feat: ETLng Registry (#1713)

For #1597
This commit is contained in:
Alex Kremer
2024-11-07 17:56:29 +00:00
parent a7bff26fd6
commit 09aa688de4
9 changed files with 1012 additions and 1 deletions

View File

@@ -0,0 +1,530 @@
//------------------------------------------------------------------------------
/*
This file is part of clio: https://github.com/XRPLF/clio
Copyright (c) 2024, the clio developers.
Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#include "etlng/Models.hpp"
#include "etlng/impl/Registry.hpp"
#include "util/LoggerFixtures.hpp"
#include "util/StringUtils.hpp"
#include "util/TestObject.hpp"
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <xrpl/basics/base_uint.h>
#include <xrpl/protocol/STTx.h>
#include <xrpl/protocol/Serializer.h>
#include <xrpl/protocol/TxFormats.h>
#include <xrpl/protocol/TxMeta.h>
#include <cstdint>
#include <string>
#include <utility>
#include <vector>
using namespace etlng::impl;
namespace compiletime::checks {
struct Ext1 {
static void
onLedgerData(etlng::model::LedgerData const&);
};
struct Ext2 {
static void
onInitialObjects(uint32_t, std::vector<etlng::model::Object> const&, std::string);
};
struct Ext3 {
static void
onInitialData(etlng::model::LedgerData const&);
};
struct Ext4SpecMissing {
static void
onTransaction(uint32_t, etlng::model::Transaction const&);
};
struct Ext4Fixed {
using spec = etlng::model::Spec<ripple::TxType::ttNFTOKEN_BURN>;
static void
onTransaction(uint32_t, etlng::model::Transaction const&);
};
struct Ext5 {
static void
onInitialObject(uint32_t, etlng::model::Object const&);
};
struct Ext6SpecMissing {
static void
onInitialTransaction(uint32_t, etlng::model::Transaction const&);
};
struct Ext6Fixed {
using spec = etlng::model::Spec<ripple::TxType::ttNFTOKEN_BURN>;
static void
onInitialTransaction(uint32_t, etlng::model::Transaction const&);
};
struct ExtRealistic {
using spec = etlng::model::Spec<
ripple::TxType::ttNFTOKEN_BURN,
ripple::TxType::ttNFTOKEN_ACCEPT_OFFER,
ripple::TxType::ttNFTOKEN_CREATE_OFFER,
ripple::TxType::ttNFTOKEN_CANCEL_OFFER,
ripple::TxType::ttNFTOKEN_MINT>;
static void
onLedgerData(etlng::model::LedgerData const&);
static void
onInitialObject(uint32_t, etlng::model::Object const&);
static void
onInitialTransaction(uint32_t, etlng::model::Transaction const&);
};
struct ExtCombinesTwoOfKind : Ext2, Ext5 {};
struct ExtEmpty {};
// check all expectations of an extension are met
static_assert(not SomeExtension<ExtEmpty>);
static_assert(SomeExtension<Ext1>);
static_assert(SomeExtension<Ext2>);
static_assert(SomeExtension<Ext3>);
static_assert(not SomeExtension<Ext4SpecMissing>);
static_assert(SomeExtension<Ext4Fixed>);
static_assert(SomeExtension<Ext5>);
static_assert(not SomeExtension<Ext6SpecMissing>);
static_assert(SomeExtension<Ext6Fixed>);
static_assert(SomeExtension<ExtRealistic>);
static_assert(not SomeExtension<ExtCombinesTwoOfKind>);
struct ValidSpec {
using spec = etlng::model::Spec<ripple::ttNFTOKEN_BURN, ripple::ttNFTOKEN_MINT>;
};
// invalid spec does not compile:
// struct DuplicatesSpec {
// using spec = etlng::model::Spec<ripple::ttNFTOKEN_BURN, ripple::ttNFTOKEN_BURN, ripple::ttNFTOKEN_MINT>;
// };
static_assert(ContainsSpec<ValidSpec>);
} // namespace compiletime::checks
namespace {
auto constinit LEDGERHASH = "4BC50C9B0D8515D3EAAE1E74B29A95804346C491EE1A95BF25E4AAB854A6A652";
auto constinit SEQ = 30;
struct MockExtLedgerData {
MOCK_METHOD(void, onLedgerData, (etlng::model::LedgerData const&), (const));
};
struct MockExtInitialData {
MOCK_METHOD(void, onInitialData, (etlng::model::LedgerData const&), (const));
};
struct MockExtOnObject {
MOCK_METHOD(void, onObject, (uint32_t, etlng::model::Object const&), (const));
};
struct MockExtTransactionNftBurn {
using spec = etlng::model::Spec<ripple::TxType::ttNFTOKEN_BURN>;
MOCK_METHOD(void, onTransaction, (uint32_t, etlng::model::Transaction const&), (const));
};
struct MockExtTransactionNftOffer {
using spec = etlng::model::Spec<
ripple::TxType::ttNFTOKEN_CREATE_OFFER,
ripple::TxType::ttNFTOKEN_CANCEL_OFFER,
ripple::TxType::ttNFTOKEN_ACCEPT_OFFER>;
MOCK_METHOD(void, onTransaction, (uint32_t, etlng::model::Transaction const&), (const));
};
struct MockExtInitialObject {
MOCK_METHOD(void, onInitialObject, (uint32_t, etlng::model::Object const&), (const));
};
struct MockExtInitialObjects {
MOCK_METHOD(void, onInitialObjects, (uint32_t, std::vector<etlng::model::Object> const&, std::string), (const));
};
struct MockExtNftBurn {
using spec = etlng::model::Spec<ripple::TxType::ttNFTOKEN_BURN>;
MOCK_METHOD(void, onInitialTransaction, (uint32_t, etlng::model::Transaction const&), (const));
};
struct MockExtNftOffer {
using spec = etlng::model::Spec<
ripple::TxType::ttNFTOKEN_CREATE_OFFER,
ripple::TxType::ttNFTOKEN_CANCEL_OFFER,
ripple::TxType::ttNFTOKEN_ACCEPT_OFFER>;
MOCK_METHOD(void, onInitialTransaction, (uint32_t, etlng::model::Transaction const&), (const));
};
struct RegistryTest : NoLoggerFixture {
static std::pair<ripple::STTx, ripple::TxMeta>
CreateNftTxAndMeta()
{
ripple::uint256 hash;
EXPECT_TRUE(hash.parseHex("6C7F69A6D25A13AC4A2E9145999F45D4674F939900017A96885FDC2757E9284E"));
static constinit auto txnHex =
"1200192200000008240011CC9B201B001F71D6202A0000000168400000"
"000000000C7321ED475D1452031E8F9641AF1631519A58F7B8681E172E"
"4838AA0E59408ADA1727DD74406960041F34F10E0CBB39444B4D4E577F"
"C0B7E8D843D091C2917E96E7EE0E08B30C91413EC551A2B8A1D405E8BA"
"34FE185D8B10C53B40928611F2DE3B746F0303751868747470733A2F2F"
"677265677765697362726F642E636F6D81146203F49C21D5D6E022CB16"
"DE3538F248662FC73C";
static constinit auto txnMeta =
"201C00000001F8E511005025001F71B3556ED9C9459001E4F4A9121F4E"
"07AB6D14898A5BBEF13D85C25D743540DB59F3CF566203F49C21D5D6E0"
"22CB16DE3538F248662FC73CFFFFFFFFFFFFFFFFFFFFFFFFE6FAEC5A00"
"0800006203F49C21D5D6E022CB16DE3538F248662FC73C8962EFA00000"
"0006751868747470733A2F2F677265677765697362726F642E636F6DE1"
"EC5A000800006203F49C21D5D6E022CB16DE3538F248662FC73C93E8B1"
"C200000028751868747470733A2F2F677265677765697362726F642E63"
"6F6DE1EC5A000800006203F49C21D5D6E022CB16DE3538F248662FC73C"
"9808B6B90000001D751868747470733A2F2F677265677765697362726F"
"642E636F6DE1EC5A000800006203F49C21D5D6E022CB16DE3538F24866"
"2FC73C9C28BBAC00000012751868747470733A2F2F6772656777656973"
"62726F642E636F6DE1EC5A000800006203F49C21D5D6E022CB16DE3538"
"F248662FC73CA048C0A300000007751868747470733A2F2F6772656777"
"65697362726F642E636F6DE1EC5A000800006203F49C21D5D6E022CB16"
"DE3538F248662FC73CAACE82C500000029751868747470733A2F2F6772"
"65677765697362726F642E636F6DE1EC5A000800006203F49C21D5D6E0"
"22CB16DE3538F248662FC73CAEEE87B80000001E751868747470733A2F"
"2F677265677765697362726F642E636F6DE1EC5A000800006203F49C21"
"D5D6E022CB16DE3538F248662FC73CB30E8CAF00000013751868747470"
"733A2F2F677265677765697362726F642E636F6DE1EC5A000800006203"
"F49C21D5D6E022CB16DE3538F248662FC73CB72E91A200000008751868"
"747470733A2F2F677265677765697362726F642E636F6DE1EC5A000800"
"006203F49C21D5D6E022CB16DE3538F248662FC73CC1B453C40000002A"
"751868747470733A2F2F677265677765697362726F642E636F6DE1EC5A"
"000800006203F49C21D5D6E022CB16DE3538F248662FC73CC5D458BB00"
"00001F751868747470733A2F2F677265677765697362726F642E636F6D"
"E1EC5A000800006203F49C21D5D6E022CB16DE3538F248662FC73CC9F4"
"5DAE00000014751868747470733A2F2F677265677765697362726F642E"
"636F6DE1EC5A000800006203F49C21D5D6E022CB16DE3538F248662FC7"
"3CCE1462A500000009751868747470733A2F2F67726567776569736272"
"6F642E636F6DE1EC5A000800006203F49C21D5D6E022CB16DE3538F248"
"662FC73CD89A24C70000002B751868747470733A2F2F67726567776569"
"7362726F642E636F6DE1EC5A000800006203F49C21D5D6E022CB16DE35"
"38F248662FC73CDCBA29BA00000020751868747470733A2F2F67726567"
"7765697362726F642E636F6DE1EC5A000800006203F49C21D5D6E022CB"
"16DE3538F248662FC73CE0DA2EB100000015751868747470733A2F2F67"
"7265677765697362726F642E636F6DE1EC5A000800006203F49C21D5D6"
"E022CB16DE3538F248662FC73CE4FA33A40000000A751868747470733A"
"2F2F677265677765697362726F642E636F6DE1EC5A000800006203F49C"
"21D5D6E022CB16DE3538F248662FC73CF39FFABD000000217518687474"
"70733A2F2F677265677765697362726F642E636F6DE1EC5A0008000062"
"03F49C21D5D6E022CB16DE3538F248662FC73CF7BFFFB0000000167518"
"68747470733A2F2F677265677765697362726F642E636F6DE1EC5A0008"
"00006203F49C21D5D6E022CB16DE3538F248662FC73CFBE004A7000000"
"0B751868747470733A2F2F677265677765697362726F642E636F6DE1F1"
"E1E72200000000501A6203F49C21D5D6E022CB16DE3538F248662FC73C"
"662FC73C8962EFA000000006FAEC5A000800006203F49C21D5D6E022CB"
"16DE3538F248662FC73C8962EFA000000006751868747470733A2F2F67"
"7265677765697362726F642E636F6DE1EC5A000800006203F49C21D5D6"
"E022CB16DE3538F248662FC73C93E8B1C200000028751868747470733A"
"2F2F677265677765697362726F642E636F6DE1EC5A000800006203F49C"
"21D5D6E022CB16DE3538F248662FC73C9808B6B90000001D7518687474"
"70733A2F2F677265677765697362726F642E636F6DE1EC5A0008000062"
"03F49C21D5D6E022CB16DE3538F248662FC73C9C28BBAC000000127518"
"68747470733A2F2F677265677765697362726F642E636F6DE1EC5A0008"
"00006203F49C21D5D6E022CB16DE3538F248662FC73CA048C0A3000000"
"07751868747470733A2F2F677265677765697362726F642E636F6DE1EC"
"5A000800006203F49C21D5D6E022CB16DE3538F248662FC73CAACE82C5"
"00000029751868747470733A2F2F677265677765697362726F642E636F"
"6DE1EC5A000800006203F49C21D5D6E022CB16DE3538F248662FC73CAE"
"EE87B80000001E751868747470733A2F2F677265677765697362726F64"
"2E636F6DE1EC5A000800006203F49C21D5D6E022CB16DE3538F248662F"
"C73CB30E8CAF00000013751868747470733A2F2F677265677765697362"
"726F642E636F6DE1EC5A000800006203F49C21D5D6E022CB16DE3538F2"
"48662FC73CB72E91A200000008751868747470733A2F2F677265677765"
"697362726F642E636F6DE1EC5A000800006203F49C21D5D6E022CB16DE"
"3538F248662FC73CC1B453C40000002A751868747470733A2F2F677265"
"677765697362726F642E636F6DE1EC5A000800006203F49C21D5D6E022"
"CB16DE3538F248662FC73CC5D458BB0000001F751868747470733A2F2F"
"677265677765697362726F642E636F6DE1EC5A000800006203F49C21D5"
"D6E022CB16DE3538F248662FC73CC9F45DAE0000001475186874747073"
"3A2F2F677265677765697362726F642E636F6DE1EC5A000800006203F4"
"9C21D5D6E022CB16DE3538F248662FC73CCE1462A50000000975186874"
"7470733A2F2F677265677765697362726F642E636F6DE1EC5A00080000"
"6203F49C21D5D6E022CB16DE3538F248662FC73CD89A24C70000002B75"
"1868747470733A2F2F677265677765697362726F642E636F6DE1EC5A00"
"0800006203F49C21D5D6E022CB16DE3538F248662FC73CDCBA29BA0000"
"0020751868747470733A2F2F677265677765697362726F642E636F6DE1"
"EC5A000800006203F49C21D5D6E022CB16DE3538F248662FC73CE0DA2E"
"B100000015751868747470733A2F2F677265677765697362726F642E63"
"6F6DE1EC5A000800006203F49C21D5D6E022CB16DE3538F248662FC73C"
"E4FA33A40000000A751868747470733A2F2F677265677765697362726F"
"642E636F6DE1EC5A000800006203F49C21D5D6E022CB16DE3538F24866"
"2FC73CEF7FF5C60000002C751868747470733A2F2F6772656777656973"
"62726F642E636F6DE1EC5A000800006203F49C21D5D6E022CB16DE3538"
"F248662FC73CF39FFABD00000021751868747470733A2F2F6772656777"
"65697362726F642E636F6DE1EC5A000800006203F49C21D5D6E022CB16"
"DE3538F248662FC73CF7BFFFB000000016751868747470733A2F2F6772"
"65677765697362726F642E636F6DE1EC5A000800006203F49C21D5D6E0"
"22CB16DE3538F248662FC73CFBE004A70000000B751868747470733A2F"
"2F677265677765697362726F642E636F6DE1F1E1E1E511006125001F71"
"B3556ED9C9459001E4F4A9121F4E07AB6D14898A5BBEF13D85C25D7435"
"40DB59F3CF56BE121B82D5812149D633F605EB07265A80B762A365CE94"
"883089FEEE4B955701E6240011CC9B202B0000002C6240000002540BE3"
"ECE1E72200000000240011CC9C2D0000000A202B0000002D202C000000"
"066240000002540BE3E081146203F49C21D5D6E022CB16DE3538F24866"
"2FC73CE1E1F1031000";
auto const metaBlob = hexStringToBinaryString(txnMeta);
auto const txnBlob = hexStringToBinaryString(txnHex);
ripple::SerialIter it{txnBlob.data(), txnBlob.size()};
return {ripple::STTx{it}, ripple::TxMeta{hash, SEQ, metaBlob}};
}
static auto
CreateTransaction(ripple::TxType type)
{
auto [sttx, meta] = CreateNftTxAndMeta();
return etlng::model::Transaction{
.raw = "",
.metaRaw = "",
.sttx = sttx,
.meta = meta,
.id = ripple::uint256{"0000000000000000000000000000000000000000000000000000000000000001"},
.key = "0000000000000000000000000000000000000000000000000000000000000001",
.type = type
};
}
static auto
CreateObject()
{
return etlng::model::Object{
.key = {},
.keyRaw = {},
.data = {},
.dataRaw = {},
.successor = {},
.predecessor = {},
.type = {},
};
}
};
} // namespace
TEST_F(RegistryTest, FilteringOfTxWorksCorrectlyForInitialTransaction)
{
auto transactions = std::vector{
CreateTransaction(ripple::TxType::ttNFTOKEN_BURN),
CreateTransaction(ripple::TxType::ttNFTOKEN_BURN),
CreateTransaction(ripple::TxType::ttNFTOKEN_CREATE_OFFER),
};
auto extBurn = MockExtNftBurn{};
auto extOffer = MockExtNftOffer{};
EXPECT_CALL(extBurn, onInitialTransaction(testing::_, testing::_)).Times(2); // 2 burn txs
EXPECT_CALL(extOffer, onInitialTransaction(testing::_, testing::_)); // 1 create offer
auto const header = CreateLedgerHeader(LEDGERHASH, SEQ);
auto reg = Registry<MockExtNftBurn&, MockExtNftOffer&>(extBurn, extOffer);
reg.dispatchInitialData(etlng::model::LedgerData{
.transactions = transactions,
.objects = {},
.successors = {},
.header = header,
.rawHeader = {},
.seq = SEQ,
});
}
TEST_F(RegistryTest, FilteringOfTxWorksCorrectlyForTransaction)
{
auto transactions = std::vector{
CreateTransaction(ripple::TxType::ttNFTOKEN_BURN),
CreateTransaction(ripple::TxType::ttNFTOKEN_BURN),
CreateTransaction(ripple::TxType::ttNFTOKEN_CREATE_OFFER),
};
auto extBurn = MockExtTransactionNftBurn{};
auto extOffer = MockExtTransactionNftOffer{};
EXPECT_CALL(extBurn, onTransaction(testing::_, testing::_)).Times(2); // 2 burn txs
EXPECT_CALL(extOffer, onTransaction(testing::_, testing::_)); // 1 create offer
auto const header = CreateLedgerHeader(LEDGERHASH, SEQ);
auto reg = Registry<MockExtTransactionNftBurn&, MockExtTransactionNftOffer&>(extBurn, extOffer);
reg.dispatch(etlng::model::LedgerData{
.transactions = std::move(transactions),
.objects = {},
.successors = {},
.header = header,
.rawHeader = {},
.seq = SEQ
});
}
TEST_F(RegistryTest, InitialObjectsEmpty)
{
auto extObj = MockExtInitialObject{};
auto extObjs = MockExtInitialObjects{};
EXPECT_CALL(extObj, onInitialObject(testing::_, testing::_)).Times(0); // 0 empty objects sent
EXPECT_CALL(extObjs, onInitialObjects(testing::_, testing::_, testing::_)); // 1 vector passed as is
auto reg = Registry<MockExtInitialObject&, MockExtInitialObjects&>(extObj, extObjs);
reg.dispatchInitialObjects(SEQ, {}, {});
}
TEST_F(RegistryTest, InitialObjectsDispatched)
{
auto extObj = MockExtInitialObject{};
auto extObjs = MockExtInitialObjects{};
EXPECT_CALL(extObj, onInitialObject(testing::_, testing::_)).Times(3); // 3 objects sent
EXPECT_CALL(extObjs, onInitialObjects(testing::_, testing::_, testing::_)); // 1 vector passed as is
auto reg = Registry<MockExtInitialObject&, MockExtInitialObjects&>(extObj, extObjs);
reg.dispatchInitialObjects(SEQ, {CreateObject(), CreateObject(), CreateObject()}, {});
}
TEST_F(RegistryTest, ObjectsDispatched)
{
auto extObj = MockExtOnObject{};
EXPECT_CALL(extObj, onObject(testing::_, testing::_)).Times(3); // 3 objects sent
auto const header = CreateLedgerHeader(LEDGERHASH, SEQ);
auto reg = Registry<MockExtOnObject&>(extObj);
reg.dispatch(etlng::model::LedgerData{
.transactions = {},
.objects = {CreateObject(), CreateObject(), CreateObject()},
.successors = {},
.header = header,
.rawHeader = {},
.seq = SEQ
});
}
TEST_F(RegistryTest, OnLedgerDataForBatch)
{
auto transactions = std::vector{
CreateTransaction(ripple::TxType::ttNFTOKEN_BURN),
CreateTransaction(ripple::TxType::ttNFTOKEN_BURN),
CreateTransaction(ripple::TxType::ttNFTOKEN_CREATE_OFFER),
};
auto ext = MockExtLedgerData{};
EXPECT_CALL(ext, onLedgerData(testing::_)); // 1 batch (dispatch call)
auto const header = CreateLedgerHeader(LEDGERHASH, SEQ);
auto reg = Registry<MockExtLedgerData&>(ext);
reg.dispatch(etlng::model::LedgerData{
.transactions = std::move(transactions),
.objects = {},
.successors = {},
.header = header,
.rawHeader = {},
.seq = SEQ
});
}
TEST_F(RegistryTest, InitialObjectsCorrectOrderOfHookCalls)
{
auto extObjs = MockExtInitialObjects{};
auto extObj = MockExtInitialObject{};
testing::InSequence seqGuard;
EXPECT_CALL(extObjs, onInitialObjects);
EXPECT_CALL(extObj, onInitialObject).Times(3);
auto reg = Registry<MockExtInitialObject&, MockExtInitialObjects&>(extObj, extObjs);
reg.dispatchInitialObjects(SEQ, {CreateObject(), CreateObject(), CreateObject()}, {});
}
TEST_F(RegistryTest, InitialDataCorrectOrderOfHookCalls)
{
auto extInitialData = MockExtInitialData{};
auto extInitialTransaction = MockExtNftBurn{};
auto transactions = std::vector{
CreateTransaction(ripple::TxType::ttNFTOKEN_BURN),
CreateTransaction(ripple::TxType::ttNFTOKEN_BURN),
CreateTransaction(ripple::TxType::ttNFTOKEN_CREATE_OFFER),
};
testing::InSequence seqGuard;
EXPECT_CALL(extInitialData, onInitialData);
EXPECT_CALL(extInitialTransaction, onInitialTransaction).Times(2);
auto const header = CreateLedgerHeader(LEDGERHASH, SEQ);
auto reg = Registry<MockExtNftBurn&, MockExtInitialData&>(extInitialTransaction, extInitialData);
reg.dispatchInitialData(etlng::model::LedgerData{
.transactions = std::move(transactions),
.objects = {},
.successors = {},
.header = header,
.rawHeader = {},
.seq = SEQ
});
}
TEST_F(RegistryTest, LedgerDataCorrectOrderOfHookCalls)
{
auto extLedgerData = MockExtLedgerData{};
auto extOnTransaction = MockExtTransactionNftBurn{};
auto extOnObject = MockExtOnObject{};
auto transactions = std::vector{
CreateTransaction(ripple::TxType::ttNFTOKEN_BURN),
CreateTransaction(ripple::TxType::ttNFTOKEN_BURN),
CreateTransaction(ripple::TxType::ttNFTOKEN_CREATE_OFFER),
};
auto objects = std::vector{
CreateObject(),
CreateObject(),
CreateObject(),
};
// testing::Sequence seq;
testing::InSequence seqGuard;
EXPECT_CALL(extLedgerData, onLedgerData);
EXPECT_CALL(extOnTransaction, onTransaction).Times(2);
EXPECT_CALL(extOnObject, onObject).Times(3);
auto const header = CreateLedgerHeader(LEDGERHASH, SEQ);
auto reg = Registry<MockExtOnObject&, MockExtTransactionNftBurn&, MockExtLedgerData&>(
extOnObject, extOnTransaction, extLedgerData
);
reg.dispatch(etlng::model::LedgerData{
.transactions = std::move(transactions),
.objects = std::move(objects),
.successors = {},
.header = header,
.rawHeader = {},
.seq = SEQ
});
}