Module: ActionMCP::Server::Handlers::LoggingHandler

Included in:
JsonRpcHandler
Defined in:
lib/action_mcp/server/handlers/logging_handler.rb

Overview

Handler for MCP logging/setLevel requests

Instance Method Summary collapse

Instance Method Details

#handle_logging_set_level(id, params) ⇒ Hash

Handle logging/setLevel request

Parameters:

  • id (String) —

    The request ID

  • params (Hash) —

    Request parameters containing level

Returns:

  • (Hash) —

    Empty hash on success



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# File 'lib/action_mcp/server/handlers/logging_handler.rb', line 12

def handle_logging_set_level(id, params)
  unless ActionMCP::Logging.supported_by?(transport.session)
    transport.send_jsonrpc_error(id, :method_not_found, "Logging not enabled")
    return
  end

  unless params.is_a?(Hash)
    transport.send_jsonrpc_error(id, :invalid_params, "Logging params must be an object")
    return
  end

  level = params[:level] || params["level"]
  unless level
    transport.send_jsonrpc_error(id, :invalid_params, "Missing required parameter: level")
    return
  end

  begin
    ActionMCP::Logging.set_level_for(transport.session, level)

    # Send successful response (empty object per MCP spec)
    transport.send_jsonrpc_response(id, result: {})
  rescue ArgumentError => e
    # Invalid level
    transport.send_jsonrpc_error(id, :invalid_params, "Invalid log level: #{e.message}")
  rescue StandardError => e
    # Internal error
    transport.send_jsonrpc_error(id, :internal_error, "Internal error: #{e.message}")
  end
end