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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 Google.GRPC.Core.Internal;
namespace Google.GRPC.Core.Internal
{
/// <summary>
/// Observer that writes all arriving messages to a call abstraction (in blocking fashion)
/// and then halfcloses the call. Used for server-side call handling.
/// </summary>
internal class ServerWritingObserver<TWrite, TRead> : IObserver<TWrite>
{
readonly AsyncCall<TWrite, TRead> call;
public ServerWritingObserver(AsyncCall<TWrite, TRead> call)
{
this.call = call;
}
public void OnCompleted()
{
// TODO: how bad is the Wait here?
call.WriteStatusAsync(new Status(StatusCode.GRPC_STATUS_OK, "")).Wait();
}
public void OnError(Exception error)
{
// TODO: handle this...
throw new InvalidOperationException("This should never be called.");
}
public void OnNext(TWrite value)
{
// TODO: how bad is the Wait here?
call.WriteAsync(value).Wait();
}
}
}
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