| #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 |
| using System; |
| using System.Runtime.InteropServices; |
| using System.Threading; |
| using System.Threading.Tasks; |
| using Grpc.Core.Profiling; |
| |
| namespace Grpc.Core.Internal |
| { |
| /// <summary> |
| /// grpc_channel from <c>grpc/grpc.h</c> |
| /// </summary> |
| internal class ChannelSafeHandle : SafeHandleZeroIsInvalid |
| { |
| static readonly NativeMethods Native = NativeMethods.Get(); |
| |
| private ChannelSafeHandle() |
| { |
| } |
| |
| public static ChannelSafeHandle CreateInsecure(string target, ChannelArgsSafeHandle channelArgs) |
| { |
| // 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_insecure_channel_create(target, channelArgs); |
| } |
| |
| public static ChannelSafeHandle CreateSecure(ChannelCredentialsSafeHandle credentials, string target, ChannelArgsSafeHandle channelArgs) |
| { |
| // 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_secure_channel_create(credentials, target, channelArgs); |
| } |
| |
| public CallSafeHandle CreateCall(CallSafeHandle parentCall, ContextPropagationFlags propagationMask, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline, CallCredentialsSafeHandle credentials) |
| { |
| var result = Native.grpcsharp_channel_create_call(this, parentCall, propagationMask, cq, method, host, deadline); |
| if (credentials != null) |
| { |
| result.SetCredentials(credentials); |
| } |
| result.Initialize(cq); |
| return result; |
| } |
| |
| public ChannelState CheckConnectivityState(bool tryToConnect) |
| { |
| return Native.grpcsharp_channel_check_connectivity_state(this, tryToConnect ? 1 : 0); |
| } |
| |
| public void WatchConnectivityState(ChannelState lastObservedState, Timespec deadline, CompletionQueueSafeHandle cq, BatchCompletionDelegate callback) |
| { |
| var ctx = BatchContextSafeHandle.Create(); |
| cq.CompletionRegistry.RegisterBatchCompletion(ctx, callback); |
| Native.grpcsharp_channel_watch_connectivity_state(this, lastObservedState, deadline, cq, ctx); |
| } |
| |
| public string GetTarget() |
| { |
| using (var cstring = Native.grpcsharp_channel_get_target(this)) |
| { |
| return cstring.GetValue(); |
| } |
| } |
| |
| protected override bool ReleaseHandle() |
| { |
| Native.grpcsharp_channel_destroy(handle); |
| GrpcEnvironment.GrpcNativeShutdown(); |
| return true; |
| } |
| } |
| } |