Node.js

Amazon Glacier Upload Archive from In-Memory Data

See more Amazon Glacier Examples

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

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

Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    var rest = new chilkat.Rest();

    // 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 chilkat.AuthAws();
    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 chilkat.BinData();
    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 chilkat.Crypt2();
    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 chilkat.StringBuilder();
    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);

}

chilkatExample();