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#!/usr/bin/env bash
#-----------------------------------------------------------------------------
_USER="freenet"
WRAPPER_CMD="/usr/bin/java-service-wrapper"
WRAPPER_CONF="/opt/freenet/wrapper.config"
PIDFILE="/run/freenet/freenet.pid"
TIMEOUT=120
#-----------------------------------------------------------------------------
fail() {
printf "\e[1;31m>>> ERROR:\033[0m %s\n" "$*"
exit 1
}
check_user() {
if [[ "$(id -un)" != "$_USER" ]]; then
SCRIPT_PATH="$(cd "$(dirname $0)" && pwd)/$(basename $0)"
su - "$_USER" -c "${SCRIPT_PATH} $@"
exit $?
fi
}
init_vars() {
[[ "$EUID" -eq 0 ]] &&
fail "Attempting to start as root! You should never see this message, please report it"
[[ ! -r "$WRAPPER_CONF" ]] &&
fail "Unable to read \$WRAPPER_CONF: ${WRAPPER_CONF}"
[[ ! -x "$WRAPPER_CMD" ]] &&
fail "Unable to find or execute \$WRAPPER_CMD: ${WRAPPER_CMD}"
COMMAND_LINE="\"$WRAPPER_CMD\" \"$WRAPPER_CONF\" wrapper.syslog.ident=\"freenet\" wrapper.name=\"freenet\" TZ=UTC"
}
get_wrapper_pid() {
pgrep -u "$_USER" -f 'wrapper.name=freenet'
}
get_pid() {
pgrep -u "$_USER" -f 'jar'
}
check_if_running() {
unset pid
if [[ -f "$PIDFILE" ]]; then
if [[ -r "$PIDFILE" ]]; then
pid=$(cat "$PIDFILE")
if [[ ! "$pid" ]]; then
pid=$(get_pid)
if [[ ! "$pid" ]]; then
echo "Removing stale pid file: $PIDFILE"
rm -f "$PIDFILE"
fi
else
[[ "$pid" -ne "$(get_pid)" ]] &&
fail "\$PIDFILE $PIDFILE differs from what is actually running!"
fi
else
fail "Cannot read \$PIDFILE: $PIDFILE"
fi
fi
}
_console() {
if [[ ! "$pid" ]]; then
trap '' INT QUIT
eval "$COMMAND_LINE" || fail "Failed to launch the wrapper!"
else
echo "Freenet is already running! (pid: $pid)"
fi
}
_start() {
if [[ ! "$pid" ]]; then
echo -n "Starting Freenet"
COMMAND_LINE+=" wrapper.daemonize=TRUE"
eval "$COMMAND_LINE" || fail "Failed to launch the wrapper!"
i=0
while [[ ! "$pid" || $i -lt $TIMEOUT ]]; do
echo -n "."
sleep 1
check_if_running
((i++))
done
[[ $(get_pid) ]] &&
echo " done" || fail "timeout: Failed to start wrapper!"
else
echo "Freenet is already running! (pid: $pid)"
fi
}
_restart() {
[[ "$pid" ]] &&
kill -USR1 "$(get_wrapper_pid)" || echo "Freenet is not running"
}
_stop() {
if [[ "$pid" ]]; then
echo "Stopping Freenet, this will take a few minutes"
kill -TERM "$(get_wrapper_pid)" || fail "Unable to stop Freenet: kill -TERM $pid"
i=0
while [[ "$pid" || $i -gt $TIMEOUT ]]; do
echo -n "."
sleep 1
[[ ! $(get_pid) ]] && unset pid
((i++))
done
[[ "$pid" ]] &&
fail "timeout: Failed to stop wrapper! (pid: $pid)" || echo " done"
else
echo "Freenet is not running."
fi
}
_dump() {
if [[ "$pid" ]]; then
kill -QUIT "$pid" || fail "Failed to dump Freenet Service"
echo "Thread Dump is available in wrapper.log"
else
echo "Freenet is not running."
fi
}
#-----------------------------------------------------------------------------
[[ "$1" != @(console|start|stop|restart|dump) ]] && {
echo "Usage: $(basename $0) <command>"
echo "Commands:"
echo " console Launch in the current console"
echo " start Start in the background as a daemon process"
echo " stop Stop if running as a daemon or in another console"
echo " restart Restart the JVM"
echo " dump Request a Java thread dump"
exit
}
check_user "$*"
check_if_running
init_vars
case "$1" in
'console') _console
;;
'start') _start
;;
'stop') _stop
;;
'restart') _restart
;;
'dump') _dump
;;
esac
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