resolves #4899: output cache for sitemap

Oqtane.Client/Extensions/OqtaneServiceCollectionExtensions.cs

@@ -53,6 +53,7 @@ namespace Microsoft.Extensions.DependencyInjection
             services.AddScoped<ISyncService, SyncService>();
             services.AddScoped<ILocalizationCookieService, LocalizationCookieService>();
             services.AddScoped<ICookieConsentService, CookieConsentService>();
+            services.AddScoped<ICacheService, CacheService>();
 
             // providers
             services.AddScoped<ITextEditor, Oqtane.Modules.Controls.QuillJSTextEditor>();

Oqtane.Client/Modules/Admin/Site/Index.razor

@@ -14,6 +14,7 @@
 @inject IStringLocalizer<Index> Localizer
 @inject INotificationService NotificationService
 @inject IStringLocalizer<SharedResources> SharedLocalizer
+@inject ICacheService CacheService
 
 @if (_initialized)
 {
@@ -50,11 +51,12 @@
                 </div>
             </div>
             <div class="row mb-1 align-items-center">
-                <Label Class="col-sm-3" For="sitemap" HelpText="The site map url for this site which can be submitted to search engines for indexing" ResourceKey="SiteMap">Site Map: </Label>
+                <Label Class="col-sm-3" For="sitemap" HelpText="The site map url for this site which can be submitted to search engines for indexing. The sitemap is cached for 5 minutes and the cache can be manually cleared." ResourceKey="SiteMap">Site Map: </Label>
                 <div class="col-sm-9">
                     <div class="input-group">
                         <input id="sitemap" class="form-control" @bind="@_sitemap" disabled />
                         <a href="@_sitemap" class="btn btn-secondary" target="_new">@Localizer["Browse"]</a>
+                        <button type="button" class="btn btn-danger" @onclick="EvictSitemapOutputCache">@Localizer["SiteMap.EvictCache"]</button>
                     </div>
                 </div>
             </div>
@@ -932,4 +934,9 @@
         _aliasname = "";
         StateHasChanged();
     }
+
+    private async Task EvictSitemapOutputCache() {
+        await CacheService.EvictOutputCacheByTag(Constants.SitemapOutputCacheTag);
+        AddModuleMessage(Localizer["Success.SiteMap.CacheEvicted"], MessageType.Success);
+    }
 }

Oqtane.Client/Resources/Modules/Admin/Site/Index.resx

@@ -349,7 +349,7 @@
     <value>Relay Configured?</value>
   </data>
   <data name="SiteMap.HelpText" xml:space="preserve">
-    <value>The site map url for this site which can be submitted to search engines for indexing</value>
+    <value>The site map url for this site which can be submitted to search engines for indexing. The sitemap is cached for 5 minutes and the cache can be manually cleared.</value>
   </data>
   <data name="SiteMap.Text" xml:space="preserve">
     <value>Site Map:</value>
@@ -441,4 +441,10 @@
   <data name="Theme.Heading" xml:space="preserve">
     <value>Theme</value>
   </data>
+  <data name="SiteMap.EvictCache" xml:space="preserve">
+    <value>Clear Cache</value>
+  </data>
+  <data name="Success.SiteMap.CacheEvicted" xml:space="preserve">
+    <value>SiteMap Output Cache Evicted</value>
+  </data>
 </root>

Oqtane.Client/Services/CacheService.cs

@@ -0,0 +1,23 @@
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+
+using Oqtane.Documentation;
+using Oqtane.Shared;
+
+namespace Oqtane.Services
+{
+    /// <inheritdoc cref="ICacheService" />
+    [PrivateApi("Don't show in the documentation, as everything should use the Interface")]
+    public class CacheService : ServiceBase, ICacheService
+    {
+        public CacheService(HttpClient http, SiteState siteState) : base(http, siteState) { }
+
+        private string ApiUrl => CreateApiUrl("Cache");
+
+        public async Task EvictOutputCacheByTag(string tag, CancellationToken cancellationToken = default)
+        {
+            await DeleteAsync($"{ApiUrl}/outputCache/evictByTag/{tag}");
+        }
+    }
+}

Oqtane.Client/Services/Interfaces/ICacheService.cs

@@ -0,0 +1,18 @@
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Oqtane.Services
+{
+    /// <summary>
+    /// Service to manage cache
+    /// </summary>
+    public interface ICacheService
+    {
+        /// <summary>
+        /// Evicts the output cache for a specific tag
+        /// </summary>
+        /// <param name="tag"></param>
+        /// <returns></returns>
+        Task EvictOutputCacheByTag(string tag, CancellationToken cancellationToken = default);
+    }
+}

Oqtane.Server/Controllers/CacheController.cs

@@ -0,0 +1,31 @@
+using System.Threading;
+using System.Threading.Tasks;
+
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+
+using Oqtane.Models;
+using Oqtane.Services;
+using Oqtane.Shared;
+
+namespace Oqtane.Controllers
+{
+    [Route(ControllerRoutes.ApiRoute)]
+    public class CacheController : Controller
+    {
+        private readonly ICacheService _cacheService;
+
+        public CacheController(ICacheService cacheService)
+        {
+            _cacheService = cacheService;
+        }
+
+        // DELETE api/<controller>/outputCache/evictByTag/{tag}
+        [HttpDelete("outputCache/evictByTag/{tag}")]
+        [Authorize(Roles = RoleNames.Admin)]
+        public async Task EvictOutputCacheByTag(string tag, CancellationToken cancellationToken = default)
+        {
+            await _cacheService.EvictOutputCacheByTag(tag, cancellationToken);
+        }
+    }
+}

Oqtane.Server/Extensions/OqtaneServiceCollectionExtensions.cs

@@ -117,6 +117,7 @@ namespace Microsoft.Extensions.DependencyInjection
             // services
             services.AddTransient<ISiteService, ServerSiteService>();
             services.AddTransient<ILocalizationCookieService, ServerLocalizationCookieService>();
+            services.AddTransient<ICacheService, ServerCacheService>();
 
             // repositories
             services.AddTransient<IModuleDefinitionRepository, ModuleDefinitionRepository>();

Oqtane.Server/Pages/Sitemap.cshtml.cs

@@ -7,6 +7,7 @@ using System.Xml;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.RazorPages;
+using Microsoft.AspNetCore.OutputCaching;
 using Microsoft.Extensions.DependencyInjection;
 using Oqtane.Enums;
 using Oqtane.Infrastructure;
@@ -19,6 +20,7 @@ using Oqtane.Shared;
 namespace Oqtane.Pages
 {
     [AllowAnonymous]
+    [OutputCache(Duration = 300, Tags = [Constants.SitemapOutputCacheTag])]
     public class SitemapModel : PageModel
     {
         private readonly IServiceProvider _serviceProvider;

Oqtane.Server/Services/CacheService.cs

@@ -0,0 +1,41 @@
+using System.Threading;
+using System.Threading.Tasks;
+
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.OutputCaching;
+
+using Oqtane.Documentation;
+using Oqtane.Enums;
+using Oqtane.Infrastructure;
+using Oqtane.Shared;
+
+namespace Oqtane.Services
+{
+    [PrivateApi("Don't show in the documentation, as everything should use the Interface")]
+    public class ServerCacheService : ICacheService
+    {
+        private readonly IOutputCacheStore _outputCacheStore;
+        private readonly ILogManager _logger;
+        private readonly IHttpContextAccessor _accessor;
+
+        public ServerCacheService(IOutputCacheStore outputCacheStore, ILogManager logger, IHttpContextAccessor accessor)
+        {
+            _outputCacheStore = outputCacheStore;
+            _logger = logger;
+            _accessor = accessor;
+        }
+
+        public async Task EvictOutputCacheByTag(string tag, CancellationToken cancellationToken = default)
+        {
+            if (_accessor.HttpContext.User.IsInRole(RoleNames.Admin))
+            {
+                await _outputCacheStore.EvictByTagAsync(tag, cancellationToken);
+                _logger.Log(LogLevel.Information, this, LogFunction.Other, "Evicted Output Cache for Tag {Tag}", tag);
+            }
+            else
+            {
+                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized Output Cache Eviction for {Tag}", tag);
+            }
+        }
+    }
+}

Oqtane.Server/Startup.cs

@@ -142,6 +142,8 @@ namespace Oqtane
                     });
             });
 
+            services.AddOutputCache();
+
             services.AddMvc(options =>
             {
                 options.Filters.Add(new AutoValidateAntiforgeryTokenAttribute());
@@ -222,6 +224,7 @@ namespace Oqtane
             app.UseJwtAuthorization();
             app.UseRouting();
             app.UseCors();
+            app.UseOutputCache();
             app.UseAuthentication();
             app.UseAuthorization();
             app.UseAntiforgery();

Oqtane.Shared/Shared/Constants.cs

@@ -94,6 +94,8 @@ namespace Oqtane.Shared
         public const string CookieConsentCookieName = "Oqtane.CookieConsent";
         public const string CookieConsentCookieValue = "yes";
         public const string CookieConsentActionCookieValue = "yes";
+
+        public const string SitemapOutputCacheTag = "Sitemap";
         // Obsolete constants
 
         const string RoleObsoleteMessage = "Use the corresponding member from Oqtane.Shared.RoleNames";