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feat(export): pin committee quorum profile

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This commit is contained in:
Nicholas Dudfield
2026-07-14 13:50:05 +07:00
parent 47b65260cb
commit 4c3e313e3a
2 changed files with 22 additions and 0 deletions
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12
include/xrpl/protocol/ExportLimits.h
View File

@@ -29,6 +29,18 @@ struct ExportLimits
// reserves a separate operator signer must select fewer validators.
static constexpr std::size_t maxCommitteeMembers = 32;
// V1 witnesses require the standard 80% quorum of the intent-selected
// committee, rounded up. The intent selects members but cannot lower this
// threshold. Split quotient/remainder arithmetic avoids overflow while
// preserving ceil(memberCount * 0.8).
static constexpr std::size_t
committeeQuorumThreshold(std::size_t memberCount)
{
auto const quotient = memberCount / 5;
auto const remainder = memberCount % 5;
return quotient * 4 + (remainder * 4 + 4) / 5;
}
// Maximum exports a single hook execution may produce. Hook API ABI
// constant hook_api::max_export must stay equal.
static constexpr std::uint8_t maxExportsPerHook = 2;

10
src/test/protocol/ExportKeylet_test.cpp
View File

@@ -27,6 +27,7 @@
#include <xrpl/protocol/ValidatorBitset.h>
#include <xrpl/protocol/digest.h>
#include <array>
#include <cstring>
namespace ripple {
@@ -116,6 +117,15 @@ public:
BEAST_EXPECT(ExportLimits::maxCommitteeMaskBytes == 32);
BEAST_EXPECT(
ExportLimits::maxCommitteeMembers == STTx::maxMultiSigners());
std::array<std::size_t, 11> constexpr expected{
0, 1, 2, 3, 4, 4, 5, 6, 7, 8, 8};
for (std::size_t members = 0; members < expected.size(); ++members)
BEAST_EXPECT(
ExportLimits::committeeQuorumThreshold(members) ==
expected[members]);
BEAST_EXPECT(ExportLimits::committeeQuorumThreshold(28) == 23);
BEAST_EXPECT(ExportLimits::committeeQuorumThreshold(32) == 26);
}
void