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69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include <string>
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#include <optional>
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#include <memory>
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#include "knowhere/file_manager.h"
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namespace milvus::storage {
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class FileManagerImpl : public knowhere::FileManager {
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public:
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/**
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* @brief Load a file to the local disk, so we can use stl lib to operate it.
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*
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* @param filename
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* @return false if any error, or return true.
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*/
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virtual bool
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LoadFile(const std::string& filename) noexcept = 0;
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/**
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* @brief Add file to FileManager to manipulate it.
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*
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* @param filename
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* @return false if any error, or return true.
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*/
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virtual bool
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AddFile(const std::string& filename) noexcept = 0;
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/**
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* @brief Check if a file exists.
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*
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* @param filename
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* @return std::nullopt if any error, or return if the file exists.
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*/
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virtual std::optional<bool>
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IsExisted(const std::string& filename) noexcept = 0;
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/**
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* @brief Delete a file from FileManager.
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*
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* @param filename
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* @return false if any error, or return true.
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*/
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virtual bool
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RemoveFile(const std::string& filename) noexcept = 0;
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};
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using FileManagerImplPtr = std::shared_ptr<FileManagerImpl>;
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} // namespace milvus::storage
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