Class: INatGet::App::Worker

Inherits:
Object
  • Object
show all
Defined in:
lib/inat-get/app/core/worker.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(task, **params) ⇒ Worker

Returns a new instance of Worker.



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# File 'lib/inat-get/app/core/worker.rb', line 8

def initialize task, **params
  @task = task
  @params = params
  @console = params.delete :console
  @logger = INatGet::App::ConsoleLogger::new @console, progname: task.name
end

Class Method Details

.count ⇒ Object 



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# File 'lib/inat-get/app/core/worker.rb', line 42

def count
  @detachers ||= []
  @detachers.reject { |dt| !dt.alive? }
  @detachers.size
end

.create(task, **params) ⇒ Object 



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# File 'lib/inat-get/app/core/worker.rb', line 29

def create task, **params
  @detachers ||= []
  pid = fork do
    worker = new(task, **params)
    worker.execute
  end
  result = Process::detach pid
  @detachers << result
  result
end

.enqueue(config, *tasks, **params) ⇒ Object 



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# File 'lib/inat-get/app/core/worker.rb', line 48

def enqueue config, *tasks, **params
  @shutdown = false
  Signal::trap(:TERM) { @shutdown = true }
  Signal::trap(:INT)  { @shutdown = true }
  queue = tasks.dup
  while queue.size > 0 && !@shutdown
    if self.count >= config.dig(:workers, :limit)
      sleep 0.1
      next
    end
    task = queue.shift
    self.create task, **params
    sleep 0.1
  end
  if @shutdown
    @detachers.each do |dt|
      if dt.alive?
        begin
          Process::kill :TERM, dt.pid
        rescue Errno::ESRCH
        end
      end
    end
    @detachers.each do |dt|
      dt.join 0.5
      if dt.alive?
        begin
          Process::kill :KILL, dt.pid
        rescue Errno::ESRCH
        end
      end
    end
  else
    @detachers.map(&:join)
  end
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/inat-get/app/core/worker.rb', line 15

def execute
  require_relative '../../sys/context'
  Signal::trap(:TERM) { INatGet::System::Context::shutdown = true }
  Signal::trap(:INT)  { INatGet::System::Context::shutdown = true }
  @console.register status: 'started...', name: @task.name
  @task.prepare
  @task.execute
  @console.update _active: false, status: 'done'
rescue => e
  @logger.error e.message
end