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
|
#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.CompilerServices;
using System.Threading.Tasks;
namespace Grpc.Core
{
/// <summary>
/// Return type for bidirectional streaming calls.
/// </summary>
public sealed class AsyncDuplexStreamingCall<TRequest, TResponse> : IDisposable
{
readonly IClientStreamWriter<TRequest> requestStream;
readonly IAsyncStreamReader<TResponse> responseStream;
readonly Func<Status> getStatusFunc;
readonly Func<Metadata> getTrailersFunc;
readonly Action disposeAction;
public AsyncDuplexStreamingCall(IClientStreamWriter<TRequest> requestStream, IAsyncStreamReader<TResponse> responseStream, Func<Status> getStatusFunc, Func<Metadata> getTrailersFunc, Action disposeAction)
{
this.requestStream = requestStream;
this.responseStream = responseStream;
this.getStatusFunc = getStatusFunc;
this.getTrailersFunc = getTrailersFunc;
this.disposeAction = disposeAction;
}
/// <summary>
/// Async stream to read streaming responses.
/// </summary>
public IAsyncStreamReader<TResponse> ResponseStream
{
get
{
return responseStream;
}
}
/// <summary>
/// Async stream to send streaming requests.
/// </summary>
public IClientStreamWriter<TRequest> RequestStream
{
get
{
return requestStream;
}
}
/// <summary>
/// Gets the call status if the call has already finished.
/// Throws InvalidOperationException otherwise.
/// </summary>
public Status GetStatus()
{
return getStatusFunc();
}
/// <summary>
/// Gets the call trailing metadata if the call has already finished.
/// Throws InvalidOperationException otherwise.
/// </summary>
public Metadata GetTrailers()
{
return getTrailersFunc();
}
/// <summary>
/// Provides means to cleanup after the call.
/// If the call has already finished normally (request stream has been completed and response stream has been fully read), doesn't do anything.
/// Otherwise, requests cancellation of the call which should terminate all pending async operations associated with the call.
/// As a result, all resources being used by the call should be released eventually.
/// </summary>
public void Dispose()
{
disposeAction.Invoke();
}
}
}
|
