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0634b85a81
* UX: Validations to Llm-backed features (except AI Bot) This change is part of an ongoing effort to prevent enabling a broken feature due to lack of configuration. We also want to explicit which provider we are going to use. For example, Claude models are available through AWS Bedrock and Anthropic, but the configuration differs. Validations are: * You must choose a model before enabling the feature. * You must turn off the feature before setting the model to blank. * You must configure each model settings before being able to select it. * Add provider name to summarization options * vLLM can technically support same models as HF * Check we can talk to the selected model * Check for Bedrock instead of anthropic as a site could have both creds setup
101 lines
2.8 KiB
Ruby
101 lines
2.8 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 Vllm < Base
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class << self
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def can_contact?(endpoint_name, model_name)
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endpoint_name == "vllm" &&
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%w[
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mistralai/Mixtral-8x7B-Instruct-v0.1
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mistralai/Mistral-7B-Instruct-v0.2
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StableBeluga2
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Upstage-Llama-2-*-instruct-v2
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Llama2-*-chat-hf
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Llama2-chat-hf
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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[ai_vllm_endpoint_srv ai_vllm_endpoint]
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end
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def correctly_configured?(_model_name)
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SiteSetting.ai_vllm_endpoint_srv.present? || SiteSetting.ai_vllm_endpoint.present?
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end
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def endpoint_name(model_name)
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"vLLM - #{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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{ max_tokens: 2000, model: model }
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end
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def provider_id
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AiApiAuditLog::Provider::Vllm
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end
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private
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def model_uri
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service = DiscourseAi::Utils::DnsSrv.lookup(SiteSetting.ai_vllm_endpoint_srv)
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if service.present?
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api_endpoint = "https://#{service.target}:#{service.port}/v1/completions"
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else
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api_endpoint = "#{SiteSetting.ai_vllm_endpoint}/v1/completions"
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end
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@uri ||= URI(api_endpoint)
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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(prompt: prompt)
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.tap { |payload| payload[:stream] = true if @streaming_mode }
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end
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def prepare_request(payload)
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headers = { "Referer" => Discourse.base_url, "Content-Type" => "application/json" }
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headers["X-API-KEY"] = SiteSetting.ai_vllm_api_key if SiteSetting.ai_vllm_api_key.present?
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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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parsed.dig(:text)
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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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end
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end
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end
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end
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