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arangodb/arangod/MMFiles/MMFilesCollection.cpp

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////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Jan Steemann
////////////////////////////////////////////////////////////////////////////////
#include "MMFilesCollection.h"
#include "ApplicationFeatures/ApplicationServer.h"
#include "Basics/FileUtils.h"
#include "Basics/ReadLocker.h"
#include "Basics/StaticStrings.h"
#include "Basics/VelocyPackHelper.h"
#include "Basics/WriteLocker.h"
#include "Basics/encoding.h"
#include "Basics/process-utils.h"
#include "Cluster/ClusterMethods.h"
#include "Logger/Logger.h"
#include "MMFiles/MMFilesDatafile.h"
#include "MMFiles/MMFilesDatafileHelper.h"
#include "MMFiles/MMFilesDocumentOperation.h"
#include "MMFiles/MMFilesDocumentPosition.h"
#include "MMFiles/MMFilesIndexElement.h"
#include "MMFiles/MMFilesLogfileManager.h"
#include "MMFiles/MMFilesPrimaryIndex.h"
#include "MMFiles/MMFilesTransactionState.h"
#include "RestServer/DatabaseFeature.h"
#include "StorageEngine/EngineSelectorFeature.h"
#include "StorageEngine/StorageEngine.h"
#include "Transaction/Helpers.h"
#include "Transaction/Methods.h"
#include "Utils/CollectionNameResolver.h"
#include "Utils/CollectionReadLocker.h"
#include "Utils/CollectionWriteLocker.h"
#include "Utils/OperationOptions.h"
#include "Utils/SingleCollectionTransaction.h"
#include "Utils/StandaloneTransactionContext.h"
#include "VocBase/KeyGenerator.h"
#include "VocBase/LogicalCollection.h"
#include "VocBase/ticks.h"
using namespace arangodb;
namespace {
/// @brief find a statistics container for a given file id
static DatafileStatisticsContainer* FindDatafileStats(
MMFilesCollection::OpenIteratorState* state, TRI_voc_fid_t fid) {
auto it = state->_stats.find(fid);
if (it != state->_stats.end()) {
return (*it).second;
}
auto stats = std::make_unique<DatafileStatisticsContainer>();
state->_stats.emplace(fid, stats.get());
return stats.release();
}
} // namespace
/// @brief process a document (or edge) marker when opening a collection
int MMFilesCollection::OpenIteratorHandleDocumentMarker(TRI_df_marker_t const* marker,
MMFilesDatafile* datafile,
MMFilesCollection::OpenIteratorState* state) {
LogicalCollection* collection = state->_collection;
MMFilesCollection* c = static_cast<MMFilesCollection*>(collection->getPhysical());
transaction::Methods* trx = state->_trx;
TRI_ASSERT(trx != nullptr);
VPackSlice const slice(reinterpret_cast<char const*>(marker) + MMFilesDatafileHelper::VPackOffset(TRI_DF_MARKER_VPACK_DOCUMENT));
uint8_t const* vpack = slice.begin();
VPackSlice keySlice;
TRI_voc_rid_t revisionId;
transaction::Methods::extractKeyAndRevFromDocument(slice, keySlice, revisionId);
c->setRevision(revisionId, false);
if (state->_trackKeys) {
VPackValueLength length;
char const* p = keySlice.getString(length);
collection->keyGenerator()->track(p, length);
}
++state->_documents;
TRI_voc_fid_t const fid = datafile->fid();
if (state->_fid != fid) {
// update the state
state->_fid = fid; // when we're here, we're looking at a datafile
state->_dfi = FindDatafileStats(state, fid);
}
// no primary index lock required here because we are the only ones reading
// from the index ATM
MMFilesSimpleIndexElement* found = state->_primaryIndex->lookupKeyRef(trx, keySlice, state->_mmdr);
// it is a new entry
if (found == nullptr || found->revisionId() == 0) {
c->insertRevision(revisionId, vpack, fid, false, false);
// insert into primary index
int res = state->_primaryIndex->insertKey(trx, revisionId, VPackSlice(vpack), state->_mmdr);
if (res != TRI_ERROR_NO_ERROR) {
c->removeRevision(revisionId, false);
LOG_TOPIC(ERR, arangodb::Logger::FIXME) << "inserting document into primary index failed with error: " << TRI_errno_string(res);
return res;
}
// update the datafile info
state->_dfi->numberAlive++;
state->_dfi->sizeAlive += MMFilesDatafileHelper::AlignedMarkerSize<int64_t>(marker);
}
// it is an update
else {
TRI_voc_rid_t const oldRevisionId = found->revisionId();
// update the revision id in primary index
found->updateRevisionId(revisionId, static_cast<uint32_t>(keySlice.begin() - vpack));
MMFilesDocumentPosition const old = c->lookupRevision(oldRevisionId);
// remove old revision
c->removeRevision(oldRevisionId, false);
// insert new revision
c->insertRevision(revisionId, vpack, fid, false, false);
// update the datafile info
DatafileStatisticsContainer* dfi;
if (old.fid() == state->_fid) {
dfi = state->_dfi;
} else {
dfi = FindDatafileStats(state, old.fid());
}
if (old.dataptr() != nullptr) {
uint8_t const* vpack = static_cast<uint8_t const*>(old.dataptr());
int64_t size = static_cast<int64_t>(MMFilesDatafileHelper::VPackOffset(TRI_DF_MARKER_VPACK_DOCUMENT) + VPackSlice(vpack).byteSize());
dfi->numberAlive--;
dfi->sizeAlive -= encoding::alignedSize<int64_t>(size);
dfi->numberDead++;
dfi->sizeDead += encoding::alignedSize<int64_t>(size);
}
state->_dfi->numberAlive++;
state->_dfi->sizeAlive += MMFilesDatafileHelper::AlignedMarkerSize<int64_t>(marker);
}
return TRI_ERROR_NO_ERROR;
}
/// @brief process a deletion marker when opening a collection
int MMFilesCollection::OpenIteratorHandleDeletionMarker(TRI_df_marker_t const* marker,
MMFilesDatafile* datafile,
MMFilesCollection::OpenIteratorState* state) {
LogicalCollection* collection = state->_collection;
MMFilesCollection* c = static_cast<MMFilesCollection*>(collection->getPhysical());
transaction::Methods* trx = state->_trx;
VPackSlice const slice(reinterpret_cast<char const*>(marker) + MMFilesDatafileHelper::VPackOffset(TRI_DF_MARKER_VPACK_REMOVE));
VPackSlice keySlice;
TRI_voc_rid_t revisionId;
transaction::Methods::extractKeyAndRevFromDocument(slice, keySlice, revisionId);
c->setRevision(revisionId, false);
if (state->_trackKeys) {
VPackValueLength length;
char const* p = keySlice.getString(length);
collection->keyGenerator()->track(p, length);
}
++state->_deletions;
if (state->_fid != datafile->fid()) {
// update the state
state->_fid = datafile->fid();
state->_dfi = FindDatafileStats(state, datafile->fid());
}
// no primary index lock required here because we are the only ones reading
// from the index ATM
MMFilesSimpleIndexElement found = state->_primaryIndex->lookupKey(trx, keySlice, state->_mmdr);
// it is a new entry, so we missed the create
if (!found) {
// update the datafile info
state->_dfi->numberDeletions++;
}
// it is a real delete
else {
TRI_voc_rid_t oldRevisionId = found.revisionId();
MMFilesDocumentPosition const old = c->lookupRevision(oldRevisionId);
// update the datafile info
DatafileStatisticsContainer* dfi;
if (old.fid() == state->_fid) {
dfi = state->_dfi;
} else {
dfi = FindDatafileStats(state, old.fid());
}
TRI_ASSERT(old.dataptr() != nullptr);
uint8_t const* vpack = static_cast<uint8_t const*>(old.dataptr());
int64_t size = encoding::alignedSize<int64_t>(MMFilesDatafileHelper::VPackOffset(TRI_DF_MARKER_VPACK_DOCUMENT) + VPackSlice(vpack).byteSize());
dfi->numberAlive--;
dfi->sizeAlive -= encoding::alignedSize<int64_t>(size);
dfi->numberDead++;
dfi->sizeDead += encoding::alignedSize<int64_t>(size);
state->_dfi->numberDeletions++;
state->_primaryIndex->removeKey(trx, oldRevisionId, VPackSlice(vpack), state->_mmdr);
c->removeRevision(oldRevisionId, true);
}
return TRI_ERROR_NO_ERROR;
}
/// @brief iterator for open
bool MMFilesCollection::OpenIterator(TRI_df_marker_t const* marker, MMFilesCollection::OpenIteratorState* data,
MMFilesDatafile* datafile) {
TRI_voc_tick_t const tick = marker->getTick();
TRI_df_marker_type_t const type = marker->getType();
int res;
if (type == TRI_DF_MARKER_VPACK_DOCUMENT) {
res = OpenIteratorHandleDocumentMarker(marker, datafile, data);
if (datafile->_dataMin == 0) {
datafile->_dataMin = tick;
}
if (tick > datafile->_dataMax) {
datafile->_dataMax = tick;
}
if (++data->_operations % 1024 == 0) {
data->_mmdr.clear();
}
} else if (type == TRI_DF_MARKER_VPACK_REMOVE) {
res = OpenIteratorHandleDeletionMarker(marker, datafile, data);
if (++data->_operations % 1024 == 0) {
data->_mmdr.clear();
}
} else {
if (type == TRI_DF_MARKER_HEADER) {
// ensure there is a datafile info entry for each datafile of the
// collection
FindDatafileStats(data, datafile->fid());
}
LOG_TOPIC(TRACE, arangodb::Logger::FIXME) << "skipping marker type " << TRI_NameMarkerDatafile(marker);
res = TRI_ERROR_NO_ERROR;
}
if (datafile->_tickMin == 0) {
datafile->_tickMin = tick;
}
if (tick > datafile->_tickMax) {
datafile->_tickMax = tick;
}
if (tick > data->_collection->maxTick()) {
if (type != TRI_DF_MARKER_HEADER &&
type != TRI_DF_MARKER_FOOTER &&
type != TRI_DF_MARKER_COL_HEADER &&
type != TRI_DF_MARKER_PROLOGUE) {
data->_collection->maxTick(tick);
}
}
return (res == TRI_ERROR_NO_ERROR);
}
MMFilesCollection::MMFilesCollection(LogicalCollection* collection)
: PhysicalCollection(collection)
, _ditches(collection)
, _initialCount(0), _lastRevision(0)
, _uncollectedLogfileEntries(0)
{}
MMFilesCollection::~MMFilesCollection() {
try {
close();
} catch (...) {
// dtor must not propagate exceptions
}
}
TRI_voc_rid_t MMFilesCollection::revision() const {
return _lastRevision;
}
void MMFilesCollection::setRevision(TRI_voc_rid_t revision, bool force) {
if (force || revision > _lastRevision) {
_lastRevision = revision;
}
}
int64_t MMFilesCollection::initialCount() const {
return _initialCount;
}
void MMFilesCollection::updateCount(int64_t count) {
_initialCount = count;
}
/// @brief closes an open collection
int MMFilesCollection::close() {
{
WRITE_LOCKER(writeLocker, _filesLock);
// close compactor files
closeDatafiles(_compactors);
for (auto& it : _compactors) {
delete it;
}
_compactors.clear();
// close journal files
closeDatafiles(_journals);
for (auto& it : _journals) {
delete it;
}
_journals.clear();
// close datafiles
closeDatafiles(_datafiles);
for (auto& it : _datafiles) {
delete it;
}
_datafiles.clear();
}
_lastRevision = 0;
// clear revisions lookup table
_revisionsCache.clear();
return TRI_ERROR_NO_ERROR;
}
/// @brief seal a datafile
int MMFilesCollection::sealDatafile(MMFilesDatafile* datafile, bool isCompactor) {
int res = datafile->seal();
if (res != TRI_ERROR_NO_ERROR) {
LOG_TOPIC(ERR, arangodb::Logger::FIXME) << "failed to seal journal '" << datafile->getName()
<< "': " << TRI_errno_string(res);
return res;
}
if (!isCompactor && datafile->isPhysical()) {
// rename the file
std::string dname("datafile-" + std::to_string(datafile->fid()) + ".db");
std::string filename = arangodb::basics::FileUtils::buildFilename(_logicalCollection->path(), dname);
res = datafile->rename(filename);
if (res == TRI_ERROR_NO_ERROR) {
LOG_TOPIC(TRACE, arangodb::Logger::FIXME) << "closed file '" << datafile->getName() << "'";
} else {
LOG_TOPIC(ERR, arangodb::Logger::FIXME) << "failed to rename datafile '" << datafile->getName()
<< "' to '" << filename << "': " << TRI_errno_string(res);
}
}
return res;
}
/// @brief rotate the active journal - will do nothing if there is no journal
int MMFilesCollection::rotateActiveJournal() {
WRITE_LOCKER(writeLocker, _filesLock);
// note: only journals need to be handled here as the journal is the
// only place that's ever written to. if a journal is full, it will have been
// sealed and synced already
if (_journals.empty()) {
return TRI_ERROR_ARANGO_NO_JOURNAL;
}
MMFilesDatafile* datafile = _journals[0];
TRI_ASSERT(datafile != nullptr);
// make sure we have enough room in the target vector before we go on
_datafiles.reserve(_datafiles.size() + 1);
int res = sealDatafile(datafile, false);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
// shouldn't throw as we reserved enough space before
_datafiles.emplace_back(datafile);
TRI_ASSERT(!_journals.empty());
TRI_ASSERT(_journals.back() == datafile);
_journals.erase(_journals.begin());
TRI_ASSERT(_journals.empty());
return res;
}
/// @brief sync the active journal - will do nothing if there is no journal
/// or if the journal is volatile
int MMFilesCollection::syncActiveJournal() {
WRITE_LOCKER(writeLocker, _filesLock);
// note: only journals need to be handled here as the journal is the
// only place that's ever written to. if a journal is full, it will have been
// sealed and synced already
if (_journals.empty()) {
// nothing to do
return TRI_ERROR_NO_ERROR;
}
MMFilesDatafile* datafile = _journals[0];
TRI_ASSERT(datafile != nullptr);
int res = TRI_ERROR_NO_ERROR;
// we only need to care about physical datafiles
// anonymous regions do not need to be synced
if (datafile->isPhysical()) {
char const* synced = datafile->_synced;
char* written = datafile->_written;
if (synced < written) {
bool ok = datafile->sync(synced, written);
if (ok) {
LOG_TOPIC(TRACE, Logger::COLLECTOR) << "msync succeeded "
<< (void*)synced << ", size "
<< (written - synced);
datafile->_synced = written;
} else {
res = TRI_errno();
if (res == TRI_ERROR_NO_ERROR) {
// oops, error code got lost
res = TRI_ERROR_INTERNAL;
}
LOG_TOPIC(ERR, Logger::COLLECTOR)
<< "msync failed with: " << TRI_last_error();
datafile->setState(TRI_DF_STATE_WRITE_ERROR);
}
}
}
return res;
}
/// @brief reserve space in the current journal. if no create exists or the
/// current journal cannot provide enough space, close the old journal and
/// create a new one
int MMFilesCollection::reserveJournalSpace(TRI_voc_tick_t tick,
TRI_voc_size_t size,
char*& resultPosition,
MMFilesDatafile*& resultDatafile) {
// reset results
resultPosition = nullptr;
resultDatafile = nullptr;
WRITE_LOCKER(writeLocker, _filesLock);
// start with configured journal size
TRI_voc_size_t targetSize = static_cast<TRI_voc_size_t>(_logicalCollection->journalSize());
// make sure that the document fits
while (targetSize - 256 < size) {
targetSize *= 2;
}
while (true) {
// no need to go on if the collection is already deleted
if (_logicalCollection->status() == TRI_VOC_COL_STATUS_DELETED) {
return TRI_ERROR_ARANGO_COLLECTION_NOT_FOUND;
}
MMFilesDatafile* datafile = nullptr;
if (_journals.empty()) {
// create enough room in the journals vector
_journals.reserve(_journals.size() + 1);
try {
std::unique_ptr<MMFilesDatafile> df(createDatafile(tick, targetSize, false));
// shouldn't throw as we reserved enough space before
_journals.emplace_back(df.get());
df.release();
} catch (basics::Exception const& ex) {
LOG_TOPIC(ERR, Logger::COLLECTOR) << "cannot select journal: " << ex.what();
return ex.code();
} catch (std::exception const& ex) {
LOG_TOPIC(ERR, Logger::COLLECTOR) << "cannot select journal: " << ex.what();
return TRI_ERROR_INTERNAL;
} catch (...) {
LOG_TOPIC(ERR, Logger::COLLECTOR) << "cannot select journal: unknown exception";
return TRI_ERROR_INTERNAL;
}
}
// select datafile
TRI_ASSERT(!_journals.empty());
datafile = _journals[0];
TRI_ASSERT(datafile != nullptr);
// try to reserve space in the datafile
TRI_df_marker_t* position = nullptr;
int res = datafile->reserveElement(size, &position, targetSize);
// found a datafile with enough space left
if (res == TRI_ERROR_NO_ERROR) {
datafile->_written = ((char*)position) + size;
// set result
resultPosition = reinterpret_cast<char*>(position);
resultDatafile = datafile;
return TRI_ERROR_NO_ERROR;
}
if (res != TRI_ERROR_ARANGO_DATAFILE_FULL) {
// some other error
LOG_TOPIC(ERR, Logger::COLLECTOR) << "cannot select journal: '"
<< TRI_last_error() << "'";
return res;
}
// TRI_ERROR_ARANGO_DATAFILE_FULL...
// journal is full, close it and sync
LOG_TOPIC(DEBUG, Logger::COLLECTOR) << "closing full journal '"
<< datafile->getName() << "'";
// make sure we have enough room in the target vector before we go on
_datafiles.reserve(_datafiles.size() + 1);
res = sealDatafile(datafile, false);
// move journal into _datafiles vector
// this shouldn't fail, as we have reserved space before already
_datafiles.emplace_back(datafile);
// and finally erase it from _journals vector
TRI_ASSERT(!_journals.empty());
TRI_ASSERT(_journals.back() == datafile);
_journals.erase(_journals.begin());
TRI_ASSERT(_journals.empty());
if (res != TRI_ERROR_NO_ERROR) {
// an error occurred, we must stop here
return res;
}
} // otherwise, next iteration!
return TRI_ERROR_ARANGO_NO_JOURNAL;
}
/// @brief create compactor file
MMFilesDatafile* MMFilesCollection::createCompactor(TRI_voc_fid_t fid,
TRI_voc_size_t maximalSize) {
WRITE_LOCKER(writeLocker, _filesLock);
TRI_ASSERT(_compactors.empty());
// reserve enough space for the later addition
_compactors.reserve(_compactors.size() + 1);
std::unique_ptr<MMFilesDatafile> compactor(createDatafile(fid, static_cast<TRI_voc_size_t>(maximalSize), true));
// should not throw, as we've reserved enough space before
_compactors.emplace_back(compactor.get());
return compactor.release();
}
/// @brief close an existing compactor
int MMFilesCollection::closeCompactor(MMFilesDatafile* datafile) {
WRITE_LOCKER(writeLocker, _filesLock);
if (_compactors.size() != 1) {
return TRI_ERROR_ARANGO_NO_JOURNAL;
}
MMFilesDatafile* compactor = _compactors[0];
if (datafile != compactor) {
// wrong compactor file specified... should not happen
return TRI_ERROR_INTERNAL;
}
return sealDatafile(datafile, true);
}
/// @brief replace a datafile with a compactor
int MMFilesCollection::replaceDatafileWithCompactor(MMFilesDatafile* datafile,
MMFilesDatafile* compactor) {
TRI_ASSERT(datafile != nullptr);
TRI_ASSERT(compactor != nullptr);
WRITE_LOCKER(writeLocker, _filesLock);
TRI_ASSERT(!_compactors.empty());
for (size_t i = 0; i < _datafiles.size(); ++i) {
if (_datafiles[i]->fid() == datafile->fid()) {
// found!
// now put the compactor in place of the datafile
_datafiles[i] = compactor;
// remove the compactor file from the list of compactors
TRI_ASSERT(_compactors[0] != nullptr);
TRI_ASSERT(_compactors[0]->fid() == compactor->fid());
_compactors.erase(_compactors.begin());
TRI_ASSERT(_compactors.empty());
return TRI_ERROR_NO_ERROR;
}
}
return TRI_ERROR_INTERNAL;
}
/// @brief creates a datafile
MMFilesDatafile* MMFilesCollection::createDatafile(TRI_voc_fid_t fid,
TRI_voc_size_t journalSize,
bool isCompactor) {
TRI_ASSERT(fid > 0);
// create an entry for the new datafile
try {
_datafileStatistics.create(fid);
} catch (...) {
THROW_ARANGO_EXCEPTION(TRI_ERROR_OUT_OF_MEMORY);
}
std::unique_ptr<MMFilesDatafile> datafile;
if (_logicalCollection->isVolatile()) {
// in-memory collection
datafile.reset(MMFilesDatafile::create(StaticStrings::Empty, fid, journalSize, true));
} else {
// construct a suitable filename (which may be temporary at the beginning)
std::string jname;
if (isCompactor) {
jname = "compaction-";
} else {
jname = "temp-";
}
jname.append(std::to_string(fid) + ".db");
std::string filename = arangodb::basics::FileUtils::buildFilename(_logicalCollection->path(), jname);
TRI_IF_FAILURE("CreateJournalDocumentCollection") {
// simulate disk full
THROW_ARANGO_EXCEPTION(TRI_ERROR_ARANGO_FILESYSTEM_FULL);
}
// remove an existing temporary file first
if (TRI_ExistsFile(filename.c_str())) {
// remove an existing file first
TRI_UnlinkFile(filename.c_str());
}
datafile.reset(MMFilesDatafile::create(filename, fid, journalSize, true));
}
if (datafile == nullptr) {
if (TRI_errno() == TRI_ERROR_OUT_OF_MEMORY_MMAP) {
THROW_ARANGO_EXCEPTION(TRI_ERROR_OUT_OF_MEMORY_MMAP);
}
THROW_ARANGO_EXCEPTION(TRI_ERROR_ARANGO_NO_JOURNAL);
}
// datafile is there now
TRI_ASSERT(datafile != nullptr);
if (isCompactor) {
LOG_TOPIC(TRACE, arangodb::Logger::FIXME) << "created new compactor '" << datafile->getName()
<< "'";
} else {
LOG_TOPIC(TRACE, arangodb::Logger::FIXME) << "created new journal '" << datafile->getName() << "'";
}
// create a collection header, still in the temporary file
TRI_df_marker_t* position;
int res = datafile->reserveElement(sizeof(TRI_col_header_marker_t), &position, journalSize);
TRI_IF_FAILURE("CreateJournalDocumentCollectionReserve1") {
res = TRI_ERROR_DEBUG;
}
if (res != TRI_ERROR_NO_ERROR) {
LOG_TOPIC(ERR, arangodb::Logger::FIXME) << "cannot create collection header in file '"
<< datafile->getName() << "': " << TRI_errno_string(res);
// close the journal and remove it
std::string temp(datafile->getName());
datafile.reset();
TRI_UnlinkFile(temp.c_str());
THROW_ARANGO_EXCEPTION(res);
}
TRI_col_header_marker_t cm;
MMFilesDatafileHelper::InitMarker(
reinterpret_cast<TRI_df_marker_t*>(&cm), TRI_DF_MARKER_COL_HEADER,
sizeof(TRI_col_header_marker_t), static_cast<TRI_voc_tick_t>(fid));
cm._cid = _logicalCollection->cid();
res = datafile->writeCrcElement(position, &cm.base, false);
TRI_IF_FAILURE("CreateJournalDocumentCollectionReserve2") {
res = TRI_ERROR_DEBUG;
}
if (res != TRI_ERROR_NO_ERROR) {
int res = datafile->_lastError;
LOG_TOPIC(ERR, arangodb::Logger::FIXME) << "cannot create collection header in file '"
<< datafile->getName() << "': " << TRI_last_error();
// close the datafile and remove it
std::string temp(datafile->getName());
datafile.reset();
TRI_UnlinkFile(temp.c_str());
THROW_ARANGO_EXCEPTION(res);
}
TRI_ASSERT(fid == datafile->fid());
// if a physical file, we can rename it from the temporary name to the correct
// name
if (!isCompactor && datafile->isPhysical()) {
// and use the correct name
std::string jname("journal-" + std::to_string(datafile->fid()) + ".db");
std::string filename = arangodb::basics::FileUtils::buildFilename(_logicalCollection->path(), jname);
int res = datafile->rename(filename);
if (res != TRI_ERROR_NO_ERROR) {
LOG_TOPIC(ERR, arangodb::Logger::FIXME) << "failed to rename journal '" << datafile->getName()
<< "' to '" << filename << "': " << TRI_errno_string(res);
std::string temp(datafile->getName());
datafile.reset();
TRI_UnlinkFile(temp.c_str());
THROW_ARANGO_EXCEPTION(res);
}
LOG_TOPIC(TRACE, arangodb::Logger::FIXME) << "renamed journal from '" << datafile->getName()
<< "' to '" << filename << "'";
}
return datafile.release();
}
/// @brief remove a compactor file from the list of compactors
bool MMFilesCollection::removeCompactor(MMFilesDatafile* df) {
TRI_ASSERT(df != nullptr);
WRITE_LOCKER(writeLocker, _filesLock);
for (auto it = _compactors.begin(); it != _compactors.end(); ++it) {
if ((*it) == df) {
// and finally remove the file from the _compactors vector
_compactors.erase(it);
return true;
}
}
// not found
return false;
}
/// @brief remove a datafile from the list of datafiles
bool MMFilesCollection::removeDatafile(MMFilesDatafile* df) {
TRI_ASSERT(df != nullptr);
WRITE_LOCKER(writeLocker, _filesLock);
for (auto it = _datafiles.begin(); it != _datafiles.end(); ++it) {
if ((*it) == df) {
// and finally remove the file from the _compactors vector
_datafiles.erase(it);
return true;
}
}
// not found
return false;
}
/// @brief iterates over a collection
bool MMFilesCollection::iterateDatafiles(std::function<bool(TRI_df_marker_t const*, MMFilesDatafile*)> const& cb) {
if (!iterateDatafilesVector(_datafiles, cb) ||
!iterateDatafilesVector(_compactors, cb) ||
!iterateDatafilesVector(_journals, cb)) {
return false;
}
return true;
}
/// @brief iterate over all datafiles in a vector
bool MMFilesCollection::iterateDatafilesVector(std::vector<MMFilesDatafile*> const& files,
std::function<bool(TRI_df_marker_t const*, MMFilesDatafile*)> const& cb) {
for (auto const& datafile : files) {
datafile->sequentialAccess();
datafile->willNeed();
if (!TRI_IterateDatafile(datafile, cb)) {
return false;
}
if (datafile->isPhysical() && datafile->isSealed()) {
datafile->randomAccess();
}
}
return true;
}
/// @brief closes the datafiles passed in the vector
bool MMFilesCollection::closeDatafiles(std::vector<MMFilesDatafile*> const& files) {
bool result = true;
for (auto const& datafile : files) {
TRI_ASSERT(datafile != nullptr);
if (datafile->state() == TRI_DF_STATE_CLOSED) {
continue;
}
int res = datafile->close();
if (res != TRI_ERROR_NO_ERROR) {
result = false;
}
}
return result;
}
void MMFilesCollection::figures(std::shared_ptr<arangodb::velocypack::Builder>& builder) {
builder->add("documentReferences", VPackValue(_ditches.numDocumentDitches()));
char const* waitingForDitch = _ditches.head();
builder->add("waitingFor", VPackValue(waitingForDitch == nullptr ? "-" : waitingForDitch));
// add datafile statistics
DatafileStatisticsContainer dfi = _datafileStatistics.all();
builder->add("alive", VPackValue(VPackValueType::Object));
builder->add("count", VPackValue(dfi.numberAlive));
builder->add("size", VPackValue(dfi.sizeAlive));
builder->close(); // alive
builder->add("dead", VPackValue(VPackValueType::Object));
builder->add("count", VPackValue(dfi.numberDead));
builder->add("size", VPackValue(dfi.sizeDead));
builder->add("deletion", VPackValue(dfi.numberDeletions));
builder->close(); // dead
// add file statistics
READ_LOCKER(readLocker, _filesLock);
size_t sizeDatafiles = 0;
builder->add("datafiles", VPackValue(VPackValueType::Object));
for (auto const& it : _datafiles) {
sizeDatafiles += it->initSize();
}
builder->add("count", VPackValue(_datafiles.size()));
builder->add("fileSize", VPackValue(sizeDatafiles));
builder->close(); // datafiles
size_t sizeJournals = 0;
for (auto const& it : _journals) {
sizeJournals += it->initSize();
}
builder->add("journals", VPackValue(VPackValueType::Object));
builder->add("count", VPackValue(_journals.size()));
builder->add("fileSize", VPackValue(sizeJournals));
builder->close(); // journals
size_t sizeCompactors = 0;
for (auto const& it : _compactors) {
sizeCompactors += it->initSize();
}
builder->add("compactors", VPackValue(VPackValueType::Object));
builder->add("count", VPackValue(_compactors.size()));
builder->add("fileSize", VPackValue(sizeCompactors));
builder->close(); // compactors
builder->add("revisions", VPackValue(VPackValueType::Object));
builder->add("count", VPackValue(_revisionsCache.size()));
builder->add("size", VPackValue(_revisionsCache.memoryUsage()));
builder->close(); // revisions
}
/// @brief iterate over a vector of datafiles and pick those with a specific
/// data range
std::vector<MMFilesCollection::DatafileDescription> MMFilesCollection::datafilesInRange(TRI_voc_tick_t dataMin, TRI_voc_tick_t dataMax) {
std::vector<DatafileDescription> result;
auto apply = [&dataMin, &dataMax, &result](MMFilesDatafile const* datafile, bool isJournal) {
DatafileDescription entry = {datafile, datafile->_dataMin, datafile->_dataMax, datafile->_tickMax, isJournal};
LOG_TOPIC(TRACE, arangodb::Logger::FIXME) << "checking datafile " << datafile->fid() << " with data range " << datafile->_dataMin << " - " << datafile->_dataMax << ", tick max: " << datafile->_tickMax;
if (datafile->_dataMin == 0 || datafile->_dataMax == 0) {
// datafile doesn't have any data
return;
}
TRI_ASSERT(datafile->_tickMin <= datafile->_tickMax);
TRI_ASSERT(datafile->_dataMin <= datafile->_dataMax);
if (dataMax < datafile->_dataMin) {
// datafile is newer than requested range
return;
}
if (dataMin > datafile->_dataMax) {
// datafile is older than requested range
return;
}
result.emplace_back(entry);
};
READ_LOCKER(readLocker, _filesLock);
for (auto& it : _datafiles) {
apply(it, false);
}
for (auto& it : _journals) {
apply(it, true);
}
return result;
}
bool MMFilesCollection::applyForTickRange(TRI_voc_tick_t dataMin, TRI_voc_tick_t dataMax,
std::function<bool(TRI_voc_tick_t foundTick, TRI_df_marker_t const* marker)> const& callback) {
LOG_TOPIC(TRACE, arangodb::Logger::FIXME) << "getting datafiles in data range " << dataMin << " - " << dataMax;
std::vector<DatafileDescription> datafiles = datafilesInRange(dataMin, dataMax);
// now we have a list of datafiles...
size_t const n = datafiles.size();
for (size_t i = 0; i < n; ++i) {
auto const& e = datafiles[i];
MMFilesDatafile const* datafile = e._data;
// we are reading from a journal that might be modified in parallel
// so we must read-lock it
CONDITIONAL_READ_LOCKER(readLocker, _filesLock, e._isJournal);
if (!e._isJournal) {
TRI_ASSERT(datafile->isSealed());
}
char const* ptr = datafile->_data;
char const* end = ptr + datafile->currentSize();
while (ptr < end) {
auto const* marker = reinterpret_cast<TRI_df_marker_t const*>(ptr);
if (marker->getSize() == 0) {
// end of datafile
break;
}
TRI_df_marker_type_t type = marker->getType();
if (type <= TRI_DF_MARKER_MIN) {
break;
}
ptr += MMFilesDatafileHelper::AlignedMarkerSize<size_t>(marker);
if (type == TRI_DF_MARKER_BLANK) {
// fully ignore these marker types. they don't need to be replicated,
// but we also cannot stop iteration if we find one of these
continue;
}
// get the marker's tick and check whether we should include it
TRI_voc_tick_t foundTick = marker->getTick();
if (foundTick <= dataMin) {
// marker too old
continue;
}
if (foundTick > dataMax) {
// marker too new
return false; // hasMore = false
}
if (type != TRI_DF_MARKER_VPACK_DOCUMENT &&
type != TRI_DF_MARKER_VPACK_REMOVE) {
// found a non-data marker...
// check if we can abort searching
if (foundTick >= dataMax || (foundTick > e._tickMax && i == (n - 1))) {
// fetched the last available marker
return false; // hasMore = false
}
continue;
}
// note the last tick we processed
bool doAbort = false;
if (!callback(foundTick, marker)) {
doAbort = true;
}
if (foundTick >= dataMax || (foundTick >= e._tickMax && i == (n - 1))) {
// fetched the last available marker
return false; // hasMore = false
}
if (doAbort) {
return true; // hasMore = true
}
} // next marker in datafile
} // next datafile
return false; // hasMore = false
}
/// @brief report extra memory used by indexes etc.
size_t MMFilesCollection::memory() const {
return 0; // TODO
}
/// @brief disallow compaction of the collection
void MMFilesCollection::preventCompaction() {
_compactionLock.readLock();
}
/// @brief try disallowing compaction of the collection
bool MMFilesCollection::tryPreventCompaction() {
return _compactionLock.tryReadLock();
}
/// @brief re-allow compaction of the collection
void MMFilesCollection::allowCompaction() {
_compactionLock.unlock();
}
/// @brief exclusively lock the collection for compaction
void MMFilesCollection::lockForCompaction() {
_compactionLock.writeLock();
}
/// @brief try to exclusively lock the collection for compaction
bool MMFilesCollection::tryLockForCompaction() {
return _compactionLock.tryWriteLock();
}
/// @brief signal that compaction is finished
void MMFilesCollection::finishCompaction() {
_compactionLock.unlock();
}
/// @brief iterate all markers of the collection
int MMFilesCollection::iterateMarkersOnLoad(transaction::Methods* trx) {
// initialize state for iteration
OpenIteratorState openState(_logicalCollection, trx);
if (_initialCount != -1) {
_revisionsCache.sizeHint(_initialCount);
_logicalCollection->sizeHint(trx, _initialCount);
openState._initialCount = _initialCount;
}
// read all documents and fill primary index
auto cb = [&openState](TRI_df_marker_t const* marker, MMFilesDatafile* datafile) -> bool {
return OpenIterator(marker, &openState, datafile);
};
iterateDatafiles(cb);
LOG_TOPIC(TRACE, arangodb::Logger::FIXME) << "found " << openState._documents << " document markers, "
<< openState._deletions << " deletion markers for collection '" << _logicalCollection->name() << "'";
if (_logicalCollection->version() <= LogicalCollection::VERSION_30 &&
_lastRevision >= static_cast<TRI_voc_rid_t>(2016ULL - 1970ULL) * 1000ULL * 60ULL * 60ULL * 24ULL * 365ULL &&
application_features::ApplicationServer::server->getFeature<DatabaseFeature>("Database")->check30Revisions()) {
// a collection from 3.0 or earlier with a _rev value that is higher than we can handle safely
_logicalCollection->setRevisionError();
LOG_TOPIC(WARN, arangodb::Logger::FIXME) << "collection '" << _logicalCollection->name() << "' contains _rev values that are higher than expected for an ArangoDB 3.1 database. If this collection was created or used with a pre-release or development version of ArangoDB 3.1, please restart the server with option '--database.check-30-revisions false' to suppress this warning. If this collection was created with an ArangoDB 3.0, please dump the 3.0 database with arangodump and restore it in 3.1 with arangorestore.";
if (application_features::ApplicationServer::server->getFeature<DatabaseFeature>("Database")->fail30Revisions()) {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_ARANGO_CORRUPTED_DATAFILE, std::string("collection '") + _logicalCollection->name() + "' contains _rev values from 3.0 and needs to be migrated using dump/restore");
}
}
// update the real statistics for the collection
try {
for (auto& it : openState._stats) {
createStats(it.first, *(it.second));
}
} catch (basics::Exception const& ex) {
return ex.code();
} catch (...) {
return TRI_ERROR_INTERNAL;
}
return TRI_ERROR_NO_ERROR;
}
int MMFilesCollection::read(transaction::Methods* trx, VPackSlice const key,
ManagedDocumentResult& result, bool lock) {
TRI_IF_FAILURE("ReadDocumentNoLock") {
// test what happens if no lock can be acquired
return TRI_ERROR_DEBUG;
}
TRI_IF_FAILURE("ReadDocumentNoLockExcept") {
THROW_ARANGO_EXCEPTION(TRI_ERROR_DEBUG);
}
bool const useDeadlockDetector =
(lock && !trx->isSingleOperationTransaction());
CollectionReadLocker collectionLocker(_logicalCollection, useDeadlockDetector,
lock);
int res = lookupDocument(trx, key, result);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
// we found a document
return TRI_ERROR_NO_ERROR;
}
int MMFilesCollection::insert(transaction::Methods* trx,
VPackSlice const newSlice,
ManagedDocumentResult& result,
OperationOptions& options,
TRI_voc_tick_t& resultMarkerTick, bool lock) {
// create marker
MMFilesCrudMarker insertMarker(
TRI_DF_MARKER_VPACK_DOCUMENT,
static_cast<MMFilesTransactionState*>(trx->state())->idForMarker(), newSlice);
MMFilesWalMarker const* marker;
if (options.recoveryMarker == nullptr) {
marker = &insertMarker;
} else {
marker = options.recoveryMarker;
}
// now insert into indexes
TRI_IF_FAILURE("InsertDocumentNoLock") {
// test what happens if no lock can be acquired
return TRI_ERROR_DEBUG;
}
// TODO Do we need a LogicalCollection here?
MMFilesDocumentOperation operation(_logicalCollection,
TRI_VOC_DOCUMENT_OPERATION_INSERT);
TRI_IF_FAILURE("InsertDocumentNoHeader") {
// test what happens if no header can be acquired
return TRI_ERROR_DEBUG;
}
TRI_IF_FAILURE("InsertDocumentNoHeaderExcept") {
// test what happens if no header can be acquired
THROW_ARANGO_EXCEPTION(TRI_ERROR_DEBUG);
}
TRI_voc_rid_t revisionId = transaction::Methods::extractRevFromDocument(newSlice);
VPackSlice doc(marker->vpack());
operation.setRevisions(DocumentDescriptor(),
DocumentDescriptor(revisionId, doc.begin()));
try {
insertRevision(revisionId, marker->vpack(), 0, true, true);
// and go on with the insertion...
} catch (basics::Exception const& ex) {
return ex.code();
} catch (std::bad_alloc const&) {
return TRI_ERROR_OUT_OF_MEMORY;
} catch (...) {
return TRI_ERROR_INTERNAL;
}
int res = TRI_ERROR_NO_ERROR;
{
// use lock?
bool const useDeadlockDetector =
(lock && !trx->isSingleOperationTransaction());
try {
// TODO Do we use the CollectionLocker on LogicalCollections
// or do we use it on the SE specific one?
arangodb::CollectionWriteLocker collectionLocker(
_logicalCollection, useDeadlockDetector, lock);
try {
// insert into indexes
res = insertDocument(trx, revisionId, doc, operation, marker,
options.waitForSync);
} catch (basics::Exception const& ex) {
res = ex.code();
} catch (std::bad_alloc const&) {
res = TRI_ERROR_OUT_OF_MEMORY;
} catch (...) {
res = TRI_ERROR_INTERNAL;
}
} catch (...) {
// the collectionLocker may have thrown in its constructor...
// if it did, then we need to manually remove the revision id
// from the list of revisions
try {
removeRevision(revisionId, false);
} catch (...) {
}
throw;
}
if (res != TRI_ERROR_NO_ERROR) {
operation.revert(trx);
}
}
if (res == TRI_ERROR_NO_ERROR) {
uint8_t const* vpack = lookupRevisionVPack(revisionId);
if (vpack != nullptr) {
result.addExisting(vpack, revisionId);
}
// store the tick that was used for writing the document
resultMarkerTick = operation.tick();
}
return res;
}
bool MMFilesCollection::isFullyCollected() const {
int64_t uncollected = _uncollectedLogfileEntries.load();
return (uncollected == 0);
}
MMFilesDocumentPosition MMFilesCollection::lookupRevision(TRI_voc_rid_t revisionId) const {
TRI_ASSERT(revisionId != 0);
MMFilesDocumentPosition const old = _revisionsCache.lookup(revisionId);
if (old) {
return old;
}
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INTERNAL, "got invalid revision value on lookup");
}
uint8_t const* MMFilesCollection::lookupRevisionVPack(TRI_voc_rid_t revisionId) const {
TRI_ASSERT(revisionId != 0);
MMFilesDocumentPosition const old = _revisionsCache.lookup(revisionId);
if (old) {
uint8_t const* vpack = static_cast<uint8_t const*>(old.dataptr());
TRI_ASSERT(VPackSlice(vpack).isObject());
return vpack;
}
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INTERNAL, "got invalid vpack value on lookup");
}
uint8_t const* MMFilesCollection::lookupRevisionVPackConditional(TRI_voc_rid_t revisionId, TRI_voc_tick_t maxTick, bool excludeWal) const {
TRI_ASSERT(revisionId != 0);
MMFilesDocumentPosition const old = _revisionsCache.lookup(revisionId);
if (!old) {
return nullptr;
}
if (excludeWal && old.pointsToWal()) {
return nullptr;
}
uint8_t const* vpack = static_cast<uint8_t const*>(old.dataptr());
if (maxTick > 0) {
TRI_df_marker_t const* marker = reinterpret_cast<TRI_df_marker_t const*>(vpack - MMFilesDatafileHelper::VPackOffset(TRI_DF_MARKER_VPACK_DOCUMENT));
if (marker->getTick() > maxTick) {
return nullptr;
}
}
return vpack;
}
void MMFilesCollection::insertRevision(TRI_voc_rid_t revisionId, uint8_t const* dataptr, TRI_voc_fid_t fid, bool isInWal, bool shouldLock) {
TRI_ASSERT(revisionId != 0);
TRI_ASSERT(dataptr != nullptr);
_revisionsCache.insert(revisionId, dataptr, fid, isInWal, shouldLock);
}
void MMFilesCollection::updateRevision(TRI_voc_rid_t revisionId, uint8_t const* dataptr, TRI_voc_fid_t fid, bool isInWal) {
TRI_ASSERT(revisionId != 0);
TRI_ASSERT(dataptr != nullptr);
_revisionsCache.update(revisionId, dataptr, fid, isInWal);
}
bool MMFilesCollection::updateRevisionConditional(TRI_voc_rid_t revisionId, TRI_df_marker_t const* oldPosition, TRI_df_marker_t const* newPosition, TRI_voc_fid_t newFid, bool isInWal) {
TRI_ASSERT(revisionId != 0);
TRI_ASSERT(newPosition != nullptr);
return _revisionsCache.updateConditional(revisionId, oldPosition, newPosition, newFid, isInWal);
}
void MMFilesCollection::removeRevision(TRI_voc_rid_t revisionId, bool updateStats) {
TRI_ASSERT(revisionId != 0);
if (updateStats) {
MMFilesDocumentPosition const old = _revisionsCache.fetchAndRemove(revisionId);
if (old && !old.pointsToWal() && old.fid() != 0) {
TRI_ASSERT(old.dataptr() != nullptr);
uint8_t const* vpack = static_cast<uint8_t const*>(old.dataptr());
int64_t size = encoding::alignedSize<int64_t>(MMFilesDatafileHelper::VPackOffset(TRI_DF_MARKER_VPACK_DOCUMENT) + VPackSlice(vpack).byteSize());
_datafileStatistics.increaseDead(old.fid(), 1, size);
}
} else {
_revisionsCache.remove(revisionId);
}
}
/// @brief creates a new entry in the primary index
int MMFilesCollection::insertPrimaryIndex(transaction::Methods* trx,
TRI_voc_rid_t revisionId,
VPackSlice const& doc) {
TRI_IF_FAILURE("InsertPrimaryIndex") { return TRI_ERROR_DEBUG; }
// insert into primary index
return _logicalCollection->primaryIndex()->insertKey(trx, revisionId, doc);
}
/// @brief deletes an entry from the primary index
int MMFilesCollection::deletePrimaryIndex(arangodb::transaction::Methods* trx,
TRI_voc_rid_t revisionId,
VPackSlice const& doc) {
TRI_IF_FAILURE("DeletePrimaryIndex") { return TRI_ERROR_DEBUG; }
return _logicalCollection->primaryIndex()->removeKey(trx, revisionId, doc);
}
/// @brief creates a new entry in the secondary indexes
int MMFilesCollection::insertSecondaryIndexes(arangodb::transaction::Methods* trx,
TRI_voc_rid_t revisionId,
VPackSlice const& doc,
bool isRollback) {
// Coordintor doesn't know index internals
TRI_ASSERT(!ServerState::instance()->isCoordinator());
TRI_IF_FAILURE("InsertSecondaryIndexes") { return TRI_ERROR_DEBUG; }
bool const useSecondary = _logicalCollection->useSecondaryIndexes();
if (!useSecondary && _logicalCollection->_persistentIndexes == 0) {
return TRI_ERROR_NO_ERROR;
}
int result = TRI_ERROR_NO_ERROR;
// TODO FIXME
auto indexes = _logicalCollection->getIndexes();
size_t const n = indexes.size();
for (size_t i = 1; i < n; ++i) {
auto idx = indexes[i];
TRI_ASSERT(idx->type() != Index::IndexType::TRI_IDX_TYPE_PRIMARY_INDEX);
if (!useSecondary && !idx->isPersistent()) {
continue;
}
int res = idx->insert(trx, revisionId, doc, isRollback);
// in case of no-memory, return immediately
if (res == TRI_ERROR_OUT_OF_MEMORY) {
return res;
}
if (res != TRI_ERROR_NO_ERROR) {
if (res == TRI_ERROR_ARANGO_UNIQUE_CONSTRAINT_VIOLATED ||
result == TRI_ERROR_NO_ERROR) {
// "prefer" unique constraint violated
result = res;
}
}
}
return result;
}
/// @brief deletes an entry from the secondary indexes
int MMFilesCollection::deleteSecondaryIndexes(arangodb::transaction::Methods* trx,
TRI_voc_rid_t revisionId,
VPackSlice const& doc,
bool isRollback) {
// Coordintor doesn't know index internals
TRI_ASSERT(!ServerState::instance()->isCoordinator());
bool const useSecondary = _logicalCollection->useSecondaryIndexes();
if (!useSecondary && _logicalCollection->_persistentIndexes == 0) {
return TRI_ERROR_NO_ERROR;
}
TRI_IF_FAILURE("DeleteSecondaryIndexes") { return TRI_ERROR_DEBUG; }
int result = TRI_ERROR_NO_ERROR;
// TODO FIXME
auto indexes = _logicalCollection->getIndexes();
size_t const n = indexes.size();
for (size_t i = 1; i < n; ++i) {
auto idx = indexes[i];
TRI_ASSERT(idx->type() != Index::IndexType::TRI_IDX_TYPE_PRIMARY_INDEX);
if (!useSecondary && !idx->isPersistent()) {
continue;
}
int res = idx->remove(trx, revisionId, doc, isRollback);
if (res != TRI_ERROR_NO_ERROR) {
// an error occurred
result = res;
}
}
return result;
}
/// @brief insert a document into all indexes known to
/// this collection.
/// This function guarantees all or nothing,
/// If it returns NO_ERROR all indexes are filled.
/// If it returns an error no documents are inserted
int MMFilesCollection::insertIndexes(arangodb::transaction::Methods* trx,
TRI_voc_rid_t revisionId,
VPackSlice const& doc) {
// insert into primary index first
int res = insertPrimaryIndex(trx, revisionId, doc);
if (res != TRI_ERROR_NO_ERROR) {
// insert has failed
return res;
}
// insert into secondary indexes
res = insertSecondaryIndexes(trx, revisionId, doc, false);
if (res != TRI_ERROR_NO_ERROR) {
deleteSecondaryIndexes(trx, revisionId, doc, true);
deletePrimaryIndex(trx, revisionId, doc);
}
return res;
}
/// @brief insert a document, low level worker
/// the caller must make sure the write lock on the collection is held
int MMFilesCollection::insertDocument(arangodb::transaction::Methods* trx,
TRI_voc_rid_t revisionId,
VPackSlice const& doc,
MMFilesDocumentOperation& operation,
MMFilesWalMarker const* marker,
bool& waitForSync) {
int res = insertIndexes(trx, revisionId, doc);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
operation.indexed();
TRI_IF_FAILURE("InsertDocumentNoOperation") { return TRI_ERROR_DEBUG; }
TRI_IF_FAILURE("InsertDocumentNoOperationExcept") {
THROW_ARANGO_EXCEPTION(TRI_ERROR_DEBUG);
}
return static_cast<MMFilesTransactionState*>(trx->state())->addOperation(revisionId, operation, marker, waitForSync);
}
int MMFilesCollection::update(arangodb::transaction::Methods* trx,
VPackSlice const newSlice,
ManagedDocumentResult& result,
OperationOptions& options,
TRI_voc_tick_t& resultMarkerTick, bool lock,
TRI_voc_rid_t& prevRev,
ManagedDocumentResult& previous,
TRI_voc_rid_t const& revisionId,
VPackSlice const key) {
bool const isEdgeCollection =
(_logicalCollection->type() == TRI_COL_TYPE_EDGE);
TRI_IF_FAILURE("UpdateDocumentNoLock") { return TRI_ERROR_DEBUG; }
bool const useDeadlockDetector =
(lock && !trx->isSingleOperationTransaction());
arangodb::CollectionWriteLocker collectionLocker(_logicalCollection,
useDeadlockDetector, lock);
// get the previous revision
int res = lookupDocument(trx, key, previous);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
uint8_t const* vpack = previous.vpack();
VPackSlice oldDoc(vpack);
TRI_voc_rid_t oldRevisionId =
transaction::Methods::extractRevFromDocument(oldDoc);
prevRev = oldRevisionId;
TRI_IF_FAILURE("UpdateDocumentNoMarker") {
// test what happens when no marker can be created
return TRI_ERROR_DEBUG;
}
TRI_IF_FAILURE("UpdateDocumentNoMarkerExcept") {
// test what happens when no marker can be created
THROW_ARANGO_EXCEPTION(TRI_ERROR_DEBUG);
}
// Check old revision:
if (!options.ignoreRevs) {
TRI_voc_rid_t expectedRev = 0;
if (newSlice.isObject()) {
expectedRev = TRI_ExtractRevisionId(newSlice);
}
int res = _logicalCollection->checkRevision(trx, expectedRev, prevRev);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
}
if (newSlice.length() <= 1) {
// no need to do anything
result = previous;
return TRI_ERROR_NO_ERROR;
}
// merge old and new values
transaction::BuilderLeaser builder(trx);
if (options.recoveryMarker == nullptr) {
mergeObjectsForUpdate(trx, oldDoc, newSlice, isEdgeCollection,
TRI_RidToString(revisionId), options.mergeObjects,
options.keepNull, *builder.get());
if (ServerState::isDBServer(trx->serverRole())) {
// Need to check that no sharding keys have changed:
if (arangodb::shardKeysChanged(_logicalCollection->dbName(),
trx->resolver()->getCollectionNameCluster(
_logicalCollection->planId()),
oldDoc, builder->slice(), false)) {
return TRI_ERROR_CLUSTER_MUST_NOT_CHANGE_SHARDING_ATTRIBUTES;
}
}
}
// create marker
MMFilesCrudMarker updateMarker(
TRI_DF_MARKER_VPACK_DOCUMENT,
static_cast<MMFilesTransactionState*>(trx->state())->idForMarker(), builder->slice());
MMFilesWalMarker const* marker;
if (options.recoveryMarker == nullptr) {
marker = &updateMarker;
} else {
marker = options.recoveryMarker;
}
VPackSlice const newDoc(marker->vpack());
MMFilesDocumentOperation operation(_logicalCollection,
TRI_VOC_DOCUMENT_OPERATION_UPDATE);
try {
insertRevision(revisionId, marker->vpack(), 0, true, true);
operation.setRevisions(DocumentDescriptor(oldRevisionId, oldDoc.begin()),
DocumentDescriptor(revisionId, newDoc.begin()));
if (oldRevisionId == revisionId) {
// update with same revision id => can happen if isRestore = true
result.clear();
}
res = _logicalCollection->updateDocument(trx, oldRevisionId, oldDoc,
revisionId, newDoc, operation,
marker, options.waitForSync);
} catch (basics::Exception const& ex) {
res = ex.code();
} catch (std::bad_alloc const&) {
res = TRI_ERROR_OUT_OF_MEMORY;
} catch (...) {
res = TRI_ERROR_INTERNAL;
}
if (res != TRI_ERROR_NO_ERROR) {
operation.revert(trx);
} else {
_logicalCollection->readRevision(trx, result, revisionId);
if (options.waitForSync) {
// store the tick that was used for writing the new document
resultMarkerTick = operation.tick();
}
}
return res;
}
int MMFilesCollection::replace(
transaction::Methods* trx, VPackSlice const newSlice,
ManagedDocumentResult& result, OperationOptions& options,
TRI_voc_tick_t& resultMarkerTick, bool lock, TRI_voc_rid_t& prevRev,
ManagedDocumentResult& previous, TRI_voc_rid_t const revisionId,
VPackSlice const fromSlice, VPackSlice const toSlice) {
bool const isEdgeCollection = (_logicalCollection->type() == TRI_COL_TYPE_EDGE);
TRI_IF_FAILURE("ReplaceDocumentNoLock") { return TRI_ERROR_DEBUG; }
// get the previous revision
VPackSlice key = newSlice.get(StaticStrings::KeyString);
if (key.isNone()) {
return TRI_ERROR_ARANGO_DOCUMENT_HANDLE_BAD;
}
bool const useDeadlockDetector =
(lock && !trx->isSingleOperationTransaction());
arangodb::CollectionWriteLocker collectionLocker(_logicalCollection, useDeadlockDetector,
lock);
// get the previous revision
int res = lookupDocument(trx, key, previous);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
TRI_IF_FAILURE("ReplaceDocumentNoMarker") {
// test what happens when no marker can be created
return TRI_ERROR_DEBUG;
}
TRI_IF_FAILURE("ReplaceDocumentNoMarkerExcept") {
// test what happens when no marker can be created
THROW_ARANGO_EXCEPTION(TRI_ERROR_DEBUG);
}
uint8_t const* vpack = previous.vpack();
VPackSlice oldDoc(vpack);
TRI_voc_rid_t oldRevisionId = transaction::Methods::extractRevFromDocument(oldDoc);
prevRev = oldRevisionId;
// Check old revision:
if (!options.ignoreRevs) {
TRI_voc_rid_t expectedRev = 0;
if (newSlice.isObject()) {
expectedRev = TRI_ExtractRevisionId(newSlice);
}
int res = _logicalCollection->checkRevision(trx, expectedRev, prevRev);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
}
// merge old and new values
transaction::BuilderLeaser builder(trx);
newObjectForReplace(trx, oldDoc, newSlice, fromSlice, toSlice,
isEdgeCollection, TRI_RidToString(revisionId),
*builder.get());
if (ServerState::isDBServer(trx->serverRole())) {
// Need to check that no sharding keys have changed:
if (arangodb::shardKeysChanged(_logicalCollection->dbName(),
trx->resolver()->getCollectionNameCluster(
_logicalCollection->planId()),
oldDoc, builder->slice(), false)) {
return TRI_ERROR_CLUSTER_MUST_NOT_CHANGE_SHARDING_ATTRIBUTES;
}
}
// create marker
MMFilesCrudMarker replaceMarker(
TRI_DF_MARKER_VPACK_DOCUMENT,
static_cast<MMFilesTransactionState*>(trx->state())->idForMarker(), builder->slice());
MMFilesWalMarker const* marker;
if (options.recoveryMarker == nullptr) {
marker = &replaceMarker;
} else {
marker = options.recoveryMarker;
}
VPackSlice const newDoc(marker->vpack());
MMFilesDocumentOperation operation(_logicalCollection, TRI_VOC_DOCUMENT_OPERATION_REPLACE);
try {
insertRevision(revisionId, marker->vpack(), 0, true, true);
operation.setRevisions(DocumentDescriptor(oldRevisionId, oldDoc.begin()),
DocumentDescriptor(revisionId, newDoc.begin()));
if (oldRevisionId == revisionId) {
// update with same revision id => can happen if isRestore = true
result.clear();
}
res = _logicalCollection->updateDocument(trx, oldRevisionId, oldDoc,
revisionId, newDoc, operation,
marker, options.waitForSync);
} catch (basics::Exception const& ex) {
res = ex.code();
} catch (std::bad_alloc const&) {
res = TRI_ERROR_OUT_OF_MEMORY;
} catch (...) {
res = TRI_ERROR_INTERNAL;
}
if (res != TRI_ERROR_NO_ERROR) {
operation.revert(trx);
} else {
if (oldRevisionId == revisionId) {
// update with same revision id => can happen if isRestore = true
result.clear();
}
_logicalCollection->readRevision(trx, result, revisionId);
if (options.waitForSync) {
// store the tick that was used for writing the new document
resultMarkerTick = operation.tick();
}
}
return res;
}
int MMFilesCollection::remove(arangodb::transaction::Methods* trx, VPackSlice const slice,
ManagedDocumentResult& previous,
OperationOptions& options,
TRI_voc_tick_t& resultMarkerTick, bool lock,
TRI_voc_rid_t const& revisionId,
TRI_voc_rid_t& prevRev,
VPackSlice const toRemove) {
prevRev = 0;
TRI_IF_FAILURE("RemoveDocumentNoMarker") {
// test what happens when no marker can be created
return TRI_ERROR_DEBUG;
}
TRI_IF_FAILURE("RemoveDocumentNoMarkerExcept") {
// test what happens if no marker can be created
THROW_ARANGO_EXCEPTION(TRI_ERROR_DEBUG);
}
// create marker
MMFilesCrudMarker removeMarker(
TRI_DF_MARKER_VPACK_REMOVE,
static_cast<MMFilesTransactionState*>(trx->state())->idForMarker(),
toRemove);
MMFilesWalMarker const* marker;
if (options.recoveryMarker == nullptr) {
marker = &removeMarker;
} else {
marker = options.recoveryMarker;
}
TRI_IF_FAILURE("RemoveDocumentNoLock") {
// test what happens if no lock can be acquired
return TRI_ERROR_DEBUG;
}
VPackSlice key;
if (slice.isString()) {
key = slice;
} else {
key = slice.get(StaticStrings::KeyString);
}
TRI_ASSERT(!key.isNone());
MMFilesDocumentOperation operation(_logicalCollection,
TRI_VOC_DOCUMENT_OPERATION_REMOVE);
bool const useDeadlockDetector =
(lock && !trx->isSingleOperationTransaction());
arangodb::CollectionWriteLocker collectionLocker(_logicalCollection,
useDeadlockDetector, lock);
// get the previous revision
int res = lookupDocument(trx, key, previous);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
uint8_t const* vpack = previous.vpack();
VPackSlice oldDoc(vpack);
TRI_voc_rid_t oldRevisionId = arangodb::transaction::Methods::extractRevFromDocument(oldDoc);
prevRev = oldRevisionId;
// Check old revision:
if (!options.ignoreRevs && slice.isObject()) {
TRI_voc_rid_t expectedRevisionId = TRI_ExtractRevisionId(slice);
int res = _logicalCollection->checkRevision(trx, expectedRevisionId,
oldRevisionId);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
}
// we found a document to remove
try {
operation.setRevisions(DocumentDescriptor(oldRevisionId, oldDoc.begin()),
DocumentDescriptor());
// delete from indexes
res = deleteSecondaryIndexes(trx, oldRevisionId, oldDoc, false);
if (res != TRI_ERROR_NO_ERROR) {
insertSecondaryIndexes(trx, oldRevisionId, oldDoc, true);
THROW_ARANGO_EXCEPTION(res);
}
res = deletePrimaryIndex(trx, oldRevisionId, oldDoc);
if (res != TRI_ERROR_NO_ERROR) {
insertSecondaryIndexes(trx, oldRevisionId, oldDoc, true);
THROW_ARANGO_EXCEPTION(res);
}
operation.indexed();
TRI_IF_FAILURE("RemoveDocumentNoOperation") {
THROW_ARANGO_EXCEPTION(TRI_ERROR_DEBUG);
}
try {
removeRevision(oldRevisionId, true);
} catch (...) {
}
TRI_IF_FAILURE("RemoveDocumentNoOperationExcept") {
THROW_ARANGO_EXCEPTION(TRI_ERROR_DEBUG);
}
res =
static_cast<MMFilesTransactionState*>(trx->state())
->addOperation(revisionId, operation, marker, options.waitForSync);
} catch (basics::Exception const& ex) {
res = ex.code();
} catch (std::bad_alloc const&) {
res = TRI_ERROR_OUT_OF_MEMORY;
} catch (...) {
res = TRI_ERROR_INTERNAL;
}
if (res != TRI_ERROR_NO_ERROR) {
operation.revert(trx);
} else {
// store the tick that was used for removing the document
resultMarkerTick = operation.tick();
}
return res;
}
/// @brief removes a document or edge, fast path function for database documents
int MMFilesCollection::removeFastPath(arangodb::transaction::Methods* trx,
TRI_voc_rid_t oldRevisionId,
VPackSlice const oldDoc,
OperationOptions& options,
TRI_voc_tick_t& resultMarkerTick,
bool lock,
TRI_voc_rid_t const& revisionId,
VPackSlice const toRemove) {
TRI_IF_FAILURE("RemoveDocumentNoMarker") {
// test what happens when no marker can be created
return TRI_ERROR_DEBUG;
}
TRI_IF_FAILURE("RemoveDocumentNoMarkerExcept") {
// test what happens if no marker can be created
THROW_ARANGO_EXCEPTION(TRI_ERROR_DEBUG);
}
// create marker
MMFilesCrudMarker removeMarker(
TRI_DF_MARKER_VPACK_REMOVE,
static_cast<MMFilesTransactionState*>(trx->state())->idForMarker(),
toRemove);
MMFilesWalMarker const* marker = &removeMarker;
TRI_IF_FAILURE("RemoveDocumentNoLock") {
// test what happens if no lock can be acquired
return TRI_ERROR_DEBUG;
}
VPackSlice key = arangodb::transaction::Methods::extractKeyFromDocument(oldDoc);
TRI_ASSERT(!key.isNone());
MMFilesDocumentOperation operation(_logicalCollection,
TRI_VOC_DOCUMENT_OPERATION_REMOVE);
bool const useDeadlockDetector =
(lock && !trx->isSingleOperationTransaction());
arangodb::CollectionWriteLocker collectionLocker(_logicalCollection,
useDeadlockDetector, lock);
operation.setRevisions(DocumentDescriptor(oldRevisionId, oldDoc.begin()),
DocumentDescriptor());
// delete from indexes
int res;
try {
res = deleteSecondaryIndexes(trx, oldRevisionId, oldDoc, false);
if (res != TRI_ERROR_NO_ERROR) {
insertSecondaryIndexes(trx, oldRevisionId, oldDoc, true);
THROW_ARANGO_EXCEPTION(res);
}
res = deletePrimaryIndex(trx, oldRevisionId, oldDoc);
if (res != TRI_ERROR_NO_ERROR) {
insertSecondaryIndexes(trx, oldRevisionId, oldDoc, true);
THROW_ARANGO_EXCEPTION(res);
}
operation.indexed();
try {
removeRevision(oldRevisionId, true);
} catch (...) {
}
TRI_IF_FAILURE("RemoveDocumentNoOperation") {
THROW_ARANGO_EXCEPTION(TRI_ERROR_DEBUG);
}
TRI_IF_FAILURE("RemoveDocumentNoOperationExcept") {
THROW_ARANGO_EXCEPTION(TRI_ERROR_DEBUG);
}
res =
static_cast<MMFilesTransactionState*>(trx->state())
->addOperation(revisionId, operation, marker, options.waitForSync);
} catch (basics::Exception const& ex) {
res = ex.code();
} catch (std::bad_alloc const&) {
res = TRI_ERROR_OUT_OF_MEMORY;
} catch (...) {
res = TRI_ERROR_INTERNAL;
}
if (res != TRI_ERROR_NO_ERROR) {
operation.revert(trx);
} else {
// store the tick that was used for removing the document
resultMarkerTick = operation.tick();
}
return res;
}
/// @brief looks up a document by key, low level worker
/// the caller must make sure the read lock on the collection is held
/// the key must be a string slice, no revision check is performed
int MMFilesCollection::lookupDocument(transaction::Methods* trx,
VPackSlice const key,
ManagedDocumentResult& result) {
if (!key.isString()) {
return TRI_ERROR_ARANGO_DOCUMENT_KEY_BAD;
}
MMFilesSimpleIndexElement element =
_logicalCollection->primaryIndex()->lookupKey(trx, key, result);
if (element) {
_logicalCollection->readRevision(trx, result, element.revisionId());
return TRI_ERROR_NO_ERROR;
}
return TRI_ERROR_ARANGO_DOCUMENT_NOT_FOUND;
}
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