Class: Ralph::Iteration

Inherits:
Object
  • Object
show all
Includes:
Helpers
Defined in:
lib/ralph/iteration.rb

Defined Under Namespace

Classes: Result

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Helpers

#check_completion, #escape_regex, #format_duration, #format_duration_long, #format_tool_summary, #now_ms, #strip_ansi, #which

Constructor Details

#initialize(loop_context) ⇒ Iteration

Returns a new instance of Iteration.



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# File 'lib/ralph/iteration.rb', line 42

def initialize(loop_context)
  @loop = loop_context
  @config = @loop.config
  @agent = @loop.agent
  @state = @loop.state
  @struggle_indicators = @loop.struggle_indicators

  # Streaming configuration
  @compact_tools = !@config.verbose_tools
  @tool_summary_interval_ms = 3000
  @heartbeat_interval_ms = 10_000

  @stream_tool_counts = Hash.new(0)
  @mutex = Mutex.new
  @timing = { last_printed_at: now_ms, last_activity_at: now_ms }
  @last_tool_summary_at = 0

  @iteration_start = now_ms
end

Instance Attribute Details

#iteration_start ⇒ Object (readonly)

Returns the value of attribute iteration_start.



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# File 'lib/ralph/iteration.rb', line 40

def iteration_start
  @iteration_start
end

#struggle_indicators ⇒ Object (readonly)

Returns the value of attribute struggle_indicators.



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# File 'lib/ralph/iteration.rb', line 40

def struggle_indicators
  @struggle_indicators
end

Instance Method Details

#context_at_start ⇒ Object 



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# File 'lib/ralph/iteration.rb', line 62

def context_at_start = @_context_at_start ||= @loop.context

#handle_iteration_error(error, iteration_start) ⇒ Object

———- Warnings and error detection ———-



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# File 'lib/ralph/iteration.rb', line 147

def handle_iteration_error(error, iteration_start)
end

#run ⇒ Object 



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# File 'lib/ralph/iteration.rb', line 64

def run
  snapshot_before = Git::FileSnapshot.capture

  if @config.stream_output
    heartbeat = Threads::Heartbeat.new(iteration_start, @heartbeat_interval_ms, @timing, @mutex)
  end

  @agent.execute(
    @loop.prompt.build_iteration(@state, @agent),
    on_line:               method(:handle_line),
    model:                 @config.model,
    stream_output:         @config.stream_output,
    disable_plugins:       @config.disable_plugins,
    allow_all_permissions: @config.allow_all_permissions,
  ).then do |agent_result|
    heartbeat&.stop

    if @config.stream_output
      @mutex.synchronize { maybe_print_tool_summary(force: true) }
    end

    unless @config.stream_output
      if agent_result
        warn agent_result.stderr_text unless agent_result.stderr_text.empty?
        puts agent_result.stdout_text
      end
    end

    snapshot_after = Git::FileSnapshot.capture

    combined_output = agent_result.combined_output
    completion_detected = check_completion(combined_output, @config.completion_promise)
    fatal_error = @agent.detect_fatal_error(combined_output)

    status = (
      if fatal_error
        :fatal
      elsif agent_result.exit_code != 0
        :failed
      elsif completion_detected
        :completed
      else
        :continuing
      end
    )

    Result.new(
      status: status,
      agent_result: agent_result,
      duration_ms: now_ms - iteration_start,
      files_modified: snapshot_before.modified_since(snapshot_after),
      completion_detected: completion_detected,
      errors: @agent.extract_errors(combined_output)
    ).tap do |result|
      update_struggle_indicators(result)
    end
  end
rescue StandardError => error
  if @config.current_pid
    begin
      Process.kill('TERM', @config.current_pid)
    rescue StandardError
      # process may have exited
    end
    @config.current_pid = nil
  end

  Output::Iteration::Error.call(@loop, error)

  sleep 2

  Result.new(
    status: :error,
    agent_result: nil,
    duration_ms: now_ms - (iteration_start || now_ms), # this is so fucking wrong
    files_modified: [],
    completion_detected: false,
    errors: [error.message]
  )
end

#struggling? ⇒ Boolean

Returns true when the agent appears to be stuck. Should only be called after iteration > 2 for meaningful results.

Returns:

  • (Boolean) 


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# File 'lib/ralph/iteration.rb', line 152

def struggling?
  @struggle_indicators[:no_progress_iterations] >= 3 ||
    @struggle_indicators[:short_iterations] >= 3
end