53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
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/*
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* Project: HybridCache
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* Created Date: 24-3-25
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* Author: lshb
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*/
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#ifndef HYBRIDCACHE_ACCESSOR_H_
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#define HYBRIDCACHE_ACCESSOR_H_
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#include "read_cache.h"
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#include "write_cache.h"
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namespace HybridCache {
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class HybridCacheAccessor {
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public:
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HybridCacheAccessor(const HybridCacheConfig& cfg) : cfg_(cfg) {}
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~HybridCacheAccessor() {}
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// Put in write cache.
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// If the write cache is full, block waiting for asynchronous flush to release the write cache space
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virtual int Put(const std::string &key, size_t start, size_t len, const char* buf) = 0;
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// 1.Read from write cache. 2.Read from read cache.
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virtual int Get(const std::string &key, size_t start, size_t len, char* buf) = 0;
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// Get4ReadHandle();
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// File flush. Need to handle flush/write concurrency.
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virtual int Flush(const std::string &key) = 0;
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// Flush to the final data source, such as global cache to s3.
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virtual int DeepFlush(const std::string &key) = 0;
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virtual int Delete(const std::string &key) = 0;
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// Invalidated the local read cache.
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// Delete read cache when open the file. That is a configuration item.
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virtual int Invalidate(const std::string &key) = 0;
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// Background asynchronous flush all files and releases write cache space.
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virtual int FsSync() = 0;
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protected:
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HybridCacheConfig cfg_;
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std::shared_ptr<WriteCache> writeCache_;
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std::shared_ptr<ReadCache> readCache_;
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std::shared_ptr<DataAdaptor> dataAdaptor_;
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};
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} // namespace HybridCache
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#endif // HYBRIDCACHE_ACCESSOR_H_
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