yunohost/helpers/helpers.v1.d/logrotate

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#!/bin/bash
FIRST_CALL_TO_LOGROTATE="true"
# Use logrotate to manage the logfile
#
# usage: ynh_use_logrotate [--logfile=/log/file] [--specific_user=user/group]
# | arg: -l, --logfile= - absolute path of logfile
# | arg: -u, --specific_user= - run logrotate as the specified user and group. If not specified logrotate is runned as root.
#
# If no `--logfile` is provided, `/var/log/$app` will be used as default.
# `logfile` can point to a directory or a file.
#
# Requires YunoHost version 2.6.4 or higher.
ynh_use_logrotate() {
# Stupid patch to ignore legacy --non-append and --nonappend
# which was never properly understood and improperly used and kind of bullshit
local all_args=( ${@} )
for I in $(seq 0 $(($# - 1)))
do
if [[ "${all_args[$I]}" == "--non-append" ]] || [[ "${all_args[$I]}" == "--nonappend" ]]
then
unset all_args[$I]
fi
done
set -- "${all_args[@]}"
# Argument parsing
local legacy_args=lu
local -A args_array=([l]=logfile= [u]=specific_user=)
local logfile
local specific_user
ynh_handle_getopts_args "$@"
logfile="${logfile:-}"
specific_user="${specific_user:-}"
set -o noglob
if [[ -z "$logfile" ]]; then
logfile="/var/log/${app}/*.log"
elif [[ "${logfile##*.}" != "log" ]] && [[ "${logfile##*.}" != "txt" ]]; then
logfile="$logfile/*.log"
fi
set +o noglob
for stuff in $logfile
do
mkdir --parents $(dirname "$stuff")
done
local su_directive=""
if [[ -n "$specific_user" ]]; then
su_directive="su ${specific_user%/*} ${specific_user#*/}"
fi
local tempconf="$(mktemp)"
cat << EOF >$tempconf
$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 moving the log.
copytruncate
# Do not trigger an error if the log is missing
missingok
# Do not rotate if the log is empty
notifempty
# Keep old logs in the same dir
noolddir
$su_directive
}
EOF
if [[ "$FIRST_CALL_TO_LOGROTATE" == "true" ]]
then
cat $tempconf > /etc/logrotate.d/$app
else
cat $tempconf >> /etc/logrotate.d/$app
fi
FIRST_CALL_TO_LOGROTATE="false"
# Make sure permissions are correct (otherwise the config file could be ignored and the corresponding logs never rotated)
chmod 644 "/etc/logrotate.d/$app"
mkdir -p "/var/log/$app"
chmod 750 "/var/log/$app"
}
# Remove the app's logrotate config.
#
# usage: ynh_remove_logrotate
#
# Requires YunoHost version 2.6.4 or higher.
ynh_remove_logrotate() {
if [ -e "/etc/logrotate.d/$app" ]; then
rm "/etc/logrotate.d/$app"
fi
}