Class: Otto::MCP::Protocol

Inherits:
Object
  • Object
show all
Defined in:
lib/otto/mcp/protocol.rb

Overview

MCP protocol handler providing Model Context Protocol functionality

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(otto_instance) ⇒ Protocol

Returns a new instance of Protocol.



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# File 'lib/otto/mcp/protocol.rb', line 14

def initialize(otto_instance)
  @otto     = otto_instance
  @registry = Registry.new
end

Instance Attribute Details

#registry ⇒ Object (readonly)

Returns the value of attribute registry.



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# File 'lib/otto/mcp/protocol.rb', line 12

def registry
  @registry
end

Instance Method Details

#handle_request(env) ⇒ Object 



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# File 'lib/otto/mcp/protocol.rb', line 19

def handle_request(env)
  request = @otto.request_class.new(env)

  unless request.post? && request.content_type&.include?('application/json')
    return error_response(nil, -32_600, 'Invalid Request', 'Only JSON-RPC POST requests supported')
  end

  begin
    body = request.body.read
    data = JSON.parse(body)
  rescue JSON::ParserError
    return error_response(nil, -32_700, 'Parse error', 'Invalid JSON')
  end

  unless valid_jsonrpc_request?(data)
    return error_response(data['id'], -32_600, 'Invalid Request', 'Missing jsonrpc, method, or id fields')
  end

  case data['method']
  when 'initialize'
    handle_initialize(data)
  when 'resources/list'
    handle_resources_list(data)
  when 'resources/read'
    handle_resources_read(data)
  when 'tools/list'
    handle_tools_list(data)
  when 'tools/call'
    handle_tools_call(data, env)
  else
    error_response(data['id'], -32_601, 'Method not found', "Unknown method: #{data['method']}")
  end
end