The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
202 lines
6.1 KiB
202 lines
6.1 KiB
#region Copyright notice and license |
|
|
|
// Copyright 2015, Google Inc. |
|
// All rights reserved. |
|
// |
|
// Redistribution and use in source and binary forms, with or without |
|
// modification, are permitted provided that the following conditions are |
|
// met: |
|
// |
|
// * Redistributions of source code must retain the above copyright |
|
// notice, this list of conditions and the following disclaimer. |
|
// * Redistributions in binary form must reproduce the above |
|
// copyright notice, this list of conditions and the following disclaimer |
|
// in the documentation and/or other materials provided with the |
|
// distribution. |
|
// * Neither the name of Google Inc. nor the names of its |
|
// contributors may be used to endorse or promote products derived from |
|
// this software without specific prior written permission. |
|
// |
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
|
#endregion |
|
|
|
using System; |
|
using System.Runtime.InteropServices; |
|
using System.Threading.Tasks; |
|
using Grpc.Core.Internal; |
|
using Grpc.Core.Logging; |
|
using Grpc.Core.Utils; |
|
|
|
namespace Grpc.Core |
|
{ |
|
/// <summary> |
|
/// Encapsulates initialization and shutdown of gRPC library. |
|
/// </summary> |
|
public class GrpcEnvironment |
|
{ |
|
const int THREAD_POOL_SIZE = 4; |
|
|
|
[DllImport("grpc_csharp_ext.dll")] |
|
static extern void grpcsharp_init(); |
|
|
|
[DllImport("grpc_csharp_ext.dll")] |
|
static extern void grpcsharp_shutdown(); |
|
|
|
static object staticLock = new object(); |
|
static GrpcEnvironment instance; |
|
|
|
static ILogger logger = new ConsoleLogger(); |
|
|
|
readonly GrpcThreadPool threadPool; |
|
readonly CompletionRegistry completionRegistry; |
|
readonly DebugStats debugStats = new DebugStats(); |
|
bool isClosed; |
|
|
|
/// <summary> |
|
/// Returns an instance of initialized gRPC environment. |
|
/// Subsequent invocations return the same instance unless Shutdown has been called first. |
|
/// </summary> |
|
internal static GrpcEnvironment GetInstance() |
|
{ |
|
lock (staticLock) |
|
{ |
|
if (instance == null) |
|
{ |
|
instance = new GrpcEnvironment(); |
|
} |
|
return instance; |
|
} |
|
} |
|
|
|
/// <summary> |
|
/// Shuts down the gRPC environment if it was initialized before. |
|
/// Blocks until the environment has been fully shutdown. |
|
/// </summary> |
|
public static void Shutdown() |
|
{ |
|
lock (staticLock) |
|
{ |
|
if (instance != null) |
|
{ |
|
instance.Close(); |
|
instance = null; |
|
} |
|
} |
|
} |
|
|
|
/// <summary> |
|
/// Gets application-wide logger used by gRPC. |
|
/// </summary> |
|
/// <value>The logger.</value> |
|
public static ILogger Logger |
|
{ |
|
get |
|
{ |
|
return logger; |
|
} |
|
} |
|
|
|
/// <summary> |
|
/// Sets the application-wide logger that should be used by gRPC. |
|
/// </summary> |
|
public static void SetLogger(ILogger customLogger) |
|
{ |
|
Preconditions.CheckNotNull(customLogger); |
|
logger = customLogger; |
|
} |
|
|
|
/// <summary> |
|
/// Creates gRPC environment. |
|
/// </summary> |
|
private GrpcEnvironment() |
|
{ |
|
NativeLogRedirector.Redirect(); |
|
grpcsharp_init(); |
|
completionRegistry = new CompletionRegistry(this); |
|
threadPool = new GrpcThreadPool(this, THREAD_POOL_SIZE); |
|
threadPool.Start(); |
|
// TODO: use proper logging here |
|
Logger.Info("gRPC initialized."); |
|
} |
|
|
|
/// <summary> |
|
/// Gets the completion registry used by this gRPC environment. |
|
/// </summary> |
|
internal CompletionRegistry CompletionRegistry |
|
{ |
|
get |
|
{ |
|
return this.completionRegistry; |
|
} |
|
} |
|
|
|
/// <summary> |
|
/// Gets the completion queue used by this gRPC environment. |
|
/// </summary> |
|
internal CompletionQueueSafeHandle CompletionQueue |
|
{ |
|
get |
|
{ |
|
return this.threadPool.CompletionQueue; |
|
} |
|
} |
|
|
|
/// <summary> |
|
/// Gets the completion queue used by this gRPC environment. |
|
/// </summary> |
|
internal DebugStats DebugStats |
|
{ |
|
get |
|
{ |
|
return this.debugStats; |
|
} |
|
} |
|
|
|
/// <summary> |
|
/// Shuts down this environment. |
|
/// </summary> |
|
private void Close() |
|
{ |
|
if (isClosed) |
|
{ |
|
throw new InvalidOperationException("Close has already been called"); |
|
} |
|
threadPool.Stop(); |
|
grpcsharp_shutdown(); |
|
isClosed = true; |
|
|
|
debugStats.CheckOK(); |
|
|
|
Logger.Info("gRPC shutdown."); |
|
} |
|
|
|
/// <summary> |
|
/// Shuts down this environment asynchronously. |
|
/// </summary> |
|
private Task CloseAsync() |
|
{ |
|
return Task.Run(() => |
|
{ |
|
try |
|
{ |
|
Close(); |
|
} |
|
catch (Exception e) |
|
{ |
|
Logger.Error(e, "Error occured while shutting down GrpcEnvironment."); |
|
} |
|
}); |
|
} |
|
} |
|
}
|
|
|