添加缓存

CMakeLists.txt

@@ -54,6 +54,7 @@ add_executable(seadisk src/main.cpp
         src/seafile/fs/winfsp_adapter.cpp
         include/seafile/fs/winfsp_adapter.hpp
         src/util/string_util.cpp
+        include/seafile/cache/cache.hpp
 )
 
 target_compile_definitions(seadisk PRIVATE

include/seafile/cache/cache.hpp

@@ -0,0 +1,112 @@
+//
+// Created by Shell on 2026/7/13.
+//
+
+#ifndef SEADISK_CACHE_HPP
+#define SEADISK_CACHE_HPP
+#include <chrono>
+#include <shared_mutex>
+#include <unordered_map>
+
+namespace seafile::cache {
+    template<typename K, typename V>
+    class Cache final{
+    public:
+        using Clock = std::chrono::steady_clock;
+        using Duration = Clock::duration;
+
+        /// 设置缓存
+        /// @param key 键
+        /// @param value 值
+        /// @param ttl 超时时间
+        void put(const K &key, V value, const Duration ttl) {
+            std::unique_lock lock(mutex_);
+
+            cache_[key] = Entry{
+                std::move(value),
+                Clock::now() + ttl
+            };
+        }
+
+        /// 获取缓存值
+        /// @param key 键
+        /// @return 缓存值
+        std::optional<V> get(const K &key) {
+            // 第一阶段：读锁
+            {
+                std::shared_lock lock(mutex_);
+
+                auto it = cache_.find(key);
+                if (it == cache_.end())
+                    return std::nullopt;
+
+                if (Clock::now() < it->second.expire_time)
+                    return it->second.value;
+            }
+
+            // 第二阶段：删除过期数据
+            {
+                std::unique_lock lock(mutex_);
+
+                auto it = cache_.find(key);
+                if (it != cache_.end() &&
+                    Clock::now() >= it->second.expire_time)
+                {
+                    cache_.erase(it);
+                }
+            }
+
+            return std::nullopt;
+        }
+
+        /// 移除缓存
+        /// @param key 键
+        void remove(const K &key) {
+            std::unique_lock lock(mutex_);
+            cache_.erase(key);
+        }
+
+        ///清空缓存
+        void clear() {
+            std::unique_lock lock(mutex_);
+            cache_.clear();
+        }
+
+        ///清理过时的缓存
+        void cleanup() {
+            auto now = Clock::now();
+
+            std::unique_lock lock(mutex_);
+
+            for (auto it = cache_.begin(); it != cache_.end();)
+            {
+                if (it->second.expireTime <= now)
+                {
+                    it = cache_.erase(it);
+                }
+                else
+                {
+                    ++it;
+                }
+            }
+        }
+
+        ///缓存大小
+        size_t size() const {
+            std::unique_lock lock(mutex_);
+            return cache_.size();
+        }
+
+    private:
+        struct  Entry final {
+            V value;
+            Clock::time_point expire_time;
+        };
+
+        mutable std::shared_mutex mutex_;
+
+        std::unordered_map<K, Entry> cache_;
+    };
+}
+
+#endif //SEADISK_CACHE_HPP

include/seafile/fs/seafile_file_system.hpp

@@ -9,6 +9,7 @@
 
 #include "../api/seafile_api.hpp"
 #include "../api/token_type.hpp"
+#include "seafile/cache/cache.hpp"
 
 namespace seafile::fs
 {
@@ -19,6 +20,8 @@ namespace seafile::fs
         TokenType token_type = TokenType::TOKEN;
         SeaFileApi api;
         std::wstring volume_label;
+        cache::Cache<std::string,std::vector<RepoEntry>> repo_dir_cache{};
+
 
     public:
         explicit SeafileFileSystem(const std::string& server,

src/seafile/fs/seafile_file_system.cpp

@@ -3,6 +3,7 @@
 #include "seafile/fs/file_context.hpp"
 #include "util/string_util.hpp"
 #include <spdlog/spdlog.h>
+#include <format>
 
 namespace seafile::fs {
     namespace {
@@ -26,7 +27,8 @@ namespace seafile::fs {
             return (static_cast<int64_t>(ft.dwHighDateTime) << 32) | ft.dwLowDateTime;
         }
 
-        void SetFileInfo(FSP_FSCTL_FILE_INFO *FileInfo, const uint32_t attributes, const uint64_t size,const int64_t mtime) {
+        void SetFileInfo(FSP_FSCTL_FILE_INFO *FileInfo, const uint32_t attributes, const uint64_t size,
+                         const int64_t mtime) {
             FileInfo->FileAttributes = attributes;
             FileInfo->AllocationSize = size;
             FileInfo->FileSize = size;
@@ -156,7 +158,7 @@ namespace seafile::fs {
             const auto copy_len = (std::min)(data.size(), static_cast<size_t>(Length));
             memcpy(Buffer, data.data(), copy_len);
             *PBytesTransferred = static_cast<ULONG>(copy_len);
-            spdlog::info(std::format("read file {} bytes offset {} length {} success", fc->path,Offset, Length));
+            spdlog::info(std::format("read file {} bytes offset {} length {} success", fc->path, Offset, Length));
             return STATUS_SUCCESS;
         }
         return STATUS_UNSUCCESSFUL;
@@ -166,11 +168,19 @@ namespace seafile::fs {
                                               PVOID Buffer, ULONG BufferLength, PULONG PBytesTransferred) {
         const auto fc = static_cast<SeaFileContext *>(FileContext);
         *PBytesTransferred = 0;
-        const auto path = std::ranges::replace(fc->path, '\\', '/');
-        const auto entries_result = api.repoDir(fc->repo_id, fc->path, token, token_type);
+        const auto cache_key = std::format("{}_{}", fc->repo_id, fc->path);
+        auto repo_entries = repo_dir_cache.get(cache_key);
+        if (!repo_entries.has_value()) {
+            if (auto entries_result = api.repoDir(fc->repo_id, fc->path, token, token_type); entries_result.has_value()) {
+                repo_entries = entries_result.value();
+                repo_dir_cache.put(cache_key, repo_entries.value(),std::chrono::seconds(60));
+            }else {
+                spdlog::error(std::format("can't read directory {},due to  {}", fc->path,entries_result.error().what()));
+            }
+        }
 
-        if (entries_result.has_value()) {
-            const auto &entries = entries_result.value();
+        if (repo_entries.has_value()) {
+            const auto &entries = repo_entries.value();
             size_t start = 0;
             if (Marker) {
                 const auto marker = shell::util::StringUtil::utf16le_to_utf8(Marker);
@@ -208,7 +218,6 @@ namespace seafile::fs {
             return STATUS_SUCCESS;
         }
 
-        std::cout << entries_result.error().what() << std::endl;
         return STATUS_UNSUCCESSFUL;
     }