(Swift 2) Amazon Glacier Set Vault Access Policy

Demonstrates how to set an access policy for a vault (will overwrite the existing policy).

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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 Set Vault Access Policy Reference Documentation
    // 
    rest.AddHeader("x-amz-glacier-version", value: "2012-06-01")

    // Create the following JSON
    // Use this online tool to generate the code from sample JSON: 
    // Generate Code to Create JSON

    // {
    //   "Version": "2012-10-17",
    //   "Statement": [
    //     {
    //       "Sid": "Define-owner-access-rights",
    //       "Effect": "Allow",
    //       "Principal": {
    //         "AWS": "arn:aws:iam::AWS_ACCOUNT_ID:root"
    //       },
    //       "Action": "glacier:DeleteArchive",
    //       "Resource": "arn:aws:glacier:us-west-2:AWS_ACCOUNT_ID:vaults/chilkat"
    //     }
    //   ]
    // }

    let jsonPolicy = CkoJsonObject()
    jsonPolicy.UpdateString("Version", value: "2012-10-17")
    jsonPolicy.UpdateString("Statement[0].Sid", value: "Define-owner-access-rights")
    jsonPolicy.UpdateString("Statement[0].Effect", value: "Allow")
    jsonPolicy.UpdateString("Statement[0].Principal.AWS", value: "arn:aws:iam::AWS_ACCOUNT_ID:root")
    jsonPolicy.UpdateString("Statement[0].Action", value: "glacier:DeleteArchive")
    // Notice here the name of the vault: "chilkat".  Change it to your vault name.  Also use your actual AWS account ID.
    jsonPolicy.UpdateString("Statement[0].Resource", value: "arn:aws:glacier:us-west-2:AWS_ACCOUNT_ID:vaults/chilkat")

    // Wrap the above JSON in this JSON:

    // {
    //    "Policy": "{  ... the above JSON ... }"
    // }
    let json = CkoJsonObject()
    json.UpdateString("Policy", value: jsonPolicy.Emit())

    let sbRequestBody = CkoStringBuilder()
    json.EmitSb(sbRequestBody)

    let sbResponseBody = CkoStringBuilder()
    success = rest.FullRequestSb("PUT", uriPath: "/AWS_ACCOUNT_ID/vaults/chilkat/access-policy", requestBody: sbRequestBody, 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 204 response status with an empty response body.
    print("response status code = \(respStatusCode)")

}