Warm up local ssd of standby node

eloq_data_store_service/CMakeLists.txt

@@ -399,6 +399,11 @@ elseif (WITH_DATA_STORE STREQUAL "ELOQDSS_ELOQSTORE")
     )
 endif ()
 
+if (WITH_DATA_STORE STREQUAL "ELOQDSS_ROCKSDB_CLOUD_S3")
+    SET(RESELOQ_SOURCES ${RESELOQ_SOURCES}
+        s3_file_downloader.cpp
+    )
+endif()
 
 
 include_directories(

eloq_data_store_service/data_store_factory.h

@@ -39,6 +39,54 @@ class DataStoreFactory
         uint32_t shard_id,
         DataStoreService *data_store_service,
         bool start_db = true) = 0;
+
+    /**
+     * @brief Get storage path for the data store
+     * @return Storage path string, empty if not applicable
+     */
+    virtual std::string GetStoragePath() const = 0;
+
+    /**
+     * @brief Get S3 bucket name (with prefix) for constructing S3 URLs
+     * @return S3 bucket name with prefix, empty if not applicable
+     */
+    virtual std::string GetS3BucketName() const = 0;
+
+    /**
+     * @brief Get S3 object path for constructing S3 URLs
+     * @return S3 object path, empty if not applicable
+     */
+    virtual std::string GetS3ObjectPath() const = 0;
+
+    /**
+     * @brief Get S3 region
+     * @return S3 region, empty if not applicable
+     */
+    virtual std::string GetS3Region() const = 0;
+
+    /**
+     * @brief Get S3 endpoint URL (for custom endpoints like MinIO)
+     * @return S3 endpoint URL, empty if using default AWS endpoint
+     */
+    virtual std::string GetS3EndpointUrl() const = 0;
+
+    /**
+     * @brief Get AWS access key ID for S3 authentication
+     * @return AWS access key ID, empty if not applicable or using default credentials
+     */
+    virtual std::string GetAwsAccessKeyId() const = 0;
+
+    /**
+     * @brief Get AWS secret key for S3 authentication
+     * @return AWS secret key, empty if not applicable or using default credentials
+     */
+    virtual std::string GetAwsSecretKey() const = 0;
+
+    /**
+     * @brief Get SST file cache size limit in bytes
+     * @return Cache size limit in bytes, 0 if not applicable
+     */
+    virtual uint64_t GetSstFileCacheSize() const = 0;
 };
 
 }  // namespace EloqDS