iox-eclipse-iceoryx#1755 Add a log backend for the platform to the ho…

…ofs logger

iceoryx_hoofs/CMakeLists.txt

@@ -114,6 +114,7 @@ iox_add_library(
         reporting/source/hoofs_error_reporting.cpp
         reporting/source/console_logger.cpp
         reporting/source/logger.cpp
+        reporting/source/logging.cpp
         time/source/duration.cpp
         utility/source/unique_id.cpp
 

iceoryx_hoofs/reporting/include/iox/detail/log/building_blocks/logger.inl

@@ -111,6 +111,7 @@ inline void Logger<BaseLogger>::initLoggerInternal(const LogLevel logLevel) noex
     {
         BaseLogger::setLogLevel(logLevel);
         BaseLogger::initLogger(logLevel);
+        iox_platform_set_log_backend(&platform_log_backend);
         m_isFinalized.store(true, std::memory_order_relaxed);
     }
     else

iceoryx_hoofs/reporting/include/iox/log/building_blocks/logger.hpp

@@ -18,6 +18,7 @@
 #ifndef IOX_HOOFS_REPORTING_LOG_BUILDING_BLOCKS_LOGGER_HPP
 #define IOX_HOOFS_REPORTING_LOG_BUILDING_BLOCKS_LOGGER_HPP
 
+#include "iceoryx_platform/logging.hpp"
 #include "iox/iceoryx_hoofs_types.hpp"
 
 #include <atomic>
@@ -52,6 +53,12 @@ LogLevel logLevelFromEnvOr(const LogLevel logLevel) noexcept;
 
 namespace internal
 {
+/// @brief The backend for the platform logging frontend
+/// @copydoc IceoryxPlatformLogBackend
+/// @note Needs to be implemented in 'logging.cpp' in order to use the high level log API
+void platform_log_backend(
+    const char* file, int line, const char* function, IceoryxPlatformLogLevel log_level, const char* msg);
+
 /// @brief This class acts as common interface for the Logger. It provides the common functionality and inherits from
 /// the BaseLogger which is provided as template parameter. Please have a look at the design document for more details.
 /// @tparam[in] BaseLogger is the actual implementation

iceoryx_hoofs/reporting/source/logging.cpp

@@ -0,0 +1,55 @@
+// Copyright (c) 2024 by Mathias Kraus <[email protected]>. All rights reserved.
+//
+// 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.
+//
+// SPDX-License-Identifier: Apache-2.0
+
+#include "iox/logging.hpp"
+
+namespace iox::log::internal
+{
+// NOLINTJUSTIFICATION Not used directly but as a function pointer to set the backend
+// NOLINTNEXTLINE(readability-function-size)
+void platform_log_backend(
+    const char* file, int line, const char* function, IceoryxPlatformLogLevel log_level, const char* msg)
+{
+    auto level = LogLevel::TRACE;
+    switch (log_level)
+    {
+    case IceoryxPlatformLogLevel::IOX_PLATFORM_LOG_LEVEL_OFF:
+        level = LogLevel::OFF;
+        break;
+    case IceoryxPlatformLogLevel::IOX_PLATFORM_LOG_LEVEL_FATAL:
+        level = LogLevel::FATAL;
+        break;
+    case IceoryxPlatformLogLevel::IOX_PLATFORM_LOG_LEVEL_ERROR:
+        level = LogLevel::ERROR;
+        break;
+    case IceoryxPlatformLogLevel::IOX_PLATFORM_LOG_LEVEL_WARN:
+        level = LogLevel::WARN;
+        break;
+    case IceoryxPlatformLogLevel::IOX_PLATFORM_LOG_LEVEL_INFO:
+        level = LogLevel::INFO;
+        break;
+    case IceoryxPlatformLogLevel::IOX_PLATFORM_LOG_LEVEL_DEBUG:
+        level = LogLevel::DEBUG;
+        break;
+    case IceoryxPlatformLogLevel::IOX_PLATFORM_LOG_LEVEL_TRACE:
+        level = LogLevel::TRACE;
+        break;
+    default:
+        level = LogLevel::TRACE;
+    }
+    IOX_LOG_INTERNAL(file, line, function, level, msg);
+}
+} // namespace iox::log::internal