Class: RQ::Rotater

Inherits:
MainHelper show all
Defined in:
lib/rq-3.0.0/rotater.rb

Constant Summary

Constants included from Logging

Logging::DIV0, Logging::DIV1, Logging::DIV2, Logging::DIV3, Logging::EOL, Logging::SEC0, Logging::SEC1, Logging::SEC2, Logging::SEC3

Instance Attribute Summary

Attributes inherited from MainHelper

#argv, #cmd, #dot_rq_dir, #env, #fields, #job_stdin, #main, #mode, #options, #q, #qpath, #quiet, #stdin

Instance Method Summary collapse

Methods inherited from MainHelper

#dumping_yaml_tuples, #field_match, #init_job_stdin!, #initialize, #loadio, #loadyaml, #set_q

Methods included from Logging

append_features

Methods included from Logging::LogMethods

#debug, #error, #fatal, #info, #logerr, #logger, #logger=, #warn

Methods included from Util

#alive?, append_features, #btrace, #columnize, #defval, #emsg, #erreq, #errmsg, #escape, #escape!, #exec, export, #fork, #getopt, #hashify, #hms, #host, #hostname, #klass, #maim, #mcp, #realpath, #stamptime, #system, #timestamp, #tmpnam, #uncache, #which_ruby

Constructor Details

This class inherits a constructor from RQ::MainHelper

Instance Method Details

#cp_r(srcdir, dstdir) ⇒ Object

the cp_r should never fail, so we build in another attempt under failing conditions



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# File 'lib/rq-3.0.0/rotater.rb', line 75

def cp_r srcdir, dstdir
#--{{{
attempts = 0
loop do
  begin
    break(FileUtils::cp_r(srcdir, dstdir))
  rescue => e
    raise if attempts > 2
    warn{ e }
    Util::uncache srcdir rescue nil
    Util::uncache dstdir rescue nil
    sleep 2
  ensure
    attempts += 1
  end
end
#--}}}
end

#rotate ⇒ Object

–{{{



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# File 'lib/rq-3.0.0/rotater.rb', line 12

def rotate
#--{{{
  set_q

  rot = Util::realpath @argv.shift

  rot =
    if rot 
      if File::directory? rot
        t = Time::now.strftime('%Y%m%d%H%M%S')
        File::join(rot, "#{ File.basename @qpath }.#{ t }")
      else
        rot
      end
    else
      t = Time::now.strftime('%Y%m%d%H%M%S')
      "#{ @qpath }.#{ t }"
    end

  #rot ||= "#{ @qpath }.#{ Util::timestamp.gsub(/[:\s\.-]/,'_') }.rot"

  abort "<#{ rot }> exists" if rot and test(?e, rot)
  debug{ "rotation <#{ rot }>" }

  FileUtils::mkdir_p(File::dirname(rot)) rescue nil

  rotq = nil

  @q.transaction do
    begin
      #FileUtils::cp_r @qpath, rot
      self.cp_r @qpath, rot
      rotq = JobQueue::new rot, 'logger' => @logger
      rotq.delete 'pending', 'running', 'holding', 'force' => true
      @q.delete 'dead', 'finished'
    rescue
      FileUtils::rm_rf rot
      raise
    end
  end

  tgz = File::expand_path "#{ rot }.tgz"
  #dirname = File::dirname rot 
  if(system("cd #{ File::dirname rot } && tar cvfz #{ File::basename tgz } #{ File::basename rot }/ >/dev/null 2>&1"))
    FileUtils::rm_rf rot
    rot = tgz
  end

  puts "---"
  puts "rotation : #{ rot }" 

  #puts '---'
  #puts "q: #{ rotq.path }"
  #puts "db: #{ rotq.db.path }"
  #puts "schema: #{ rotq.db.schema }"
  #puts "lock: #{ rotq.db.lockfile }"

  EXIT_SUCCESS
#--}}}
end