snapshot of https://github.com/centrifugal/centrifugo.git (master, 2026-09-16; blobs > 131072B omitted)

misc/packaging/initd.sh

@@ -0,0 +1,262 @@
+#! /usr/bin/env bash
+
+### BEGIN INIT INFO
+# Provides:          centrifugo
+# Required-Start:    $all
+# Required-Stop:     $remote_fs $syslog
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: Start centrifugo at boot time
+### END INIT INFO
+
+# Command-line options that can be set in /etc/default/centrifugo.  These will override
+# any config file values. Example: CENTRIFUGO_OPTS="--engine=redis"
+DEFAULT=/etc/default/centrifugo
+
+# Daemon options
+CENTRIFUGO_OPTS=
+
+# Process name
+readonly NAME=centrifugo
+
+# Absolute path to the printf executable.
+readonly PRINT=/usr/bin/printf
+
+# Absolute path to the which executable.
+readonly WHICH=/usr/bin/which
+
+# User and group
+USER=centrifugo
+GROUP=centrifugo
+
+# Daemon name, where is the actual executable
+# If the daemon is not there, then exit.
+DAEMON=/usr/bin/centrifugo
+[ -x $DAEMON ] || exit 5
+
+# Configuration file
+CONFIG=/etc/centrifugo/config.json
+
+# PID file for the daemon
+PIDFILE=/var/run/centrifugo/centrifugo.pid
+PIDDIR=`dirname $PIDFILE`
+if [ ! -d "$PIDDIR" ]; then
+    mkdir -p $PIDDIR
+    chown $USER:$GROUP $PIDDIR
+fi
+
+# Max open files
+OPEN_FILE_LIMIT=65536
+
+if [ -r /lib/lsb/init-functions ]; then
+    source /lib/lsb/init-functions
+fi
+
+readonly EC_INVALID_ARGUMENT=2
+readonly EC_SUPER_USER_ONLY=4
+readonly EC_DAEMON_NOT_FOUND=5
+readonly EC_RELOADING_FAILED=95
+readonly EC_RESTART_STOP_FAILED=96
+readonly EC_RESTART_START_FAILED=97
+readonly EC_START_FAILED=98
+readonly EC_STOP_FAILED=99
+
+# Logging
+if [ -z "$STDOUT" ]; then
+    STDOUT=/var/log/centrifugo/centrifugo.log
+fi
+
+if [ ! -f "$STDOUT" ]; then
+    mkdir -p $(dirname $STDOUT)
+fi
+
+if [ -z "$STDERR" ]; then
+    STDERR=/var/log/centrifugo/centrifugo.log
+fi
+
+if [ ! -f "$STDERR" ]; then
+    mkdir -p $(dirname $STDERR)
+fi
+
+# Overwrite init script variables with /etc/default/centrifugo values
+if [ -r $DEFAULT ]; then
+    source $DEFAULT
+fi
+
+# Exit the script with an error code.
+die() {
+    log_end_msg $1
+    exit $1
+}
+
+# End the script.
+end() {
+    log_end_msg 0
+    exit 0
+}
+
+# Display failure message.
+fail() {
+    log_failure_msg "${NAME}" "$1"
+}
+
+# Display success message.
+ok() {
+    log_success_msg "${NAME}" "$1"
+}
+
+# Reloads the service.
+reload_service()
+{
+    start-stop-daemon --stop --signal HUP --pidfile $PIDFILE
+    if [ $? -ne 0 ]; then
+        fail "failed to reload"
+    else
+        ok "reloaded"
+    fi    
+}
+
+# Starts the service.
+start_service()
+{
+    # Check if config file exist
+    if [ ! -r $CONFIG ]; then
+        fail "config file doesn't exist (or you don't have permission to view)"
+        return 1
+    fi
+    # Bump the file limits, before launching the daemon. These will carry over to
+    # launched processes.
+    ulimit -n $OPEN_FILE_LIMIT
+    if [ $? -ne 0 ]; then
+        fail "set open file limit to $OPEN_FILE_LIMIT"
+        return 1
+    fi    
+    start-stop-daemon --start --chuid $GROUP:$USER --quiet --background --make-pidfile --pidfile $PIDFILE --startas /bin/bash -- -c "exec $DAEMON -c $CONFIG $CENTRIFUGO_OPTS >> $STDOUT 2>&1"
+    if [ $? -ne 0 ]; then
+        fail "failed to start"
+    else
+        ok "started"
+    fi
+}
+
+# Stops the service.
+stop_service() {
+    start-stop-daemon --stop --signal QUIT --retry=TERM/30/KILL/5 --pidfile $PIDFILE
+    if [ $? -ne 0 ]; then
+        fail "failed to stop"
+    else
+        ok "stopped"
+    fi    
+}
+
+# Load the LSB log_* functions.
+INCLUDE=/lib/lsb/init-functions
+if [ -r "${INCLUDE}" ]
+then
+    . "${INCLUDE}"
+else
+    "${PRINT}" '%s: unable to load LSB functions, cannot start service.\n' "${NAME}" 1>&2
+    exit ${EC_DAEMON_NOT_FOUND}
+fi
+
+# Make sure only one argument was passed to the script.
+if [ $# -ne 1 ]
+then
+    if [ $# -lt 1 -o "$1" = '' ]
+        then fail 'action not specified.'
+        else fail 'too many arguments.'
+    fi
+    usage 1>&2
+    die ${EC_INVALID_ARGUMENT}
+fi
+readonly ACTION="$1"
+
+# Check if daemon is a recognized program and get absolute path.
+readonly DAEMON=$("${WHICH}" "${NAME}")
+if [ ! -x "${DAEMON}" ]
+then
+    if [ "${ACTION}" = 'stop' ]
+    then
+        fail 'executable not found: stop request ignored'
+        end
+    else
+        fail "executable not found: cannot ${ACTION} service"
+        die ${EC_DAEMON_NOT_FOUND}
+    fi
+fi
+
+# Check start-stop-daemon
+readonly SSD=$("${WHICH}" "start-stop-daemon")
+if [ ! -x "${SSD}" ]
+then
+    fail "start-stop-daemon required"
+    end
+fi
+
+# Determine the service's status.
+start-stop-daemon --status --pidfile "${PIDFILE}" 2>/dev/null 1>/dev/null
+readonly STATUS=$?
+
+configtest() {
+    $DAEMON checkconfig -c $CONFIG
+}
+
+status_q() {
+    status_of_proc "${DAEMON}" "${NAME}" >/dev/null 2>&1
+}
+
+case $1 in
+    start)
+        if [ ${STATUS} -eq 0 ]
+        then
+            ok 'already started.'
+        else
+            start_service || die ${EC_START_FAILED}
+        fi
+        ;;
+    stop)
+        if [ ${STATUS} -eq 0 ]
+        then
+            stop_service || die ${EC_STOP_FAILED}
+        else
+            ok 'already stopped.'
+        fi
+        ;;
+    restart)
+        if [ ${STATUS} -eq 0 ]
+        then
+            stop_service || die ${EC_RESTART_STOP_FAILED}
+            sleep 1
+        fi
+        start_service || die ${EC_RESTART_START_FAILED}
+        ;;
+    configtest)
+        $1
+        ;;
+    status)
+        status_of_proc "${DAEMON}" "${NAME}" || exit $?
+        ;;
+    reload)
+        if [ ${STATUS} -eq 0 ]
+        then
+            configtest
+            if [[ $? -ne 0 ]]; then
+                die ${EC_RELOADING_FAILED}
+            fi
+            reload_service || die ${EC_RELOADING_FAILED}
+        else
+            fail 'service not running, nothing to be done.'
+        fi
+        ;;        
+    version)
+        $DAEMON version
+        ;;
+    condrestart)
+        status_q && $0 restart || exit 0
+        ;;
+    *)
+        # For invalid arguments, print the usage message.
+        echo "Usage: $0 {start|stop|restart|condrestart|reload|configtest|status|version}"
+        exit 2
+        ;;
+esac