227 lines
6.5 KiB
Ruby
227 lines
6.5 KiB
Ruby
# frozen_string_literal: true
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module DiscourseAi
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module Completions
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module Endpoints
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class OpenAi < Base
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class << self
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def can_contact?(endpoint_name, model_name)
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return false unless endpoint_name == "open_ai"
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%w[
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gpt-3.5-turbo
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gpt-4
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gpt-3.5-turbo-16k
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gpt-4-32k
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gpt-4-turbo
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gpt-4-vision-preview
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].include?(model_name)
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end
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def dependant_setting_names
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%w[
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ai_openai_api_key
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ai_openai_gpt4_32k_url
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ai_openai_gpt4_turbo_url
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ai_openai_gpt4_url
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ai_openai_gpt4_url
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ai_openai_gpt35_16k_url
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ai_openai_gpt35_url
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]
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end
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def correctly_configured?(model_name)
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SiteSetting.ai_openai_api_key.present? && has_url?(model_name)
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end
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def has_url?(model)
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url =
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if model.include?("gpt-4")
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if model.include?("32k")
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SiteSetting.ai_openai_gpt4_32k_url
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else
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if model.include?("1106") || model.include?("turbo")
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SiteSetting.ai_openai_gpt4_turbo_url
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else
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SiteSetting.ai_openai_gpt4_url
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end
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end
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else
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if model.include?("16k")
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SiteSetting.ai_openai_gpt35_16k_url
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else
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SiteSetting.ai_openai_gpt35_url
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end
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end
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url.present?
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end
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def endpoint_name(model_name)
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"OpenAI - #{model_name}"
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end
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end
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def normalize_model_params(model_params)
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model_params = model_params.dup
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# max_tokens, temperature are already supported
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if model_params[:stop_sequences]
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model_params[:stop] = model_params.delete(:stop_sequences)
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end
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model_params
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end
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def default_options
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{ model: model }
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end
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def provider_id
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AiApiAuditLog::Provider::OpenAI
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end
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private
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def model_uri
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url =
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if model.include?("gpt-4")
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if model.include?("32k")
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SiteSetting.ai_openai_gpt4_32k_url
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else
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if model.include?("1106") || model.include?("turbo")
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SiteSetting.ai_openai_gpt4_turbo_url
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else
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SiteSetting.ai_openai_gpt4_url
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end
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end
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else
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if model.include?("16k")
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SiteSetting.ai_openai_gpt35_16k_url
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else
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SiteSetting.ai_openai_gpt35_url
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end
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end
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URI(url)
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end
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def prepare_payload(prompt, model_params, dialect)
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default_options
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.merge(model_params)
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.merge(messages: prompt)
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.tap do |payload|
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payload[:stream] = true if @streaming_mode
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payload[:tools] = dialect.tools if dialect.tools.present?
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end
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end
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def prepare_request(payload)
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headers =
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{ "Content-Type" => "application/json" }.tap do |h|
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if model_uri.host.include?("azure")
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h["api-key"] = SiteSetting.ai_openai_api_key
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else
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h["Authorization"] = "Bearer #{SiteSetting.ai_openai_api_key}"
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end
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if SiteSetting.ai_openai_organization.present?
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h["OpenAI-Organization"] = SiteSetting.ai_openai_organization
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end
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end
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Net::HTTP::Post.new(model_uri, headers).tap { |r| r.body = payload }
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end
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def extract_completion_from(response_raw)
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parsed = JSON.parse(response_raw, symbolize_names: true).dig(:choices, 0)
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# half a line sent here
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return if !parsed
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response_h = @streaming_mode ? parsed.dig(:delta) : parsed.dig(:message)
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@has_function_call ||= response_h.dig(:tool_calls).present?
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@has_function_call ? response_h.dig(:tool_calls, 0) : response_h.dig(:content)
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end
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def partials_from(decoded_chunk)
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decoded_chunk
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.split("\n")
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.map do |line|
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data = line.split("data: ", 2)[1]
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data == "[DONE]" ? nil : data
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end
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.compact
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end
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def extract_prompt_for_tokenizer(prompt)
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prompt.map { |message| message[:content] || message["content"] || "" }.join("\n")
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end
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def has_tool?(_response_data)
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@has_function_call
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end
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def native_tool_support?
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true
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end
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def add_to_function_buffer(function_buffer, partial: nil, payload: nil)
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if @streaming_mode
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return function_buffer if !partial
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else
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partial = payload
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end
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@args_buffer ||= +""
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f_name = partial.dig(:function, :name)
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@current_function ||= function_buffer.at("invoke")
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if f_name
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current_name = function_buffer.at("tool_name").content
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if current_name.blank?
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# first call
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else
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# we have a previous function, so we need to add a noop
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@args_buffer = +""
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@current_function =
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function_buffer.at("function_calls").add_child(
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Nokogiri::HTML5::DocumentFragment.parse(noop_function_call_text + "\n"),
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)
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end
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end
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@current_function.at("tool_name").content = f_name if f_name
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@current_function.at("tool_id").content = partial[:id] if partial[:id]
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args = partial.dig(:function, :arguments)
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# allow for SPACE within arguments
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if args && args != ""
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@args_buffer << args
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begin
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json_args = JSON.parse(@args_buffer, symbolize_names: true)
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argument_fragments =
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json_args.reduce(+"") do |memo, (arg_name, value)|
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memo << "\n<#{arg_name}>#{value}</#{arg_name}>"
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end
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argument_fragments << "\n"
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@current_function.at("parameters").children =
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Nokogiri::HTML5::DocumentFragment.parse(argument_fragments)
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rescue JSON::ParserError
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return function_buffer
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end
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end
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function_buffer
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end
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end
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end
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end
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end
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