Swift

Glacier Download Archive

See more Amazon Glacier Examples

Demonstrates how to download an Amazon Glacier archive. Downloading a Glacier archive is a two step process. First an archive retrieval job is initiated. After it completes, the job output is downloaded (i.e. the archive contents are downloaded.)

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

Swift

func chilkatTest() {
    var success: Bool = false

    // 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
    success = rest.connect(hostname: "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(authProvider: 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.
    // --------------------------------------------------------------------------

    // 
    // For more information, see Glacier Retrieve Job Output Reference Documentation
    // 
    rest.addHeader(name: "x-amz-glacier-version", value: "2012-06-01")

    // To download an archive, we'll make several method calls:
    // 1) Send the HTTPS GET request.
    // 2) Get the response body.
    // 3) If the response status code indicates success, stream the response body (i.e the archive data) to a file.
    // 4) If the response status code indicates an error, get the JSON error response.

    // Send the GET request.
    success = rest.sendReqNoBody(httpVerb: "GET", uriPath: "/AWS_ACCOUNT_ID/vaults/chilkat/jobs/JOB_ID/output")
    if success != true {
        print("\(rest.lastErrorText!)")
        return
    }

    // Read the response header.
    var responseStatusCode: Int = rest.readResponseHeader().intValue
    if responseStatusCode < 0 {
        print("\(rest.lastErrorText!)")
        return
    }

    print("Response status code = \(responseStatusCode)")

    // We expect a 200 response status if the archive data is coming.
    // Otherwise, we'll get a JSON response body with an error message(or no response body).
    if responseStatusCode == 200 {

        let bodyStream = CkoStream()!

        // The stream's sink will be a file.
        bodyStream.sinkFile = "qa_output/archiveData.dat"

        // Read the response body to the stream.
        success = rest.readRespBodyStream(stream: bodyStream, autoSetStreamCharset: true)
        if success != true {
            print("\(rest.lastErrorText!)")
            return
        }

        print("Successfully received the archive file.")

    }
    else {
        var jsonError: String? = rest.readRespBodyString()
        if rest.lastMethodSuccess != true {
            print("\(rest.lastErrorText!)")
        }
        else {
            print("\(jsonError!)")
        }

    }


}