feat: Support azure blob storage auth with managed identity.

src/OrchardCore.Modules/OrchardCore.DataProtection.Azure/BlobOptions.cs

@@ -11,4 +11,6 @@ public class BlobOptions : IAsyncOptions
     public string BlobName { get; set; }
 
     public bool CreateContainer { get; set; } = true;
+
+    public string AzureClientName { get; set; }
 }

src/OrchardCore.Modules/OrchardCore.DataProtection.Azure/BlobOptionsSetup.cs

@@ -3,6 +3,7 @@
 using Azure.Storage.Blobs;
 using Azure.Storage.Blobs.Models;
 using Fluid;
+using Microsoft.Extensions.Azure;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
@@ -18,17 +19,20 @@ public class BlobOptionsSetup : IAsyncConfigureOptions<BlobOptions>
     private readonly IShellConfiguration _configuration;
     private readonly ShellOptions _shellOptions;
     private readonly ShellSettings _shellSettings;
+    private readonly IAzureClientFactory<BlobServiceClient> _azureClientFactory;
     private readonly ILogger _logger;
 
     public BlobOptionsSetup(
         IShellConfiguration configuration,
         IOptions<ShellOptions> shellOptions,
         ShellSettings shellSettings,
+        IAzureClientFactory<BlobServiceClient> azureClientFactory,
         ILogger<BlobOptionsSetup> logger)
     {
         _configuration = configuration;
         _shellOptions = shellOptions.Value;
         _shellSettings = shellSettings;
+        _azureClientFactory = azureClientFactory;
         _logger = logger;
     }
 
@@ -66,13 +70,24 @@ private async ValueTask ConfigureContainerNameAsync(BlobOptions options)
             try
             {
                 _logger.LogDebug("Testing data protection container {ContainerName} existence", options.ContainerName);
-                var blobContainer = new BlobContainerClient(options.ConnectionString, options.ContainerName);
+
+                BlobContainerClient blobContainer;
+
+                if (!string.IsNullOrWhiteSpace(options.AzureClientName))
+                {
+                    blobContainer = _azureClientFactory.CreateClient(options.AzureClientName).GetBlobContainerClient(options.ContainerName);
+                }
+                else
+                {
+                    blobContainer = new BlobContainerClient(options.ConnectionString, options.ContainerName);
+                }
+
                 var response = await blobContainer.CreateIfNotExistsAsync(PublicAccessType.None);
                 _logger.LogDebug("Data protection container {ContainerName} created.", options.ContainerName);
             }
             catch (Exception e)
             {
-                _logger.LogCritical(e, "Unable to connect to Azure Storage to configure data protection storage. Ensure that an application setting containing a valid Azure Storage connection string is available at `Modules:OrchardCore.DataProtection.Azure:ConnectionString`.");
+                _logger.LogCritical(e, "Unable to connect to Azure Storage to configure data protection storage. Ensure that an application setting containing a valid Azure Storage ConnectionString or AzureClientName is available at `Modules:OrchardCore.DataProtection.Azure:ConnectionString`.");
                 throw;
             }
         }

src/OrchardCore.Modules/OrchardCore.DataProtection.Azure/OrchardCore.DataProtection.Azure.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <!-- NuGet properties-->
@@ -15,6 +15,7 @@
 
   <ItemGroup>
     <PackageReference Include="Azure.Extensions.AspNetCore.DataProtection.Blobs" />
+    <PackageReference Include="Microsoft.Extensions.Azure" />
   </ItemGroup>
 
   <ItemGroup>

src/OrchardCore.Modules/OrchardCore.DataProtection.Azure/Startup.cs

@@ -1,5 +1,6 @@
 using Azure.Storage.Blobs;
 using Microsoft.AspNetCore.DataProtection;
+using Microsoft.Extensions.Azure;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
@@ -34,6 +35,14 @@ public override void ConfigureServices(IServiceCollection services)
                 .PersistKeysToAzureBlobStorage(sp =>
                 {
                     var options = sp.GetRequiredService<BlobOptions>();
+
+                    if (!string.IsNullOrWhiteSpace(options.AzureClientName))
+                    {
+                        var azureClientFactory = sp.GetRequiredService<IAzureClientFactory<BlobServiceClient>>();
+
+                        return azureClientFactory.CreateClient(options.AzureClientName).GetBlobContainerClient(options.ContainerName).GetBlobClient(options.BlobName);
+                    }
+
                     return new BlobClient(
                         options.ConnectionString,
                         options.ContainerName,

src/OrchardCore.Modules/OrchardCore.Media.Azure/MediaBlobContainerTenantEvents.cs

@@ -1,12 +1,12 @@
 using System.Threading.Tasks;
 using Azure;
-using Azure.Storage.Blobs;
 using Azure.Storage.Blobs.Models;
 using Microsoft.Extensions.Localization;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
 using OrchardCore.Environment.Shell;
 using OrchardCore.Environment.Shell.Removing;
+using OrchardCore.FileStorage.AzureBlob;
 using OrchardCore.Modules;
 
 namespace OrchardCore.Media.Azure
@@ -16,27 +16,30 @@ public class MediaBlobContainerTenantEvents : ModularTenantEvents
         private readonly MediaBlobStorageOptions _options;
         private readonly ShellSettings _shellSettings;
         protected readonly IStringLocalizer S;
+        private readonly BlobContainerClientFactory _blobContainerClientFactory;
         private readonly ILogger _logger;
 
         public MediaBlobContainerTenantEvents(
             IOptions<MediaBlobStorageOptions> options,
             ShellSettings shellSettings,
             IStringLocalizer<MediaBlobContainerTenantEvents> localizer,
+            BlobContainerClientFactory blobContainerClientFactory,
             ILogger<MediaBlobContainerTenantEvents> logger
             )
         {
             _options = options.Value;
             _shellSettings = shellSettings;
             S = localizer;
+            _blobContainerClientFactory = blobContainerClientFactory;
             _logger = logger;
         }
 
         public override async Task ActivatingAsync()
         {
             // Only create container if options are valid.
             if (_shellSettings.IsUninitialized() ||
-                string.IsNullOrEmpty(_options.ConnectionString) ||
-                string.IsNullOrEmpty(_options.ContainerName) ||
+                (string.IsNullOrWhiteSpace(_options.ConnectionString) && string.IsNullOrWhiteSpace(_options.AzureClientName)) ||
+                string.IsNullOrWhiteSpace(_options.ContainerName) ||
                 !_options.CreateContainer
                 )
             {
@@ -47,7 +50,7 @@ public override async Task ActivatingAsync()
 
             try
             {
-                var _blobContainer = new BlobContainerClient(_options.ConnectionString, _options.ContainerName);
+                var _blobContainer = _blobContainerClientFactory.Create(_options);
                 var response = await _blobContainer.CreateIfNotExistsAsync(PublicAccessType.None);
 
                 _logger.LogDebug("Azure Media Storage container {ContainerName} created.", _options.ContainerName);
@@ -62,15 +65,15 @@ public override async Task RemovingAsync(ShellRemovingContext context)
         {
             // Only remove container if options are valid.
             if (!_options.RemoveContainer ||
-                string.IsNullOrEmpty(_options.ConnectionString) ||
-                string.IsNullOrEmpty(_options.ContainerName))
+                (string.IsNullOrWhiteSpace(_options.ConnectionString) && string.IsNullOrWhiteSpace(_options.AzureClientName)) ||
+                string.IsNullOrWhiteSpace(_options.ContainerName))
             {
                 return;
             }
 
             try
             {
-                var _blobContainer = new BlobContainerClient(_options.ConnectionString, _options.ContainerName);
+                var _blobContainer = _blobContainerClientFactory.Create(_options);
 
                 var response = await _blobContainer.DeleteIfExistsAsync();
                 if (!response.Value)

src/OrchardCore.Modules/OrchardCore.Media.Azure/MediaBlobStorageOptionsConfiguration.cs

@@ -37,6 +37,7 @@ public void Configure(MediaBlobStorageOptions options)
             options.ConnectionString = section.GetValue(nameof(options.ConnectionString), string.Empty);
             options.CreateContainer = section.GetValue(nameof(options.CreateContainer), true);
             options.RemoveContainer = section.GetValue(nameof(options.RemoveContainer), false);
+            options.AzureClientName = section.GetValue(nameof(options.AzureClientName), string.Empty);
 
             var templateOptions = new TemplateOptions();
             var templateContext = new TemplateContext(templateOptions);

src/OrchardCore.Modules/OrchardCore.Media.Azure/Startup.cs

@@ -40,12 +40,10 @@ public override void ConfigureServices(IServiceCollection services)
             services.AddScoped<INavigationProvider, AdminMenu>();
             services.AddTransient<IConfigureOptions<MediaBlobStorageOptions>, MediaBlobStorageOptionsConfiguration>();
 
-            // Only replace default implementation if options are valid.
-            var connectionString = _configuration[$"OrchardCore_Media_Azure:{nameof(MediaBlobStorageOptions.ConnectionString)}"];
-            var containerName = _configuration[$"OrchardCore_Media_Azure:{nameof(MediaBlobStorageOptions.ContainerName)}"];
-
-            if (CheckOptions(connectionString, containerName, _logger))
+            if (CheckOptions(_configuration, _logger))
             {
+                services.TryAddSingleton<BlobContainerClientFactory>();
+
                 // Register a media cache file provider.
                 services.AddSingleton<IMediaFileStoreCacheFileProvider>(serviceProvider =>
                 {
@@ -57,7 +55,6 @@ public override void ConfigureServices(IServiceCollection services)
                     }
 
                     var mediaOptions = serviceProvider.GetRequiredService<IOptions<MediaOptions>>().Value;
-                    var shellOptions = serviceProvider.GetRequiredService<IOptions<ShellOptions>>();
                     var shellSettings = serviceProvider.GetRequiredService<ShellSettings>();
                     var logger = serviceProvider.GetRequiredService<ILogger<DefaultMediaFileStoreCacheFileProvider>>();
 
@@ -91,9 +88,10 @@ public override void ConfigureServices(IServiceCollection services)
                     var contentTypeProvider = serviceProvider.GetRequiredService<IContentTypeProvider>();
                     var mediaEventHandlers = serviceProvider.GetServices<IMediaEventHandler>();
                     var mediaCreatingEventHandlers = serviceProvider.GetServices<IMediaCreatingEventHandler>();
+                    var blobContainerClientFactory = serviceProvider.GetRequiredService<BlobContainerClientFactory>();
                     var logger = serviceProvider.GetRequiredService<ILogger<DefaultMediaFileStore>>();
 
-                    var fileStore = new BlobFileStore(blobStorageOptions, clock, contentTypeProvider);
+                    var fileStore = new BlobFileStore(blobStorageOptions, blobContainerClientFactory, clock, contentTypeProvider);
                     var mediaUrlBase = "/" + fileStore.Combine(shellSettings.RequestUrlPrefix, mediaOptions.AssetsRequestPath);
 
                     var originalPathBase = serviceProvider.GetRequiredService<IHttpContextAccessor>().HttpContext
@@ -117,13 +115,18 @@ public override void ConfigureServices(IServiceCollection services)
         private static string GetMediaCachePath(IWebHostEnvironment hostingEnvironment, ShellSettings shellSettings, string assetsPath)
             => PathExtensions.Combine(hostingEnvironment.WebRootPath, shellSettings.Name, assetsPath);
 
-        private static bool CheckOptions(string connectionString, string containerName, ILogger logger)
+        private static bool CheckOptions(IShellConfiguration configuration, ILogger logger)
         {
             var optionsAreValid = true;
 
-            if (string.IsNullOrWhiteSpace(connectionString))
+            // Only replace default implementation if options are valid.
+            var connectionString = configuration[$"OrchardCore_Media_Azure:{nameof(MediaBlobStorageOptions.ConnectionString)}"];
+            var containerName = configuration[$"OrchardCore_Media_Azure:{nameof(MediaBlobStorageOptions.ContainerName)}"];
+            var azureClientName = configuration[$"OrchardCore_Media_Azure:{nameof(MediaBlobStorageOptions.AzureClientName)}"];
+
+            if (string.IsNullOrWhiteSpace(azureClientName) && string.IsNullOrWhiteSpace(connectionString))
             {
-                logger.LogError("Azure Media Storage is enabled but not active because the 'ConnectionString' is missing or empty in application configuration.");
+                logger.LogError("Azure Media Storage is enabled but not active because either 'ConnectionString' or 'AzureClientName' must be set in application configuration.");
                 optionsAreValid = false;
             }
 

src/OrchardCore/OrchardCore.FileStorage.AzureBlob/BlobContainerClientFactory.cs

@@ -0,0 +1,26 @@
+using Azure.Storage.Blobs;
+using Microsoft.Extensions.Azure;
+
+namespace OrchardCore.FileStorage.AzureBlob;
+
+public class BlobContainerClientFactory
+{
+    private readonly IAzureClientFactory<BlobServiceClient> _azureClientFactory;
+
+    public BlobContainerClientFactory(IAzureClientFactory<BlobServiceClient> azureClientFactory)
+    {
+        _azureClientFactory = azureClientFactory;
+    }
+
+    public BlobContainerClient Create(BlobStorageOptions options)
+    {
+        if (!string.IsNullOrWhiteSpace(options.AzureClientName))
+        {
+            return _azureClientFactory.CreateClient(options.AzureClientName).GetBlobContainerClient(options.ContainerName);
+        }
+        else
+        {
+            return new BlobContainerClient(options.ConnectionString, options.ContainerName);
+        }
+    }
+}

src/OrchardCore/OrchardCore.FileStorage.AzureBlob/BlobFileStore.cs

@@ -2,7 +2,6 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Net;
-using System.Text;
 using System.Threading.Tasks;
 using Azure;
 using Azure.Storage.Blobs;
@@ -46,13 +45,12 @@ public class BlobFileStore : IFileStore
         private readonly IContentTypeProvider _contentTypeProvider;
         private readonly string _basePrefix = null;
 
-        public BlobFileStore(BlobStorageOptions options, IClock clock, IContentTypeProvider contentTypeProvider)
+        public BlobFileStore(BlobStorageOptions options, BlobContainerClientFactory blobContainerClientFactory, IClock clock, IContentTypeProvider contentTypeProvider)
         {
             _options = options;
             _clock = clock;
             _contentTypeProvider = contentTypeProvider;
-
-            _blobContainer = new BlobContainerClient(_options.ConnectionString, _options.ContainerName);
+            _blobContainer = blobContainerClientFactory.Create(_options);
 
             if (!string.IsNullOrEmpty(_options.BasePath))
             {

src/OrchardCore/OrchardCore.FileStorage.AzureBlob/BlobStorageOptions.cs

@@ -16,5 +16,11 @@ public abstract class BlobStorageOptions
         /// The base directory path to use inside the container for this stores contents.
         /// </summary>
         public string BasePath { get; set; }
+
+        /// <summary>
+        /// The Azure Client name. Must be configured by AddAzureClients on Startup.
+        /// https://learn.microsoft.com/en-us/dotnet/azure/sdk/dependency-injection?tabs=web-app-builder#configure-multiple-service-clients-with-different-names
+        /// </summary>
+        public string AzureClientName { get; set; }
     }
 }

src/OrchardCore/OrchardCore.FileStorage.AzureBlob/OrchardCore.FileStorage.AzureBlob.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
 
@@ -16,6 +16,7 @@
 
   <ItemGroup>
     <PackageReference Include="Azure.Storage.Blobs" />
+    <PackageReference Include="Microsoft.Extensions.Azure" />
   </ItemGroup>
 
   <ItemGroup>

src/OrchardCore/OrchardCore.Shells.Azure/Extensions/BlobShellsOrchardCoreBuilderExtensions.cs

@@ -23,6 +23,7 @@ public static OrchardCoreBuilder AddAzureShellsConfiguration(this OrchardCoreBui
             var services = builder.ApplicationServices;
 
             services.TryAddSingleton<IContentTypeProvider, FileExtensionContentTypeProvider>();
+            services.TryAddSingleton<BlobContainerClientFactory>();
 
             services.AddSingleton<IShellsFileStore>(sp =>
             {
@@ -34,8 +35,9 @@ public static OrchardCoreBuilder AddAzureShellsConfiguration(this OrchardCoreBui
 
                 var clock = sp.GetRequiredService<IClock>();
                 var contentTypeProvider = sp.GetRequiredService<IContentTypeProvider>();
+                var blobContainerClientFactory = sp.GetRequiredService<BlobContainerClientFactory>();
 
-                var fileStore = new BlobFileStore(blobOptions, clock, contentTypeProvider);
+                var fileStore = new BlobFileStore(blobOptions, blobContainerClientFactory, clock, contentTypeProvider);
 
                 return new BlobShellsFileStore(fileStore);
             });