-
Notifications
You must be signed in to change notification settings - Fork 1.3k
/
ISubscribeInvoker.Default.cs
169 lines (144 loc) · 6.53 KB
/
ISubscribeInvoker.Default.cs
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
// Copyright (c) .NET Core Community. All rights reserved.
// Licensed under the MIT License. See License.txt in the project root for license information.
using System;
using System.Collections.Concurrent;
using System.ComponentModel;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using DotNetCore.CAP.Filter;
using DotNetCore.CAP.Messages;
using DotNetCore.CAP.Serialization;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Internal;
namespace DotNetCore.CAP.Internal;
public class SubscribeInvoker : ISubscribeInvoker
{
private readonly ConcurrentDictionary<string, ObjectMethodExecutor> _executors;
private readonly ISerializer _serializer;
private readonly IServiceProvider _serviceProvider;
public SubscribeInvoker(IServiceProvider serviceProvider, ISerializer serializer)
{
_serviceProvider = serviceProvider;
_serializer = serializer;
_executors = new ConcurrentDictionary<string, ObjectMethodExecutor>();
}
public async Task<ConsumerExecutedResult> InvokeAsync(ConsumerContext context,
CancellationToken cancellationToken = default)
{
cancellationToken.ThrowIfCancellationRequested();
var methodInfo = context.ConsumerDescriptor.MethodInfo;
var reflectedTypeHandle = methodInfo.ReflectedType!.TypeHandle.Value;
var methodHandle = methodInfo.MethodHandle.Value;
var key = $"{reflectedTypeHandle}_{methodHandle}";
var executor = _executors.GetOrAdd(key,
_ => ObjectMethodExecutor.Create(methodInfo, context.ConsumerDescriptor.ImplTypeInfo));
await using var scope = _serviceProvider.CreateAsyncScope();
var provider = scope.ServiceProvider;
var obj = GetInstance(provider, context);
var message = context.DeliverMessage;
var parameterDescriptors = context.ConsumerDescriptor.Parameters;
var executeParameters = new object?[parameterDescriptors.Count];
for (var i = 0; i < parameterDescriptors.Count; i++)
{
var parameterDescriptor = parameterDescriptors[i];
if (parameterDescriptor.IsFromCap)
{
executeParameters[i] = GetCapProvidedParameter(parameterDescriptor, message, cancellationToken);
}
else
{
if (message.Value != null)
{
// use ISerializer when reading from storage, skip other objects if not Json
if (_serializer.IsJsonType(message.Value))
{
executeParameters[i] =
_serializer.Deserialize(message.Value, parameterDescriptor.ParameterType);
}
else
{
var converter = TypeDescriptor.GetConverter(parameterDescriptor.ParameterType);
if (converter.CanConvertFrom(message.Value.GetType()))
{
executeParameters[i] = converter.ConvertFrom(message.Value);
}
else
{
if (parameterDescriptor.ParameterType.IsInstanceOfType(message.Value))
executeParameters[i] = message.Value;
else
executeParameters[i] =
Convert.ChangeType(message.Value, parameterDescriptor.ParameterType);
}
}
}
}
}
var filter = provider.GetService<ISubscribeFilter>();
object? resultObj = null;
try
{
if (filter != null)
{
var etContext = new ExecutingContext(context, executeParameters);
await filter.OnSubscribeExecutingAsync(etContext).ConfigureAwait(false);
executeParameters = etContext.Arguments;
}
resultObj = await ExecuteWithParameterAsync(executor, obj, executeParameters).ConfigureAwait(false);
if (filter != null)
{
var edContext = new ExecutedContext(context, resultObj);
await filter.OnSubscribeExecutedAsync(edContext).ConfigureAwait(false);
resultObj = edContext.Result;
}
}
catch (Exception e)
{
if (filter != null)
{
var exContext = new ExceptionContext(context, e);
await filter.OnSubscribeExceptionAsync(exContext).ConfigureAwait(false);
if (!exContext.ExceptionHandled) exContext.Exception.ReThrow();
if (exContext.Result != null) resultObj = exContext.Result;
}
else
{
throw;
}
}
var callbackName = message.GetCallbackName();
if (string.IsNullOrEmpty(callbackName))
{
return new ConsumerExecutedResult(resultObj, message.GetId(), null, null);
}
else
{
var capHeader = executeParameters.FirstOrDefault(x => x is CapHeader) as CapHeader;
return new ConsumerExecutedResult(resultObj, message.GetId(), callbackName, capHeader?.ResponseHeader);
}
}
private static object GetCapProvidedParameter(ParameterDescriptor parameterDescriptor, Message message,
CancellationToken cancellationToken)
{
if (typeof(CancellationToken).IsAssignableFrom(parameterDescriptor.ParameterType)) return cancellationToken;
if (parameterDescriptor.ParameterType.IsAssignableFrom(typeof(CapHeader)))
return new CapHeader(message.Headers);
throw new ArgumentException(parameterDescriptor.Name);
}
protected virtual object GetInstance(IServiceProvider provider, ConsumerContext context)
{
var srvType = context.ConsumerDescriptor.ServiceTypeInfo?.AsType();
var implType = context.ConsumerDescriptor.ImplTypeInfo.AsType();
object? obj = null;
if (srvType != null) obj = provider.GetServices(srvType).FirstOrDefault(o => o?.GetType() == implType);
if (obj == null) obj = ActivatorUtilities.GetServiceOrCreateInstance(provider, implType);
return obj;
}
private async Task<object?> ExecuteWithParameterAsync(ObjectMethodExecutor executor, object @class,
object?[] parameter)
{
if (executor.IsMethodAsync) return await executor.ExecuteAsync(@class, parameter);
return executor.Execute(@class, parameter);
}
}