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/*
* Copyright 2017 Google
*
* Licensed 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.
*/
#ifndef FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_UTIL_LOG_H_
#define FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_UTIL_LOG_H_
#include <string>
#include "Firestore/core/src/firebase/firestore/util/string_format.h"
namespace firebase {
namespace firestore {
namespace util {
// Levels used when logging messages.
enum LogLevel {
// Debug Log Level
kLogLevelDebug,
// Warning Log Level
kLogLevelWarning,
};
// Log a message if kLogLevelDebug is enabled. Arguments are not evaluated if
// logging is disabled.
//
// @param format A format string suitable for use with `util::StringFormat`
// @param ... C++ variadic arguments that match the format string. Not C
// varargs.
#define LOG_DEBUG(...) \
do { \
namespace _util = firebase::firestore::util; \
if (_util::LogIsLoggable(_util::kLogLevelDebug)) { \
std::string _message = _util::StringFormat(__VA_ARGS__); \
_util::LogMessage(_util::kLogLevelDebug, _message); \
} \
} while (0)
// Log a message if kLogLevelWarn is enabled (it is by default). Arguments are
// not evaluated if logging is disabled.
//
// @param format A format string suitable for use with `util::StringFormat`
// @param ... C++ variadic arguments that match the format string. Not C
// varargs.
#define LOG_WARN(...) \
do { \
namespace _util = firebase::firestore::util; \
if (_util::LogIsLoggable(_util::kLogLevelWarning)) { \
std::string _message = _util::StringFormat(__VA_ARGS__); \
_util::LogMessage(_util::kLogLevelWarning, _message); \
} \
} while (0)
// Tests to see if the given log level is loggable.
bool LogIsLoggable(LogLevel level);
// Is debug logging enabled?
inline bool LogIsDebugEnabled() {
return LogIsLoggable(kLogLevelDebug);
}
// All messages at or above the specified log level value are displayed.
void LogSetLevel(LogLevel level);
// Log a message at the given level.
void LogMessage(LogLevel log_level, const std::string& message);
} // namespace util
} // namespace firestore
} // namespace firebase
#endif // FIRESTORE_CORE_SRC_FIREBASE_FIRESTORE_UTIL_LOG_H_
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