Class: BatchImportRunner

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# File 'backend/app/lib/batch_import_runner.rb', line 44

def self.instance_for(job)
  if job.job_type == "import_job"
    self.new(job)
  else
    nil
  end
end

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# File 'backend/app/lib/batch_import_runner.rb', line 53

def run
  ticker = Ticker.new(@job)

  last_error = nil
  batch = nil
  success = false

  filenames = @json.job['filenames'] || []

  # Wrap the import in a transaction if the DB supports MVCC
  begin
    DB.open(DB.supports_mvcc?,
            :retry_on_optimistic_locking_fail => true) do

      begin
        @job.job_files.each_with_index do |input_file, i|
          ticker.log(("=" * 50) + "\n#{filenames[i]}\n" + ("=" * 50)) if filenames[i]
          converter = Converter.for(@json.job['import_type'], input_file.file_path)
          begin
            RequestContext.open(:create_enums => true,
                                :current_username => @job.owner.username,
                                :repo_id => @job.repo_id) do

              converter.run

              File.open(converter.get_output_path, "r") do |fh|
                batch = StreamingImport.new(fh, ticker, @import_canceled)
                batch.process
                log_created_uris(batch)
                success = true
              end
            end
          ensure
            converter.remove_files
          end
        end
      rescue ImportCanceled
        raise Sequel::Rollback
      rescue JSONModel::ValidationException, ImportException, Converter::ConverterMappingError, Sequel::ValidationFailed, ReferenceError => e
        # Note: we deliberately don't catch Sequel::DatabaseError here.  The
        # outer call to DB.open will catch that exception and retry the
        # import for us.
        last_error = e

        # Roll back the transaction (if there is one)
        raise Sequel::Rollback
      end
    end
  rescue
    last_error = $!
  end

  if last_error
   
    ticker.log("\n\n" ) 
    ticker.log( "!" * 50 ) 
    ticker.log( "IMPORT ERROR" ) 
    ticker.log( "!" * 50 ) 
    ticker.log("\n\n" ) 
    
    if  last_error.respond_to?(:errors)
   
      ticker.log("#{last_error}") if last_error.errors.empty? # just spit it out if there's not explicit errors
      
      ticker.log("The following errors were found:\n") 
      
      last_error.errors.each_pair { |k,v| ticker.log("\t#{k.to_s} : #{v.join(' -- ')}" ) }
      
      if last_error.is_a?(Sequel::ValidationFailed) 
        ticker.log("\n" ) 
        ticker.log("%" * 50 ) 
        ticker.log("\n Full Error Message:\n #{last_error.to_s}\n\n") 
      end 
      
      if ( last_error.respond_to?(:invalid_object) && last_error.invalid_object ) 
        ticker.log("\n\n For #{ last_error.invalid_object.class }: \n #{ last_error.invalid_object.inspect  }")  
      end 
      
      if ( last_error.respond_to?(:import_context) && last_error.import_context )
        ticker.log("\n\nIn : \n #{ CGI.escapeHTML( last_error.import_context ) } ")
        ticker.log("\n\n") 
      end 
    else
      ticker.log("Error: #{CGI.escapeHTML(  last_error.inspect )}")
    end
    ticker.log("!" * 50 ) 
    raise last_error
  end
end