Class: Legion::Service

Inherits:
Object
  • Object
show all
Extended by:
Logging::Helper
Includes:
Logging::Helper
Defined in:
lib/legion/service.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(transport: nil, cache: nil, data: nil, supervision: nil, extensions: nil, crypt: nil, api: nil, llm: nil, gaia: nil, log_level: nil, http_port: nil, role: nil) ⇒ Service

rubocop:disable Metrics/CyclomaticComplexity,Metrics/ParameterLists,Metrics/MethodLength,Metrics/PerceivedComplexity,Metrics/AbcSize



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# File 'lib/legion/service.rb', line 31

def initialize(transport: nil, cache: nil, data: nil, supervision: nil, extensions: nil, # rubocop:disable Metrics/CyclomaticComplexity,Metrics/ParameterLists,Metrics/MethodLength,Metrics/PerceivedComplexity,Metrics/AbcSize
               crypt: nil, api: nil, llm: nil, gaia: nil, log_level: nil, http_port: nil,
               role: nil)
  role_opts = Legion::ProcessRole.resolve(role || Legion::ProcessRole.current)
  transport = role_opts[:transport] if transport.nil?
  cache = role_opts[:cache] if cache.nil?
  data = role_opts[:data] if data.nil?
  supervision = role_opts[:supervision] if supervision.nil?
  extensions = role_opts[:extensions] if extensions.nil?
  crypt = role_opts[:crypt] if crypt.nil?
  api = role_opts[:api] if api.nil?
  llm = role_opts[:llm] if llm.nil?
  gaia = role_opts[:gaia] if gaia.nil?

  setup_logging(log_level: bootstrap_log_level(log_level))
  log.debug('Starting Legion::Service')
  setup_settings
  apply_cli_overrides(http_port: http_port)
  setup_compliance
  setup_local_mode
  reconfigure_logging(log_level)
  log.info("node name: #{Legion::Settings[:client][:name]}")

  if crypt
    require 'legion/crypt'
    Legion::Crypt.start
    Legion::Readiness.mark_ready(:crypt)
    setup_mtls_rotation
    # Phase 5: fetch short-lived bootstrap RMQ creds from Vault before transport connects.
    # Service is the authoritative gate (vault_connected? + dynamic_rmq_creds?).
    fetch_phase5_bootstrap_creds unless Legion::Mode.respond_to?(:lite?) && Legion::Mode.lite?
  end

  Legion::Settings.resolve_secrets!

  if transport
    setup_transport
    Legion::Readiness.mark_ready(:transport)
    setup_logging_transport
  end

  setup_dispatch

  if cache
    begin
      require 'legion/cache'
      Legion::Cache.setup
      Legion::Readiness.mark_ready(:cache)
    rescue StandardError => e
      handle_exception(e, level: :warn, operation: 'service.initialize.cache', fallback: 'cache_local')
      begin
        Legion::Cache::Local.setup
        log.info 'Legion::Cache::Local connected (fallback)'
      rescue StandardError => e2
        handle_exception(e2, level: :warn, operation: 'service.initialize.cache_local')
      end
      Legion::Readiness.mark_ready(:cache)
    end
  end

  if data
    begin
      setup_data
      Legion::Readiness.mark_ready(:data)
    rescue StandardError => e
      handle_exception(e, level: :warn, operation: 'service.initialize.data', fallback: 'data_local')
      begin
        require 'legion/data'
        Legion::Data::Local.setup if defined?(Legion::Data::Local)
        log.info 'Legion::Data::Local connected (fallback)'
      rescue StandardError => e2
        handle_exception(e2, level: :warn, operation: 'service.initialize.data_local')
      end
      Legion::Readiness.mark_ready(:data)
    end
  end

  if data
    setup_rbac
  else
    Legion::Readiness.mark_skipped(:rbac)
  end
  setup_cluster if data

  if llm
    begin
      setup_llm
      Legion::Readiness.mark_ready(:llm)
    rescue LoadError => e
      handle_exception(e, level: :debug, operation: 'service.initialize.llm', availability: 'missing')
      log.info 'Legion::LLM gem is not installed'
      Legion::Readiness.mark_skipped(:llm)
    rescue StandardError => e
      handle_exception(e, level: :warn, operation: 'service.initialize.llm')
      Legion::Readiness.mark_skipped(:llm)
    end
  else
    Legion::Readiness.mark_skipped(:llm)
  end

  begin
    setup_apollo
    Legion::Readiness.mark_ready(:apollo)
  rescue LoadError => e
    handle_exception(e, level: :debug, operation: 'service.initialize.apollo', availability: 'missing')
    log.info 'Legion::Apollo gem is not installed, starting without Apollo'
    Legion::Readiness.mark_skipped(:apollo)
  rescue StandardError => e
    handle_exception(e, level: :warn, operation: 'service.initialize.apollo')
    Legion::Readiness.mark_skipped(:apollo)
  end

  if gaia
    begin
      setup_gaia
      Legion::Readiness.mark_ready(:gaia)
    rescue LoadError => e
      handle_exception(e, level: :debug, operation: 'service.initialize.gaia', availability: 'missing')
      log.info 'Legion::Gaia gem is not installed'
      Legion::Readiness.mark_skipped(:gaia)
    rescue StandardError => e
      handle_exception(e, level: :warn, operation: 'service.initialize.gaia')
      Legion::Readiness.mark_skipped(:gaia)
    end
  else
    Legion::Readiness.mark_skipped(:gaia)
  end

  setup_telemetry
  setup_audit_archiver
  setup_safety_metrics
  setup_supervision if supervision

  require_relative 'identity' if File.exist?(File.expand_path('identity.rb', __dir__))

  if extensions
    load_extensions
    Legion::Readiness.mark_ready(:extensions)
    setup_generated_functions
  end

  # Identity resolution — after extensions so lex-identity-* providers are loaded
  db_available = defined?(Legion::Data) && Legion::Data.respond_to?(:connected?) && Legion::Data.connected?
  setup_identity if transport || db_available
  register_credential_providers if extensions && (transport || db_available)

  register_core_tools

  Legion::Gaia.registry&.rediscover if gaia && defined?(Legion::Gaia) && Legion::Gaia.started?

  Legion::Extensions::Agentic::Memory::Trace::Helpers::ErrorTracer.setup if defined?(Legion::Extensions::Agentic::Memory::Trace::Helpers::ErrorTracer)

  Legion::Crypt.cs if crypt

  setup_alerts
  setup_metrics
  setup_task_outcome_observer

  # Pre-warm MCP server in background; async embedding build
  Thread.new do
    require 'legion/mcp' if defined?(Legion::Settings) && !defined?(Legion::MCP)
    Legion::MCP.server if defined?(Legion::MCP) && Legion::MCP.respond_to?(:server)
    Legion::MCP::Server.populate_embedding_index if defined?(Legion::MCP::Server) && Legion::MCP::Server.respond_to?(:populate_embedding_index)
  rescue StandardError => e
    log.warn("MCP pre-warm failed: #{e.message}")
  end

  require 'sinatra/base'
  require 'legion/api/default_settings'
  api_settings = Legion::Settings[:api]
  @api_enabled = api && api_settings[:enabled]
  setup_apm if @api_enabled
  setup_api if @api_enabled
  setup_network_watchdog
  Legion::Settings[:client][:ready] = true
  Legion::Events.emit('service.ready')
end

Class Method Details

.log_privacy_mode_status ⇒ Object 



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# File 'lib/legion/service.rb', line 1037

def self.log_privacy_mode_status
  privacy = if Legion.const_defined?('Settings') && Legion::Settings.respond_to?(:enterprise_privacy?)
              Legion::Settings.enterprise_privacy?
            else
              ENV['LEGION_ENTERPRISE_PRIVACY'] == 'true'
            end

  message = if privacy
              'enterprise_data_privacy enabled: cloud LLM blocked, telemetry suppressed'
            else
              'enterprise_data_privacy disabled: all tiers available'
            end

  if Legion.const_defined?('Logging')
    log.info(message)
  else
    $stdout.puts "[Legion] #{message}"
  end
rescue StandardError => e
  handle_exception(e, level: :debug, operation: 'service.log_privacy_mode_status') if defined?(Legion::Logging)
  nil
end

Instance Method Details

#apply_cli_overrides(http_port: nil) ⇒ Object 



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# File 'lib/legion/service.rb', line 302

def apply_cli_overrides(http_port: nil)
  return unless http_port

  Legion::Settings[:api] ||= {}
  Legion::Settings[:api][:port] = http_port
  log.info "CLI override: API port set to #{http_port}"
end

#lite_mode? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/service.rb', line 232

def lite_mode?
  Legion::Mode.lite?
end

#llm_provider_gems ⇒ Object 



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# File 'lib/legion/service.rb', line 483

def llm_provider_gems
  specs = if defined?(Bundler)
            Bundler.load.specs.map { |s| s.respond_to?(:name) ? s.name : s[:name].to_s }
          else
            Gem::Specification.latest_specs.map(&:name)
          end
  specs.filter_map do |name|
    next unless name.start_with?('lex-llm-') && name != 'lex-llm-ledger'

    provider_name = name.delete_prefix('lex-llm-').tr('-', '_')
    require_path = "legion/extensions/llm/#{provider_name}"
    [name, require_path]
  end
end

#load_extensions ⇒ Object 



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# File 'lib/legion/service.rb', line 974

def load_extensions
  require 'legion/runner'
  Legion::Extensions.hook_extensions
end

#local_mode? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/service.rb', line 227

def local_mode?
  ENV['LEGION_LOCAL'] == 'true' ||
    Legion::Settings[:local_mode] == true
end

#modules ⇒ Object 



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# File 'lib/legion/service.rb', line 24

def modules
  base = [Legion::Crypt, Legion::Transport, Legion::Cache, Legion::Data, Legion::Supervision]
  base << Legion::LLM if defined?(Legion::LLM)
  base << Legion::Gaia if defined?(Legion::Gaia)
  base.freeze
end

#network_healthy? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/service.rb', line 1105

def network_healthy?
  return true if defined?(Legion::Transport::Connection) && Legion::Transport::Connection.lite_mode?

  checks = []
  checks << Legion::Transport::Connection.session_open? if Legion::Settings[:transport][:connected]
  if Legion::Settings[:data][:connected] && defined?(Legion::Data::Connection)
    checks << (Legion::Data::Connection.sequel&.test_connection rescue false) # rubocop:disable Style/RescueModifier
  end
  checks << Legion::Cache.connected? if Legion::Settings[:cache][:connected] && defined?(Legion::Cache)
  return true if checks.empty?

  checks.any?
rescue StandardError => e
  handle_exception(e, level: :debug, operation: 'service.network_healthy?')
  false
end

#preload_llm_providers ⇒ Object 



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# File 'lib/legion/service.rb', line 464

def preload_llm_providers
  require 'legion/extensions/llm'
  gems = llm_provider_gems
  gems.each do |gem_name, require_path|
    require require_path
    log.debug "[service] loaded #{gem_name}"
  rescue LoadError => e
    log.warn "[service] #{gem_name} failed to load: #{e.message}"
  rescue StandardError => e
    handle_exception(e, level: :warn, operation: "service.preload_llm_provider.#{gem_name}")
  end
  registered = defined?(Legion::LLM::Call::Registry) ? Legion::LLM::Call::Registry.all_instances : []
  log.info "[service] llm providers preloaded gems=#{gems.size} instances=#{registered.size}"
rescue LoadError => e
  handle_exception(e, level: :warn, operation: 'service.preload_llm_providers', availability: 'lex-llm not installed')
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.preload_llm_providers')
end

#reconfigure_logging(cli_level = nil) ⇒ Object 



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# File 'lib/legion/service.rb', line 315

def reconfigure_logging(cli_level = nil)
  ls = Legion::Settings[:logging] || {}
  level = if cli_level.respond_to?(:empty?) && cli_level.empty?
            nil
          else
            cli_level
          end
  level ||= ls[:level] || 'info'

  Legion::Logging.setup(
    level:       level,
    format:      (ls[:format] || 'text').to_sym,
    log_file:    ls[:log_file],
    log_stdout:  ls.fetch(:log_stdout, true),
    trace:       ls.fetch(:trace, true),
    async:       ls.fetch(:async, true),
    include_pid: ls.fetch(:include_pid, false),
    color:       true
  )
end

#register_core_tools ⇒ Object 



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# File 'lib/legion/service.rb', line 979

def register_core_tools
  require 'legion/tools'
  Legion::Tools.register_all
  Legion::Tools::Discovery.discover_and_register
  future = Legion::Tools::TriggerIndex.build_async!
  if future.respond_to?(:rescue)
    @trigger_index_build_future = future.rescue do |e|
      handle_exception(e, level: :warn, operation: 'service.register_core_tools.trigger_index_build')
      nil
    end
  end
  Legion::Tools::EmbeddingCache.setup

  log.info(
    "Tools registered: #{Legion::Tools::Registry.tools.size} always, " \
    "#{Legion::Tools::Registry.deferred_tools.size} deferred"
  )
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.register_core_tools')
end

#reload ⇒ Object

rubocop:disable Metrics/MethodLength, Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity



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# File 'lib/legion/service.rb', line 852

def reload # rubocop:disable Metrics/MethodLength, Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity
  return if @reloading

  @reloading = true
  log.info 'Legion::Service.reload was called'
  Legion::Settings[:client][:ready] = false

  shutdown_network_watchdog
  shutdown_api
  shutdown_apm

  if defined?(Legion::Gaia) && Legion::Gaia.respond_to?(:started?) && Legion::Gaia.started?
    shutdown_component('Gaia') { Legion::Gaia.shutdown }
    Legion::Readiness.mark_not_ready(:gaia)
  end

  Legion::Tools::Registry.clear if defined?(Legion::Tools::Registry)
  Legion::Tools::EmbeddingCache.clear_memory if defined?(Legion::Tools::EmbeddingCache) && Legion::Tools::EmbeddingCache.respond_to?(:clear_memory)

  ext_timeout = Legion::Settings.dig(:extensions, :shutdown_timeout) || 15
  shutdown_component('Extensions', timeout: ext_timeout) { Legion::Extensions.shutdown }
  Legion::Readiness.mark_not_ready(:extensions)

  shutdown_component('Data') { Legion::Data.shutdown }
  Legion::Readiness.mark_not_ready(:data)

  shutdown_component('Cache') { Legion::Cache.shutdown }
  Legion::Readiness.mark_not_ready(:cache)

  teardown_logging_transport
  shutdown_component('Transport') { Legion::Transport::Connection.shutdown }
  Legion::Readiness.mark_not_ready(:transport)

  shutdown_component('Crypt') { Legion::Crypt.shutdown if defined?(Legion::Crypt) }
  Legion::Readiness.mark_not_ready(:crypt)

  Legion::Readiness.wait_until_not_ready(:transport, :data, :cache, :crypt)

  Legion::Settings.load(force: true, config_dirs: Legion::Settings::Loader.default_directories.select { |d| Dir.exist?(d) })
  Legion::Readiness.mark_ready(:settings)

  Legion::Crypt.start if defined?(Legion::Crypt)
  Legion::Readiness.mark_ready(:crypt) if defined?(Legion::Crypt)
  # Phase 5: fetch bootstrap RMQ creds after Vault reconnects on reload.
  fetch_phase5_bootstrap_creds unless Legion::Mode.lite?

  # Resolve lease:// URIs with freshly loaded settings + new Vault token.
  Legion::Settings.resolve_secrets! if Legion::Settings.respond_to?(:resolve_secrets!)

  setup_transport
  Legion::Readiness.mark_ready(:transport)
  teardown_logging_transport
  setup_logging_transport

  Legion::Identity::Process.refresh_credentials if defined?(Legion::Identity::Process)

  require 'legion/cache' unless defined?(Legion::Cache)
  Legion::Cache.setup
  Legion::Readiness.mark_ready(:cache)

  setup_data
  Legion::Readiness.mark_ready(:data)

  if defined?(Legion::Rbac)
    setup_rbac
  else
    Legion::Readiness.mark_skipped(:rbac)
  end

  if defined?(Legion::LLM)
    setup_llm
  else
    Legion::Readiness.mark_skipped(:llm)
  end

  if defined?(Legion::Apollo)
    setup_apollo
    Legion::Readiness.mark_ready(:apollo)
  else
    Legion::Readiness.mark_skipped(:apollo)
  end

  if defined?(Legion::Gaia)
    setup_gaia
    Legion::Readiness.mark_ready(:gaia)
  else
    Legion::Readiness.mark_skipped(:gaia)
  end

  setup_supervision
  load_extensions
  Legion::Readiness.mark_ready(:extensions)

  # Phase 5: re-run identity resolution after extensions are loaded so that
  # any identity providers registered by lex-identity-* extensions are
  # available to the resolver (mirrors the boot-time ordering).
  Legion::Identity::Resolver.reset! if defined?(Legion::Identity::Resolver)
  setup_identity

  db_available = defined?(Legion::Data) && Legion::Data.respond_to?(:connected?) && Legion::Data.connected?
  transport_available = defined?(Legion::Transport::Connection) && Legion::Transport::Connection.respond_to?(:session_open?) && Legion::Transport::Connection.session_open?
  register_credential_providers if transport_available || db_available
  Legion::Extensions.flush_pending_registrations! if defined?(Legion::Extensions) && Legion::Extensions.respond_to?(:flush_pending_registrations!)

  register_core_tools

  Legion::Crypt.cs if defined?(Legion::Crypt)
  setup_apm if @api_enabled
  setup_api if @api_enabled

  if defined?(Legion::MCP)
    Legion::MCP.reset!
    Legion::MCP.server if Legion::MCP.respond_to?(:server)
  end
  setup_network_watchdog
  Legion::Settings[:client][:ready] = true
  Legion::Events.emit('service.ready')
  log.info 'Legion has been reloaded'
ensure
  @reloading = false
end

#setup_alerts ⇒ Object 



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# File 'lib/legion/service.rb', line 663

def setup_alerts
  alerts_settings = Legion::Settings[:alerts]
  enabled = alerts_settings.is_a?(Hash) ? alerts_settings[:enabled] : false
  return unless enabled

  require 'legion/alerts'
  Legion::Alerts.setup
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_alerts')
end

#setup_api ⇒ Object

rubocop:disable Metrics/MethodLength,Metrics/CyclomaticComplexity,Metrics/PerceivedComplexity



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# File 'lib/legion/service.rb', line 363

def setup_api # rubocop:disable Metrics/MethodLength,Metrics/CyclomaticComplexity,Metrics/PerceivedComplexity
  if @api_thread&.alive?
    log.warn 'API already running, skipping duplicate setup_api call'
    return
  end

  require 'legion/api'
  api_settings = Legion::Settings[:api]
  port = api_settings[:port]
  bind = api_settings[:bind]

  Legion::API.set :port, port
  Legion::API.set :bind, bind
  Legion::API.set :server, :puma
  Legion::API.set :environment, :production

  puma_cfg = api_settings[:puma]
  min_threads = puma_cfg[:min_threads]
  max_threads = puma_cfg[:max_threads]
  thread_spec = "#{min_threads}:#{max_threads}"
  puma_timeouts = {
    persistent_timeout: puma_cfg[:persistent_timeout],
    first_data_timeout: puma_cfg[:first_data_timeout]
  }.compact

  tls_cfg = build_api_tls_config(api_settings)
  if tls_cfg
    Legion::API.set :ssl_bind_options, tls_cfg
    Legion::API.set :server_settings, { quiet: true, Threads: thread_spec, **puma_timeouts,
                                        **ssl_server_settings(tls_cfg, bind, port) }
    log.info "Starting Legion API (TLS) on #{bind}:#{port}"
  else
    require 'puma'
    puma_log = ::Puma::LogWriter.new(StringIO.new, StringIO.new)
    Legion::API.set :server_settings, { log_writer: puma_log, quiet: true, Threads: thread_spec, **puma_timeouts }
    log.info "Starting Legion API on #{bind}:#{port}"
  end

  # Mount identity middleware — bridges legion.auth to legion.principal.
  # Identity MUST be mounted before RBAC so env['legion.rbac_principal'] is
  # populated before the RBAC middleware reads it.
  if defined?(Legion::Identity::Middleware)
    require_auth = Legion::Identity::Middleware.require_auth?(bind: bind, mode: Legion::Mode.current)
    Legion::API.use Legion::Identity::Middleware, require_auth: require_auth
  end

  # Mount RBAC middleware after Identity — reads env['legion.rbac_principal']
  # set by Identity::Middleware above. Only mount when a compatible RBAC
  # integration is present and enabled to avoid mixed-version request
  # failures.
  if defined?(Legion::Rbac::Middleware) &&
     defined?(Legion::Rbac::Principal) &&
     Legion::Rbac.respond_to?(:enabled?) &&
     Legion::Rbac.enabled?
    Legion::API.use Legion::Rbac::Middleware
  end

  @api_thread = Thread.new do
    retries = 0
    max_retries = api_settings[:bind_retries]
    retry_wait = api_settings[:bind_retry_wait]

    begin
      raise Errno::EADDRINUSE, "port #{port} already bound" if port_in_use?(bind, port)

      Legion::API.run!(traps: false)
    rescue Errno::EADDRINUSE
      retries += 1
      if retries <= max_retries
        log.warn "Port #{port} in use, retrying in #{retry_wait}s (attempt #{retries}/#{max_retries})"
        sleep retry_wait
        retry
      else
        log.error "Port #{port} still in use after #{max_retries} attempts, API disabled"
        Legion::Readiness.mark_not_ready(:api)
      end
    ensure
      Legion::Process.quit_flag&.make_true if !@shutdown && defined?(Legion::Process)
    end
  end
  Legion::Readiness.mark_ready(:api)
rescue LoadError => e
  handle_exception(e, level: :warn, operation: 'service.setup_api', dependency: 'api')
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_api')
end

#setup_apm ⇒ Object 



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# File 'lib/legion/service.rb', line 336

def setup_apm
  apm_settings = Legion::Settings.dig(:api, :elastic_apm) || {}
  return unless apm_settings[:enabled]

  require 'elastic-apm'

  config = build_apm_config(apm_settings)
  ElasticAPM.start(**config)
  @apm_running = true
  log.info "Elastic APM started: server=#{config[:server_url]} service=#{config[:service_name]}"
rescue LoadError => e
  handle_exception(e, level: :debug, operation: 'service.setup_apm', availability: 'missing')
  log.info 'elastic-apm gem is not installed, starting without APM'
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_apm')
end

#setup_apollo ⇒ Object 



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# File 'lib/legion/service.rb', line 511

def setup_apollo
  log.info 'Setting up Legion::Apollo'
  require 'legion/apollo'
  Legion::Apollo.start
  Legion::Apollo::Local.start if defined?(Legion::Apollo::Local)
  log.info 'Legion::Apollo started'
rescue LoadError => e
  handle_exception(e, level: :debug, operation: 'service.setup_apollo', availability: 'missing')
  log.info 'Legion::Apollo gem is not installed, starting without Apollo'
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_apollo')
end

#setup_audit_archiver ⇒ Object 



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# File 'lib/legion/service.rb', line 724

def setup_audit_archiver
  require_relative 'audit/archiver_actor'
  return unless Legion::Audit::ArchiverActor.enabled?

  @audit_archiver_thread = Thread.new do
    loop do
      Legion::Audit::ArchiverActor.new.run_archival
    rescue StandardError => e
      handle_exception(e, level: :error, operation: 'service.audit_archiver.run')
    ensure
      sleep Legion::Audit::ArchiverActor::INTERVAL_SECONDS
    end
  end
  @audit_archiver_thread.abort_on_exception = false
  log.info 'Audit archiver actor started'
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_audit_archiver')
end

#setup_cluster ⇒ Object 



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# File 'lib/legion/service.rb', line 263

def setup_cluster
  cluster_settings = Legion::Settings[:cluster]
  return unless cluster_settings.is_a?(Hash) && cluster_settings[:leader_election] == true

  require 'legion/cluster'
  return unless defined?(Legion::Cluster::Leader)

  @cluster_leader = Legion::Cluster::Leader.new
  @cluster_leader.start
  log.info('Cluster leader election started')
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_cluster')
end

#setup_compliance ⇒ Object 



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# File 'lib/legion/service.rb', line 293

def setup_compliance
  require 'legion/compliance'
  Legion::Compliance.setup
rescue LoadError => e
  handle_exception(e, level: :debug, operation: 'service.setup_compliance', availability: 'missing')
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_compliance')
end

#setup_data ⇒ Object 



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# File 'lib/legion/service.rb', line 236

def setup_data
  log.info 'Setting up Legion::Data'
  require 'legion/data'
  Legion::Settings.merge_settings(:data, Legion::Data::Settings.default)
  Legion::Data.setup
  log.info 'Legion::Data connected'
rescue LoadError => e
  handle_exception(e, level: :debug, operation: 'service.setup_data', availability: 'missing')
  log.info 'Legion::Data gem is not installed, please install it manually with gem install legion-data'
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_data')
end

#setup_dispatch ⇒ Object 



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# File 'lib/legion/service.rb', line 524

def setup_dispatch
  require 'legion/dispatch'
  Legion::Dispatch.dispatcher.start
  log.info "[Service] Dispatch started (strategy: #{Legion::Dispatch.dispatcher.class.name})"
end

#setup_gaia ⇒ Object 



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# File 'lib/legion/service.rb', line 498

def setup_gaia
  log.info 'Setting up Legion::Gaia'
  require 'legion/gaia'
  Legion::Settings.merge_settings('gaia', Legion::Gaia::Settings.default)
  Legion::Gaia.boot
  log.info 'Legion::Gaia booted'
rescue LoadError => e
  handle_exception(e, level: :debug, operation: 'service.setup_gaia', availability: 'missing')
  log.info 'Legion::Gaia gem is not installed, starting without cognitive layer'
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_gaia')
end

#setup_generated_functions ⇒ Object 



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# File 'lib/legion/service.rb', line 1000

def setup_generated_functions
  return unless defined?(Legion::Extensions::Codegen::Helpers::GeneratedRegistry)

  loaded = Legion::Extensions::Codegen::Helpers::GeneratedRegistry.load_on_boot
  log.info("Loaded #{loaded} generated functions") if loaded.to_i.positive?
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_generated_functions')
end

#setup_identity ⇒ Object

rubocop:disable Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity



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# File 'lib/legion/service.rb', line 538

def setup_identity # rubocop:disable Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity
  require_relative 'identity/process'
  require_relative 'identity/broker'
  require_relative 'identity/lease'
  require_relative 'identity/lease_renewer'
  require_relative 'identity/request'
  require_relative 'identity/middleware'

  # Resolve identity from available providers (Phase 4 adds real providers)
  require_relative 'identity' unless defined?(Legion::Identity::Resolver)

  Legion::Identity::Resolver.resolve!

  unless Legion::Identity::Resolver.resolved?
    Legion::Identity::Process.bind_fallback!
    log.info "[Identity] fallback identity: #{Legion::Identity::Process.canonical_name}"
  end

  # Phase 5: Swap from bootstrap RMQ credentials to identity-scoped credentials.
  # Gate on vault_connected? + dynamic_rmq_creds? — NOT on resolved? (fallback identity
  # still needs scoped creds via the mode-based role).
  if defined?(Legion::Crypt) &&
     Legion::Crypt.respond_to?(:vault_connected?) && Legion::Crypt.vault_connected? &&
     Legion::Crypt.respond_to?(:dynamic_rmq_creds?) && Legion::Crypt.dynamic_rmq_creds? &&
     Legion::Crypt.respond_to?(:swap_to_identity_creds) &&
     !Legion::Mode.lite?
    log.info '[Identity] swapping to identity-scoped RMQ credentials'
    Legion::Crypt.swap_to_identity_creds(mode: Legion::Mode.current)
  end

  # Re-resolve secrets for any identity-scoped lease:// refs (task 2.25)
  Legion::Settings.resolve_secrets! if Legion::Settings.respond_to?(:resolve_secrets!)

  # Fire-and-forget JWKS prefetch
  jwks_url = Legion::Settings.dig(:identity, :jwks_endpoint) || Legion::Settings.dig(:crypt, :jwt, :jwks_endpoint)
  if jwks_url && defined?(Legion::Crypt::JwksClient)
    Legion::Crypt::JwksClient.prefetch!(jwks_url)
    Legion::Crypt::JwksClient.start_background_refresh!(jwks_url)
  end

  log.info "[Identity] resolved=#{Legion::Identity::Process.resolved?} mode=#{Legion::Mode.current} queue_prefix=#{Legion::Identity::Process.queue_prefix}"
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_identity')
  Legion::Identity::Process.bind_fallback! if defined?(Legion::Identity::Process) && !Legion::Identity::Process.resolved?
ensure
  Legion::Readiness.mark_ready(:identity)
  begin
    Legion::Extensions.flush_pending_registrations! if defined?(Legion::Extensions) &&
                                                       Legion::Extensions.respond_to?(:flush_pending_registrations!)
  rescue StandardError => e
    handle_exception(e, level: :warn, operation: 'service.setup_identity.flush_pending_registrations')
  end
end

#setup_llm ⇒ Object 



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# File 'lib/legion/service.rb', line 450

def setup_llm
  log.info 'Setting up Legion::LLM'
  require 'legion/llm'
  Legion::Settings.merge_settings('llm', Legion::LLM::Settings.default)
  preload_llm_providers
  Legion::LLM.start
  log.info 'Legion::LLM started'
rescue LoadError => e
  handle_exception(e, level: :debug, operation: 'service.setup_llm', availability: 'missing')
  log.info 'Legion::LLM gem is not installed, starting without LLM support'
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_llm')
end

#setup_local_mode ⇒ Object 



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# File 'lib/legion/service.rb', line 209

def setup_local_mode
  if lite_mode?
    log.info 'Starting in lite mode (zero infrastructure)'
    Legion::Settings[:dev] = true
    require 'legion/transport/local'
    require 'legion/crypt/mock_vault' if defined?(Legion::Crypt)
    return
  end

  return unless local_mode?

  log.info 'Starting in local development mode'
  Legion::Settings[:dev] = true

  require 'legion/transport/local'
  require 'legion/crypt/mock_vault'
end

#setup_logging(log_level: 'info', **_opts) ⇒ Object 



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# File 'lib/legion/service.rb', line 310

def setup_logging(log_level: 'info', **_opts)
  require 'legion/logging'
  Legion::Logging.setup(log_level: log_level, level: log_level, trace: true)
end

#setup_logging_transport ⇒ Object

rubocop:disable Metrics/CyclomaticComplexity,Metrics/PerceivedComplexity



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# File 'lib/legion/service.rb', line 592

def setup_logging_transport # rubocop:disable Metrics/CyclomaticComplexity,Metrics/PerceivedComplexity
  return unless defined?(Legion::Transport::Connection)
  return unless Legion::Transport::Connection.session_open?

  lt_settings = begin
    Legion::Settings.dig(:logging, :transport) || {}
  rescue StandardError => e
    handle_exception(e, level: :debug, operation: 'service.setup_logging_transport.read_settings')
    {}
  end
  return unless lt_settings[:enabled] == true

  forward_logs = lt_settings.fetch(:forward_logs, true)
  forward_exceptions = lt_settings.fetch(:forward_exceptions, true)
  return unless forward_logs || forward_exceptions

  log_session = Legion::Transport::Connection.create_dedicated_session(name: 'legion-logging')
  @log_session = log_session
  log_channel = log_session.create_channel
  log_channel.prefetch(1)
  exchange = log_channel.topic('legion.logging', durable: true)

  if forward_logs
    Legion::Logging.log_writer = lambda { |event, routing_key:|
      begin
        next unless log_channel&.open?

        exchange.publish(Legion::JSON.dump(event), routing_key: routing_key)
      rescue StandardError
        nil
      end
    }
  end

  if forward_exceptions
    Legion::Logging.exception_writer = lambda { |event, routing_key:, headers:, properties:|
      begin
        next unless log_channel&.open?

        exchange.publish(
          Legion::JSON.dump(event),
          routing_key: routing_key,
          headers:     headers,
          **properties
        )
      rescue StandardError
        nil
      end
    }
  end

  modes = []
  modes << 'logs' if forward_logs
  modes << 'exceptions' if forward_exceptions
  log.info("Logging transport wired: #{modes.join(' + ')} (dedicated session)")
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_logging_transport')
  teardown_logging_transport
end

#setup_metrics ⇒ Object 



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# File 'lib/legion/service.rb', line 674

def setup_metrics
  require 'legion/metrics'
  Legion::Metrics.setup
  log.debug 'Legion::Metrics initialized'
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_metrics')
end

#setup_mtls_rotation ⇒ Object 



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# File 'lib/legion/service.rb', line 1009

def setup_mtls_rotation
  enabled = Legion::Settings[:security]&.dig(:mtls, :enabled)
  return unless enabled

  unless defined?(Legion::Crypt::CertRotation)
    require 'legion/crypt/mtls'
    require 'legion/crypt/cert_rotation'
  end
  return unless defined?(Legion::Crypt::CertRotation)

  @cert_rotation = Legion::Crypt::CertRotation.new
  @cert_rotation.start
  log.info '[mTLS] CertRotation started'
rescue LoadError => e
  handle_exception(e, level: :warn, operation: 'service.setup_mtls_rotation', availability: 'missing')
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_mtls_rotation')
end

#setup_network_watchdog ⇒ Object 



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# File 'lib/legion/service.rb', line 1068

def setup_network_watchdog
  return unless Legion::Settings.dig(:network, :watchdog, :enabled)

  @consecutive_failures = Concurrent::AtomicFixnum.new(0)
  threshold = Legion::Settings.dig(:network, :watchdog, :failure_threshold) || 5
  interval = Legion::Settings.dig(:network, :watchdog, :check_interval) || 15

  @network_watchdog = Concurrent::TimerTask.new(execution_interval: interval) do
    if network_healthy?
      prev = @consecutive_failures.value
      @consecutive_failures.value = 0
      if prev >= threshold
        log.info '[Watchdog] Network restored, triggering reload'
        Thread.new { Legion.reload } unless @reloading
      end
    else
      count = @consecutive_failures.increment
      log.warn "[Watchdog] Network check failed (#{count}/#{threshold})"
      if count == threshold
        log.error '[Watchdog] Network failure threshold reached, pausing actors'
        Legion::Extensions.pause_actors if Legion::Extensions.respond_to?(:pause_actors)
      end
    end
  rescue StandardError => e
    handle_exception(e, level: :debug, operation: 'service.network_watchdog.check')
  end
  @network_watchdog.execute
  log.info "[Watchdog] Network watchdog started (interval=#{interval}s, threshold=#{threshold})"
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_network_watchdog')
end

#setup_rbac ⇒ Object 



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# File 'lib/legion/service.rb', line 249

def setup_rbac
  require 'legion/rbac'
  Legion::Rbac.setup
  Legion::Readiness.mark_ready(:rbac)
  log.info 'Legion::Rbac loaded'
rescue LoadError => e
  handle_exception(e, level: :debug, operation: 'service.setup_rbac', availability: 'missing')
  log.debug 'Legion::Rbac gem is not installed, starting without RBAC'
  Legion::Readiness.mark_skipped(:rbac)
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_rbac')
  Legion::Readiness.mark_skipped(:rbac)
end

#setup_safety_metrics ⇒ Object 



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# File 'lib/legion/service.rb', line 748

def setup_safety_metrics
  require_relative 'telemetry/safety_metrics'
  Legion::Telemetry::SafetyMetrics.start
rescue LoadError => e
  handle_exception(e, level: :debug, operation: 'service.setup_safety_metrics', availability: 'missing')
rescue StandardError => e
  handle_exception(e, level: :debug, operation: 'service.setup_safety_metrics')
end

#setup_settings ⇒ Object 



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# File 'lib/legion/service.rb', line 277

def setup_settings
  require 'legion/settings'
  directories = Legion::Settings::Loader.default_directories
  existing = directories.select { |d| Dir.exist?(d) }
  log.info "Settings search directories: #{directories.inspect}"
  existing.each { |d| log.info "Settings: will load from #{d}" }
  if Legion::Settings.respond_to?(:loaded?) && Legion::Settings.loaded?
    log.info 'Legion::Settings already loaded, skipping reload'
  else
    Legion::Settings.load(config_dirs: existing)
  end
  Legion::Readiness.mark_ready(:settings)
  log.info('Legion::Settings Loaded')
  self.class.log_privacy_mode_status
end

#setup_supervision ⇒ Object 



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# File 'lib/legion/service.rb', line 757

def setup_supervision
  log.info 'Setting up Legion::Supervision'
  require 'legion/supervision'
  @supervision = Legion::Supervision.setup
  log.info 'Legion::Supervision started'
end

#setup_task_outcome_observer ⇒ Object 



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# File 'lib/legion/service.rb', line 682

def setup_task_outcome_observer
  require_relative 'task_outcome_observer'
  return unless Legion::TaskOutcomeObserver.enabled?

  Legion::TaskOutcomeObserver.setup
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_task_outcome_observer')
end

#setup_telemetry ⇒ Object 



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# File 'lib/legion/service.rb', line 691

def setup_telemetry
  return unless begin
    Legion::Settings.dig(:telemetry, :enabled)
  rescue StandardError => e
    handle_exception(e, level: :debug, operation: 'service.setup_telemetry.read_enabled')
    false
  end

  require 'opentelemetry/sdk'
  require 'opentelemetry-exporter-otlp'
  require_relative 'telemetry'

  endpoint = Legion::Settings.dig(:telemetry, :otlp_endpoint) || 'http://localhost:4318'
  service_name = "legion-#{Legion::Settings[:client][:name]}"

  OpenTelemetry::SDK.configure do |c|
    c.service_name = service_name
    c.service_version = Legion::VERSION
    c.add_span_processor(
      OpenTelemetry::SDK::Trace::Export::BatchSpanProcessor.new(
        OpenTelemetry::Exporter::OTLP::Exporter.new(endpoint: endpoint)
      )
    )
  end

  log.info "OpenTelemetry initialized: endpoint=#{endpoint} service=#{service_name}"
rescue LoadError => e
  handle_exception(e, level: :debug, operation: 'service.setup_telemetry', availability: 'missing')
  log.info 'OpenTelemetry gems not installed, starting without telemetry'
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.setup_telemetry', endpoint: endpoint, service_name: service_name)
end

#setup_transport ⇒ Object 



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# File 'lib/legion/service.rb', line 530

def setup_transport
  log.info 'Setting up Legion::Transport'
  require 'legion/transport'
  Legion::Settings.merge_settings('transport', Legion::Transport::Settings.default)
  Legion::Transport::Connection.setup
  log.info 'Legion::Transport connected'
end

#shutdown ⇒ Object

rubocop:disable Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity, Metrics/AbcSize, Metrics/MethodLength



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# File 'lib/legion/service.rb', line 775

def shutdown # rubocop:disable Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity, Metrics/AbcSize, Metrics/MethodLength
  log.info('Legion::Service.shutdown was called')
  @shutdown = true
  Legion::Settings[:client][:shutting_down] = true
  Legion::Events.emit('service.shutting_down')

  shutdown_network_watchdog
  shutdown_audit_archiver
  shutdown_api
  shutdown_apm

  Legion::Metrics.reset! if defined?(Legion::Metrics)

  if defined?(Legion::Gaia) && Legion::Gaia.respond_to?(:started?) && Legion::Gaia.started?
    shutdown_component('Gaia') { Legion::Gaia.shutdown }
    Legion::Readiness.mark_not_ready(:gaia)
  end

  if @cluster_leader
    @cluster_leader.stop
    @cluster_leader = nil
  end

  shutdown_component('Dispatch') { Legion::Dispatch.shutdown } if defined?(Legion::Dispatch)

  Legion::Tools::Registry.clear if defined?(Legion::Tools::Registry)

  ext_timeout = Legion::Settings.dig(:extensions, :shutdown_timeout) || 15
  shutdown_component('Extensions', timeout: ext_timeout) { Legion::Extensions.shutdown }
  Legion::Readiness.mark_not_ready(:extensions)

  if Legion::Settings[:llm]&.dig(:connected)
    shutdown_component('LLM') { Legion::LLM.shutdown }
    Legion::Readiness.mark_not_ready(:llm)
  end

  if defined?(Legion::Rbac) && Legion::Settings[:rbac]&.dig(:connected)
    shutdown_component('Rbac') { Legion::Rbac.shutdown }
    Legion::Readiness.mark_not_ready(:rbac)
  end

  shutdown_component('Data') { Legion::Data.shutdown } if Legion::Settings[:data][:connected]
  Legion::Readiness.mark_not_ready(:data)

  Legion::Leader.reset! if defined?(Legion::Leader)

  shutdown_component('Cache') { Legion::Cache.shutdown }
  Legion::Readiness.mark_not_ready(:cache)

  # Identity: cooperative shutdown of Broker (stops all LeaseRenewer threads)
  if defined?(Legion::Identity::Broker)
    shutdown_component('Identity::Broker') { Legion::Identity::Broker.shutdown }
    Legion::Readiness.mark_not_ready(:identity)
  end

  # Stop JWKS background refresh
  if defined?(Legion::Crypt::JwksClient) && Legion::Crypt::JwksClient.respond_to?(:stop_background_refresh!)
    Legion::Crypt::JwksClient.stop_background_refresh!
  end

  teardown_logging_transport
  shutdown_component('Transport') { Legion::Transport::Connection.shutdown }
  Legion::Readiness.mark_not_ready(:transport)

  shutdown_mtls_rotation
  # Phase 5: Revoke bootstrap RMQ lease on clean shutdown (defense-in-depth;
  # lease expires naturally if process crashes before identity swap).
  shutdown_component('Crypt bootstrap lease') do
    Legion::Crypt.revoke_bootstrap_lease if defined?(Legion::Crypt) && Legion::Crypt.respond_to?(:revoke_bootstrap_lease)
  end
  shutdown_component('Crypt') { Legion::Crypt.shutdown if defined?(Legion::Crypt) }
  Legion::Readiness.mark_not_ready(:crypt)

  Legion::Settings[:client][:ready] = false
  Legion::Events.emit('service.shutdown')
end

#shutdown_api ⇒ Object 



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# File 'lib/legion/service.rb', line 764

def shutdown_api
  return unless @api_thread

  Legion::API.quit! if defined?(Legion::API) && Legion::API.running?
  @api_thread.kill
  @api_thread = nil
  Legion::Readiness.mark_not_ready(:api)
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.shutdown_api')
end

#shutdown_apm ⇒ Object 



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# File 'lib/legion/service.rb', line 353

def shutdown_apm
  return unless @apm_running

  ElasticAPM.stop if defined?(ElasticAPM) && ElasticAPM.running?
  @apm_running = false
  log.info 'Elastic APM stopped'
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.shutdown_apm')
end

#shutdown_audit_archiver ⇒ Object 



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# File 'lib/legion/service.rb', line 743

def shutdown_audit_archiver
  @audit_archiver_thread&.kill
  @audit_archiver_thread = nil
end

#shutdown_component(name, timeout: 5) ⇒ Object 



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# File 'lib/legion/service.rb', line 1060

def shutdown_component(name, timeout: 5, &)
  Timeout.timeout(timeout, &)
rescue Timeout::Error
  log.warn "#{name} shutdown timed out after #{timeout}s, forcing"
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.shutdown_component', component: name, timeout: timeout)
end

#shutdown_mtls_rotation ⇒ Object 



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# File 'lib/legion/service.rb', line 1028

def shutdown_mtls_rotation
  return unless @cert_rotation

  @cert_rotation.stop
  @cert_rotation = nil
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'service.shutdown_mtls_rotation')
end

#shutdown_network_watchdog ⇒ Object 



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# File 'lib/legion/service.rb', line 1100

def shutdown_network_watchdog
  @network_watchdog&.shutdown
  @network_watchdog = nil
end

#teardown_logging_transport ⇒ Object 



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# File 'lib/legion/service.rb', line 652

def teardown_logging_transport
  Legion::Logging.log_writer = nil
  Legion::Logging.exception_writer = nil
  @log_session&.close if @log_session.respond_to?(:close) &&
                         (!@log_session.respond_to?(:open?) || @log_session.open?)
  @log_session = nil
rescue StandardError => e
  handle_exception(e, level: :debug, operation: 'service.teardown_logging_transport')
  nil
end