Class: Prescient::Provider::DeepSeek

Inherits:
Base
  • Object
show all
Includes:
HTTParty
Defined in:
lib/prescient/provider/deepseek.rb

Overview

DeepSeek API provider adapter.

Instance Attribute Summary

Attributes inherited from Base

#options, #provider_name

Instance Method Summary collapse

Methods inherited from Base

#available?, #build_prompt, #clean_text, #default_context_configs, #default_prompt_templates, #extract_embedding_text, #extract_text_values, #format_context_item, #handle_errors, #validate_embedding_dimensions

Constructor Details

#initialize(**options) ⇒ DeepSeek

Returns a new instance of DeepSeek.



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# File 'lib/prescient/provider/deepseek.rb', line 13

def initialize(**options)
  super
  @provider_name = "DeepSeek"
  self.class.default_timeout(@options[:timeout] || 60)
end

Instance Method Details

#generate_embedding(_text, **_options) ⇒ Object

DeepSeek does not currently provide an embeddings endpoint.

Raises:



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# File 'lib/prescient/provider/deepseek.rb', line 21

def generate_embedding(_text, **_options)
  raise Prescient::Error, "DeepSeek provider does not support embeddings."
end

#generate_response(prompt, context_items = [], **options) ⇒ Hash

Generate a response through DeepSeek's OpenAI-compatible chat API.

Parameters:

  • prompt (String) —

    Prompt to send

  • context_items (Array<Hash, String>) (defaults to: []) —

    Optional context items

Returns:

  • (Hash) —

    Normalized response data



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# File 'lib/prescient/provider/deepseek.rb', line 29

def generate_response(prompt, context_items = [], **options)
  handle_errors do
    model = options[:model] || @options[:chat_model]
    response = self.class.post(
      "/chat/completions",
      headers: api_headers,
      body: {
        model: model,
        messages: [{ role: "user", content: build_prompt(prompt, context_items) }],
        max_tokens: options[:max_tokens] || 2000,
        temperature: options[:temperature] || 0.7,
        top_p: options[:top_p] || 0.9
      }.to_json
    )

    validate_response!(response, "text generation")

    parsed_response = response.parsed_response
    content = parsed_response.dig("choices", 0, "message", "content")
    raise Prescient::InvalidResponseError, "No response generated" unless content.is_a?(String) && !content.empty?

    {
      response: content.strip,
      model: model,
      provider: "deepseek",
      processing_time: nil,
      metadata: {
        usage: parsed_response["usage"],
        finish_reason: parsed_response.dig("choices", 0, "finish_reason")
      }
    }
  end
end

#health_check ⇒ Hash

Check whether the configured DeepSeek model is available.

Returns:

  • (Hash) —

    Provider health information



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# File 'lib/prescient/provider/deepseek.rb', line 65

def health_check
  handle_errors do
    response = self.class.get("/models", headers: api_headers)

    if response.success?
      models = response.parsed_response["data"] || []
      model_available = models.any? { |model| model["id"] == @options[:chat_model] }

      {
        status: "healthy",
        provider: "deepseek",
        reachable: true,
        models_available: models.map { |model| model["id"] },
        chat_model: { name: @options[:chat_model], available: model_available },
        ready: model_available
      }
    else
      {
        status: "unhealthy",
        provider: "deepseek",
        reachable: true,
        error: "HTTP #{response.code}",
        message: response.message,
        ready: false
      }
    end
  end
rescue Prescient::Error => e
  {
    status: "unavailable",
    provider: "deepseek",
    reachable: false,
    error: e.class.name,
    message: e.message,
    ready: false
  }
end

#list_models ⇒ Array<Hash>

List models available to the configured DeepSeek API key.

Returns:

  • (Array<Hash>) —

    Model descriptors



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# File 'lib/prescient/provider/deepseek.rb', line 105

def list_models
  handle_errors do
    response = self.class.get("/models", headers: api_headers)
    validate_response!(response, "model listing")

    (response.parsed_response["data"] || []).map do |model|
      {
        name: model["id"],
        object: model["object"],
        created: model["created"],
        owned_by: model["owned_by"],
        permission: model["permission"]
      }.compact
    end
  end
end

#validate_configuration! ⇒ Object (protected)

Raises:



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# File 'lib/prescient/provider/deepseek.rb', line 124

def validate_configuration!
  required_options = %i[api_key chat_model]
  missing_options = required_options.select { |option| @options[option].nil? }

  return unless missing_options.any?

  raise Prescient::Error, "Missing required options: #{missing_options.join(", ")}"
end