docker-pi-hole/src/s6/service

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#!/bin/bash
# This script patches all service commands into the appropriate s6- commands
# pi-hole upstream scripts need a 'service' interface. why not systemd? docker said so.
start() {
restart
}
stop() {
/command/s6-svc -wD -d -T2500 /run/service/"$service"
}
restart() {
local pid
# Get the PID(s) of the service we are asking to restart
mapfile -t pids < <(pgrep "$service")
# Only attempt to stop the service if it is already running
if [ "${#pids[@]}" -gt 0 ]; then
stop
for pid in "${pids[@]}"; do
# Loop until we are certain that the process has been stopped
while test -d /proc/"$pid"; do
sleep 0.2
done
done
fi
# Check it hasn't been started by something else in the meantime
pid=$(pgrep "$service")
# Only attempt to start the service if it is not already running
if [ -z "$pid" ]; then
/command/s6-svc -wu -u -T2500 /run/service/"$service"
fi
}
status() {
/command/s6-svstat /run/service/"$service"
}
service="$1"
command="$2"
if [[ ! -d "/run/service/$service" ]] ; then
echo "s6 service not found for $service, exiting..."
exit
fi;
${command} "${service}"