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feat: Native Feature RPC (#1526)

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This commit is contained in:
Alex Kremer
2024-07-11 12:18:13 +01:00
committed by GitHub
parent 6e606cb7d8
commit f771478da0
15 changed files with 715 additions and 80 deletions
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69
src/data/AmendmentCenter.cpp
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@@ -30,6 +30,7 @@
#include <xrpl/protocol/Indexes.h>
#include <xrpl/protocol/SField.h>
#include <xrpl/protocol/STLedgerEntry.h>
#include <xrpl/protocol/STVector256.h>
#include <xrpl/protocol/Serializer.h>
#include <xrpl/protocol/digest.h>
@@ -38,7 +39,9 @@
#include <iterator>
#include <map>
#include <memory>
#include <optional>
#include <ranges>
#include <stdexcept>
#include <string>
#include <string_view>
#include <unordered_set>
@@ -54,6 +57,15 @@ SUPPORTED_AMENDMENTS()
return amendments;
}
bool
lookupAmendment(auto const& allAmendments, std::vector<ripple::uint256> const& ledgerAmendments, std::string_view name)
{
namespace rg = std::ranges;
if (auto const am = rg::find(allAmendments, name, &data::Amendment::name); am != rg::end(allAmendments))
return rg::find(ledgerAmendments, am->feature) != rg::end(ledgerAmendments);
return false;
}
} // namespace
namespace data {
@@ -72,6 +84,11 @@ AmendmentKey::operator std::string const&() const
return name;
}
AmendmentKey::operator std::string_view() const
{
return name;
}
AmendmentKey::operator ripple::uint256() const
{
return Amendment::GetAmendmentId(name);
@@ -127,28 +144,29 @@ AmendmentCenter::isEnabled(AmendmentKey const& key, uint32_t seq) const
bool
AmendmentCenter::isEnabled(boost::asio::yield_context yield, AmendmentKey const& key, uint32_t seq) const
{
namespace rg = std::ranges;
// the amendments should always be present on the ledger
auto const& amendments = backend_->fetchLedgerObject(ripple::keylet::amendments().key, seq, yield);
ASSERT(amendments.has_value(), "Amendments ledger object must be present in the database");
ripple::SLE const amendmentsSLE{
ripple::SerialIter{amendments->data(), amendments->size()}, ripple::keylet::amendments().key
};
if (not amendmentsSLE.isFieldPresent(ripple::sfAmendments))
return false;
auto const listAmendments = amendmentsSLE.getFieldV256(ripple::sfAmendments);
if (auto am = rg::find(all_, key.name, [](auto const& am) { return am.name; }); am != rg::end(all_)) {
return rg::find(listAmendments, am->feature) != rg::end(listAmendments);
}
if (auto const listAmendments = fetchAmendmentsList(yield, seq); listAmendments)
return lookupAmendment(all_, *listAmendments, key);
return false;
}
std::vector<bool>
AmendmentCenter::isEnabled(boost::asio::yield_context yield, std::vector<AmendmentKey> const& keys, uint32_t seq) const
{
namespace rg = std::ranges;
if (auto const listAmendments = fetchAmendmentsList(yield, seq); listAmendments) {
std::vector<bool> out;
rg::transform(keys, std::back_inserter(out), [this, &listAmendments](auto const& key) {
return lookupAmendment(all_, *listAmendments, key);
});
return out;
}
return std::vector<bool>(keys.size(), false);
}
Amendment const&
AmendmentCenter::getAmendment(AmendmentKey const& key) const
{
@@ -168,4 +186,19 @@ Amendment::GetAmendmentId(std::string_view name)
return ripple::sha512Half(ripple::Slice(name.data(), name.size()));
}
std::optional<std::vector<ripple::uint256>>
AmendmentCenter::fetchAmendmentsList(boost::asio::yield_context yield, uint32_t seq) const
{
// the amendments should always be present on the ledger
auto const amendments = backend_->fetchLedgerObject(ripple::keylet::amendments().key, seq, yield);
if (not amendments.has_value())
throw std::runtime_error("Amendments ledger object must be present in the database");
ripple::SLE const amendmentsSLE{
ripple::SerialIter{amendments->data(), amendments->size()}, ripple::keylet::amendments().key
};
return amendmentsSLE[~ripple::sfAmendments];
}
} // namespace data