1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
#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.Threading;
using System.Threading.Tasks;
using Google.GRPC.Core.Internal;
namespace Google.GRPC.Core
{
// NOTE: this class is work-in-progress
/// <summary>
/// Helper methods for generated stubs to make RPC calls.
/// </summary>
public static class Calls
{
public static TResponse BlockingUnaryCall<TRequest, TResponse>(Call<TRequest, TResponse> call, TRequest req, CancellationToken token)
{
//TODO: implement this in real synchronous style once new GRPC C core API is available.
return AsyncUnaryCall(call, req, token).Result;
}
public static async Task<TResponse> AsyncUnaryCall<TRequest, TResponse>(Call<TRequest, TResponse> call, TRequest req, CancellationToken token)
{
var asyncCall = new AsyncCall<TRequest, TResponse>(call.RequestSerializer, call.ResponseDeserializer);
asyncCall.Initialize(call.Channel, call.MethodName);
asyncCall.Start(false, GetCompletionQueue());
await asyncCall.WriteAsync(req);
await asyncCall.WritesCompletedAsync();
TResponse response = await asyncCall.ReadAsync();
Status status = await asyncCall.Finished;
if (status.StatusCode != StatusCode.GRPC_STATUS_OK)
{
throw new RpcException(status);
}
return response;
}
public static async Task AsyncServerStreamingCall<TRequest, TResponse>(Call<TRequest, TResponse> call, TRequest req, IObserver<TResponse> outputs, CancellationToken token)
{
var asyncCall = new AsyncCall<TRequest, TResponse>(call.RequestSerializer, call.ResponseDeserializer);
asyncCall.Initialize(call.Channel, call.MethodName);
asyncCall.Start(false, GetCompletionQueue());
asyncCall.StartReadingToStream(outputs);
await asyncCall.WriteAsync(req);
await asyncCall.WritesCompletedAsync();
}
public static ClientStreamingAsyncResult<TRequest, TResponse> AsyncClientStreamingCall<TRequest, TResponse>(Call<TRequest, TResponse> call, CancellationToken token)
{
var asyncCall = new AsyncCall<TRequest, TResponse>(call.RequestSerializer, call.ResponseDeserializer);
asyncCall.Initialize(call.Channel, call.MethodName);
asyncCall.Start(false, GetCompletionQueue());
var task = asyncCall.ReadAsync();
var inputs = new StreamingInputObserver<TRequest, TResponse>(asyncCall);
return new ClientStreamingAsyncResult<TRequest, TResponse>(task, inputs);
}
public static TResponse BlockingClientStreamingCall<TRequest, TResponse>(Call<TRequest, TResponse> call, IObservable<TRequest> inputs, CancellationToken token)
{
throw new NotImplementedException();
}
public static IObserver<TRequest> DuplexStreamingCall<TRequest, TResponse>(Call<TRequest, TResponse> call, IObserver<TResponse> outputs, CancellationToken token)
{
var asyncCall = new AsyncCall<TRequest, TResponse>(call.RequestSerializer, call.ResponseDeserializer);
asyncCall.Initialize(call.Channel, call.MethodName);
asyncCall.Start(false, GetCompletionQueue());
asyncCall.StartReadingToStream(outputs);
var inputs = new StreamingInputObserver<TRequest, TResponse>(asyncCall);
return inputs;
}
private static CompletionQueueSafeHandle GetCompletionQueue() {
return GrpcEnvironment.ThreadPool.CompletionQueue;
}
}
}
|
