Class: Hydra::Master

Inherits:
Object
  • Object
show all
Includes:
Hydra::Messages::Master, Open3
Defined in:
lib/hydra/master.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = { }) ⇒ Master

Create a new Master

Options:

  • :files

    • An array of test files to be run. These should be relative paths from the root of the project, since they may be run on different machines which may have different paths.

  • :workers

    • An array of hashes. Each hash should be the configuration options for a worker.

  • :listeners

    • An array of Hydra::Listener objects. See Hydra::Listener::MinimalOutput for an example listener

  • :verbose

    • Set to true to see lots of Hydra output (for debugging)

  • :autosort

    • Set to false to disable automatic sorting by historical run-time per file


36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
# File 'lib/hydra/master.rb', line 36

def initialize(opts = { })
  opts.stringify_keys!
  config_file = opts.delete('config') { nil }
  if config_file

    begin
      config_erb = ERB.new(IO.read(config_file)).result(binding)
    rescue Exception => e
      raise(YmlLoadError,"config file was found, but could not be parsed with ERB.\n#{$!.inspect}")
    end

    begin
      config_yml = YAML::load(config_erb)
    rescue StandardError => e
      raise(YmlLoadError,"config file was found, but could not be parsed.\n#{$!.inspect}")
    end

    opts.merge!(config_yml.stringify_keys!)
  end
  @files = Array(opts.fetch('files') { nil })
  raise "No files, nothing to do" if @files.empty?
  @incomplete_files = @files.dup
  @failed_files = []
  @workers = []
  @listeners = []
  @event_listeners = Array(opts.fetch('listeners') { nil } )
  @event_listeners.select{|l| l.is_a? String}.each do |l|
    @event_listeners.delete_at(@event_listeners.index(l))
    listener = eval(l)
    @event_listeners << listener if listener.is_a?(Hydra::Listener::Abstract)
  end

  @string_runner_event_listeners = Array( opts.fetch( 'runner_listeners' ) { nil } )

  @runner_log_file = opts.fetch('runner_log_file') { nil }
  @verbose = opts.fetch('verbose') { false }
  @autosort = opts.fetch('autosort') { true }
  @sync = opts.fetch('sync') { nil }
  @environment = opts.fetch('environment') { 'test' }
  @options = opts.fetch('options') { '' }

  if @autosort
    sort_files_from_report
    @event_listeners << Hydra::Listener::ReportGenerator.new(File.new(heuristic_file, 'w'))
  end

  # default is one worker that is configured to use a pipe with one runner
  worker_cfg = opts.fetch('workers') { [ { 'type' => 'local', 'runners' => 1} ] }

  trace "Initialized"
  trace "  Files:   (#{@files.inspect})"
  trace "  Workers: (#{worker_cfg.inspect})"
  trace "  Verbose: (#{@verbose.inspect})"

  @event_listeners.each{|l| l.testing_begin(@files) }

  boot_workers worker_cfg
  process_messages
end

Instance Attribute Details

#failed_filesObject (readonly)

Returns the value of attribute failed_files


17
18
19
# File 'lib/hydra/master.rb', line 17

def failed_files
  @failed_files
end

#report_textObject (readonly)

A text report of the time it took to run each file


142
143
144
# File 'lib/hydra/master.rb', line 142

def report_text
  @report_text
end

Instance Method Details

#process_results(worker, message) ⇒ Object

Process the results coming back from the worker.


114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
# File 'lib/hydra/master.rb', line 114

def process_results(worker, message)
  if message.output =~ /ActiveRecord::StatementInvalid(.*)[Dd]eadlock/ or
     message.output =~ /PGError: ERROR(.*)[Dd]eadlock/ or
     message.output =~ /Mysql::Error: SAVEPOINT(.*)does not exist: ROLLBACK/ or
     message.output =~ /Mysql::Error: Deadlock found/
    trace "Deadlock detected running [#{message.file}]. Will retry at the end"
    @files.push(message.file)
    send_file(worker)
  else
    @incomplete_files.delete_at(@incomplete_files.index(message.file))
    trace "#{@incomplete_files.size} Files Remaining"
    @event_listeners.each{|l| l.file_end(message.file, message.output) }
    unless message.output == '.'
      @failed_files << message.file
    end
    if @incomplete_files.empty?
      @workers.each do |worker|
        @event_listeners.each{|l| l.worker_end(worker) }
      end

      shutdown_all_workers
    else
      send_file(worker)
    end
  end
end

#send_file(worker) ⇒ Object

Send a file down to a worker.


102
103
104
105
106
107
108
109
110
111
# File 'lib/hydra/master.rb', line 102

def send_file(worker)
  f = @files.shift
  if f
    trace "Sending #{f.inspect}"
    @event_listeners.each{|l| l.file_begin(f) }
    worker[:io].write(RunFile.new(:file => f))
  else
    trace "No more files to send"
  end
end

#worker_begin(worker) ⇒ Object

Message handling


97
98
99
# File 'lib/hydra/master.rb', line 97

def worker_begin(worker)
  @event_listeners.each {|l| l.worker_begin(worker) }
end