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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.
*/
#ifndef S3LOGSYSTEM
#define S3LOGSYSTEM
#include <wiredtiger.h>
#include <wiredtiger_ext.h>
#include <aws/core/utils/logging/LogSystemInterface.h>
#include <aws/core/utils/logging/LogLevel.h>
#include <atomic>
// Mapping the desired WiredTiger extension verbosity level to a rough equivalent AWS
// SDK verbosity level.
static const std::map<int32_t, Aws::Utils::Logging::LogLevel> verbosityMapping = {
{WT_VERBOSE_ERROR, Aws::Utils::Logging::LogLevel::Fatal},
{WT_VERBOSE_WARNING, Aws::Utils::Logging::LogLevel::Error},
{WT_VERBOSE_WARNING, Aws::Utils::Logging::LogLevel::Warn},
{WT_VERBOSE_INFO, Aws::Utils::Logging::LogLevel::Info},
{WT_VERBOSE_DEBUG_1, Aws::Utils::Logging::LogLevel::Debug},
{WT_VERBOSE_DEBUG_2, Aws::Utils::Logging::LogLevel::Debug},
{WT_VERBOSE_DEBUG_3, Aws::Utils::Logging::LogLevel::Debug},
{WT_VERBOSE_DEBUG_4, Aws::Utils::Logging::LogLevel::Debug},
{WT_VERBOSE_DEBUG_5, Aws::Utils::Logging::LogLevel::Trace}};
// Provides the S3 Store with a logger implementation that redirects the generated logs to
// WiredTiger's logging streams. This class implements AWS's LogSystemInterface class, an interface
// for logging implementations. Functions are derived from the interface to incorporate the
// logging with WiredTiger's logging system.
class S3LogSystem : public Aws::Utils::Logging::LogSystemInterface {
public:
S3LogSystem(WT_EXTENSION_API *wtApi, uint32_t wtVerbosityLevel);
Aws::Utils::Logging::LogLevel
GetLogLevel(void) const override
{
return (_awsLogLevel);
}
void Log(
Aws::Utils::Logging::LogLevel logLevel, const char *tag, const char *format, ...) override;
void LogStream(Aws::Utils::Logging::LogLevel logLevel, const char *tag,
const Aws::OStringStream &messageStream) override;
// Sends error messages to WiredTiger's error level log stream.
void
LogErrorMessage(const std::string &message) const
{
LogVerboseMessage(WT_VERBOSE_ERROR, message);
}
// Sends error messages to WiredTiger's debug level log stream.
void
LogDebugMessage(const std::string &message) const
{
LogVerboseMessage(WT_VERBOSE_DEBUG_1, message);
}
// Sets the WiredTiger Extension's verbosity level and matches the AWS log levels
// to this.
void SetWtVerbosityLevel(int32_t wtVerbosityLevel);
// Inherited from AWS LogSystemInterface and is not used.
void
Flush() override final
{
}
private:
void LogAwsMessage(const char *tag, const std::string &message) const;
void LogVerboseMessage(int32_t verbosityLevel, const std::string &message) const;
std::atomic<Aws::Utils::Logging::LogLevel> _awsLogLevel;
WT_EXTENSION_API *_wtApi;
int32_t _wtVerbosityLevel;
};
#endif
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