Class: Legion::Settings::Loader

Inherits:
Object
  • Object
show all
Includes:
Logging::Helper, OS
Defined in:
lib/legion/settings/loader.rb

Defined Under Namespace

Classes: Error

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from OS

linux?, mac?, #os, unix?, windows?

Constructor Details

#initialize ⇒ Loader

Returns a new instance of Loader.



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# File 'lib/legion/settings/loader.rb', line 39

def initialize
  @warnings = []
  @errors = []
  @settings = default_settings
  @indifferent_access = false
  @loaded_files = []
  @merged_modules = {}
  log.debug('Initialized Legion::Settings::Loader with default settings')
end

Instance Attribute Details

#errors ⇒ Object (readonly)

Returns the value of attribute errors.



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# File 'lib/legion/settings/loader.rb', line 20

def errors
  @errors
end

#loaded_files ⇒ Object (readonly)

Returns the value of attribute loaded_files.



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# File 'lib/legion/settings/loader.rb', line 20

def loaded_files
  @loaded_files
end

#merged_modules ⇒ Object (readonly)

Returns the value of attribute merged_modules.



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# File 'lib/legion/settings/loader.rb', line 20

def merged_modules
  @merged_modules
end

#settings ⇒ Object (readonly)

Returns the value of attribute settings.



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# File 'lib/legion/settings/loader.rb', line 20

def settings
  @settings
end

#warnings ⇒ Object (readonly)

Returns the value of attribute warnings.



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# File 'lib/legion/settings/loader.rb', line 20

def warnings
  @warnings
end

Class Method Details

.default_directories ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 22

def self.default_directories
  env_dirs = ENV.fetch('LEGION_SETTINGS_DIRS', nil)
  if env_dirs && !env_dirs.strip.empty?
    env_dirs_list = env_dirs.split(File::PATH_SEPARATOR).map(&:strip).reject(&:empty?).map { |p| File.expand_path(p) }
    return env_dirs_list unless env_dirs_list.empty?
  end

  dirs = [File.expand_path('~/.legionio/settings')]
  if OS.windows?
    appdata = ENV.fetch('APPDATA', nil)
    dirs << File.join(appdata, 'legionio', 'settings') if appdata && !appdata.strip.empty?
  else
    dirs << '/etc/legionio/settings'
  end
  dirs
end

Instance Method Details

#[](key) ⇒ Object

Direct key lookup — does NOT trigger indifferent_access! rebuild. This is the hot path called by every Settings access. Supports both symbol and string keys without converting the whole tree.



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# File 'lib/legion/settings/loader.rb', line 148

def [](key)
  result = @settings[key]
  return result unless result.nil? && key.is_a?(String)

  @settings[key.to_sym]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 167

def []=(key, value)
  @settings[key] = value
  mark_dirty!
end

#client_defaults ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 69

def client_defaults
  {
    hostname: system_hostname,
    address:  system_address,
    name:     "#{::Socket.gethostname.tr('.', '_')}.#{::Process.pid}",
    ready:    false
  }
end

#default_settings ⇒ Object

No more per-module defaults methods in the Loader. Tier 1 deps (json, logging) are called directly in default_settings. Tier 2 libraries (transport, cache, etc.) self-register via Legion::Settings.register_library when they load.



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# File 'lib/legion/settings/loader.rb', line 83

def default_settings
  {
    # --- Tier 1: gemspec dependencies (always installed with legion-settings) ---
    # legion-logging: always available, has Settings.default
    logging:                    Legion::Logging::Settings.default,
    # legion-json: always available, no Settings module yet — stub
    # until legion-json adds Legion::JSON::Settings.default
    json:                       Concurrent::Hash.new,

    # --- Structural: owned by legion-settings itself ---
    client:                     client_defaults,
    cluster:                    Concurrent::Hash.new,
    dns:                        dns_defaults,
    extensions:                 Concurrent::Hash[
      core:               %w[
        lex-node lex-tasker lex-scheduler lex-health lex-ping
        lex-telemetry lex-metering lex-log lex-audit
        lex-conditioner lex-transformer lex-exec lex-lex lex-codegen
      ],
      ai:                 %w[lex-claude lex-openai lex-gemini],
      gaia:               %w[lex-tick lex-mesh lex-apollo],
      categories:         {
        core:    { type: :list, tier: 1 },
        ai:      { type: :list, tier: 2 },
        gaia:    { type: :list, tier: 3 },
        agentic: { type: :prefix, tier: 4 }
      },
      blocked:            [],
      reserved_prefixes:  %w[core ai agentic gaia],
      reserved_words:     %w[transport cache crypt data settings json logging llm rbac legion],
      agentic:            { allowed: nil, blocked: [] },
      parallel_pool_size: 24
    ],
    reload:                     false,
    reloading:                  false,
    auto_install_missing_lex:   true,
    default_extension_settings: {},
    role:                       { profile: nil, extensions: [] },
    region:                     { current: nil, primary: nil, failover: nil, peers: [],
                                  default_affinity: 'any', data_residency: {} },
    process:                    { role: 'full' },

    # --- Tier 2: stubs for libraries that self-register via register_library ---
    # These ensure Settings[:key] returns a hash (not nil) before
    # the owning library loads. The library replaces these with its
    # full defaults when it calls Legion::Settings.register_library.
    absorbers:                  Concurrent::Hash.new,
    cache:                      Concurrent::Hash.new,
    crypt:                      Concurrent::Hash.new,
    data:                       Concurrent::Hash.new,
    transport:                  Concurrent::Hash.new
  }
end

#dig(*keys) ⇒ Object

Direct nested lookup — does NOT trigger indifferent_access! rebuild.



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# File 'lib/legion/settings/loader.rb', line 156

def dig(*keys)
  keys.reduce(self) do |current, key|
    return nil unless current.respond_to?(:[])

    value = current.is_a?(Loader) ? current[key] : (current[key] || current[key.to_s])
    return nil if value.nil? && !current.is_a?(Loader)

    value
  end
end

#dns_defaults ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 49

def dns_defaults
  resolv_config = read_resolv_config
  {
    fqdn:           nil, # lazy — resolved on first access via resolve_fqdn!
    default_domain: resolv_config[:search_domains]&.first,
    search_domains: resolv_config[:search_domains] || [],
    nameservers:    resolv_config[:nameservers] || [],
    bootstrap:      { enabled: true }
  }
end

#hexdigest ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 172

def hexdigest
  if @hexdigest && @indifferent_access
    @hexdigest
  else
    hash = case legion_service_name
           when 'client', 'rspec'
             to_hash
           else
             to_hash.reject do |key, _value|
               key.to_s == 'client'
             end
           end
    @hexdigest = Digest::SHA256.hexdigest(hash.to_s)
  end
end

#load_client_overrides ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 259

def load_client_overrides
  @settings[:client][:subscriptions] ||= []
  if @settings[:client][:subscriptions].is_a?(Array)
    @settings[:client][:subscriptions] << "client:#{@settings[:client][:name]}"
    @settings[:client][:subscriptions].uniq!
    mark_dirty!
  else
    log.warn('unable to apply legion client overrides, reason: client subscriptions is not an array')
  end
end

#load_directory(directory) ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 248

def load_directory(directory)
  path = directory.gsub(/\\(?=\S)/, '/')
  if File.readable?(path) && File.executable?(path)
    files = Dir.glob(File.join(path, '**', '*.json'))
    files.each { |file| load_file(file) }
    log.info("Settings: loaded directory #{path} (#{files.size} files)")
  else
    load_error('insufficient permissions for loading', directory: directory)
  end
end

#load_dns_bootstrap(cache_dir: nil) ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 193

def load_dns_bootstrap(cache_dir: nil)
  return if ENV['LEGION_DNS_BOOTSTRAP'] == 'false'

  domain = @settings.dig(:dns, :default_domain)
  return unless domain
  return unless @settings.dig(:dns, :bootstrap, :enabled)

  dir = cache_dir || File.expand_path('~/.legionio/settings')
  bootstrap = DnsBootstrap.new(default_domain: domain, cache_dir: dir)

  config = if bootstrap.cache_exists?
             load_dns_from_cache(bootstrap)
           else
             load_dns_first_boot(bootstrap)
           end

  return unless config

  merge_dns_config(config, bootstrap)
end

#load_env ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 188

def load_env
  load_api_env
  load_privacy_env
end

#load_file(file) ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 229

def load_file(file)
  log.debug("Trying to load file #{file}")
  if File.file?(file) && File.readable?(file)
    begin
      contents = read_config_file(file)
      config = contents.empty? ? {} : Legion::JSON.load(contents)
      @settings = deep_merge(@settings, config)
      mark_dirty!
      @loaded_files << file
      log.debug("Loaded settings file #{file}")
    rescue Legion::JSON::ParseError => e
      log.error("config file must be valid json: #{file}")
      log.error("  parse error: #{e.message}")
    end
  else
    log.warn("Config file does not exist or is not readable file:#{file}")
  end
end

#load_module_default(config) ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 222

def load_module_default(config)
  mod_name = config.keys.first
  log.debug("Loading module defaults: #{mod_name}")
  @settings = deep_merge(config, @settings)
  mark_dirty!
end

#load_module_settings(config) ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 214

def load_module_settings(config)
  mod_name = config.keys.first
  log.debug("Loading module settings: #{mod_name}")
  @merged_modules = deep_merge(@merged_modules, config)
  @settings = deep_merge(config, @settings)
  mark_dirty!
end

#load_overrides! ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 270

def load_overrides!
  load_client_overrides if %w[client rspec].include?(legion_service_name)
end

#mark_dirty! ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 391

def mark_dirty!
  @indifferent_access = false
  @hexdigest = nil
end

#resolve_fqdn! ⇒ String?

Lazily resolve the FQDN on first access instead of blocking at init.

Returns:

  • (String, nil) —

    the fully qualified domain name, or nil



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# File 'lib/legion/settings/loader.rb', line 63

def resolve_fqdn!
  return @settings[:dns][:fqdn] if @settings.dig(:dns, :fqdn)

  @settings[:dns][:fqdn] = detect_fqdn
end

#set_env! ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 274

def set_env!
  ENV['LEGION_LOADED_TEMPFILE'] = create_loaded_tempfile!
end

#to_hash ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 137

def to_hash
  unless @indifferent_access
    indifferent_access!
    @hexdigest = nil
  end
  @settings
end

#validate ⇒ Object 



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# File 'lib/legion/settings/loader.rb', line 278

def validate
  Legion::Settings.validate!
rescue Legion::Settings::ValidationError
  # errors are already collected in @errors
end