Class: BaseChip::Tasker

Inherits:
Object
  • Object
show all
Includes:
Ipc
Defined in:
lib/base_chip/tasker.rb

Constant Summary collapse

CLEAR = 
"\e[0K"
@@last_client_id = 
0

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Ipc

included

Constructor Details

#initialize(*args) ⇒ Tasker

Returns a new instance of Tasker.



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# File 'lib/base_chip/tasker.rb', line 41

def initialize(*args)
  @workers = {}

  @pending_tasks  = []; @tasks_pending  = 0
  @running_tasks  = []; @tasks_running  = 0
  @complete_tasks = []; @tasks_complete = 0
  @tasks_passed = 0
  @tasks_failed = 0

  @mutex = Mutex.new

  @server = self
end

Instance Attribute Details

#client_id ⇒ Object

Returns the value of attribute client_id.



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# File 'lib/base_chip/tasker.rb', line 39

def client_id
  @client_id
end

#client_of ⇒ Object

Returns the value of attribute client_of.



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# File 'lib/base_chip/tasker.rb', line 38

def client_of
  @client_of
end

#clusters ⇒ Object

Returns the value of attribute clusters.



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# File 'lib/base_chip/tasker.rb', line 30

def clusters
  @clusters
end

#complete_tasks ⇒ Object

Returns the value of attribute complete_tasks.



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# File 'lib/base_chip/tasker.rb', line 36

def complete_tasks
  @complete_tasks
end

#foreground ⇒ Object

Returns the value of attribute foreground.



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# File 'lib/base_chip/tasker.rb', line 28

def foreground
  @foreground
end

#pending_tasks ⇒ Object

Returns the value of attribute pending_tasks.



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# File 'lib/base_chip/tasker.rb', line 34

def pending_tasks
  @pending_tasks
end

#running_tasks ⇒ Object

Returns the value of attribute running_tasks.



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# File 'lib/base_chip/tasker.rb', line 35

def running_tasks
  @running_tasks
end

#task_master ⇒ Object

Returns the value of attribute task_master.



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# File 'lib/base_chip/tasker.rb', line 26

def task_master
  @task_master
end

#workers ⇒ Object

Returns the value of attribute workers.



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# File 'lib/base_chip/tasker.rb', line 32

def workers
  @workers
end

Instance Method Details

#available_slots ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 122

def available_slots
  count = 0
  @clusters.each do |c|
    count += c.available_slots
  end
  count
end

#clear_line ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 256

def clear_line
  print "#{Tasker::CLEAR}\r"
end

#finish ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 222

def finish
  return if @finishing
            @finishing = true

  kill
  @task_master.tasker_finish
  DRb.stop_service
end

#get_task(client_id) ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 183

def get_task(client_id)
  @mutex.lock
  ready = maintain_workers

  w = @workers[client_id]
  raise "Could not find worker based on unique id #{client_id}" unless w

  t = nil
  ready.each do |rt|
    if rt.worker_command.nil? || rt.worker_command.call(0) == w[:worker_command]
      t = rt
      break
    end
  end

  if t
    @pending_tasks.delete t
    @running_tasks <<     t
    @tasks_pending -= 1
    @tasks_running += 1

    w[:tasks] << t
    w[:state] = :running
  else
    w[:state] = :stopped
    w[:cluster].slots_used -= 1 if w[:cluster]
  end

  finish if @pending_tasks.empty? && @running_tasks.empty? && ready.empty?

  if @pending_tasks.size > 0 && @running_tasks.empty? && ready.empty?
    raise("Could not build tasks because their dependencies never cleared: " + (@pending_tasks.map{|t|t.task_name}.join(" ")))
  end

  status_line
  @mutex.unlock
  t
end

#inner_register_results(t, result, *additional) ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 89

def inner_register_results(t, result, *additional)
  return         if @complete_tasks.select {|t2| t2.task_name == t.task_name}[0]
  original_task   = (@pending_tasks.select {|t2| t2.task_name == t.task_name}[0])
  original_task ||= (@running_tasks.select {|t2| t2.task_name == t.task_name}[0])
  raise "INTERNAL ERROR: couldn't find #{t.task_name}" unless original_task

  if result == :cancel
       @tasks_pending -= 1; @pending_tasks.delete original_task
  else @tasks_running -= 1; @running_tasks.delete original_task
  end
  @complete_tasks << t
  @tasks_complete += 1

  if result == 'pass'
       @tasks_passed += 1
       original_task.next_tasks.each { |nt| nt.wait_count -= 1                 }
  else original_task.next_tasks.each { |nt| inner_register_results(nt,:cancel) }
       @tasks_failed += 1 unless result == :cancel
  end
  @task_master.tasker_handle_results(t, result, *additional)
  status_line

  finish if (BaseChip.options.max_fails  && @tasks_failed >= BaseChip.options.max_fails ) ||
            (BaseChip.options.max_passes && @tasks_passed >= BaseChip.options.max_passes)
end

#kill ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 231

def kill
  locked = @mutex.try_lock
  @workers.each do |id,w|
    next if w[:stopped]
    if w[:cluster] && (w[:state] != :stopped)
      kill_message
      w[:cluster].kill(w[:uid])
    end
  end
  (@running_tasks + @pending_tasks).each do |t|
    inner_register_results t, :cancel
  end
  @mutex.unlock if locked
end

#kill_message ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 245

def kill_message
  return if @kill_message
            @kill_message = true
  puts "#{Tasker::CLEAR}\rClosing down all workers.  Please be patient."
end

#maintain_workers ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 141

def maintain_workers
  ready = @pending_tasks.select {|t| t.wait_count == 0}
  if @clusters
    slots = available_slots
    foo = ready.size - workers_spawned
    foo = slots if slots < foo
    if foo > 0
      foo.times do |i|
        client_id = new_client_id
        cluster, uid = spawn_worker(ready[0].worker_command.call(client_id))
        raise "spawn_worker response wasn't unique" if @workers[uid]
        @workers[client_id] = {:uid => uid, :cluster=> cluster, :started=>Time.now, :tasks=>[], :state=>:spawned, :worker_command=>ready[i].worker_command.call(0)}
        status_line
      end
    end
  else
    @workers[0] = {:started=>Time.now, :tasks=>[], :state=>:running, :worker_command=>ready[0].worker_command} if ready[0]
  end

  # puts "ready=#{(ready.*.task_name).inspect}"
  ready
end

#new_client_id ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 138

def new_client_id
  @@last_client_id += 1
end

#ready ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 58

def ready
  init_test_sockets(:server)
end

#register_results(t, result, *additional) ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 80

def register_results(t, result, *additional)
  if @client_of
    @server.register_results(t, result, *additional)
    return
  end
  @mutex.lock
  inner_register_results(t, result, *additional)
  @mutex.unlock
end

#run ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 62

def run
  STDOUT.sync = true 
  if @client_of || @clusters.nil?
    begin
      if @client_of
        init_test_sockets(:client)
      end
      while(t = @server.get_task(@client_id))
        @task_master.tasker_run_task t
      end
    rescue DRb::DRbConnError
      # raise if @options.debug
    end
  else
    DRb.thread.join
  end
end

#spawn_worker(command) ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 129

def spawn_worker(command)
  @clusters.each do |c|
    if c.available_slots > 0
      c.slots_used += 1
      return c, c.submit(command)
    end
  end
end

#status_line ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 114

def status_line
  return if @foreground
  wr = workers_running
  wa = workers_alive
  wp = wa > 0 ? (100*wr/wa).round : 0
  raise "Workload is empty" if tasks_total == 0
  print "#{Tasker::CLEAR}complete:#{@tasks_complete}/#{tasks_total}(#{(100*@tasks_complete/tasks_total).round}%) workers:#{wr}/#{wa}(#{wp}%) pass:#{@tasks_passed} fail:#{@tasks_failed} run:#{@tasks_running} pend:#{@tasks_pending}\r"
end

#submit(task) ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 170

def submit(task)
  task.foreground = self.foreground
  @pending_tasks << task
  @tasks_pending += 1
  maintain_workers
  status_line
end

#submit_name(t_name, worker_command = nil) ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 164

def submit_name(t_name,worker_command=nil)
  task = Task.new
  task.task_name      = t_name
  task.worker_command = worker_command if @clusters
  submit(task)
end

#submit_workload_chain(chain) ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 177

def submit_workload_chain(chain)
  @pending_tasks = chain
  @tasks_pending = chain.size
  maintain_workers
  status_line
end

#tasks_total ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 54

def tasks_total
  @tasks_pending + @tasks_running + @tasks_complete
end

#workers_alive ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 251

def workers_alive;   c=0; @workers.each_value{|w| c+=1 if w[:state] != :stopped}; c end

#workers_running ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 252

def workers_running; c=0; @workers.each_value{|w| c+=1 if w[:state] == :running}; c end

#workers_spawned ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 253

def workers_spawned; c=0; @workers.each_value{|w| c+=1 if w[:state] == :spawned}; c end

#workers_stopped ⇒ Object 



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# File 'lib/base_chip/tasker.rb', line 254

def workers_stopped; c=0; @workers.each_value{|w| c+=1 if w[:state] == :stopped}; c end