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
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
#region Copyright notice and license
// Copyright 2015-2016, 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 Grpc.Core.Internal;
using Grpc.Core.Utils;
namespace Grpc.Core
{
/// <summary>
/// Generic base class for client-side stubs.
/// </summary>
public abstract class ClientBase<T> : ClientBase
where T : ClientBase<T>
{
/// <summary>
/// Initializes a new instance of <c>ClientBase</c> class that
/// throws <c>NotImplementedException</c> upon invocation of any RPC.
/// This constructor is only provided to allow creation of test doubles
/// for client classes (e.g. mocking requires a parameterless constructor).
/// </summary>
protected ClientBase() : base()
{
}
/// <summary>
/// Initializes a new instance of <c>ClientBase</c> class.
/// </summary>
/// <param name="configuration">The configuration.</param>
protected ClientBase(ClientBaseConfiguration configuration) : base(configuration)
{
}
/// <summary>
/// Initializes a new instance of <c>ClientBase</c> class.
/// </summary>
/// <param name="channel">The channel to use for remote call invocation.</param>
public ClientBase(Channel channel) : base(channel)
{
}
/// <summary>
/// Initializes a new instance of <c>ClientBase</c> class.
/// </summary>
/// <param name="callInvoker">The <c>CallInvoker</c> for remote call invocation.</param>
public ClientBase(CallInvoker callInvoker) : base(callInvoker)
{
}
/// <summary>
/// Creates a new client that sets host field for calls explicitly.
/// gRPC supports multiple "hosts" being served by a single server.
/// By default (if a client was not created by calling this method),
/// host <c>null</c> with the meaning "use default host" is used.
/// </summary>
public T WithHost(string host)
{
var newConfiguration = this.Configuration.WithHost(host);
return NewInstance(newConfiguration);
}
/// <summary>
/// Creates a new instance of client from given <c>ClientBaseConfiguration</c>.
/// </summary>
protected abstract T NewInstance(ClientBaseConfiguration configuration);
}
/// <summary>
/// Base class for client-side stubs.
/// </summary>
public abstract class ClientBase
{
readonly ClientBaseConfiguration configuration;
readonly CallInvoker callInvoker;
/// <summary>
/// Initializes a new instance of <c>ClientBase</c> class that
/// throws <c>NotImplementedException</c> upon invocation of any RPC.
/// This constructor is only provided to allow creation of test doubles
/// for client classes (e.g. mocking requires a parameterless constructor).
/// </summary>
protected ClientBase() : this(new UnimplementedCallInvoker())
{
}
/// <summary>
/// Initializes a new instance of <c>ClientBase</c> class.
/// </summary>
/// <param name="configuration">The configuration.</param>
protected ClientBase(ClientBaseConfiguration configuration)
{
this.configuration = GrpcPreconditions.CheckNotNull(configuration, "configuration");
this.callInvoker = configuration.CreateDecoratedCallInvoker();
}
/// <summary>
/// Initializes a new instance of <c>ClientBase</c> class.
/// </summary>
/// <param name="channel">The channel to use for remote call invocation.</param>
public ClientBase(Channel channel) : this(new DefaultCallInvoker(channel))
{
}
/// <summary>
/// Initializes a new instance of <c>ClientBase</c> class.
/// </summary>
/// <param name="callInvoker">The <c>CallInvoker</c> for remote call invocation.</param>
public ClientBase(CallInvoker callInvoker) : this(new ClientBaseConfiguration(callInvoker, null))
{
}
/// <summary>
/// Gets the call invoker.
/// </summary>
protected CallInvoker CallInvoker
{
get { return this.callInvoker; }
}
/// <summary>
/// Gets the configuration.
/// </summary>
internal ClientBaseConfiguration Configuration
{
get { return this.configuration; }
}
/// <summary>
/// Represents configuration of ClientBase. The class itself is visible to
/// subclasses, but contents are marked as internal to make the instances opaque.
/// The verbose name of this class was chosen to make name clash in generated code
/// less likely.
/// </summary>
protected internal class ClientBaseConfiguration
{
readonly CallInvoker undecoratedCallInvoker;
readonly string host;
internal ClientBaseConfiguration(CallInvoker undecoratedCallInvoker, string host)
{
this.undecoratedCallInvoker = GrpcPreconditions.CheckNotNull(undecoratedCallInvoker);
this.host = host;
}
internal CallInvoker CreateDecoratedCallInvoker()
{
return new InterceptingCallInvoker(undecoratedCallInvoker, hostInterceptor: (h) => host);
}
internal ClientBaseConfiguration WithHost(string host)
{
GrpcPreconditions.CheckNotNull(host, "host");
return new ClientBaseConfiguration(this.undecoratedCallInvoker, host);
}
}
}
}
|
