Class: Datahen::Scraper::RubyFinisherExecutor

Inherits:
Executor
  • Object
show all
Defined in:
lib/datahen/scraper/ruby_finisher_executor.rb

Constant Summary

Constants inherited from Executor

Executor::MAX_FIND_OUTPUTS_PER_PAGE

Instance Attribute Summary collapse

Attributes inherited from Executor

#filename, #gid, #job_id, #page

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Executor

#clean_backtrace, #eval_with_context, #exec_parser, #find_output, #find_outputs, #finish, #finisher_update, #get_content, #get_failed_content, #get_job_id, #init_global_page, #init_job_page, #init_page, #parsing_update, #remove_old_dups!, #remove_old_output_dups!, #remove_old_page_dups!, #save_outputs, #save_pages, #save_pages_and_outputs, #seeding_update

Methods included from Plugin::ContextExposer

#create_context, #expose_to, #exposed_env, #exposed_methods, #isolated_binding, #var_or_proc

Constructor Details

#initialize(options = {}) ⇒ RubyFinisherExecutor

Returns a new instance of RubyFinisherExecutor.



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# File 'lib/datahen/scraper/ruby_finisher_executor.rb', line 6

def initialize(options={})
  @filename = options.fetch(:filename) { raise "Filename is required"}
  @job_id = options[:job_id]
end

Instance Attribute Details

#save ⇒ Object

Returns the value of attribute save.



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# File 'lib/datahen/scraper/ruby_finisher_executor.rb', line 4

def save
  @save
end

Class Method Details

.exposed_methods ⇒ Object 



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# File 'lib/datahen/scraper/ruby_finisher_executor.rb', line 11

def self.exposed_methods
  [
    :outputs,
    :save_outputs,
    :find_output,
    :find_outputs
  ].freeze
end

Instance Method Details

#eval_finisher_script(save = false) ⇒ Object 



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# File 'lib/datahen/scraper/ruby_finisher_executor.rb', line 31

def eval_finisher_script(save=false)
  update_finisher_starting_status

  proc = Proc.new do
    outputs = []

    begin
      context = isolated_binding({
        outputs: outputs,
        job_id: job_id
      })
      eval_with_context filename, context
    rescue Error::SafeTerminateError => e
      # do nothing, this is fine
    rescue SyntaxError => e
      handle_error(e) if save
      raise e
    rescue => e
      handle_error(e) if save
      raise e
    end

    puts "=========== Finisher Executed ==========="
    begin
      save_outputs(outputs)
    rescue => e
      handle_error(e) if save
      raise e
    end

    update_finisher_done_status
  end
  proc.call
end

#exec_finisher(save = false) ⇒ Object 



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# File 'lib/datahen/scraper/ruby_finisher_executor.rb', line 20

def exec_finisher(save=false)
  @save = save
  if save
    puts "Executing finisher script"
  else
    puts "Trying finisher script"
  end

  eval_finisher_script(save)
end

#handle_error(e) ⇒ Object 



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# File 'lib/datahen/scraper/ruby_finisher_executor.rb', line 107

def handle_error(e)
  error = ["Finisher #{e.class}: #{e.to_s} (Job:#{job_id}",clean_backtrace(e.backtrace)].join("\n")

  finisher_update(
    job_id: job_id,
    finisher_status: :failed,
    log_error: error)
end

#save_type ⇒ Object 



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# File 'lib/datahen/scraper/ruby_finisher_executor.rb', line 66

def save_type
  :executing
end

#update_finisher_done_status ⇒ Object 



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# File 'lib/datahen/scraper/ruby_finisher_executor.rb', line 92

def update_finisher_done_status
  return unless save

  response = finisher_update(
    job_id: job_id,
    finisher_status: :done)

  if response.code == 200
    puts "Finisher Done."
  else
    puts "Error: Unable to save Finisher Done Status to server: #{response.body}"
    raise "Unable to save Finisher Done Status to server: #{response.body}"
  end
end

#update_finisher_starting_status ⇒ Object 



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# File 'lib/datahen/scraper/ruby_finisher_executor.rb', line 77

def update_finisher_starting_status
  return unless save

  response = finisher_update(
    job_id: job_id,
    finisher_status: :starting)

  if response.code == 200
    puts "Finisher Status Updated."
  else
    puts "Error: Unable to save Finisher Status to server: #{response.body}"
    raise "Unable to save Finisher Status to server: #{response.body}"
  end
end

#update_to_server(opts = {}) ⇒ Object 



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# File 'lib/datahen/scraper/ruby_finisher_executor.rb', line 70

def update_to_server(opts = {})
  finisher_update(
    job_id: opts[:job_id],
    outputs: opts[:outputs],
    finisher_status: opts[:status])
end