yunohost/data/helpers.d/logrotate
2020-04-21 14:48:52 +02:00

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#!/bin/bash
# Use logrotate to manage the logfile
#
# usage: ynh_use_logrotate [--logfile=/log/file] [--nonappend] [--specific_user=user/group]
# | arg: -l, --logfile= - absolute path of logfile
# | arg: -n, --nonappend - (optional) Replace the config file instead of appending this new config.
# | 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/${app} will be used as default.
# logfile can be just a directory, or a full path to a logfile :
# /parentdir/logdir
# /parentdir/logdir/logfile.log
#
# It's possible to use this helper multiple times, each config will be added to
# the same logrotate config file. Unless you use the option --non-append
#
# Requires YunoHost version 2.6.4 or higher.
# Requires YunoHost version 3.2.0 or higher for the argument --specific_user
ynh_use_logrotate () {
# Declare an array to define the options of this helper.
local legacy_args=lnuya
local -A args_array=( [l]=logfile= [n]=nonappend [u]=specific_user= [y]=non [a]=append )
# [y]=non [a]=append are only for legacy purpose, to not fail on the old option '--non-append'
local logfile
local nonappend
local specific_user
# Manage arguments with getopts
ynh_handle_getopts_args "$@"
logfile="${logfile:-}"
nonappend="${nonappend:-0}"
specific_user="${specific_user:-}"
# LEGACY CODE - PRE GETOPTS
if [ $# -gt 0 ] && [ "$1" == "--non-append" ]
then
nonappend=1
# Destroy this argument for the next command.
shift
elif [ $# -gt 1 ] && [ "$2" == "--non-append" ]
then
nonappend=1
fi
if [ $# -gt 0 ] && [ "$(echo ${1:0:1})" != "-" ]
then
# If the given logfile parameter already exists as a file, or if it ends up with ".log",
# we just want to manage a single file
if [ -f "$1" ] || [ "$(echo ${1##*.})" == "log" ]
then
local logfile=$1
# Otherwise we assume we want to manage a directory and all its .log file inside
else
local logfile=$1/*.log
fi
fi
# LEGACY CODE
local customtee="tee --append"
if [ "$nonappend" -eq 1 ]; then
customtee="tee"
fi
if [ -n "$logfile" ]
then
if [ ! -f "$1" ] && [ "$(echo ${logfile##*.})" != "log" ]; then # Keep only the extension to check if it's a logfile
local logfile="$logfile/*.log" # Else, uses the directory and all logfile into it.
fi
else
logfile="/var/log/${app}/*.log" # Without argument, use a defaut directory in /var/log
fi
local su_directive=""
if [[ -n $specific_user ]]
then
su_directive=" # Run logorotate as specific user - group
su ${specific_user%/*} ${specific_user#*/}"
fi
cat > ./${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
mkdir --parents $(dirname "$logfile") # Create the log directory, if not exist
cat ${app}-logrotate | $customtee /etc/logrotate.d/$app > /dev/null # Append this config to the existing config file, or replace the whole config file (depending on $customtee)
}
# Remove the app's logrotate config.
#
# usage: ynh_remove_logrotate
#
# Requires YunoHost version 2.6.4 or higher.
ynh_remove_logrotate () {
if [ -e "/etc/logrotate.d/$app" ]; then
rm "/etc/logrotate.d/$app"
fi
}