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//=============================================================================
/**
* @file server.cpp
*
* @author Source code used in TAO has been modified and adapted from the codeprovided in the book
* @author "Advanced CORBA Programming with C++" by MichiHenning and Steve Vinoski. Copyright 1999. Addison-Wesley
* @author Reading
* @author MA.Modified for TAO by Mike Moran <mm4@cs.wustl.edu>
*/
//=============================================================================
#include "server.h"
#include <algorithm>
#include "icp.h"
//#include <iostream.h>
//#include <assert.h>
//----------------------------------------------------------------
// Generic ostream inserter for exceptions. Inserts the exception
// name, if available, and the repository ID otherwise.
#if 0 //This inserter may or may not be needed for your ORB.
static ostream &
operator<< (ostream & os, const CORBA::Exception & e)
{
CORBA::Any tmp;
tmp <<= e;
CORBA::TypeCode_var tc = tmp.type ();
const char * p = tc->name ();
if (*p != '\0')
os << p;
else
os << tc->id ();
return os;
}
#endif
//----------------------------------------------------------------
Controller_impl * Thermometer_impl::m_ctrl; // static member
// Helper function to read the model string from a device.
CCS::ModelType
Thermometer_impl::
get_model ()
{
char buf[32];
assert (ICP_get (m_anum, "model", buf, sizeof (buf)) == 0);
return CORBA::string_dup (buf);
}
// Helper function to read the temperature from a device.
CCS::TempType
Thermometer_impl::
get_temp ()
{
short temp;
assert (
ICP_get (m_anum, "temperature", &temp, sizeof (temp)
) == 0);
return temp;
}
// Helper function to read the location from a device.
CCS::LocType
Thermometer_impl::
get_loc ()
{
char buf[32];
assert (ICP_get (m_anum, "location", buf, sizeof (buf)) == 0);
return CORBA::string_dup (buf);
}
// Helper function to set the location of a device.
void
Thermometer_impl::
set_loc (const char * loc)
{
long result = 0;
result = ICP_set (m_anum, "location", loc);
assert (result == 0);
}
// Constructor.
Thermometer_impl::
Thermometer_impl (
CCS::AssetType anum,
const char * location
) : m_anum (anum)
{
assert (ICP_online (anum) == 0); // Mark device as on-line
set_loc (location);
m_ctrl->add_impl (anum, this); // Add self to controller's map
}
// Destructor.
Thermometer_impl::
~Thermometer_impl ()
{
try {
m_ctrl->remove_impl (m_anum); // Remove self from map
ICP_offline (m_anum); // Mark device as off-line
}
catch (...) {
assert (0); // Prevent exceptions from escaping
}
}
// IDL model attribute.
CCS::ModelType
Thermometer_impl::model ()
{
return get_model ();
}
// IDL asset_num attribute.
CCS::AssetType
Thermometer_impl::asset_num ()
{
return m_anum;
}
// IDL temperature attribute.
CCS::TempType
Thermometer_impl::temperature ()
{
return get_temp ();
}
// IDL location attribute accessor.
CCS::LocType
Thermometer_impl::location ()
{
return get_loc ();
}
// IDL location attribute modifier.
void
Thermometer_impl::location (const char * loc)
{
set_loc (loc);
}
//----------------------------------------------------------------
// Helper function to get a thermostat's nominal temperature.
CCS::TempType
Thermostat_impl::get_nominal_temp ()
{
short temp;
assert (
ICP_get (m_anum, "nominal_temp", &temp, sizeof (temp)
) == 0);
return temp;
}
// Helper function to set a thermostat's nominal temperature.
CCS::TempType
Thermostat_impl::
set_nominal_temp (CCS::TempType new_temp)
{
short old_temp;
// We need to return the previous nominal temperature,
// so we first read the current nominal temperature before
// changing it.
assert (ICP_get (
m_anum, "nominal_temp",
&old_temp, sizeof (old_temp)
) == 0
);
// Now set the nominal temperature to the new value.
if (ICP_set (m_anum, "nominal_temp", &new_temp) != 0) {
// If ICP_set () failed, read this thermostat's minimum
// and maximum so we can initialize the BadTemp exception.
CCS::Thermostat::BtData btd;
ICP_get (
m_anum, "MIN_TEMP",
&btd.min_permitted, sizeof (btd.min_permitted)
);
ICP_get (
m_anum, "MAX_TEMP",
&btd.max_permitted, sizeof (btd.max_permitted)
);
btd.requested = new_temp;
btd.error_msg = CORBA::string_dup (
new_temp > btd.max_permitted ? "Too hot" : "Too cold"
);
throw CCS::Thermostat::BadTemp (btd);
}
return old_temp;
}
// Constructor.
Thermostat_impl::
Thermostat_impl (
CCS::AssetType anum,
const char * location,
CCS::TempType nominal_temp
) : Thermometer_impl (anum, location)
{
// Base Thermometer_impl constructor does most of the
// work, so we need only set the nominal temperature here.
set_nominal_temp (nominal_temp);
}
// IDL get_nominal operation.
CCS::TempType
Thermostat_impl::get_nominal ()
{
return get_nominal_temp ();
}
// IDL set_nominal operation.
CCS::TempType
Thermostat_impl::
set_nominal (CCS::TempType new_temp)
{
return set_nominal_temp (new_temp);
}
//----------------------------------------------------------------
// Helper function for thermometers and thermostats to
// add themselves to the m_assets map.
void
Controller_impl::
add_impl (CCS::AssetType anum, Thermometer_impl * tip)
{
m_assets[anum] = tip;
}
// Helper function for thermometers and thermostats to
// remove themselves from the m_assets map.
void
Controller_impl::
remove_impl (CCS::AssetType anum)
{
m_assets.erase (anum);
}
// IDL list operation.
CCS::Controller::ThermometerSeq *
Controller_impl::list ()
{
// Create a new thermometer sequence. Because we know
// the number of elements we will put onto the sequence,
// we use the maximum constructor.
CCS::Controller::ThermometerSeq_var listv
= new CCS::Controller::ThermometerSeq (m_assets.size ());
listv->length (m_assets.size ());
// Loop over the m_assets map and create a
// reference for each device.
CORBA::ULong count = 0;
AssetMap::iterator i;
for (i = m_assets.begin (); i != m_assets.end (); i++)
listv[count++] = i->second->_this ();
return listv._retn ();
}
// IDL change operation.
void
Controller_impl::
change (
const CCS::Controller::ThermostatSeq & tlist,
CORBA::Short delta
)
{
CCS::Controller::EChange ec; // Just in case we need it
// We cannot add a delta value to a thermostat's temperature
// directly, so for each thermostat, we read the nominal
// temperature, add the delta value to it, and write
// it back again.
for (CORBA::ULong i = 0; i < tlist.length (); i++) {
if (CORBA::is_nil (tlist[i]))
continue; // Skip nil references
// Read nominal temp and update it.
CCS::TempType tnom = tlist[i]->get_nominal ();
tnom += delta;
try {
tlist[i]->set_nominal (tnom);
}
catch (const CCS::Thermostat::BadTemp & bt) {
// If the update failed because the temperature
// is out of range, we add the thermostat's info
// to the errors sequence.
CORBA::ULong len = ec.errors.length ();
ec.errors.length (len + 1);
ec.errors[len].tmstat_ref = tlist[i];
ec.errors[len].info = bt.details;
}
}
// If we encountered errors in the above loop,
// we will have added elements to the errors sequence.
if (ec.errors.length () != 0)
throw ec;
}
// IDL find operation
void
Controller_impl::
find (CCS::Controller::SearchSeq & slist)
{
// Loop over input list and look up each device.
CORBA::ULong listlen = slist.length ();
for (CORBA::ULong i = 0; i < listlen; i++) {
AssetMap::iterator where; // Iterator for asset map
int num_found = 0; // Num matched per iteration
// Assume we will not find a matching device.
slist[i].device = CCS::Thermometer::_nil ();
// Work out whether we are searching by asset,
// model, or location.
CCS::Controller::SearchCriterion sc = slist[i].key._d ();
if (sc == CCS::Controller::ASSET) {
// Search for matching asset number.
where = m_assets.find (slist[i].key.asset_num ());
if (where != m_assets.end ())
slist[i].device = where->second->_this ();
} else {
// Search for model or location string.
const char * search_str;
if (sc == CCS::Controller::LOCATION)
search_str = slist[i].key.loc ();
else
search_str = slist[i].key.model_desc ();
// Find first matching device (if any).
where = std::find_if (
m_assets.begin (), m_assets.end (),
StrFinder (sc, search_str)
);
// While there are matches...
while (where != m_assets.end ()) {
if (num_found == 0) {
// First match overwrites reference
// in search record.
slist[i].device = where->second->_this ();
} else {
// Each further match appends a new
// element to the search sequence.
CORBA::ULong len = slist.length ();
slist.length (len + 1);
slist[len].key = slist[i].key;
slist[len].device = where->second->_this ();
}
num_found++;
// Find next matching device with this key.
where = std::find_if (
++where, m_assets.end (),
StrFinder (sc, search_str)
);
}
}
}
std::cerr << "end" << std::endl;
}
//----------------------------------------------------------------
int
ACE_TMAIN(int argc, ACE_TCHAR *argv[])
{
try {
// Initialize orb
CORBA::ORB_var orb = CORBA::ORB_init (argc, argv);
// Get reference to Root POA.
CORBA::Object_var obj
= orb->resolve_initial_references ("RootPOA");
PortableServer::POA_var poa
= PortableServer::POA::_narrow (obj.in ());
// Activate POA manager
PortableServer::POAManager_var mgr
= poa->the_POAManager ();
mgr->activate ();
// Create a controller and set static m_ctrl member
// for thermostats and thermometers.
Controller_impl ctrl_servant;
Thermometer_impl::m_ctrl = &ctrl_servant;
// Write controller stringified reference to stdout
CCS::Controller_var ctrl = ctrl_servant._this ();
CORBA::String_var str = orb->object_to_string (ctrl.in ());
std::cout << str.in () << std::endl << std::endl;
// Create a few devices. (Thermometers have odd asset
// numbers, thermostats have even asset numbers.)
Thermometer_impl thermo1 (2029, "Deep Thought");
Thermometer_impl thermo2 (8053, "HAL");
Thermometer_impl thermo3 (1027, "ENIAC");
Thermostat_impl tmstat1 (3032, "Colossus", 68);
Thermostat_impl tmstat2 (4026, "ENIAC", 60);
Thermostat_impl tmstat3 (4088, "ENIAC", 50);
Thermostat_impl tmstat4 (8042, "HAL", 40);
// Accept requests
orb->run ();
}
catch (const CORBA::Exception & e) {
std::cerr << "Uncaught CORBA exception: "
<< e
<< std::endl;
return 1;
}
catch (...) {
assert (0); // Unexpected exception, dump core
}
return 0;
}
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