Class: PerfectSched::Worker

Inherits:
Object
  • Object
show all
Defined in:
lib/perfectsched/worker.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(runner, config = nil, &block) ⇒ Worker

Returns a new instance of Worker.



26
27
28
29
30
31
32
33
34
35
 
# File 'lib/perfectsched/worker.rb', line 26

def initialize(runner, config=nil, &block)
  # initial logger
  STDERR.sync = true
  @log = DaemonsLogger.new(STDERR)

  @runner = runner
  block = Proc.new { config } if config
  @config_load_proc = block
  @finished = false
end

Class Method Details

.run(runner, config = nil, &block) ⇒ Object 



22
23
24
 
# File 'lib/perfectsched/worker.rb', line 22

def self.run(runner, config=nil, &block)
  new(runner, config, &block).run
end

Instance Method Details

#logrotated ⇒ Object 



100
101
102
103
104
105
106
107
108
109
110
 
# File 'lib/perfectsched/worker.rb', line 100

def logrotated
  @log.info "reopen a log file"
  begin
    @log.reopen!
  rescue
    @log.error "failed to restart: #{$!}"
    $!.backtrace.each {|bt| @log.warn "\t#{bt}" }
    return false
  end
  return true
end

#replace(command = [$0]+ARGV) ⇒ Object 



86
87
88
89
90
91
92
93
94
95
96
97
98
 
# File 'lib/perfectsched/worker.rb', line 86

def replace(command=[$0]+ARGV)
  @log.info "replace"
  begin
    return if @replaced_pid
    stop
    @replaced_pid = Process.spawn(*command)
  rescue
    @log.error "failed to replace: #{$!}"
    $!.backtrace.each {|bt| @log.warn "\t#{bt}" }
    return false
  end
  self
end

#restart ⇒ Object 



71
72
73
74
75
76
77
78
79
80
81
82
83
84
 
# File 'lib/perfectsched/worker.rb', line 71

def restart
  @log.info "Received restart"
  begin
    engine = Engine.new(@runner, load_config)
    current = @engine
    @engine = engine
    current.shutdown
  rescue
    @log.error "failed to restart: #{$!}"
    $!.backtrace.each {|bt| @log.warn "\t#{bt}" }
    return false
  end
  return true
end

#run ⇒ Object 



37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
 
# File 'lib/perfectsched/worker.rb', line 37

def run
  @sig = install_signal_handlers
  begin
    @engine = Engine.new(@runner, load_config)
    begin
      until @finished
        @engine.run
      end
    ensure
      @engine.shutdown
    end
  ensure
    @sig.stop
  end
  return nil
rescue
  @log.error "#{$!.class}: #{$!}"
  $!.backtrace.each {|x| @log.error "  #{x}" }
  return nil
end

#stop ⇒ Object 



58
59
60
61
62
63
64
65
66
67
68
69
 
# File 'lib/perfectsched/worker.rb', line 58

def stop
  @log.info "stop"
  begin
    @finished = true
    @engine.stop if @engine
  rescue
    @log.error "failed to stop: #{$!}"
    $!.backtrace.each {|bt| @log.warn "\t#{bt}" }
    return false
  end
  return true
end