Implemented RemoteLocalizationContributor to get localization texts from a remote service.

framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo.Abp.AspNetCore.Mvc.Client.csproj

@@ -17,6 +17,7 @@
     <ProjectReference Include="..\Volo.Abp.AspNetCore.Mvc.Contracts\Volo.Abp.AspNetCore.Mvc.Contracts.csproj" />
     <ProjectReference Include="..\Volo.Abp.Caching\Volo.Abp.Caching.csproj" />
     <ProjectReference Include="..\Volo.Abp.Http.Client\Volo.Abp.Http.Client.csproj" />
+    <ProjectReference Include="..\Volo.Abp.Localization\Volo.Abp.Localization.csproj" />
   </ItemGroup>
 
 </Project>

framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/AbpAspNetCoreMvcClientModule.cs

@@ -1,6 +1,7 @@
 using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.Caching;
 using Volo.Abp.Http.Client;
+using Volo.Abp.Localization;
 using Volo.Abp.Modularity;
 
 namespace Volo.Abp.AspNetCore.Mvc.Client
@@ -8,7 +9,8 @@ namespace Volo.Abp.AspNetCore.Mvc.Client
     [DependsOn(
         typeof(AbpHttpClientModule),
         typeof(AbpAspNetCoreMvcContractsModule),
-        typeof(AbpCachingModule)
+        typeof(AbpCachingModule),
+        typeof(AbpLocalizationModule)
         )]
     public class AbpAspNetCoreMvcClientModule : AbpModule
     {
@@ -21,6 +23,11 @@ namespace Volo.Abp.AspNetCore.Mvc.Client
                 RemoteServiceName,
                 asDefaultServices: false
             );
+
+            Configure<AbpLocalizationOptions>(options =>
+            {
+                options.GlobalContributors.Add<RemoteLocalizationContributor>();
+            });
         }
     }
 }

framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/CachedApplicationConfigurationClient.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Globalization;
 using Microsoft.AspNetCore.Http;
 using System.Threading.Tasks;
 using Microsoft.Extensions.Caching.Distributed;
@@ -45,7 +46,7 @@ namespace Volo.Abp.AspNetCore.Mvc.Client
                 async () => await Proxy.Service.GetAsync(),
                 () => new DistributedCacheEntryOptions
                 {
-                    AbsoluteExpirationRelativeToNow = TimeSpan.FromSeconds(30) //TODO: Should be configurable. Default value should be higher (5 mins would be good).
+                    AbsoluteExpirationRelativeToNow = TimeSpan.FromSeconds(60) //TODO: Should be configurable. Default value should be higher (5 mins would be good).
                 }
             );
 
@@ -59,7 +60,7 @@ namespace Volo.Abp.AspNetCore.Mvc.Client
 
         protected virtual string CreateCacheKey()
         {
-            return $"ApplicationConfiguration_{CurrentUser.Id?.ToString("N") ?? "Anonymous"}";
+            return $"ApplicationConfiguration_{CurrentUser.Id?.ToString("N") ?? "Anonymous"}_{CultureInfo.CurrentUICulture.Name}";
         }
     }
 }

framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/CachedApplicationConfigurationClientExtensions.cs

@@ -0,0 +1,13 @@
+using Volo.Abp.AspNetCore.Mvc.ApplicationConfigurations;
+using Volo.Abp.Threading;
+
+namespace Volo.Abp.AspNetCore.Mvc.Client
+{
+    public static class CachedApplicationConfigurationClientExtensions
+    {
+        public static ApplicationConfigurationDto Get(this ICachedApplicationConfigurationClient client)
+        {
+            return AsyncHelper.RunSync(client.GetAsync);
+        }
+    }
+}

framework/src/Volo.Abp.AspNetCore.Mvc.Client/Volo/Abp/AspNetCore/Mvc/Client/RemoteLocalizationContributor.cs

@@ -0,0 +1,70 @@
+using System.Collections.Generic;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Localization;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Logging.Abstractions;
+using Volo.Abp.Localization;
+
+namespace Volo.Abp.AspNetCore.Mvc.Client
+{
+    public class RemoteLocalizationContributor : ILocalizationResourceContributor
+    {
+        private LocalizationResource _resource;
+        private ICachedApplicationConfigurationClient _applicationConfigurationClient;
+        private ILogger<RemoteLocalizationContributor> _logger;
+
+        public void Initialize(LocalizationResourceInitializationContext context)
+        {
+            _resource = context.Resource;
+            _applicationConfigurationClient = context.ServiceProvider.GetRequiredService<ICachedApplicationConfigurationClient>();
+            _logger = context.ServiceProvider.GetService<ILogger<RemoteLocalizationContributor>>()
+                      ?? NullLogger<RemoteLocalizationContributor>.Instance;
+        }
+
+        public LocalizedString GetOrNull(string cultureName, string name)
+        {
+            var resource = GetResourceOrNull();
+            if (resource == null)
+            {
+                return null;
+            }
+
+            var value = resource.GetOrDefault(name);
+            if (value == null)
+            {
+                return null;
+            }
+
+            return new LocalizedString(name, value);
+        }
+
+        public void Fill(string cultureName, Dictionary<string, LocalizedString> dictionary)
+        {
+            var resource = GetResourceOrNull();
+            if (resource == null)
+            {
+                return;
+            }
+
+            foreach (var keyValue in resource)
+            {
+                dictionary[keyValue.Key] = new LocalizedString(keyValue.Key, keyValue.Value);
+            }
+        }
+
+        private Dictionary<string, string> GetResourceOrNull()
+        {
+            var resource =  _applicationConfigurationClient
+                .Get()
+                .Localization.Values
+                .GetOrDefault(_resource.ResourceName);
+
+            if (resource == null)
+            {
+                _logger.LogWarning($"Could not find the localization resource {_resource.ResourceName} on the remote server!");
+            }
+
+            return resource;
+        }
+    }
+}