blob: 940f60455401c4810434c08b10a8ecb55caf4874 [file] [log] [blame]
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (C) 2014 Named Data Networking Project
* See COPYING for copyright and distribution information.
*/
#include "fib.hpp"
#include "pit-entry.hpp"
#include "measurements-entry.hpp"
namespace nfd {
const shared_ptr<fib::Entry> Fib::s_emptyEntry = make_shared<fib::Entry>(Name());
Fib::Fib(NameTree& nameTree)
: m_nameTree(nameTree)
, m_nItems(0)
{
}
Fib::~Fib()
{
}
static inline bool
predicate_NameTreeEntry_hasFibEntry(const name_tree::Entry& entry)
{
return static_cast<bool>(entry.getFibEntry());
}
std::pair<shared_ptr<fib::Entry>, bool>
Fib::insert(const Name& prefix)
{
shared_ptr<name_tree::Entry> nameTreeEntry = m_nameTree.lookup(prefix);
shared_ptr<fib::Entry> entry = nameTreeEntry->getFibEntry();
if (static_cast<bool>(entry))
return std::make_pair(entry, false);
entry = make_shared<fib::Entry>(prefix);
nameTreeEntry->setFibEntry(entry);
++m_nItems;
return std::make_pair(entry, true);
}
shared_ptr<fib::Entry>
Fib::findLongestPrefixMatch(const Name& prefix) const
{
shared_ptr<name_tree::Entry> nameTreeEntry =
m_nameTree.findLongestPrefixMatch(prefix, &predicate_NameTreeEntry_hasFibEntry);
if (static_cast<bool>(nameTreeEntry)) {
return nameTreeEntry->getFibEntry();
}
return s_emptyEntry;
}
shared_ptr<fib::Entry>
Fib::findLongestPrefixMatch(shared_ptr<name_tree::Entry> nameTreeEntry) const
{
shared_ptr<fib::Entry> entry = nameTreeEntry->getFibEntry();
if (static_cast<bool>(entry))
return entry;
nameTreeEntry = m_nameTree.findLongestPrefixMatch(nameTreeEntry,
&predicate_NameTreeEntry_hasFibEntry);
if (static_cast<bool>(nameTreeEntry)) {
return nameTreeEntry->getFibEntry();
}
return s_emptyEntry;
}
shared_ptr<fib::Entry>
Fib::findLongestPrefixMatch(const pit::Entry& pitEntry) const
{
shared_ptr<name_tree::Entry> nameTreeEntry = m_nameTree.get(pitEntry);
BOOST_ASSERT(static_cast<bool>(nameTreeEntry));
return findLongestPrefixMatch(nameTreeEntry);
}
shared_ptr<fib::Entry>
Fib::findLongestPrefixMatch(const measurements::Entry& measurementsEntry) const
{
shared_ptr<name_tree::Entry> nameTreeEntry = m_nameTree.get(measurementsEntry);
BOOST_ASSERT(static_cast<bool>(nameTreeEntry));
return findLongestPrefixMatch(nameTreeEntry);
}
shared_ptr<fib::Entry>
Fib::findExactMatch(const Name& prefix) const
{
shared_ptr<name_tree::Entry> nameTreeEntry = m_nameTree.findExactMatch(prefix);
if (static_cast<bool>(nameTreeEntry))
return nameTreeEntry->getFibEntry();
return shared_ptr<fib::Entry>();
}
void
Fib::erase(const Name& prefix)
{
shared_ptr<name_tree::Entry> nameTreeEntry = m_nameTree.findExactMatch(prefix);
if (static_cast<bool>(nameTreeEntry))
{
nameTreeEntry->setFibEntry(shared_ptr<fib::Entry>());
--m_nItems;
}
}
void
Fib::erase(const fib::Entry& entry)
{
shared_ptr<name_tree::Entry> nameTreeEntry = m_nameTree.findExactMatch(entry);
if (static_cast<bool>(nameTreeEntry))
{
nameTreeEntry->setFibEntry(shared_ptr<fib::Entry>());
--m_nItems;
}
}
void
Fib::removeNextHopFromAllEntries(shared_ptr<Face> face)
{
for (NameTree::const_iterator it = m_nameTree.fullEnumerate(
&predicate_NameTreeEntry_hasFibEntry); it != m_nameTree.end(); ++it) {
shared_ptr<fib::Entry> entry = it->getFibEntry();
entry->removeNextHop(face);
if (!entry->hasNextHops()) {
this->erase(*entry);
}
}
}
} // namespace nfd