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// -*- C++ -*-
/**
* @file Reconnection_Registry.cpp
*
* $Id$
*
* @author Dale Wilson <wilson_d@ociweb.com>
*/
#include "orbsvcs/Notify/Reconnection_Registry.h"
#include "tao/debug.h"
#include "orbsvcs/Notify/Properties.h"
#include "orbsvcs/Notify/Topology_Saver.h"
#include "ace/Vector_T.h"
//#define DEBUG_LEVEL 10
#ifndef DEBUG_LEVEL
# define DEBUG_LEVEL TAO_debug_level
#endif
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
namespace TAO_Notify
{
const char REGISTRY_TYPE[] = "reconnect_registry";
const char RECONNECT_ID[] = "ReconnectId";
const char RECONNECT_IOR[] = "IOR";
const char REGISTRY_CALLBACK_TYPE[] = "reconnect_callback";
Reconnection_Registry::Reconnection_Registry (Topology_Parent & parent)
: highest_id_(0)
{
// not the best technique, here. Take advantage of "protected"
Topology_Object::topology_parent_ = &parent;
}
Reconnection_Registry::~Reconnection_Registry ()
{
}
//////////////////////////
// During normal operation
NotifyExt::ReconnectionRegistry::ReconnectionID
Reconnection_Registry::register_callback (
NotifyExt::ReconnectionCallback_ptr callback)
{
//@@todo DO WE NEED THREAD SAFENESS?
NotifyExt::ReconnectionRegistry::ReconnectionID next_id = ++highest_id_;
if (DEBUG_LEVEL > 0)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) Reconnect registry: registering %d\n"),
static_cast<int> (next_id)
));
}
TAO_Notify_Properties* properties = TAO_Notify_PROPERTIES::instance();
CORBA::ORB_var orb = properties->orb ();
CORBA::String_var cior = orb->object_to_string (callback);
ACE_CString ior(cior.in ());
if ( 0 != reconnection_registry_.bind (next_id, ior))
{
//todo throw something;
}
this->self_change ();
return next_id;
}
void
Reconnection_Registry::unregister_callback (NotifyExt::ReconnectionRegistry::ReconnectionID id)
{
if (DEBUG_LEVEL > 0)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) Reconnect registry: unregistering %d\n"),
static_cast<int> (id)
));
}
if ( 0 != reconnection_registry_.unbind (id))
{
//@@todo throw something
}
this->self_change ();
}
CORBA::Boolean
Reconnection_Registry::is_alive (void)
{
return CORBA::Boolean(1);
}
//////////////////////
// During topology save
void
Reconnection_Registry::save_persistent (Topology_Saver& saver)
{
bool change = this->self_changed_;
this->self_changed_ = false;
this->children_changed_ = false;
NVPList attrs;
//@@todo: bool want_all_children =
saver.begin_object (0, REGISTRY_TYPE, attrs, change);
Reconnection_Registry_Type::ENTRY *entry;
for (Reconnection_Registry_Type::ITERATOR iter (this->reconnection_registry_);
iter.next (entry);
iter.advance ())
{
NVPList cattrs;
if (DEBUG_LEVEL > 0)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) Reconnect registry: saving %d\n"),
static_cast<int> (entry->ext_id_)
));
}
cattrs.push_back(NVP(RECONNECT_ID, entry->ext_id_));
cattrs.push_back(NVP(RECONNECT_IOR, entry->int_id_));
saver.begin_object (entry->ext_id_, REGISTRY_CALLBACK_TYPE, cattrs, true);
saver.end_object (entry->ext_id_, REGISTRY_CALLBACK_TYPE);
}
// todo:
// for all deleted children
// {
// saver.delete_child(child_type, child_id);
// }
saver.end_object (0, REGISTRY_TYPE);
}
///////////////////////////////////////
// During reload of persistent topology
Topology_Object*
Reconnection_Registry::load_child (const ACE_CString & type,
CORBA::Long,
const NVPList& attrs)
{
if (type == REGISTRY_CALLBACK_TYPE)
{
NotifyExt::ReconnectionRegistry::ReconnectionID id;
ACE_CString ior;
if (attrs.load (RECONNECT_ID, id) && attrs.load (RECONNECT_IOR, ior))
{
if (id > highest_id_)
{
highest_id_ = id;
if (DEBUG_LEVEL > 0)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) Reconnect registry: reloading %d\n"),
static_cast<int> (id)
));
}
}
if ( 0 != reconnection_registry_.bind (id, ior))
{
//@@todo - throw something;
}
}
else
{
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("(%P|%t) Reconnect registry: missing attribute\n")
));
}
}
return this;
}
void
Reconnection_Registry::send_reconnect (CosNotifyChannelAdmin::EventChannelFactory_ptr dest_factory)
{
TAO_Notify_Properties* properties = TAO_Notify_PROPERTIES::instance();
CORBA::ORB_var orb = properties->orb ();
ACE_Vector <NotifyExt::ReconnectionRegistry::ReconnectionID> bad_ids;
Reconnection_Registry_Type::ENTRY *entry;
for (Reconnection_Registry_Type::ITERATOR iter (this->reconnection_registry_);
iter.next (entry);
iter.advance ())
{
try
{
if (DEBUG_LEVEL > 0)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) Reconnection Registry: Sending reconnection to client %d\n"),
static_cast<int> (entry->ext_id_)
));
}
ACE_CString & ior = entry->int_id_;
CORBA::Object_var obj = orb->string_to_object (ior.c_str ());
NotifyExt::ReconnectionCallback_var callback =
NotifyExt::ReconnectionCallback::_narrow (obj.in ());
if (!CORBA::is_nil (callback.in ()))
{
callback->reconnect (dest_factory);
}
else
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) Reconnection Registry: Can't resolve reconnection client's IOR %d\n"),
static_cast<int> (entry->ext_id_)
));
//throw this entry away but you've got an iterator so be careful
bad_ids.push_back (entry->ext_id_);
}
}
catch (const CORBA::Exception&)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("(%P|%t) Reconnection Registry: Exception sending reconnection to client -- discarding registry entry\n")
));
//throw this entry away but you've got an iterator so be careful
bad_ids.push_back (entry->ext_id_);
//@@todo : we might want to check for retryable exceptions, but for now...
}
}
size_t bad_count = bad_ids.size ();
for (size_t nbad = 0; nbad < bad_count; ++nbad)
{
this->reconnection_registry_.unbind (bad_ids[nbad]);
}
}
void
Reconnection_Registry::release (void)
{
delete this;
//@@ inform factory
}
} // namespace TAO_Notify
TAO_END_VERSIONED_NAMESPACE_DECL
|
