Class: Ace::Assign::CLI::Commands::ForkRun

Inherits:
Support::Cli::Command
  • Object
show all
Includes:
AssignmentTarget, Support::Cli::Base
Defined in:
lib/ace/assign/cli/commands/fork_run.rb

Overview

Prepare and validate a subtree-scoped fork execution session.

Constant Summary collapse

STALL_REASON_MAX = 
2000

Instance Method Summary collapse

Constructor Details

#initialize(launcher: nil) ⇒ ForkRun

Returns a new instance of ForkRun.



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# File 'lib/ace/assign/cli/commands/fork_run.rb', line 28

def initialize(launcher: nil)
  super()
  @launcher = launcher || Molecules::ForkSessionLauncher.new
end

Instance Method Details

#call(**options) ⇒ Object 



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# File 'lib/ace/assign/cli/commands/fork_run.rb', line 33

def call(**options)
  target = resolve_assignment_target(options)
  executor = build_executor_for_target(target)
  result = executor.status
  assignment = result[:assignment]
  state = result[:state]
  current = result[:current]

  root_step = resolve_root_step(state, current, options[:root], target.scope)
  ensure_root_is_fork!(root_step)
  resolved_provider = resolved_provider_for(root_step, options[:provider])

  if state.subtree_complete?(root_step.number)
    puts "Subtree #{root_step.number} is already complete." unless options[:quiet]
    return
  end

  unless options[:quiet]
    next_step = state.next_workable_in_subtree(root_step.number)
    puts "Starting fork subtree execution: #{root_step.number} - #{root_step.name}"
    puts "Assignment: #{assignment.id}"
    puts "Provider: #{resolved_provider}"
    puts "Launch mode: #{options[:launch_mode] || Molecules::ForkSessionLauncher::DEFAULT_LAUNCH_MODE}"
    puts "Timeout: #{options[:timeout] || Ace::Assign.config.dig("execution", "timeout") || Molecules::ForkSessionLauncher::DEFAULT_TIMEOUT}s"
    puts "Next step: #{next_step.number} - #{next_step.name}" if next_step
  end

  active_in_subtree = state.in_progress_in_subtree(root_step.number)
  if active_in_subtree.size > 1
    active_refs = active_in_subtree.map { |step| "#{step.number}(#{step.name})" }.join(", ")
    raise StepErrors::InvalidState, "Cannot fork-run subtree #{root_step.number}: multiple steps are already in progress (#{active_refs})."
  end

  # Mark the next workable step as in_progress only when no subtree step is active.
  # For leaf fork roots, this activates the root itself.
  if active_in_subtree.empty?
    first_workable = state.next_workable_in_subtree(root_step.number)
    if first_workable
      step_writer = Molecules::StepWriter.new
      step_writer.mark_in_progress(first_workable.file_path)
    end
  end

  launch_result = launcher.launch(
    assignment_id: assignment.id,
    fork_root: root_step.number,
    provider: resolved_provider,
    cli_args: options[:cli_args],
    timeout: options[:timeout],
    cache_dir: assignment.cache_dir,
    launch_mode: options[:launch_mode]
  )
  record_fork_pid_info(root_step, launch_result)

  refreshed = executor.status
  refreshed_state = refreshed[:state]

  if refreshed_state.subtree_failed?(root_step.number)
    failed = refreshed_state.subtree_steps(root_step.number).select { |s| s.status == :failed }
    failed_refs = failed.map { |p| "#{p.number}(#{p.name})" }.join(", ")
    raise Error, "Fork subtree #{root_step.number} failed: #{failed_refs}"
  end

  unless refreshed_state.subtree_complete?(root_step.number)
    active = refreshed_state.in_progress_in_subtree(root_step.number).first || refreshed_state.current
    active_msg = active ? " Current step: #{active.number} (#{active.name})." : ""
    last_msg = read_last_message(assignment.cache_dir, root_step.number)
    stall_reason = build_stall_reason(last_msg)
    session_meta = read_session_metadata(assignment.cache_dir, root_step.number)

    if stall_reason && active
      step_writer = Molecules::StepWriter.new
      step_writer.update_frontmatter(active.file_path, {"stall_reason" => stall_reason})
    end

    session_info = session_meta&.dig("session_id") ? " Session: #{session_meta["session_id"]}" : ""
    error_msg = "Fork subtree #{root_step.number} did not complete within spawned session.#{active_msg}#{session_info}"
    error_msg += "\n\nAgent's last message:\n#{stall_reason}" if stall_reason
    raise Error, error_msg
  end

  # Clear any stale stall_reason left by a previous failed attempt.
  stale_steps = refreshed_state.subtree_steps(root_step.number).select(&:stall_reason)
  if stale_steps.any?
    step_writer = Molecules::StepWriter.new
    stale_steps.each do |step|
      step_writer.update_frontmatter(step.file_path, {"stall_reason" => nil})
    end
  end

  puts "Fork subtree #{root_step.number} completed successfully." unless options[:quiet]
end