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#region Copyright notice and license
// Copyright 2015 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#endregion
namespace Grpc.Core.Internal
{
/// <summary>
/// grpc_server from grpc/grpc.h
/// </summary>
internal sealed class ServerSafeHandle : SafeHandleZeroIsInvalid
{
static readonly NativeMethods Native = NativeMethods.Get();
private ServerSafeHandle()
{
}
public static ServerSafeHandle NewServer(ChannelArgsSafeHandle args)
{
// Increment reference count for the native gRPC environment to make sure we don't do grpc_shutdown() before destroying the server handle.
// Doing so would make object finalizer crash if we end up abandoning the handle.
GrpcEnvironment.GrpcNativeInit();
return Native.grpcsharp_server_create(args);
}
public void RegisterCompletionQueue(CompletionQueueSafeHandle cq)
{
using (cq.NewScope())
{
Native.grpcsharp_server_register_completion_queue(this, cq);
}
}
public int AddInsecurePort(string addr)
{
return Native.grpcsharp_server_add_insecure_http2_port(this, addr);
}
public int AddSecurePort(string addr, ServerCredentialsSafeHandle credentials)
{
return Native.grpcsharp_server_add_secure_http2_port(this, addr, credentials);
}
public void Start()
{
Native.grpcsharp_server_start(this);
}
public void ShutdownAndNotify(BatchCompletionDelegate callback, CompletionQueueSafeHandle completionQueue)
{
using (completionQueue.NewScope())
{
// TODO(jtattermusch): delegate allocation by caller can be avoided by utilizing the "state" object,
// but server shutdown isn't worth optimizing right now.
var ctx = completionQueue.CompletionRegistry.RegisterBatchCompletion(callback, null);
Native.grpcsharp_server_shutdown_and_notify_callback(this, completionQueue, ctx);
}
}
public void RequestCall(RequestCallCompletionDelegate callback, CompletionQueueSafeHandle completionQueue)
{
using (completionQueue.NewScope())
{
var ctx = completionQueue.CompletionRegistry.RegisterRequestCallCompletion(callback);
Native.grpcsharp_server_request_call(this, completionQueue, ctx).CheckOk();
}
}
protected override bool ReleaseHandle()
{
Native.grpcsharp_server_destroy(handle);
GrpcEnvironment.GrpcNativeShutdown();
return true;
}
// Only to be called after ShutdownAndNotify.
public void CancelAllCalls()
{
Native.grpcsharp_server_cancel_all_calls(this);
}
}
}
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