bool RoutingCompiler::classifyRoutingRules::processNext()
{
assert(compiler!=NULL);
assert(prev_processor!=NULL);
slurp();
if (tmp_queue.size()==0) return false;
for (std::deque<libfwbuilder::Rule *>::iterator tmp_queue_it=tmp_queue.begin(); tmp_queue_it!=tmp_queue.end(); ++tmp_queue_it)
{
RoutingRule *rule = RoutingRule::cast( *tmp_queue_it);
rule->setRuleType( RoutingRule::SinglePath);
RuleElementRItf *itfrel=rule->getRItf();
FWObject *itf = FWReference::cast(itfrel->front())->getPointer();
RuleElementRGtw *gtwrel=rule->getRGtw();
FWObject *gtw = FWReference::cast(gtwrel->front())->getPointer();
string metric = rule->getMetricAsString();
string label = rule->getSortedDstIds();
ostringstream ostr;
ostr << gtw->getId() << "_" << itf->getId();
string combiId = ostr.str();
if( label == "")
compiler->abort(
rule,
"Place 'createSortedDstIdsLabel()' right before "
"'classifyRoutingRules()' in the rule processor chain");
dest_it = rules_seen_so_far.find(label);
if( dest_it != rules_seen_so_far.end()) {
// a rule with the same destination was already seen
//std::cout << "classifyRoutingRules:NO NEW DEST" << std::endl;///
gtwitf_it = dest_it->second.find(combiId);
if( gtwitf_it == dest_it->second.end() ) {
// ... this gateway and interface combination is new for this destination
//std::cout << "classifyRoutingRules:NEW GTWITF" << std::endl;///
for( gtwitf_it = dest_it->second.begin(); gtwitf_it != dest_it->second.end(); gtwitf_it++) {
if( gtwitf_it->second.first == metric) {
// ... but has the same metric as another rule with this Dst => multipath or abort
//std::cout << "classifyRoutingRules:SAME METRIC" << std::endl;///
if(true) { //TODO: if ( compiler->fw->getOptionsObject()->getBool ("equal_cost_multi_path") )
rule->setRuleType( RoutingRule::MultiPath);
gtwitf_it->second.second->setRuleType( RoutingRule::MultiPath);
//std::cout << "classifyRoutingRules:the rules " << rule->getLabel() << " and " << gtwitf_it->second.second->getLabel() << " were set to multipath." << std::endl;///
}
}
}
dest_it->second[combiId] = pair< string, RoutingRule*>( metric, rule);
}
} else {
// this destination is new
//std::cout << "classifyRoutingRules:NEW DEST" << std::endl;///
map< string, pair< string, RoutingRule*> > gtw_itf_tmp;
gtw_itf_tmp[combiId] = pair< string, RoutingRule*>( metric, rule);
rules_seen_so_far[label] = gtw_itf_tmp;
}
}
return true;
}
bool RoutingCompiler::competingRules::processNext()
{
RoutingRule *rule = getNext(); if (rule==NULL) return false;
RuleElementRItf *itfrel = rule->getRItf();
FWObject *itf = FWReference::cast(itfrel->front())->getPointer();
RuleElementRGtw *gtwrel = rule->getRGtw();
FWObject *gtw = FWReference::cast(gtwrel->front())->getPointer();
string metric = rule->getMetricAsString();
string label = rule->getSortedDstIds();
ostringstream ostr;
ostr << gtw->getId() << "_" << itf->getId();
string combiId = ostr.str();
if( label == "") compiler->abort(
rule,
"Place 'createSortedDstIdsLabel()' before 'competingRules()' "
"in the rule processor chain");
dest_it = rules_seen_so_far.find(label);
if( dest_it != rules_seen_so_far.end()) {
// a rule with the same destination was already seen
///std::cout << "NO NEW DEST" << std::endl;
gtwitf_it = dest_it->second.find(combiId);
if( gtwitf_it != dest_it->second.end() )
{
// ... this gateway and interface combination were already
// seen for this destination
///std::cout << "NO NEW GTWITF" << std::endl;
if( gtwitf_it->second.first == metric) {
// ... and same metric => rule already exists, skip
///std::cout << "SAME METRIC" << std::endl;
string msg;
msg = "Routing rules " + gtwitf_it->second.second +
" and " + rule->getLabel() +
" are identical, skipping the second one. " +
"Delete one of them to avoid this warning";
compiler->warning(rule, msg.c_str());
} else {
// ... but different metric => what metric should I use? => abort
///std::cout << "DIFFERENT METRIC" << std::endl;
string msg;
msg = "Routing rules " + gtwitf_it->second.second +
" and " + rule->getLabel() +
" are identical except for the metric, " +
"please delete one of them";
compiler->abort(rule, msg.c_str());
}
} else
{
// ... this gateway and interface combination is new for
// this destination
///std::cout << "NEW GTWITF" << std::endl;///
if(false)
{
// TODO_lowPrio: if (
// !compiler->fw->getOptionsObject()->getBool
// ("equal_cost_multi_path") ) ...If multipath is
// turned off, perform this check.
// iterate all gtwitf combis in the map
// dest_it->second and search for the current metric
// ... but has the same metric => what route should I
// use for this destination? => abort
string msg;
msg = "Routing rules " + gtwitf_it->second.second + " and " +
rule->getLabel() +
" have the same destination and same metric,"
"but different gateway and interface combination. "
"Set the metrics to different values or "
"enable ECMP (Equal Cost MultiPath) routing";
compiler->abort( msg.c_str() );
} else
{
// ... and different metric OR equal_cost_multi_path enabled => OK
tmp_queue.push_back(rule);
}
dest_it->second[combiId] =
pair< string, string>( metric, rule->getLabel());
}
} else {
// this destination is new
//std::cout << "NEW DEST" << std::endl;
///
//ruleinfo tmpRuleInfo = { gtw->getStr("id") + itf->getStr("id"), metric, rule->getLabel()};
//rules_seen_so_far[label] = tmpRuleInfo;
map< string, pair< string, string> > gtw_itf_tmp;
gtw_itf_tmp[combiId] = pair< string, string>( metric, rule->getLabel());
rules_seen_so_far[label] = gtw_itf_tmp;
tmp_queue.push_back(rule);
}
return true;
}