///////////////////////////////////////////////////////////////////////////////
//
//  Microsoft Research Singularity
//
//  Copyright (c) Microsoft Corporation.  All rights reserved.
//
//  File: Applications\ServiceManager\Benchmark\Job.sg
//
//  Note:
//
using System;
using Microsoft.Singularity;
using Microsoft.Singularity.Channels;
using Microsoft.Singularity.Directory;
using Microsoft.Singularity.Services;

namespace Microsoft.Singularity.Applications.ServiceManager
{
    internal abstract class Job
    {
        internal readonly BenchmarkServerInfo! info;

        internal Job(BenchmarkServerInfo! info)
        {
            this.info = info;
        }

        internal abstract bool Run();

        protected bool Bind(out BenchmarkContract.Imp:Ready! ep)
        {
            bool        success = false;
            ErrorCode   error;

            BenchmarkContract.Imp!          imp;
            BenchmarkContract.Exp!          exp;
            DirectoryServiceContract.Imp    ds;

            BenchmarkContract.NewChannel(out imp, out exp);
            ds = DirectoryService.NewClientEndpoint();
            if (!SdsUtils.Bind(info.ServiceName, ds, exp, out error))
            {
                Console.WriteLine("Binding failed: {0}\n",
                                  SdsUtils.ErrorCodeToString(error));
                success = false;
                goto exit;
            }

            switch receive
            {
                case imp.Success():
                    success = true;
                    break;
                case imp.ChannelClosed():
                    Console.WriteLine("Job: Channel closed.\n");
                    success = false;
                    break;
            }
exit:
            delete ds;
            ep = imp;

            return success;
        }
    } // class
}