Class: Phronomy::Agent::ExecutionCoordinator

Inherits:
Object
  • Object
show all
Defined in:
lib/phronomy/agent/execution_coordinator.rb

Defined Under Namespace

Classes: AgentTerminalCommand, PrepFailureCommand, Prepared

Instance Method Summary collapse

Constructor Details

#initialize(agent) ⇒ ExecutionCoordinator

Returns a new instance of ExecutionCoordinator.



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# File 'lib/phronomy/agent/execution_coordinator.rb', line 12

def initialize(agent)
  @agent = agent
end

Instance Method Details

#admit_execution(raw_message, thread_id:) ⇒ Object

Raises:



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# File 'lib/phronomy/agent/execution_coordinator.rb', line 291

def admit_execution(raw_message, thread_id:)
  root = @agent.agent_root
  raise Phronomy::Error, "agent is closed: #{@agent.agent_id}" if root.lifecycle_status == :closed

  execution = next_root = nil
  @agent.persistence.transaction do |tx|
    input_ref = tx.contents.put_text(raw_message)
    input_record = JournalRecord.new(
      agent_id: @agent.agent_id,
      kind: :input_received,
      channel: :external,
      role: :user,
      content_ref: input_ref,
      correlation_id: thread_id,
      context_generation: root.transcript_generation,
      context_candidate: false
    )
    policy_descriptor = ContextPolicies::Default.new.descriptor
    execution = AgentExecution.start(
      agent_root: root,
      input_record: input_record,
      metadata: {
        "thread_id" => thread_id,
        "current_input_ref" => input_ref,
        "context_policy" => policy_descriptor.to_h
      }.compact
    )
    input_record = JournalRecord.from_h(
      input_record.to_h.merge("execution_id" => execution.execution_id)
    )
    execution = execution.with(
      execution_revision: 0,
      working_records: [input_record]
    )
    tx.executions.create_active(execution)
    next_root = root.with(
      agent_revision: root.agent_revision + 1,
      lifecycle_status: :active
    )
    tx.agents.save(
      root.agent_id,
      expected_revision: root.agent_revision,
      root: next_root
    )
  end
  [execution, next_root]
end

#commit_preparation_failure(execution, error) ⇒ Object 



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# File 'lib/phronomy/agent/execution_coordinator.rb', line 339

def commit_preparation_failure(execution, error)
  translated_error = translated(error)
  root = @agent.agent_root
  failed = next_root = appended = nil

  @agent.persistence.transaction do |tx|
    error_ref = tx.contents.put_json(
      "class" => translated_error.class.name,
      "message" => translated_error.message
    )
    audit_records = execution.working_records.map do |record|
      JournalRecord.from_h(
        record.to_h.merge("context_candidate" => false)
      )
    end
    terminal_status = terminal_status_for(translated_error)
    audit_records << JournalRecord.new(
      agent_id: @agent.agent_id,
      execution_id: execution.execution_id,
      kind: execution_terminal_kind(terminal_status),
      channel: :audit,
      content_ref: error_ref,
      context_generation: root.transcript_generation,
      context_candidate: false
    )
    appended = tx.journals.append(
      root.agent_id,
      expected_position: root.journal_position,
      records: audit_records
    )
    failed = execution.with(
      status: terminal_status,
      phase: terminal_status,
      working_records: [],
      error_ref: error_ref,
      terminal_reason: translated_error.class.name
    )
    tx.executions.save(
      execution.execution_id,
      expected_revision: execution.execution_revision,
      execution: failed
    )
    next_root = root.with(
      agent_revision: root.agent_revision + 1,
      journal_position: root.journal_position + appended.length,
      lifecycle_status: :idle
    )
    tx.agents.save(
      root.agent_id,
      expected_revision: root.agent_revision,
      root: next_root
    )
  end
  @agent.send(:_append_journal_records, appended)
  @agent.__replace_root(next_root)
  failed
end

#deliver_on_event_loop(command) ⇒ Object 



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# File 'lib/phronomy/agent/execution_coordinator.rb', line 475

def deliver_on_event_loop(command)
  case command
  when PrepFailureCommand
    callback_error = @agent.send(
      :_deliver_stream_event,
      command.on_event_listener,
      StreamEvent.new(
        type: terminal_event_type(command.error),
        payload: {error: command.error}
      )
    )
    settle_after_terminal(
      command.result_task,
      callback_error,
      terminal_event_type(command.error),
      nil,
      command.error
    )
  when AgentTerminalCommand
    deliver_execution_terminal(command)
  else
    raise Phronomy::Error, "unknown terminal command: #{command.class}"
  end
end

#finish(activation, result_task, invocation, error) ⇒ Object 



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# File 'lib/phronomy/agent/execution_coordinator.rb', line 447

def finish(activation, result_task, invocation, error)
  runtime = Phronomy::Runtime.instance
  operation = runtime.offload.submit(on_full: :raise) do
    compute_terminal(activation, invocation, error)
  end
  operation.on_complete do |outcome, commit_error|
    command = AgentTerminalCommand.new(
      self, activation, result_task, outcome, commit_error
    )
    posted = runtime.event_loop.post(
      Phronomy::Event.new(
        type: :agent_terminal_ready,
        target_id: Phronomy::EventLoop::SYSTEM_CHANNEL_ID,
        payload: {command: command}
      )
    )
    unless posted
      settle_without_listener(
        activation, result_task, outcome, commit_error
      )
    end
  end
rescue => caught
  fail_task(result_task, translated(caught))
end

#prepare(input, thread_id:, config:) ⇒ Object 



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# File 'lib/phronomy/agent/execution_coordinator.rb', line 194

def prepare(input, thread_id:, config:)
  raw_message = @agent.send(:extract_message, input)
  execution, active_root = admit_execution(
    raw_message,
    thread_id: thread_id
  )
  @agent.__replace_root(active_root)
  current_execution = execution

  begin
    effective_config = thread_id ? config.merge(thread_id: thread_id) : config
    @agent.send(
      :check_cancellation!,
      effective_config,
      "invocation cancelled before input filtering"
    )
    filtered_input = @agent.send(:run_input_filters!, input)
    @agent.send(
      :check_cancellation!,
      effective_config,
      "invocation cancelled before context assembly"
    )
    filtered_message = @agent.send(:extract_message, filtered_input)
    manifest = manifest_ref = active_execution = nil
    local_journal = @agent.send(:_journal_records_snapshot)

    @agent.persistence.transaction do |tx|
      assert_local_durable_base!(tx, active_root)
      filtered_ref = tx.contents.put_text(filtered_message)
      input_record = JournalRecord.new(
        agent_id: @agent.agent_id,
        execution_id: current_execution.execution_id,
        kind: :external_message,
        channel: :external,
        role: :user,
        content_ref: filtered_ref,
        correlation_id: thread_id,
        context_generation: active_root.transcript_generation,
        context_candidate: true
      )
      staged = current_execution.with(
        execution_revision: current_execution.execution_revision,
        working_records: current_execution.working_records + [input_record],
        metadata: current_execution.metadata.merge(
          "current_input_ref" => filtered_ref,
          "current_input_record_id" => input_record.record_id
        )
      )
      manifest, manifest_ref = ContextAssembler.new(
        agent: @agent,
        persistence: tx,
        policy: context_policy_for(staged),
        journal_records: local_journal
      ).build_initial(
        input: filtered_input,
        agent_root: active_root,
        execution: staged,
        config: effective_config,
        patch: @agent.send(
          :run_before_llm_input_hooks,
          call_sequence: 1,
          config: effective_config
        )
      )
      active_execution = staged.with(
        status: :active,
        phase: :calling_llm,
        metadata: staged.metadata.merge(
          "base_manifest_ref" => manifest_ref,
          "manifest_ref" => manifest_ref,
          "manifest_refs" => [manifest_ref]
        )
      )
      tx.executions.save(
        current_execution.execution_id,
        expected_revision: current_execution.execution_revision,
        execution: active_execution
      )
    end
    current_execution = active_execution

    projection = RubyLLMMaterializer.new(
      agent: @agent,
      persistence: @agent.persistence
    ).materialize(manifest: manifest, manifest_ref: manifest_ref)
    Phronomy::Agent::ExecutionCoordinator::Prepared.new(
      execution: active_execution,
      runtime_projection: projection,
      filtered_input: filtered_input,
      config: effective_config
    )
  rescue => error
    commit_preparation_failure(current_execution, error)
    raise
  end
end

#prepare_next_llm_call(activation) ⇒ Object

Persists facts from the previous Provider/Tool cycle and fixes the next Manifest from the current local Agent state. This runs on OffloadPool.



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# File 'lib/phronomy/agent/execution_coordinator.rb', line 128

def prepare_next_llm_call(activation)
  snapshot = activation.runtime_snapshot
  root = @agent.agent_root
  current = activation.execution
  journal_records = @agent.send(:_journal_records_snapshot)
  manifest = manifest_ref = updated = nil

  @agent.persistence.transaction do |tx|
    assert_local_durable_base!(tx, root)
    encoded_records, call_records = encode_runtime_records(
      activation,
      tx: tx,
      snapshot: snapshot,
      context_candidate: true,
      agent_root: root
    )
    staged = current.with(
      execution_revision: current.execution_revision,
      phase: :preparing_llm_call,
      working_records: current.working_records + encoded_records,
      llm_calls: current.llm_calls + call_records
    )
    invocation_config = activation.invocation&.config || {}
    patch = @agent.send(
      :run_before_llm_input_hooks,
      call_sequence: staged.llm_calls.length + 1,
      config: invocation_config
    )
    manifest, manifest_ref = ContextAssembler.new(
      agent: @agent,
      persistence: tx,
      policy: context_policy_for(staged),
      journal_records: journal_records
    ).build_followup(
      base_manifest: activation.base_manifest,
      agent_root: root,
      execution: staged,
      config: invocation_config,
      patch: patch
    )
    refs = Array(staged.metadata["manifest_refs"]) + [manifest_ref]
    updated = staged.with(
      phase: :calling_llm,
      metadata: staged.metadata.merge(
        "manifest_ref" => manifest_ref,
        "manifest_refs" => refs
      )
    )
    tx.executions.save(
      current.execution_id,
      expected_revision: current.execution_revision,
      execution: updated
    )
  end

  activation.replace_execution(updated)
  activation.acknowledge_runtime_snapshot(snapshot)

  projection = RubyLLMMaterializer.new(
    agent: @agent,
    persistence: @agent.persistence
  ).materialize(manifest: manifest, manifest_ref: manifest_ref)
  activation.replace_runtime_projection(projection)
  projection
end

#register(prepared, result_task, mode:, approval_policy:, approval_listener:, on_event:) ⇒ Object 



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# File 'lib/phronomy/agent/execution_coordinator.rb', line 397

def register(prepared, result_task, mode:, approval_policy:, approval_listener:, on_event:)
  activation = AgentExecutionActivation.new(
    execution: prepared.execution,
    agent: @agent,
    runtime_projection: prepared.runtime_projection,
    coordinator: self,
    application_listener: on_event
  )
  runtime = Phronomy::Runtime.instance
  runtime.__agent_activations.register(activation)
  event_loop = runtime.event_loop
  effective_config = prepared.config.merge(
    phronomy_activation: activation,
    phronomy_runtime_projection: prepared.runtime_projection,
    phronomy_filtered_input: prepared.filtered_input,
    execution_id: prepared.execution.execution_id
  )
  session = Agent::AgentInvocationSessionBuilder.build(
    agent: @agent,
    input: prepared.filtered_input,
    config: effective_config,
    approval_policy: approval_policy,
    approval_listener: approval_listener,
    mode: mode,
    on_event: ->(event) { activation.record_event(event) },
    runtime: runtime
  )
  activation.invocation = session.context
  activation.session = session
  source_task = Phronomy::Task.deferred(name: "#{result_task.name}-source")
  source_task.on_complete do |invocation, error|
    finish(
      activation,
      result_task,
      invocation || session.context,
      error
    )
  end
  event_loop.register(session, completion: source_task)
rescue => error
  activation ||= AgentExecutionActivation.new(
    execution: prepared.execution,
    agent: @agent,
    runtime_projection: prepared.runtime_projection,
    coordinator: self,
    application_listener: on_event
  )
  finish(activation, result_task, activation.invocation, error)
end

#resume(execution_id, approval_request_id:, approved:, config: {}) ⇒ Object 



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# File 'lib/phronomy/agent/execution_coordinator.rb', line 49

def resume(
  execution_id,
  approval_request_id:,
  approved:,
  config: {}
)
  result_task = Phronomy::Task.deferred(
    name: "agent-approval-resume:#{execution_id}"
  )
  runtime = Phronomy::Runtime.instance
  activation = runtime.__agent_activations.fetch(execution_id)
  unless activation
    fail_task(
      result_task,
      Phronomy::ExecutionRehydrationRequiredError.new(
        "no live activation for #{execution_id}; durable rehydration is required"
      )
    )
    return result_task
  end

  unless activation.agent.equal?(@agent) &&
      activation.execution.status == :suspended
    fail_task(
      result_task,
      ArgumentError.new(
        "execution is not a suspended execution of this agent: #{execution_id}"
      )
    )
    return result_task
  end

  preparation = runtime.offload.submit(on_full: :raise) do
    mark_resuming!(
      activation,
      approval_request_id: approval_request_id,
      approved: approved
    )
    activation
  end
  preparation.on_complete do |prepared_activation, error|
    if error
      fail_task(result_task, translated(error))
      next
    end

    begin
      start_resume(
        prepared_activation,
        result_task,
        approved: approved,
        config: config
      )
    rescue => start_error
      commit = runtime.offload.submit(on_full: :raise) do
        commit_failed(
          prepared_activation,
          prepared_activation.invocation,
          start_error
        )
      end
      commit.on_complete do |terminal, commit_error|
        if commit_error
          fail_task(result_task, commit_error)
        else
          runtime.__agent_activations.delete(execution_id)
          fail_task(result_task, terminal.fetch(:error))
        end
      end
    end
  end
  result_task
rescue => error
  fail_task(result_task, translated(error)) if result_task
  result_task
end

#start(input, thread_id: nil, config: {}, mode: :invoke, approval_policy: nil, approval_listener: nil, on_event: nil) ⇒ Object 



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# File 'lib/phronomy/agent/execution_coordinator.rb', line 16

def start(
  input, thread_id: nil, config: {}, mode: :invoke,
  approval_policy: nil, approval_listener: nil, on_event: nil
)
  result_task = Phronomy::Task.deferred(name: "agent-#{@agent.agent_id}-#{mode}")
  runtime = Phronomy::Runtime.instance
  preparation = runtime.offload.submit(on_full: :raise) do
    prepare(input, thread_id: thread_id, config: config)
  end
  preparation.on_complete do |prepared, error|
    if error
      post_prep_failure(runtime, on_event, result_task, translated(error))
    else
      register(
        prepared,
        result_task,
        mode: mode,
        approval_policy: approval_policy,
        approval_listener: approval_listener,
        on_event: on_event
      )
    end
  end
  result_task
rescue => error
  if defined?(runtime) && runtime
    post_prep_failure(runtime, on_event, result_task, translated(error))
  else
    fail_task(result_task, translated(error))
  end
  result_task
end