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fa796a2eb593f60eb72679860e8d7c55ba3df0ab
xahaud/src/ripple/app/paths/PathRequest.cpp
Nik Bougalis fa796a2eb5 Inject Config: 
* Use dependency injections instead
* Remove deprecated fee interfaces
2015-09-25 06:29:07 -07:00

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//------------------------------------------------------------------------------
/*
This file is part of rippled: https://github.com/ripple/rippled
Copyright (c) 2012, 2013 Ripple Labs Inc.
Permission to use, copy, modify, and/or 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 <BeastConfig.h>
#include <ripple/app/paths/AccountCurrencies.h>
#include <ripple/app/paths/RippleCalc.h>
#include <ripple/app/paths/PathRequest.h>
#include <ripple/app/paths/PathRequests.h>
#include <ripple/app/main/Application.h>
#include <ripple/app/misc/NetworkOPs.h>
#include <ripple/basics/Log.h>
#include <ripple/core/Config.h>
#include <ripple/core/LoadFeeTrack.h>
#include <ripple/net/RPCErr.h>
#include <ripple/protocol/ErrorCodes.h>
#include <ripple/protocol/UintTypes.h>
#include <beast/module/core/text/LexicalCast.h>
#include <boost/optional.hpp>
#include <tuple>
namespace ripple {
PathRequest::PathRequest (
Application& app,
const std::shared_ptr<InfoSub>& subscriber,
int id,
PathRequests& owner,
beast::Journal journal)
: app_ (app)
, m_journal (journal)
, mOwner (owner)
, wpSubscriber (subscriber)
, jvStatus (Json::objectValue)
, mLastIndex (0)
, mInProgress (false)
, iLastLevel (0)
, bLastSuccess (false)
, iIdentifier (id)
{
if (m_journal.debug)
m_journal.debug << iIdentifier << " created";
ptCreated = boost::posix_time::microsec_clock::universal_time ();
}
PathRequest::PathRequest (
Application& app,
std::function <void(void)> const& completion,
int id,
PathRequests& owner,
beast::Journal journal)
: app_ (app)
, m_journal (journal)
, mOwner (owner)
, fCompletion (completion)
, jvStatus (Json::objectValue)
, mLastIndex (0)
, mInProgress (false)
, iLastLevel (0)
, bLastSuccess (false)
, iIdentifier (id)
{
if (m_journal.debug)
m_journal.debug << iIdentifier << " created";
ptCreated = boost::posix_time::microsec_clock::universal_time ();
}
static std::string const get_milli_diff (
boost::posix_time::ptime const& after,
boost::posix_time::ptime
const& before)
{
return beast::lexicalCastThrow <std::string> (
static_cast <unsigned> ((after - before).total_milliseconds()));
}
static std::string const get_milli_diff (boost::posix_time::ptime const& before)
{
return get_milli_diff(
boost::posix_time::microsec_clock::universal_time(), before);
}
PathRequest::~PathRequest()
{
std::string fast, full;
if (!ptQuickReply.is_not_a_date_time())
{
fast = " fast:";
fast += get_milli_diff (ptQuickReply, ptCreated);
fast += "ms";
}
if (!ptFullReply.is_not_a_date_time())
{
full = " full:";
full += get_milli_diff (ptFullReply, ptCreated);
full += "ms";
}
if (m_journal.info)
m_journal.info << iIdentifier << " complete:" << fast << full <<
" total:" << get_milli_diff(ptCreated) << "ms";
}
bool PathRequest::isNew ()
{
ScopedLockType sl (mIndexLock);
// does this path request still need its first full path
return mLastIndex == 0;
}
bool PathRequest::needsUpdate (bool newOnly, LedgerIndex index)
{
ScopedLockType sl (mIndexLock);
if (mInProgress)
{
// Another thread is handling this
return false;
}
if (newOnly && (mLastIndex != 0))
{
// Only handling new requests, this isn't new
return false;
}
if (mLastIndex >= index)
{
return false;
}
mInProgress = true;
return true;
}
bool PathRequest::hasCompletion ()
{
return bool (fCompletion);
}
void PathRequest::updateComplete ()
{
ScopedLockType sl (mIndexLock);
assert (mInProgress);
mInProgress = false;
if (fCompletion)
{
fCompletion();
fCompletion = std::function<void (void)>();
}
}
bool PathRequest::isValid (RippleLineCache::ref crCache)
{
ScopedLockType sl (mLock);
if (! raSrcAccount || ! raDstAccount)
return false;
if (! convert_all_ && (saSendMax || saDstAmount <= zero))
{
// If send max specified, dst amt must be -1.
jvStatus = rpcError(rpcDST_AMT_MALFORMED);
return false;
}
if (! crCache->getLedger()->exists(
keylet::account(*raSrcAccount)))
{
// Source account does not exist.
jvStatus = rpcError (rpcSRC_ACT_NOT_FOUND);
return false;
}
auto const& lrLedger = crCache->getLedger();
auto const sleDest = crCache->getLedger()->read(
keylet::account(*raDstAccount));
Json::Value& jvDestCur =
(jvStatus[jss::destination_currencies] = Json::arrayValue);
if (! sleDest)
{
jvDestCur.append (Json::Value (systemCurrencyCode()));
if (! saDstAmount.native ())
{
// Only XRP can be send to a non-existent account.
jvStatus = rpcError (rpcACT_NOT_FOUND);
return false;
}
if (! convert_all_ && saDstAmount <
STAmount (lrLedger->fees().accountReserve (0)))
{
// Payment must meet reserve.
jvStatus = rpcError (rpcDST_AMT_MALFORMED);
return false;
}
}
else
{
bool const disallowXRP (
sleDest->getFlags() & lsfDisallowXRP);
auto usDestCurrID = accountDestCurrencies (
*raDstAccount, crCache, ! disallowXRP);
for (auto const& currency : usDestCurrID)
jvDestCur.append (to_string (currency));
jvStatus[jss::destination_tag] =
(sleDest->getFlags() & lsfRequireDestTag);
}
jvStatus[jss::ledger_hash] = to_string (lrLedger->info().hash);
jvStatus[jss::ledger_index] = lrLedger->seq();
return true;
}
Json::Value PathRequest::doCreate (
RippleLineCache::ref& cache,
Json::Value const& value,
bool& valid)
{
Json::Value status;
if (parseJson (value) != PFR_PJ_INVALID)
{
valid = isValid (cache);
status = valid ? doUpdate(cache, true) : jvStatus;
}
else
{
valid = false;
status = jvStatus;
}
if (m_journal.debug)
{
if (valid)
{
m_journal.debug << iIdentifier
<< " valid: " << toBase58(*raSrcAccount);
m_journal.debug << iIdentifier
<< " Deliver: " << saDstAmount.getFullText ();
}
else
{
m_journal.debug << iIdentifier << " invalid";
}
}
return status;
}
int PathRequest::parseJson (Json::Value const& jvParams)
{
if (! jvParams.isMember(jss::source_account))
{
jvStatus = rpcError(rpcSRC_ACT_MISSING);
return PFR_PJ_INVALID;
}
if (! jvParams.isMember(jss::destination_account))
{
jvStatus = rpcError(rpcDST_ACT_MISSING);
return PFR_PJ_INVALID;
}
if (! jvParams.isMember(jss::destination_amount))
{
jvStatus = rpcError(rpcDST_AMT_MISSING);
return PFR_PJ_INVALID;
}
raSrcAccount = parseBase58<AccountID>(
jvParams[jss::source_account].asString());
if (! raSrcAccount)
{
jvStatus = rpcError (rpcSRC_ACT_MALFORMED);
return PFR_PJ_INVALID;
}
raDstAccount = parseBase58<AccountID>(
jvParams[jss::destination_account].asString());
if (! raDstAccount)
{
jvStatus = rpcError (rpcDST_ACT_MALFORMED);
return PFR_PJ_INVALID;
}
if (! amountFromJsonNoThrow (
saDstAmount, jvParams[jss::destination_amount]))
{
jvStatus = rpcError (rpcDST_AMT_MALFORMED);
return PFR_PJ_INVALID;
}
convert_all_ =
saDstAmount == STAmount(saDstAmount.issue(), 1u, 0, true);
if ((saDstAmount.getCurrency ().isZero () &&
saDstAmount.getIssuer ().isNonZero ()) ||
(saDstAmount.getCurrency () == badCurrency ()) ||
(! convert_all_ && saDstAmount <= zero))
{
jvStatus = rpcError (rpcDST_AMT_MALFORMED);
return PFR_PJ_INVALID;
}
if (jvParams.isMember(jss::send_max))
{
// Send_max requires destination amount to be -1.
if (! convert_all_)
{
jvStatus = rpcError(rpcDST_AMT_MALFORMED);
return PFR_PJ_INVALID;
}
saSendMax.emplace();
if (! amountFromJsonNoThrow(
*saSendMax, jvParams[jss::send_max]) ||
(saSendMax->getCurrency().isZero() &&
saSendMax->getIssuer().isNonZero()) ||
(saSendMax->getCurrency() == badCurrency()) ||
(*saSendMax <= zero &&
*saSendMax != STAmount(saSendMax->issue(), 1u, 0, true)))
{
jvStatus = rpcError(rpcSENDMAX_MALFORMED);
return PFR_PJ_INVALID;
}
}
if (jvParams.isMember (jss::source_currencies))
{
Json::Value const& jvSrcCur = jvParams[jss::source_currencies];
if (!jvSrcCur.isArray ())
{
jvStatus = rpcError (rpcSRC_CUR_MALFORMED);
return PFR_PJ_INVALID;
}
sciSourceCurrencies.clear ();
for (unsigned i = 0; i < jvSrcCur.size (); ++i)
{
Json::Value const& jvCur = jvSrcCur[i];
Currency uCur;
AccountID uIss;
if (! jvCur.isObject() ||
! jvCur.isMember (jss::currency) ||
! to_currency (uCur, jvCur[jss::currency].asString ()))
{
jvStatus = rpcError (rpcSRC_CUR_MALFORMED);
return PFR_PJ_INVALID;
}
if (jvCur.isMember (jss::issuer) &&
!to_issuer (uIss, jvCur[jss::issuer].asString ()))
{
jvStatus = rpcError (rpcSRC_ISR_MALFORMED);
}
if (uCur.isZero () && uIss.isNonZero ())
{
jvStatus = rpcError (rpcSRC_CUR_MALFORMED);
return PFR_PJ_INVALID;
}
if (uCur.isNonZero() && uIss.isZero())
uIss = *raSrcAccount;
if (saSendMax)
{
// If the currencies don't match, ignore the source currency.
if (uCur == saSendMax->getCurrency())
{
// If neither is the source and they are not equal, then the
// source issuer is illegal.
if (uIss != *raSrcAccount &&
saSendMax->getIssuer() != *raSrcAccount &&
uIss != saSendMax->getIssuer())
{
jvStatus = rpcError (rpcSRC_ISR_MALFORMED);
return PFR_PJ_INVALID;
}
// If both are the source, use the source.
// Otherwise, use the one that's not the source.
if (uIss != *raSrcAccount)
sciSourceCurrencies.insert({uCur, uIss});
else if (saSendMax->getIssuer() != *raSrcAccount)
sciSourceCurrencies.insert({uCur, saSendMax->getIssuer()});
else
sciSourceCurrencies.insert({uCur, *raSrcAccount});
}
}
else
{
sciSourceCurrencies.insert({uCur, uIss});
}
}
}
if (jvParams.isMember ("id"))
jvId = jvParams["id"];
return PFR_PJ_NOCHANGE;
}
Json::Value PathRequest::doClose (Json::Value const&)
{
m_journal.debug << iIdentifier << " closed";
ScopedLockType sl (mLock);
jvStatus[jss::closed] = true;
return jvStatus;
}
Json::Value PathRequest::doStatus (Json::Value const&)
{
ScopedLockType sl (mLock);
jvStatus[jss::status] = jss::success;
return jvStatus;
}
void PathRequest::resetLevel (int l)
{
if (iLastLevel > l)
iLastLevel = l;
}
bool
PathRequest::findPaths (
RippleLineCache::ref cache,
FindPaths& fp, Issue const& issue,
Json::Value& jvArray)
{
STPath fullLiquidityPath;
auto result = fp.findPathsForIssue(issue,
mContext[issue], fullLiquidityPath, app_);
if (! result)
{
m_journal.debug << iIdentifier << " No paths found";
return false;
}
mContext[issue] = *result;
boost::optional<PaymentSandbox> sandbox;
sandbox.emplace(&*cache->getLedger(), tapNONE);
auto& sourceAccount = ! isXRP(issue.account)
? issue.account
: isXRP(issue.currency)
? xrpAccount()
: *raSrcAccount;
STAmount saMaxAmount = saSendMax.value_or(
STAmount({issue.currency, sourceAccount}, 1u, 0, true));
m_journal.debug << iIdentifier
<< " Paths found, calling rippleCalc";
path::RippleCalc::Input rcInput;
if (convert_all_)
rcInput.partialPaymentAllowed = true;
auto rc = path::RippleCalc::rippleCalculate(
*sandbox, saMaxAmount,
convert_all_ ? STAmount(saDstAmount.issue(), STAmount::cMaxValue,
STAmount::cMaxOffset) : saDstAmount,
*raDstAccount, *raSrcAccount, *result, &rcInput);
if (! convert_all_ &&
! fullLiquidityPath.empty() &&
(rc.result() == terNO_LINE || rc.result() == tecPATH_PARTIAL))
{
m_journal.debug << iIdentifier
<< " Trying with an extra path element";
result->push_back(fullLiquidityPath);
sandbox.emplace(&*cache->getLedger(), tapNONE);
rc = path::RippleCalc::rippleCalculate(
*sandbox, saMaxAmount, saDstAmount,
*raDstAccount, *raSrcAccount, *result);
if (rc.result() != tesSUCCESS)
{
m_journal.warning << iIdentifier
<< " Failed with covering path "
<< transHuman(rc.result());
}
else
{
m_journal.debug << iIdentifier
<< " Extra path element gives "
<< transHuman(rc.result());
}
}
if (rc.result () == tesSUCCESS)
{
Json::Value jvEntry (Json::objectValue);
rc.actualAmountIn.setIssuer (sourceAccount);
jvEntry[jss::source_amount] = rc.actualAmountIn.getJson (0);
jvEntry[jss::paths_computed] = result->getJson(0);
if (convert_all_)
jvEntry[jss::destination_amount] = rc.actualAmountOut.getJson(0);
if (hasCompletion ())
{
// Old ripple_path_find API requires this
jvEntry[jss::paths_canonical] = Json::arrayValue;
}
jvArray.append (jvEntry);
return true;
}
m_journal.debug << iIdentifier << " rippleCalc returns "
<< transHuman (rc.result ());
return false;
}
Json::Value PathRequest::doUpdate (RippleLineCache::ref cache, bool fast)
{
m_journal.debug << iIdentifier << " update " << (fast ? "fast" : "normal");
ScopedLockType sl (mLock);
if (!isValid (cache))
return jvStatus;
jvStatus = Json::objectValue;
auto sourceCurrencies = sciSourceCurrencies;
if (sourceCurrencies.empty ())
{
auto usCurrencies =
accountSourceCurrencies (*raSrcAccount, cache, true);
bool sameAccount = *raSrcAccount == *raDstAccount;
for (auto const& c: usCurrencies)
{
if (!sameAccount || (c != saDstAmount.getCurrency ()))
{
if (c.isZero ())
sourceCurrencies.insert ({c, xrpAccount()});
else
sourceCurrencies.insert ({c, *raSrcAccount});
}
}
}
if (hasCompletion ())
{
// Old ripple_path_find API gives destination_currencies
auto& destCurrencies = (jvStatus[jss::destination_currencies] = Json::arrayValue);
auto usCurrencies = accountDestCurrencies (*raDstAccount, cache, true);
for (auto const& c : usCurrencies)
destCurrencies.append (to_string (c));
}
jvStatus[jss::source_account] = app_.accountIDCache().toBase58(*raSrcAccount);
jvStatus[jss::destination_account] = app_.accountIDCache().toBase58(*raDstAccount);
jvStatus[jss::destination_amount] = saDstAmount.getJson (0);
jvStatus[jss::full_reply] = ! fast;
if (jvId)
jvStatus["id"] = jvId;
int iLevel = iLastLevel;
bool loaded = app_.getFeeTrack().isLoadedLocal();
if (iLevel == 0)
{
// first pass
if (loaded || fast)
iLevel = app_.config().PATH_SEARCH_FAST;
else
iLevel = app_.config().PATH_SEARCH;
}
else if ((iLevel == app_.config().PATH_SEARCH_FAST) && !fast)
{
// leaving fast pathfinding
iLevel = app_.config().PATH_SEARCH;
if (loaded && (iLevel > app_.config().PATH_SEARCH_FAST))
--iLevel;
}
else if (bLastSuccess)
{
// decrement, if possible
if (iLevel > app_.config().PATH_SEARCH ||
(loaded && (iLevel > app_.config().PATH_SEARCH_FAST)))
--iLevel;
}
else
{
// adjust as needed
if (!loaded && (iLevel < app_.config().PATH_SEARCH_MAX))
++iLevel;
if (loaded && (iLevel > app_.config().PATH_SEARCH_FAST))
--iLevel;
}
m_journal.debug << iIdentifier << " processing at level " << iLevel;
bool found = false;
Json::Value jvArray = Json::arrayValue;
FindPaths fp (
cache,
*raSrcAccount,
*raDstAccount,
convert_all_ ? STAmount(saDstAmount.issue(), STAmount::cMaxValue,
STAmount::cMaxOffset) : saDstAmount,
saSendMax,
iLevel,
4); // iMaxPaths
for (auto const& i: sourceCurrencies)
{
JLOG(m_journal.debug)
<< iIdentifier
<< " Trying to find paths: "
<< STAmount(i, 1).getFullText();
if (findPaths(cache, fp, i, jvArray))
found = true;
}
iLastLevel = iLevel;
bLastSuccess = found;
if (fast && ptQuickReply.is_not_a_date_time())
{
ptQuickReply = boost::posix_time::microsec_clock::universal_time();
mOwner.reportFast ((ptQuickReply-ptCreated).total_milliseconds());
}
else if (!fast && ptFullReply.is_not_a_date_time())
{
ptFullReply = boost::posix_time::microsec_clock::universal_time();
mOwner.reportFull ((ptFullReply-ptCreated).total_milliseconds());
}
jvStatus[jss::alternatives] = jvArray;
return jvStatus;
}
InfoSub::pointer PathRequest::getSubscriber ()
{
return wpSubscriber.lock ();
}
} // ripple
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