/usr/local/lib64/python3.6/site-packages/pyarrow/include/parquet/encryption
Edit: /usr/local/lib64/python3.6/site-packages/pyarrow/include/parquet/encryption/kms_client.h (3174B)
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// 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
#include
#include
#include "arrow/util/mutex.h"
#include "parquet/exception.h"
#include "parquet/platform.h"
namespace parquet {
namespace encryption {
/// This class wraps the key access token of a KMS server. If your token changes over
/// time, you should keep the reference to the KeyAccessToken object and call Refresh()
/// method every time you have a new token.
class PARQUET_EXPORT KeyAccessToken {
public:
KeyAccessToken() = default;
explicit KeyAccessToken(const std::string value) : value_(value) {}
void Refresh(const std::string& new_value) {
auto lock = mutex_.Lock();
value_ = new_value;
}
const std::string& value() const {
auto lock = mutex_.Lock();
return value_;
}
private:
std::string value_;
mutable ::arrow::util::Mutex mutex_;
};
struct PARQUET_EXPORT KmsConnectionConfig {
std::string kms_instance_id;
std::string kms_instance_url;
/// If the access token is changed in the future, you should keep a reference to
/// this object and call Refresh() on it whenever there is a new access token.
std::shared_ptr refreshable_key_access_token;
std::unordered_map custom_kms_conf;
KmsConnectionConfig();
const std::string& key_access_token() const {
if (refreshable_key_access_token == NULL ||
refreshable_key_access_token->value().empty()) {
throw ParquetException("key access token is not set!");
}
return refreshable_key_access_token->value();
}
void SetDefaultIfEmpty();
};
class PARQUET_EXPORT KmsClient {
public:
static constexpr const char kKmsInstanceIdDefault[] = "DEFAULT";
static constexpr const char kKmsInstanceUrlDefault[] = "DEFAULT";
static constexpr const char kKeyAccessTokenDefault[] = "DEFAULT";
/// Wraps a key - encrypts it with the master key, encodes the result
/// and potentially adds a KMS-specific metadata.
virtual std::string WrapKey(const std::string& key_bytes,
const std::string& master_key_identifier) = 0;
/// Decrypts (unwraps) a key with the master key.
virtual std::string UnwrapKey(const std::string& wrapped_key,
const std::string& master_key_identifier) = 0;
virtual ~KmsClient() {}
};
} // namespace encryption
} // namespace parquet