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functionise log rotation and flushing code to avoid dupliation

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Signed-off-by: Adam Warner <me@adamwarner.co.uk>
This commit is contained in:
Adam Warner 2025-04-05 00:41:50 +01:00
parent f403468450
commit 6e06a93c31
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1 changed files with 43 additions and 78 deletions
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121
advanced/Scripts/piholeLogFlush.sh
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@ -40,6 +40,42 @@ if [ -z "$WEBFILE" ]; then
WEBFILE="/var/log/pihole/webserver.log"
fi
# Helper function to handle log rotation for a single file
rotate_log() {
# This function copies x.log over to x.log.1
# and then empties x.log
# Note that moving the file is not an option, as
# dnsmasq would happily continue writing into the
# moved file (it will have the same file handler)
local logfile="$1"
if [[ "$*" != *"quiet"* ]]; then
echo -ne " ${INFO} Rotating ${logfile} ..."
fi
cp -p "${logfile}" "${logfile}.1"
echo " " > "${logfile}"
chmod 640 "${logfile}"
if [[ "$*" != *"quiet"* ]]; then
echo -e "${OVER} ${TICK} Rotated ${logfile} ..."
fi
}
# Helper function to handle log flushing for a single file
flush_log() {
local logfile="$1"
if [[ "$*" != *"quiet"* ]]; then
echo -ne " ${INFO} Flushing ${logfile} ..."
fi
echo " " > "${logfile}"
chmod 640 "${logfile}"
if [ -f "${logfile}.1" ]; then
echo " " > "${logfile}.1"
chmod 640 "${logfile}.1"
fi
if [[ "$*" != *"quiet"* ]]; then
echo -e "${OVER} ${TICK} Flushed ${logfile} ..."
fi
}
if [[ "$*" == *"once"* ]]; then
# Nightly logrotation
if command -v /usr/sbin/logrotate >/dev/null; then
@ -50,87 +86,16 @@ if [[ "$*" == *"once"* ]]; then
fi
/usr/sbin/logrotate --force --state "${STATEFILE}" /etc/pihole/logrotate
else
# Copy pihole.log over to pihole.log.1
# and empty out pihole.log
# Note that moving the file is not an option, as
# dnsmasq would happily continue writing into the
# moved file (it will have the same file handler)
if [[ "$*" != *"quiet"* ]]; then
echo -ne " ${INFO} Rotating ${LOGFILE} ..."
fi
cp -p "${LOGFILE}" "${LOGFILE}.1"
echo " " > "${LOGFILE}"
chmod 640 "${LOGFILE}"
if [[ "$*" != *"quiet"* ]]; then
echo -e "${OVER} ${TICK} Rotated ${LOGFILE} ..."
fi
# Copy FTL.log over to FTL.log.1
# and empty out FTL.log
if [[ "$*" != *"quiet"* ]]; then
echo -ne " ${INFO} Rotating ${FTLFILE} ..."
fi
cp -p "${FTLFILE}" "${FTLFILE}.1"
echo " " > "${FTLFILE}"
chmod 640 "${FTLFILE}"
if [[ "$*" != *"quiet"* ]]; then
echo -e "${OVER} ${TICK} Rotated ${FTLFILE} ..."
fi
# Copy webserver.log over to webserver.log.1
# and empty out webserver.log
if [[ "$*" != *"quiet"* ]]; then
echo -ne " ${INFO} Rotating ${WEBFILE} ..."
fi
cp -p "${WEBFILE}" "${WEBFILE}.1"
echo " " > "${WEBFILE}"
chmod 640 "${WEBFILE}"
if [[ "$*" != *"quiet"* ]]; then
echo -e "${OVER} ${TICK} Rotated ${WEBFILE} ..."
fi
# Handle rotation for each log file
rotate_log "${LOGFILE}"
rotate_log "${FTLFILE}"
rotate_log "${WEBFILE}"
fi
else
# Manual flushing
# Flush both pihole.log and pihole.log.1 (if existing)
if [[ "$*" != *"quiet"* ]]; then
echo -ne " ${INFO} Flushing ${LOGFILE} ..."
fi
echo " " > "${LOGFILE}"
chmod 640 "${LOGFILE}"
if [ -f "${LOGFILE}.1" ]; then
echo " " > "${LOGFILE}.1"
chmod 640 "${LOGFILE}.1"
fi
if [[ "$*" != *"quiet"* ]]; then
echo -e "${OVER} ${TICK} Flushed ${LOGFILE} ..."
fi
# Flush both FTL.log and FTL.log.1 (if existing)
if [[ "$*" != *"quiet"* ]]; then
echo -ne " ${INFO} Flushing ${FTLFILE} ..."
fi
echo " " > "${FTLFILE}"
chmod 640 "${FTLFILE}"
if [ -f "${FTLFILE}.1" ]; then
echo " " > "${FTLFILE}.1"
chmod 640 "${FTLFILE}.1"
fi
if [[ "$*" != *"quiet"* ]]; then
echo -e "${OVER} ${TICK} Flushed ${FTLFILE} ..."
fi
# Flush both webserver.log and webserver.log.1 (if existing)
if [[ "$*" != *"quiet"* ]]; then
echo -ne " ${INFO} Flushing ${WEBFILE} ..."
fi
echo " " > "${WEBFILE}"
chmod 640 "${WEBFILE}"
if [ -f "${WEBFILE}.1" ]; then
echo " " > "${WEBFILE}.1"
chmod 640 "${WEBFILE}.1"
fi
if [[ "$*" != *"quiet"* ]]; then
echo -e "${OVER} ${TICK} Flushed ${WEBFILE} ..."
fi
flush_log "${LOGFILE}"
flush_log "${FTLFILE}"
flush_log "${WEBFILE}"
if [[ "$*" != *"quiet"* ]]; then
echo -ne " ${INFO} Flushing database, DNS resolution temporarily unavailable ..."