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-rw-r--r--src/csharp/Grpc.Core/Internal/AsyncCall.cs20
-rw-r--r--src/csharp/Grpc.Core/Internal/AsyncCallBase.cs63
-rw-r--r--src/csharp/Grpc.Core/Internal/AsyncCallServer.cs58
-rw-r--r--src/csharp/Grpc.Core/Internal/CallSafeHandle.cs7
-rw-r--r--src/csharp/Grpc.Core/Internal/ClientResponseStream.cs4
-rw-r--r--src/csharp/Grpc.Core/Internal/INativeCall.cs2
-rw-r--r--src/csharp/Grpc.Core/Internal/NativeMethods.cs18
-rw-r--r--src/csharp/Grpc.Core/Internal/ServerCallHandler.cs79
-rw-r--r--src/csharp/Grpc.Core/Internal/ServerRequestStream.cs4
-rw-r--r--src/csharp/Grpc.Core/Internal/ServerResponseStream.cs7
10 files changed, 151 insertions, 111 deletions
diff --git a/src/csharp/Grpc.Core/Internal/AsyncCall.cs b/src/csharp/Grpc.Core/Internal/AsyncCall.cs
index 50ba617cdb..55351869b5 100644
--- a/src/csharp/Grpc.Core/Internal/AsyncCall.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCall.cs
@@ -57,7 +57,7 @@ namespace Grpc.Core.Internal
// Completion of a pending unary response if not null.
TaskCompletionSource<TResponse> unaryResponseTcs;
- // Indicates that steaming call has finished.
+ // Indicates that response streaming call has finished.
TaskCompletionSource<object> streamingCallFinishedTcs = new TaskCompletionSource<object>();
// Response headers set here once received.
@@ -241,11 +241,10 @@ namespace Grpc.Core.Internal
/// <summary>
/// Receives a streaming response. Only one pending read action is allowed at any given time.
- /// completionDelegate is called when the operation finishes.
/// </summary>
- public void StartReadMessage(AsyncCompletionDelegate<TResponse> completionDelegate)
+ public Task<TResponse> ReadMessageAsync()
{
- StartReadMessageInternal(completionDelegate);
+ return ReadMessageInternalAsync();
}
/// <summary>
@@ -444,6 +443,19 @@ namespace Grpc.Core.Internal
}
}
+ protected override void CheckSendingAllowed(bool allowFinished)
+ {
+ base.CheckSendingAllowed(true);
+
+ // throwing RpcException if we already received status on client
+ // side makes the most sense.
+ // Note that this throws even for StatusCode.OK.
+ if (!allowFinished && finishedStatus.HasValue)
+ {
+ throw new RpcException(finishedStatus.Value.Status);
+ }
+ }
+
/// <summary>
/// Handles receive status completion for calls with streaming response.
/// </summary>
diff --git a/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs b/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs
index ccd047f469..4de23706b2 100644
--- a/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCallBase.cs
@@ -68,7 +68,8 @@ namespace Grpc.Core.Internal
protected bool cancelRequested;
protected AsyncCompletionDelegate<object> sendCompletionDelegate; // Completion of a pending send or sendclose if not null.
- protected AsyncCompletionDelegate<TRead> readCompletionDelegate; // Completion of a pending send or sendclose if not null.
+ protected TaskCompletionSource<TRead> streamingReadTcs; // Completion of a pending streaming read if not null.
+ protected TaskCompletionSource<object> sendStatusFromServerTcs;
protected bool readingDone; // True if last read (i.e. read with null payload) was already received.
protected bool halfcloseRequested; // True if send close have been initiated.
@@ -150,15 +151,25 @@ namespace Grpc.Core.Internal
/// Initiates reading a message. Only one read operation can be active at a time.
/// completionDelegate is invoked upon completion.
/// </summary>
- protected void StartReadMessageInternal(AsyncCompletionDelegate<TRead> completionDelegate)
+ protected Task<TRead> ReadMessageInternalAsync()
{
lock (myLock)
{
- GrpcPreconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");
- CheckReadingAllowed();
+ GrpcPreconditions.CheckState(started);
+ if (readingDone)
+ {
+ // the last read that returns null or throws an exception is idempotent
+ // and maintain its state.
+ GrpcPreconditions.CheckState(streamingReadTcs != null, "Call does not support streaming reads.");
+ return streamingReadTcs.Task;
+ }
+
+ GrpcPreconditions.CheckState(streamingReadTcs == null, "Only one read can be pending at a time");
+ GrpcPreconditions.CheckState(!disposed);
call.StartReceiveMessage(HandleReadFinished);
- readCompletionDelegate = completionDelegate;
+ streamingReadTcs = new TaskCompletionSource<TRead>();
+ return streamingReadTcs.Task;
}
}
@@ -202,7 +213,7 @@ namespace Grpc.Core.Internal
{
}
- protected void CheckSendingAllowed(bool allowFinished)
+ protected virtual void CheckSendingAllowed(bool allowFinished)
{
GrpcPreconditions.CheckState(started);
CheckNotCancelled();
@@ -213,15 +224,6 @@ namespace Grpc.Core.Internal
GrpcPreconditions.CheckState(sendCompletionDelegate == null, "Only one write can be pending at a time");
}
- protected virtual void CheckReadingAllowed()
- {
- GrpcPreconditions.CheckState(started);
- GrpcPreconditions.CheckState(!disposed);
-
- GrpcPreconditions.CheckState(!readingDone, "Stream has already been closed.");
- GrpcPreconditions.CheckState(readCompletionDelegate == null, "Only one read can be pending at a time");
- }
-
protected void CheckNotCancelled()
{
if (cancelRequested)
@@ -322,22 +324,18 @@ namespace Grpc.Core.Internal
/// </summary>
protected void HandleSendStatusFromServerFinished(bool success)
{
- AsyncCompletionDelegate<object> origCompletionDelegate = null;
lock (myLock)
{
- origCompletionDelegate = sendCompletionDelegate;
- sendCompletionDelegate = null;
-
ReleaseResourcesIfPossible();
}
if (!success)
{
- FireCompletion(origCompletionDelegate, null, new InvalidOperationException("Error sending status from server."));
+ sendStatusFromServerTcs.SetException(new InvalidOperationException("Error sending status from server."));
}
else
{
- FireCompletion(origCompletionDelegate, null, null);
+ sendStatusFromServerTcs.SetResult(null);
}
}
@@ -346,15 +344,17 @@ namespace Grpc.Core.Internal
/// </summary>
protected void HandleReadFinished(bool success, byte[] receivedMessage)
{
+ // if success == false, received message will be null. It that case we will
+ // treat this completion as the last read an rely on C core to handle the failed
+ // read (e.g. deliver approriate statusCode on the clientside).
+
TRead msg = default(TRead);
var deserializeException = (success && receivedMessage != null) ? TryDeserialize(receivedMessage, out msg) : null;
- AsyncCompletionDelegate<TRead> origCompletionDelegate = null;
+ TaskCompletionSource<TRead> origTcs = null;
lock (myLock)
{
- origCompletionDelegate = readCompletionDelegate;
- readCompletionDelegate = null;
-
+ origTcs = streamingReadTcs;
if (receivedMessage == null)
{
// This was the last read.
@@ -364,20 +364,25 @@ namespace Grpc.Core.Internal
if (deserializeException != null && IsClient)
{
readingDone = true;
+
+ // TODO(jtattermusch): it might be too late to set the status
CancelWithStatus(DeserializeResponseFailureStatus);
}
+ if (!readingDone)
+ {
+ streamingReadTcs = null;
+ }
+
ReleaseResourcesIfPossible();
}
- // TODO: handle the case when success==false
-
if (deserializeException != null && !IsClient)
{
- FireCompletion(origCompletionDelegate, default(TRead), new IOException("Failed to deserialize request message.", deserializeException));
+ origTcs.SetException(new IOException("Failed to deserialize request message.", deserializeException));
return;
}
- FireCompletion(origCompletionDelegate, msg, null);
+ origTcs.SetResult(msg);
}
}
}
diff --git a/src/csharp/Grpc.Core/Internal/AsyncCallServer.cs b/src/csharp/Grpc.Core/Internal/AsyncCallServer.cs
index bea2b3660c..b1566b44a7 100644
--- a/src/csharp/Grpc.Core/Internal/AsyncCallServer.cs
+++ b/src/csharp/Grpc.Core/Internal/AsyncCallServer.cs
@@ -65,6 +65,15 @@ namespace Grpc.Core.Internal
}
/// <summary>
+ /// Only for testing purposes.
+ /// </summary>
+ public void InitializeForTesting(INativeCall call)
+ {
+ server.AddCallReference(this);
+ InitializeInternal(call);
+ }
+
+ /// <summary>
/// Starts a server side call.
/// </summary>
public Task ServerSideCallAsync()
@@ -91,11 +100,10 @@ namespace Grpc.Core.Internal
/// <summary>
/// Receives a streaming request. Only one pending read action is allowed at any given time.
- /// completionDelegate is called when the operation finishes.
/// </summary>
- public void StartReadMessage(AsyncCompletionDelegate<TRequest> completionDelegate)
+ public Task<TRequest> ReadMessageAsync()
{
- StartReadMessageInternal(completionDelegate);
+ return ReadMessageInternalAsync();
}
/// <summary>
@@ -128,24 +136,33 @@ namespace Grpc.Core.Internal
}
/// <summary>
- /// Sends call result status, also indicating server is done with streaming responses.
- /// Only one pending send action is allowed at any given time.
- /// completionDelegate is called when the operation finishes.
+ /// Sends call result status, indicating we are done with writes.
+ /// Sending a status different from StatusCode.OK will also implicitly cancel the call.
/// </summary>
- public void StartSendStatusFromServer(Status status, Metadata trailers, AsyncCompletionDelegate<object> completionDelegate)
+ public Task SendStatusFromServerAsync(Status status, Metadata trailers, Tuple<TResponse, WriteFlags> optionalWrite)
{
+ byte[] payload = optionalWrite != null ? UnsafeSerialize(optionalWrite.Item1) : null;
+ var writeFlags = optionalWrite != null ? optionalWrite.Item2 : default(WriteFlags);
+
lock (myLock)
{
- GrpcPreconditions.CheckNotNull(completionDelegate, "Completion delegate cannot be null");
- CheckSendingAllowed(allowFinished: false);
+ GrpcPreconditions.CheckState(started);
+ GrpcPreconditions.CheckState(!disposed);
+ GrpcPreconditions.CheckState(!halfcloseRequested, "Can only send status from server once.");
using (var metadataArray = MetadataArraySafeHandle.Create(trailers))
{
- call.StartSendStatusFromServer(HandleSendStatusFromServerFinished, status, metadataArray, !initialMetadataSent);
+ call.StartSendStatusFromServer(HandleSendStatusFromServerFinished, status, metadataArray, !initialMetadataSent,
+ payload, writeFlags);
}
halfcloseRequested = true;
- readingDone = true;
- sendCompletionDelegate = completionDelegate;
+ initialMetadataSent = true;
+ sendStatusFromServerTcs = new TaskCompletionSource<object>();
+ if (optionalWrite != null)
+ {
+ streamingWritesCounter++;
+ }
+ return sendStatusFromServerTcs.Task;
}
}
@@ -174,12 +191,6 @@ namespace Grpc.Core.Internal
get { return false; }
}
- protected override void CheckReadingAllowed()
- {
- base.CheckReadingAllowed();
- GrpcPreconditions.CheckArgument(!cancelRequested);
- }
-
protected override void OnAfterReleaseResources()
{
server.RemoveCallReference(this);
@@ -190,12 +201,21 @@ namespace Grpc.Core.Internal
/// </summary>
private void HandleFinishedServerside(bool success, bool cancelled)
{
+ // NOTE: because this event is a result of batch containing GRPC_OP_RECV_CLOSE_ON_SERVER,
+ // success will be always set to true.
lock (myLock)
{
finished = true;
+ if (streamingReadTcs == null)
+ {
+ // if there's no pending read, readingDone=true will dispose now.
+ // if there is a pending read, we will dispose once that read finishes.
+ readingDone = true;
+ streamingReadTcs = new TaskCompletionSource<TRequest>();
+ streamingReadTcs.SetResult(default(TRequest));
+ }
ReleaseResourcesIfPossible();
}
- // TODO(jtattermusch): handle error
if (cancelled)
{
diff --git a/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs b/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs
index 500653ba5d..244b97d4a4 100644
--- a/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs
+++ b/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs
@@ -135,13 +135,16 @@ namespace Grpc.Core.Internal
}
}
- public void StartSendStatusFromServer(SendCompletionHandler callback, Status status, MetadataArraySafeHandle metadataArray, bool sendEmptyInitialMetadata)
+ 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;
completionRegistry.RegisterBatchCompletion(ctx, (success, context) => callback(success));
- Native.grpcsharp_call_send_status_from_server(this, ctx, status.StatusCode, status.Detail, metadataArray, sendEmptyInitialMetadata).CheckOk();
+ Native.grpcsharp_call_send_status_from_server(this, ctx, status.StatusCode, status.Detail, metadataArray, sendEmptyInitialMetadata,
+ optionalPayload, optionalPayloadLength, writeFlags).CheckOk();
}
}
diff --git a/src/csharp/Grpc.Core/Internal/ClientResponseStream.cs b/src/csharp/Grpc.Core/Internal/ClientResponseStream.cs
index d6e34a0f04..ad9423ff58 100644
--- a/src/csharp/Grpc.Core/Internal/ClientResponseStream.cs
+++ b/src/csharp/Grpc.Core/Internal/ClientResponseStream.cs
@@ -68,9 +68,7 @@ namespace Grpc.Core.Internal
{
throw new InvalidOperationException("Cancellation of individual reads is not supported.");
}
- var taskSource = new AsyncCompletionTaskSource<TResponse>();
- call.StartReadMessage(taskSource.CompletionDelegate);
- var result = await taskSource.Task.ConfigureAwait(false);
+ var result = await call.ReadMessageAsync().ConfigureAwait(false);
this.current = result;
if (result == null)
diff --git a/src/csharp/Grpc.Core/Internal/INativeCall.cs b/src/csharp/Grpc.Core/Internal/INativeCall.cs
index cbef599139..cd3719cb50 100644
--- a/src/csharp/Grpc.Core/Internal/INativeCall.cs
+++ b/src/csharp/Grpc.Core/Internal/INativeCall.cs
@@ -78,7 +78,7 @@ namespace Grpc.Core.Internal
void StartSendCloseFromClient(SendCompletionHandler callback);
- void StartSendStatusFromServer(SendCompletionHandler callback, Grpc.Core.Status status, MetadataArraySafeHandle metadataArray, bool sendEmptyInitialMetadata);
+ void StartSendStatusFromServer(SendCompletionHandler callback, Grpc.Core.Status status, MetadataArraySafeHandle metadataArray, bool sendEmptyInitialMetadata, byte[] optionalPayload, Grpc.Core.WriteFlags writeFlags);
void StartServerSide(ReceivedCloseOnServerHandler callback);
}
diff --git a/src/csharp/Grpc.Core/Internal/NativeMethods.cs b/src/csharp/Grpc.Core/Internal/NativeMethods.cs
index 9ee0ba3bc0..c277c73ef0 100644
--- a/src/csharp/Grpc.Core/Internal/NativeMethods.cs
+++ b/src/csharp/Grpc.Core/Internal/NativeMethods.cs
@@ -421,20 +421,21 @@ namespace Grpc.Core.Internal
public delegate GRPCCallError grpcsharp_call_cancel_delegate(CallSafeHandle call);
public delegate GRPCCallError grpcsharp_call_cancel_with_status_delegate(CallSafeHandle call, StatusCode status, string description);
public delegate GRPCCallError grpcsharp_call_start_unary_delegate(CallSafeHandle call,
- BatchContextSafeHandle ctx, byte[] send_buffer, UIntPtr send_buffer_len, MetadataArraySafeHandle metadataArray, WriteFlags writeFlags);
+ BatchContextSafeHandle ctx, byte[] sendBuffer, UIntPtr sendBufferLen, MetadataArraySafeHandle metadataArray, WriteFlags writeFlags);
public delegate GRPCCallError grpcsharp_call_start_client_streaming_delegate(CallSafeHandle call,
BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray);
public delegate GRPCCallError grpcsharp_call_start_server_streaming_delegate(CallSafeHandle call,
- BatchContextSafeHandle ctx, byte[] send_buffer, UIntPtr send_buffer_len,
+ BatchContextSafeHandle ctx, byte[] sendBuffer, UIntPtr sendBufferLen,
MetadataArraySafeHandle metadataArray, WriteFlags writeFlags);
public delegate GRPCCallError grpcsharp_call_start_duplex_streaming_delegate(CallSafeHandle call,
BatchContextSafeHandle ctx, MetadataArraySafeHandle metadataArray);
public delegate GRPCCallError grpcsharp_call_send_message_delegate(CallSafeHandle call,
- BatchContextSafeHandle ctx, byte[] send_buffer, UIntPtr send_buffer_len, WriteFlags writeFlags, bool sendEmptyInitialMetadata);
+ BatchContextSafeHandle ctx, byte[] sendBuffer, UIntPtr sendBufferLen, WriteFlags writeFlags, bool sendEmptyInitialMetadata);
public delegate GRPCCallError grpcsharp_call_send_close_from_client_delegate(CallSafeHandle call,
BatchContextSafeHandle ctx);
public delegate GRPCCallError grpcsharp_call_send_status_from_server_delegate(CallSafeHandle call,
- BatchContextSafeHandle ctx, StatusCode statusCode, string statusMessage, MetadataArraySafeHandle metadataArray, bool sendEmptyInitialMetadata);
+ BatchContextSafeHandle ctx, StatusCode statusCode, string statusMessage, MetadataArraySafeHandle metadataArray, bool sendEmptyInitialMetadata,
+ byte[] optionalSendBuffer, UIntPtr optionalSendBufferLen, WriteFlags writeFlags);
public delegate GRPCCallError grpcsharp_call_recv_message_delegate(CallSafeHandle call,
BatchContextSafeHandle ctx);
public delegate GRPCCallError grpcsharp_call_recv_initial_metadata_delegate(CallSafeHandle call,
@@ -593,7 +594,7 @@ namespace Grpc.Core.Internal
[DllImport("grpc_csharp_ext.dll")]
public static extern GRPCCallError grpcsharp_call_start_unary(CallSafeHandle call,
- BatchContextSafeHandle ctx, byte[] send_buffer, UIntPtr send_buffer_len, MetadataArraySafeHandle metadataArray, WriteFlags writeFlags);
+ BatchContextSafeHandle ctx, byte[] sendBuffer, UIntPtr sendBufferLen, MetadataArraySafeHandle metadataArray, WriteFlags writeFlags);
[DllImport("grpc_csharp_ext.dll")]
public static extern GRPCCallError grpcsharp_call_start_client_streaming(CallSafeHandle call,
@@ -601,7 +602,7 @@ namespace Grpc.Core.Internal
[DllImport("grpc_csharp_ext.dll")]
public static extern GRPCCallError grpcsharp_call_start_server_streaming(CallSafeHandle call,
- BatchContextSafeHandle ctx, byte[] send_buffer, UIntPtr send_buffer_len,
+ BatchContextSafeHandle ctx, byte[] sendBuffer, UIntPtr sendBufferLen,
MetadataArraySafeHandle metadataArray, WriteFlags writeFlags);
[DllImport("grpc_csharp_ext.dll")]
@@ -610,7 +611,7 @@ namespace Grpc.Core.Internal
[DllImport("grpc_csharp_ext.dll")]
public static extern GRPCCallError grpcsharp_call_send_message(CallSafeHandle call,
- BatchContextSafeHandle ctx, byte[] send_buffer, UIntPtr send_buffer_len, WriteFlags writeFlags, bool sendEmptyInitialMetadata);
+ BatchContextSafeHandle ctx, byte[] sendBuffer, UIntPtr sendBufferLen, WriteFlags writeFlags, bool sendEmptyInitialMetadata);
[DllImport("grpc_csharp_ext.dll")]
public static extern GRPCCallError grpcsharp_call_send_close_from_client(CallSafeHandle call,
@@ -618,7 +619,8 @@ namespace Grpc.Core.Internal
[DllImport("grpc_csharp_ext.dll")]
public static extern GRPCCallError grpcsharp_call_send_status_from_server(CallSafeHandle call,
- BatchContextSafeHandle ctx, StatusCode statusCode, string statusMessage, MetadataArraySafeHandle metadataArray, bool sendEmptyInitialMetadata);
+ BatchContextSafeHandle ctx, StatusCode statusCode, string statusMessage, MetadataArraySafeHandle metadataArray, bool sendEmptyInitialMetadata,
+ byte[] optionalSendBuffer, UIntPtr optionalSendBufferLen, WriteFlags writeFlags);
[DllImport("grpc_csharp_ext.dll")]
public static extern GRPCCallError grpcsharp_call_recv_message(CallSafeHandle call,
diff --git a/src/csharp/Grpc.Core/Internal/ServerCallHandler.cs b/src/csharp/Grpc.Core/Internal/ServerCallHandler.cs
index 1f83e51548..85b7a4b01e 100644
--- a/src/csharp/Grpc.Core/Internal/ServerCallHandler.cs
+++ b/src/csharp/Grpc.Core/Internal/ServerCallHandler.cs
@@ -75,29 +75,32 @@ namespace Grpc.Core.Internal
var responseStream = new ServerResponseStream<TRequest, TResponse>(asyncCall);
Status status;
+ Tuple<TResponse,WriteFlags> responseTuple = null;
var context = HandlerUtils.NewContext(newRpc, asyncCall.Peer, responseStream, asyncCall.CancellationToken);
try
{
GrpcPreconditions.CheckArgument(await requestStream.MoveNext().ConfigureAwait(false));
var request = requestStream.Current;
- // TODO(jtattermusch): we need to read the full stream so that native callhandle gets deallocated.
- GrpcPreconditions.CheckArgument(!await requestStream.MoveNext().ConfigureAwait(false));
- var result = await handler(request, context).ConfigureAwait(false);
+ var response = await handler(request, context).ConfigureAwait(false);
status = context.Status;
- await responseStream.WriteAsync(result).ConfigureAwait(false);
+ responseTuple = Tuple.Create(response, HandlerUtils.GetWriteFlags(context.WriteOptions));
}
catch (Exception e)
{
- Logger.Error(e, "Exception occured in handler.");
+ if (!(e is RpcException))
+ {
+ Logger.Warning(e, "Exception occured in handler.");
+ }
status = HandlerUtils.StatusFromException(e);
}
try
{
- await responseStream.WriteStatusAsync(status, context.ResponseTrailers).ConfigureAwait(false);
+ await asyncCall.SendStatusFromServerAsync(status, context.ResponseTrailers, responseTuple).ConfigureAwait(false);
}
- catch (OperationCanceledException)
+ catch (Exception)
{
- // Call has been already cancelled.
+ asyncCall.Cancel();
+ throw;
}
await finishedTask.ConfigureAwait(false);
}
@@ -136,24 +139,26 @@ namespace Grpc.Core.Internal
{
GrpcPreconditions.CheckArgument(await requestStream.MoveNext().ConfigureAwait(false));
var request = requestStream.Current;
- // TODO(jtattermusch): we need to read the full stream so that native callhandle gets deallocated.
- GrpcPreconditions.CheckArgument(!await requestStream.MoveNext().ConfigureAwait(false));
await handler(request, responseStream, context).ConfigureAwait(false);
status = context.Status;
}
catch (Exception e)
{
- Logger.Error(e, "Exception occured in handler.");
+ if (!(e is RpcException))
+ {
+ Logger.Warning(e, "Exception occured in handler.");
+ }
status = HandlerUtils.StatusFromException(e);
}
try
{
- await responseStream.WriteStatusAsync(status, context.ResponseTrailers).ConfigureAwait(false);
+ await asyncCall.SendStatusFromServerAsync(status, context.ResponseTrailers, null).ConfigureAwait(false);
}
- catch (OperationCanceledException)
+ catch (Exception)
{
- // Call has been already cancelled.
+ asyncCall.Cancel();
+ throw;
}
await finishedTask.ConfigureAwait(false);
}
@@ -187,33 +192,31 @@ namespace Grpc.Core.Internal
var responseStream = new ServerResponseStream<TRequest, TResponse>(asyncCall);
Status status;
+ Tuple<TResponse,WriteFlags> responseTuple = null;
var context = HandlerUtils.NewContext(newRpc, asyncCall.Peer, responseStream, asyncCall.CancellationToken);
try
{
- var result = await handler(requestStream, context).ConfigureAwait(false);
+ var response = await handler(requestStream, context).ConfigureAwait(false);
status = context.Status;
- try
- {
- await responseStream.WriteAsync(result).ConfigureAwait(false);
- }
- catch (OperationCanceledException)
- {
- status = Status.DefaultCancelled;
- }
+ responseTuple = Tuple.Create(response, HandlerUtils.GetWriteFlags(context.WriteOptions));
}
catch (Exception e)
{
- Logger.Error(e, "Exception occured in handler.");
+ if (!(e is RpcException))
+ {
+ Logger.Warning(e, "Exception occured in handler.");
+ }
status = HandlerUtils.StatusFromException(e);
}
try
{
- await responseStream.WriteStatusAsync(status, context.ResponseTrailers).ConfigureAwait(false);
+ await asyncCall.SendStatusFromServerAsync(status, context.ResponseTrailers, responseTuple).ConfigureAwait(false);
}
- catch (OperationCanceledException)
+ catch (Exception)
{
- // Call has been already cancelled.
+ asyncCall.Cancel();
+ throw;
}
await finishedTask.ConfigureAwait(false);
}
@@ -255,16 +258,20 @@ namespace Grpc.Core.Internal
}
catch (Exception e)
{
- Logger.Error(e, "Exception occured in handler.");
+ if (!(e is RpcException))
+ {
+ Logger.Warning(e, "Exception occured in handler.");
+ }
status = HandlerUtils.StatusFromException(e);
}
try
{
- await responseStream.WriteStatusAsync(status, context.ResponseTrailers).ConfigureAwait(false);
+ await asyncCall.SendStatusFromServerAsync(status, context.ResponseTrailers, null).ConfigureAwait(false);
}
- catch (OperationCanceledException)
+ catch (Exception)
{
- // Call has been already cancelled.
+ asyncCall.Cancel();
+ throw;
}
await finishedTask.ConfigureAwait(false);
}
@@ -282,9 +289,7 @@ namespace Grpc.Core.Internal
asyncCall.Initialize(newRpc.Call);
var finishedTask = asyncCall.ServerSideCallAsync();
- var responseStream = new ServerResponseStream<byte[], byte[]>(asyncCall);
-
- await responseStream.WriteStatusAsync(new Status(StatusCode.Unimplemented, ""), Metadata.Empty).ConfigureAwait(false);
+ await asyncCall.SendStatusFromServerAsync(new Status(StatusCode.Unimplemented, ""), Metadata.Empty, null).ConfigureAwait(false);
await finishedTask.ConfigureAwait(false);
}
}
@@ -300,10 +305,14 @@ namespace Grpc.Core.Internal
return rpcException.Status;
}
- // TODO(jtattermusch): what is the right status code here?
return new Status(StatusCode.Unknown, "Exception was thrown by handler.");
}
+ public static WriteFlags GetWriteFlags(WriteOptions writeOptions)
+ {
+ return writeOptions != null ? writeOptions.Flags : default(WriteFlags);
+ }
+
public static ServerCallContext NewContext<TRequest, TResponse>(ServerRpcNew newRpc, string peer, ServerResponseStream<TRequest, TResponse> serverResponseStream, CancellationToken cancellationToken)
where TRequest : class
where TResponse : class
diff --git a/src/csharp/Grpc.Core/Internal/ServerRequestStream.cs b/src/csharp/Grpc.Core/Internal/ServerRequestStream.cs
index e7be82c318..d76030d1ad 100644
--- a/src/csharp/Grpc.Core/Internal/ServerRequestStream.cs
+++ b/src/csharp/Grpc.Core/Internal/ServerRequestStream.cs
@@ -68,9 +68,7 @@ namespace Grpc.Core.Internal
{
throw new InvalidOperationException("Cancellation of individual reads is not supported.");
}
- var taskSource = new AsyncCompletionTaskSource<TRequest>();
- call.StartReadMessage(taskSource.CompletionDelegate);
- var result = await taskSource.Task.ConfigureAwait(false);
+ var result = await call.ReadMessageAsync().ConfigureAwait(false);
this.current = result;
return result != null;
}
diff --git a/src/csharp/Grpc.Core/Internal/ServerResponseStream.cs b/src/csharp/Grpc.Core/Internal/ServerResponseStream.cs
index 03e39efc02..ecfee0bfdd 100644
--- a/src/csharp/Grpc.Core/Internal/ServerResponseStream.cs
+++ b/src/csharp/Grpc.Core/Internal/ServerResponseStream.cs
@@ -57,13 +57,6 @@ namespace Grpc.Core.Internal
return taskSource.Task;
}
- public Task WriteStatusAsync(Status status, Metadata trailers)
- {
- var taskSource = new AsyncCompletionTaskSource<object>();
- call.StartSendStatusFromServer(status, trailers, taskSource.CompletionDelegate);
- return taskSource.Task;
- }
-
public Task WriteResponseHeadersAsync(Metadata responseHeaders)
{
var taskSource = new AsyncCompletionTaskSource<object>();
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-09 23:13:59 +0000