| 1 | # frozen_string_literal: true |
| 2 | |
| 3 | class AudioAnalysisSplitfireResultJob < ApplicationJob |
| 4 | queue_as :default |
| 5 | |
| 6 | def perform(splitfire_result_id) |
| 7 | # Get the file to split. |
| 8 | @file = SplitfireResult.find_by(id: splitfire_result_id) |
| 9 | |
| 10 | # Make sure the actual file is attached. |
| 11 | # Otherwise, we don't want to do the job. |
| 12 | return if @file.nil? || !@file.source_file.attached? |
| 13 | |
| 14 | Sidekiq.logger.debug("File: #{@file}") |
| 15 | |
| 16 | # Change working directory to the output folder. |
| 17 | change_working_directory |
| 18 | |
| 19 | length_and_onset do |length, onset| |
| 20 | @file.update(length: length, onset: onset) |
| 21 | Sidekiq.logger.debug("Length: #{length}, Onset: #{onset}") |
| 22 | end |
| 23 | end |
| 24 | |
| 25 | private |
| 26 | |
| 27 | def length_and_onset |
| 28 | Sidekiq.logger.info('Starting AudioAnalysisJob processing...') |
| 29 | @file.source_file.open do |file| |
| 30 | Sidekiq.logger.debug("File path: #{file.path}") |
| 31 | result = `python audio_length.py #{file.path}` |
| 32 | onset = `python onset.py #{file.path}` |
| 33 | # Process onset string into array. |
| 34 | onset = onset_string_to_array(onset) |
| 35 | yield(result, onset) |
| 36 | end |
| 37 | end |
| 38 | |
| 39 | def onset_string_to_array(onset) |
| 40 | onset.delete('[]').split.map(&:to_f) |
| 41 | end |
| 42 | |
| 43 | def change_working_directory |
| 44 | Sidekiq.logger.info('Changing working directory...') |
| 45 | Dir.chdir(ENV['AUDIO_ANALYSIS_WORKING_DIRECTORY']) |
| 46 | system('echo $PWD') |
| 47 | end |
| 48 | end |