Class: Deepseek

Inherits:
LastLLM::Provider show all
Defined in:
lib/last_llm/providers/deepseek.rb

Overview

Deepseek provider implementation

Constant Summary collapse

BASE_ENDPOINT = 
'https://api.deepseek.com'

Instance Attribute Summary

Attributes inherited from LastLLM::Provider

#config, #name

Instance Method Summary collapse

Methods inherited from LastLLM::Provider

#handle_request_error, #parse_response

Constructor Details

#initialize(config) ⇒ Deepseek

Returns a new instance of Deepseek.



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# File 'lib/last_llm/providers/deepseek.rb', line 9

def initialize(config)
  super(Constants::DEEPSEEK, config)
  @conn = connection(config[:base_url] || BASE_ENDPOINT)
end

Instance Method Details

#generate_object(prompt, schema, options = {}) ⇒ Object 



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# File 'lib/last_llm/providers/deepseek.rb', line 36

def generate_object(prompt, schema, options = {})
  system_prompt = 'You are a helpful assistant that responds with valid JSON.'
  formatted_prompt = LastLLM::StructuredOutput.format_prompt(prompt, schema)

  messages = [
    { role: 'system', content: system_prompt },
    { role: 'user', content: formatted_prompt }
  ]

  response = @conn.post('/v1/chat/completions') do |req|
    req.body = {
      model: options[:model] || @config[:model] || 'deepseek-chat',
      messages: messages,
      temperature: options[:temperature] || 0.2,
      top_p: options[:top_p] || 0.8,
      stream: false
    }.compact
  end

  result = parse_response(response)
  content = result.dig(:choices, 0, :message, :content)

  begin
    JSON.parse(content, symbolize_names: true)
  rescue JSON::ParserError => e
    # Try to clean markdown code blocks and parse again
    content.gsub!("```json\n", '').gsub!("\n```", '')
    begin
      JSON.parse(content, symbolize_names: true)
    rescue JSON::ParserError
      raise LastLLM::ApiError, "Invalid JSON response: #{e.message}"
    end
  end
rescue Faraday::Error => e
  handle_request_error(e)
end

#generate_text(prompt, options = {}) ⇒ Object 



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# File 'lib/last_llm/providers/deepseek.rb', line 14

def generate_text(prompt, options = {})
  messages = format_messages(prompt, options)

  response = @conn.post('/v1/chat/completions') do |req|
    req.body = {
      model: options[:model] || @config[:model] || 'deepseek-chat',
      messages: messages,
      temperature: options[:temperature] || 0.7,
      top_p: options[:top_p] || 0.8,
      max_tokens: options[:max_tokens],
      stream: false
    }.compact
  end

  result = parse_response(response)
  content = result.dig(:choices, 0, :message, :content)

  content.to_s
rescue Faraday::Error => e
  handle_request_error(e)
end