Blogging: Cache invalidation

modules/blogging/src/Volo.Blogging.Admin.Application.Contracts/Volo/Blogging/Admin/Blogs/IBlogManagementAppService.cs

@@ -18,5 +18,7 @@ namespace Volo.Blogging.Admin.Blogs
         Task<BlogDto> UpdateAsync(Guid id, UpdateBlogDto input);
 
         Task DeleteAsync(Guid id);
+
+        Task ClearCacheAsync(Guid id);
     }
 }

modules/blogging/src/Volo.Blogging.Admin.Application/Volo/Blogging/Admin/Blogs/BlogManagementAppService.cs

@@ -3,18 +3,22 @@ using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using Volo.Abp.Application.Dtos;
+using Volo.Abp.Caching;
 using Volo.Blogging.Blogs;
 using Volo.Blogging.Blogs.Dtos;
+using Volo.Blogging.Posts;
 
 namespace Volo.Blogging.Admin.Blogs
 {
     public class BlogManagementAppService : BloggingAdminAppServiceBase, IBlogManagementAppService
     {
         private readonly IBlogRepository _blogRepository;
-
-        public BlogManagementAppService(IBlogRepository blogRepository)
+        private readonly IDistributedCache<List<PostCacheItem>> _postsCache;
+        
+        public BlogManagementAppService(IBlogRepository blogRepository, IDistributedCache<List<PostCacheItem>> postsCache)
         {
             _blogRepository = blogRepository;
+            _postsCache = postsCache;
         }
 
         public async Task<ListResultDto<BlogDto>> GetListAsync()
@@ -63,5 +67,11 @@ namespace Volo.Blogging.Admin.Blogs
         {
             await _blogRepository.DeleteAsync(id);
         }
+
+        [Authorize(BloggingPermissions.Blogs.ClearCache)]
+        public async Task ClearCacheAsync(Guid id)
+        {
+            await _postsCache.RemoveAsync(id.ToString());
+        }
     }
 }

modules/blogging/src/Volo.Blogging.Admin.HttpApi/Volo/Blogging/Admin/BlogManagementController.cs

@@ -54,5 +54,12 @@ namespace Volo.Blogging.Admin
         {
             await _blogManagementAppService.DeleteAsync(id);
         }
+
+        [HttpGet]
+        [Route("clear-cache/{id}")]
+        public async Task ClearCacheAsync(Guid id)
+        {
+            await _blogManagementAppService.ClearCacheAsync(id);
+        }
     }
 }

modules/blogging/src/Volo.Blogging.Admin.Web/Pages/Blogging/Admin/Blogs/index.js

@@ -52,6 +52,22 @@
                                         });
                                 },
                             },
+                            {
+                                text: l("ClearCache"),
+                                visible: abp.auth.isGranted(
+                                  'Blogging.Blog.ClearCache'  
+                                ),
+                                confirmMessage: function (data) {
+                                    return l("ClearCacheConfirmationMessage");
+                                },
+                                action: function (data) {
+                                    volo.blogging.admin.blogManagement
+                                        .clearCache(data.record.id)
+                                        .then(function () {
+                                            _dataTable.ajax.reload();
+                                        })
+                                }
+                            }
                         ],
                     },
                 },

modules/blogging/src/Volo.Blogging.Application.Contracts.Shared/Volo/Blogging/BloggingPermissionDefinitionProvider.cs

@@ -15,6 +15,7 @@ namespace Volo.Blogging
             blogs.AddChild(BloggingPermissions.Blogs.Update, L("Permission:Edit"));
             blogs.AddChild(BloggingPermissions.Blogs.Delete, L("Permission:Delete"));
             blogs.AddChild(BloggingPermissions.Blogs.Create, L("Permission:Create"));
+            blogs.AddChild(BloggingPermissions.Blogs.ClearCache, L("Permission:ClearCache"));
 
             var posts = bloggingGroup.AddPermission(BloggingPermissions.Posts.Default, L("Permission:Posts"));
             posts.AddChild(BloggingPermissions.Posts.Update, L("Permission:Edit"));

modules/blogging/src/Volo.Blogging.Application.Contracts.Shared/Volo/Blogging/BloggingPermissions.cs

@@ -13,6 +13,7 @@ namespace Volo.Blogging
             public const string Delete = Default + ".Delete";
             public const string Update = Default + ".Update";
             public const string Create = Default + ".Create";
+            public const string ClearCache = Default + ".ClearCache";
         }
 
         public static class Posts

modules/blogging/src/Volo.Blogging.Application/Volo/Blogging/BloggingApplicationAutoMapperProfile.cs

@@ -20,6 +20,16 @@ namespace Volo.Blogging
             CreateMap<Post, PostWithDetailsDto>().Ignore(x=>x.Writer).Ignore(x=>x.CommentCount).Ignore(x=>x.Tags);
             CreateMap<Comment, CommentWithDetailsDto>().Ignore(x => x.Writer);
             CreateMap<Tag, TagDto>();
+            CreateMap<Post, PostCacheItem>().Ignore(x=>x.Writer).Ignore(x=>x.CommentCount).Ignore(x=>x.Tags);
+            CreateMap<PostCacheItem, PostWithDetailsDto>()
+                .Ignore(x=>x.LastModificationTime)
+                .Ignore(x=>x.LastModifierId)
+                .Ignore(x=>x.DeleterId)
+                .Ignore(x=>x.IsDeleted)
+                .Ignore(x=>x.DeletionTime)
+                .Ignore(x=>x.CommentCount)
+                .Ignore(x=>x.Tags);
+
         }
     }
 }

modules/blogging/src/Volo.Blogging.Application/Volo/Blogging/Posts/PostAppService.cs

@@ -20,9 +20,15 @@ namespace Volo.Blogging.Posts
         private readonly IPostRepository _postRepository;
         private readonly ITagRepository _tagRepository;
         private readonly ICommentRepository _commentRepository;
-        private readonly IDistributedCache<ListResultDto<PostWithDetailsDto>> _postsCache;
-
-        public PostAppService(IPostRepository postRepository, ITagRepository tagRepository, ICommentRepository commentRepository, IBlogUserLookupService userLookupService, IDistributedCache<ListResultDto<PostWithDetailsDto>> postsCache)
+        private readonly IDistributedCache<List<PostCacheItem>> _postsCache;
+
+        public PostAppService(
+            IPostRepository postRepository,
+            ITagRepository tagRepository,
+            ICommentRepository commentRepository,
+            IBlogUserLookupService userLookupService,
+            IDistributedCache<List<PostCacheItem>> postsCache
+        )
         {
             UserLookupService = userLookupService;
             _postRepository = postRepository;
@@ -33,21 +39,47 @@ namespace Volo.Blogging.Posts
         
         public async Task<ListResultDto<PostWithDetailsDto>> GetListByBlogIdAndTagName(Guid id, string tagName)
         {
-            var cacheKey = id.ToString() + "-" + tagName;
+            var posts = await _postRepository.GetPostsByBlogId(id);
+            var tag = tagName.IsNullOrWhiteSpace() ? null : await _tagRepository.FindByNameAsync(id, tagName);
+            var userDictionary = new Dictionary<Guid, BlogUserDto>();
+            var postDtos = new List<PostWithDetailsDto>(ObjectMapper.Map<List<Post>, List<PostWithDetailsDto>>(posts));
             
-            return await _postsCache.GetOrAddAsync(
-                cacheKey,
-                async () => await GetPostsByBlogIdAndTagName(id, tagName),
-                () => new DistributedCacheEntryOptions
+            foreach (var postDto in postDtos)
+            {
+                postDto.Tags = await GetTagsOfPost(postDto.Id);
+            }
+            
+            if (tag != null)
+            {
+                postDtos = await FilterPostsByTag(postDtos, tag);
+            }
+            
+            foreach (var postDto in postDtos)
+            {
+                if (postDto.CreatorId.HasValue)
                 {
-                    AbsoluteExpiration = DateTimeOffset.Now.AddHours(6)
+                    if (!userDictionary.ContainsKey(postDto.CreatorId.Value))
+                    {
+                        var creatorUser = await UserLookupService.FindByIdAsync(postDto.CreatorId.Value);
+                        if (creatorUser != null)
+                        {
+                            userDictionary[creatorUser.Id] = ObjectMapper.Map<BlogUser, BlogUserDto>(creatorUser);
+                        }
+                    }
+            
+                    if (userDictionary.ContainsKey(postDto.CreatorId.Value))
+                    {
+                        postDto.Writer = userDictionary[(Guid)postDto.CreatorId];
+                    }
                 }
-            );
+            }
+            
+            return new ListResultDto<PostWithDetailsDto>(postDtos);
         }
         
         public async Task<ListResultDto<PostWithDetailsDto>> GetTimeOrderedListAsync(Guid blogId)
         {
-            return await _postsCache.GetOrAddAsync(
+            var postCacheItems = await _postsCache.GetOrAddAsync(
                 blogId.ToString(),
                 async () => await GetTimeOrderedPostsAsync(blogId),
                 () => new DistributedCacheEntryOptions
@@ -55,6 +87,22 @@ namespace Volo.Blogging.Posts
                     AbsoluteExpiration = DateTimeOffset.Now.AddHours(6)
                 }
             );
+
+            var postsWithDetails = ObjectMapper.Map<List<PostCacheItem>, List<PostWithDetailsDto>>(postCacheItems);
+            
+            foreach (var post in postsWithDetails)
+            {
+                if (post.CreatorId.HasValue)
+                {
+                    var creatorUser = await UserLookupService.FindByIdAsync(post.CreatorId.Value);
+                    if (creatorUser != null)
+                    {
+                        post.Writer = ObjectMapper.Map<BlogUser, BlogUserDto>(creatorUser);
+                    }
+                }
+            }
+            
+            return new ListResultDto<PostWithDetailsDto>(postsWithDetails);
         }
 
         public async Task<PostWithDetailsDto> GetForReadingAsync(GetPostInput input)
@@ -157,62 +205,13 @@ namespace Volo.Blogging.Posts
             return ObjectMapper.Map<Post, PostWithDetailsDto>(post);
         }
 
-        private async Task<ListResultDto<PostWithDetailsDto>> GetPostsByBlogIdAndTagName(Guid id, string tagName)
-        {
-            var posts = await _postRepository.GetPostsByBlogId(id);
-            var tag = tagName.IsNullOrWhiteSpace() ? null : await _tagRepository.FindByNameAsync(id, tagName);
-            var userDictionary = new Dictionary<Guid, BlogUserDto>();
-            var postDtos = new List<PostWithDetailsDto>(ObjectMapper.Map<List<Post>, List<PostWithDetailsDto>>(posts));
-
-            foreach (var postDto in postDtos)
-            {
-                postDto.Tags = await GetTagsOfPost(postDto.Id);
-            }
-
-            if (tag != null)
-            {
-                postDtos = await FilterPostsByTag(postDtos, tag);
-            }
-
-            foreach (var postDto in postDtos)
-            {
-                if (postDto.CreatorId.HasValue)
-                {
-                    if (!userDictionary.ContainsKey(postDto.CreatorId.Value))
-                    {
-                        var creatorUser = await UserLookupService.FindByIdAsync(postDto.CreatorId.Value);
-                        if (creatorUser != null)
-                        {
-                            userDictionary[creatorUser.Id] = ObjectMapper.Map<BlogUser, BlogUserDto>(creatorUser);
-                        }
-                    }
-
-                    if (userDictionary.ContainsKey(postDto.CreatorId.Value))
-                    {
-                        postDto.Writer = userDictionary[(Guid)postDto.CreatorId];
-                    }
-                }
-            }
-
-            return new ListResultDto<PostWithDetailsDto>(postDtos);
-        }
-        
-        private async Task<ListResultDto<PostWithDetailsDto>> GetTimeOrderedPostsAsync(Guid blogId)
+        private async Task<List<PostCacheItem>> GetTimeOrderedPostsAsync(Guid blogId)
         {
             var posts = await _postRepository.GetOrderedList(blogId);
 
-            var postDtos = new List<PostWithDetailsDto>(ObjectMapper.Map<List<Post>, List<PostWithDetailsDto>>(posts));
+            var postCacheItems = ObjectMapper.Map<List<Post>, List<PostCacheItem>>(posts);
 
-            foreach (var postDto in postDtos)
-            {
-                var creatorUser = await UserLookupService.FindByIdAsync(postDto.CreatorId.Value);
-                if (creatorUser != null)
-                {
-                    postDto.Writer = ObjectMapper.Map<BlogUser, BlogUserDto>(creatorUser);
-                }
-            }
-
-            return new ListResultDto<PostWithDetailsDto>(postDtos);
+            return postCacheItems;
         }
         
         private async Task<string> RenameUrlIfItAlreadyExistAsync(Guid blogId, string url, Post existingPost = null)

modules/blogging/src/Volo.Blogging.Domain.Shared/Volo/Blogging/Localization/Resources/en.json

@@ -12,6 +12,7 @@
     "Permission:Posts": "Posts",
     "Permission:Tags": "Tags",
     "Permission:Comments": "Comments",
+    "Permission:ClearCache": "Clear cache",
     "Title": "Title",
     "Delete": "Delete",
     "Reply": "Reply",
@@ -53,6 +54,8 @@
     "Blogs": "Blogs",
     "Tags": "Tags",
     "ShareOn": "Share on",
-    "TitleLengthWarning": "Keep your title size under 60 characters to be SEO friendly!"
+    "TitleLengthWarning": "Keep your title size under 60 characters to be SEO friendly!",
+    "ClearCache": "Clear cache",
+    "ClearCacheConfirmationMessage": "Are you sure you want to clear the cache?"
   }
 }

modules/blogging/src/Volo.Blogging.Domain.Shared/Volo/Blogging/Localization/Resources/tr.json

@@ -12,6 +12,7 @@
     "Permission:Posts": "Yazılar",
     "Permission:Tags": "Etiketler",
     "Permission:Comments": "Yorumlar",
+    "Permission:ClearCache": "Önbelleği temizle",
     "Title": "Başlık",
     "Delete": "Sil",
     "Reply": "Yanıtla",
@@ -53,6 +54,8 @@
     "Blogs": "Bloglar",
     "Tags": "Etiketler",
     "ShareOn": "Paylaş",
-    "TitleLengthWarning": "Başlığınınz SEO dostu olabilmesi için 60 karakterden az olmasını sağlayın!"
+    "TitleLengthWarning": "Başlığınınz SEO dostu olabilmesi için 60 karakterden az olmasını sağlayın!",
+    "ClearCache": "Önbelleği temizle",
+    "ClearCacheConfirmationMessage": "Önbelleği temizlemek istediğinizden emin misiniz?"
   }
 }

modules/blogging/src/Volo.Blogging.Domain/Volo.Blogging.Domain.csproj

@@ -15,6 +15,7 @@
     <ProjectReference Include="..\..\..\users\src\Volo.Abp.Users.Domain\Volo.Abp.Users.Domain.csproj" />
     <ProjectReference Include="..\..\..\..\framework\src\Volo.Abp.AutoMapper\Volo.Abp.AutoMapper.csproj" />
     <ProjectReference Include="..\..\..\..\framework\src\Volo.Abp.Ddd.Domain\Volo.Abp.Ddd.Domain.csproj" />
+    <ProjectReference Include="..\..\..\..\framework\src\Volo.Abp.Caching\Volo.Abp.Caching.csproj" />
   </ItemGroup>
 
 </Project>

modules/blogging/src/Volo.Blogging.Domain/Volo/Blogging/BloggingDomainModule.cs

@@ -1,5 +1,6 @@
 using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.AutoMapper;
+using Volo.Abp.Caching;
 using Volo.Abp.Domain;
 using Volo.Abp.Domain.Entities.Events.Distributed;
 using Volo.Abp.Modularity;
@@ -13,7 +14,9 @@ namespace Volo.Blogging
     [DependsOn(
         typeof(BloggingDomainSharedModule),
         typeof(AbpDddDomainModule),
-        typeof(AbpAutoMapperModule))]
+        typeof(AbpAutoMapperModule),
+        typeof(AbpCachingModule)
+    )]
     public class BloggingDomainModule : AbpModule
     {
         public override void ConfigureServices(ServiceConfigurationContext context)

modules/blogging/src/Volo.Blogging.Domain/Volo/Blogging/Posts/PostCacheInvalidator.cs

@@ -0,0 +1,25 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Volo.Abp.Caching;
+using Volo.Abp.DependencyInjection;
+using Volo.Abp.Domain.Entities.Events;
+using Volo.Abp.EventBus;
+
+namespace Volo.Blogging.Posts
+{
+    public class PostCacheInvalidator : ILocalEventHandler<EntityChangedEventData<Post>>, ITransientDependency
+    {
+        protected IDistributedCache<List<PostCacheItem>> Cache { get; }
+
+        public PostCacheInvalidator(IDistributedCache<List<PostCacheItem>> cache)
+        {
+            Cache = cache;
+        }
+        
+        public virtual async Task HandleEventAsync(EntityChangedEventData<Post> eventData)
+        {
+            var cacheKey = eventData.Entity.BlogId.ToString();
+            await Cache.RemoveAsync(cacheKey);
+        }
+    }
+}

modules/blogging/src/Volo.Blogging.Domain/Volo/Blogging/Posts/PostCacheItem.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Collections.Generic;
+using JetBrains.Annotations;
+using Volo.Abp.Auditing;
+using Volo.Abp.Domain.Entities;
+using Volo.Blogging.Tagging;
+using Volo.Blogging.Users;
+
+namespace Volo.Blogging.Posts
+{
+    [Serializable]
+    public class PostCacheItem
+    {
+        public Guid Id { get; set; }
+        public Guid BlogId { get; set; }
+
+        public string Title { get; set; }
+
+        public string CoverImage { get; set; }
+
+        public string Url { get; set; }
+
+        public string Content { get; set; }
+
+        public string Description { get; set; }
+
+        public int ReadCount { get; set; }
+
+        public int CommentCount { get; set; }
+
+        [CanBeNull]
+        public BlogUser Writer { get; set; }
+
+        public List<Tag> Tags { get; set; }
+        public Guid? CreatorId { get; set; }
+        
+        public DateTime CreationTime { get; set; }
+    }
+}