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Swift 3/4 Examples

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(Swift 3/4) 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.

Chilkat Downloads for the Swift Programming Language

MAC OS X (Cocoa) Objective-C/Swift Libs

iOS Objective-C/Swift Libs

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

    let rest = CkoRest()!

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

    // Provide AWS credentials.
    let authAws = CkoAuthAws()!
    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.
    let bd = CkoBinData()!
    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", value: "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

    let crypt = CkoCrypt2()!
    crypt.hashAlgorithm = "sha256-tree-hash"
    crypt.encodingMode = "hexlower"
    var treeHashHex: String? = crypt.hashBdENC(bd)
    rest.addHeader("x-amz-sha256-tree-hash", value: treeHashHex)

    crypt.hashAlgorithm = "sha256"
    var linearHashHex: String? = crypt.hashBdENC(bd)
    authAws.precomputedSha256 = linearHashHex

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

    let sbResponseBody = CkoStringBuilder()!
    success = rest.fullRequestBd("POST", uriPath: "/AWS_ACCOUNT_ID/vaults/chilkat/archives", binData: bd, responseBody: sbResponseBody)
    if success != true {
        print("\(rest.lastErrorText!)")
        return
    }

    var respStatusCode: Int = rest.responseStatusCode.intValue
    if respStatusCode >= 400 {
        print("Response Status Code = \(respStatusCode)")
        print("Response Header:")
        print("\(rest.responseHeader!)")
        print("Response Body:")
        print("\(sbResponseBody.getAsString()!)")
        return
    }

    // Success is indicated by a 201 response status with an empty response body.
    print("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: String? = rest.responseHdr(byName: "x-amz-archive-id")
    print("x-amz-archive-id = \(archiveId!!)")

    var location: String? = rest.responseHdr(byName: "Location")
    print("Location = \(location!!)")

}

 

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