Go

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.

Go

    success := false

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

    rest := chilkat.NewRest()

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

    // Provide AWS credentials.
    authAws := chilkat.NewAuthAws()
    authAws.SetAccessKey("AWS_ACCESS_KEY")
    authAws.SetSecretKey("AWS_SECRET_KEY")
    authAws.SetServiceName("glacier")
    authAws.SetRegion("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.
    bd := chilkat.NewBinData()
    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

    crypt := chilkat.NewCrypt2()
    crypt.SetHashAlgorithm("sha256-tree-hash")
    crypt.SetEncodingMode("hexlower")
    treeHashHex := crypt.HashBdENC(bd)
    rest.AddHeader("x-amz-sha256-tree-hash",*treeHashHex)

    crypt.SetHashAlgorithm("sha256")
    linearHashHex := crypt.HashBdENC(bd)
    authAws.SetPrecomputedSha256(*linearHashHex)

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

    sbResponseBody := chilkat.NewStringBuilder()
    success = rest.FullRequestBd("POST","/AWS_ACCOUNT_ID/vaults/chilkat/archives",bd,sbResponseBody)
    if success != true {
        fmt.Println(rest.LastErrorText())
        rest.DisposeRest()
        authAws.DisposeAuthAws()
        bd.DisposeBinData()
        crypt.DisposeCrypt2()
        sbResponseBody.DisposeStringBuilder()
        return
    }

    respStatusCode := rest.ResponseStatusCode()
    if respStatusCode >= 400 {
        fmt.Println("Response Status Code = ", respStatusCode)
        fmt.Println("Response Header:")
        fmt.Println(rest.ResponseHeader())
        fmt.Println("Response Body:")
        fmt.Println(*sbResponseBody.GetAsString())
        rest.DisposeRest()
        authAws.DisposeAuthAws()
        bd.DisposeBinData()
        crypt.DisposeCrypt2()
        sbResponseBody.DisposeStringBuilder()
        return
    }

    // Success is indicated by a 201 response status with an empty response body.
    fmt.Println("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
    // 

    archiveId := rest.ResponseHdrByName("x-amz-archive-id")
    fmt.Println("x-amz-archive-id = ", *archiveId)

    location := rest.ResponseHdrByName("Location")
    fmt.Println("Location = ", *location)

    rest.DisposeRest()
    authAws.DisposeAuthAws()
    bd.DisposeBinData()
    crypt.DisposeCrypt2()
    sbResponseBody.DisposeStringBuilder()