Revise the blob configurations.

framework/src/Volo.Abp.BlobStoring/Volo/Abp/BlobStoring/BlobContainerConfiguration.cs

@@ -1,10 +1,58 @@
 using System;
 using System.Collections.Generic;
+using JetBrains.Annotations;
 
 namespace Volo.Abp.BlobStoring
 {
-    public class BlobContainerConfiguration : Dictionary<string, object>
+    public class BlobContainerConfiguration
     {
         public Type ProviderType { get; set; }
+
+        [NotNull]
+        private readonly Dictionary<string, object> _properties;
+        
+        [CanBeNull]
+        private readonly BlobContainerConfiguration _fallbackConfiguration;
+        
+        public BlobContainerConfiguration(BlobContainerConfiguration fallbackConfiguration = null)
+        {
+            _fallbackConfiguration = fallbackConfiguration;
+            _properties = new Dictionary<string, object>();
+        }
+
+        [CanBeNull]
+        public T GetConfigurationOrDefault<T>(string name, T defaultValue = default)
+        {
+            return (T) GetConfigurationOrNull(name, defaultValue);
+        }
+        
+        [CanBeNull]
+        public object GetConfigurationOrNull(string name, object defaultValue = null)
+        {
+            return _properties.GetOrDefault(name) ??
+                   _fallbackConfiguration?.GetConfigurationOrNull(name, defaultValue) ??
+                   defaultValue;
+        }
+        
+        [NotNull]
+        public BlobContainerConfiguration SetConfiguration([NotNull] string name, [CanBeNull] object value)
+        {
+            Check.NotNullOrWhiteSpace(name, nameof(name));
+            Check.NotNull(value, nameof(value));
+            
+            _properties[name] = value;
+            
+            return this;
+        }
+        
+        [NotNull]
+        public BlobContainerConfiguration ClearConfiguration([NotNull] string name)
+        {
+            Check.NotNullOrWhiteSpace(name, nameof(name));
+
+            _properties.Remove(name);
+            
+            return this;
+        }
     }
 }

framework/src/Volo.Abp.BlobStoring/Volo/Abp/BlobStoring/BlobContainerConfigurationDictionary.cs

@@ -4,13 +4,16 @@ using JetBrains.Annotations;
 
 namespace Volo.Abp.BlobStoring
 {
-    public class BlobContainerConfigurationDictionary : Dictionary<string, BlobContainerConfiguration>
+    public class BlobContainerConfigurationDictionary
     {
         public BlobContainerConfiguration Default { get; }
 
+        private readonly Dictionary<string, BlobContainerConfiguration> _containers;
+
         public BlobContainerConfigurationDictionary()
         {
             Default = new BlobContainerConfiguration();
+            _containers = new Dictionary<string, BlobContainerConfiguration>();
         }
 
         public BlobContainerConfigurationDictionary Configure<TContainer>(
@@ -29,7 +32,7 @@ namespace Volo.Abp.BlobStoring
             Check.NotNullOrWhiteSpace(name, nameof(name));
             Check.NotNull(configureAction, nameof(configureAction));
             
-            configureAction(this.GetOrAdd(name, () => new BlobContainerConfiguration()));
+            configureAction(_containers.GetOrAdd(name, () => new BlobContainerConfiguration(Default)));
             
             return this;
         }
@@ -39,5 +42,23 @@ namespace Volo.Abp.BlobStoring
             configureAction(Default);
             return this;
         }
+        
+        [NotNull]
+        public BlobContainerConfiguration GetConfiguration<TContainer>([NotNull] string name)
+        {
+            Check.NotNullOrWhiteSpace(name, nameof(name));
+
+            return _containers.GetOrDefault(name) ?? 
+                   Default;
+        }
+
+        [NotNull]
+        public BlobContainerConfiguration GetConfiguration([NotNull] string name)
+        {
+            Check.NotNullOrWhiteSpace(name, nameof(name));
+
+            return _containers.GetOrDefault(name) ?? 
+                   Default;
+        }
     }
 }

framework/src/Volo.Abp.BlobStoring/Volo/Abp/BlobStoring/BlobContainerFactory.cs

@@ -26,7 +26,7 @@ namespace Volo.Abp.BlobStoring
         
         public virtual IBlobContainer Create(string name, CancellationToken cancellationToken = default)
         {
-            var configuration = Options.Containers.GetOrDefault(name) ?? Options.Containers.Default;
+            var configuration = Options.Containers.GetConfiguration(name);
             return new BlobContainerToProviderAdapter(
                 name,
                 configuration,

framework/test/Volo.Abp.BlobStoring.Tests/Volo/Abp/BlobStoring/AbpBlobStoringOptions_Tests.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using Microsoft.Extensions.Options;
 using Shouldly;
+using Volo.Abp.BlobStoring.Fakes;
 using Volo.Abp.BlobStoring.TestObjects;
 using Xunit;
 
@@ -19,12 +20,25 @@ namespace Volo.Abp.BlobStoring
         public void Should_Property_Set_And_Get_Options_For_Different_Containers()
         {
             var testContainer1Config = _options.Containers
-                .GetOrDefault(BlobContainerNameAttribute.GetContainerName<TestContainer1>());
+                .GetConfiguration(BlobContainerNameAttribute.GetContainerName<TestContainer1>());
-            testContainer1Config.ShouldContainKeyAndValue("TestConfig1", "TestValue1");
+            testContainer1Config.ProviderType.ShouldBe(typeof(FakeBlobProvider1));
+            testContainer1Config.GetConfigurationOrDefault<string>("TestConfig1").ShouldBe("TestValue1");
+            testContainer1Config.GetConfigurationOrDefault<string>("TestConfigDefault").ShouldBe("TestValueDefault");
             
             var testContainer2Config = _options.Containers
-                .GetOrDefault(BlobContainerNameAttribute.GetContainerName<TestContainer2>());
+                .GetConfiguration(BlobContainerNameAttribute.GetContainerName<TestContainer2>());
-            testContainer2Config.ShouldContainKeyAndValue("TestConfig2", "TestValue2");
+            testContainer2Config.ProviderType.ShouldBe(typeof(FakeBlobProvider2));
+            testContainer2Config.GetConfigurationOrNull("TestConfig2").ShouldBe("TestValue2");
+            testContainer2Config.GetConfigurationOrNull("TestConfigDefault").ShouldBe("TestValueDefault");
+        }
+        
+        [Fact]
+        public void Should_Fallback_To_Default_Configuration_If_Not_Specialized()
+        {
+            var config = _options.Containers
+                .GetConfiguration(BlobContainerNameAttribute.GetContainerName<TestContainer3>());
+            config.ProviderType.ShouldBe(typeof(FakeBlobProvider1));
+            config.GetConfigurationOrNull("TestConfigDefault").ShouldBe("TestValueDefault");
         }
     }
 }

framework/test/Volo.Abp.BlobStoring.Tests/Volo/Abp/BlobStoring/AbpBlobStoringTestModule.cs

@@ -25,17 +25,17 @@ namespace Volo.Abp.BlobStoring
                 options.Containers
                     .ConfigureDefault(container =>
                     {
-                        container["TestConfigDefault"] = "TestValueDefault";
+                        container.SetConfiguration("TestConfigDefault", "TestValueDefault");
                         container.ProviderType = typeof(FakeBlobProvider1);
                     })
                     .Configure<TestContainer1>(container =>
                     {
-                        container["TestConfig1"] = "TestValue1";
+                        container.SetConfiguration("TestConfig1", "TestValue1");
                         container.ProviderType = typeof(FakeBlobProvider1);
                     })
                     .Configure<TestContainer2>(container =>
                     {
-                        container["TestConfig2"] = "TestValue2";
+                        container.SetConfiguration("TestConfig2", "TestValue2");
                         container.ProviderType = typeof(FakeBlobProvider2);
                     });
             });