(Swift 3,4,5...) Amazon Glacier List Vaults

Demonstrates how to list the glacier vaults in a given region.

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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.
    // --------------------------------------------------------------------------

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

    // Get the glacier vaults in my account's us-west-2 region.
    let sbResponseBody = CkoStringBuilder()!
    success = rest.fullRequestNoBodySb("GET", uriPath: "/AWS_ACCOUNT_ID/vaults", sb: 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 200 response status with an empty response body.
    print("response status code = \(respStatusCode)")

    let json = CkoJsonObject()!
    json.loadSb(sbResponseBody)
    json.emitCompact = false

    print("\(json.emit()!)")

    // Use this online tool to generate parsing code from sample JSON: 
    // Generate Parsing Code from JSON

    var Marker: String?
    var i: Int
    var count_i: Int
    var CreationDate: String?
    var LastInventoryDate: String?
    var NumberOfArchives: Int
    var SizeInBytes: Int
    var VaultARN: String?
    var VaultName: String?

    Marker = json.string(of: "Marker")
    i = 0
    count_i = json.size(ofArray: "VaultList").intValue
    while i < count_i {
        json.i = i
        CreationDate = json.string(of: "VaultList[i].CreationDate")
        LastInventoryDate = json.string(of: "VaultList[i].LastInventoryDate")
        NumberOfArchives = json.int(of: "VaultList[i].NumberOfArchives").intValue
        SizeInBytes = json.int(of: "VaultList[i].SizeInBytes").intValue
        VaultARN = json.string(of: "VaultList[i].VaultARN")
        VaultName = json.string(of: "VaultList[i].VaultName")
        i = i + 1
    }

    // Sample response
    // 
    // {
    //   "Marker": null,
    //   "VaultList": [
    //     {
    //       "CreationDate": "2019-04-05T19:10:28.428Z",
    //       "LastInventoryDate": null,
    //       "NumberOfArchives": 0,
    //       "SizeInBytes": 0,
    //       "VaultARN": "arn:aws:glacier:us-west-2:954491834127:vaults/chilkat",
    //       "VaultName": "chilkat"
    //     },
    //     {
    //       "CreationDate": "2019-04-05T19:00:21.768Z",
    //       "LastInventoryDate": null,
    //       "NumberOfArchives": 0,
    //       "SizeInBytes": 0,
    //       "VaultARN": "arn:aws:glacier:us-west-2:954491834127:vaults/ocean",
    //       "VaultName": "ocean"
    //     }
    //   ]
    // }
    // 

}