Class: Roast::Workflow::FileStateRepository

Inherits:
StateRepository show all
Defined in:
lib/roast/workflow/file_state_repository.rb

Overview

File-based implementation of StateRepository Handles state persistence to the filesystem in a thread-safe manner

Instance Method Summary collapse

Constructor Details

#initialize(session_manager = SessionManager.new) ⇒ FileStateRepository

Returns a new instance of FileStateRepository.



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# File 'lib/roast/workflow/file_state_repository.rb', line 8

def initialize(session_manager = SessionManager.new)
  super()
  @state_mutex = Mutex.new
  @session_manager = session_manager
end

Instance Method Details

#load_state_before_step(workflow, step_name, timestamp: nil) ⇒ Object 



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# File 'lib/roast/workflow/file_state_repository.rb', line 33

def load_state_before_step(workflow, step_name, timestamp: nil)
  session_dir = @session_manager.find_session_directory(workflow.session_name, workflow.file, timestamp)
  return false unless session_dir

  step_files = find_step_files(session_dir)
  return false if step_files.empty?

  target_index = find_step_before(step_files, step_name)

  if target_index.nil?
    $stderr.puts "No suitable state found for step #{step_name} - no prior steps found in session."
    return false
  end

  if target_index < 0
    $stderr.puts "No state before step #{step_name} (it may be the first step)"
    return false
  end

  state_file = step_files[target_index]
  state_data = load_state_file(state_file)

  # Extract the loaded step name for diagnostics
  loaded_step = File.basename(state_file).split("_", 3)[2].sub(/\.json$/, "")
  $stderr.puts "Found state from step: #{loaded_step} (will replay from here to #{step_name})"

  # If no timestamp provided and workflow has no session, copy states to new session
  should_copy = !timestamp && workflow.session_timestamp.nil?

  copy_states_to_new_session(workflow, session_dir, step_files[0..target_index]) if should_copy
  state_data
end

#save_final_output(workflow, output_content) ⇒ Object 



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# File 'lib/roast/workflow/file_state_repository.rb', line 66

def save_final_output(workflow, output_content)
  return if output_content.empty?

  session_dir = @session_manager.ensure_session_directory(
    workflow.object_id,
    workflow.session_name,
    workflow.file,
    timestamp: workflow.session_timestamp,
  )
  output_file = File.join(session_dir, "final_output.txt")
  File.write(output_file, output_content)
  output_file
rescue => e
  $stderr.puts "Failed to save final output: #{e.message}"
  nil
end

#save_state(workflow, step_name, state_data) ⇒ Object 



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# File 'lib/roast/workflow/file_state_repository.rb', line 14

def save_state(workflow, step_name, state_data)
  @state_mutex.synchronize do
    # If workflow doesn't have a timestamp, let the session manager create one
    workflow.session_timestamp ||= @session_manager.create_new_session(workflow.object_id)

    session_dir = @session_manager.ensure_session_directory(
      workflow.object_id,
      workflow.session_name,
      workflow.file,
      timestamp: workflow.session_timestamp,
    )
    step_file = File.join(session_dir, format_step_filename(state_data[:order], step_name))
    FileUtils.mkdir_p(File.dirname(step_file))
    File.write(step_file, JSON.pretty_generate(state_data))
  end
rescue => e
  $stderr.puts "Failed to save state for step #{step_name}: #{e.message}"
end