diff options
Diffstat (limited to 'ACE/TAO/orbsvcs/orbsvcs/Event/EC_Reactive_ConsumerControl.cpp')
| -rw-r--r-- | ACE/TAO/orbsvcs/orbsvcs/Event/EC_Reactive_ConsumerControl.cpp | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/ACE/TAO/orbsvcs/orbsvcs/Event/EC_Reactive_ConsumerControl.cpp b/ACE/TAO/orbsvcs/orbsvcs/Event/EC_Reactive_ConsumerControl.cpp new file mode 100644 index 00000000000..c72ea526cf8 --- /dev/null +++ b/ACE/TAO/orbsvcs/orbsvcs/Event/EC_Reactive_ConsumerControl.cpp @@ -0,0 +1,242 @@ +// $Id$ + +#include "orbsvcs/Event/EC_ConsumerAdmin.h" +#include "orbsvcs/Event/EC_Reactive_ConsumerControl.h" +#include "orbsvcs/Event/EC_Event_Channel_Base.h" +#include "orbsvcs/Event/EC_ProxySupplier.h" +#include "orbsvcs/Event/EC_ProxyConsumer.h" // @@ MSVC 6 bug + +#include "tao/Messaging/Messaging.h" +#include "tao/ORB_Core.h" + +#include "ace/Reactor.h" + +#if ! defined (__ACE_INLINE__) +#include "orbsvcs/Event/EC_Reactive_ConsumerControl.inl" +#endif /* __ACE_INLINE__ */ + +ACE_RCSID(Event, EC_Reactive_ConsumerControl, "$Id$") + +TAO_BEGIN_VERSIONED_NAMESPACE_DECL + +TAO_EC_Reactive_ConsumerControl:: + TAO_EC_Reactive_ConsumerControl (const ACE_Time_Value &rate, + const ACE_Time_Value &timeout, + TAO_EC_Event_Channel_Base *ec, + CORBA::ORB_ptr orb) + : rate_ (rate), + timeout_ (timeout), + adapter_ (this), + event_channel_ (ec), + orb_ (CORBA::ORB::_duplicate (orb)) +#if defined (TAO_HAS_CORBA_MESSAGING) && TAO_HAS_CORBA_MESSAGING != 0 + , timer_id_ (-1) +#endif /* TAO_HAS_CORBA_MESSAGING != 0*/ +{ + this->reactor_ = + this->orb_->orb_core ()->reactor (); +} + +TAO_EC_Reactive_ConsumerControl::~TAO_EC_Reactive_ConsumerControl (void) +{ +} + +void +TAO_EC_Reactive_ConsumerControl::query_consumers () +{ + TAO_EC_Ping_Consumer worker (this); + this->event_channel_->for_each_consumer (&worker); +} + +void +TAO_EC_Reactive_ConsumerControl::handle_timeout ( + const ACE_Time_Value &, + const void *) +{ + // NOTE, setting RELATIVE_RT_TIMEOUT_POLICY for the duration of + // query_consumers () below has greater impact than desired. For + // example, while we are pinging consumers here, a nested upcall, + // which requires making remote calls may come into the ORB. Those + // remote calls will be carried out with with + // RELATIVE_RT_TIMEOUT_POLICY set here in effect. + + // @@ TODO: should use Guard to set and reset policies. + try + { + // Query the state of the Current object *before* we initiate + // the iteration... + CORBA::PolicyTypeSeq types; + CORBA::PolicyList_var policies = + this->policy_current_->get_policy_overrides (types); + + // Change the timeout + this->policy_current_->set_policy_overrides (this->policy_list_, + CORBA::ADD_OVERRIDE); + + // Query the state of the consumers... + this->query_consumers (); + + this->policy_current_->set_policy_overrides (policies.in (), + CORBA::SET_OVERRIDE); + for (CORBA::ULong i = 0; i != policies->length (); ++i) + { + policies[i]->destroy (); + } + } + catch (const CORBA::Exception&) + { + // Ignore all exceptions + } +} + +int +TAO_EC_Reactive_ConsumerControl::activate (void) +{ +#if defined (TAO_HAS_CORBA_MESSAGING) && TAO_HAS_CORBA_MESSAGING != 0 + try + { + // Get the PolicyCurrent object + CORBA::Object_var tmp = + this->orb_->resolve_initial_references ("PolicyCurrent"); + + this->policy_current_ = + CORBA::PolicyCurrent::_narrow (tmp.in ()); + + // Timeout for polling state (default = 10 msec) + TimeBase::TimeT timeout = timeout_.usec() * 10; + CORBA::Any any; + any <<= timeout; + + this->policy_list_.length (1); + this->policy_list_[0] = + this->orb_->create_policy ( + Messaging::RELATIVE_RT_TIMEOUT_POLICY_TYPE, any); + + // Only schedule the timer, when the rate is not zero + if (this->rate_ != ACE_Time_Value::zero) + { + // Schedule the timer after these policies has been set, because the + // handle_timeout uses these policies, if done in front, the channel + // can crash when the timeout expires before initiazation is ready. + timer_id_ = this->reactor_->schedule_timer (&this->adapter_, + 0, + this->rate_, + this->rate_); + if (timer_id_ == -1) + return -1; + } + } + catch (const CORBA::Exception&) + { + return -1; + } +#endif /* TAO_HAS_CORBA_MESSAGING */ + + return 0; +} + +int +TAO_EC_Reactive_ConsumerControl::shutdown (void) +{ + int r = 0; + +#if defined (TAO_HAS_CORBA_MESSAGING) && TAO_HAS_CORBA_MESSAGING != 0 + r = this->reactor_->cancel_timer (timer_id_); +#endif /* TAO_HAS_CORBA_MESSAGING */ + this->adapter_.reactor (0); + return r; +} + +void +TAO_EC_Reactive_ConsumerControl::consumer_not_exist ( + TAO_EC_ProxyPushSupplier *proxy) +{ + try + { + //ACE_DEBUG ((LM_DEBUG, + // "EC_Reactive_ConsumerControl(%P|%t) - " + // "Consumer %x does not exists\n", long(proxy))); + proxy->disconnect_push_supplier (); + } + catch (const CORBA::Exception& ex) + { + ex._tao_print_exception ("Reactive_ConsumerControl::consumer_not_exist"); + // Ignore all exceptions.. + } +} + +void +TAO_EC_Reactive_ConsumerControl::system_exception ( + TAO_EC_ProxyPushSupplier *proxy, + CORBA::SystemException & /* exception */) +{ + try + { + // The current implementation is very strict, and kicks out a + // client on the first system exception. We may + // want to be more lenient in the future, for example, + // this is TAO's minor code for a failed connection. + // + // if (CORBA::TRANSIENT::_narrow (&exception) != 0 + // && exception->minor () == 0x54410085) + // return; + + // Anything else is serious, including timeouts... + proxy->disconnect_push_supplier (); + } + catch (const CORBA::Exception&) + { + // Ignore all exceptions.. + } +} + +// **************************************************************** + +TAO_EC_ConsumerControl_Adapter::TAO_EC_ConsumerControl_Adapter ( + TAO_EC_Reactive_ConsumerControl *adaptee) + : adaptee_ (adaptee) +{ +} + +int +TAO_EC_ConsumerControl_Adapter::handle_timeout ( + const ACE_Time_Value &tv, + const void *arg) +{ + this->adaptee_->handle_timeout (tv, arg); + return 0; +} + +// **************************************************************** + +void +TAO_EC_Ping_Consumer::work (TAO_EC_ProxyPushSupplier *supplier) +{ + try + { + CORBA::Boolean disconnected; + CORBA::Boolean non_existent = + supplier->consumer_non_existent (disconnected); + if (non_existent && !disconnected) + { + this->control_->consumer_not_exist (supplier); + } + } + catch (const CORBA::OBJECT_NOT_EXIST&) + { + this->control_->consumer_not_exist (supplier); + } + catch (const CORBA::TRANSIENT&) + { + // This is TAO's minor code for a failed connection, we may + // want to be more lenient in the future.. + // if (transient.minor () == 0x54410085) + this->control_->consumer_not_exist (supplier); + } + catch (const CORBA::Exception&) + { + // Ignore all exceptions + } +} + +TAO_END_VERSIONED_NAMESPACE_DECL |