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#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.Diagnostics;
using System.Runtime.InteropServices;
using Grpc.Core;
using Grpc.Core.Utils;
using Grpc.Core.Profiling;
namespace Grpc.Core.Internal
{
/// <summary>
/// grpc_call from <c>grpc/grpc.h</c>
/// </summary>
internal class CallSafeHandle : SafeHandleZeroIsInvalid, INativeCall
{
public static readonly CallSafeHandle NullInstance = new CallSafeHandle();
static readonly NativeMethods Native = NativeMethods.Get();
const uint GRPC_WRITE_BUFFER_HINT = 1;
CompletionQueueSafeHandle completionQueue;
private CallSafeHandle()
{
}
public void Initialize(CompletionQueueSafeHandle completionQueue)
{
this.completionQueue = completionQueue;
}
public void SetCredentials(CallCredentialsSafeHandle credentials)
{
Native.grpcsharp_call_set_credentials(this, credentials).CheckOk();
}
public void StartUnary(UnaryResponseClientHandler callback, byte[] payload, MetadataArraySafeHandle metadataArray, WriteFlags writeFlags)
{
using (completionQueue.NewScope())
{
var ctx = BatchContextSafeHandle.Create();
completionQueue.CompletionRegistry.RegisterBatchCompletion(ctx, (success, context) => callback(success, context.GetReceivedStatusOnClient(), context.GetReceivedMessage(), context.GetReceivedInitialMetadata()));
Native.grpcsharp_call_start_unary(this, ctx, payload, new UIntPtr((ulong)payload.Length), metadataArray, writeFlags)
.CheckOk();
}
}
public void StartUnary(BatchContextSafeHandle ctx, byte[] payload, MetadataArraySafeHandle metadataArray, WriteFlags writeFlags)
{
using (Profilers.ForCurrentThread().NewScope("CallSafeHandle.StartUnary"))
{
Native.grpcsharp_call_start_unary(this, ctx, payload, new UIntPtr((ulong)payload.Length), metadataArray, writeFlags)
.CheckOk();
}
}
public void StartClientStreaming(UnaryResponseClientHandler callback, MetadataArraySafeHandle metadataArray)
{
using (completionQueue.NewScope())
{
var ctx = BatchContextSafeHandle.Create();
completionQueue.CompletionRegistry.RegisterBatchCompletion(ctx, (success, context) => callback(success, context.GetReceivedStatusOnClient(), context.GetReceivedMessage(), context.GetReceivedInitialMetadata()));
Native.grpcsharp_call_start_client_streaming(this, ctx, metadataArray).CheckOk();
}
}
public void StartServerStreaming(ReceivedStatusOnClientHandler callback, byte[] payload, MetadataArraySafeHandle metadataArray, WriteFlags writeFlags)
{
using (completionQueue.NewScope())
{
var ctx = BatchContextSafeHandle.Create();
completionQueue.CompletionRegistry.RegisterBatchCompletion(ctx, (success, context) => callback(success, context.GetReceivedStatusOnClient()));
Native.grpcsharp_call_start_server_streaming(this, ctx, payload, new UIntPtr((ulong)payload.Length), metadataArray, writeFlags).CheckOk();
}
}
public void StartDuplexStreaming(ReceivedStatusOnClientHandler callback, MetadataArraySafeHandle metadataArray)
{
using (completionQueue.NewScope())
{
var ctx = BatchContextSafeHandle.Create();
completionQueue.CompletionRegistry.RegisterBatchCompletion(ctx, (success, context) => callback(success, context.GetReceivedStatusOnClient()));
Native.grpcsharp_call_start_duplex_streaming(this, ctx, metadataArray).CheckOk();
}
}
public void StartSendMessage(SendCompletionHandler callback, byte[] payload, WriteFlags writeFlags, bool sendEmptyInitialMetadata)
{
using (completionQueue.NewScope())
{
var ctx = BatchContextSafeHandle.Create();
completionQueue.CompletionRegistry.RegisterBatchCompletion(ctx, (success, context) => callback(success));
Native.grpcsharp_call_send_message(this, ctx, payload, new UIntPtr((ulong)payload.Length), writeFlags, sendEmptyInitialMetadata).CheckOk();
}
}
public void StartSendCloseFromClient(SendCompletionHandler callback)
{
using (completionQueue.NewScope())
{
var ctx = BatchContextSafeHandle.Create();
completionQueue.CompletionRegistry.RegisterBatchCompletion(ctx, (success, context) => callback(success));
Native.grpcsharp_call_send_close_from_client(this, ctx).CheckOk();
}
}
public void StartSendStatusFromServer(SendCompletionHandler callback, Status status, MetadataArraySafeHandle metadataArray, bool sendEmptyInitialMetadata,
byte[] optionalPayload, WriteFlags writeFlags)
{
using (completionQueue.NewScope())
{
var ctx = BatchContextSafeHandle.Create();
var optionalPayloadLength = optionalPayload != null ? new UIntPtr((ulong)optionalPayload.Length) : UIntPtr.Zero;
completionQueue.CompletionRegistry.RegisterBatchCompletion(ctx, (success, context) => callback(success));
Native.grpcsharp_call_send_status_from_server(this, ctx, status.StatusCode, status.Detail, metadataArray, sendEmptyInitialMetadata,
optionalPayload, optionalPayloadLength, writeFlags).CheckOk();
}
}
public void StartReceiveMessage(ReceivedMessageHandler callback)
{
using (completionQueue.NewScope())
{
var ctx = BatchContextSafeHandle.Create();
completionQueue.CompletionRegistry.RegisterBatchCompletion(ctx, (success, context) => callback(success, context.GetReceivedMessage()));
Native.grpcsharp_call_recv_message(this, ctx).CheckOk();
}
}
public void StartReceiveInitialMetadata(ReceivedResponseHeadersHandler callback)
{
using (completionQueue.NewScope())
{
var ctx = BatchContextSafeHandle.Create();
completionQueue.CompletionRegistry.RegisterBatchCompletion(ctx, (success, context) => callback(success, context.GetReceivedInitialMetadata()));
Native.grpcsharp_call_recv_initial_metadata(this, ctx).CheckOk();
}
}
public void StartServerSide(ReceivedCloseOnServerHandler callback)
{
using (completionQueue.NewScope())
{
var ctx = BatchContextSafeHandle.Create();
completionQueue.CompletionRegistry.RegisterBatchCompletion(ctx, (success, context) => callback(success, context.GetReceivedCloseOnServerCancelled()));
Native.grpcsharp_call_start_serverside(this, ctx).CheckOk();
}
}
public void StartSendInitialMetadata(SendCompletionHandler callback, MetadataArraySafeHandle metadataArray)
{
using (completionQueue.NewScope())
{
var ctx = BatchContextSafeHandle.Create();
completionQueue.CompletionRegistry.RegisterBatchCompletion(ctx, (success, context) => callback(success));
Native.grpcsharp_call_send_initial_metadata(this, ctx, metadataArray).CheckOk();
}
}
public void Cancel()
{
Native.grpcsharp_call_cancel(this).CheckOk();
}
public void CancelWithStatus(Status status)
{
Native.grpcsharp_call_cancel_with_status(this, status.StatusCode, status.Detail).CheckOk();
}
public string GetPeer()
{
using (var cstring = Native.grpcsharp_call_get_peer(this))
{
return cstring.GetValue();
}
}
protected override bool ReleaseHandle()
{
Native.grpcsharp_call_destroy(handle);
return true;
}
private static uint GetFlags(bool buffered)
{
return buffered ? 0 : GRPC_WRITE_BUFFER_HINT;
}
}
}
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