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annotate Implab.ServiceHost/Unity/ContainerBuilder.cs @ 281:e0916ddc9950 v3 tip

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code cleanup and refactoring
author cin
date Fri, 01 Jun 2018 21:35:24 +0300
parents f07be402ab02
children
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1 using System;
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2 using System.IO;
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3 using System.Reflection;
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4 using Implab.Diagnostics;
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5 using Unity;
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6
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7 namespace Implab.ServiceHost.Unity {
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8 using static Trace<ContainerBuilder>;
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9
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10 public class ContainerBuilder {
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11
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12 readonly TypeResolver m_resolver;
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13
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14 readonly IUnityContainer m_container;
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15
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16 readonly ContainerConfigurationSchema m_schema;
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17
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18 Uri m_location;
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19
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20 public IUnityContainer Container {
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21 get {
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22 return m_container;
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23 }
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24 }
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25
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26 public ContainerBuilder() : this(null, null) {
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27 }
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28
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29 public ContainerBuilder(IUnityContainer container, ContainerConfigurationSchema schema) {
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30 m_container = container ?? new UnityContainer();
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31 m_resolver = new TypeResolver();
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32 m_schema = schema ?? ContainerConfigurationSchema.Default;
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33 }
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34
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35 public Type ResolveType(string typeReference) {
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36 return string.IsNullOrEmpty(typeReference) ? null : m_resolver.Resolve(typeReference, true);
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37 }
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38
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39 public void Visit(ITypeRegistration registration) {
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40 Safe.ArgumentNotNull(registration, nameof(registration));
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41
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42 var registrationType = registration.GetRegistrationType(this);
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43 var implementationType = registration.GetImplementationType(this) ?? registrationType;
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44
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45 if (registrationType == null)
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46 throw new Exception($"A type must be specified for the registration {registration.Name}");
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47
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48 var builder = new TypeRegistrationBuilder(
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49 m_resolver,
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50 registrationType,
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51 implementationType
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52 );
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53
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54 builder.Lifetime = registration.GetLifetime(this);
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55
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56 if (registration.MemberInjections != null) {
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57 foreach(var member in registration.MemberInjections)
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58 member.Visit(builder);
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59 }
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60
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61 m_container.RegisterType(
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62 builder.RegistrationType,
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63 builder.ImplementationType,
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64 registration.Name,
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65 builder.Lifetime,
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66 builder.Injections
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67 );
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68 }
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69
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70 public void Visit(IInstanceRegistration registration) {
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71 Safe.ArgumentNotNull(registration, nameof(registration));
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72
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73 var registrationType = registration.GetRegistrationType(this);
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74
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75 var builder = new InstanceRegistrationBuilder (
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76 m_resolver,
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77 registrationType
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78 );
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79
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80 builder.Lifetime = registration.GetLifetime(this);
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81
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82 if (registration.MemberInjections != null) {
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83 foreach(var member in registration.MemberInjections)
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84 member.Visit(builder.ValueBuilder);
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85 }
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86
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87 if (builder.RegistrationType == null && builder.ValueBuilder.ValueType == null)
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88 throw new Exception($"A type must be specified for the registration {registration.Name}");
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89
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90 m_container.RegisterInstance(
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91 builder.RegistrationType ?? builder.ValueBuilder.ValueType,
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92 registration.Name,
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93 builder.ValueBuilder.Value,
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94 builder.Lifetime
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95 );
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96 }
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97
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98 public void AddNamespace(string ns) {
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99 m_resolver.AddNamespace(ns);
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100 }
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101
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102 public void AddAssembly(string assembly) {
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103
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104 }
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105
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106 /// <summary>
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107 /// Includes the confguration. Creates a new <see cref="ContainerBuilder"/>,
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108 /// and loads the configuration to it. The created builder will share the
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109 /// container and will have its own isolated type resolver.
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110 /// </summary>
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111 /// <param name="file">A path to configuration relative to the current configuration.</param>
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112 public void Include(string file) {
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113 var includeContext = new ContainerBuilder(m_container, m_schema);
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114
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115 if (m_location != null) {
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116 var uri = new Uri(m_location, file);
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117 includeContext.LoadConfig(uri);
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118 } else {
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119 includeContext.LoadConfig(file);
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120 }
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121 }
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122
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123 /// <summary>
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124 /// Loads a configuration from the specified local file.
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125 /// </summary>
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126 /// <param name="file">The path to the configuration file.</param>
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127 public void LoadConfig(string file) {
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128 Safe.ArgumentNotEmpty(file, nameof(file));
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129
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130 LoadConfig(new Uri(Path.GetFullPath(file)));
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131 }
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132
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133 public void LoadConfig(Uri location) {
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134 Safe.ArgumentNotNull(location, nameof(location));
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135
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136 m_location = location;
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137
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138 var config = m_schema.LoadConfig(location.ToString());
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139 config.Visit(this);
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140 }
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141
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142 }
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143 }