Module: Legion::MCP::CatalogDispatcher

Extended by:
Logging::Helper
Defined in:
lib/legion/mcp/catalog_dispatcher.rb

Class Method Summary collapse

Class Method Details

.build_tool_class(entry) ⇒ Object 



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# File 'lib/legion/mcp/catalog_dispatcher.rb', line 49

def build_tool_class(entry)
  runner_class_str = entry[:runner_class]
  function_name    = entry[:function]
  tool_name_val    = entry[:tool_name]
  desc             = entry[:description]
  schema           = entry[:input_schema] || { properties: {} }
  category         = entry[:category]
  tier             = entry[:tier]

  klass = Class.new(::MCP::Tool) do
    tool_name tool_name_val
    description desc
    input_schema(schema)
    define_singleton_method(:mcp_category) { category }
    define_singleton_method(:mcp_tier)     { tier }
    define_singleton_method(:catalog_entry) { true }
  end
  klass.extend(Legion::Logging::Helper)

  wire_dispatch(klass, runner_class_str, function_name, tool_name_val)
  klass
end

.dispatch(runner_class:, function:, params:, source: :mcp) ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/legion/mcp/catalog_dispatcher.rb', line 13

def dispatch(runner_class:, function:, params:, source: :mcp) # rubocop:disable Metrics/MethodLength
  LoggingSupport.info(
    'catalog.dispatch.start',
    runner_class: runner_class,
    function:     function,
    source:       source,
    params:       LoggingSupport.summarize_params(params)
  )
  unless defined?(Legion::Ingress)
    LoggingSupport.warn(
      'catalog.dispatch.skipped',
      runner_class: runner_class,
      function:     function,
      reason:       'ingress unavailable'
    )
    return nil
  end

  result = Legion::Ingress.run(
    payload:       params,
    runner_class:  runner_class,
    function:      function.to_sym,
    source:        source,
    check_subtask: true,
    generate_task: true
  )
  LoggingSupport.info(
    'catalog.dispatch.complete',
    runner_class: runner_class,
    function:     function,
    source:       source,
    result:       LoggingSupport.summarize_result(result)
  )
  result
end

.generate_tools_from_catalog ⇒ Object 



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# File 'lib/legion/mcp/catalog_dispatcher.rb', line 116

def generate_tools_from_catalog
  return [] unless defined?(Legion::Tools::Registry)
  return [] unless Legion::Tools::Registry.respond_to?(:all_tools)

  Legion::Tools::Registry.all_tools.filter_map do |tool_class|
    ToolAdapter.from_legion_tool(tool_class) if defined?(ToolAdapter) && ToolAdapter.respond_to?(:from_legion_tool)
  rescue StandardError => e
    handle_exception(e, level: :debug, operation: 'legion.mcp.catalog_dispatcher.generate_tools_from_catalog')
    nil
  end
end

.wire_dispatch(klass, runner_class_str, function_name, tool_name_val) ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/legion/mcp/catalog_dispatcher.rb', line 72

def wire_dispatch(klass, runner_class_str, function_name, tool_name_val) # rubocop:disable Metrics/MethodLength
  klass.define_singleton_method(:call) do |**params| # rubocop:disable Metrics/BlockLength
    LoggingSupport.info(
      'catalog.tool_call.start',
      tool_name:    tool_name_val,
      runner_class: runner_class_str,
      function:     function_name,
      params:       LoggingSupport.summarize_params(params)
    )
    result = CatalogDispatcher.dispatch(
      runner_class: runner_class_str,
      function:     function_name,
      params:       params
    )

    if result.nil?
      text = Legion::JSON.dump({ error: 'Ingress not available' })
      ::MCP::Tool::Response.new([{ type: 'text', text: text }], error: true)
    else
      text = defined?(Legion::JSON) ? Legion::JSON.dump(result) : result.to_s
      response = ::MCP::Tool::Response.new([{ type: 'text', text: text }])
      LoggingSupport.info(
        'catalog.tool_call.complete',
        tool_name:    tool_name_val,
        runner_class: runner_class_str,
        function:     function_name,
        result:       LoggingSupport.summarize_result(response)
      )
      response
    end
  rescue StandardError => e
    handle_exception(e, level: :warn, operation: 'legion.mcp.catalog_dispatcher.call')
    LoggingSupport.warn(
      'catalog.tool_call.failed',
      tool_name:    tool_name_val,
      runner_class: runner_class_str,
      function:     function_name,
      error:        e.message
    )
    text = Legion::JSON.dump({ error: e.message })
    ::MCP::Tool::Response.new([{ type: 'text', text: text }], error: true)
  end
end