Module: PromptObjects::Server

Defined in:
lib/prompt_objects/server.rb,
lib/prompt_objects/server/app.rb,
lib/prompt_objects/server/api/routes.rb,
lib/prompt_objects/server/file_watcher.rb,
lib/prompt_objects/server/websocket_handler.rb

Defined Under Namespace

Modules: API Classes: App, FileWatcher, WebSocketHandler

Class Method Summary collapse

Class Method Details

.current_autonomous_config(runtime, po_name) ⇒ Object 



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# File 'lib/prompt_objects/server.rb', line 253

def self.current_autonomous_config(runtime, po_name)
  po = runtime.registry.get(po_name)
  return nil unless po.is_a?(PromptObject) && po.autonomous?

  config = po.autonomous_config
  config if config["start_on_boot"]
end

.handle_file_event(app, event, data, runtime: nil) ⇒ Object

Handle file change events and broadcast to connected clients.



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# File 'lib/prompt_objects/server.rb', line 312

def self.handle_file_event(app, event, data, runtime: nil)
  case event
  when :po_added
    po = data
    app.broadcast(
      type: "po_added",
      payload: {
        name: po.name,
        state: po.to_state_hash(registry: runtime&.registry)
      }
    )
    puts "Broadcast: PO added - #{po.name}"

  when :po_modified
    po = data
    app.broadcast(
      type: "po_modified",
      payload: {
        name: po.name,
        state: po.to_state_hash(registry: runtime&.registry)
      }
    )
    puts "Broadcast: PO modified - #{po.name}"

  when :po_removed
    app.broadcast(
      type: "po_removed",
      payload: { name: data[:name] }
    )
    puts "Broadcast: PO removed - #{data[:name]}"
  end
end

.read_server_file(env_path) ⇒ Hash?

Read a .server file to discover a running server. Returns nil if no server is running or the file is stale.

Parameters:

  • env_path (String) —

    Path to the environment directory

Returns:

  • (Hash, nil) —

    Server info with :host, :port, :pid



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# File 'lib/prompt_objects/server.rb', line 292

def self.read_server_file(env_path)
  server_file = File.join(env_path, ".server")
  return nil unless File.exist?(server_file)

  data = JSON.parse(File.read(server_file), symbolize_names: true)

  # Check if the process is still running
  begin
    Process.kill(0, data[:pid])
    data
  rescue Errno::ESRCH
    # Process is dead, clean up stale file
    File.delete(server_file)
    nil
  end
rescue StandardError
  nil
end

.remove_server_file(path) ⇒ Object

Remove the .server file on shutdown.

Parameters:

  • path (String) —

    Path to the .server file



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# File 'lib/prompt_objects/server.rb', line 282

def self.remove_server_file(path)
  File.delete(path) if path && File.exist?(path)
rescue StandardError
  # Ignore cleanup errors
end

.schedule_autonomous_pos(task, runtime, app) ⇒ Object

Schedule Async tasks for autonomous POs that think on their own interval. Uses runtime.inject_message — the same code path as human messages, service events, and webhooks.

Parameters:

  • task (Async::Task) —

    The parent Async task

  • runtime (Runtime) —

    The environment runtime

  • app (App) —

    The server app (unused — broadcasting goes through runtime)



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# File 'lib/prompt_objects/server.rb', line 146

def self.schedule_autonomous_pos(task, runtime, app)
  runtime.registry.prompt_objects.each do |po|
    next unless po.autonomous?

    auto_config = po.autonomous_config
    next unless auto_config["start_on_boot"]

    po_name = po.name

    task.async do |subtask|
      puts "Autonomous PO scheduled: #{po_name} (every #{auto_config['interval']}s, " \
           "initial delay #{auto_config['initial_delay']}s)"

      waiting_state = nil
      loop do
        current = current_autonomous_config(runtime, po_name)
        break unless current && current["wait_for_human"] && !runtime.human_message_received?(po_name)

        current_waiting_state = [current["interval"], current["initial_delay"]]
        if current_waiting_state != waiting_state
          runtime.update_autonomous_schedule(
            po_name,
            status: "waiting_for_human",
            interval: current["interval"],
            initial_delay: current["initial_delay"],
            wait_for_human: true,
            next_run_at: nil
          )
          waiting_state = current_waiting_state
        end
        subtask.sleep 0.1
      end

      next unless wait_for_live_autonomous_delay(
        subtask, runtime, po_name, duration_key: "initial_delay"
      )

      loop do
        current = current_autonomous_config(runtime, po_name)
        break unless current

        begin
          runtime.update_autonomous_schedule(
            po_name,
            status: "running",
            next_run_at: nil
          )
          # Autonomous work uses its own coalesced, summary-retention thread.
          execution = lambda do
            runtime.inject_message(
              target_po: po_name,
              content: current["message"].strip,
              from_source: "timer:#{po_name}"
            )
          end
          if app.respond_to?(:blocking_executor)
            app.blocking_executor.call(&execution)
          else
            execution.call
          end
        rescue => e
          warn "Autonomous PO #{po_name} error: #{e.class}: #{e.message}"
        end

        break unless wait_for_live_autonomous_delay(
          subtask, runtime, po_name, duration_key: "interval"
        )
      end
    end
  end
end

.schedule_service_ticks(task, runtime) ⇒ Object

Schedule Async tick tasks for services that have an interval. Runs inside the Async event loop so ticks cooperate with Falcon.

Parameters:

  • task (Async::Task) —

    The parent Async task

  • runtime (Runtime) —

    The environment runtime



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# File 'lib/prompt_objects/server.rb', line 124

def self.schedule_service_ticks(task, runtime)
  runtime.services.each do |service|
    next unless service.interval

    task.async do |subtask|
      puts "Service tick loop started: #{service.name} (every #{service.interval}s)"
      loop do
        subtask.sleep service.interval
        service.tick
      rescue => e
        warn "Service #{service.name} tick error: #{e.class}: #{e.message}"
      end
    end
  end
end

.start(runtime:, host: "localhost", port: 3000, env_path: nil) ⇒ Object

Start the server for a given runtime.

Parameters:

  • runtime (Runtime) —

    The runtime/environment to serve

  • host (String) (defaults to: "localhost") —

    Host to bind to

  • port (Integer) (defaults to: 3000) —

    Port to listen on

  • env_path (String) (defaults to: nil) —

    Path to the environment directory



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# File 'lib/prompt_objects/server.rb', line 15

def self.start(runtime:, host: "localhost", port: 3000, env_path: nil)
  require "async"
  require "async/http/endpoint"
  require "falcon"

  app = App.new(runtime)
  url = "http://#{host}:#{port}"

  puts "PromptObjects Server"
  puts "===================="
  puts "Environment: #{runtime.name}"
  puts "URL: #{url}"
  puts ""
  puts "Prompt Objects:"
  runtime.registry.prompt_objects.each do |po|
    auto = po.autonomous? ? " (autonomous: #{po.autonomous_config['interval']}s)" : ""
    puts "  - #{po.name}: #{po.description}#{auto}"
  end
  puts ""
  if runtime.services.any?
    puts "Services:"
    runtime.services.each do |s|
      puts "  - #{s.name}: #{s.description || '(no description)'}"
    end
    puts ""
  end
  puts "Press Ctrl+C to stop"
  puts ""

  # Register callback for immediate PO registration notifications
  # This fires when create_capability creates a new PO programmatically
  runtime.on_po_registered = ->(po) {
    app.broadcast(
      type: "po_added",
      payload: {
        name: po.name,
        state: po.to_state_hash(registry: runtime.registry)
      }
    )
    puts "Broadcast: PO registered - #{po.name}"
  }

  # Register callback for PO modification notifications
  # This fires when capabilities are added/removed programmatically
  runtime.on_po_modified = ->(po) {
    app.broadcast(
      type: "po_modified",
      payload: {
        name: po.name,
        state: po.to_state_hash(registry: runtime.registry)
      }
    )
    puts "Broadcast: PO modified (programmatic) - #{po.name}"
  }

  # Register broadcast callback for services to push WebSocket messages
  runtime.on_broadcast = ->(message) { app.broadcast(message) }

  # Start file watcher for live updates (manual file edits)
  file_watcher = nil
  if env_path
    file_watcher = FileWatcher.new(runtime: runtime, env_path: env_path)
    file_watcher.subscribe do |event, data|
      handle_file_event(app, event, data, runtime: runtime)
    end
    file_watcher.start
  end

  # Start environment services (calls service.start, no scheduling yet)
  runtime.start_services if runtime.services.any?

  # Start environment connectors (Discord/Slack/webhook bridges)
  runtime.start_connectors if runtime.connectors.any?

  # Write .server file for CLI discovery
  server_file = write_server_file(env_path, host: host, port: port) if env_path

  Async do |task|
    endpoint = Async::HTTP::Endpoint.parse(url)

    server = Falcon::Server.new(
      Falcon::Server.middleware(app),
      endpoint
    )

    # Schedule service tick loops as Async tasks.
    # These cooperate with Falcon's event loop instead of fighting it.
    schedule_service_ticks(task, runtime)

    # Schedule autonomous PO execution as Async tasks.
    schedule_autonomous_pos(task, runtime, app)

    task.async do
      server.run
    end
  ensure
    runtime.stop_connectors if runtime.connectors.any?
    runtime.stop_services if runtime.services.any?
    runtime.shutdown_execution(wait: false)
    file_watcher&.stop
    app.close
    remove_server_file(server_file) if server_file
  end
end

.wait_for_live_autonomous_delay(subtask, runtime, po_name, duration_key:) ⇒ Object

Sleep until the PO's current autonomous deadline while re-reading its frontmatter. In-app and external source edits can therefore change the message used by the next tick and move an interval deadline without a server restart.



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# File 'lib/prompt_objects/server.rb', line 222

def self.wait_for_live_autonomous_delay(subtask, runtime, po_name, duration_key:)
  started_at = Process.clock_gettime(Process::CLOCK_MONOTONIC)
  published_deadline = nil

  loop do
    config = current_autonomous_config(runtime, po_name)
    return false unless config

    duration = [config[duration_key].to_f, 0].max
    elapsed = Process.clock_gettime(Process::CLOCK_MONOTONIC) - started_at
    remaining = duration - elapsed
    return true if remaining <= 0

    deadline = Time.now.utc + remaining
    deadline_key = [duration, config["interval"], config["initial_delay"], config["wait_for_human"]]
    if deadline_key != published_deadline
      runtime.update_autonomous_schedule(
        po_name,
        status: "scheduled",
        interval: config["interval"],
        initial_delay: config["initial_delay"],
        wait_for_human: config["wait_for_human"],
        next_run_at: deadline.iso8601(6)
      )
      published_deadline = deadline_key
    end

    subtask.sleep([remaining, 0.1].min)
  end
end

.write_server_file(env_path, host:, port:) ⇒ String

Write a .server file so CLI clients can discover the running server.

Parameters:

  • env_path (String) —

    Path to the environment directory

  • host (String) —

    Server host

  • port (Integer) —

    Server port

Returns:

  • (String) —

    Path to the .server file



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# File 'lib/prompt_objects/server.rb', line 266

def self.write_server_file(env_path, host:, port:)
  return nil unless env_path

  server_file = File.join(env_path, ".server")
  data = {
    pid: Process.pid,
    host: host,
    port: port,
    started_at: Time.now.iso8601
  }
  File.write(server_file, JSON.generate(data))
  server_file
end