
var bTls = true;
var port = 443;
var bAutoReconnect = true;
success = rest.Connect("glacier.us-west-2.amazonaws.com",port,bTls,bAutoReconnect);

// Provide AWS credentials.
var authAws = new CkAuthAws();
authAws.AccessKey = "AWS_ACCESS_KEY";
authAws.SecretKey = "AWS_SECRET_KEY";
authAws.ServiceName = "glacier";
authAws.Region = "us-west-2";

success = rest.SetAuthAws(authAws);

// --------------------------------------------------------------------------
// Note: The above REST connection and setup of the AWS credentials
// can be done once.  After connecting, any number of REST calls can be made.
// The "auto reconnect" property passed to rest.Connect indicates that if
// the connection is lost, a REST method call will automatically reconnect
// if needed.
// --------------------------------------------------------------------------

// Load the data to be uploaded.
var bd = new CkBinData();
success = bd.LoadFile("qa_data/jpg/penguins.jpg");
// (The point here is that the contents of the bd don't necessarily have to come from a file.)

// 
// For more information, see Glacier Upload Archive Reference Documentation
// 
rest.AddHeader("x-amz-glacier-version","2012-06-01");

// We'll need to pre-compute the SHA256 tree hash and the SHA256 linear hash.
// The hashes are added in the following request headers:

// x-amz-sha256-tree-hash: SHA256 tree hash
// x-amz-content-sha256: SHA256 linear hash

var crypt = new CkCrypt2();
crypt.HashAlgorithm = "sha256-tree-hash";
crypt.EncodingMode = "hexlower";
var treeHashHex = crypt.HashBdENC(bd);
rest.AddHeader("x-amz-sha256-tree-hash",treeHashHex);

crypt.HashAlgorithm = "sha256";
var linearHashHex = crypt.HashBdENC(bd);
authAws.PrecomputedSha256 = linearHashHex;

// We can optionally add a description
rest.AddHeader("x-amz-archive-description","Penguins JPG");

var sbResponseBody = new CkStringBuilder();
success = rest.FullRequestBd("POST","/AWS_ACCOUNT_ID/vaults/chilkat/archives",bd,sbResponseBody);
if (success !== true) {
    console.log(rest.LastErrorText);
    return;
}

var respStatusCode = rest.ResponseStatusCode;
if (respStatusCode >= 400) {
    console.log("Response Status Code = " + respStatusCode);
    console.log("Response Header:");
    console.log(rest.ResponseHeader);
    console.log("Response Body:");
    console.log(sbResponseBody.GetAsString());
    return;
}

// Success is indicated by a 201 response status with an empty response body.
console.log("response status code = " + respStatusCode);

// If successful, the response header looks like this.
// The Location and x-amz-archive-id are two items of information we may wish to save..

// HTTP/1.1 201 Created
// x-amzn-RequestId: AAABZpJrTyioDC_HsOmHae8EZp_uBSJr6cnGOLKp_XJCl-Q
// Date: Wed, 10 Feb 2017 12:00:00 GMT
// x-amz-sha256-tree-hash: beb0fe31a1c7ca8c6c04d574ea906e3f97b31fdca7571defb5b44dca89b5af60
// Location: /111122223333/vaults/examplevault/archives/NkbByEejwEggmBz2fTH ... GlqrEXAMPLEArchiveId
// x-amz-archive-id: NkbByEejwEggmBz2fTHgJrg0XBoDfjP4q6iu87-TjhqG6eGoOY9Z8i1_AUyUsu ... BfGlqrEXAMPLEArchiveId
// 

var archiveId = rest.ResponseHdrByName("x-amz-archive-id");
console.log("x-amz-archive-id = " + archiveId);

var location = rest.ResponseHdrByName("Location");
console.log("Location = " + location);