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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.Runtime.InteropServices;
using Grpc.Core;
namespace Grpc.Core.Internal
{
/// <summary>
/// Not owned version of
/// grpcsharp_batch_context
/// </summary>
internal class BatchContextSafeHandle : SafeHandleZeroIsInvalid
{
[DllImport("grpc_csharp_ext.dll")]
static extern BatchContextSafeHandle grpcsharp_batch_context_create();
[DllImport("grpc_csharp_ext.dll")]
static extern IntPtr grpcsharp_batch_context_recv_message_length(BatchContextSafeHandle ctx);
[DllImport("grpc_csharp_ext.dll")]
static extern void grpcsharp_batch_context_recv_message_to_buffer(BatchContextSafeHandle ctx, byte[] buffer, UIntPtr bufferLen);
[DllImport("grpc_csharp_ext.dll")]
static extern StatusCode grpcsharp_batch_context_recv_status_on_client_status(BatchContextSafeHandle ctx);
[DllImport("grpc_csharp_ext.dll")]
static extern IntPtr grpcsharp_batch_context_recv_status_on_client_details(BatchContextSafeHandle ctx); // returns const char*
[DllImport("grpc_csharp_ext.dll")]
static extern CallSafeHandle grpcsharp_batch_context_server_rpc_new_call(BatchContextSafeHandle ctx);
[DllImport("grpc_csharp_ext.dll")]
static extern IntPtr grpcsharp_batch_context_server_rpc_new_method(BatchContextSafeHandle ctx); // returns const char*
[DllImport("grpc_csharp_ext.dll")]
static extern int grpcsharp_batch_context_recv_close_on_server_cancelled(BatchContextSafeHandle ctx);
[DllImport("grpc_csharp_ext.dll")]
static extern void grpcsharp_batch_context_destroy(IntPtr ctx);
private BatchContextSafeHandle()
{
}
public static BatchContextSafeHandle Create()
{
return grpcsharp_batch_context_create();
}
public IntPtr Handle
{
get
{
return handle;
}
}
public Status GetReceivedStatus()
{
// TODO: can the native method return string directly?
string details = Marshal.PtrToStringAnsi(grpcsharp_batch_context_recv_status_on_client_details(this));
return new Status(grpcsharp_batch_context_recv_status_on_client_status(this), details);
}
public byte[] GetReceivedMessage()
{
IntPtr len = grpcsharp_batch_context_recv_message_length(this);
if (len == new IntPtr(-1))
{
return null;
}
byte[] data = new byte[(int)len];
grpcsharp_batch_context_recv_message_to_buffer(this, data, new UIntPtr((ulong)data.Length));
return data;
}
public CallSafeHandle GetServerRpcNewCall()
{
return grpcsharp_batch_context_server_rpc_new_call(this);
}
public string GetServerRpcNewMethod()
{
return Marshal.PtrToStringAnsi(grpcsharp_batch_context_server_rpc_new_method(this));
}
public bool GetReceivedCloseOnServerCancelled()
{
return grpcsharp_batch_context_recv_close_on_server_cancelled(this) != 0;
}
protected override bool ReleaseHandle()
{
grpcsharp_batch_context_destroy(handle);
return true;
}
}
}
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