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horde_ynh/scripts/experimental_helper.sh
2018-08-03 09:14:12 +02:00

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# Delete a file checksum from the app settings
#
# $app should be defined when calling this helper
#
# usage: ynh_remove_file_checksum file
# | arg: file - The file for which the checksum will be deleted
ynh_delete_file_checksum () {
local checksum_setting_name=checksum_${1//[\/ ]/_} # Replace all '/' and ' ' by '_'
ynh_app_setting_delete $app $checksum_setting_name
}
# Use logrotate to manage the logfile
#
# usage: ynh_use_logrotate [logfile] [--non-append|--append] [specific_user/specific_group]
# | arg: logfile - absolute path of logfile
# | arg: --non-append - (Option) Replace the config file instead of appending this new config.
# | arg: specific_user : run logrotate as the specified user and group. If not specified logrotate is runned as root.
#
# If no argument provided, a standard directory will be use. /var/log/${app}
# You can provide a path with the directory only or with the logfile.
# /parentdir/logdir
# /parentdir/logdir/logfile.log
#
# It's possible to use this helper several times, each config will be added to the same logrotate config file.
# Unless you use the option --non-append
ynh_use_logrotate () {
local customtee="tee -a"
local user_group="${3:-}"
if [ $# -gt 0 ] && [ "$1" == "--non-append" ]; then
customtee="tee"
# Destroy this argument for the next command.
shift
elif [ $# -gt 1 ] && [ "$2" == "--non-append" ]; then
customtee="tee"
fi
if [ $# -gt 0 ]; then
if [ "$(echo ${1##*.})" == "log" ]; then # Keep only the extension to check if it's a logfile
local logfile=$1 # In this case, focus logrotate on the logfile
else
local logfile=$1/*.log # Else, uses the directory and all logfile into it.
fi
else
local logfile="/var/log/${app}/*.log" # Without argument, use a defaut directory in /var/log
fi
local su_directive=""
if [[ -n $user_group ]]; then
su_directive=" # Run logorotate as specific user - group
su ${user_group%/*} ${user_group#*/}"
fi
cat > ./${app}-logrotate << EOF # Build a config file for logrotate
$logfile {
# Rotate if the logfile exceeds 100Mo
size 100M
# Keep 12 old log maximum
rotate 12
# Compress the logs with gzip
compress
# Compress the log at the next cycle. So keep always 2 non compressed logs
delaycompress
# Copy and truncate the log to allow to continue write on it. Instead of move the log.
copytruncate
# Do not do an error if the log is missing
missingok
# Not rotate if the log is empty
notifempty
# Keep old logs in the same dir
noolddir
$su_directive
}
EOF
sudo mkdir -p $(dirname "$logfile") # Create the log directory, if not exist
cat ${app}-logrotate | sudo $customtee /etc/logrotate.d/$app > /dev/null # Append this config to the existing config file, or replace the whole config file (depending on $customtee)
}