Module: Legion::LLM::Call::Providers

Extended by:
Legion::Logging::Helper
Defined in:
lib/legion/llm/call/providers.rb

Constant Summary collapse

LEX_LLM_PROVIDER_REQUIRES = 
{
  ollama:        'legion/extensions/llm/ollama',
  vllm:          'legion/extensions/llm/vllm',
  anthropic:     'legion/extensions/llm/anthropic',
  openai:        'legion/extensions/llm/openai',
  gemini:        'legion/extensions/llm/gemini',
  mlx:           'legion/extensions/llm/mlx',
  bedrock:       'legion/extensions/llm/bedrock',
  azure_foundry: 'legion/extensions/llm/azure_foundry',
  vertex:        'legion/extensions/llm/vertex'
}.freeze
SAAS_PROVIDERS = 
%i[bedrock anthropic openai gemini azure].freeze

Class Method Summary collapse

Class Method Details

.apply_credential_to_config(provider, config, creds) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 347

def apply_credential_to_config(provider, config, creds)
  case provider
  when :bedrock
    set_config_value(config, :bearer_token, creds[:bearer_token]) if creds[:bearer_token]
    set_config_value(config, :api_key, creds[:api_key])           if creds[:api_key]
    set_config_value(config, :secret_key, creds[:secret_key])     if creds[:secret_key]
  when :anthropic, :openai, :gemini
    set_config_value(config, :api_key, creds[:api_key])
  end
end

.apply_provider_config(provider, config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 167

def apply_provider_config(provider, config)
  case provider.to_sym
  when :bedrock   then configure_bedrock(config)
  when :anthropic then configure_anthropic(config)
  when :openai    then configure_openai(config)
  when :gemini    then configure_gemini(config)
  when :azure     then configure_azure(config)
  when :ollama    then configure_ollama(config)
  when :vllm then configure_vllm(config)
  else
    log.warn "[llm][providers] unknown provider=#{provider}"
  end
end

.attempt_provider_call(provider, model) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 358

def attempt_provider_call(provider, model)
  start_time = Time.now
  result = probe_via_model_list(provider, model)
  elapsed = ((Time.now - start_time) * 1000).round

  case result
  when :auth_error
    log.warn "[llm][providers] health_check auth_failed provider=#{provider}"
    false
  when :model_missing
    log.warn "[llm][providers] health_check model_missing provider=#{provider} model=#{model} — provider ok, model unavailable"
    false
  when :unavailable
    log.warn "[llm][providers] health_check unavailable provider=#{provider} reason=native_provider_unregistered"
    false
  else
    log.info "[llm][providers] health_check ok provider=#{provider} model=#{model} elapsed_ms=#{elapsed}"
    true
  end
rescue StandardError => e
  log.warn "[llm][providers] health_check failed provider=#{provider} error=#{e.class}"
  handle_exception(e, level: :warn, operation: 'llm.providers.attempt_provider_call', provider: provider, model: model)
  false
end

.auto_enable_from_resolved_credentials ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 59

def auto_enable_from_resolved_credentials
  log.debug '[llm][providers] auto_enable_from_resolved_credentials.enter'
  providers_settings.each do |provider, config|
    next if config_enabled?(config)

    has_creds = credential_available_for?(provider, config)
    has_creds ||= broker_has_credential?(provider) unless has_creds

    next unless has_creds

    set_config_value(config, :enabled, true)
    log.info "[llm][providers] auto-enabled provider=#{provider} reason=credentials_found"
  end
end

.auto_register_lex_llm_providers ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 480

def auto_register_lex_llm_providers
  return unless load_lex_llm_base

  LEX_LLM_PROVIDER_REQUIRES.each_value { |feature| load_optional_feature(feature) }
  namespace = lex_llm_namespace
  return unless namespace

  namespace::Provider.providers.each do |provider_name, provider_class|
    next unless lex_llm_provider_ready?(namespace, provider_name, provider_class)

    adapter = Call::LexLLMAdapter.new(provider_name, provider_class)
    Call::Registry.register(provider_name, adapter)
    Call::Registry.register(:claude, adapter) if provider_name.to_sym == :anthropic
  end
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'llm.providers.auto_register_lex_llm')
end

.auto_register_providers ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 427

def auto_register_providers
  log.debug '[llm][providers] auto_register_providers.enter'
  try_register_native_provider(:claude, 'Legion::Extensions::Claude', 'Legion::Extensions::Claude::Runners::Messages') do |klass|
    Call::Registry.register(:claude, klass)
    Call::Registry.register(:anthropic, klass)
  end
  try_register_native_provider(:bedrock, 'Legion::Extensions::Bedrock', 'Legion::Extensions::Bedrock::Runners::Converse') do |klass|
    Call::Registry.register(:bedrock, klass)
  end
  try_register_native_provider(:openai, 'Legion::Extensions::Openai', 'Legion::Extensions::Openai::Runners::Chat') do |klass|
    Call::Registry.register(:openai, klass)
  end
  try_register_native_provider(:gemini, 'Legion::Extensions::Gemini', 'Legion::Extensions::Gemini::Runners::Generate') do |klass|
    Call::Registry.register(:gemini, klass)
  end
  auto_register_lex_llm_providers

  registered = Call::Registry.available
  if registered.any?
    log.info "[llm][providers] native registry registered=#{registered.join(', ')}"
  else
    log.debug '[llm][providers] no native lex-* providers registered'
  end
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'llm.providers.auto_register')
end

.broker_has_credential?(provider) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/llm/call/providers.rb', line 673

def broker_has_credential?(provider)
  return false unless defined?(Legion::Identity::Broker)

  case provider
  when :bedrock
    renewer = Legion::Identity::Broker.renewer_for(:aws)
    renewer&.provider.respond_to?(:current_credentials) && !renewer.provider.current_credentials.nil?
  else
    !Legion::Identity::Broker.token_for(
      provider,
      purpose: 'llm.provider.credential_available',
      context: { provider: provider }
    ).nil?
  end
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'llm.providers.broker_credential_available', provider: provider)
  false
end

.collect_credential_candidates(provider, config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 309

def collect_credential_candidates(provider, config)
  case provider
  when :bedrock
    candidates = []
    resolved_bearer = resolve_credential_value(config_value(config, :bearer_token))
    bearer_env = ENV.fetch('AWS_BEARER_TOKEN_BEDROCK', nil)
    claude_bearer = Call::ClaudeConfigLoader.bedrock_bearer_token
    candidates += [resolved_bearer, bearer_env, claude_bearer].compact.uniq.map { |t| { bearer_token: t } }
    api_key = resolve_credential_value(config_value(config, :api_key))
    secret = resolve_credential_value(config_value(config, :secret_key))
    candidates << { api_key: api_key, secret_key: secret } if api_key && secret
    candidates
  when :anthropic
    [
      resolve_credential_value(config_value(config, :api_key)),
      ENV.fetch('ANTHROPIC_API_KEY', nil)
    ].compact.uniq.map { |k| { api_key: k } }
  when :openai
    keys = [
      resolve_credential_value(config_value(config, :api_key)),
      ENV.fetch('OPENAI_API_KEY', nil),
      ENV.fetch('CODEX_API_KEY', nil),
      Call::CodexConfigLoader.read_token
    ].compact.uniq
    keys.map { |k| { api_key: k } }
  when :gemini
    [
      resolve_credential_value(config_value(config, :api_key)),
      ENV.fetch('GEMINI_API_KEY', nil)
    ].compact.uniq.map { |k| { api_key: k } }
  else
    []
  end
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'llm.providers.collect_credential_candidates', provider: provider)
  []
end

.config_enabled?(config) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/llm/call/providers.rb', line 722

def config_enabled?(config)
  config.is_a?(Hash) && config_value(config, :enabled) == true
end

.config_value(config, key, default = nil) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 726

def config_value(config, key, default = nil)
  return default unless config.respond_to?(:key?)

  string_key = key.to_s
  return config[string_key] if config.key?(string_key)

  config.key?(key) ? config[key] : default
end

.configure_anthropic(config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 211

def configure_anthropic(config)
  api_key = resolve_broker_credential(:anthropic) ||
            resolve_credential_value(config_value(config, :api_key)) ||
            ENV.fetch('ANTHROPIC_API_KEY', nil)
  return unless api_key

  set_config_value(config, :api_key, api_key)
  log.info "[llm][providers] prepared native anthropic base_url=#{config_value(config, :base_url).inspect}"
end

.configure_azure(config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 242

def configure_azure(config)
  api_base = config_value(config, :api_base)
  api_key = resolve_broker_credential(:azure) || resolve_credential_value(config_value(config, :api_key))
  auth_token = resolve_credential_value(config_value(config, :auth_token))
  return unless api_base && (api_key || auth_token)

  set_config_value(config, :api_key, api_key) if api_key
  set_config_value(config, :auth_token, auth_token) if auth_token
  log.info "[llm][providers] prepared native azure api_base=#{api_base}"
end

.configure_bedrock(config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 181

def configure_bedrock(config)
  resolved_api_key = resolve_credential_value(config_value(config, :api_key))
  resolved_secret_key = resolve_credential_value(config_value(config, :secret_key))
  resolved_session_token = resolve_credential_value(config_value(config, :session_token))
  has_sigv4 = resolved_api_key && resolved_secret_key
  has_bearer = resolve_credential_value(config_value(config, :bearer_token))
  set_config_value(config, :bearer_token, has_bearer) if has_bearer
  set_config_value(config, :api_key, resolved_api_key) if resolved_api_key
  set_config_value(config, :secret_key, resolved_secret_key) if resolved_secret_key
  set_config_value(config, :session_token, resolved_session_token) if resolved_session_token

  unless has_sigv4 || has_bearer
    broker_creds = resolve_broker_aws_credentials
    if broker_creds
      has_sigv4 = true
      config = config.merge(
        api_key:       broker_creds.access_key_id,
        secret_key:    broker_creds.secret_access_key,
        session_token: (broker_creds.session_token if broker_creds.respond_to?(:session_token))
      )
    end
  end

  set_config_value(config, :region, config_value(config, :region) || 'us-east-2')
  return unless has_sigv4 || has_bearer

  auth_mode = has_bearer ? 'bearer token' : 'SigV4'
  log.info "[llm][providers] prepared native bedrock region=#{config_value(config, :region)} auth=#{auth_mode}"
end

.configure_gemini(config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 232

def configure_gemini(config)
  api_key = resolve_broker_credential(:gemini) ||
            resolve_credential_value(config_value(config, :api_key)) ||
            ENV.fetch('GEMINI_API_KEY', nil)
  return unless api_key

  set_config_value(config, :api_key, api_key)
  log.info "[llm][providers] prepared native gemini base_url=#{config_value(config, :base_url).inspect}"
end

.configure_lex_llm_provider(namespace, provider_name, provider_class, provider_config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 574

def configure_lex_llm_provider(namespace, provider_name, provider_class, provider_config)
  Array(provider_class.configuration_options).each do |option|
    next unless namespace.config.respond_to?("#{option}=")

    value = lex_llm_provider_config_value(provider_name, option, provider_config)
    namespace.config.public_send("#{option}=", value) unless value.nil?
  end
end

.configure_ollama(config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 253

def configure_ollama(config)
  log.info "[llm][providers] prepared native ollama base_url=#{config_value(config, :base_url).inspect}"
end

.configure_openai(config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 221

def configure_openai(config)
  api_key = resolve_broker_credential(:openai) ||
            resolve_credential_value(config_value(config, :api_key)) ||
            ENV.fetch('OPENAI_API_KEY', nil) ||
            ENV.fetch('CODEX_API_KEY', nil)
  return unless api_key

  set_config_value(config, :api_key, api_key)
  log.info "[llm][providers] prepared native openai base_url=#{config_value(config, :base_url).inspect}"
end

.configure_providers ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 47

def configure_providers
  log.debug '[llm][providers] configure_providers.enter'
  auto_enable_from_resolved_credentials
  providers_settings.each do |provider, config|
    next unless config_enabled?(config)

    log.debug "[llm][providers] configure_providers applying provider=#{provider}"
    apply_provider_config(provider, config)
  end
  log.debug '[llm][providers] configure_providers.exit'
end

.configure_vllm(config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 257

def configure_vllm(config)
  base_url = config_value(config, :base_url) || 'http://localhost:8000/v1'
  api_key = resolve_credential_value(config_value(config, :api_key))

  set_config_value(config, :base_url, base_url)
  set_config_value(config, :api_key, api_key) if api_key
  log.info "[llm][providers] prepared native vllm base_url=#{base_url.inspect}"
end

.constant_defined_path?(path) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/llm/call/providers.rb', line 701

def constant_defined_path?(path)
  names = path.to_s.split('::')
  names.shift if names.first == ''
  owner = Object
  names.all? do |name|
    return false unless owner.const_defined?(name, false)

    owner = owner.const_get(name, false)
  end
end

.constant_get_path(path) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 712

def constant_get_path(path)
  path.to_s.split('::').reject(&:empty?).reduce(Object) do |owner, name|
    owner.const_get(name, false)
  end
end

.credential_available_for?(provider, config) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/llm/call/providers.rb', line 74

def credential_available_for?(provider, config)
  case provider.to_sym
  when :bedrock
    usable_setting?(config_value(config, :bearer_token)) ||
      env_present?('AWS_BEARER_TOKEN_BEDROCK') ||
      (usable_setting?(config_value(config, :api_key)) && usable_setting?(config_value(config, :secret_key)))
  when :anthropic
    usable_setting?(config_value(config, :api_key)) || env_present?('ANTHROPIC_API_KEY')
  when :openai
    usable_setting?(config_value(config, :api_key)) ||
      env_present?('OPENAI_API_KEY') ||
      env_present?('CODEX_API_KEY') ||
      !Call::CodexConfigLoader.read_token.nil?
  when :azure
    config_value(config, :api_base) &&
      (usable_setting?(config_value(config, :api_key)) || usable_setting?(config_value(config, :auth_token)))
  when :ollama
    ollama_running?(config)
  when :vllm
    vllm_running?(config)
  else
    usable_setting?(config_value(config, :api_key))
  end
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'llm.providers.credential_available_for', provider: provider)
  false
end

.credential_option?(option) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/llm/call/providers.rb', line 614

def credential_option?(option)
  option.to_s.match?(/(_api_key|_token|_secret)\z/)
end

.env_api_key(provider) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 618

def env_api_key(provider)
  env_keys = {
    anthropic: %w[ANTHROPIC_API_KEY],
    gemini:    %w[GEMINI_API_KEY],
    mlx:       %w[MLX_API_KEY],
    openai:    %w[OPENAI_API_KEY CODEX_API_KEY],
    vllm:      %w[VLLM_API_KEY]
  }.fetch(provider, [])

  env_keys.filter_map { |key| ENV.fetch(key, nil).to_s.strip }.find { |value| value != '' }
end

.env_present?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/llm/call/providers.rb', line 110

def env_present?(key)
  ENV.fetch(key, nil).to_s.strip != ''
end

.http_uri!(url, default_port:) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/legion/llm/call/providers.rb', line 156

def http_uri!(url, default_port:)
  require 'uri'

  uri = URI.parse(url.to_s)
  raise ArgumentError, "unsupported URL scheme #{uri.scheme.inspect}" unless %w[http https].include?(uri.scheme)
  raise ArgumentError, 'missing URL host' unless uri.host

  uri.port ||= default_port
  uri
end

.inject_anthropic_cache_control!(opts, provider) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 630

def inject_anthropic_cache_control!(opts, provider)
  resolved_provider = (provider || Legion::LLM::Settings.value(:default_provider))&.to_sym
  return unless resolved_provider == :anthropic

  caching_settings = Legion::LLM::Settings.value(:prompt_caching, default: {}) || {}
  return unless config_value(caching_settings, :enabled, true) != false

  min_tokens = config_value(caching_settings, :min_tokens) || 1024
  instructions = opts[:instructions]
  return unless instructions.is_a?(String) && instructions.length > min_tokens

  log.debug "[llm][providers] inject_anthropic_cache_control provider=#{resolved_provider} length=#{instructions.length}"
  opts[:instructions] = {
    content:       instructions,
    cache_control: { type: 'ephemeral' }
  }
end

.lex_llm_namespace ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 504

def lex_llm_namespace
  return ::Legion::Extensions::Llm if defined?(::Legion::Extensions::Llm::Provider)

  nil
end

.lex_llm_provider_config_value(provider_name, option, provider_config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 583

def lex_llm_provider_config_value(provider_name, option, provider_config)
  provider = provider_name.to_sym
  direct = config_value(provider_config, option)
  return resolve_credential_value(direct) if credential_option?(option) && !direct.nil?
  return direct unless direct.nil?

  short_key = option.to_s.delete_prefix("#{provider}_").to_sym
  short_value = config_value(provider_config, short_key)
  return resolve_credential_value(short_value) if credential_option?(option) && !short_value.nil?
  return short_value unless short_value.nil?

  case option.to_s
  when /_api_key\z/
    env_api_key(provider)
  when /_api_base\z/
    api_base = config_value(provider_config, :api_base) ||
               config_value(provider_config, :base_url) ||
               config_value(provider_config, :endpoint)
    normalize_lex_llm_api_base(provider, api_base)
  when /_version\z/
    config_value(provider_config, :version)
  end
end

.lex_llm_provider_ready?(namespace, provider_name, provider_class) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/llm/call/providers.rb', line 555

def lex_llm_provider_ready?(namespace, provider_name, provider_class)
  provider_config = config_value(providers_settings, provider_name.to_sym, {}) || {}
  configure_lex_llm_provider(namespace, provider_name, provider_class, provider_config)

  return true if config_enabled?(provider_config)
  return credential_available_for?(provider_name.to_sym, provider_config) if lex_llm_runtime_probe_required?(provider_name)

  provider_class.configured?(namespace.config)
rescue StandardError => e
  handle_exception(e, level: :warn, handled: true,
                      operation: 'llm.providers.lex_llm_provider_ready',
                      provider: provider_name)
  false
end

.lex_llm_runtime_probe_required?(provider_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/llm/call/providers.rb', line 570

def lex_llm_runtime_probe_required?(provider_name)
  %i[ollama vllm mlx].include?(provider_name.to_sym)
end

.llm_settings_lost?(snapshot) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/llm/call/providers.rb', line 536

def llm_settings_lost?(snapshot)
  return false unless snapshot.is_a?(Hash) && (snapshot.key?(:providers) || snapshot.key?('providers'))

  current = Legion::LLM::Settings.current_settings
  !current.is_a?(Hash) || !(current.key?(:providers) || current.key?('providers'))
rescue StandardError => e
  handle_exception(e, level: :debug, handled: true,
                      operation: 'llm.providers.llm_settings_lost')
  false
end

.load_lex_llm_base ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 498

def load_lex_llm_base
  load_optional_feature('legion/extensions/llm')
  load_optional_feature('legion/extensions/llm/provider') unless lex_llm_namespace
  !lex_llm_namespace.nil?
end

.load_optional_feature(feature) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 510

def load_optional_feature(feature)
  llm_settings = snapshot_llm_settings
  require feature
  restore_llm_settings(llm_settings) if llm_settings_lost?(llm_settings)
  true
rescue LoadError => e
  handle_exception(e, level: :warn, handled: true,
                      operation: 'llm.providers.optional_feature',
                      feature: feature)
  false
end

.log_available_providers ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 454

def log_available_providers
  enabled = providers_settings.select { |_, c| c.is_a?(Hash) && config_enabled?(c) }
  if enabled.empty?
    log.error '[llm][providers] no providers available — all failed health checks or disabled'
  else
    names = enabled.map { |name, c| "#{name}/#{config_value(c, :default_model) || 'auto'}" }
    log.info "[llm][providers] available providers=#{names.join(', ')}"
  end
end

.native_inventory_model_available?(provider, target_model) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/llm/call/providers.rb', line 464

def native_inventory_model_available?(provider, target_model)
  return true unless target_model
  return false unless defined?(Legion::LLM::Inventory)

  Legion::LLM::Inventory.offerings(provider_family: provider).any? do |offering|
    model_id = offering[:model].to_s
    model_id.include?(target_model.to_s) || target_model.to_s.include?(model_id) ||
      offering[:canonical_model_alias].to_s == target_model.to_s
  end
rescue StandardError => e
  handle_exception(e, level: :warn, handled: true,
                      operation: 'llm.providers.native_inventory_model_available',
                      provider: provider)
  false
end

.normalize_lex_llm_api_base(provider, value) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 607

def normalize_lex_llm_api_base(provider, value)
  return value if value.nil?
  return value unless %i[openai vllm].include?(provider.to_sym)

  value.to_s.sub(%r{/v1/?\z}, '')
end

.normalize_vllm_base_url(url) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 149

def normalize_vllm_base_url(url)
  base = url.to_s.dup
  base.chop! while base.end_with?('/')
  base = base[0...-3] if base.end_with?('/v1')
  base.empty? ? 'http://localhost:8000' : base
end

.ollama_running?(config) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/llm/call/providers.rb', line 114

def ollama_running?(config)
  require 'socket'
  url = config_value(config, :base_url) || 'http://localhost:11434'
  uri = http_uri!(url, default_port: 11_434)
  log.debug "[llm][providers] ollama_running? addr=#{uri.host} port=#{uri.port}"
  Socket.tcp(uri.host, uri.port, connect_timeout: 1).close
  true
rescue URI::InvalidURIError, ArgumentError => e
  handle_exception(e, level: :error, operation: 'llm.providers.ollama_running.config', base_url: url)
  false
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'llm.providers.ollama_running', base_url: url)
  false
end

.probe_provider_credentials(provider, model, config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 286

def probe_provider_credentials(provider, model, config)
  candidates = collect_credential_candidates(provider, config)

  if candidates.size <= 1
    ok = attempt_provider_call(provider, model)
    set_config_value(config, :enabled, false) unless ok
    return
  end

  working = candidates.find do |creds|
    apply_credential_to_config(provider, config, creds)
    attempt_provider_call(provider, model)
  end

  if working
    apply_credential_to_config(provider, config, working)
    log.info "[llm][providers] health_check ok provider=#{provider} model=#{model} credential=#{working.keys.join(',')}"
  else
    set_config_value(config, :enabled, false)
    log.warn "[llm][providers] disabled provider=#{provider} reason=all_credentials_failed"
  end
end

.probe_via_chat(provider, model) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 399

def probe_via_chat(provider, model)
  return :unavailable unless Call::Registry.available?(provider)

  native_inventory_model_available?(provider, model) ? :ok : :model_missing
end

.probe_via_model_list(provider, target_model) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 383

def probe_via_model_list(provider, target_model)
  return :unavailable unless Call::Registry.available?(provider)

  return :ok if target_model.nil?
  return :ok if native_inventory_model_available?(provider, target_model)

  adapter = Call::Registry.for(provider)
  offerings = adapter.respond_to?(:offerings) ? Array(adapter.offerings) : []
  return :ok if offerings.empty?

  :model_missing
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'llm.providers.probe_via_model_list', provider: provider)
  probe_via_chat(provider, target_model)
end

.providers_settings ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 718

def providers_settings
  Legion::LLM::Settings.value(:providers, default: {})
end

.recover_openai_with_codex ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 410

def recover_openai_with_codex
  openai_config = config_value(providers_settings, :openai)
  return unless openai_config.is_a?(Hash) && !config_enabled?(openai_config)

  token = Call::CodexConfigLoader.read_token
  return unless token

  log.info '[llm][providers] openai disabled — retrying with codex auth token'
  set_config_value(openai_config, :api_key, token)
  configure_openai(openai_config)
  set_config_value(openai_config, :enabled, true)
  ok = attempt_provider_call(:openai, config_value(openai_config, :default_model))
  set_config_value(openai_config, :enabled, false) unless ok
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'llm.providers.recover_openai_with_codex')
end

.recover_with_alternative_credentials ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 405

def recover_with_alternative_credentials
  log.debug '[llm][providers] recover_with_alternative_credentials.enter'
  recover_openai_with_codex
end

.resolve_broker_aws_credentials ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 661

def resolve_broker_aws_credentials
  return nil unless defined?(Legion::Identity::Broker)

  renewer = Legion::Identity::Broker.renewer_for(:aws)
  return renewer.provider.current_credentials if renewer&.provider.respond_to?(:current_credentials)

  nil
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'llm.providers.broker_resolve.aws')
  nil
end

.resolve_broker_credential(provider_name) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 648

def resolve_broker_credential(provider_name)
  return nil unless defined?(Legion::Identity::Broker)

  Legion::Identity::Broker.token_for(
    provider_name,
    purpose: 'llm.provider.credential',
    context: { provider: provider_name }
  )
rescue StandardError => e
  handle_exception(e, level: :warn, operation: "llm.providers.broker_resolve.#{provider_name}")
  nil
end

.resolve_credential_value(value) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 106

def resolve_credential_value(value)
  Call::ClaudeConfigLoader.resolve_setting_reference(value)
end

.resolve_llm_secrets ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 37

def resolve_llm_secrets
  log.debug '[llm][providers] resolve_llm_secrets.enter'
  return unless defined?(Legion::Settings::Resolver)

  Legion::Settings::Resolver.resolve_secrets!(Legion::LLM::Settings.current_settings)
  log.debug '[llm][providers] resolve_llm_secrets.exit'
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'llm.providers.resolve_llm_secrets')
end

.restore_llm_settings(snapshot) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 547

def restore_llm_settings(snapshot)
  Legion::Settings[:llm] = snapshot if defined?(Legion::Settings) && snapshot.is_a?(Hash)
  log.warn '[llm][providers] restored LLM settings after optional provider load changed settings backend'
rescue StandardError => e
  handle_exception(e, level: :warn, handled: true,
                      operation: 'llm.providers.restore_llm_settings')
end

.set_config_value(config, key, value) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 735

def set_config_value(config, key, value)
  if config.respond_to?(:key?) && config.key?(key.to_s)
    config[key.to_s] = value
  else
    config[key] = value
  end
end

.setup ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 13

def setup
  log.debug '[llm][providers] setup.enter'
  resolve_llm_secrets
  configure_providers
  auto_register_providers
  verify_providers
  log.debug '[llm][providers] setup.exit'
rescue StandardError => e
  handle_exception(e, level: :error, operation: 'llm.providers.setup')
  raise
end

.snapshot_llm_settings ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 522

def snapshot_llm_settings
  settings = nil
  settings = Legion::LLM::Settings.current_settings
  return nil unless settings.is_a?(Hash) && settings.any?

  Marshal.load(Marshal.dump(settings))
rescue TypeError
  settings&.dup
rescue StandardError => e
  handle_exception(e, level: :debug, handled: true,
                      operation: 'llm.providers.snapshot_llm_settings')
  nil
end

.try_register_native_provider(name, ext_const, runner_const) {|klass| ... } ⇒ Object

Yields:

  • (klass) 


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# File 'lib/legion/llm/call/providers.rb', line 692

def try_register_native_provider(name, ext_const, runner_const)
  log.debug "[llm][providers] try_register_native_provider name=#{name} ext=#{ext_const}"
  return unless constant_defined_path?(ext_const) && constant_defined_path?(runner_const)

  klass = constant_get_path(runner_const)
  yield klass
  log.debug "[llm][providers] registered native provider name=#{name}"
end

.usable_setting?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/llm/call/providers.rb', line 102

def usable_setting?(value)
  !resolve_credential_value(value).nil?
end

.verify_providers ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 268

def verify_providers
  log.debug '[llm][providers] verify_providers.enter'
  providers_settings.each do |provider, config|
    provider_key = provider.to_sym
    next unless config_enabled?(config)
    next unless SAAS_PROVIDERS.include?(provider_key)

    model = config_value(config, :default_model)
    next unless model

    probe_provider_credentials(provider_key, model, config)
  end

  recover_with_alternative_credentials

  log_available_providers
end

.vllm_running?(config) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/llm/call/providers.rb', line 129

def vllm_running?(config)
  require 'faraday'
  url = config_value(config, :base_url) || 'http://localhost:8000/v1'
  base = normalize_vllm_base_url(url)
  http_uri!(base, default_port: 8000)
  log.debug "[llm][providers] vllm_running? url=#{base}/health"
  response = Faraday.new(url: base) do |f|
    f.options.timeout = 2
    f.options.open_timeout = 2
    f.adapter Faraday.default_adapter
  end.get('/health')
  response.success?
rescue URI::InvalidURIError, ArgumentError => e
  handle_exception(e, level: :error, operation: 'llm.providers.vllm_running.config', base_url: url)
  false
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'llm.providers.vllm_running', base_url: url)
  false
end