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

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

Constant Summary collapse

SAAS_PROVIDERS = 
%i[bedrock anthropic openai gemini azure].freeze

Class Method Summary collapse

Class Method Details

.apply_provider_config(provider, config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 86

def apply_provider_config(provider, config)
  case provider
  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)
  else
    log.warn "[llm][providers] unknown provider=#{provider}"
  end
end

.auto_enable_from_resolved_credentials ⇒ Object 



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

def auto_enable_from_resolved_credentials
  log.debug '[llm][providers] auto_enable_from_resolved_credentials.enter'
  Legion::LLM.settings[:providers].each do |provider, config|
    next if config[:enabled]

    has_creds = case provider
                when :bedrock
                  config[:bearer_token] || (config[:api_key] && config[:secret_key])
                when :azure
                  config[:api_base] && (config[:api_key] || config[:auth_token])
                when :ollama
                  ollama_running?(config)
                else
                  config[:api_key]
                end

    has_creds ||= broker_has_credential?(provider) unless has_creds

    next unless has_creds

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

.auto_register_providers ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 248

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

  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 (ruby_llm mode)'
  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 313

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).nil?
  end
rescue StandardError => e
  handle_exception(e, level: :debug, operation: 'llm.providers.broker_credential_available', provider: provider)
  false
end

.configure_anthropic(config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 134

def configure_anthropic(config)
  api_key = resolve_broker_credential(:anthropic) || config[:api_key]
  return unless api_key

  RubyLLM.configure do |c|
    c.anthropic_api_key = api_key
    c.anthropic_api_base = config[:base_url] if config[:base_url]
  end
  log.info "[llm][providers] configured anthropic base_url=#{config[:base_url].inspect}"
end

.configure_azure(config) ⇒ Object 



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

def configure_azure(config)
  api_base = config[:api_base]
  api_key = resolve_broker_credential(:azure) || config[:api_key]
  auth_token = config[:auth_token]
  return unless api_base && (api_key || auth_token)

  RubyLLM.configure do |c|
    c.azure_api_base = api_base
    c.azure_api_key = api_key if api_key
    c.azure_ai_auth_token = auth_token if auth_token
  end
  log.info "[llm][providers] configured azure api_base=#{api_base}"
end

.configure_bedrock(config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 99

def configure_bedrock(config)
  has_sigv4 = config[:api_key] && config[:secret_key]
  has_bearer = config[:bearer_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

  return unless has_sigv4 || has_bearer

  require 'legion/llm/call/bedrock_auth' if has_bearer

  RubyLLM.configure do |c|
    if has_bearer
      c.bedrock_bearer_token = config[:bearer_token]
    else
      c.bedrock_api_key = config[:api_key]
      c.bedrock_secret_key = config[:secret_key]
      c.bedrock_session_token = config[:session_token] if config[:session_token]
    end
    c.bedrock_region = config[:region] || 'us-east-2'
  end

  auth_mode = has_bearer ? 'bearer token' : 'SigV4'
  log.info "[llm][providers] configured bedrock region=#{config[:region]} auth=#{auth_mode}"
end

.configure_gemini(config) ⇒ Object 



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

def configure_gemini(config)
  api_key = resolve_broker_credential(:gemini) || config[:api_key]
  return unless api_key

  RubyLLM.configure do |c|
    c.gemini_api_key = api_key
    c.gemini_api_base = config[:base_url] if config[:base_url]
  end
  log.info "[llm][providers] configured gemini base_url=#{config[:base_url].inspect}"
end

.configure_ollama(config) ⇒ Object 



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

def configure_ollama(config)
  RubyLLM.configure do |c|
    c.ollama_api_base = config[:base_url] if config[:base_url]
  end
  log.info "[llm][providers] configured ollama base_url=#{config[:base_url].inspect}"
end

.configure_openai(config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 145

def configure_openai(config)
  api_key = resolve_broker_credential(:openai) || config[:api_key]
  return unless api_key

  RubyLLM.configure do |c|
    c.openai_api_key = api_key
    c.openai_api_base = config[:base_url] if config[:base_url]
  end
  log.info "[llm][providers] configured openai base_url=#{config[:base_url].inspect}"
end

.configure_providers ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 35

def configure_providers
  log.debug '[llm][providers] configure_providers.enter'
  auto_enable_from_resolved_credentials
  Legion::LLM.settings[:providers].each do |provider, config|
    next unless config[:enabled]

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

.inject_anthropic_cache_control!(opts, provider) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 274

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

  caching_settings = Legion::LLM.settings[:prompt_caching] || {}
  return unless caching_settings[:enabled] != false

  min_tokens = 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

.ollama_running?(config) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/legion/llm/call/providers.rb', line 72

def ollama_running?(config)
  require 'socket'
  url = config[:base_url] || 'http://localhost:11434'
  host_part = url.gsub(%r{^https?://}, '').split(':')
  addr = host_part[0]
  port = (host_part[1] || '11434').to_i
  log.debug "[llm][providers] ollama_running? addr=#{addr} port=#{port}"
  Socket.tcp(addr, port, connect_timeout: 1).close
  true
rescue StandardError => e
  handle_exception(e, level: :debug, operation: 'llm.providers.ollama_running', base_url: url)
  false
end

.recover_openai_with_codex ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 218

def recover_openai_with_codex
  openai_config = Legion::LLM.settings.dig(:providers, :openai)
  return unless openai_config.is_a?(Hash) && !openai_config[:enabled]

  token = Call::CodexConfigLoader.read_token
  return unless token

  log.info '[llm][providers] openai disabled — trying codex auth token as fallback'
  openai_config[:api_key] = token
  configure_openai(openai_config)
  openai_config[:enabled] = true
  verify_single_provider(:openai, openai_config[:default_model], openai_config)
rescue StandardError => e
  handle_exception(e, level: :debug, 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 213

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 301

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: :debug, 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 292

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

  Legion::Identity::Broker.token_for(provider_name)
rescue StandardError => e
  handle_exception(e, level: :debug, operation: "llm.providers.broker_resolve.#{provider_name}")
  nil
end

.resolve_llm_secrets ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 25

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)
  log.debug '[llm][providers] resolve_llm_secrets.exit'
rescue StandardError => e
  handle_exception(e, level: :warn, operation: 'llm.providers.resolve_llm_secrets')
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
  verify_providers
  auto_register_providers
  log.debug '[llm][providers] setup.exit'
rescue StandardError => e
  handle_exception(e, level: :error, operation: 'llm.providers.setup')
  raise
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 328

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 Object.const_defined?(ext_const, false) && Object.const_defined?(runner_const, false)

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

.verify_providers ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 190

def verify_providers
  log.debug '[llm][providers] verify_providers.enter'
  Legion::LLM.settings[:providers].each do |provider, config|
    next unless config[:enabled]
    next unless SAAS_PROVIDERS.include?(provider)

    model = config[:default_model]
    next unless model

    verify_single_provider(provider, model, config)
  end

  recover_with_alternative_credentials

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

.verify_single_provider(provider, model, _config) ⇒ Object 



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# File 'lib/legion/llm/call/providers.rb', line 234

def verify_single_provider(provider, model, _config)
  start_time = Time.now
  RubyLLM.chat(model: model, provider: provider).ask('Respond with only the word: pong')
  elapsed = ((Time.now - start_time) * 1000).round
  log.info "[llm][providers] health_check ok provider=#{provider} model=#{model} elapsed_ms=#{elapsed}"
rescue RubyLLM::ModelNotFoundError => e
  handle_exception(e, level: :warn, operation: 'llm.providers.verify_single_provider', provider: provider, model: model)
rescue RubyLLM::ForbiddenError => e
  handle_exception(e, level: :debug, operation: 'llm.providers.verify_single_provider', provider: provider, model: model)
rescue StandardError => e
  log.warn "[llm][providers] provider unavailable provider=#{provider} error=#{e.class}"
  handle_exception(e, level: :debug, operation: 'llm.providers.verify_single_provider', provider: provider, model: model)
end