How to Kill threads that are present in Controller in its model (Ruby 2.1.2 on Rails 3.2.13)

Question

I have a controller RamsController in that I have this method

def check_status

   @ram = Ram.find(params[:id])

   if @ram.workflow == "start"

      thread_status = Thread.new do

         thread.current[:name] = "thread_check_status"

         @ram.check_status!

         ActiveRecord::Base.connection.close

      end

      @ram.thread_check_status = thread_status

   end

  render json: { status: "success" }

end

I have a model code like this

class Ram < ActiveRecord::Base



attr_accessor :thread_check_status 



  def self.kill_threads

    self.thread_check_status.kill

  end



  def exception_handler(exception)

   if exception == "exited by user"

     self.kill_threads

   end

  end

Whenever an exception is caught it will go to the exception_handler method in the model.
And now, I'm trying to kill the thread when the exception is caught so I tried to assign the thread to the variable

@ram.thread_check_status = thread_status

So I created a method

def self.kill_threads

in the model to kill the threads and called that method in

def excpetion_handle

method.

But, it is not working I think I assigned the thread to the variable in a wrong way

@ram.thread_check_status = thread_status

Please suggest me how to kill the threads associated with

@ram

id in the model.

And I have two more methods in RamsController with two more threads and I'm trying kill those threads too.

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Answer 1

I come up with a solution like this. Firstly, in the controller I set the thread variable with a name and value like this

def check_status
   @ram = Ram.find(params[:id])
   if @ram.workflow == "start"
      Thread.new do

Thread.current.thread_variable_set(:thread_name, @ram.id)#This will set the thread value to ram_id

         @ram.check_status!
         ActiveRecord::Base.connection.close
      end
      @ram.thread_check_status = thread_status
   end
  render json: { status: "success" }
end

So in the model I listed all the threads available and killed the thread which is associated with ram_id, thread_name

class Ram < ActiveRecord::Base

attr_accessor :thread_check_status 



  def exception_handler(exception)

Thread.list.each do |thr|

if thr.thread_variable_get(:thread_name) == self.id

thr.kill

end

end

   if exception == "exited by user"
     self.kill_threads
   end
end

How to Kill threads that are present in Controller in its model (Ruby 2.1.2 on Rails 3.2.13)

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