CommonUtil.h

// Licensed to the Apache Software Foundation (ASF) under one
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// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

#pragma once

#include "utils/Status.h"

#include <time.h>
#include <string>

namespace milvus {
namespace server {

class CommonUtil {
 public:
    static bool
    GetSystemMemInfo(uint64_t& total_mem, uint64_t& free_mem);
    static bool
    GetSystemAvailableThreads(int64_t& thread_count);

    static bool
    IsFileExist(const std::string& path);
    static uint64_t
    GetFileSize(const std::string& path);
    static bool
    IsDirectoryExist(const std::string& path);
    static Status
    CreateDirectory(const std::string& path);
    static Status
    DeleteDirectory(const std::string& path);

    static std::string
    GetFileName(std::string filename);
    static std::string
    GetExePath();

    static bool
    TimeStrToTime(const std::string& time_str, time_t& time_integer, tm& time_struct,
                  const std::string& format = "%d-%d-%d %d:%d:%d");

    static void
    ConvertTime(time_t time_integer, tm& time_struct);
    static void
    ConvertTime(tm time_struct, time_t& time_integer);

    static void
    EraseFromCache(const std::string& item_key);
};

}  // namespace server
}  // namespace milvus