// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
using System;
using System.Collections.Generic;
using System.IO.Pipes;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace Microsoft.CodeAnalysis.CompilerServer
{
    internal interface IDiagnosticListener
    {
        /// <summary>
        /// Called when the server updates the keep alive value.
        /// </summary>
        void UpdateKeepAlive(TimeSpan keepAlive);
 
        /// <summary>
        /// Called when a connection to the server occurs.
        /// </summary>
        void ConnectionReceived();
 
        /// <summary>
        /// Called when a connection has finished processing.
        /// </summary>
        void ConnectionCompleted(CompletionData completionData);
 
        /// <summary>
        /// Called when the server is shutting down because the keep alive timeout was reached.
        /// </summary>
        void KeepAliveReached();
    }
 
    internal sealed class EmptyDiagnosticListener : IDiagnosticListener
    {
        public void UpdateKeepAlive(TimeSpan keepAlive)
        {
        }
 
        public void ConnectionReceived()
        {
        }
 
        public void ConnectionCompleted(CompletionData completionData)
        {
        }
 
        public void KeepAliveReached()
        {
        }
    }
}