logging_stack.h

Go to the documentation of this file.

/*
 * AWS IoT Device SDK for Embedded C V202009.00
 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * 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 OR
 * COPYRIGHT HOLDERS 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 LOGGING_STACK_H_
#define LOGGING_STACK_H_
 
/* Include header for logging level macros. */
#include "logging_levels.h"
 
/* Standard Include. */
#include <stdio.h>
#include <stdint.h>
#include <string.h>
 
/* The macro definition for LIBRARY_LOG_NAME is for Doxygen
 * documentation only. This macro is typically defined in only the
 * <library>_config.h file or the demo_config.h file. */
 
#ifdef DOXYGEN
    #define LIBRARY_LOG_NAME    "<LIBRARY_NAME>"
#endif
 
/* Check if LIBRARY_LOG_NAME macro has been defined. */
#if !defined( LIBRARY_LOG_NAME )
    #error "Please define LIBRARY_LOG_NAME for the library."
#endif
 
#define FILENAME               ( strrchr( __FILE__, '/' ) ? strrchr( __FILE__, '/' ) + 1 : __FILE__ )
 
/* Metadata information to prepend to every log message. */
#define LOG_METADATA_FORMAT    "[%s] [%s:%d] "                      
#define LOG_METADATA_ARGS      LIBRARY_LOG_NAME, FILENAME, __LINE__ 
#if !defined( DISABLE_LOGGING )
 
    #define SdkLog( string )    printf string
#else
    #define SdkLog( string )
#endif
 
/* Check that LIBRARY_LOG_LEVEL is defined and has a valid value. */
#if !defined( LIBRARY_LOG_LEVEL ) ||       \
    ( ( LIBRARY_LOG_LEVEL != LOG_NONE ) && \
    ( LIBRARY_LOG_LEVEL != LOG_ERROR ) &&  \
    ( LIBRARY_LOG_LEVEL != LOG_WARN ) &&   \
    ( LIBRARY_LOG_LEVEL != LOG_INFO ) &&   \
    ( LIBRARY_LOG_LEVEL != LOG_DEBUG )     \
    )
    #error "Please define LIBRARY_LOG_LEVEL as either LOG_NONE, LOG_ERROR, LOG_WARN, LOG_INFO, or LOG_DEBUG."
#else
    #if LIBRARY_LOG_LEVEL == LOG_DEBUG
        /* All log level messages will logged. */
        #define LogError( message )    SdkLog( ( "[ERROR] "LOG_METADATA_FORMAT, LOG_METADATA_ARGS ) ); SdkLog( message ); SdkLog( ( "\r\n" ) )
        #define LogWarn( message )     SdkLog( ( "[WARN] "LOG_METADATA_FORMAT, LOG_METADATA_ARGS ) ); SdkLog( message ); SdkLog( ( "\r\n" ) )
        #define LogInfo( message )     SdkLog( ( "[INFO] "LOG_METADATA_FORMAT, LOG_METADATA_ARGS ) ); SdkLog( message ); SdkLog( ( "\r\n" ) )
        #define LogDebug( message )    SdkLog( ( "[DEBUG] "LOG_METADATA_FORMAT, LOG_METADATA_ARGS ) ); SdkLog( message ); SdkLog( ( "\r\n" ) )
 
    #elif LIBRARY_LOG_LEVEL == LOG_INFO
        /* Only INFO, WARNING and ERROR messages will be logged. */
        #define LogError( message )    SdkLog( ( "[ERROR] "LOG_METADATA_FORMAT, LOG_METADATA_ARGS ) ); SdkLog( message ); SdkLog( ( "\r\n" ) )
        #define LogWarn( message )     SdkLog( ( "[WARN] "LOG_METADATA_FORMAT, LOG_METADATA_ARGS ) ); SdkLog( message ); SdkLog( ( "\r\n" ) )
        #define LogInfo( message )     SdkLog( ( "[INFO] "LOG_METADATA_FORMAT, LOG_METADATA_ARGS ) ); SdkLog( message ); SdkLog( ( "\r\n" ) )
        #define LogDebug( message )
 
    #elif LIBRARY_LOG_LEVEL == LOG_WARN
        /* Only WARNING and ERROR messages will be logged.*/
        #define LogError( message )    SdkLog( ( "[ERROR] "LOG_METADATA_FORMAT, LOG_METADATA_ARGS ) ); SdkLog( message ); SdkLog( ( "\r\n" ) )
        #define LogWarn( message )     SdkLog( ( "[WARN] "LOG_METADATA_FORMAT, LOG_METADATA_ARGS ) ); SdkLog( message ); SdkLog( ( "\r\n" ) )
        #define LogInfo( message )
        #define LogDebug( message )
 
    #elif LIBRARY_LOG_LEVEL == LOG_ERROR
        /* Only ERROR messages will be logged. */
        #define LogError( message )    SdkLog( ( "[ERROR] "LOG_METADATA_FORMAT, LOG_METADATA_ARGS ) ); SdkLog( message ); SdkLog( ( "\r\n" ) )
        #define LogWarn( message )
        #define LogInfo( message )
        #define LogDebug( message )
 
    #else /* if LIBRARY_LOG_LEVEL == LOG_ERROR */
 
        #define LogError( message )
        #define LogWarn( message )
        #define LogInfo( message )
        #define LogDebug( message )
 
    #endif /* if LIBRARY_LOG_LEVEL == LOG_ERROR */
#endif /* if !defined( LIBRARY_LOG_LEVEL ) || ( ( LIBRARY_LOG_LEVEL != LOG_NONE ) && ( LIBRARY_LOG_LEVEL != LOG_ERROR ) && ( LIBRARY_LOG_LEVEL != LOG_WARN ) && ( LIBRARY_LOG_LEVEL != LOG_INFO ) && ( LIBRARY_LOG_LEVEL != LOG_DEBUG ) ) */
 
/* Doxygen documentation of logging interface macro definitions for Doxygen. */
#ifdef DOXYGEN
 
    #define LogDebug( message )    SdkLog( ( "[DEBUG] "LOG_METADATA_FORMAT, LOG_METADATA_ARGS ) ); SdkLog( message ); SdkLog( ( "\r\n" ) )
 
    #define LogInfo( message )     SdkLog( ( "[INFO] "LOG_METADATA_FORMAT, LOG_METADATA_ARGS ) ); SdkLog( message ); SdkLog( ( "\r\n" ) )
 
    #define LogWarn( message )     SdkLog( ( "[WARN] "LOG_METADATA_FORMAT, LOG_METADATA_ARGS ) ); SdkLog( message ); SdkLog( ( "\r\n" ) )
 
    #define LogError( message )    SdkLog( ( "[ERROR] "LOG_METADATA_FORMAT, LOG_METADATA_ARGS ) ); SdkLog( message ); SdkLog( ( "\r\n" ) )
 
#endif /* ifdef DOXYGEN */
 
#endif /* ifndef LOGGING_STACK_H_ */