具有 corbaloc 访问权限的 MICO CORBA 服务器

Question

我正在使用 MICO 创建一个 C++ CORBA 服务器。

在我的系统中，客户端应该能够使用 corbaloc 地址（无名称服务）直接访问服务器中的 corba 对象。 你知道MICO是否提供这样的功能吗？我该如何实施？我试过了：

ORB_ptr orb = CORBA::ORB_init (argc, argv, "mico-local-orb");
Object_var obj = orb -> resolve_initial_references( "RootPOA" );
PortableServer::POA_var poa = PortableServer::POA::_narrow( obj );
PortableServer::POAManager_var pman = poa -> the_POAManager();
pman -> activate();

PortableServer::ObjectId_var oid = PortableServer::string_to_ObjectId( "hello" );

HelloImpl* servant = new HelloImpl();

poa -> activate_object_with_id( oid.in(), servant );
servant -> _remove_ref();

orb -> run();

此代码适用于 OMNIORB，但不适用于 MICO。

编辑：我也尝试了持久的生命周期政策，但它也不起作用：

ORB_ptr orb = ORB_init( argc, argv );
Object_var obj = orb -> resolve_initial_references( "RootPOA" );
PortableServer::POA_var poa = PortableServer::POA::_narrow( obj );
PortableServer::POAManager_var pman = poa -> the_POAManager();
pman -> activate();

PortableServer::LifespanPolicy_var lifespan = 
    poa -> create_lifespan_policy( PortableServer::PERSISTENT );
PortableServer::IdAssignmentPolicy_var idassignment = 
    poa ->  create_id_assignment_policy ( PortableServer::USER_ID );
CORBA::PolicyList policies( 2 );
policies.length( 2 );
policies[0] = PortableServer::IdAssignmentPolicy::_duplicate( idassignment );
policies[1] = PortableServer::LifespanPolicy::_duplicate( lifespan );
PortableServer::POA_var child_poa = 
    poa -> create_POA( "childPOA", pman.in(), policies );
PortableServer::POAManager_var child_pman = child_poa -> the_POAManager();
child_pman -> activate();

idassignment -> destroy();
lifespan -> destroy();

HelloImpl* servant = new HelloImpl();

PortableServer::ObjectId_var oid = child_poa -> activate_object( servant );
CORBA::Object_var ref = child_poa -> id_to_reference( oid.in() );
PortableServer::ObjectId_var oid = PortableServer::string_to_ObjectId( "hello" );
child_poa -> activate_object_with_id ( oid.in (), servant );

orb -> run();

编辑2： 我用一个尝试string_to_object以下corbaloc地址的客户端测试了服务器：

• corbaloc:iiop:localhost:12345/hello
• corbaloc:iiop:localhost:12345/childPOA/hello

但他们都没有工作。我总是收到CORBA::OBJECT_NOT_EXIST 异常。

谢谢

Answer 1

对于 Mico，您还必须在 corbalo url 中使用 poa 层次结构。对于您的示例，corbaloc::localhost:12345/childPOA/hello 应该可以工作。

另见the Diploma thesis of Frank Pilhofer, the implementor of Mico's POA，其中指出

 create a persistent POA with the name ``MyPOA'', and then activate an object 
 using the ``MyObject'' Object Id, you could refer to that object using the IOR

  iioploc://thishost:1234/MyService/MyPOA/MyObject

编辑：您必须使用服务名称-POAImplName MyService 启动您的服务可执行文件