(Swift 3,4,5...) Azure Storage: Set Blob Service Properties

Azure Storage Blob Service REST API: Sample code to set a blob's service properties.

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func chilkatTest() {
    // Azure Blob Service Example: Set Blob Service Properties
    // See also: https://msdn.microsoft.com/en-us/library/azure/hh452235.aspx

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

    let rest = CkoRest()!

    // Connect to the Azure Storage Blob Service
    var bTls: Bool = true
    var port: Int = 443
    var bAutoReconnect: Bool = true
    // In this example, the storage account name is "chilkat".
    var success: Bool = rest.connect("chilkat.blob.core.windows.net", port: port, tls: bTls, autoReconnect: bAutoReconnect)
    if success != true {
        print("\(rest.lastErrorText!)")
        return
    }

    // Provide Azure Cloud credentials for the REST call.
    let azAuth = CkoAuthAzureStorage()!
    azAuth.accessKey = "AZURE_ACCESS_KEY"
    // The account name used here should match the 1st part of the domain passed in the call to Connect (above).
    azAuth.account = "chilkat"
    azAuth.scheme = "SharedKey"
    azAuth.service = "Blob"
    // This causes the "x-ms-version: 2020-08-04" header to be automatically added.
    azAuth.xMsVersion = "2020-08-04"
    success = rest.setAuthAzureStorage(azAuth)

    // Note: The application does not need to explicitly set the following
    // headers: x-ms-date, Authorization.  These headers
    // are automatically set by Chilkat.

    // This example will set logging properties.  The XML body of the request
    // will look like this:

    // <?xml version="1.0" encoding="utf-8"?>
    // <StorageServiceProperties>
    //     <Logging>
    //         <Version>version-number</Version>
    //         <Delete>true|false</Delete>
    //         <Read>true|false</Read>
    //         <Write>true|false</Write>
    //         <RetentionPolicy>
    //             <Enabled>true|false</Enabled>
    //             <Days>number-of-days</Days>
    //         </RetentionPolicy>
    //     </Logging>

    // Build the request:
    let xml = CkoXml()!
    xml.tag = "StorageServiceProperties"
    var xLogging: CkoXml? = xml.newChild("Logging", content: "")
    xLogging!.newChild2("Version", content: "1.0")
    xLogging!.newChild2("Delete", content: "true")
    xLogging!.newChild2("Read", content: "true")
    xLogging!.newChild2("Write", content: "true")
    var xRetension: CkoXml? = xLogging!.newChild("RetentionPolicy", content: "")
    xRetension!.newChild2("Enabled", content: "true")
    xRetension!.newChild2("Days", content: "7")
    xRetension = nil
    xLogging = nil

    // The expected response is a 202 response status code with no response body.
    var responseStr: String? = rest.fullRequest("PUT", uriPath: "/?restype=service&comp=properties", bodyText: xml.getXml())
    if rest.lastMethodSuccess != true {
        print("\(rest.lastErrorText!)")
        return
    }

    // When successful, the Azure Storage service will respond with a 202 response code,
    // with no response body.
    if rest.responseStatusCode.intValue != 202 {
        // Examine the request/response to see what happened.
        print("response status code = \(rest.responseStatusCode.intValue)")
        print("response status text = \(rest.responseStatusText!)")
        print("response header: \(rest.responseHeader!)")
        print("response body (if any): \(responseStr!)")
        print("---")
        print("LastRequestStartLine: \(rest.lastRequestStartLine!)")
        print("LastRequestHeader: \(rest.lastRequestHeader!)")
        return
    }

    print("Success: Blob service properties updated!")

}