Upgrade Openbravo+modules to use log4j2 Logger classes

migrate-to-log4j2.sh

#!/bin/bash

echo -e "Migrating java files to log4j 2.x API"
echo -e "====================================="

# Check if we are in Openbravo root
CHECKDIR=$(ls -1 | grep modules)
if [ "$CHECKDIR" != "modules" ]
then
        echo "This script should be executed inside Openbravo root directory"
        exit 1
fi

# Check if there's a Logger not using their own class name as the logger name
# but using a custom string instead:
# private static Logger log = Logger.getLogger("whatever");
#
function file_has_logger_with_custom_name {
	CUSTOM_LOGGER=$(grep "Logger\(Factory\)\?\.getLogger(\"[[:print:]]*\")" $1)

	if [[ -n $CUSTOM_LOGGER ]];
	then
		echo "custom"
	fi
}

# Replaces log4j 1.x imports with the 2.x packages
# Also updates the logger creation method and now uses LogManager.getLogger()
# No need of passing the class :)
#
function update_logger_creation_and_imports {
	sed -i -r -e 's/import org.apache.log4j.Logger;/import org.apache.logging.log4j.LogManager;\nimport org.apache.logging.log4j.Logger;/g'  $1
	sed -i -r -e 's/import org.slf4j.Logger;/import org.apache.logging.log4j.Logger;/g' $1
	sed -i -r -e 's/import org.slf4j.LoggerFactory;/import org.apache.logging.log4j.LogManager;/g' $1
	sed -i -r -e ':a;N;$!ba;s/Logger(Factory)?([\n\t ])*.getLogger\((this.getClass\(\)|[^)]+)\)/LogManager.getLogger\(\)/g' $1
}


function print_custom_logger_warning {
	echo -e "\n\033[0;33mWARNING:\033[0mThe following file has a custom named logger. Please upgrade it manually."
	echo -e "$1\n"
}

function print_warnings {
    if [[ $1 =~ "custom" ]]; then
        print_custom_logger_warning $2
    fi
}

# Find all .java files in source files, and if no custom logger name is used
# migrate automagically
#
EDITED_FILES=0
for f in src src-util src-core src-test src-trl src-wad modules
do
	echo -e "=== Looking for sources in $f ==="
	JAVA_FILES=$(find $f -iname *.java)
	for j in $JAVA_FILES
	do
	    WARNINGS=""
		WARNINGS+=$(file_has_logger_with_custom_name $j)
		if [[ -z $WARNINGS ]];
		then
			update_logger_creation_and_imports $j
			EDITED_FILES=$((EDITED_FILES+1))
		else
			print_warnings $WARNINGS $j
		fi
	done
done

echo -e "Edited $EDITED_FILES files. Done!"