Add a parameterless AddEnyimMemcached method

Author: cnblogs-dudu

Enyim.Caching/Configuration/MemcachedClientConfiguration.cs

@@ -6,6 +6,7 @@
 using Enyim.Caching.Memcached.Protocol.Binary;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
+using Microsoft.Extensions.Configuration;
 
 namespace Enyim.Caching.Configuration
 {
@@ -26,6 +27,7 @@ public class MemcachedClientConfiguration : IMemcachedClientConfiguration
         public MemcachedClientConfiguration(
             ILoggerFactory loggerFactory,
             IOptions<MemcachedClientOptions> optionsAccessor,
+            IConfiguration configuration,
             ITranscoder transcoder = null,
             IMemcachedKeyTransformer keyTransformer = null)
         {
@@ -37,6 +39,11 @@ public MemcachedClientConfiguration(
             _logger = loggerFactory.CreateLogger<MemcachedClientConfiguration>();
 
             var options = optionsAccessor.Value;
+            if(options == null || options.Servers.Count == 0)
+            {
+                configuration.GetSection("enyimMemcached").Bind(options);
+            }
+
             Servers = new List<EndPoint>();
             foreach (var server in options.Servers)
             {

Enyim.Caching/EnyimMemcachedServiceCollectionExtensions.cs

@@ -11,6 +11,17 @@ namespace Microsoft.Extensions.DependencyInjection
 {
     public static class EnyimMemcachedServiceCollectionExtensions
     {
+        /// <summary>
+        /// Add EnyimMemcached to the specified <see cref="IServiceCollection"/>.
+        /// Read configuration via IConfiguration.GetSection("enyimMemcached")
+        /// </summary>
+        /// <param name="services"></param>
+        /// <returns></returns>
+        public static IServiceCollection AddEnyimMemcached(this IServiceCollection services)
+        {
+            return AddEnyimMemcachedInternal(services, null);
+        }
+
         public static IServiceCollection AddEnyimMemcached(this IServiceCollection services, Action<MemcachedClientOptions> setupAction)
         {
             if (services == null)
@@ -23,7 +34,7 @@ public static IServiceCollection AddEnyimMemcached(this IServiceCollection servi
                 throw new ArgumentNullException(nameof(setupAction));
             }
 
-            return AddEnyimMemcached(services, s => s.Configure(setupAction));
+            return AddEnyimMemcachedInternal(services, s => s.Configure(setupAction));
         }
 
         public static IServiceCollection AddEnyimMemcached(this IServiceCollection services, IConfigurationSection configurationSection)
@@ -38,7 +49,7 @@ public static IServiceCollection AddEnyimMemcached(this IServiceCollection servi
                 throw new ArgumentNullException(nameof(configurationSection));
             }
 
-            return AddEnyimMemcached(services, s => s.Configure<MemcachedClientOptions>(configurationSection));
+            return AddEnyimMemcachedInternal(services, s => s.Configure<MemcachedClientOptions>(configurationSection));
         }
 
         public static IServiceCollection AddEnyimMemcached(this IServiceCollection services, IConfiguration configuration, string sectionKey = "enyimMemcached")
@@ -53,13 +64,13 @@ public static IServiceCollection AddEnyimMemcached(this IServiceCollection servi
                 throw new ArgumentNullException(nameof(configuration));
             }
 
-            return AddEnyimMemcached(services, s => s.Configure<MemcachedClientOptions>(configuration.GetSection(sectionKey)));
+            return AddEnyimMemcachedInternal(services, s => s.Configure<MemcachedClientOptions>(configuration.GetSection(sectionKey)));
         }
 
-        private static IServiceCollection AddEnyimMemcached(IServiceCollection services, Action<IServiceCollection> configure)
+        private static IServiceCollection AddEnyimMemcachedInternal(IServiceCollection services, Action<IServiceCollection> configure)
         {
             services.AddOptions();
-            configure(services);
+            configure?.Invoke(services);
 
             services.TryAddSingleton<ITranscoder, DefaultTranscoder>();
             services.TryAddSingleton<IMemcachedKeyTransformer, DefaultKeyTransformer>();

SampleWebApp/Startup.cs

@@ -32,7 +32,8 @@ public Startup(IHostingEnvironment env)
 
         public void ConfigureServices(IServiceCollection services)
         {
-            services.AddEnyimMemcached(Configuration);
+            services.AddEnyimMemcached();
+            //services.AddEnyimMemcached(Configuration);
             //services.AddEnyimMemcached(Configuration, "enyimMemcached");
             //services.AddEnyimMemcached(Configuration.GetSection("enyimMemcached"));
         }