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64b55c0f88
At this point all of the jss::* names are defined in the same file. That file has been named JsonFields.h. That file name has little to do with either JsonStaticStrings (which is what jss is short for) or with jss. The file is renamed to jss.h so the file name better reflects what the file contains. All includes of that file are fixed. A few include order issues are tidied up along the way.
279 lines
8.6 KiB
C++
279 lines
8.6 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#include <ripple/app/paths/PathRequests.h>
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#include <ripple/app/ledger/LedgerMaster.h>
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#include <ripple/app/main/Application.h>
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#include <ripple/basics/Log.h>
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#include <ripple/core/JobQueue.h>
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#include <ripple/net/RPCErr.h>
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#include <ripple/protocol/ErrorCodes.h>
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#include <ripple/resource/Fees.h>
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#include <ripple/protocol/jss.h>
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#include <algorithm>
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namespace ripple {
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/** Get the current RippleLineCache, updating it if necessary.
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Get the correct ledger to use.
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*/
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std::shared_ptr<RippleLineCache>
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PathRequests::getLineCache (
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std::shared_ptr <ReadView const> const& ledger,
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bool authoritative)
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{
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ScopedLockType sl (mLock);
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std::uint32_t lineSeq = mLineCache ? mLineCache->getLedger()->seq() : 0;
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std::uint32_t lgrSeq = ledger->seq();
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if ( (lineSeq == 0) || // no ledger
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(authoritative && (lgrSeq > lineSeq)) || // newer authoritative ledger
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(authoritative && ((lgrSeq + 8) < lineSeq)) || // we jumped way back for some reason
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(lgrSeq > (lineSeq + 8))) // we jumped way forward for some reason
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{
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mLineCache = std::make_shared<RippleLineCache> (ledger);
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}
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return mLineCache;
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}
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void PathRequests::updateAll (std::shared_ptr <ReadView const> const& inLedger,
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Job::CancelCallback shouldCancel)
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{
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auto event =
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app_.getJobQueue().makeLoadEvent(
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jtPATH_FIND, "PathRequest::updateAll");
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std::vector<PathRequest::wptr> requests;
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std::shared_ptr<RippleLineCache> cache;
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// Get the ledger and cache we should be using
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{
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ScopedLockType sl (mLock);
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requests = requests_;
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cache = getLineCache (inLedger, true);
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}
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bool newRequests = app_.getLedgerMaster().isNewPathRequest();
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bool mustBreak = false;
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JLOG (mJournal.trace()) <<
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"updateAll seq=" << cache->getLedger()->seq() <<
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", " << requests.size() << " requests";
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int processed = 0, removed = 0;
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do
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{
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for (auto const& wr : requests)
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{
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if (shouldCancel())
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break;
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auto request = wr.lock ();
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bool remove = true;
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if (request)
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{
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if (!request->needsUpdate (newRequests, cache->getLedger()->seq()))
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remove = false;
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else
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{
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if (auto ipSub = request->getSubscriber ())
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{
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if (!ipSub->getConsumer ().warn ())
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{
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Json::Value update = request->doUpdate (cache, false);
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request->updateComplete ();
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update[jss::type] = "path_find";
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ipSub->send (update, false);
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remove = false;
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++processed;
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}
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}
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else if (request->hasCompletion ())
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{
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// One-shot request with completion function
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request->doUpdate (cache, false);
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request->updateComplete();
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++processed;
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}
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}
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}
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if (remove)
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{
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ScopedLockType sl (mLock);
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// Remove any dangling weak pointers or weak
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// pointers that refer to this path request.
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auto ret = std::remove_if (
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requests_.begin(), requests_.end(),
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[&removed,&request](auto const& wl)
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{
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auto r = wl.lock();
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if (r && r != request)
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return false;
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++removed;
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return true;
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});
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requests_.erase (ret, requests_.end());
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}
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mustBreak = !newRequests &&
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app_.getLedgerMaster().isNewPathRequest();
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// We weren't handling new requests and then
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// there was a new request
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if (mustBreak)
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break;
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}
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if (mustBreak)
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{ // a new request came in while we were working
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newRequests = true;
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}
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else if (newRequests)
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{ // we only did new requests, so we always need a last pass
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newRequests = app_.getLedgerMaster().isNewPathRequest();
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}
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else
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{ // if there are no new requests, we are done
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newRequests = app_.getLedgerMaster().isNewPathRequest();
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if (!newRequests)
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break;
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}
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{
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// Get the latest requests, cache, and ledger for next pass
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ScopedLockType sl (mLock);
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if (requests_.empty())
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break;
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requests = requests_;
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cache = getLineCache (cache->getLedger(), false);
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}
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}
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while (!shouldCancel ());
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JLOG (mJournal.debug()) <<
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"updateAll complete: " << processed << " processed and " <<
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removed << " removed";
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}
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void PathRequests::insertPathRequest (
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PathRequest::pointer const& req)
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{
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ScopedLockType sl (mLock);
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// Insert after any older unserviced requests but before
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// any serviced requests
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auto ret = std::find_if (
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requests_.begin(), requests_.end(),
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[](auto const& wl)
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{
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auto r = wl.lock();
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// We come before handled requests
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return r && !r->isNew();
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});
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requests_.emplace (ret, req);
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}
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// Make a new-style path_find request
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Json::Value
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PathRequests::makePathRequest(
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std::shared_ptr <InfoSub> const& subscriber,
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std::shared_ptr<ReadView const> const& inLedger,
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Json::Value const& requestJson)
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{
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auto req = std::make_shared<PathRequest> (
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app_, subscriber, ++mLastIdentifier, *this, mJournal);
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auto result = req->doCreate (
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getLineCache (inLedger, false), requestJson);
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if (result.first)
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{
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subscriber->setPathRequest (req);
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insertPathRequest (req);
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app_.getLedgerMaster().newPathRequest();
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}
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return std::move (result.second);
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}
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// Make an old-style ripple_path_find request
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Json::Value
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PathRequests::makeLegacyPathRequest(
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PathRequest::pointer& req,
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std::function <void (void)> completion,
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Resource::Consumer& consumer,
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std::shared_ptr<ReadView const> const& inLedger,
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Json::Value const& request)
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{
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// This assignment must take place before the
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// completion function is called
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req = std::make_shared<PathRequest> (
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app_, completion, consumer, ++mLastIdentifier,
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*this, mJournal);
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auto result = req->doCreate (
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getLineCache (inLedger, false), request);
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if (!result.first)
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{
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req.reset();
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}
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else
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{
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insertPathRequest (req);
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if (! app_.getLedgerMaster().newPathRequest())
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{
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// The newPathRequest failed. Tell the caller.
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result.second = rpcError (rpcTOO_BUSY);
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req.reset();
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}
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}
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return std::move (result.second);
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}
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Json::Value
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PathRequests::doLegacyPathRequest (
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Resource::Consumer& consumer,
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std::shared_ptr<ReadView const> const& inLedger,
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Json::Value const& request)
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{
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auto cache = std::make_shared<RippleLineCache> (inLedger);
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auto req = std::make_shared<PathRequest> (app_, []{},
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consumer, ++mLastIdentifier, *this, mJournal);
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auto result = req->doCreate (cache, request);
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if (result.first)
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result.second = req->doUpdate (cache, false);
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return std::move (result.second);
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}
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} // ripple
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