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GetClosestFloodfills added

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orignal 2015-04-10 16:15:13 -04:00
parent 2741e94a72
commit 2a997d94bf
2 changed files with 45 additions and 0 deletions
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44
NetDb.cpp
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@ -922,6 +922,50 @@ namespace data
return r;
}
std::vector<IdentHash> NetDb::GetClosestFloodfills (const IdentHash& destination, size_t num) const
{
struct Sorted
{
std::shared_ptr<const RouterInfo> r;
XORMetric metric;
bool operator< (const Sorted& other) const { return metric < other.metric; };
};
std::set<Sorted> sorted;
IdentHash destKey = CreateRoutingKey (destination);
{
std::unique_lock<std::mutex> l(m_FloodfillsMutex);
for (auto it: m_Floodfills)
{
if (!it->IsUnreachable ())
{
XORMetric m = destKey ^ it->GetIdentHash ();
if (sorted.size () < num)
sorted.insert ({it, m});
else if (m < sorted.rbegin ()->metric)
{
sorted.insert ({it, m});
sorted.erase (std::prev (sorted.end ()));
}
}
}
}
std::vector<IdentHash> res;
size_t i = 0;
for (auto it: sorted)
{
if (i < num)
{
res.push_back (it.r->GetIdentHash ());
i++;
}
else
break;
}
return res;
}
std::shared_ptr<const RouterInfo> NetDb::GetClosestNonFloodfill (const IdentHash& destination,
const std::set<IdentHash>& excluded) const
{

1
NetDb.h
View file

@ -51,6 +51,7 @@ namespace data
std::shared_ptr<const RouterInfo> GetRandomPeerTestRouter () const;
std::shared_ptr<const RouterInfo> GetRandomIntroducer () const;
std::shared_ptr<const RouterInfo> GetClosestFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded) const;
std::vector<IdentHash> GetClosestFloodfills (const IdentHash& destination, size_t num) const;
std::shared_ptr<const RouterInfo> GetClosestNonFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded) const;
void SetUnreachable (const IdentHash& ident, bool unreachable);