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@hron84
Created February 23, 2012 01:41
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Thin service init script with Bundler support
#!/usr/bin/env ruby
me = File.basename($0)
cmd = ARGV.shift
if not cmd or cmd == '--help'
puts "Usage: #{me} COMMAND"
exit 1
end
paths = ENV['PATH'].split(/:/) rescue []
paths.each do |path|
if File.executable? File.join(path, cmd)
puts File.join(path, cmd)
exit 0
end
end
# Similar output as which
STDERR.puts "#{me}: no #{cmd} in (#{ENV['PATH']})"
exit 1
#!/bin/sh
#
# Template SUSE system startup script for example service/daemon thin
# Copyright (C) 1995--2005 Kurt Garloff, SUSE / Novell Inc.
#
# This library is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or (at
# your option) any later version.
#
# This library is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307,
# USA.
#
# /etc/init.d/thin
# and its symbolic link
# /(usr/)sbin/rcthin
#
# Template system startup script for some example service/daemon thin
#
# LSB compatible service control script; see http://www.linuxbase.org/spec/
#
# Note: This template uses functions rc_XXX defined in /etc/rc.status on
# UnitedLinux/SUSE/Novell based Linux distributions. If you want to base your
# script on this template and ensure that it works on non UL based LSB
# compliant Linux distributions, you either have to provide the rc.status
# functions from UL or change the script to work without them.
# See skeleton.compat for a template that works with other distros as well.
#
### BEGIN INIT INFO
# Provides: thin
# Required-Start: $syslog $remote_fs
# Should-Start: $time ypbind smtp
# Required-Stop: $syslog $remote_fs
# Should-Stop: ypbind smtp
# Default-Start: 3 4 5
# Default-Stop: 0 1 2 6
# Short-Description: thin XYZ daemon providing ZYX
# Description: Start thin to allow XY and provide YZ
# continued on second line by '#<TAB>'
# should contain enough info for the runlevel editor
# to give admin some idea what this service does and
# what it's needed for ...
# (The Short-Description should already be a good hint.)
### END INIT INFO
#
# Any extensions to the keywords given above should be preceeded by
# X-VendorTag- (X-UnitedLinux- X-SuSE- for us) according to LSB.
#
# Notes on Required-Start/Should-Start:
# * There are two different issues that are solved by Required-Start
# and Should-Start
# (a) Hard dependencies: This is used by the runlevel editor to determine
# which services absolutely need to be started to make the start of
# this service make sense. Example: nfsserver should have
# Required-Start: $portmap
# Also, required services are started before the dependent ones.
# The runlevel editor will warn about such missing hard dependencies
# and suggest enabling. During system startup, you may expect an error,
# if the dependency is not fulfilled.
# (b) Specifying the init script ordering, not real (hard) dependencies.
# This is needed by insserv to determine which service should be
# started first (and at a later stage what services can be started
# in parallel). The tag Should-Start: is used for this.
# It tells, that if a service is available, it should be started
# before. If not, never mind.
# * When specifying hard dependencies or ordering requirements, you can
# use names of services (contents of their Provides: section)
# or pseudo names starting with a $. The following ones are available
# according to LSB (1.1):
# $local_fs all local file systems are mounted
# (most services should need this!)
# $remote_fs all remote file systems are mounted
# (note that /usr may be remote, so
# many services should Require this!)
# $syslog system logging facility up
# $network low level networking (eth card, ...)
# $named hostname resolution available
# $netdaemons all network daemons are running
# The $netdaemons pseudo service has been removed in LSB 1.2.
# For now, we still offer it for backward compatibility.
# These are new (LSB 1.2):
# $time the system time has been set correctly
# $portmap SunRPC portmapping service available
# UnitedLinux extensions:
# $ALL indicates that a script should be inserted
# at the end
# * The services specified in the stop tags
# (Required-Stop/Should-Stop)
# specify which services need to be still running when this service
# is shut down. Often the entries there are just copies or a subset
# from the respective start tag.
# * Should-Start/Stop are now part of LSB as of 2.0,
# formerly SUSE/Unitedlinux used X-UnitedLinux-Should-Start/-Stop.
# insserv does support both variants.
# * X-UnitedLinux-Default-Enabled: yes/no is used at installation time
# (%fillup_and_insserv macro in %post of many RPMs) to specify whether
# a startup script should default to be enabled after installation.
# It's not used by insserv.
#
# Note on runlevels:
# 0 - halt/poweroff 6 - reboot
# 1 - single user 2 - multiuser without network exported
# 3 - multiuser w/ network (text mode) 5 - multiuser w/ network and X11 (xdm)
#
# Note on script names:
# http://www.linuxbase.org/spec/refspecs/LSB_1.3.0/gLSB/gLSB/scrptnames.html
# A registry has been set up to manage the init script namespace.
# http://www.lanana.org/
# Please use the names already registered or register one or use a
# vendor prefix.
# Check for missing binaries (stale symlinks should not happen)
# Note: Special treatment of stop for LSB conformance
THIN_RUBY=/usr/local/rvm/bin/ruby
if [ ! -f "$THIN_RUBY" ]; then
# If we do not have RVM, falling back to system ruby
THIN_RUBY=/usr/bin/ruby
fi
if [ ! -x "$THIN_RUBY" ]; then
echo "There is no RVM nor Ruby installation found"
echo
echo "Try install Ruby with following command:"
echo
echo " zypper install ruby"
exit 5
fi
THIN_DIR=/etc/thin
THIN_BIN=$(rbwhich thin)
test -n $THIN_BIN || { echo "$THIN_BIN is not exists";
if [ "$1" = "stop" ]; then exit 0;
else exit 5; fi; }
test -d $THIN_DIR || { echo "$THIN_DIR is not created";
if [ "$1" = "stop" ]; then exit 0;
else exit 5; fi; }
# Check for existence of needed config file and read it
THIN_CONFIG=/etc/sysconfig/thin
test -r $THIN_CONFIG || { echo "$THIN_CONFIG not existing";
if [ "$1" = "stop" ]; then exit 0;
else exit 6; fi; }
# Read config
. $THIN_CONFIG
# Source LSB init functions
# providing start_daemon, killproc, pidofproc,
# log_success_msg, log_failure_msg and log_warning_msg.
# This is currently not used by UnitedLinux based distributions and
# not needed for init scripts for UnitedLinux only. If it is used,
# the functions from rc.status should not be sourced or used.
#. /lib/lsb/init-functions
# Shell functions sourced from /etc/rc.status:
# rc_check check and set local and overall rc status
# rc_status check and set local and overall rc status
# rc_status -v be verbose in local rc status and clear it afterwards
# rc_status -v -r ditto and clear both the local and overall rc status
# rc_status -s display "skipped" and exit with status 3
# rc_status -u display "unused" and exit with status 3
# rc_failed set local and overall rc status to failed
# rc_failed <num> set local and overall rc status to <num>
# rc_reset clear both the local and overall rc status
# rc_exit exit appropriate to overall rc status
# rc_active checks whether a service is activated by symlinks
. /etc/rc.status
# Reset status of this service
rc_reset
# Return values acc. to LSB for all commands but status:
# 0 - success
# 1 - generic or unspecified error
# 2 - invalid or excess argument(s)
# 3 - unimplemented feature (e.g. "reload")
# 4 - user had insufficient privileges
# 5 - program is not installed
# 6 - program is not configured
# 7 - program is not running
# 8--199 - reserved (8--99 LSB, 100--149 distrib, 150--199 appl)
#
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signaling is not supported) are
# considered a success.
invoke() {
CONFIGS=$(ls -1 $THIN_DIR/*.yml 2>/dev/null)
if [ -n "$2" ]; then
if [ -e "$THIN_DIR/$2.yml" ]; then
CONFIGS=$THIN_DIR/$2.yml
else
echo "$2: vhost is not exists"
exit 1
fi
fi
for conf in $CONFIGS; do
echo -n "[$1] $conf"
cd $(grep "^chdir: " $conf|sed -e 's/^chdir: //g')
[ -d "./log" ] && chown $(grep "^user: " $conf|sed -e 's/^user: //g') ./log
chown -R $(grep "^user: " $conf|sed -e 's/^user: //g') ./tmp/pids
chgrp -R $(grep "^group: " $conf|sed -e 's/^group: //g') ./tmp/pids
# Checking if vhost asked an RVM support
if [ -e "${PWD}/.rvm" ]; then
eval $(grep '^RUBY_VERSION=' "${PWD}/.rvm")
[ -n "${RUBY_VERSION}" -a -x "/usr/local/rvm/rubies/${RUBY_VERSION}/bin/ruby" ] && THIN_RUBY="/usr/local/rvm/bin/rvm ${RUBY_VERSION} exec"
fi
if [ -e "Gemfile" ]; then
BUNDLE=$(eval "${THIN_RUBY} /usr/local/bin/rbwhich bundle 2>/dev/null")
if [ -z "${BUNDLE}" -o ! -x "${BUNDLE}" ]; then
echo "${conf##*/}: Bundler is not installed under ${RUBY_VERSION}, please do it"
# Because we may processing a lot of configs, we just skip non-loadable vhosts
continue
fi
eval "${THIN_RUBY} $BUNDLE exec thin $1 -d --config=$conf" > /dev/null 2>&1
rc_status -v
else
DAEMON=$(eval "${THIN_RUBY} /usr/local/bin/rbwhich thin 2>/dev/null")
if [ -z "${DAEMON}" -o ! -x "${DAEMON}" ]; then
echo "${conf##*/}: Thin is not installed under ${RUBY_VERSION}, please do it"
# Because we may processing a lot of configs, we just skip non-loadable vhosts
continue
fi
$DAEMON $1 -d --config=$conf > /dev/null 2>&1
rc_status -v
fi
done
}
check_status() {
local pidfile pidbase ret
CONFIGS=$(ls -1 $THIN_DIR/*.yml 2>/dev/null)
if [ -n "$1" ]; then
if [ -e "$THIN_DIR/$1.yml" ]; then
CONFIGS=$THIN_DIR/$1.yml
else
echo "$1: vhost is not exists"
exit 1
fi
fi
for conf in $CONFIGS; do
echo -n "[status] $conf"
cd $(grep "^chdir: " $conf|sed -e 's/^chdir: //g')
pidfile=$(grep "^pid: " $conf|sed -e 's/^pid: //g')
pidbase=${pidfile/.pid/}
pidfile=$(ls -1 ${pidbase}*.pid 2>/dev/null | head -n 1)
checkproc -p ${pidfile} $THIN_RUBY
rc_status -v
done
}
case "$1" in
start)
echo "Starting Thin service "
## Start daemon with startproc(8). If this fails
## the return value is set appropriately by startproc.
invoke start "$2"
# Remember status and be verbose
;;
stop)
echo "Shutting down Thin service "
## Stop daemon with killproc(8) and if this fails
## killproc sets the return value according to LSB.
invoke stop "$2"
# Remember status and be verbose
;;
try-restart|condrestart)
## Do a restart only if the service was active before.
## Note: try-restart is now part of LSB (as of 1.9).
## RH has a similar command named condrestart.
if test "$1" = "condrestart"; then
echo "${attn} Use try-restart ${done}(LSB)${attn} rather than condrestart ${warn}(RH)${norm}"
fi
$0 status
if test $? = 0; then
$0 restart
else
rc_reset # Not running is not a failure.
fi
# Remember status and be quiet
rc_status
;;
restart)
## Stop the service and regardless of whether it was
## running or not, start it again.
echo "Restarting Thin service "
invoke restart "$2"
# Remember status and be verbose
rc_status -v
;;
force-reload)
## Signal the daemon to reload its config. Most daemons
## do this on signal 1 (SIGHUP).
## If it does not support it, restart the service if it
## is running.
echo -n "Reloading Thin service "
## if it supports it:
#/sbin/killproc -HUP $THIN_BIN
#touch /var/run/thin.pid
#rc_status -v
## Otherwise:
$0 try-restart
rc_status
;;
reload)
## Like force-reload, but if daemon does not support
## signaling, do nothing (!)
# If it supports signaling:
#echo -n "Reload service thin "
#/sbin/killproc -HUP $THIN_BIN
##touch /var/run/thin.pid
#rc_status -v
## Otherwise if it does not support reload:
rc_failed 3
rc_status -v
;;
status)
echo "Checking for service thin "
## Check status with checkproc(8), if process is running
## checkproc will return with exit status 0.
# Return value is slightly different for the status command:
# 0 - service up and running
# 1 - service dead, but /var/run/ pid file exists
# 2 - service dead, but /var/lock/ lock file exists
# 3 - service not running (unused)
# 4 - service status unknown :-(
# 5--199 reserved (5--99 LSB, 100--149 distro, 150--199 appl.)
# NOTE: checkproc returns LSB compliant status values.
check_status $2
# NOTE: rc_status knows that we called this init script with
# "status" option and adapts its messages accordingly.
rc_status -v
;;
probe)
## Optional: Probe for the necessity of a reload, print out the
## argument to this init script which is required for a reload.
## Note: probe is not (yet) part of LSB (as of 1.9)
;;
*)
echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload|probe} [VHOST]"
exit 1
;;
esac
rc_exit
# vim: ts=4 sw=4 et
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