void LogComponentSettings::setMinimumLoggedSeverity(LogComponent component, LogSeverity severity) {
dassert(int(component) >= 0 && int(component) < LogComponent::kNumLogComponents);
_minimumLoggedSeverity[component] = char(severity.toInt());
_hasMinimumLoggedSeverity[component] = true;
// Every unconfigured component will inherit log severity from parent.
// Traversing the severity array once works because child components always
// come after the parent in the LogComponent::Value enumeration.
for (int i = 0; i < int(LogComponent::kNumLogComponents); ++i) {
if (!_hasMinimumLoggedSeverity[i]) {
LogComponent::Value v = LogComponent::Value(i);
LogComponent parentComponent = LogComponent(v).parent();
LogSeverity parentSeverity = getMinimumLogSeverity(parentComponent);
_minimumLoggedSeverity[i] = char(parentSeverity.toInt());
}
}
}
namespace cs {
/**
* @ingroup ndn-cs
* @brief Special content store realization that provides ability to track stats of CS operations
*/
template<class Policy>
class ContentStoreWithStats
: public ContentStoreImpl<ndnSIM::
multi_policy_traits<boost::mpl::
vector2<Policy,
ndnSIM::
lifetime_stats_policy_traits>>> {
public:
typedef ContentStoreImpl<ndnSIM::
multi_policy_traits<boost::mpl::
vector2<Policy,
ndnSIM::lifetime_stats_policy_traits>>>
super;
typedef typename super::policy_container::template index<1>::type lifetime_stats_container;
ContentStoreWithStats()
{
// connect traceback to the policy
super::getPolicy().template get<1>().set_traced_callback(&m_willRemoveEntry);
}
static TypeId
GetTypeId();
virtual inline void
Print(std::ostream& os) const;
public:
typedef void (*RemoveCsEntryCallback)(Ptr<const Entry>, Time);
private:
static LogComponent g_log; ///< @brief Logging variable
/// @brief trace of for entry removal: first parameter is pointer to the CS entry, second is how
/// long entry was in the cache
TracedCallback<Ptr<const Entry>, Time> m_willRemoveEntry;
};
//////////////////////////////////////////
////////// Implementation ////////////////
//////////////////////////////////////////
template<class Policy>
LogComponent ContentStoreWithStats<Policy>::g_log = LogComponent(("ndn.cs.Stats."
+ Policy::GetName()).c_str(), __FILE__);
template<class Policy>
TypeId
ContentStoreWithStats<Policy>::GetTypeId()
{
static TypeId tid =
TypeId(("ns3::ndn::cs::Stats::" + Policy::GetName()).c_str())
.SetGroupName("Ndn")
.SetParent<super>()
.template AddConstructor<ContentStoreWithStats<Policy>>()
.AddTraceSource("WillRemoveEntry",
"Trace called just before content store entry will be removed",
MakeTraceSourceAccessor(&ContentStoreWithStats<Policy>::m_willRemoveEntry),
"ns3::ndn::cs::ContentStoreWithStats::RemoveCsEntryCallback")
// trace stuff here
;
return tid;
}
template<class Policy>
void
ContentStoreWithStats<Policy>::Print(std::ostream& os) const
{
// const freshness_policy_container &freshness = this->getPolicy ().template
// get<freshness_policy_container> ();
for (typename super::policy_container::const_iterator item = this->getPolicy().begin();
item != this->getPolicy().end(); item++) {
Time alive = lifetime_stats_container::policy_base::get_time(&(*item)) - Simulator::Now();
os << item->payload()->GetName() << "(alive: " << alive.ToDouble(Time::S) << "s)" << std::endl;
}
}
} // namespace cs
namespace cs {
/**
* @ingroup ndn-cs
* @brief Cache entry implementation with additional references to the base container
*/
template<class CS>
class EntryImpl : public Entry {
public:
typedef Entry base_type;
public:
EntryImpl(Ptr<ContentStore> cs, shared_ptr<const Data> data)
: Entry(cs, data)
, item_(0)
{
}
void
SetTrie(typename CS::super::iterator item)
{
item_ = item;
}
typename CS::super::iterator
to_iterator()
{
return item_;
}
typename CS::super::const_iterator
to_iterator() const
{
return item_;
}
private:
typename CS::super::iterator item_;
};
/**
* @ingroup ndn-cs
* @brief Base implementation of NDN content store
*/
template<class Policy>
class ContentStoreImpl
: public ContentStore,
protected ndnSIM::
trie_with_policy<Name,
ndnSIM::smart_pointer_payload_traits<EntryImpl<ContentStoreImpl<Policy>>,
Entry>,
Policy> {
public:
typedef ndnSIM::
trie_with_policy<Name, ndnSIM::smart_pointer_payload_traits<EntryImpl<ContentStoreImpl<Policy>>,
Entry>,
Policy> super;
typedef EntryImpl<ContentStoreImpl<Policy>> entry;
static TypeId
GetTypeId();
ContentStoreImpl(){};
virtual ~ContentStoreImpl(){};
// from ContentStore
virtual inline shared_ptr<Data>
Lookup(shared_ptr<const Interest> interest);
virtual inline bool
Add(shared_ptr<const Data> data);
// virtual bool
// Remove (shared_ptr<Interest> header);
virtual inline void
Print(std::ostream& os) const;
virtual uint32_t
GetSize() const;
virtual Ptr<Entry>
Begin();
virtual Ptr<Entry>
End();
virtual Ptr<Entry> Next(Ptr<Entry>);
const typename super::policy_container&
GetPolicy() const
{
return super::getPolicy();
}
typename super::policy_container&
GetPolicy()
{
return super::getPolicy();
}
private:
void
SetMaxSize(uint32_t maxSize);
uint32_t
GetMaxSize() const;
private:
static LogComponent g_log; ///< @brief Logging variable
/// @brief trace of for entry additions (fired every time entry is successfully added to the
/// cache): first parameter is pointer to the CS entry
TracedCallback<Ptr<const Entry>> m_didAddEntry;
};
//////////////////////////////////////////
////////// Implementation ////////////////
//////////////////////////////////////////
template<class Policy>
LogComponent
ContentStoreImpl<Policy>::g_log = LogComponent(("ndn.cs." + Policy::GetName()).c_str());
template<class Policy>
TypeId
ContentStoreImpl<Policy>::GetTypeId()
{
static TypeId tid =
TypeId(("ns3::ndn::cs::" + Policy::GetName()).c_str())
.SetGroupName("Ndn")
.SetParent<ContentStore>()
.AddConstructor<ContentStoreImpl<Policy>>()
.AddAttribute("MaxSize",
"Set maximum number of entries in ContentStore. If 0, limit is not enforced",
StringValue("100"), MakeUintegerAccessor(&ContentStoreImpl<Policy>::GetMaxSize,
&ContentStoreImpl<Policy>::SetMaxSize),
MakeUintegerChecker<uint32_t>())
.AddTraceSource("DidAddEntry",
"Trace fired every time entry is successfully added to the cache",
MakeTraceSourceAccessor(&ContentStoreImpl<Policy>::m_didAddEntry));
return tid;
}
struct isNotExcluded {
inline isNotExcluded(const Exclude& exclude)
: m_exclude(exclude)
{
}
bool
operator()(const name::Component& comp) const
{
return !m_exclude.isExcluded(comp);
}
private:
const Exclude& m_exclude;
};
template<class Policy>
shared_ptr<Data>
ContentStoreImpl<Policy>::Lookup(shared_ptr<const Interest> interest)
{
NS_LOG_FUNCTION(this << interest->getName());
typename super::const_iterator node;
if (interest->getExclude().empty()) {
node = this->deepest_prefix_match(interest->getName());
}
else {
node = this->deepest_prefix_match_if_next_level(interest->getName(),
isNotExcluded(interest->getExclude()));
}
if (node != this->end()) {
this->m_cacheHitsTrace(interest, node->payload()->GetData());
shared_ptr<Data> copy = make_shared<Data>(*node->payload()->GetData());
return copy;
}
else {
this->m_cacheMissesTrace(interest);
return 0;
}
}
template<class Policy>
bool
ContentStoreImpl<Policy>::Add(shared_ptr<const Data> data)
{
NS_LOG_FUNCTION(this << data->getName());
Ptr<entry> newEntry = Create<entry>(this, data);
std::pair<typename super::iterator, bool> result = super::insert(data->getName(), newEntry);
if (result.first != super::end()) {
if (result.second) {
newEntry->SetTrie(result.first);
m_didAddEntry(newEntry);
return true;
}
else {
// should we do anything?
// update payload? add new payload?
return false;
}
}
else
return false; // cannot insert entry
}
template<class Policy>
void
ContentStoreImpl<Policy>::Print(std::ostream& os) const
{
for (typename super::policy_container::const_iterator item = this->getPolicy().begin();
item != this->getPolicy().end(); item++) {
os << item->payload ()->GetName () << std::endl;
}
}
template<class Policy>
void
ContentStoreImpl<Policy>::SetMaxSize(uint32_t maxSize)
{
this->getPolicy().set_max_size(maxSize);
}
template<class Policy>
uint32_t
ContentStoreImpl<Policy>::GetMaxSize() const
{
return this->getPolicy().get_max_size();
}
template<class Policy>
uint32_t
ContentStoreImpl<Policy>::GetSize() const
{
return this->getPolicy().size();
}
template<class Policy>
Ptr<Entry>
ContentStoreImpl<Policy>::Begin()
{
typename super::parent_trie::recursive_iterator item(super::getTrie()), end(0);
for (; item != end; item++) {
if (item->payload() == 0)
continue;
break;
}
if (item == end)
return End();
else
return item->payload();
}
template<class Policy>
Ptr<Entry>
ContentStoreImpl<Policy>::End()
{
return 0;
}
template<class Policy>
Ptr<Entry>
ContentStoreImpl<Policy>::Next(Ptr<Entry> from)
{
if (from == 0)
return 0;
typename super::parent_trie::recursive_iterator item(*StaticCast<entry>(from)->to_iterator()),
end(0);
for (item++; item != end; item++) {
if (item->payload() == 0)
continue;
break;
}
if (item == end)
return End();
else
return item->payload();
}
} // namespace cs
