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// $Id$
#include "orbsvcs/CosEvent/CEC_ProxyPushConsumer.h"
#include "orbsvcs/CosEvent/CEC_EventChannel.h"
#include "orbsvcs/CosEvent/CEC_ConsumerAdmin.h"
#include "orbsvcs/CosEvent/CEC_ProxyPushSupplier.h"
#include "ace/Reverse_Lock_T.h"
#if ! defined (__ACE_INLINE__)
#include "orbsvcs/CosEvent/CEC_ProxyPushConsumer.inl"
#endif /* __ACE_INLINE__ */
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
typedef ACE_Reverse_Lock<ACE_Lock> TAO_CEC_Unlock;
TAO_CEC_ProxyPushConsumer::
TAO_CEC_ProxyPushConsumer (TAO_CEC_EventChannel* ec,
const ACE_Time_Value &timeout)
: event_channel_ (ec),
timeout_(timeout),
refcount_ (1),
connected_ (false)
{
this->lock_ =
this->event_channel_->create_consumer_lock ();
this->default_POA_ =
this->event_channel_->consumer_poa ();
this->event_channel_->get_servant_retry_map ().bind (this, 0);
}
TAO_CEC_ProxyPushConsumer::~TAO_CEC_ProxyPushConsumer (void)
{
this->event_channel_->get_servant_retry_map ().unbind (this);
this->event_channel_->destroy_consumer_lock (this->lock_);
}
void
TAO_CEC_ProxyPushConsumer::activate (
CosEventChannelAdmin::ProxyPushConsumer_ptr &activated_proxy)
{
CosEventChannelAdmin::ProxyPushConsumer_var result;
try
{
result = this->_this ();
}
catch (const CORBA::Exception&)
{
result = CosEventChannelAdmin::ProxyPushConsumer::_nil ();
}
activated_proxy = result._retn ();
}
void
TAO_CEC_ProxyPushConsumer::deactivate (void)
{
try
{
PortableServer::POA_var poa =
this->_default_POA ();
PortableServer::ObjectId_var id =
poa->servant_to_id (this);
poa->deactivate_object (id.in ());
}
catch (const CORBA::Exception&)
{
// Exceptions here should not be propagated. They usually
// indicate that an object is beign disconnected twice, or some
// race condition, but not a fault that the user needs to know
// about.
}
}
CORBA::Boolean
TAO_CEC_ProxyPushConsumer::supplier_non_existent (
CORBA::Boolean_out disconnected)
{
CORBA::Object_var supplier;
{
ACE_GUARD_THROW_EX (
ACE_Lock, ace_mon, *this->lock_,
CORBA::INTERNAL ());
disconnected = false;
if (!this->is_connected_i ())
{
disconnected = true;
return false;
}
if (CORBA::is_nil (this->nopolicy_supplier_.in ()))
{
return false;
}
supplier = CORBA::Object::_duplicate (this->nopolicy_supplier_.in ());
}
#if (TAO_HAS_MINIMUM_CORBA == 0)
return supplier->_non_existent ();
#else
return false;
#endif /* TAO_HAS_MINIMUM_CORBA */
}
void
TAO_CEC_ProxyPushConsumer::shutdown (void)
{
CosEventComm::PushSupplier_var supplier;
{
ACE_GUARD_THROW_EX (
ACE_Lock, ace_mon, *this->lock_,
CORBA::INTERNAL ());
// @@ CosEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
supplier = this->supplier_._retn ();
this->connected_ = false;
}
this->deactivate ();
if (CORBA::is_nil (supplier.in ()))
return;
try
{
supplier->disconnect_push_supplier ();
}
catch (const CORBA::Exception&)
{
// Ignore exceptions, we must isolate other clients from
// failures on this one.
}
}
void
TAO_CEC_ProxyPushConsumer::cleanup_i (void)
{
this->supplier_ =
CosEventComm::PushSupplier::_nil ();
this->connected_ = false;
}
CORBA::ULong
TAO_CEC_ProxyPushConsumer::_incr_refcnt (void)
{
ACE_GUARD_RETURN (ACE_Lock, ace_mon, *this->lock_, 0);
return this->refcount_++;
}
CORBA::ULong
TAO_CEC_ProxyPushConsumer::_decr_refcnt (void)
{
{
ACE_GUARD_RETURN (ACE_Lock, ace_mon, *this->lock_, 0);
--this->refcount_;
if (this->refcount_ != 0)
return this->refcount_;
}
// Notify the event channel
this->event_channel_->destroy_proxy (this);
return 0;
}
void
TAO_CEC_ProxyPushConsumer::connect_push_supplier (
CosEventComm::PushSupplier_ptr push_supplier)
{
{
ACE_GUARD_THROW_EX (
ACE_Lock, ace_mon, *this->lock_,
CORBA::INTERNAL ());
// @@ CosEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
if (this->is_connected_i ())
{
if (this->event_channel_->supplier_reconnect () == 0)
throw CosEventChannelAdmin::AlreadyConnected ();
// Re-connections are allowed, go ahead and disconnect the
// consumer...
this->cleanup_i ();
// @@ Please read the comments in CEC_ProxyPushSupplier about
// possible race conditions in this area...
TAO_CEC_Unlock reverse_lock (*this->lock_);
{
ACE_GUARD_THROW_EX (
TAO_CEC_Unlock, ace_mon, reverse_lock,
CORBA::INTERNAL ());
// @@ CosEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
this->event_channel_->disconnected (this);
}
// What if a second thread connected us after this?
if (this->is_connected_i ())
return;
}
this->supplier_ = apply_policy (push_supplier);
this->connected_ = true;
}
// Notify the event channel...
this->event_channel_->connected (this);
}
CosEventComm::PushSupplier_ptr
TAO_CEC_ProxyPushConsumer::apply_policy (CosEventComm::PushSupplier_ptr pre)
{
if (CORBA::is_nil (pre)) return pre;
this->nopolicy_supplier_ = CosEventComm::PushSupplier::_duplicate (pre);
#if defined (TAO_HAS_CORBA_MESSAGING) && TAO_HAS_CORBA_MESSAGING != 0
CosEventComm::PushSupplier_var post =
CosEventComm::PushSupplier::_duplicate (pre);
if (this->timeout_ > ACE_Time_Value::zero)
{
CORBA::PolicyList policy_list;
policy_list.length (1);
policy_list[0] = this->event_channel_->
create_roundtrip_timeout_policy (this->timeout_);
CORBA::Object_var post_obj = pre->_set_policy_overrides
(policy_list, CORBA::ADD_OVERRIDE);
post = CosEventComm::PushSupplier::_narrow(post_obj.in ());
policy_list[0]->destroy ();
policy_list.length (0);
}
return post._retn ();
#else
return CosEventComm::PushSupplier::_duplicate (pre);
#endif /* TAO_HAS_CORBA_MESSAGING */
}
void
TAO_CEC_ProxyPushConsumer::push (const CORBA::Any& event)
{
TAO_CEC_ProxyPushConsumer_Guard ace_mon (this->lock_,
this->refcount_,
this->event_channel_,
this);
if (!ace_mon.locked ())
return;
this->event_channel_->consumer_admin ()->push (event);
}
void
TAO_CEC_ProxyPushConsumer::disconnect_push_consumer ()
{
CosEventComm::PushSupplier_var supplier;
{
ACE_GUARD_THROW_EX (
ACE_Lock, ace_mon, *this->lock_,
CORBA::INTERNAL ());
// @@ CosEventChannelAdmin::EventChannel::SYNCHRONIZATION_ERROR ());
if (!this->is_connected_i ())
throw CORBA::BAD_INV_ORDER (); // @@ add user exception?
supplier = this->supplier_._retn ();
this->cleanup_i ();
}
// Notify the event channel...
this->event_channel_->disconnected (this);
if (CORBA::is_nil (supplier.in ()))
return;
if (this->event_channel_->disconnect_callbacks ())
{
try
{
supplier->disconnect_push_supplier ();
}
catch (const CORBA::Exception&)
{
// Ignore exceptions, we must isolate other clients from
// failures on this one.
}
}
}
PortableServer::POA_ptr
TAO_CEC_ProxyPushConsumer::_default_POA (void)
{
return PortableServer::POA::_duplicate (this->default_POA_.in ());
}
void
TAO_CEC_ProxyPushConsumer::_add_ref (void)
{
this->_incr_refcnt ();
}
void
TAO_CEC_ProxyPushConsumer::_remove_ref (void)
{
this->_decr_refcnt ();
}
// ****************************************************************
TAO_CEC_ProxyPushConsumer_Guard::
TAO_CEC_ProxyPushConsumer_Guard (ACE_Lock *lock,
CORBA::ULong &refcount,
TAO_CEC_EventChannel *ec,
TAO_CEC_ProxyPushConsumer *proxy)
: lock_ (lock),
refcount_ (refcount),
event_channel_ (ec),
proxy_ (proxy),
locked_ (false)
{
ACE_GUARD (ACE_Lock, ace_mon, *this->lock_);
// If the guard fails there is not much we can do, raising an
// exception is wrong, the client has *no* way to handle that kind
// of error. Even worse, there is no exception to raise in that
// case.
// @@ Returning something won't work either, the error should be
// logged though!
if (!proxy->is_connected_i ())
return;
this->locked_ = true;
++this->refcount_;
}
TAO_CEC_ProxyPushConsumer_Guard::
~TAO_CEC_ProxyPushConsumer_Guard (void)
{
// This access is safe because guard objects are created on the
// stack, only one thread has access to them
if (!this->locked_)
return;
{
ACE_GUARD (ACE_Lock, ace_mon, *this->lock_);
// If the guard fails there is not much we can do, raising an
// exception is wrong, the client has *no* way to handle that kind
// of error. Even worse, there is no exception to raise in that
// case.
// @@ Returning something won't work either, the error should be
// logged though!
--this->refcount_;
if (this->refcount_ != 0)
return;
}
this->event_channel_->destroy_proxy (this->proxy_);
}
TAO_END_VERSIONED_NAMESPACE_DECL
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