Class: Prescient::Provider::Mistral

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

Overview

Mistral AI 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) ⇒ Mistral

Returns a new instance of Mistral.



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

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

Instance Method Details

#generate_embedding(text, **options) ⇒ Array<Float>

Generate an embedding through Mistral's embeddings API.

Parameters:

  • text (String) —

    Text to embed

Returns:

  • (Array<Float>) —

    Embedding vector



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

def generate_embedding(text, **options)
  handle_errors do
    embedding_model = options[:model] || @options[:embedding_model]
    response = self.class.post(
      "/v1/embeddings",
      headers: api_headers,
      body: {
        model: embedding_model,
        input: clean_text(text)
      }.to_json
    )

    validate_response!(response, "embedding generation")

    embedding = response.parsed_response.dig("data", 0, "embedding")
    raise Prescient::InvalidResponseError, "No embedding returned" unless embedding.is_a?(Array)

    expected_dimensions = @options[:embedding_dimensions]
    expected_dimensions ? validate_embedding_dimensions(embedding, expected_dimensions) : embedding
  end
end

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

Generate a response through Mistral's chat completions 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/mistral.rb', line 47

def generate_response(prompt, context_items = [], **options)
  handle_errors do
    model = options[:model] || @options[:chat_model]
    response = self.class.post(
      "/v1/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 = normalize_content(parsed_response.dig("choices", 0, "message", "content"))
    raise Prescient::InvalidResponseError, "No response generated" if content.nil? || content.empty?

    {
      response: content.strip,
      model: model,
      provider: "mistral",
      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 Mistral models are available.

Returns:

  • (Hash) —

    Provider health information



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# File 'lib/prescient/provider/mistral.rb', line 83

def health_check
  handle_errors do
    response = self.class.get("/v1/models", headers: api_headers)

    if response.success?
      models = response.parsed_response["data"] || []
      embedding_available = model_available?(models, @options[:embedding_model])
      chat_available = model_available?(models, @options[:chat_model])

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

#list_models ⇒ Array<Hash>

List models available to the configured Mistral API key.

Returns:

  • (Array<Hash>) —

    Model descriptors



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# File 'lib/prescient/provider/mistral.rb', line 125

def list_models
  handle_errors do
    response = self.class.get("/v1/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"],
        capabilities: model["capabilities"],
        max_context_length: model["max_context_length"]
      }.compact
    end
  end
end

#validate_configuration! ⇒ Object (protected)

Raises:



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# File 'lib/prescient/provider/mistral.rb', line 145

def validate_configuration!
  required_options = %i[api_key embedding_model 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