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114 lines
2.5 KiB
C++
114 lines
2.5 KiB
C++
#pragma once
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#include <llarp/routing/message.hpp>
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#include "intro_set.hpp"
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#include <llarp/path/pathset.hpp>
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#include <llarp/endpoint_base.hpp>
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#include <set>
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namespace llarp
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{
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// forward declare
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namespace path
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{
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struct Path;
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}
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namespace service
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{
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struct ILookupHolder;
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constexpr size_t MaxConcurrentLookups = size_t(16);
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struct IServiceLookup
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{
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IServiceLookup() = delete;
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virtual ~IServiceLookup() = default;
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/// handle lookup result for introsets
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virtual bool
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HandleIntrosetResponse(const std::set<EncryptedIntroSet>&)
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{
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return false;
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}
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/// handle lookup result for introsets
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virtual bool
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HandleNameResponse(std::optional<Address>)
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{
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return false;
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}
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virtual void
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HandleTimeout()
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{
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HandleIntrosetResponse({});
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}
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/// determine if this request has timed out
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bool
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IsTimedOut(llarp_time_t now) const
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{
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return TimeLeft(now) == 0ms;
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}
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/// return how long this request has left to be fufilled
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llarp_time_t
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TimeLeft(llarp_time_t now) const
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{
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if (now > (m_created + m_timeout))
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return 0s;
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return now - (m_created + m_timeout);
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}
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/// build request message for service lookup
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virtual std::shared_ptr<routing::IMessage>
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BuildRequestMessage() = 0;
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/// build a new request message and send it via a path
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virtual bool
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SendRequestViaPath(path::Path_ptr p, AbstractRouter* r);
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ILookupHolder* m_parent;
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uint64_t txid;
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const std::string name;
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RouterID endpoint;
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/// return true if this lookup is for a remote address
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virtual bool
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IsFor(EndpointBase::AddressVariant_t) const
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{
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return false;
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}
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util::StatusObject
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ExtractStatus() const
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{
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auto now = time_now_ms();
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util::StatusObject obj{
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{"txid", txid},
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{"endpoint", endpoint.ToHex()},
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{"name", name},
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{"timedOut", IsTimedOut(now)},
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{"createdAt", m_created.count()}};
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return obj;
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}
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protected:
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IServiceLookup(
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ILookupHolder* parent, uint64_t tx, std::string name, llarp_time_t timeout = 10s);
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const llarp_time_t m_created, m_timeout;
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};
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struct ILookupHolder
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{
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virtual void
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PutLookup(IServiceLookup* l, uint64_t txid) = 0;
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};
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} // namespace service
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} // namespace llarp
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