mirror of https://github.com/PurpleI2P/i2pd
NetDb/NetDbRequests split
orignal
9 years ago
parent
01913d2b14
commit
950f250d66
@ -0,0 +1,149 @@
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#include "Log.h"
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#include "I2NPProtocol.h"
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#include "Transports.h"
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#include "NetDb.h"
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#include "NetDbRequests.h"
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namespace i2p
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{
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namespace data
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{
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I2NPMessage * RequestedDestination::CreateRequestMessage (std::shared_ptr<const RouterInfo> router,
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std::shared_ptr<const i2p::tunnel::InboundTunnel> replyTunnel)
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{
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I2NPMessage * msg = i2p::CreateRouterInfoDatabaseLookupMsg (m_Destination,
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replyTunnel->GetNextIdentHash (), replyTunnel->GetNextTunnelID (), m_IsExploratory,
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&m_ExcludedPeers);
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m_ExcludedPeers.insert (router->GetIdentHash ());
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m_CreationTime = i2p::util::GetSecondsSinceEpoch ();
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return msg;
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}
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I2NPMessage * RequestedDestination::CreateRequestMessage (const IdentHash& floodfill)
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{
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I2NPMessage * msg = i2p::CreateRouterInfoDatabaseLookupMsg (m_Destination,
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i2p::context.GetRouterInfo ().GetIdentHash () , 0, false, &m_ExcludedPeers);
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m_ExcludedPeers.insert (floodfill);
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m_CreationTime = i2p::util::GetSecondsSinceEpoch ();
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return msg;
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}
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void RequestedDestination::ClearExcludedPeers ()
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{
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m_ExcludedPeers.clear ();
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}
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void RequestedDestination::Success (std::shared_ptr<RouterInfo> r)
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{
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if (m_RequestComplete)
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{
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m_RequestComplete (r);
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m_RequestComplete = nullptr;
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}
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}
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void RequestedDestination::Fail ()
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{
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if (m_RequestComplete)
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{
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m_RequestComplete (nullptr);
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m_RequestComplete = nullptr;
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}
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}
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void NetDbRequests::Start ()
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{
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}
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void NetDbRequests::Stop ()
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{
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m_RequestedDestinations.clear ();
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}
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std::shared_ptr<RequestedDestination> NetDbRequests::CreateRequest (const IdentHash& destination, bool isExploratory, RequestedDestination::RequestComplete requestComplete)
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{
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// request RouterInfo directly
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auto dest = std::make_shared<RequestedDestination> (destination, isExploratory);
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dest->SetRequestComplete (requestComplete);
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{
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std::unique_lock<std::mutex> l(m_RequestedDestinationsMutex);
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if (!m_RequestedDestinations.insert (std::make_pair (destination,
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std::shared_ptr<RequestedDestination> (dest))).second) // not inserted
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return nullptr;
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}
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return dest;
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}
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void NetDbRequests::RequestComplete (const IdentHash& ident, std::shared_ptr<RouterInfo> r)
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{
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auto it = m_RequestedDestinations.find (ident);
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if (it != m_RequestedDestinations.end ())
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{
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if (r)
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it->second->Success (r);
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else
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it->second->Fail ();
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std::unique_lock<std::mutex> l(m_RequestedDestinationsMutex);
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m_RequestedDestinations.erase (it);
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}
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}
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std::shared_ptr<RequestedDestination> NetDbRequests::FindRequest (const IdentHash& ident) const
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{
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auto it = m_RequestedDestinations.find (ident);
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if (it != m_RequestedDestinations.end ())
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return it->second;
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return nullptr;
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}
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void NetDbRequests::ManageRequests ()
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{
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uint64_t ts = i2p::util::GetSecondsSinceEpoch ();
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std::unique_lock<std::mutex> l(m_RequestedDestinationsMutex);
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for (auto it = m_RequestedDestinations.begin (); it != m_RequestedDestinations.end ();)
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{
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auto& dest = it->second;
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bool done = false;
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if (ts < dest->GetCreationTime () + 60) // request is worthless after 1 minute
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{
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if (ts > dest->GetCreationTime () + 5) // no response for 5 seconds
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{
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auto count = dest->GetExcludedPeers ().size ();
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if (!dest->IsExploratory () && count < 7)
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{
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auto pool = i2p::tunnel::tunnels.GetExploratoryPool ();
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auto outbound = pool->GetNextOutboundTunnel ();
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auto inbound = pool->GetNextInboundTunnel ();
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auto nextFloodfill = netdb.GetClosestFloodfill (dest->GetDestination (), dest->GetExcludedPeers ());
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if (nextFloodfill && outbound && inbound)
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outbound->SendTunnelDataMsg (nextFloodfill->GetIdentHash (), 0,
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dest->CreateRequestMessage (nextFloodfill, inbound));
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else
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{
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done = true;
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if (!inbound) LogPrint (eLogWarning, "No inbound tunnels");
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if (!outbound) LogPrint (eLogWarning, "No outbound tunnels");
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if (!nextFloodfill) LogPrint (eLogWarning, "No more floodfills");
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}
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}
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else
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{
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if (!dest->IsExploratory ())
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LogPrint (eLogWarning, dest->GetDestination ().ToBase64 (), " not found after 7 attempts");
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done = true;
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}
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}
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}
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else // delete obsolete request
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done = true;
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if (done)
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it = m_RequestedDestinations.erase (it);
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else
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it++;
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}
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}
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}
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}
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@ -0,0 +1,69 @@
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#ifndef NETDB_REQUESTS_H__
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#define NETDB_REQUESTS_H__
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#include <memory>
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#include <set>
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#include <map>
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#include "Identity.h"
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#include "RouterInfo.h"
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namespace i2p
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{
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namespace data
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{
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class RequestedDestination
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{
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public:
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typedef std::function<void (std::shared_ptr<RouterInfo>)> RequestComplete;
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RequestedDestination (const IdentHash& destination, bool isExploratory = false):
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m_Destination (destination), m_IsExploratory (isExploratory), m_CreationTime (0) {};
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~RequestedDestination () { if (m_RequestComplete) m_RequestComplete (nullptr); };
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const IdentHash& GetDestination () const { return m_Destination; };
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int GetNumExcludedPeers () const { return m_ExcludedPeers.size (); };
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const std::set<IdentHash>& GetExcludedPeers () { return m_ExcludedPeers; };
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void ClearExcludedPeers ();
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bool IsExploratory () const { return m_IsExploratory; };
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bool IsExcluded (const IdentHash& ident) const { return m_ExcludedPeers.count (ident); };
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uint64_t GetCreationTime () const { return m_CreationTime; };
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I2NPMessage * CreateRequestMessage (std::shared_ptr<const RouterInfo>, std::shared_ptr<const i2p::tunnel::InboundTunnel> replyTunnel);
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I2NPMessage * CreateRequestMessage (const IdentHash& floodfill);
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void SetRequestComplete (const RequestComplete& requestComplete) { m_RequestComplete = requestComplete; };
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bool IsRequestComplete () const { return m_RequestComplete != nullptr; };
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void Success (std::shared_ptr<RouterInfo> r);
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void Fail ();
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private:
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IdentHash m_Destination;
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bool m_IsExploratory;
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std::set<IdentHash> m_ExcludedPeers;
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uint64_t m_CreationTime;
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RequestComplete m_RequestComplete;
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};
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class NetDbRequests
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{
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public:
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void Start ();
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void Stop ();
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std::shared_ptr<RequestedDestination> CreateRequest (const IdentHash& destination, bool isExploratory, RequestedDestination::RequestComplete requestComplete = nullptr);
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void RequestComplete (const IdentHash& ident, std::shared_ptr<RouterInfo> r);
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std::shared_ptr<RequestedDestination> FindRequest (const IdentHash& ident) const;
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void ManageRequests ();
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private:
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std::mutex m_RequestedDestinationsMutex;
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std::map<IdentHash, std::shared_ptr<RequestedDestination> > m_RequestedDestinations;
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};
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}
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}
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#endif
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