Module: Ask::LLM::HTTP

Defined in:
lib/ask/llm/http.rb

Overview

Shared HTTP infrastructure for all providers.

Class Method Summary collapse

Class Method Details

.connection(base_url, headers: {}, request: {}) ⇒ Object

Build a Faraday connection for a provider.



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# File 'lib/ask/llm/http.rb', line 8

def self.connection(base_url, headers: {}, request: {})
  Faraday.new(url: base_url, headers: headers, request: request) do |f|
    f.request :json
    f.response :json, content_type: /\bjson$/
    f.adapter Faraday.default_adapter
  end
end

.extract_error_message(body, status) ⇒ Object

Extract a human-readable error message from various provider error formats.



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# File 'lib/ask/llm/http.rb', line 38

def self.extract_error_message(body, status)
  return nil unless body

  if body.respond_to?(:dig)
    body.dig("error", "message") ||
      body.dig("error", "msg") ||
      body.dig("error", "error") ||
      body["message"] ||
      body.to_s
  else
    body.to_s
  end
end

.map_error(status, body, provider:) ⇒ Object

Map an HTTP exception or error response to the appropriate Ask::Error.



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# File 'lib/ask/llm/http.rb', line 17

def self.map_error(status, body, provider:)
  body = JSON.parse(body) rescue body if body.is_a?(String)
  message = extract_error_message(body, status) || "HTTP #{status} from #{provider}"

  # Check for context length exceeded regardless of status code
  err_code = body.respond_to?(:dig) ? body.dig("error", "code") : nil
  if err_code == "context_length_exceeded"
    return Ask::ContextLengthExceeded.new("#{provider}: #{message}")
  end

  case status
  when 400 then Ask::ProviderError.new(message, status_code: status, response_body: body&.to_json)
  when 401, 403 then Ask::Unauthorized.new("#{provider}: #{message}")
  when 429 then Ask::RateLimitError.new("#{provider}: #{message}")
  when 500 then Ask::ServerError.new("#{provider}: #{message}")
  when 503 then Ask::ServiceUnavailable.new("#{provider}: #{message}")
  else Ask::ProviderError.new("#{provider}: #{message}", status_code: status, response_body: body&.to_json)
  end
end