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Merge pull request #61 from MyHush/sietch 

Sietch
dev-aarch64
Duke Leto 5 years ago
committed by GitHub
parent
172ac60765 252451e382
commit
92c500be13
No known key found for this signature in database GPG Key ID: 4AEE18F83AFDEB23
13 changed files with 355 additions and 16 deletions
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  1. 35
      src/coins.cpp
  2. 2
      src/init.cpp
  3. 2
      src/main.cpp
  4. 2
      src/main.h
  5. 4
      src/rpc/rawtransaction.cpp
  6. 237
      src/sietch.h
  7. 6
      src/transaction_builder.cpp
  8. 8
      src/txdb.cpp
  9. 1
      src/txmempool.cpp
  10. 3
      src/util.cpp
  11. 1
      src/util.h
  12. 13
      src/wallet/asyncrpcoperation_sendmany.cpp
  13. 57
      src/wallet/rpcwallet.cpp

35
src/coins.cpp
View File

@ -334,10 +334,13 @@ void CCoinsViewCache::PopAnchor(const uint256 &newrt, ShieldedType type) {
}
void CCoinsViewCache::SetNullifiers(const CTransaction& tx, bool spent) {
for (const SpendDescription &spendDescription : tx.vShieldedSpend) {
std::pair<CNullifiersMap::iterator, bool> ret = cacheSaplingNullifiers.insert(std::make_pair(spendDescription.nullifier, CNullifiersCacheEntry()));
ret.first->second.entered = spent;
ret.first->second.flags |= CNullifiersCacheEntry::DIRTY;
if (fZdebug)
LogPrintf("%s: Inserted spent=%d nullifier=%s into Sapling nullifier cache\n", __FUNCTION__, spent, spendDescription.nullifier.GetHex().c_str());
}
}
@ -428,6 +431,7 @@ void CCoinsViewCache::SetBestBlock(const uint256 &hashBlockIn) {
void BatchWriteNullifiers(CNullifiersMap &mapNullifiers, CNullifiersMap &cacheNullifiers)
{
LogPrintf("%s\n", __FUNCTION__);
for (CNullifiersMap::iterator child_it = mapNullifiers.begin(); child_it != mapNullifiers.end();) {
if (child_it->second.flags & CNullifiersCacheEntry::DIRTY) { // Ignore non-dirty entries (optimization).
CNullifiersMap::iterator parent_it = cacheNullifiers.find(child_it->first);
@ -616,11 +620,40 @@ CAmount CCoinsViewCache::GetValueIn(int32_t nHeight,int64_t *interestp,const CTr
bool CCoinsViewCache::HaveJoinSplitRequirements(const CTransaction& tx) const
{
boost::unordered_map<uint256, SproutMerkleTree, CCoinsKeyHasher> intermediates;
BOOST_FOREACH(const JSDescription &joinsplit, tx.vjoinsplit)
{
BOOST_FOREACH(const uint256& nullifier, joinsplit.nullifiers)
{
if (GetNullifier(nullifier, SPROUT)) {
// If the nullifier is set, this transaction
// double-spends!
return false;
}
}
SproutMerkleTree tree;
auto it = intermediates.find(joinsplit.anchor);
if (it != intermediates.end()) {
tree = it->second;
} else if (!GetSproutAnchorAt(joinsplit.anchor, tree)) {
return false;
}
BOOST_FOREACH(const uint256& commitment, joinsplit.commitments)
{
tree.append(commitment);
}
intermediates.insert(std::make_pair(tree.root(), tree));
}
for (const SpendDescription &spendDescription : tx.vShieldedSpend) {
if (GetNullifier(spendDescription.nullifier, SAPLING)) { // Prevent double spends
LogPrintf("%s: sapling nullifier %s exists, preventing double spend\n", __FUNCTION__, spendDescription.nullifier.GetHex().c_str());
return false;
}
}
SaplingMerkleTree tree;
if (!GetSaplingAnchorAt(spendDescription.anchor, tree)) {

2
src/init.cpp
View File

@ -1151,6 +1151,8 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
// ********************************************************* Step 3: parameter-to-internal-flags
fZdebug=GetBoolArg("-zdebug", false);
fDebug = !mapMultiArgs["-debug"].empty();
// Special-case: if -debug=0/-nodebug is set, turn off debugging messages
const vector<string>& categories = mapMultiArgs["-debug"];

2
src/main.cpp
View File

@ -1,6 +1,6 @@
// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin Core developers
// Copyright (c) 2019 The Hush developers
// Copyright (c) 2019-2020 The Hush developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

2
src/main.h
View File

@ -1,6 +1,6 @@
// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin Core developers
// Copyright (c) 2019 The Hush developers
// Copyright (c) 2019-2020 The Hush developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

4
src/rpc/rawtransaction.cpp
View File

@ -1,6 +1,6 @@
// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2015 The Bitcoin Core developers
// Copyright (c) 2019 The Hush developers
// Copyright (c) 2019-2020 The Hush developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
@ -1377,6 +1377,7 @@ UniValue sendrawtransaction(const UniValue& params, bool fHelp, const CPubKey& m
// push to local node and sync with wallets
CValidationState state;
bool fMissingInputs;
LogPrintf("%s: Submitting to mempool\n", __FUNCTION__);
if (!AcceptToMemoryPool(mempool, state, tx, false, &fMissingInputs, !fOverrideFees)) {
if (state.IsInvalid()) {
throw JSONRPCError(RPC_TRANSACTION_REJECTED, strprintf("%i: %s", state.GetRejectCode(), state.GetRejectReason()));
@ -1390,6 +1391,7 @@ UniValue sendrawtransaction(const UniValue& params, bool fHelp, const CPubKey& m
} else if (fHaveChain) {
throw JSONRPCError(RPC_TRANSACTION_ALREADY_IN_CHAIN, "transaction already in block chain");
}
LogPrintf("%s: Relaying raw tx to mempool\n", __FUNCTION__);
RelayTransaction(tx);
}
else

237
src/sietch.h
View File

@ -0,0 +1,237 @@
/******************************************************************************
* Copyright © 2019 The Hush developers *
* *
* See the AUTHORS and LICENSE files at *
* the top-level directory of this distribution for the individual copyright *
* holder information and the developer policies on copyright and licensing. *
* *
* Unless otherwise agreed in a custom licensing agreement, no part of the *
* this software, including this file may be copied, modified, propagated *
* or distributed except according to the terms contained in the GPLv3 *
* *
* Removal or modification of this copyright notice is prohibited. *
* *
******************************************************************************/
#ifndef SIETCH_H
#define SIETCH_H
// The network essentially DoS's these addresses and reduces their privacy slightly
// by making them public, but in return, the rest of the shielded pool benefits
// and so it's a large benefit for a small cost.
string randomSietchZaddr() {
std::vector<string> SietchShieldedPool1 = {
"zs1qqj4aw35ku9yn72g3tha588mxk66mhl5smnn99as40887xvdg49d4yqf43hhqnj9rpsq7qaqqhx",
"zs1qywzq2cutvg6rkynjljtssz246easagumg3hlwjluz4g7qttg9kqrld7s43ewutpph56jmn2zu6",
"zs1qx7swmw28dj992f6zs0aqucds9kag88mnca5u73dddeqek4m97pg7h9qsaxxwwkgqxht6zujaxc",
"zs1q82pkqu58uemrm2749x6g2ta5shnsra9p5jgk0qqzxd3e08ke6vyeezz7lhldj32jxtsuemskk7",
"zs1qvah5w05qq4yhrsqrt73ckgntkmwdv9mntxep8clnxqfph8xggqad96a5nvwg4evfr9pc5ruvc8",
"zs1qwrkjcmnrwrqqkz3dyfjvdvdppe0ndnm8fhhpsz8stje4qcfc54jtuygz2jfwc3aag69wsjcm8h",
"zs1q5pd7h4x7dtnpa4ace7tytye5sd0j4043t4f3jdntyxvg9ex258nu6pw9tthn6t5gmjq5gv0lhc",
"zs1q6vjrpsuf468an545q7fh9cx0xlkwh75a7qjpemjh3ymuqqzxz5ts2n2dcth3yfnlv6vqpjyglr",
"zs1qmsvwtxkwlh3tkh0lqtwqv2mxy94jt778f7j74a8067nejkt4j3m2rkmypccju7cfuw7xyg0gg8",
"zs1qu3jxrw5qwuvl7zfvnsdvywr4a9cn4h00me65te29platx5agek072f5rvxgt8kdt630qs4tgtr",
"zs1qamxwddwrl5xn56alffruk69p304cqf7uf5nhqpwfc374l9ph00m78xv2kzwymyz0fhxcku7v5k",
"zs1q7gv479e6q7d8fxc35v5s27em66mmm5gz50excudf95rzjgnwdy5pnwdfytvm7gt8kt6wpkfphq",
"zs1pqvxd9a2zcsh2v8gaswh3jp2qkzz5umrucl5k4gx0rkvmq68krpx3jesavxftd8t0z56v8whllj",
"zs1ppn2mdznaa2pd9mavfnxrcjtv0c9un8pg6jaa9ww4wy6wdfs8xxwquqk5umtcjwm6vr4zrqy5x7",
"zs1pz9c9ydyrm7e876cvae9ha45ww77ru5fhys2yz33kjy8ej9230wjy8yupfxkynwqr6nfupgmf94",
"zs1p83g95avpsgr847eu3rm3xcmgurt9hc77wtndnmpypa046n529aqdc9ptz04ugsuhvum2ztzwe3",
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};
std::vector<string> SietchShieldedPool2 = {
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};
//TODO: Assumes pools of 100
int randIndex = GetRandInt(100); // random int between 0 and 99
if(randIndex % 2) {
return SietchShieldedPool1[randIndex];
} else {
return SietchShieldedPool2[randIndex];
}
}
#endif

6
src/transaction_builder.cpp
View File

@ -1,4 +1,7 @@
// Copyright (c) 2018 The Zcash developers
// Copyright (c) 2019-2020 The Hush developers
// Released under the GPLv3
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
@ -9,6 +12,7 @@
#include "script/sign.h"
#include <boost/variant.hpp>
#include <boost/optional/optional_io.hpp>
#include <librustzcash.h>
SpendDescriptionInfo::SpendDescriptionInfo(
@ -169,6 +173,7 @@ boost::optional<CTransaction> TransactionBuilder::Build()
auto ctx = librustzcash_sapling_proving_ctx_init();
LogPrintf("%s: Creating Sapling SpendDescriptions\n", __FUNCTION__);
// Create Sapling SpendDescriptions
for (auto spend : spends) {
auto cm = spend.note.cm();
@ -203,6 +208,7 @@ boost::optional<CTransaction> TransactionBuilder::Build()
sdesc.anchor = spend.anchor;
sdesc.nullifier = *nf;
LogPrintf("%s: Created cm + nullifier=%s\n", __FUNCTION__, sdesc.nullifier.ToString().c_str() );
mtx.vShieldedSpend.push_back(sdesc);
}

8
src/txdb.cpp
View File

@ -1,6 +1,6 @@
// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin Core developers
// Copyright (c) 2019 The Hush developers
// Copyright (c) 2019-2020 The Hush developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
@ -287,12 +287,14 @@ bool CCoinsViewDB::GetStats(CCoinsStats &stats) const {
bool CBlockTreeDB::WriteBatchSync(const std::vector<std::pair<int, const CBlockFileInfo*> >& fileInfo, int nLastFile, const std::vector<const CBlockIndex*>& blockinfo) {
CDBBatch batch(*this);
fprintf(stderr, "%s: Writing block files\n", __FUNCTION__);
if (fZdebug)
fprintf(stderr, "%s: Writing block files\n", __FUNCTION__);
for (std::vector<std::pair<int, const CBlockFileInfo*> >::const_iterator it=fileInfo.begin(); it != fileInfo.end(); it++) {
batch.Write(make_pair(DB_BLOCK_FILES, it->first), *it->second);
}
batch.Write(DB_LAST_BLOCK, nLastFile);
fprintf(stderr, "%s: Writing block index\n", __FUNCTION__);
if (fZdebug)
fprintf(stderr, "%s: Writing block index\n", __FUNCTION__);
for (std::vector<const CBlockIndex*>::const_iterator it=blockinfo.begin(); it != blockinfo.end(); it++) {
batch.Write(make_pair(DB_BLOCK_INDEX, (*it)->GetBlockHash()), CDiskBlockIndex(*it));
}

1
src/txmempool.cpp
View File

@ -865,6 +865,7 @@ void CTxMemPool::NotifyRecentlyAdded()
try {
SyncWithWallets(tx, NULL);
} catch (const boost::thread_interrupted&) {
fprintf(stderr,"%s: thread interrupted\n", __FUNCTION__);
throw;
} catch (const std::exception& e) {
PrintExceptionContinue(&e, "CTxMemPool::NotifyRecentlyAdded()");

3
src/util.cpp
View File

@ -1,6 +1,6 @@
// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin Core developers
// Copyright (c) 2019 The Hush developers
// Copyright (c) 2019-2020 The Hush developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
@ -121,6 +121,7 @@ using namespace std;
map<string, string> mapArgs;
map<string, vector<string> > mapMultiArgs;
bool fDebug = false;
bool fZdebug = false;
bool fPrintToConsole = false;
bool fPrintToDebugLog = true;
bool fDaemon = false;

1
src/util.h
View File

@ -61,6 +61,7 @@ public:
extern std::map<std::string, std::string> mapArgs;
extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
extern bool fDebug;
extern bool fZdebug;
extern bool fPrintToConsole;
extern bool fPrintToDebugLog;
extern bool fServer;

13
src/wallet/asyncrpcoperation_sendmany.cpp
View File

@ -1,4 +1,5 @@
// Copyright (c) 2016 The Zcash developers
// Copyright (c) 2019-2020 The Hush developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
@ -49,6 +50,7 @@
#include <string>
#include "paymentdisclosuredb.h"
#include <boost/optional/optional_io.hpp>
using namespace libzcash;
@ -463,6 +465,8 @@ bool AsyncRPCOperation_sendmany::main_impl() {
}
// Select Sapling notes
if(fZdebug)
LogPrintf("%s: Selecting Sapling notes\n", __FUNCTION__);
std::vector<SaplingOutPoint> ops;
std::vector<SaplingNote> notes;
CAmount sum = 0;
@ -476,6 +480,7 @@ bool AsyncRPCOperation_sendmany::main_impl() {
}
// Fetch Sapling anchor and witnesses
//LogPrintf("%s: Gathering anchors and witnesses\n", __FUNCTION__);
uint256 anchor;
std::vector<boost::optional<SaplingWitness>> witnesses;
{
@ -500,6 +505,8 @@ bool AsyncRPCOperation_sendmany::main_impl() {
auto addr = DecodePaymentAddress(address);
assert(boost::get<libzcash::SaplingPaymentAddress>(&addr) != nullptr);
auto to = boost::get<libzcash::SaplingPaymentAddress>(addr);
if(fZdebug)
LogPrintf("%s: Adding Sapling output to address %s\n", __FUNCTION__, to.GetHash().ToString().c_str());
auto memo = get_memo_from_hex_string(hexMemo);
@ -523,6 +530,8 @@ bool AsyncRPCOperation_sendmany::main_impl() {
throw JSONRPCError(RPC_WALLET_ERROR, "Failed to build transaction.");
}
tx_ = maybe_tx.get();
if(fZdebug)
LogPrintf("%s: Raw transaction created\n", __FUNCTION__);
// Send the transaction
// TODO: Use CWallet::CommitTransaction instead of sendrawtransaction
@ -530,6 +539,8 @@ bool AsyncRPCOperation_sendmany::main_impl() {
if (!testmode) {
UniValue params = UniValue(UniValue::VARR);
params.push_back(signedtxn);
if(fZdebug)
LogPrintf("%s: Sending raw xtn with txid=\n", __FUNCTION__, tx_.GetHash().ToString().c_str());
UniValue sendResultValue = sendrawtransaction(params, false, CPubKey());
if (sendResultValue.isNull()) {
throw JSONRPCError(RPC_WALLET_ERROR, "sendrawtransaction did not return an error or a txid.");
@ -644,7 +655,7 @@ bool AsyncRPCOperation_sendmany::main_impl() {
* taddr -> taddrs
* -> zaddrs
*
* Note: Consensus rule states that coinbase utxos can only be sent to a zaddr.
* Note: Consensus rule states that coinbase utxos can only be sent to a zaddr. TODO: Do they?
* Local wallet rule does not allow any change when sending coinbase utxos
* since there is currently no way to specify a change address and we don't
* want users accidentally sending excess funds to a recipient.

57
src/wallet/rpcwallet.cpp
View File

@ -1,6 +1,6 @@
// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin Core developers
// Copyright (c) 2019 The Hush developers
// Copyright (c) 2019-2020 The Hush developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
@ -62,6 +62,7 @@
#include "komodo_defs.h"
#include <string.h>
#include "sietch.h"
using namespace std;
@ -4413,6 +4414,9 @@ UniValue z_sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
// This logic will need to be updated if we add a new shielded pool
bool fromSprout = !(fromTaddr || fromSapling);
if (fromSprout)
throw JSONRPCError(RPC_INVALID_PARAMETER, "Cannot send from a Sprout zaddr, only Sapling zaddrs supported.");
UniValue outputs = params[1].get_array();
if (outputs.size()==0)
@ -4518,6 +4522,43 @@ UniValue z_sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
nTotalOut += nAmount;
}
// SIETCH: Sprinkle our cave with some magic privacy zdust
// End goal is to have this be as large as possible without slowing xtns down too much
// A value of 7 will provide much stronger linkability privacy versus pre-Sietch operations
unsigned int DEFAULT_MIN_ZOUTS=7;
unsigned int MAX_ZOUTS=25;
unsigned int MIN_ZOUTS=GetArg("--sietch-min-zouts", DEFAULT_MIN_ZOUTS);
if((MIN_ZOUTS<2) || (MIN_ZOUTS>MAX_ZOUTS)) {
fprintf(stderr,"%s: Sietch min zouts must be >=2 and <= 25, setting to default value of %d\n", __FUNCTION__, DEFAULT_MIN_ZOUTS );
MIN_ZOUTS=DEFAULT_MIN_ZOUTS;
}
while (zaddrRecipients.size() < MIN_ZOUTS) {
// OK, we identify this xtn as needing privacy zdust, we must decide how much, non-deterministically
int nAmount = 0;
int decider = 1 + GetRandInt(100); // random int between 1 and 100
string memo = "f600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000";
string zdust1, zdust2;
// Which zaddr we send to is non-deterministically chosen...
zdust1 = randomSietchZaddr();
zaddrRecipients.push_back( SendManyRecipient(zdust1, nAmount, memo) );
if(fZdebug)
fprintf(stderr,"%s: adding %s as zdust receiver\n", __FUNCTION__, zdust1.c_str());
//50% chance of adding another zout
if (decider % 2) {
zdust2 = randomSietchZaddr();
zaddrRecipients.push_back( SendManyRecipient(zdust2, nAmount, memo) );
if(fZdebug)
fprintf(stderr,"%s: adding %s as zdust receiver\n", __FUNCTION__, zdust2.c_str());
}
}
int nextBlockHeight = chainActive.Height() + 1;
CMutableTransaction mtx;
@ -4551,6 +4592,8 @@ UniValue z_sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
// As a sanity check, estimate and verify that the size of the transaction will be valid.
// Depending on the input notes, the actual tx size may turn out to be larger and perhaps invalid.
if(fZdebug)
LogPrintf("%s: Verifying xtn size is valid\n", __FUNCTION__);
size_t txsize = 0;
for (int i = 0; i < zaddrRecipients.size(); i++) {
auto address = std::get<0>(zaddrRecipients[i]);
@ -4559,11 +4602,7 @@ UniValue z_sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
if (toSapling) {
mtx.vShieldedOutput.push_back(OutputDescription());
} else {
JSDescription jsdesc;
if (mtx.fOverwintered && (mtx.nVersion >= SAPLING_TX_VERSION)) {
jsdesc.proof = GrothProof();
}
mtx.vjoinsplit.push_back(jsdesc);
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, sprout zaddr not valid");
}
}
CTransaction tx(mtx);
@ -4586,7 +4625,7 @@ UniValue z_sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
throw JSONRPCError(RPC_INVALID_PARAMETER, "Minimum number of confirmations cannot be less than 0");
}
// Fee in Zatoshis, not currency format)
// Fee in Puposhis, not currency format
CAmount nFee = ASYNC_RPC_OPERATION_DEFAULT_MINERS_FEE;
CAmount nDefaultFee = nFee;
@ -4619,6 +4658,8 @@ UniValue z_sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
o.push_back(Pair("minconf", nMinDepth));
o.push_back(Pair("fee", std::stod(FormatMoney(nFee))));
UniValue contextInfo = o;
if(fZdebug)
LogPrintf("%s: Building the raw ztransaction\n", __FUNCTION__);
// Builder (used if Sapling addresses are involved)
boost::optional<TransactionBuilder> builder;
@ -4638,6 +4679,8 @@ UniValue z_sendmany(const UniValue& params, bool fHelp, const CPubKey& mypk)
std::shared_ptr<AsyncRPCQueue> q = getAsyncRPCQueue();
std::shared_ptr<AsyncRPCOperation> operation( new AsyncRPCOperation_sendmany(builder, contextualTx, fromaddress, taddrRecipients, zaddrRecipients, nMinDepth, nFee, contextInfo) );
q->addOperation(operation);
if(fZdebug)
LogPrintf("%s: Submitted to async queue\n", __FUNCTION__);
AsyncRPCOperationId operationId = operation->getId();
return operationId;
}

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