Module: Rubino::LLM::ToolBridge

Defined in:
lib/rubino/llm/tool_bridge.rb

Overview

Wraps a Rubino::Tools::Base instance into a RubyLLM::Tool subclass so that ruby_llm can register it, serialize its schema to the LLM, and dispatch tool calls through our full execution pipeline.

When a ToolExecutor is provided (always the case in production), tool execution goes through:

ApprovalPolicy → tool.call() → truncation → ToolCallRepository.record

This ensures identical behavior regardless of LLM provider — there is now a single tool-execution path in the entire application.

Class Method Summary collapse

Class Method Details

.bridge_class_for(tool_name) ⇒ Object 



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# File 'lib/rubino/llm/tool_bridge.rb', line 27

def self.bridge_class_for(tool_name)
  @cache ||= {}
  @cache[tool_name] ||= build_class(tool_name)
end

.build_class(tool_name) ⇒ Object 



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# File 'lib/rubino/llm/tool_bridge.rb', line 32

def self.build_class(tool_name)
  klass = Class.new(::RubyLLM::Tool) do
    define_method(:name) { tool_name }

    define_method(:initialize) do |agent_tool, ui:, event_bus:, tool_executor:|
      @agent_tool    = agent_tool
      @ui            = ui
      @event_bus     = event_bus
      @tool_executor = tool_executor
    end

    define_method(:description) { @agent_tool.description }
    define_method(:params_schema) { @agent_tool.input_schema }

    define_method(:execute) do |**kwargs|
      name = @agent_tool.name
      args = kwargs.transform_keys(&:to_s)

      if @tool_executor
        # Full pipeline: approval check → tool.call → truncation → audit record
        result = @tool_executor.execute(
          name: name,
          arguments: args,
          call_id: nil
        )
        result.output
      else
        # Fallback: direct call (tests / one-shot mode without full Lifecycle)
        @event_bus&.emit(Rubino::Interaction::Events::TOOL_STARTED, name: name)
        @ui&.tool_started(name, arguments: args)

        begin
          output = @agent_tool.call(args)
          result = Rubino::Tools::Result.success(
            name: name, call_id: nil, output: output.to_s
          )
          @event_bus&.emit(Rubino::Interaction::Events::TOOL_FINISHED, name: name)
          @ui&.tool_finished(name, result: result)
          result.output
        rescue StandardError => e
          @event_bus&.emit(Rubino::Interaction::Events::TOOL_FINISHED, name: name)
          @ui&.tool_finished(name)
          "Error: #{e.message}"
        end
      end
    end
  end

  const_name = "Bridge_#{tool_name.gsub(/[^a-zA-Z0-9]/, "_")}"
  unless Rubino::LLM::ToolBridge.const_defined?(const_name, false)
    Rubino::LLM::ToolBridge.const_set(const_name, klass)
  end

  klass
end

.for(agent_tool, ui: nil, event_bus: nil, tool_executor: nil) ⇒ Object

Returns a RubyLLM::Tool instance wrapping agent_tool.



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# File 'lib/rubino/llm/tool_bridge.rb', line 19

def self.for(agent_tool, ui: nil, event_bus: nil, tool_executor: nil)
  klass = bridge_class_for(agent_tool.name)
  klass.new(agent_tool,
            ui: ui || Rubino.ui,
            event_bus: event_bus || Rubino.event_bus,
            tool_executor: tool_executor)
end