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/*-
* Public Domain 2014-present MongoDB, Inc.
* Public Domain 2008-2014 WiredTiger, Inc.
*
* This is free and unencumbered software released into the public domain.
*
* Anyone is free to copy, modify, publish, use, compile, sell, or
* distribute this software, either in source code form or as a compiled
* binary, for any purpose, commercial or non-commercial, and by any
* means.
*
* In jurisdictions that recognize copyright laws, the author or authors
* of this software dedicate any and all copyright interest in the
* software to the public domain. We make this dedication for the benefit
* of the public at large and to the detriment of our heirs and
* successors. We intend this dedication to be an overt act of
* relinquishment in perpetuity of all present and future rights to this
* software under copyright law.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#pragma once
#include "google/cloud/storage/client.h"
#include <iostream>
#include <string>
#include <vector>
// Mapping between Google Status codes and corresponding system error numbers to be used by the GCP
// connection methods to return system error numbers expected by the filesystem interface.
static const std::map<google::cloud::StatusCode, int32_t> toErrno = {
{google::cloud::StatusCode::kUnknown, EAGAIN},
{google::cloud::StatusCode::kInvalidArgument, EINVAL},
{google::cloud::StatusCode::kNotFound, ENOENT},
{google::cloud::StatusCode::kAlreadyExists, EBUSY},
{google::cloud::StatusCode::kPermissionDenied, EACCES}};
class gcp_connection {
public:
gcp_connection(const std::string &bucket_name, const std::string &prefix);
int list_objects(std::vector<std::string> &objects, bool list_single);
int put_object(const std::string &object_key, const std::string &file_path);
int delete_object(const std::string &object_key);
int object_exists(const std::string &object_key, bool &exists, size_t &object_size);
int read_object(const std::string &object_key, int64_t offset, size_t len, void *buf);
int handle_error(const google::cloud::Status status, const std::string &error_message) const;
~gcp_connection() = default;
private:
google::cloud::storage::Client _gcp_client;
const std::string _bucket_name;
const std::string _object_prefix;
};
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