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 11

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 19

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 27

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 63

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 103

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 122

def validate_configuration!
  required_options = [: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