C++

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.

C++

#include <CkRest.h>
#include <CkAuthAws.h>
#include <CkBinData.h>
#include <CkCrypt2.h>
#include <CkStringBuilder.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    CkRest rest;

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

    //  Provide AWS credentials.
    CkAuthAws authAws;
    authAws.put_AccessKey("AWS_ACCESS_KEY");
    authAws.put_SecretKey("AWS_SECRET_KEY");
    authAws.put_ServiceName("glacier");
    authAws.put_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.
    CkBinData bd;
    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

    CkCrypt2 crypt;
    crypt.put_HashAlgorithm("sha256-tree-hash");
    crypt.put_EncodingMode("hexlower");
    const char *treeHashHex = crypt.hashBdENC(bd);
    rest.AddHeader("x-amz-sha256-tree-hash",treeHashHex);

    crypt.put_HashAlgorithm("sha256");
    const char *linearHashHex = crypt.hashBdENC(bd);
    authAws.put_PrecomputedSha256(linearHashHex);

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

    CkStringBuilder sbResponseBody;
    success = rest.FullRequestBd("POST","/AWS_ACCOUNT_ID/vaults/chilkat/archives",bd,sbResponseBody);
    if (success != true) {
        std::cout << rest.lastErrorText() << "\r\n";
        return;
    }

    int respStatusCode = rest.get_ResponseStatusCode();
    if (respStatusCode >= 400) {
        std::cout << "Response Status Code = " << respStatusCode << "\r\n";
        std::cout << "Response Header:" << "\r\n";
        std::cout << rest.responseHeader() << "\r\n";
        std::cout << "Response Body:" << "\r\n";
        std::cout << sbResponseBody.getAsString() << "\r\n";
        return;
    }

    //  Success is indicated by a 201 response status with an empty response body.
    std::cout << "response status code = " << respStatusCode << "\r\n";

    //  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
    //  

    const char *archiveId = rest.responseHdrByName("x-amz-archive-id");
    std::cout << "x-amz-archive-id = " << archiveId << "\r\n";

    const char *location = rest.responseHdrByName("Location");
    std::cout << "Location = " << location << "\r\n";
    }