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|
#!/usr/bin/ruby1.8
#
# NAME
# custodian-queue - Work with the queue.
#
# SYNOPSIS
# custodian-queue [ -h | --help ]
# [ -m | --manual ]
# [ -M | --monitor ]
# [ -f | --flush ]
# [ -s | --stats ]
# [ -S | --server 1.2.3.4:123 ]
#
# OPTIONS
#
# -h, --help Show a help message, and exit.
#
# -m, --manual Show this manual, and exit.
#
# -M, --monitor If the queue size exceeds the threshold report that via an exit code.
#
# -f, --flush Flush the queue, removing all jobs.
#
# -s, --stats Show the count of pending jobs.
#
# -S, --server Specify the host:port for the beanstalkd queue.
#
#
# ABOUT
#
# This tool is designed to inspect the beanstalkd queue, or flush the pending
# jobs from it.
#
#
# AUTHOR
#
# Steve Kemp <steve@bytemark.co.uk>
#
#
# Standard modules
#
require 'beanstalk-client'
require 'getoptlong'
#
# Our code
#
require 'custodian/settings'
#
# Entry-point to our code.
#
if __FILE__ == $0 then
$FLUSH = false
$STATS = false
$help = false
$manual = false
$MONITOR = nil
#
# The beanstalkd server address.
#
settings = Custodian::Settings.instance()
$SERVER = settings.queue_server
begin
opts = GetoptLong.new(
[ "--flush", "-f", GetoptLong::NO_ARGUMENT ],
[ "--help", "-h", GetoptLong::NO_ARGUMENT ],
[ "--manual", "-m", GetoptLong::NO_ARGUMENT ],
[ "--monitor", "-M", GetoptLong::OPTIONAL_ARGUMENT ],
[ "--server", "-S", GetoptLong::REQUIRED_ARGUMENT ],
[ "--stats", "-s", GetoptLong::NO_ARGUMENT ]
)
opts.each do |opt, arg|
case opt
when "--monitor" then
if ( arg )
$MONITOR = arg.to_i
else
$MONITOR = 5000
end
when "--stats" then
$STATS = true
when "--flush" then
$FLUSH = true
when "--server" then
$SERVER = arg
when "--help" then
$help = true
when "--manual" then
$manual = true
end
end
rescue StandardError => ex
puts "Option parsing failed: #{ex.to_s}"
exit
end
#
# CAUTION! Here be quality kode.
#
if $manual or $help
# Open the file, stripping the shebang line
lines = File.open(__FILE__){|fh| fh.readlines}[1..-1]
found_synopsis = false
lines.each do |line|
line.chomp!
break if line.empty?
if $help and !found_synopsis
found_synopsis = (line =~ /^#\s+SYNOPSIS\s*$/)
next
end
puts line[2..-1].to_s
break if $help and found_synopsis and line =~ /^#\s*$/
end
exit 0
end
#
# Create the queue object.
#
queue = Beanstalk::Pool.new([$SERVER], "Custodian" )
#
# Alerting on a queue that is too-full?
#
if ( !$MONITOR.nil? )
#
# Find the number of jobs
#
stats = queue.stats()
jobs = stats['current-jobs-ready'] || 0
if ( jobs > $MONITOR )
exit 1
else
exit 0
end
end
#
# Showing stats?
#
if ( $STATS )
stats = queue.stats()
puts "There are #{stats['current-jobs-ready'] || 0} jobs pending."
exit( 0 )
end
#
# Are we flushing the queue?
#
if ( $FLUSH )
count = 0
while( true )
begin
job = queue.reserve(1)
job.delete
count += 1
rescue Beanstalk::TimedOut => ex
puts "Flushed #{count} pending jobs."
exit( 0 )
end
end
end
end
|
