Added configuration sourcing through web.config

Author: cyberprune

src/UmbracoFileSystemProviders.Azure/AzureBlobFileSystem.cs

@@ -12,12 +12,32 @@ namespace Our.Umbraco.FileSystemProviders.Azure
     using System.IO;
 
     using global::Umbraco.Core.IO;
-
+    using System.Configuration;
     /// <summary>
     /// The azure file system.
     /// </summary>
     public class AzureBlobFileSystem : IFileSystem
     {
+        /// <summary>
+        /// The configuration key for disabling the virtual path provider.
+        /// </summary>
+        private const string ConnectionStringKey = Constants.Configuration.ConnectionStringKey;
+
+        /// <summary>
+        /// The configuration key for disabling the virtual path provider.
+        /// </summary>
+        private const string ContainerNameKey = Constants.Configuration.ContainerNameKey;
+
+        /// <summary>
+        /// The configuration key for disabling the virtual path provider.
+        /// </summary>
+        private const string RootUrlKey = Constants.Configuration.RootUrlKey;
+
+        /// <summary>
+        /// The configuration key for disabling the virtual path provider.
+        /// </summary>
+        private const string MaxDaysKey = Constants.Configuration.MaxDaysKey;
+
         /// <summary>
         /// Initializes a new instance of the <see cref="AzureBlobFileSystem"/> class.
         /// </summary>
@@ -41,6 +61,45 @@ public AzureBlobFileSystem(string containerName, string rootUrl, string connecti
             this.FileSystem = AzureFileSystem.GetInstance(containerName, rootUrl, connectionString, maxDays);
         }
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="AzureBlobFileSystem"/> class from values in web.config through ConfigurationManager.
+        /// </summary>
+        public AzureBlobFileSystem()
+        {
+
+            string connectionString = ConfigurationManager.AppSettings[ConnectionStringKey] as string;
+            if (!string.IsNullOrWhiteSpace(connectionString))
+            {
+                string rootUrl = ConfigurationManager.AppSettings[RootUrlKey] as string;
+                if (string.IsNullOrWhiteSpace(rootUrl))
+                {
+                    throw new InvalidOperationException("Azure Storage Root URL is not defined in web.config. The " + RootUrlKey + " property was not defined or is empty.");
+                }
+
+                string containerName = ConfigurationManager.AppSettings[ContainerNameKey] as string;
+
+                if (string.IsNullOrWhiteSpace(containerName))
+                {
+                    containerName = "media";
+                }
+
+                string maxDays = ConfigurationManager.AppSettings[MaxDaysKey] as string;
+
+                if (string.IsNullOrWhiteSpace(maxDays))
+                {
+                    maxDays = "365";
+                }
+
+                this.FileSystem = AzureFileSystem.GetInstance(containerName, rootUrl, connectionString, maxDays);
+            }
+            else
+            {
+                throw new InvalidOperationException("Unable to retreive the Azure Storage configuration from web.config. " + ConnectionStringKey + " was not defined or is empty.");
+            }
+
+
+        }
+
         /// <summary>
         /// Gets a singleton instance of the <see cref="AzureFileSystem"/> class.
         /// </summary>

src/UmbracoFileSystemProviders.Azure/Constants.cs

@@ -29,6 +29,26 @@ public static class Configuration
             /// The configuration key for enabling the storage emulator.
             /// </summary>
             public const string UseStorageEmulatorKey = "AzureBlobFileSystem.UseStorageEmulator";
+
+            /// <summary>
+            /// The configuration key for providing the connection string via the web.config
+            /// </summary>
+            public const string ConnectionStringKey = "AzureBlobFileSystem.ConnectionString";
+
+            /// <summary>
+            /// The configuration key for providing the Azure Blob Container Name via the web.config
+            /// </summary>
+            public const string ContainerNameKey = "AzureBlobFileSystem.ContainerName";
+
+            /// <summary>
+            /// The configuration key for providing the Storage Root URL via the web.config
+            /// </summary>
+            public const string RootUrlKey = "AzureBlobFileSystem.RootUrl";
+
+            /// <summary>
+            /// The configuration key for providing the Maximum Days Cache value via the web.config
+            /// </summary>
+            public const string MaxDaysKey = "AzureBlobFileSystem.MaxDays";
         }
     }
 }