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lokinet/llarp/dht/tx.hpp
Jason Rhinelander b81f7025c9
Replace logging with oxen-logger
Replaces custom logging system with spdlog-based oxen logging.  This
commit mainly replaces the backend logging with the spdlog-based system,
but doesn't (yet) convert all the existing LogWarn, etc. to use the new
format-based logging.

New logging statements will look like:

    llarp::log::warning(cat, "blah: {}", val);

where `cat` should be set up in each .cpp or cluster of .cpp files, as
described in the oxen-logging README.

As part of spdlog we get fmt, which gives us nice format strings, where
are applied generously in this commit.

Making types printable now requires two steps:
- add a ToString() method
- add this specialization:

      template <>
      constexpr inline bool llarp::IsToStringFormattable<llarp::Whatever> = true;

This will then allow the type to be printed as a "{}" value in a
fmt::format string.  This is applied to all our printable types here,
and all of the `operator<<` are removed.

This commit also:
- replaces various uses of `operator<<` to ToString()
- replaces various uses of std::stringstream with either fmt::format or
  plain std::string
- Rename some to_string and toString() methods to ToString() for
  consistency (and to work with fmt)
- Replace `stringify(...)` and `make_exception` usage with fmt::format
  (and remove stringify/make_exception from util/str.hpp).
2022-07-15 22:17:59 -03:00

83 lines
1.9 KiB
C++

#ifndef LLARP_DHT_TX
#define LLARP_DHT_TX
#include "key.hpp"
#include "txowner.hpp"
#include <llarp/util/logging.hpp>
#include <llarp/util/status.hpp>
#include <set>
#include <vector>
namespace llarp
{
namespace dht
{
struct AbstractContext;
template <typename K, typename V>
struct TX
{
K target;
AbstractContext* parent;
std::set<Key_t> peersAsked;
std::vector<V> valuesFound;
TXOwner whoasked;
TX(const TXOwner& asker, const K& k, AbstractContext* p)
: target(k), parent(p), whoasked(asker)
{}
virtual ~TX() = default;
void
OnFound(const Key_t& askedPeer, const V& value);
util::StatusObject
ExtractStatus() const
{
util::StatusObject obj{
{"whoasked", whoasked.ExtractStatus()}, {"target", target.ExtractStatus()}};
std::vector<util::StatusObject> foundObjs;
std::transform(
valuesFound.begin(),
valuesFound.end(),
std::back_inserter(foundObjs),
[](const auto& item) -> util::StatusObject { return item.ExtractStatus(); });
obj["found"] = foundObjs;
std::vector<std::string> asked;
std::transform(
peersAsked.begin(),
peersAsked.end(),
std::back_inserter(asked),
[](const auto& item) -> std::string { return item.ToString(); });
obj["asked"] = asked;
return obj;
}
virtual bool
Validate(const V& value) const = 0;
virtual void
Start(const TXOwner& peer) = 0;
virtual void
SendReply() = 0;
};
template <typename K, typename V>
inline void
TX<K, V>::OnFound(const Key_t& askedPeer, const V& value)
{
peersAsked.insert(askedPeer);
if (Validate(value))
{
valuesFound.push_back(value);
}
}
} // namespace dht
} // namespace llarp
#endif