Await in Oxygene

Elements Oxygene
1

I have written a Hydra-module in Oxygene which uses an external API. The authorization routine of the API has been changed, and i can’t get the new routine to work.
This is an example of C# code that are given as an example from the makers of the API:

// Main method for C# 7.1 and above
public static async Task Main(string[] args)
{
await RunDemo();
}

    /// <summary>
    ///     The purpose of this demo is to show how projects can be created and queried.
    /// </summary>
    private static async Task RunDemo()
    {
        try
        {
            // Set up authorization settings
            var authorizationSettings = new AuthorizationSettings
            {
                ApplicationKey = "<You Application Key Here>",
                ClientKey = "<PowerOffice Go Client Key Here>",
                TokenStore = new BasicTokenStore(@"my.tokenstore"),
                EndPointHost = Settings.EndPointMode.Production 
            };

            // Initialize the PowerOffice Go API and request authorization
            var api = await Go.CreateAsync(authorizationSettings);

My last line in Oxygene is:
var api := await Go.CreateAsync(authorizationSettings);

This is where my program stops. It looks like it awaiting forever.

My questions are:
Does await have the same meaning in Oxygene as in C#?

Do i have to declare the procedure where this line is in a special way?
The C# procedure is declared as: public static async Task

I’m using Water to compile the module. Would it be different with Visual Studio?

Best regards
Geir Harald Humstad

2

It should work with public static Task, the async isnt needed

1 Like
3

I took one of the example programs provided and translated into Oxygene with Oxydizer.
Here is the C# program that works:

using System;
using System.Threading.Tasks;
using GoApi;
using GoApi.Core;
using GoApi.Core.Global;

namespace AuthorizationDemo
{
internal class Program
{

    // Main method for C# 7.1 and above
    public static async Task Main(string[] args)
    {
        await RunDemo();
    }

    //// Main method for C# 7.0 and below. Be careful with Wait, you can get deadlocks. It is highly recommended to update to C# 7.1 for console applications.
    //// To change the C# version, open the project properties, go to Build, then click the Advanced button in the bottom right, and select your C# version.
    //// If you can't find an appropriate C# version you may need to update your Visual Studio.
    //public static void Main(string[] args)
    //{
    //    RunDemo().Wait();
    //}

    /// <summary>
    ///     The purpose of this demo is to test if the PowerOffice Go Authentication server will allow us
    ///     to be authorized to access the PowerOffice GO API.
    /// </summary>
    private static async Task RunDemo()
    {
        try
        {
            // Create authorization settings for the test client
            Console.WriteLine("Setting up authorization settings..");
            // Set up authorization settings
            var authorizationSettings = new AuthorizationSettings
            {
                ApplicationKey = "",
                ClientKey = "",
                TokenStore = new BasicTokenStore(@"my.tokenstore"),
                EndPointHost = Settings.EndPointMode.Production 
            };

            // Request authorization from the PowerOffice GO authentication server
            Console.WriteLine("Requesting authorization..");
            var api = await Go.CreateAsync(authorizationSettings);

            // If no exceptions is thrown by now, we have sucessfully been authorized to access the PowerOffice GO API
            Console.WriteLine("Authorization granted!");
        }
        catch (ApiException e)
        {
            Console.WriteLine("Error: " + e.Message);
        }

        // Wait for user input
        Console.WriteLine("\n\nPress any key...");
        Console.ReadKey();        
    }
}

}

Here is the Oxygene program that don’t work:

namespace ConsoleApplication1;

interface

uses
System,
System.Threading.Tasks,
GoApi,
GoApi.Core,
GoApi.Core.Global;

type
Program = assembly class
private
class method RunDemo: Task;
public
// Main method for C# 7.1 and above
class method Main(args: array of String): Task;
end;

implementation

class method Program.Main(args: array of String): Task;
begin
await RunDemo();
//RunDemo.Wait;
end;

class method Program.RunDemo: Task;
begin
try
// Create authorization settings for the test client
Console.WriteLine(‘Setting up authorization settings…’);
// Set up authorization settings
var authorizationSettings := new AuthorizationSettings(
ApplicationKey := ’ ',
ClientKey := ’ ',
TokenStore := new BasicTokenStore(‘my.tokenstore’),
EndPointHost := Settings.EndPointMode.Production);

//  Request authorization from the PowerOffice GO authentication server
Console.WriteLine('Requesting authorization..');
var api := await Go.CreateAsync(authorizationSettings);
//  If no exceptions is thrown by now, we have sucessfully been authorized to access the PowerOffice GO API
Console.WriteLine('Authorization granted!');

except
on e: ApiException do begin
Console.WriteLine(‘Error: ’ + e.Message);
end;
end;
// Wait for user input
Console.WriteLine(#10#10’Press any key…’);
Console.ReadKey();
end;
end.

Is there someone who can spot the error in the Oxygene-code?
And is Oxygene at the level of C# 7.1 or is it below?

Best regards
Geir Harald Humstad

4

It looks ok, whats the output ?

5

The output is nothing. Even the first console.writeline is not shown.

6

can you zip up the project and attach it to a message ?