PurpleI2P
/
i2pd
mirror of https://github.com/PurpleI2P/i2pd.git
1
0
Fork 0
Code Issues Releases Activity
Browse Source

store RouterInfo in DHT

pull/1885/head
orignal 2 years ago
parent
ebee6c5f13
commit
abf687ff09
4 changed files with 177 additions and 72 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 211
      libi2pd/KadDHT.cpp
  2. 27
      libi2pd/KadDHT.h
  3. 7
      libi2pd/NetDb.cpp
  4. 2
      libi2pd/NetDb.hpp

211
libi2pd/KadDHT.cpp
Unescape View File

@ -14,7 +14,7 @@ namespace i2p @@ -14,7 +14,7 @@ namespace i2p
namespace data
{
DHTNode::DHTNode ():
zero (nullptr), one (nullptr), hash (nullptr)
zero (nullptr), one (nullptr)
{
}
@ -22,17 +22,16 @@ namespace data @@ -22,17 +22,16 @@ namespace data
{
if (zero) delete zero;
if (one) delete one;
if (hash) delete hash;
}
void DHTNode::MoveHashUp (bool fromOne)
void DHTNode::MoveRouterUp (bool fromOne)
{
DHTNode *& side = fromOne ? one : zero;
if (side)
{
if (hash) delete hash; // shouldn't happen
hash = side->hash;
side->hash = nullptr;
if (router) router = nullptr; // shouldn't happen
router = side->router;
side->router = nullptr;
delete side;
side = nullptr;
}
@ -49,38 +48,46 @@ namespace data @@ -49,38 +48,46 @@ namespace data
delete m_Root;
}
DHTNode * DHTTable::Insert (const IdentHash& h)
void DHTTable::Clear ()
{
return Insert (new IdentHash (h), m_Root, 0);
m_Size = 0;
delete m_Root;
m_Root = new DHTNode;
}
DHTNode * DHTTable::Insert (IdentHash * h, DHTNode * root, int level)
void DHTTable::Insert (const std::shared_ptr<RouterInfo>& r)
{
if (root->hash)
if (!r) return;
return Insert (r, m_Root, 0);
}
void DHTTable::Insert (const std::shared_ptr<RouterInfo>& r, DHTNode * root, int level)
{
if (root->router)
{
if (*(root->hash) == *h)
if (root->router->GetIdentHash () == r->GetIdentHash ())
{
delete h;
return root;
root->router = r; // replace
return;
}
auto h2 = root->hash;
root->hash = nullptr; m_Size--;
auto r2 = root->router;
root->router = nullptr; m_Size--;
int bit1, bit2;
do
{
bit1 = h->GetBit (level);
bit2 = h2->GetBit (level);
bit1 = r->GetIdentHash ().GetBit (level);
bit2 = r2->GetIdentHash ().GetBit (level);
if (bit1 == bit2)
{
if (bit1)
{
if (root->one) return nullptr; // someting wrong
if (root->one) return; // someting wrong
root->one = new DHTNode;
root = root->one;
}
else
{
if (root->zero) return nullptr; // someting wrong
if (root->zero) return; // someting wrong
root->zero = new DHTNode;
root = root->zero;
}
@ -95,37 +102,36 @@ namespace data @@ -95,37 +102,36 @@ namespace data
root->one = new DHTNode;
if (bit1)
{
Insert (h2, root->zero, level + 1);
return Insert (h, root->one, level + 1);
Insert (r2, root->zero, level + 1);
Insert (r, root->one, level + 1);
}
else
{
Insert (h2, root->one, level + 1);
return Insert (h, root->zero, level + 1);
Insert (r2, root->one, level + 1);
Insert (r, root->zero, level + 1);
}
}
else
{
if (!root->zero && !root->one)
{
root->hash = h; m_Size++;
return root;
root->router = r; m_Size++;
return;
}
int bit = h->GetBit (level);
int bit = r->GetIdentHash ().GetBit (level);
if (bit)
{
if (!root->one)
root->one = new DHTNode;
return Insert (h, root->one, level + 1);
Insert (r, root->one, level + 1);
}
else
{
if (!root->zero)
root->zero = new DHTNode;
return Insert (h, root->zero, level + 1);
Insert (r, root->zero, level + 1);
}
}
return nullptr;
}
bool DHTTable::Remove (const IdentHash& h)
@ -137,9 +143,9 @@ namespace data @@ -137,9 +143,9 @@ namespace data
{
if (root)
{
if (root->hash && *(root->hash) == h)
if (root->router && root->router->GetIdentHash () == h)
{
delete root->hash; root->hash = nullptr;
root->router = nullptr;
m_Size--;
return true;
}
@ -152,11 +158,11 @@ namespace data @@ -152,11 +158,11 @@ namespace data
{
delete root->one;
root->one = nullptr;
if (root->zero && root->zero->hash)
root->MoveHashUp (false);
if (root->zero && root->zero->router)
root->MoveRouterUp (false);
}
else if (root->one->hash && !root->zero)
root->MoveHashUp (true);
else if (root->one->router && !root->zero)
root->MoveRouterUp (true);
return true;
}
}
@ -168,11 +174,11 @@ namespace data @@ -168,11 +174,11 @@ namespace data
{
delete root->zero;
root->zero = nullptr;
if (root->one && root->one->hash)
root->MoveHashUp (true);
if (root->one && root->one->router)
root->MoveRouterUp (true);
}
else if (root->zero->hash && !root->one)
root->MoveHashUp (false);
else if (root->zero->router && !root->one)
root->MoveRouterUp (false);
return true;
}
}
@ -180,48 +186,95 @@ namespace data @@ -180,48 +186,95 @@ namespace data
return false;
}
IdentHash * DHTTable::FindClosest (const IdentHash& h)
std::shared_ptr<RouterInfo> DHTTable::FindClosest (const IdentHash& h, const Filter& filter)
{
return FindClosest (h, m_Root, 0);
if (filter) m_Filter = filter;
auto r = FindClosest (h, m_Root, 0);
m_Filter = nullptr;
return r;
}
IdentHash * DHTTable::FindClosest (const IdentHash& h, DHTNode * root, int level)
std::shared_ptr<RouterInfo> DHTTable::FindClosest (const IdentHash& h, DHTNode * root, int level)
{
if (root->hash) return root->hash;
bool split = false;
do
{
if (root->router)
return (!m_Filter || m_Filter (root->router)) ? root->router : nullptr;
split = root->zero && root->one;
if (!split)
{
if (root->zero) root = root->zero;
else if (root->one) root = root->one;
else return nullptr;
level++;
}
}
while (!split);
int bit = h.GetBit (level);
if (bit)
{
if (root->one)
return FindClosest (h, root->one, level + 1);
{
auto r = FindClosest (h, root->one, level + 1);
if (r) return r;
}
if (root->zero)
return FindClosest (h, root->zero, level + 1);
{
auto r = FindClosest (h, root->zero, level + 1);
if (r) return r;
}
}
else
{
if (root->zero)
return FindClosest (h, root->zero, level + 1);
{
auto r = FindClosest (h, root->zero, level + 1);
if (r) return r;
}
if (root->one)
return FindClosest (h, root->one, level + 1);
{
auto r = FindClosest (h, root->one, level + 1);
if (r) return r;
}
}
return nullptr;
}
std::vector<IdentHash *> DHTTable::FindClosest (const IdentHash& h, size_t num)
std::vector<std::shared_ptr<RouterInfo> > DHTTable::FindClosest (const IdentHash& h, size_t num, const Filter& filter)
{
std::vector<IdentHash *> vec;
std::vector<std::shared_ptr<RouterInfo> > vec;
if (num > 0)
{
if (filter) m_Filter = filter;
FindClosest (h, num, m_Root, 0, vec);
m_Filter = nullptr;
}
return vec;
}
void DHTTable::FindClosest (const IdentHash& h, size_t num, DHTNode * root, int level, std::vector<IdentHash *>& hashes)
void DHTTable::FindClosest (const IdentHash& h, size_t num, DHTNode * root, int level, std::vector<std::shared_ptr<RouterInfo> >& hashes)
{
if (hashes.size () >= num) return;
if (root->hash)
bool split = false;
do
{
hashes.push_back (root->hash);
return;
if (root->router)
{
if (!m_Filter || m_Filter (root->router))
hashes.push_back (root->router);
return;
}
split = root->zero && root->one;
if (!split)
{
if (root->zero) root = root->zero;
else if (root->one) root = root->one;
else return;
level++;
}
}
while (!split);
int bit = h.GetBit (level);
if (bit)
{
@ -239,6 +292,54 @@ namespace data @@ -239,6 +292,54 @@ namespace data
}
}
void DHTTable::Cleanup (Filter filter)
{
if (filter)
{
m_Filter = filter;
Cleanup (m_Root);
m_Filter = nullptr;
}
else
Clear ();
}
void DHTTable::Cleanup (DHTNode * root)
{
if (!root) return;
if (root->router)
{
if (!m_Filter || !m_Filter (root->router))
{
m_Size--;
root->router = nullptr;
}
return;
}
if (root->zero)
{
Cleanup (root->zero);
if (root->zero->IsEmpty ())
{
delete root->zero;
root->zero = nullptr;
}
}
if (root->one)
{
Cleanup (root->one);
if (root->one->IsEmpty ())
{
delete root->one;
root->one = nullptr;
if (root->zero && root->zero->router)
root->MoveRouterUp (false);
}
else if (root->one->router && !root->zero)
root->MoveRouterUp (true);
}
}
void DHTTable::Print (std::stringstream& s)
{
Print (s, m_Root, 0);
@ -248,10 +349,10 @@ namespace data @@ -248,10 +349,10 @@ namespace data
{
if (!root) return;
s << std::string (level, '-');
if (root->hash)
if (root->router)
{
if (!root->zero && !root->one)
s << '>' << GetIdentHashAbbreviation (*(root->hash));
s << '>' << GetIdentHashAbbreviation (root->router->GetIdentHash ());
else
s << "error";
}

27
libi2pd/KadDHT.h
Unescape View File

@ -13,7 +13,8 @@ @@ -13,7 +13,8 @@
#include <memory>
#include <vector>
#include <sstream>
#include "Identity.h"
#include <functional>
#include "RouterInfo.h"
// Kademlia DHT (XOR distance)
@ -24,42 +25,48 @@ namespace data @@ -24,42 +25,48 @@ namespace data
struct DHTNode
{
DHTNode * zero, * one;
IdentHash * hash;
std::shared_ptr<RouterInfo> router;
DHTNode ();
~DHTNode ();
bool IsEmpty () const { return !zero && !one && !hash; };
void MoveHashUp (bool fromOne);
bool IsEmpty () const { return !zero && !one && !router; };
void MoveRouterUp (bool fromOne);
};
class DHTTable
{
typedef std::function<bool (const std::shared_ptr<RouterInfo>&)> Filter;
public:
DHTTable ();
~DHTTable ();
DHTNode * Insert (const IdentHash& h);
void Insert (const std::shared_ptr<RouterInfo>& r);
bool Remove (const IdentHash& h);
IdentHash * FindClosest (const IdentHash& h);
std::vector<IdentHash *> FindClosest (const IdentHash& h, size_t num);
std::shared_ptr<RouterInfo> FindClosest (const IdentHash& h, const Filter& filter = nullptr);
std::vector<std::shared_ptr<RouterInfo> > FindClosest (const IdentHash& h, size_t num, const Filter& filter = nullptr);
void Print (std::stringstream& s);
size_t GetSize () const { return m_Size; };
void Clear ();
void Cleanup (Filter filter);
private:
DHTNode * Insert (IdentHash * h, DHTNode * root, int level); // recursive
void Insert (const std::shared_ptr<RouterInfo>& r, DHTNode * root, int level); // recursive
bool Remove (const IdentHash& h, DHTNode * root, int level);
IdentHash * FindClosest (const IdentHash& h, DHTNode * root, int level);
void FindClosest (const IdentHash& h, size_t num, DHTNode * root, int level, std::vector<IdentHash *>& hashes);
std::shared_ptr<RouterInfo> FindClosest (const IdentHash& h, DHTNode * root, int level);
void FindClosest (const IdentHash& h, size_t num, DHTNode * root, int level, std::vector<std::shared_ptr<RouterInfo> >& hashes);
void Cleanup (DHTNode * root);
void Print (std::stringstream& s, DHTNode * root, int level);
private:
DHTNode * m_Root;
size_t m_Size;
// transient
Filter m_Filter;
};
}
}

7
libi2pd/NetDb.cpp
Unescape View File

@ -1355,15 +1355,12 @@ namespace data @@ -1355,15 +1355,12 @@ namespace data
}
std::shared_ptr<const RouterInfo> NetDb::GetClosestFloodfill (const IdentHash& destination,
const std::set<IdentHash>& excluded, bool closeThanUsOnly) const
const std::set<IdentHash>& excluded) const
{
std::shared_ptr<const RouterInfo> r;
XORMetric minMetric;
IdentHash destKey = CreateRoutingKey (destination);
if (closeThanUsOnly)
minMetric = destKey ^ i2p::context.GetIdentHash ();
else
minMetric.SetMax ();
minMetric.SetMax ();
std::unique_lock<std::mutex> l(m_FloodfillsMutex);
for (const auto& it: m_Floodfills)
{

2
libi2pd/NetDb.hpp
Unescape View File

@ -93,7 +93,7 @@ namespace data @@ -93,7 +93,7 @@ namespace data
std::shared_ptr<const RouterInfo> GetHighBandwidthRandomRouter (std::shared_ptr<const RouterInfo> compatibleWith, bool reverse) const;
std::shared_ptr<const RouterInfo> GetRandomSSU2PeerTestRouter (bool v4, const std::set<IdentHash>& excluded) const;
std::shared_ptr<const RouterInfo> GetRandomSSU2Introducer (bool v4, const std::set<IdentHash>& excluded) const;
std::shared_ptr<const RouterInfo> GetClosestFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded, bool closeThanUsOnly = false) 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,
std::set<IdentHash>& excluded, bool closeThanUsOnly = false) const;
std::shared_ptr<const RouterInfo> GetClosestNonFloodfill (const IdentHash& destination, const std::set<IdentHash>& excluded) const;

Write Preview
Loading…
Cancel
Save