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arangodb/arangod/VocBase/LogicalCollection.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 Michael Hackstein
////////////////////////////////////////////////////////////////////////////////
#include "LogicalCollection.h"
#include "Aql/QueryCache.h"
#include "Basics/Barrier.h"
#include "Basics/ReadLocker.h"
#include "Basics/StaticStrings.h"
#include "Basics/StringUtils.h"
#include "Basics/ThreadPool.h"
#include "Basics/Timers.h"
#include "Basics/VelocyPackHelper.h"
#include "Basics/WriteLocker.h"
#include "Basics/process-utils.h"
#include "Cluster/ClusterInfo.h"
#include "Cluster/ClusterMethods.h"
#include "Cluster/FollowerInfo.h"
#include "Cluster/ServerState.h"
#include "RestServer/DatabaseFeature.h"
#include "StorageEngine/EngineSelectorFeature.h"
#include "MMFiles/MMFilesDocumentOperation.h"
#include "MMFiles/MMFilesLogfileManager.h"
#include "MMFiles/MMFilesEdgeIndex.h"
#include "MMFiles/MMFilesFulltextIndex.h"
#include "MMFiles/MMFilesGeoIndex.h"
#include "MMFiles/MMFilesHashIndex.h"
#include "MMFiles/MMFilesPersistentIndex.h"
#include "MMFiles/MMFilesPrimaryIndex.h"
#include "MMFiles/MMFilesSkiplistIndex.h"
#include "MMFiles/MMFilesToken.h"
#include "MMFiles/MMFilesWalMarker.h"
#include "MMFiles/MMFilesWalSlots.h"
#include "StorageEngine/StorageEngine.h"
#include "Utils/CollectionNameResolver.h"
#include "Utils/CollectionReadLocker.h"
#include "Utils/CollectionWriteLocker.h"
#include "Utils/Events.h"
#include "Utils/SingleCollectionTransaction.h"
#include "Utils/StandaloneTransactionContext.h"
#include "VocBase/DatafileStatisticsContainer.h"
#include "VocBase/IndexThreadFeature.h"
#include "VocBase/KeyGenerator.h"
#include "VocBase/ManagedDocumentResult.h"
#include "VocBase/PhysicalCollection.h"
#include "VocBase/ticks.h"
#include "VocBase/transaction.h"
#include <velocypack/Collection.h>
#include <velocypack/Iterator.h>
#include <velocypack/velocypack-aliases.h>
using namespace arangodb;
using Helper = arangodb::basics::VelocyPackHelper;
/// forward
int TRI_AddOperationTransaction(TRI_transaction_t*, TRI_voc_rid_t,
MMFilesDocumentOperation&,
MMFilesWalMarker const* marker, bool&);
/// @brief helper struct for filling indexes
class IndexFiller {
public:
IndexFiller(arangodb::Transaction* trx,
arangodb::LogicalCollection* collection, arangodb::Index* idx,
std::function<void(int)> callback)
: _trx(trx), _collection(collection), _idx(idx), _callback(callback) {}
void operator()() {
int res = TRI_ERROR_INTERNAL;
TRI_ASSERT(_idx->type() != Index::IndexType::TRI_IDX_TYPE_PRIMARY_INDEX);
try {
res = _collection->fillIndex(_trx, _idx);
} catch (...) {
}
_callback(res);
}
private:
arangodb::Transaction* _trx;
arangodb::LogicalCollection* _collection;
arangodb::Index* _idx;
std::function<void(int)> _callback;
};
namespace {
template <typename T>
static T ReadNumericValue(VPackSlice info, std::string const& name, T def) {
if (!info.isObject()) {
return def;
}
return Helper::getNumericValue<T>(info, name.c_str(), def);
}
template <typename T, typename BaseType>
static T ReadNumericValue(VPackSlice info, std::string const& name, T def) {
if (!info.isObject()) {
return def;
}
// nice extra conversion required for Visual Studio pickyness
return static_cast<T>(Helper::getNumericValue<BaseType>(
info, name.c_str(), static_cast<BaseType>(def)));
}
static bool ReadBooleanValue(VPackSlice info, std::string const& name,
bool def) {
if (!info.isObject()) {
return def;
}
return Helper::getBooleanValue(info, name.c_str(), def);
}
static TRI_voc_cid_t ReadCid(VPackSlice info) {
if (!info.isObject()) {
// ERROR CASE
return 0;
}
// Somehow the cid is now propagated to dbservers
TRI_voc_cid_t cid = Helper::extractIdValue(info);
if (cid == 0) {
if (ServerState::instance()->isDBServer()) {
cid = ClusterInfo::instance()->uniqid(1);
} else if (ServerState::instance()->isCoordinator()) {
cid = ClusterInfo::instance()->uniqid(1);
} else {
cid = TRI_NewTickServer();
}
}
return cid;
}
static TRI_voc_cid_t ReadPlanId(VPackSlice info, TRI_voc_cid_t cid) {
if (!info.isObject()) {
// ERROR CASE
return 0;
}
VPackSlice id = info.get("planId");
if (id.isNone()) {
return cid;
}
if (id.isString()) {
// string cid, e.g. "9988488"
return arangodb::basics::StringUtils::uint64(id.copyString());
} else if (id.isNumber()) {
// numeric cid, e.g. 9988488
return id.getNumericValue<uint64_t>();
}
// TODO Throw error for invalid type?
return cid;
}
static std::string const ReadStringValue(VPackSlice info,
std::string const& name,
std::string const& def) {
if (!info.isObject()) {
return def;
}
return Helper::getStringValue(info, name, def);
}
static std::shared_ptr<arangodb::velocypack::Buffer<uint8_t> const>
CopySliceValue(VPackSlice info, std::string const& name) {
if (!info.isObject()) {
return nullptr;
}
info = info.get(name);
if (info.isNone()) {
return nullptr;
}
return VPackBuilder::clone(info).steal();
}
// Creates an index object.
// It does not modify anything and does not insert things into
// the index.
// Is also save to use in cluster case.
static std::shared_ptr<Index> PrepareIndexFromSlice(
VPackSlice info, bool generateKey, LogicalCollection* col,
bool isClusterConstructor = false) {
if (!info.isObject()) {
THROW_ARANGO_EXCEPTION(TRI_ERROR_BAD_PARAMETER);
}
// extract type
VPackSlice value = info.get("type");
if (!value.isString()) {
// Compatibility with old v8-vocindex.
if (generateKey) {
THROW_ARANGO_EXCEPTION(TRI_ERROR_OUT_OF_MEMORY);
} else {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INTERNAL,
"invalid index type definition");
}
}
std::string tmp = value.copyString();
arangodb::Index::IndexType const type = arangodb::Index::type(tmp.c_str());
std::shared_ptr<Index> newIdx;
TRI_idx_iid_t iid = 0;
value = info.get("id");
if (value.isString()) {
iid = basics::StringUtils::uint64(value.copyString());
} else if (value.isNumber()) {
iid = Helper::getNumericValue<TRI_idx_iid_t>(info, "id", 0);
} else if (!generateKey) {
// In the restore case it is forbidden to NOT have id
THROW_ARANGO_EXCEPTION_MESSAGE(
TRI_ERROR_INTERNAL, "cannot restore index without index identifier");
}
if (iid == 0 && !isClusterConstructor) {
// Restore is not allowed to generate in id
TRI_ASSERT(generateKey);
iid = arangodb::Index::generateId();
}
switch (type) {
case arangodb::Index::TRI_IDX_TYPE_UNKNOWN: {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INTERNAL, "invalid index type");
}
case arangodb::Index::TRI_IDX_TYPE_PRIMARY_INDEX: {
if (!isClusterConstructor) {
// this indexes cannot be created directly
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INTERNAL,
"cannot create primary index");
}
newIdx.reset(new arangodb::MMFilesPrimaryIndex(col));
break;
}
case arangodb::Index::TRI_IDX_TYPE_EDGE_INDEX: {
if (!isClusterConstructor) {
// this indexes cannot be created directly
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INTERNAL,
"cannot create edge index");
}
newIdx.reset(new arangodb::MMFilesEdgeIndex(iid, col));
break;
}
case arangodb::Index::TRI_IDX_TYPE_GEO1_INDEX:
case arangodb::Index::TRI_IDX_TYPE_GEO2_INDEX: {
newIdx.reset(new arangodb::MMFilesGeoIndex(iid, col, info));
break;
}
case arangodb::Index::TRI_IDX_TYPE_HASH_INDEX: {
newIdx.reset(new arangodb::MMFilesHashIndex(iid, col, info));
break;
}
case arangodb::Index::TRI_IDX_TYPE_SKIPLIST_INDEX: {
newIdx.reset(new arangodb::MMFilesSkiplistIndex(iid, col, info));
break;
}
case arangodb::Index::TRI_IDX_TYPE_ROCKSDB_INDEX: {
newIdx.reset(new arangodb::PersistentIndex(iid, col, info));
break;
}
case arangodb::Index::TRI_IDX_TYPE_FULLTEXT_INDEX: {
newIdx.reset(new arangodb::MMFilesFulltextIndex(iid, col, info));
break;
}
}
if (newIdx == nullptr) {
THROW_ARANGO_EXCEPTION(TRI_ERROR_OUT_OF_MEMORY);
}
return newIdx;
};
}
/// @brief This the "copy" constructor used in the cluster
/// it is required to create objects that survive plan
/// modifications and can be freed
/// Can only be given to V8, cannot be used for functionality.
LogicalCollection::LogicalCollection(LogicalCollection const& other)
: _internalVersion(0),
_cid(other.cid()),
_planId(other.planId()),
_type(other.type()),
_name(other.name()),
_distributeShardsLike(other.distributeShardsLike()),
_avoidServers(other.avoidServers()),
_isSmart(other.isSmart()),
_status(other.status()),
_isLocal(false),
_isDeleted(other._isDeleted),
_doCompact(other.doCompact()),
_isSystem(other.isSystem()),
_isVolatile(other.isVolatile()),
_waitForSync(other.waitForSync()),
_journalSize(static_cast<TRI_voc_size_t>(other.journalSize())),
_keyOptions(other._keyOptions),
_version(other._version),
_indexBuckets(other.indexBuckets()),
_indexes(),
_replicationFactor(other.replicationFactor()),
_numberOfShards(other.numberOfShards()),
_allowUserKeys(other.allowUserKeys()),
_shardIds(new ShardMap()), // Not needed
_vocbase(other.vocbase()),
_cleanupIndexes(0),
_persistentIndexes(0),
_physical(EngineSelectorFeature::ENGINE->createPhysicalCollection(this)),
_useSecondaryIndexes(true),
_maxTick(0),
_keyGenerator(),
_nextCompactionStartIndex(0),
_lastCompactionStatus(nullptr),
_lastCompactionStamp(0.0),
_uncollectedLogfileEntries(0),
_isInitialIteration(false),
_revisionError(false) {
_keyGenerator.reset(KeyGenerator::factory(other.keyOptions()));
if (ServerState::instance()->isDBServer() ||
!ServerState::instance()->isRunningInCluster()) {
_followers.reset(new FollowerInfo(this));
}
// Copy over index definitions
_indexes.reserve(other._indexes.size());
for (auto const& idx : other._indexes) {
_indexes.emplace_back(idx);
}
setCompactionStatus("compaction not yet started");
}
// @brief Constructor used in coordinator case.
// The Slice contains the part of the plan that
// is relevant for this collection.
LogicalCollection::LogicalCollection(TRI_vocbase_t* vocbase,
VPackSlice const& info, bool isPhysical)
: _internalVersion(0),
_cid(ReadCid(info)),
_planId(ReadPlanId(info, _cid)),
_type(ReadNumericValue<TRI_col_type_e, int>(info, "type",
TRI_COL_TYPE_UNKNOWN)),
_name(ReadStringValue(info, "name", "")),
_distributeShardsLike(ReadStringValue(info, "distributeShardsLike", "")),
_isSmart(ReadBooleanValue(info, "isSmart", false)),
_status(ReadNumericValue<TRI_vocbase_col_status_e, int>(
info, "status", TRI_VOC_COL_STATUS_CORRUPTED)),
_isLocal(!ServerState::instance()->isCoordinator()),
_isDeleted(ReadBooleanValue(info, "deleted", false)),
_doCompact(ReadBooleanValue(info, "doCompact", true)),
_isSystem(IsSystemName(_name) &&
ReadBooleanValue(info, "isSystem", false)),
_isVolatile(ReadBooleanValue(info, "isVolatile", false)),
_waitForSync(ReadBooleanValue(info, "waitForSync", false)),
_journalSize(ReadNumericValue<TRI_voc_size_t>(
info, "maximalSize", // Backwards compatibility. Agency uses
// journalSize. paramters.json uses maximalSize
ReadNumericValue<TRI_voc_size_t>(info, "journalSize",
TRI_JOURNAL_DEFAULT_SIZE))),
_keyOptions(CopySliceValue(info, "keyOptions")),
_version(ReadNumericValue<uint32_t>(info, "version", currentVersion())),
_indexBuckets(ReadNumericValue<uint32_t>(
info, "indexBuckets", DatabaseFeature::defaultIndexBuckets())),
_replicationFactor(1),
_numberOfShards(ReadNumericValue<size_t>(info, "numberOfShards", 1)),
_allowUserKeys(ReadBooleanValue(info, "allowUserKeys", true)),
_shardIds(new ShardMap()),
_vocbase(vocbase),
_cleanupIndexes(0),
_persistentIndexes(0),
_path(ReadStringValue(info, "path", "")),
_physical(EngineSelectorFeature::ENGINE->createPhysicalCollection(this)),
_useSecondaryIndexes(true),
_maxTick(0),
_keyGenerator(),
_nextCompactionStartIndex(0),
_lastCompactionStatus(nullptr),
_lastCompactionStamp(0.0),
_uncollectedLogfileEntries(0),
_isInitialIteration(false),
_revisionError(false) {
if (!IsAllowedName(info)) {
THROW_ARANGO_EXCEPTION(TRI_ERROR_ARANGO_ILLEGAL_NAME);
}
if (_version < minimumVersion()) {
// collection is too "old"
std::string errorMsg(std::string("collection '") + _name +
"' has a too old version. Please start the server "
"with the --database.auto-upgrade option.");
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_FAILED, errorMsg);
}
if (_isVolatile && _waitForSync) {
// Illegal collection configuration
THROW_ARANGO_EXCEPTION_MESSAGE(
TRI_ERROR_BAD_PARAMETER,
"volatile collections do not support the waitForSync option");
}
if (_journalSize < TRI_JOURNAL_MINIMAL_SIZE) {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_BAD_PARAMETER,
"<properties>.journalSize too small");
}
VPackSlice shardKeysSlice = info.get("shardKeys");
bool const isCluster = ServerState::instance()->isRunningInCluster();
// Cluster only tests
if (ServerState::instance()->isCoordinator()) {
if ((_numberOfShards == 0 && !_isSmart) || _numberOfShards > 1000) {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_BAD_PARAMETER,
"invalid number of shards");
}
VPackSlice keyGenSlice = info.get("keyOptions");
if (keyGenSlice.isObject()) {
keyGenSlice = keyGenSlice.get("type");
if (keyGenSlice.isString()) {
StringRef tmp(keyGenSlice);
if (!tmp.empty() && tmp != "traditional") {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_CLUSTER_UNSUPPORTED,
"non-traditional key generators are "
"not supported for sharded "
"collections");
}
}
}
}
auto replicationFactorSlice = info.get("replicationFactor");
if (!replicationFactorSlice.isNone()) {
bool isError = true;
if (replicationFactorSlice.isNumber()) {
_replicationFactor = replicationFactorSlice.getNumber<size_t>();
// mop: only allow satellite collections to be created explicitly
if (_replicationFactor > 0 && _replicationFactor <= 10) {
isError = false;
#ifdef USE_ENTERPRISE
} else if (_replicationFactor == 0) {
isError = false;
#endif
}
}
#ifdef USE_ENTERPRISE
else if (replicationFactorSlice.isString() &&
replicationFactorSlice.copyString() == "satellite") {
_replicationFactor = 0;
_numberOfShards = 1;
_distributeShardsLike = "";
_avoidServers.clear();
isError = false;
}
#endif
if (isError) {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_BAD_PARAMETER,
"invalid replicationFactor");
}
}
if (shardKeysSlice.isNone() || isSatellite()) {
// Use default.
_shardKeys.emplace_back(StaticStrings::KeyString);
} else {
if (shardKeysSlice.isArray()) {
for (auto const& sk : VPackArrayIterator(shardKeysSlice)) {
if (sk.isString()) {
std::string key = sk.copyString();
// remove : char at the beginning or end (for enterprise)
std::string stripped;
if (!key.empty()) {
if (key.front() == ':') {
stripped = key.substr(1);
} else if (key.back() == ':') {
stripped = key.substr(0, key.size() - 1);
} else {
stripped = key;
}
}
// system attributes are not allowed (except _key)
if (!stripped.empty() && stripped != StaticStrings::IdString &&
stripped != StaticStrings::RevString) {
_shardKeys.emplace_back(key);
}
}
}
if (_shardKeys.empty() && !isCluster) {
// Compatibility. Old configs might store empty shard-keys locally.
// This is translated to ["_key"]. In cluster-case this always was
// forbidden.
_shardKeys.emplace_back(StaticStrings::KeyString);
}
}
}
if (_shardKeys.empty() || _shardKeys.size() > 8) {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_BAD_PARAMETER,
"invalid number of shard keys");
}
_keyGenerator.reset(KeyGenerator::factory(info.get("keyOptions")));
auto shardsSlice = info.get("shards");
if (shardsSlice.isObject()) {
for (auto const& shardSlice : VPackObjectIterator(shardsSlice)) {
if (shardSlice.key.isString() && shardSlice.value.isArray()) {
ShardID shard = shardSlice.key.copyString();
std::vector<ServerID> servers;
for (auto const& serverSlice : VPackArrayIterator(shardSlice.value)) {
servers.push_back(serverSlice.copyString());
}
_shardIds->emplace(shard, servers);
}
}
}
if (info.hasKey("avoidServers")) {
auto avoidServersSlice = info.get("avoidServers");
if (avoidServersSlice.isArray()) {
for (const auto& i : VPackArrayIterator(avoidServersSlice)) {
if (i.isString()) {
_avoidServers.push_back(i.copyString());
} else {
LOG(ERR) << "avoidServers must be a vector of strings we got " <<
avoidServersSlice.toJson() << ". discarding!" ;
_avoidServers.clear();
break;
}
}
}
}
if (_indexes.empty()) {
createInitialIndexes();
}
auto indexesSlice = info.get("indexes");
if (indexesSlice.isArray()) {
for (auto const& v : VPackArrayIterator(indexesSlice)) {
if (arangodb::basics::VelocyPackHelper::getBooleanValue(v, "error",
false)) {
// We have an error here.
// Do not add index.
// TODO Handle Properly
continue;
}
auto idx = PrepareIndexFromSlice(v, false, this, true);
if (idx->type() == Index::TRI_IDX_TYPE_PRIMARY_INDEX ||
idx->type() == Index::TRI_IDX_TYPE_EDGE_INDEX) {
continue;
}
if (isCluster) {
addIndexCoordinator(idx, false);
} else {
addIndex(idx);
}
}
}
#ifdef ARANGODB_ENABLE_MAINTAINER_MODE
if (_indexes[0]->type() != Index::IndexType::TRI_IDX_TYPE_PRIMARY_INDEX) {
LOG(ERR) << "got invalid indexes for collection '" << _name << "'";
for (auto const& it : _indexes) {
LOG(ERR) << "- " << it.get();
}
}
#endif
if (!ServerState::instance()->isCoordinator() && isPhysical) {
// If we are not in the coordinator we need a path
// to the physical data.
StorageEngine* engine = EngineSelectorFeature::ENGINE;
if (_path.empty()) {
_path = engine->createCollection(_vocbase, _cid, this);
}
}
int64_t count = ReadNumericValue<int64_t>(info, "count", -1);
if (count != -1) {
_physical->updateCount(count);
}
if (ServerState::instance()->isDBServer() ||
!ServerState::instance()->isRunningInCluster()) {
_followers.reset(new FollowerInfo(this));
}
// update server's tick value
TRI_UpdateTickServer(static_cast<TRI_voc_tick_t>(_cid));
setCompactionStatus("compaction not yet started");
}
LogicalCollection::~LogicalCollection() {}
bool LogicalCollection::IsAllowedName(VPackSlice parameters) {
bool allowSystem = ReadBooleanValue(parameters, "isSystem", false);
std::string name = ReadStringValue(parameters, "name", "");
if (name.empty()) {
return false;
}
bool ok;
char const* ptr;
size_t length = 0;
// check allow characters: must start with letter or underscore if system is
// allowed
for (ptr = name.c_str(); *ptr; ++ptr) {
if (length == 0) {
if (allowSystem) {
ok = (*ptr == '_') || ('a' <= *ptr && *ptr <= 'z') ||
('A' <= *ptr && *ptr <= 'Z');
} else {
ok = ('a' <= *ptr && *ptr <= 'z') || ('A' <= *ptr && *ptr <= 'Z');
}
} else {
ok = (*ptr == '_') || (*ptr == '-') || ('0' <= *ptr && *ptr <= '9') ||
('a' <= *ptr && *ptr <= 'z') || ('A' <= *ptr && *ptr <= 'Z');
}
if (!ok) {
return false;
}
++length;
}
// invalid name length
if (length == 0 || length > TRI_COL_NAME_LENGTH) {
return false;
}
return true;
}
/// @brief checks if a collection name is allowed
/// Returns true if the name is allowed and false otherwise
bool LogicalCollection::IsAllowedName(bool allowSystem,
std::string const& name) {
bool ok;
char const* ptr;
size_t length = 0;
// check allow characters: must start with letter or underscore if system is
// allowed
for (ptr = name.c_str(); *ptr; ++ptr) {
if (length == 0) {
if (allowSystem) {
ok = (*ptr == '_') || ('a' <= *ptr && *ptr <= 'z') ||
('A' <= *ptr && *ptr <= 'Z');
} else {
ok = ('a' <= *ptr && *ptr <= 'z') || ('A' <= *ptr && *ptr <= 'Z');
}
} else {
ok = (*ptr == '_') || (*ptr == '-') || ('0' <= *ptr && *ptr <= '9') ||
('a' <= *ptr && *ptr <= 'z') || ('A' <= *ptr && *ptr <= 'Z');
}
if (!ok) {
return false;
}
++length;
}
// invalid name length
if (length == 0 || length > TRI_COL_NAME_LENGTH) {
return false;
}
return true;
}
/// @brief whether or not a collection is fully collected
bool LogicalCollection::isFullyCollected() {
int64_t uncollected = _uncollectedLogfileEntries.load();
return (uncollected == 0);
}
void LogicalCollection::setNextCompactionStartIndex(size_t index) {
MUTEX_LOCKER(mutexLocker, _compactionStatusLock);
_nextCompactionStartIndex = index;
}
size_t LogicalCollection::getNextCompactionStartIndex() {
MUTEX_LOCKER(mutexLocker, _compactionStatusLock);
return _nextCompactionStartIndex;
}
void LogicalCollection::setCompactionStatus(char const* reason) {
TRI_ASSERT(reason != nullptr);
MUTEX_LOCKER(mutexLocker, _compactionStatusLock);
_lastCompactionStatus = reason;
}
uint64_t LogicalCollection::numberDocuments() const {
return primaryIndex()->size();
}
size_t LogicalCollection::journalSize() const { return _journalSize; }
uint32_t LogicalCollection::internalVersion() const { return _internalVersion; }
std::string LogicalCollection::cid_as_string() const {
return basics::StringUtils::itoa(_cid);
}
TRI_voc_cid_t LogicalCollection::planId() const { return _planId; }
TRI_col_type_e LogicalCollection::type() const { return _type; }
std::string LogicalCollection::name() const {
// TODO Activate this lock. Right now we have some locks outside.
// READ_LOCKER(readLocker, _lock);
return _name;
}
std::string const& LogicalCollection::distributeShardsLike() const {
return _distributeShardsLike;
}
void LogicalCollection::distributeShardsLike(std::string const& cid) {
_distributeShardsLike = cid;
}
std::vector<std::string> const& LogicalCollection::avoidServers() const {
return _avoidServers;
}
void LogicalCollection::avoidServers(std::vector<std::string> const& a) {
_avoidServers = a;
}
std::string LogicalCollection::dbName() const {
TRI_ASSERT(_vocbase != nullptr);
return _vocbase->name();
}
std::string const& LogicalCollection::path() const { return _path; }
TRI_vocbase_col_status_e LogicalCollection::status() const { return _status; }
TRI_vocbase_col_status_e LogicalCollection::getStatusLocked() {
READ_LOCKER(readLocker, _lock);
return _status;
}
void LogicalCollection::executeWhileStatusLocked(
std::function<void()> const& callback) {
READ_LOCKER(readLocker, _lock);
callback();
}
bool LogicalCollection::tryExecuteWhileStatusLocked(
std::function<void()> const& callback) {
TRY_READ_LOCKER(readLocker, _lock);
if (!readLocker.isLocked()) {
return false;
}
callback();
return true;
}
TRI_vocbase_col_status_e LogicalCollection::tryFetchStatus(bool& didFetch) {
TRY_READ_LOCKER(locker, _lock);
if (locker.isLocked()) {
didFetch = true;
return _status;
}
didFetch = false;
return TRI_VOC_COL_STATUS_CORRUPTED;
}
/// @brief returns a translation of a collection status
std::string LogicalCollection::statusString() {
READ_LOCKER(readLocker, _lock);
switch (_status) {
case TRI_VOC_COL_STATUS_UNLOADED:
return "unloaded";
case TRI_VOC_COL_STATUS_LOADED:
return "loaded";
case TRI_VOC_COL_STATUS_UNLOADING:
return "unloading";
case TRI_VOC_COL_STATUS_DELETED:
return "deleted";
case TRI_VOC_COL_STATUS_LOADING:
return "loading";
case TRI_VOC_COL_STATUS_CORRUPTED:
case TRI_VOC_COL_STATUS_NEW_BORN:
default:
return "unknown";
}
}
// SECTION: Properties
TRI_voc_rid_t LogicalCollection::revision() const {
// TODO CoordinatorCase
return _physical->revision();
}
bool LogicalCollection::isLocal() const { return _isLocal; }
bool LogicalCollection::deleted() const { return _isDeleted; }
bool LogicalCollection::doCompact() const { return _doCompact; }
bool LogicalCollection::isSystem() const { return _isSystem; }
bool LogicalCollection::isVolatile() const { return _isVolatile; }
bool LogicalCollection::waitForSync() const { return _waitForSync; }
bool LogicalCollection::isSmart() const { return _isSmart; }
std::unique_ptr<FollowerInfo> const& LogicalCollection::followers() const {
return _followers;
}
void LogicalCollection::setDeleted(bool newValue) { _isDeleted = newValue; }
/// @brief update statistics for a collection
void LogicalCollection::setRevision(TRI_voc_rid_t revision, bool force) {
if (revision > 0) {
// TODO Is this still true?
/// note: Old version the write-lock for the collection must be held to call
/// this
_physical->setRevision(revision, force);
}
}
// SECTION: Key Options
VPackSlice LogicalCollection::keyOptions() const {
if (_keyOptions == nullptr) {
return Helper::NullValue();
}
return VPackSlice(_keyOptions->data());
}
// SECTION: Indexes
uint32_t LogicalCollection::indexBuckets() const { return _indexBuckets; }
std::vector<std::shared_ptr<arangodb::Index>> const&
LogicalCollection::getIndexes() const {
return _indexes;
}
/// @brief return the primary index
// WARNING: Make sure that this LogicalCollection Instance
// is somehow protected. If it goes out of all scopes
// or it's indexes are freed the pointer returned will get invalidated.
arangodb::MMFilesPrimaryIndex* LogicalCollection::primaryIndex() const {
TRI_ASSERT(!_indexes.empty());
#ifdef ARANGODB_ENABLE_MAINTAINER_MODE
if (_indexes[0]->type() != Index::IndexType::TRI_IDX_TYPE_PRIMARY_INDEX) {
LOG(ERR) << "got invalid indexes for collection '" << _name << "'";
for (auto const& it : _indexes) {
LOG(ERR) << "- " << it.get();
}
}
#endif
TRI_ASSERT(_indexes[0]->type() ==
Index::IndexType::TRI_IDX_TYPE_PRIMARY_INDEX);
// the primary index must be the index at position #0
return static_cast<arangodb::MMFilesPrimaryIndex*>(_indexes[0].get());
}
void LogicalCollection::getIndexesVPack(VPackBuilder& result,
bool withFigures) const {
result.openArray();
for (auto const& idx : _indexes) {
result.openObject();
idx->toVelocyPack(result, withFigures);
result.close();
}
result.close();
}
// SECTION: Replication
int LogicalCollection::replicationFactor() const {
return static_cast<int>(_replicationFactor);
}
// SECTION: Sharding
int LogicalCollection::numberOfShards() const {
return static_cast<int>(_numberOfShards);
}
bool LogicalCollection::allowUserKeys() const { return _allowUserKeys; }
#ifndef USE_ENTERPRISE
bool LogicalCollection::usesDefaultShardKeys() const {
return (_shardKeys.size() == 1 && _shardKeys[0] == StaticStrings::KeyString);
}
#endif
std::vector<std::string> const& LogicalCollection::shardKeys() const {
return _shardKeys;
}
std::shared_ptr<ShardMap> LogicalCollection::shardIds() const {
// TODO make threadsafe update on the cache.
return _shardIds;
}
void LogicalCollection::setShardMap(std::shared_ptr<ShardMap>& map) {
_shardIds = map;
}
// SECTION: Modification Functions
// asks the storage engine to rename the collection to the given name
// and persist the renaming info. It is guaranteed by the server
// that no other active collection with the same name and id exists in the same
// database when this function is called. If this operation fails somewhere in
// the middle, the storage engine is required to fully revert the rename
// operation
// and throw only then, so that subsequent collection creation/rename requests
// will
// not fail. the WAL entry for the rename will be written *after* the call
// to "renameCollection" returns
int LogicalCollection::rename(std::string const& newName) {
// Should only be called from inside vocbase.
// Otherwise caching is destroyed.
TRI_ASSERT(!ServerState::instance()->isCoordinator()); // NOT YET IMPLEMENTED
WRITE_LOCKER_EVENTUAL(locker, _lock, 1000);
// Check for illeagal states.
switch (_status) {
case TRI_VOC_COL_STATUS_CORRUPTED:
return TRI_ERROR_ARANGO_CORRUPTED_COLLECTION;
case TRI_VOC_COL_STATUS_DELETED:
return TRI_ERROR_ARANGO_COLLECTION_NOT_FOUND;
default:
// Fall through intentional
break;
}
// Check for duplicate name
auto other = _vocbase->lookupCollection(newName);
if (other != nullptr) {
return TRI_ERROR_ARANGO_DUPLICATE_NAME;
}
switch (_status) {
case TRI_VOC_COL_STATUS_UNLOADED:
case TRI_VOC_COL_STATUS_LOADED:
case TRI_VOC_COL_STATUS_UNLOADING:
case TRI_VOC_COL_STATUS_LOADING: {
break;
}
default:
// Unknown status
return TRI_ERROR_INTERNAL;
}
std::string oldName = _name;
_name = newName;
// Okay we can finally rename safely
try {
StorageEngine* engine = EngineSelectorFeature::ENGINE;
bool const doSync =
application_features::ApplicationServer::getFeature<DatabaseFeature>(
"Database")
->forceSyncProperties();
engine->changeCollection(_vocbase, _cid, this, doSync);
} catch (basics::Exception const& ex) {
// Engine Rename somehow failed. Reset to old name
_name = oldName;
return ex.code();
} catch (...) {
// Engine Rename somehow failed. Reset to old name
_name = oldName;
return TRI_ERROR_INTERNAL;
}
// CHECK if this ordering is okay. Before change the version was increased
// after swapping in vocbase mapping.
increaseInternalVersion();
return TRI_ERROR_NO_ERROR;
}
int LogicalCollection::close() {
// This was unload() in 3.0
auto primIdx = primaryIndex();
auto idxSize = primIdx->size();
if (!_isDeleted &&
_physical->initialCount() != static_cast<int64_t>(idxSize)) {
_physical->updateCount(idxSize);
// save new "count" value
StorageEngine* engine = EngineSelectorFeature::ENGINE;
bool const doSync =
application_features::ApplicationServer::getFeature<DatabaseFeature>(
"Database")
->forceSyncProperties();
engine->changeCollection(_vocbase, _cid, this, doSync);
}
// We also have to unload the indexes.
for (auto& idx : _indexes) {
idx->unload();
}
return getPhysical()->close();
}
void LogicalCollection::unload() {
}
void LogicalCollection::drop() {
// make sure collection has been closed
this->close();
TRI_ASSERT(!ServerState::instance()->isCoordinator());
StorageEngine* engine = EngineSelectorFeature::ENGINE;
engine->dropCollection(_vocbase, this);
_isDeleted = true;
// save some memory by freeing the indexes
_indexes.clear();
try {
// close collection. this will also invalidate the revisions cache
_physical->close();
} catch (...) {
// don't throw from here... dropping should succeed
}
}
void LogicalCollection::setStatus(TRI_vocbase_col_status_e status) {
_status = status;
if (status == TRI_VOC_COL_STATUS_LOADED) {
increaseInternalVersion();
}
}
void LogicalCollection::toVelocyPackForAgency(VPackBuilder& result) {
_status = TRI_VOC_COL_STATUS_LOADED;
result.openObject();
toVelocyPackInObject(result);
result.close(); // Base Object
}
void LogicalCollection::toVelocyPack(VPackBuilder& result,
bool withPath) const {
result.openObject();
toVelocyPackInObject(result);
result.add(
"cid",
VPackValue(std::to_string(_cid))); // export cid for compatibility, too
result.add("planId",
VPackValue(std::to_string(_planId))); // export planId for cluster
result.add("version", VPackValue(_version));
result.add("count", VPackValue(_physical->initialCount()));
if (withPath) {
result.add("path", VPackValue(_path));
}
result.add("allowUserKeys", VPackValue(_allowUserKeys));
result.close();
}
// Internal helper that inserts VPack info into an existing object and leaves
// the object open
void LogicalCollection::toVelocyPackInObject(VPackBuilder& result) const {
result.add("id", VPackValue(std::to_string(_cid)));
result.add("name", VPackValue(_name));
result.add("type", VPackValue(static_cast<int>(_type)));
result.add("status", VPackValue(_status));
result.add("deleted", VPackValue(_isDeleted));
result.add("doCompact", VPackValue(_doCompact));
result.add("isSystem", VPackValue(_isSystem));
result.add("isVolatile", VPackValue(_isVolatile));
result.add("waitForSync", VPackValue(_waitForSync));
result.add("journalSize", VPackValue(_journalSize));
result.add("indexBuckets", VPackValue(_indexBuckets));
result.add("replicationFactor", VPackValue(_replicationFactor));
result.add("numberOfShards", VPackValue(_numberOfShards));
if (!_distributeShardsLike.empty()) {
result.add("distributeShardsLike", VPackValue(_distributeShardsLike));
}
if (!_avoidServers.empty()) {
result.add(VPackValue("avoidServers"));
VPackArrayBuilder b(&result);
for (auto const& i : _avoidServers) {
result.add(VPackValue(i));
}
}
if (_keyGenerator != nullptr) {
result.add(VPackValue("keyOptions"));
result.openObject();
_keyGenerator->toVelocyPack(result);
result.close();
}
result.add(VPackValue("shardKeys"));
result.openArray();
for (auto const& key : _shardKeys) {
result.add(VPackValue(key));
}
result.close(); // shardKeys
result.add(VPackValue("shards"));
result.openObject();
for (auto const& shards : *_shardIds) {
result.add(VPackValue(shards.first));
result.openArray();
for (auto const& servers : shards.second) {
result.add(VPackValue(servers));
}
result.close(); // server array
}
result.close(); // shards
result.add(VPackValue("indexes"));
getIndexesVPack(result, false);
}
void LogicalCollection::toVelocyPack(VPackBuilder& builder, bool includeIndexes,
TRI_voc_tick_t maxTick) {
TRI_ASSERT(!builder.isClosed());
StorageEngine* engine = EngineSelectorFeature::ENGINE;
engine->getCollectionInfo(_vocbase, _cid, builder, includeIndexes, maxTick);
}
void LogicalCollection::increaseInternalVersion() { ++_internalVersion; }
int LogicalCollection::update(VPackSlice const& slice, bool doSync) {
// the following collection properties are intentionally not updated as
// updating
// them would be very complicated:
// - _cid
// - _name
// - _type
// - _isSystem
// - _isVolatile
// ... probably a few others missing here ...
WRITE_LOCKER(writeLocker, _infoLock);
// some basic validation...
if (isVolatile() && arangodb::basics::VelocyPackHelper::getBooleanValue(
slice, "waitForSync", waitForSync())) {
// the combination of waitForSync and isVolatile makes no sense
THROW_ARANGO_EXCEPTION_MESSAGE(
TRI_ERROR_BAD_PARAMETER,
"volatile collections do not support the waitForSync option");
}
if (isVolatile() != arangodb::basics::VelocyPackHelper::getBooleanValue(
slice, "isVolatile", isVolatile())) {
THROW_ARANGO_EXCEPTION_MESSAGE(
TRI_ERROR_BAD_PARAMETER,
"isVolatile option cannot be changed at runtime");
}
uint32_t tmp = arangodb::basics::VelocyPackHelper::getNumericValue<uint32_t>(
slice, "indexBuckets",
2 /*Just for validation, this default Value passes*/);
if (tmp == 0 || tmp > 1024) {
THROW_ARANGO_EXCEPTION_MESSAGE(
TRI_ERROR_BAD_PARAMETER,
"indexBuckets must be a two-power between 1 and 1024");
}
// end of validation
_doCompact = Helper::getBooleanValue(slice, "doCompact", _doCompact);
_waitForSync = Helper::getBooleanValue(slice, "waitForSync", _waitForSync);
if (slice.hasKey("journalSize")) {
_journalSize = Helper::getNumericValue<TRI_voc_size_t>(slice, "journalSize",
_journalSize);
} else {
_journalSize = Helper::getNumericValue<TRI_voc_size_t>(slice, "maximalSize",
_journalSize);
}
_indexBuckets =
Helper::getNumericValue<uint32_t>(slice, "indexBuckets", _indexBuckets);
if (!_isLocal) {
// We need to inform the cluster as well
return ClusterInfo::instance()->setCollectionPropertiesCoordinator(
_vocbase->name(), cid_as_string(), this);
}
int64_t count = arangodb::basics::VelocyPackHelper::getNumericValue<int64_t>(
slice, "count", _physical->initialCount());
if (count != _physical->initialCount()) {
_physical->updateCount(count);
}
StorageEngine* engine = EngineSelectorFeature::ENGINE;
engine->changeCollection(_vocbase, _cid, this, doSync);
return TRI_ERROR_NO_ERROR;
}
/// @brief return the figures for a collection
std::shared_ptr<arangodb::velocypack::Builder> LogicalCollection::figures() {
auto builder = std::make_shared<VPackBuilder>();
if (ServerState::instance()->isCoordinator()) {
builder->openObject();
builder->close();
int res = figuresOnCoordinator(dbName(), cid_as_string(), builder);
if (res != TRI_ERROR_NO_ERROR) {
THROW_ARANGO_EXCEPTION(res);
}
} else {
builder->openObject();
// add index information
size_t sizeIndexes = getPhysical()->memory();
size_t numIndexes = 0;
for (auto const& idx : _indexes) {
sizeIndexes += static_cast<size_t>(idx->memory());
++numIndexes;
}
builder->add("indexes", VPackValue(VPackValueType::Object));
builder->add("count", VPackValue(numIndexes));
builder->add("size", VPackValue(sizeIndexes));
builder->close(); // indexes
builder->add("lastTick", VPackValue(_maxTick));
builder->add("uncollectedLogfileEntries",
VPackValue(_uncollectedLogfileEntries));
// fills in compaction status
char const* lastCompactionStatus = "-";
char lastCompactionStampString[21];
lastCompactionStampString[0] = '-';
lastCompactionStampString[1] = '\0';
double lastCompactionStamp;
{
MUTEX_LOCKER(mutexLocker, _compactionStatusLock);
lastCompactionStatus = _lastCompactionStatus;
lastCompactionStamp = _lastCompactionStamp;
}
if (lastCompactionStatus != nullptr) {
if (lastCompactionStamp == 0.0) {
lastCompactionStamp = TRI_microtime();
}
struct tm tb;
time_t tt = static_cast<time_t>(lastCompactionStamp);
TRI_gmtime(tt, &tb);
strftime(&lastCompactionStampString[0], sizeof(lastCompactionStampString),
"%Y-%m-%dT%H:%M:%SZ", &tb);
}
builder->add("compactionStatus", VPackValue(VPackValueType::Object));
builder->add("message", VPackValue(lastCompactionStatus));
builder->add("time", VPackValue(&lastCompactionStampString[0]));
builder->close(); // compactionStatus
// add engine-specific figures
getPhysical()->figures(builder);
builder->close();
}
return builder;
}
/// @brief opens an existing collection
void LogicalCollection::open(bool ignoreErrors) {
VPackBuilder builder;
StorageEngine* engine = EngineSelectorFeature::ENGINE;
engine->getCollectionInfo(_vocbase, cid(), builder, true, 0);
VPackSlice initialCount =
builder.slice().get(std::vector<std::string>({"parameters", "count"}));
if (initialCount.isNumber()) {
int64_t count = initialCount.getNumber<int64_t>();
if (count > 0) {
_physical->updateCount(count);
}
}
double start = TRI_microtime();
LOG_TOPIC(TRACE, Logger::PERFORMANCE)
<< "open-document-collection { collection: " << _vocbase->name() << "/"
<< _name << " }";
int res = openWorker(ignoreErrors);
if (res != TRI_ERROR_NO_ERROR) {
THROW_ARANGO_EXCEPTION_MESSAGE(
res, std::string("cannot open document collection from path '") +
path() + "': " + TRI_errno_string(res));
}
arangodb::SingleCollectionTransaction trx(
arangodb::StandaloneTransactionContext::Create(_vocbase), cid(),
TRI_TRANSACTION_WRITE);
// build the primary index
double startIterate = TRI_microtime();
LOG_TOPIC(TRACE, Logger::PERFORMANCE)
<< "iterate-markers { collection: " << _vocbase->name() << "/" << _name
<< " }";
_isInitialIteration = true;
// iterate over all markers of the collection
res = getPhysical()->iterateMarkersOnLoad(&trx);
LOG_TOPIC(TRACE, Logger::PERFORMANCE)
<< "[timer] " << Logger::FIXED(TRI_microtime() - startIterate)
<< " s, iterate-markers { collection: " << _vocbase->name() << "/"
<< _name << " }";
if (res != TRI_ERROR_NO_ERROR) {
THROW_ARANGO_EXCEPTION_MESSAGE(
res, std::string("cannot iterate data of document collection: ") +
TRI_errno_string(res));
}
_isInitialIteration = false;
// build the indexes meta-data, but do not fill the indexes yet
{
auto old = useSecondaryIndexes();
// turn filling of secondary indexes off. we're now only interested in
// getting
// the indexes' definition. we'll fill them below ourselves.
useSecondaryIndexes(false);
try {
detectIndexes(&trx);
useSecondaryIndexes(old);
} catch (basics::Exception const& ex) {
useSecondaryIndexes(old);
THROW_ARANGO_EXCEPTION_MESSAGE(
ex.code(),
std::string("cannot initialize collection indexes: ") + ex.what());
} catch (std::exception const& ex) {
useSecondaryIndexes(old);
THROW_ARANGO_EXCEPTION_MESSAGE(
TRI_ERROR_INTERNAL,
std::string("cannot initialize collection indexes: ") + ex.what());
} catch (...) {
useSecondaryIndexes(old);
THROW_ARANGO_EXCEPTION_MESSAGE(
TRI_ERROR_INTERNAL,
"cannot initialize collection indexes: unknown exception");
}
}
if (!MMFilesLogfileManager::instance()->isInRecovery()) {
// build the index structures, and fill the indexes
fillIndexes(&trx);
}
LOG_TOPIC(TRACE, Logger::PERFORMANCE)
<< "[timer] " << Logger::FIXED(TRI_microtime() - start)
<< " s, open-document-collection { collection: " << _vocbase->name()
<< "/" << _name << " }";
// successfully opened collection. now adjust version number
if (_version != VERSION_31 && !_revisionError &&
application_features::ApplicationServer::server
->getFeature<DatabaseFeature>("Database")
->check30Revisions()) {
_version = VERSION_31;
bool const doSync =
application_features::ApplicationServer::getFeature<DatabaseFeature>(
"Database")
->forceSyncProperties();
StorageEngine* engine = EngineSelectorFeature::ENGINE;
engine->changeCollection(_vocbase, _cid, this, doSync);
}
TRI_UpdateTickServer(_cid);
}
/// @brief opens an existing collection
int LogicalCollection::openWorker(bool ignoreErrors) {
StorageEngine* engine = EngineSelectorFeature::ENGINE;
double start = TRI_microtime();
LOG_TOPIC(TRACE, Logger::PERFORMANCE)
<< "open-collection { collection: " << _vocbase->name() << "/" << name()
<< " }";
try {
// check for journals and datafiles
int res = engine->openCollection(_vocbase, this, ignoreErrors);
if (res != TRI_ERROR_NO_ERROR) {
LOG(DEBUG) << "cannot open '" << _path << "', check failed";
return res;
}
LOG_TOPIC(TRACE, Logger::PERFORMANCE)
<< "[timer] " << Logger::FIXED(TRI_microtime() - start)
<< " s, open-collection { collection: " << _vocbase->name() << "/"
<< name() << " }";
return TRI_ERROR_NO_ERROR;
} catch (basics::Exception const& ex) {
LOG(ERR) << "cannot load collection parameter file '" << _path
<< "': " << ex.what();
return ex.code();
} catch (std::exception const& ex) {
LOG(ERR) << "cannot load collection parameter file '" << _path
<< "': " << ex.what();
return TRI_ERROR_INTERNAL;
}
}
/// SECTION Indexes
std::shared_ptr<Index> LogicalCollection::lookupIndex(
TRI_idx_iid_t idxId) const {
for (auto const& idx : _indexes) {
if (idx->id() == idxId) {
return idx;
}
}
return nullptr;
}
std::shared_ptr<Index> LogicalCollection::lookupIndex(
VPackSlice const& info) const {
if (!info.isObject()) {
// Compatibility with old v8-vocindex.
THROW_ARANGO_EXCEPTION(TRI_ERROR_OUT_OF_MEMORY);
}
// extract type
VPackSlice value = info.get("type");
if (!value.isString()) {
// Compatibility with old v8-vocindex.
THROW_ARANGO_EXCEPTION(TRI_ERROR_OUT_OF_MEMORY);
}
std::string tmp = value.copyString();
arangodb::Index::IndexType const type = arangodb::Index::type(tmp.c_str());
for (auto const& idx : _indexes) {
if (idx->type() == type) {
// Only check relevant indices
if (idx->matchesDefinition(info)) {
// We found an index for this definition.
return idx;
}
}
}
return nullptr;
}
std::shared_ptr<Index> LogicalCollection::createIndex(Transaction* trx,
VPackSlice const& info,
bool& created) {
// TODO Get LOCK for the vocbase
auto idx = lookupIndex(info);
if (idx != nullptr) {
created = false;
// We already have this index.
// Should we throw instead?
return idx;
}
// We are sure that we do not have an index of this type.
// We also hold the lock.
// Create it
idx = PrepareIndexFromSlice(info, true, this);
TRI_ASSERT(idx != nullptr);
if (ServerState::instance()->isCoordinator()) {
// In the coordinator case we do not fill the index
// We only inform the others.
addIndexCoordinator(idx, true);
created = true;
return idx;
}
TRI_ASSERT(idx.get()->type() != Index::IndexType::TRI_IDX_TYPE_PRIMARY_INDEX);
int res = fillIndex(trx, idx.get(), false);
if (res != TRI_ERROR_NO_ERROR) {
THROW_ARANGO_EXCEPTION(res);
}
bool const writeMarker =
!MMFilesLogfileManager::instance()->isInRecovery();
res = saveIndex(idx.get(), writeMarker);
if (res != TRI_ERROR_NO_ERROR) {
THROW_ARANGO_EXCEPTION(res);
}
// Until here no harm is done if sth fails. The shared ptr will clean up. if
// left before
addIndex(idx);
{
VPackBuilder builder;
bool const doSync =
application_features::ApplicationServer::getFeature<DatabaseFeature>(
"Database")->forceSyncProperties();
toVelocyPack(builder, false);
update(builder.slice(), doSync);
}
created = true;
return idx;
}
int LogicalCollection::restoreIndex(Transaction* trx, VPackSlice const& info,
std::shared_ptr<arangodb::Index>& idx) {
// The coordinator can never get into this state!
TRI_ASSERT(!ServerState::instance()->isCoordinator());
idx.reset(); // Clear it to make sure.
if (!info.isObject()) {
return TRI_ERROR_INTERNAL;
}
// We create a new Index object to make sure that the index
// is not handed out except for a successful case.
std::shared_ptr<Index> newIdx;
try {
newIdx = PrepareIndexFromSlice(info, false, this);
} catch (arangodb::basics::Exception const& e) {
// Something with index creation went wrong.
// Just report.
return e.code();
}
TRI_ASSERT(newIdx != nullptr);
TRI_UpdateTickServer(newIdx->id());
TRI_ASSERT(newIdx.get()->type() !=
Index::IndexType::TRI_IDX_TYPE_PRIMARY_INDEX);
int res = fillIndex(trx, newIdx.get());
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
addIndex(newIdx);
idx = newIdx;
return TRI_ERROR_NO_ERROR;
}
/// @brief saves an index
int LogicalCollection::saveIndex(arangodb::Index* idx, bool writeMarker) {
TRI_ASSERT(!ServerState::instance()->isCoordinator());
std::shared_ptr<VPackBuilder> builder;
try {
builder = idx->toVelocyPack(false);
} catch (...) {
LOG(ERR) << "cannot save index definition";
return TRI_ERROR_INTERNAL;
}
if (builder == nullptr) {
LOG(ERR) << "cannot save index definition";
return TRI_ERROR_OUT_OF_MEMORY;
}
StorageEngine* engine = EngineSelectorFeature::ENGINE;
engine->createIndex(_vocbase, cid(), idx->id(), builder->slice());
if (!writeMarker) {
return TRI_ERROR_NO_ERROR;
}
int res = TRI_ERROR_NO_ERROR;
try {
MMFilesCollectionMarker marker(TRI_DF_MARKER_VPACK_CREATE_INDEX,
_vocbase->id(), cid(),
builder->slice());
MMFilesWalSlotInfoCopy slotInfo =
MMFilesLogfileManager::instance()->allocateAndWrite(marker,
false);
if (slotInfo.errorCode != TRI_ERROR_NO_ERROR) {
THROW_ARANGO_EXCEPTION(slotInfo.errorCode);
}
return TRI_ERROR_NO_ERROR;
} catch (arangodb::basics::Exception const& ex) {
res = ex.code();
} catch (...) {
res = TRI_ERROR_INTERNAL;
}
// TODO: what to do here?
return res;
}
/// @brief removes an index by id
bool LogicalCollection::removeIndex(TRI_idx_iid_t iid) {
size_t const n = _indexes.size();
for (size_t i = 0; i < n; ++i) {
auto idx = _indexes[i];
if (!idx->canBeDropped()) {
continue;
}
if (idx->id() == iid) {
// found!
idx->drop();
_indexes.erase(_indexes.begin() + i);
// update statistics
if (idx->type() == arangodb::Index::TRI_IDX_TYPE_FULLTEXT_INDEX) {
--_cleanupIndexes;
}
if (idx->isPersistent()) {
--_persistentIndexes;
}
return true;
}
}
// not found
return false;
}
/// @brief drops an index, including index file removal and replication
bool LogicalCollection::dropIndex(TRI_idx_iid_t iid, bool writeMarker) {
TRI_ASSERT(!ServerState::instance()->isCoordinator());
if (iid == 0) {
// invalid index id or primary index
events::DropIndex("", std::to_string(iid), TRI_ERROR_NO_ERROR);
return true;
}
arangodb::aql::QueryCache::instance()->invalidate(_vocbase, name());
if (!removeIndex(iid)) {
// We tried to remove an index that does not exist
events::DropIndex("", std::to_string(iid),
TRI_ERROR_ARANGO_INDEX_NOT_FOUND);
return false;
}
StorageEngine* engine = EngineSelectorFeature::ENGINE;
engine->dropIndex(_vocbase, cid(), iid);
{
VPackBuilder builder;
bool const doSync =
application_features::ApplicationServer::getFeature<DatabaseFeature>(
"Database")->forceSyncProperties();
toVelocyPack(builder, false);
update(builder.slice(), doSync);
}
if (writeMarker) {
int res = TRI_ERROR_NO_ERROR;
try {
VPackBuilder markerBuilder;
markerBuilder.openObject();
markerBuilder.add("id", VPackValue(std::to_string(iid)));
markerBuilder.close();
MMFilesCollectionMarker marker(TRI_DF_MARKER_VPACK_DROP_INDEX,
_vocbase->id(), cid(),
markerBuilder.slice());
MMFilesWalSlotInfoCopy slotInfo =
MMFilesLogfileManager::instance()->allocateAndWrite(marker,
false);
if (slotInfo.errorCode != TRI_ERROR_NO_ERROR) {
THROW_ARANGO_EXCEPTION(slotInfo.errorCode);
}
events::DropIndex("", std::to_string(iid), TRI_ERROR_NO_ERROR);
return true;
} catch (basics::Exception const& ex) {
res = ex.code();
} catch (...) {
res = TRI_ERROR_INTERNAL;
}
LOG(WARN) << "could not save index drop marker in log: "
<< TRI_errno_string(res);
events::DropIndex("", std::to_string(iid), res);
// TODO: what to do here?
}
return true;
}
/// @brief creates the initial indexes for the collection
void LogicalCollection::createInitialIndexes() {
// TODO Properly fix this. The outside should make sure that only NEW
// collections
// try to create the indexes.
if (!_indexes.empty()) {
return;
}
// create primary index
auto primaryIndex = std::make_shared<arangodb::MMFilesPrimaryIndex>(this);
addIndex(primaryIndex);
// create edges index
if (_type == TRI_COL_TYPE_EDGE) {
auto edgeIndex = std::make_shared<arangodb::MMFilesEdgeIndex>(1, this);
addIndex(edgeIndex);
}
}
/// @brief iterator for index open
bool LogicalCollection::openIndex(VPackSlice const& description,
arangodb::Transaction* trx) {
// VelocyPack must be an index description
if (!description.isObject()) {
return false;
}
bool unused = false;
auto idx = createIndex(trx, description, unused);
if (idx == nullptr) {
// error was already printed if we get here
return false;
}
return true;
}
/// @brief enumerate all indexes of the collection, but don't fill them yet
int LogicalCollection::detectIndexes(arangodb::Transaction* trx) {
StorageEngine* engine = EngineSelectorFeature::ENGINE;
VPackBuilder builder;
engine->getCollectionInfo(_vocbase, _cid, builder, true, UINT64_MAX);
// iterate over all index files
for (auto const& it : VPackArrayIterator(builder.slice().get("indexes"))) {
bool ok = openIndex(it, trx);
if (!ok) {
LOG(ERR) << "cannot load index for collection '" << name() << "'";
}
}
return TRI_ERROR_NO_ERROR;
}
int LogicalCollection::fillIndexes(arangodb::Transaction* trx) {
// distribute the work to index threads plus this thread
TRI_ASSERT(!ServerState::instance()->isCoordinator());
size_t const n = _indexes.size();
if (n == 1) {
return TRI_ERROR_NO_ERROR;
}
double start = TRI_microtime();
// only log performance infos for indexes with more than this number of
// entries
static size_t const NotificationSizeThreshold = 131072;
auto primaryIndex = this->primaryIndex();
if (primaryIndex->size() > NotificationSizeThreshold) {
LOG_TOPIC(TRACE, Logger::PERFORMANCE)
<< "fill-indexes-document-collection { collection: " << _vocbase->name()
<< "/" << name() << " }, indexes: " << (n - 1);
}
TRI_ASSERT(n > 1);
std::atomic<int> result(TRI_ERROR_NO_ERROR);
{
arangodb::basics::Barrier barrier(n - 1);
auto indexPool =
application_features::ApplicationServer::getFeature<IndexThreadFeature>(
"IndexThread")
->getThreadPool();
auto callback = [&barrier, &result](int res) -> void {
// update the error code
if (res != TRI_ERROR_NO_ERROR) {
int expected = TRI_ERROR_NO_ERROR;
result.compare_exchange_strong(expected, res,
std::memory_order_acquire);
}
barrier.join();
};
// now actually fill the secondary indexes
for (size_t i = 1; i < n; ++i) {
auto idx = _indexes[i];
TRI_ASSERT(idx->type() != Index::IndexType::TRI_IDX_TYPE_PRIMARY_INDEX);
// index threads must come first, otherwise this thread will block the
// loop and
// prevent distribution to threads
if (indexPool != nullptr && i != (n - 1)) {
try {
// move task into thread pool
IndexFiller indexTask(trx, this, idx.get(), callback);
static_cast<arangodb::basics::ThreadPool*>(indexPool)->enqueue(
indexTask);
} catch (...) {
// set error code
int expected = TRI_ERROR_NO_ERROR;
result.compare_exchange_strong(expected, TRI_ERROR_INTERNAL,
std::memory_order_acquire);
barrier.join();
}
} else {
// fill index in this thread
int res;
try {
res = fillIndex(trx, idx.get());
} catch (...) {
res = TRI_ERROR_INTERNAL;
}
if (res != TRI_ERROR_NO_ERROR) {
int expected = TRI_ERROR_NO_ERROR;
result.compare_exchange_strong(expected, res,
std::memory_order_acquire);
}
barrier.join();
}
}
// barrier waits here until all threads have joined
}
LOG_TOPIC(TRACE, Logger::PERFORMANCE)
<< "[timer] " << Logger::FIXED(TRI_microtime() - start)
<< " s, fill-indexes-document-collection { collection: "
<< _vocbase->name() << "/" << name() << " }, indexes: " << (n - 1);
return result.load();
}
void LogicalCollection::addIndex(std::shared_ptr<arangodb::Index> idx) {
// primary index must be added at position 0
TRI_ASSERT(idx->type() != arangodb::Index::TRI_IDX_TYPE_PRIMARY_INDEX ||
_indexes.empty());
auto const id = idx->id();
for (auto const& it : _indexes) {
if (it->id() == id) {
// already have this particular index. do not add it again
return;
}
}
TRI_UpdateTickServer(static_cast<TRI_voc_tick_t>(id));
_indexes.emplace_back(idx);
// update statistics
if (idx->type() == arangodb::Index::TRI_IDX_TYPE_FULLTEXT_INDEX) {
++_cleanupIndexes;
}
if (idx->isPersistent()) {
++_persistentIndexes;
}
}
void LogicalCollection::addIndexCoordinator(
std::shared_ptr<arangodb::Index> idx, bool distribute) {
auto const id = idx->id();
for (auto const& it : _indexes) {
if (it->id() == id) {
// already have this particular index. do not add it again
return;
}
}
_indexes.emplace_back(idx);
if (distribute) {
THROW_ARANGO_EXCEPTION(TRI_ERROR_NOT_IMPLEMENTED);
}
}
/// @brief garbage-collect a collection's indexes
int LogicalCollection::cleanupIndexes() {
int res = TRI_ERROR_NO_ERROR;
// cleaning indexes is expensive, so only do it if the flag is set for the
// collection
if (_cleanupIndexes > 0) {
WRITE_LOCKER(writeLocker, _idxLock);
for (auto& idx : _indexes) {
if (idx->type() == arangodb::Index::TRI_IDX_TYPE_FULLTEXT_INDEX) {
res = idx->cleanup();
if (res != TRI_ERROR_NO_ERROR) {
break;
}
}
}
}
return res;
}
/// @brief reads an element from the document collection
int LogicalCollection::read(Transaction* trx, std::string const& key,
ManagedDocumentResult& result, bool lock) {
return read(trx, StringRef(key.c_str(), key.size()), result, lock);
}
int LogicalCollection::read(Transaction* trx, StringRef const& key,
ManagedDocumentResult& result, bool lock) {
TransactionBuilderLeaser builder(trx);
builder->add(VPackValuePair(key.data(), key.size(), VPackValueType::String));
VPackSlice slice = builder->slice();
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(this, useDeadlockDetector, lock);
int res = lookupDocument(trx, slice, result);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
// we found a document
return TRI_ERROR_NO_ERROR;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief processes a truncate operation (note: currently this only clears
/// the read-cache
////////////////////////////////////////////////////////////////////////////////
int LogicalCollection::truncate(Transaction* trx) {
return TRI_ERROR_NO_ERROR;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief inserts a document or edge into the collection
////////////////////////////////////////////////////////////////////////////////
int LogicalCollection::insert(Transaction* trx, VPackSlice const slice,
ManagedDocumentResult& result,
OperationOptions& options,
TRI_voc_tick_t& resultMarkerTick, bool lock) {
resultMarkerTick = 0;
VPackSlice fromSlice;
VPackSlice toSlice;
bool const isEdgeCollection = (_type == TRI_COL_TYPE_EDGE);
if (isEdgeCollection) {
// _from:
fromSlice = slice.get(StaticStrings::FromString);
if (!fromSlice.isString()) {
return TRI_ERROR_ARANGO_INVALID_EDGE_ATTRIBUTE;
}
VPackValueLength len;
char const* docId = fromSlice.getString(len);
size_t split;
if (!TRI_ValidateDocumentIdKeyGenerator(docId, static_cast<size_t>(len),
&split)) {
return TRI_ERROR_ARANGO_INVALID_EDGE_ATTRIBUTE;
}
// _to:
toSlice = slice.get(StaticStrings::ToString);
if (!toSlice.isString()) {
return TRI_ERROR_ARANGO_INVALID_EDGE_ATTRIBUTE;
}
docId = toSlice.getString(len);
if (!TRI_ValidateDocumentIdKeyGenerator(docId, static_cast<size_t>(len),
&split)) {
return TRI_ERROR_ARANGO_INVALID_EDGE_ATTRIBUTE;
}
}
TransactionBuilderLeaser builder(trx);
VPackSlice newSlice;
int res = TRI_ERROR_NO_ERROR;
if (options.recoveryMarker == nullptr) {
TIMER_START(TRANSACTION_NEW_OBJECT_FOR_INSERT);
res = newObjectForInsert(trx, slice, fromSlice, toSlice, isEdgeCollection,
*builder.get(), options.isRestore);
TIMER_STOP(TRANSACTION_NEW_OBJECT_FOR_INSERT);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
newSlice = builder->slice();
} else {
TRI_ASSERT(slice.isObject());
// we can get away with the fast hash function here, as key values are
// restricted to strings
newSlice = slice;
}
// create marker
MMFilesCrudMarker insertMarker(
TRI_DF_MARKER_VPACK_DOCUMENT,
TRI_MarkerIdTransaction(trx->getInternals()), 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;
}
MMFilesDocumentOperation operation(this,
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::extractRevFromDocument(newSlice);
VPackSlice doc(marker->vpack());
operation.setRevisions(DocumentDescriptor(),
DocumentDescriptor(revisionId, doc.begin()));
try {
insertRevision(revisionId, marker->vpack(), 0, 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;
}
{
// use lock?
bool const useDeadlockDetector =
(lock && !trx->isSingleOperationTransaction());
try {
arangodb::CollectionWriteLocker collectionLocker(this, 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) {
readRevision(trx, result, revisionId);
// store the tick that was used for writing the document
resultMarkerTick = operation.tick();
}
return res;
}
/// @brief updates a document or edge in a collection
int LogicalCollection::update(Transaction* trx, VPackSlice const newSlice,
ManagedDocumentResult& result,
OperationOptions& options,
TRI_voc_tick_t& resultMarkerTick, bool lock,
TRI_voc_rid_t& prevRev,
ManagedDocumentResult& previous) {
resultMarkerTick = 0;
if (!newSlice.isObject()) {
return TRI_ERROR_ARANGO_DOCUMENT_TYPE_INVALID;
}
prevRev = 0;
TRI_voc_rid_t revisionId = 0;
if (options.isRestore) {
VPackSlice oldRev = TRI_ExtractRevisionIdAsSlice(newSlice);
if (!oldRev.isString()) {
return TRI_ERROR_ARANGO_DOCUMENT_REV_BAD;
}
bool isOld;
VPackValueLength l;
char const* p = oldRev.getString(l);
revisionId = TRI_StringToRid(p, l, isOld, false);
if (isOld) {
// Do not tolerate old revision IDs
revisionId = TRI_HybridLogicalClock();
}
} else {
revisionId = TRI_HybridLogicalClock();
}
VPackSlice key = newSlice.get(StaticStrings::KeyString);
if (key.isNone()) {
return TRI_ERROR_ARANGO_DOCUMENT_HANDLE_BAD;
}
bool const isEdgeCollection = (type() == TRI_COL_TYPE_EDGE);
TRI_IF_FAILURE("UpdateDocumentNoLock") { return TRI_ERROR_DEBUG; }
bool const useDeadlockDetector =
(lock && !trx->isSingleOperationTransaction());
arangodb::CollectionWriteLocker collectionLocker(this, 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::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 = 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
TransactionBuilderLeaser 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(
_vocbase->name(),
trx->resolver()->getCollectionNameCluster(planId()), oldDoc,
builder->slice(), false)) {
return TRI_ERROR_CLUSTER_MUST_NOT_CHANGE_SHARDING_ATTRIBUTES;
}
}
}
// create marker
MMFilesCrudMarker updateMarker(
TRI_DF_MARKER_VPACK_DOCUMENT,
TRI_MarkerIdTransaction(trx->getInternals()), builder->slice());
MMFilesWalMarker const* marker;
if (options.recoveryMarker == nullptr) {
marker = &updateMarker;
} else {
marker = options.recoveryMarker;
}
VPackSlice const newDoc(marker->vpack());
MMFilesDocumentOperation operation(this,
TRI_VOC_DOCUMENT_OPERATION_UPDATE);
try {
insertRevision(revisionId, marker->vpack(), 0, 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 = 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 {
readRevision(trx, result, revisionId);
if (options.waitForSync) {
// store the tick that was used for writing the new document
resultMarkerTick = operation.tick();
}
}
return res;
}
/// @brief replaces a document or edge in a collection
int LogicalCollection::replace(Transaction* trx, VPackSlice const newSlice,
ManagedDocumentResult& result,
OperationOptions& options,
TRI_voc_tick_t& resultMarkerTick, bool lock,
TRI_voc_rid_t& prevRev,
ManagedDocumentResult& previous) {
resultMarkerTick = 0;
if (!newSlice.isObject()) {
return TRI_ERROR_ARANGO_DOCUMENT_TYPE_INVALID;
}
prevRev = 0;
VPackSlice fromSlice;
VPackSlice toSlice;
bool const isEdgeCollection = (type() == TRI_COL_TYPE_EDGE);
if (isEdgeCollection) {
fromSlice = newSlice.get(StaticStrings::FromString);
if (!fromSlice.isString()) {
return TRI_ERROR_ARANGO_INVALID_EDGE_ATTRIBUTE;
}
toSlice = newSlice.get(StaticStrings::ToString);
if (!toSlice.isString()) {
return TRI_ERROR_ARANGO_INVALID_EDGE_ATTRIBUTE;
}
}
TRI_voc_rid_t revisionId = 0;
if (options.isRestore) {
VPackSlice oldRev = TRI_ExtractRevisionIdAsSlice(newSlice);
if (!oldRev.isString()) {
return TRI_ERROR_ARANGO_DOCUMENT_REV_BAD;
}
bool isOld;
VPackValueLength l;
char const* p = oldRev.getString(l);
revisionId = TRI_StringToRid(p, l, isOld, false);
if (isOld) {
// Do not tolerate old revision ticks:
revisionId = TRI_HybridLogicalClock();
}
} else {
revisionId = TRI_HybridLogicalClock();
}
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(this, 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::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 = checkRevision(trx, expectedRev, prevRev);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
}
// merge old and new values
TransactionBuilderLeaser 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(
_vocbase->name(),
trx->resolver()->getCollectionNameCluster(_planId), oldDoc,
builder->slice(), false)) {
return TRI_ERROR_CLUSTER_MUST_NOT_CHANGE_SHARDING_ATTRIBUTES;
}
}
// create marker
MMFilesCrudMarker replaceMarker(
TRI_DF_MARKER_VPACK_DOCUMENT,
TRI_MarkerIdTransaction(trx->getInternals()), builder->slice());
MMFilesWalMarker const* marker;
if (options.recoveryMarker == nullptr) {
marker = &replaceMarker;
} else {
marker = options.recoveryMarker;
}
VPackSlice const newDoc(marker->vpack());
MMFilesDocumentOperation operation(
this, TRI_VOC_DOCUMENT_OPERATION_REPLACE);
try {
insertRevision(revisionId, marker->vpack(), 0, 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 = 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();
}
readRevision(trx, result, revisionId);
if (options.waitForSync) {
// store the tick that was used for writing the new document
resultMarkerTick = operation.tick();
}
}
return res;
}
/// @brief removes a document or edge
int LogicalCollection::remove(arangodb::Transaction* trx,
VPackSlice const slice, OperationOptions& options,
TRI_voc_tick_t& resultMarkerTick, bool lock,
TRI_voc_rid_t& prevRev,
ManagedDocumentResult& previous) {
resultMarkerTick = 0;
// create remove marker
TRI_voc_rid_t revisionId = 0;
if (options.isRestore) {
VPackSlice oldRev = TRI_ExtractRevisionIdAsSlice(slice);
if (!oldRev.isString()) {
revisionId = TRI_HybridLogicalClock();
} else {
bool isOld;
VPackValueLength l;
char const* p = oldRev.getString(l);
revisionId = TRI_StringToRid(p, l, isOld, false);
if (isOld) {
// Do not tolerate old revisions
revisionId = TRI_HybridLogicalClock();
}
}
} else {
revisionId = TRI_HybridLogicalClock();
}
TransactionBuilderLeaser builder(trx);
newObjectForRemove(trx, slice, TRI_RidToString(revisionId), *builder.get());
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, TRI_MarkerIdTransaction(trx->getInternals()),
builder->slice());
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(this,
TRI_VOC_DOCUMENT_OPERATION_REMOVE);
bool const useDeadlockDetector =
(lock && !trx->isSingleOperationTransaction());
arangodb::CollectionWriteLocker collectionLocker(this, 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();
prevRev = Transaction::extractRevFromDocument(VPackSlice(vpack));
// Check old revision:
if (!options.ignoreRevs && slice.isObject()) {
TRI_voc_rid_t expectedRev = TRI_ExtractRevisionId(slice);
int res = checkRevision(trx, expectedRev, prevRev);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
}
VPackSlice oldDoc(vpack);
TRI_voc_rid_t oldRevisionId = Transaction::extractRevFromDocument(oldDoc);
// 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 = deleteMMFilesPrimaryIndex(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 = TRI_AddOperationTransaction(trx->getInternals(), 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 LogicalCollection::remove(arangodb::Transaction* trx,
TRI_voc_rid_t oldRevisionId,
VPackSlice const oldDoc,
OperationOptions& options,
TRI_voc_tick_t& resultMarkerTick, bool lock) {
resultMarkerTick = 0;
TRI_voc_rid_t revisionId = TRI_HybridLogicalClock();
// create remove marker
TransactionBuilderLeaser builder(trx);
newObjectForRemove(trx, oldDoc, TRI_RidToString(revisionId), *builder.get());
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, TRI_MarkerIdTransaction(trx->getInternals()),
builder->slice());
MMFilesWalMarker const* marker = &removeMarker;
TRI_IF_FAILURE("RemoveDocumentNoLock") {
// test what happens if no lock can be acquired
return TRI_ERROR_DEBUG;
}
VPackSlice key = Transaction::extractKeyFromDocument(oldDoc);
TRI_ASSERT(!key.isNone());
MMFilesDocumentOperation operation(this,
TRI_VOC_DOCUMENT_OPERATION_REMOVE);
bool const useDeadlockDetector =
(lock && !trx->isSingleOperationTransaction());
arangodb::CollectionWriteLocker collectionLocker(this, 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 = deleteMMFilesPrimaryIndex(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 = TRI_AddOperationTransaction(trx->getInternals(), 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 rolls back a document operation
int LogicalCollection::rollbackOperation(arangodb::Transaction* trx,
TRI_voc_document_operation_e type,
TRI_voc_rid_t oldRevisionId,
VPackSlice const& oldDoc,
TRI_voc_rid_t newRevisionId,
VPackSlice const& newDoc) {
if (type == TRI_VOC_DOCUMENT_OPERATION_INSERT) {
TRI_ASSERT(oldRevisionId == 0);
TRI_ASSERT(oldDoc.isNone());
TRI_ASSERT(newRevisionId != 0);
TRI_ASSERT(!newDoc.isNone());
// ignore any errors we're getting from this
deleteMMFilesPrimaryIndex(trx, newRevisionId, newDoc);
deleteSecondaryIndexes(trx, newRevisionId, newDoc, true);
return TRI_ERROR_NO_ERROR;
}
if (type == TRI_VOC_DOCUMENT_OPERATION_UPDATE ||
type == TRI_VOC_DOCUMENT_OPERATION_REPLACE) {
TRI_ASSERT(oldRevisionId != 0);
TRI_ASSERT(!oldDoc.isNone());
TRI_ASSERT(newRevisionId != 0);
TRI_ASSERT(!newDoc.isNone());
// remove the current values from the indexes
deleteSecondaryIndexes(trx, newRevisionId, newDoc, true);
// re-insert old state
return insertSecondaryIndexes(trx, oldRevisionId, oldDoc, true);
}
if (type == TRI_VOC_DOCUMENT_OPERATION_REMOVE) {
// re-insert old revision
TRI_ASSERT(oldRevisionId != 0);
TRI_ASSERT(!oldDoc.isNone());
TRI_ASSERT(newRevisionId == 0);
TRI_ASSERT(newDoc.isNone());
int res = insertMMFilesPrimaryIndex(trx, oldRevisionId, oldDoc);
if (res == TRI_ERROR_NO_ERROR) {
res = insertSecondaryIndexes(trx, oldRevisionId, oldDoc, true);
} else {
LOG(ERR) << "error rolling back remove operation";
}
return res;
}
#ifdef ARANGODB_ENABLE_MAINTAINER_MODE
LOG(ERR) << "logic error. invalid operation type on rollback";
#endif
return TRI_ERROR_INTERNAL;
}
void LogicalCollection::sizeHint(Transaction* trx, int64_t hint) {
if (hint <= 0) {
return;
}
int res = primaryIndex()->resize(trx, static_cast<size_t>(hint * 1.1));
if (res != TRI_ERROR_NO_ERROR) {
return;
}
}
/// @brief initializes an index with all existing documents
int LogicalCollection::fillIndex(arangodb::Transaction* trx,
arangodb::Index* idx, bool skipPersistent) {
TRI_ASSERT(idx->type() != Index::IndexType::TRI_IDX_TYPE_PRIMARY_INDEX);
TRI_ASSERT(!ServerState::instance()->isCoordinator());
if (!useSecondaryIndexes()) {
return TRI_ERROR_NO_ERROR;
}
if (idx->isPersistent() && skipPersistent) {
return TRI_ERROR_NO_ERROR;
}
try {
size_t nrUsed = primaryIndex()->size();
auto indexPool =
application_features::ApplicationServer::getFeature<IndexThreadFeature>(
"IndexThread")
->getThreadPool();
int res;
if (indexPool != nullptr && idx->hasBatchInsert() && nrUsed > 256 * 1024 &&
_indexBuckets > 1) {
// use batch insert if there is an index pool,
// the collection has more than one index bucket
// and it contains a significant amount of documents
res = fillIndexBatch(trx, idx);
} else {
res = fillIndexSequential(trx, idx);
}
return res;
} catch (arangodb::basics::Exception const& ex) {
return ex.code();
} catch (std::bad_alloc const&) {
return TRI_ERROR_OUT_OF_MEMORY;
} catch (std::exception const& ex) {
LOG(WARN) << "caught exception while filling indexes: " << ex.what();
return TRI_ERROR_INTERNAL;
} catch (...) {
LOG(WARN) << "caught unknown exception while filling indexes";
return TRI_ERROR_INTERNAL;
}
}
/// @brief fill an index in batches
int LogicalCollection::fillIndexBatch(arangodb::Transaction* trx,
arangodb::Index* idx) {
TRI_ASSERT(!ServerState::instance()->isCoordinator());
auto indexPool =
application_features::ApplicationServer::getFeature<IndexThreadFeature>(
"IndexThread")
->getThreadPool();
double start = TRI_microtime();
LOG_TOPIC(TRACE, Logger::PERFORMANCE)
<< "fill-index-batch { collection: " << _vocbase->name() << "/" << name()
<< " }, " << idx->context() << ", threads: " << indexPool->numThreads()
<< ", buckets: " << indexBuckets();
// give the index a size hint
auto primaryIndex = this->primaryIndex();
auto nrUsed = primaryIndex->size();
idx->sizeHint(trx, nrUsed);
// process documents a million at a time
size_t blockSize = 1024 * 1024 * 1;
if (nrUsed < blockSize) {
blockSize = nrUsed;
}
if (blockSize == 0) {
blockSize = 1;
}
int res = TRI_ERROR_NO_ERROR;
ManagedDocumentResult mmdr;
std::vector<std::pair<TRI_voc_rid_t, VPackSlice>> documents;
documents.reserve(blockSize);
if (nrUsed > 0) {
arangodb::basics::BucketPosition position;
uint64_t total = 0;
while (true) {
MMFilesSimpleIndexElement element =
primaryIndex->lookupSequential(trx, position, total);
if (!element) {
break;
}
TRI_voc_rid_t revisionId = element.revisionId();
if (readRevision(trx, mmdr, revisionId)) {
uint8_t const* vpack = mmdr.vpack();
TRI_ASSERT(vpack != nullptr);
documents.emplace_back(std::make_pair(revisionId, VPackSlice(vpack)));
if (documents.size() == blockSize) {
res = idx->batchInsert(trx, documents, indexPool->numThreads());
documents.clear();
// some error occurred
if (res != TRI_ERROR_NO_ERROR) {
break;
}
}
}
}
}
// process the remainder of the documents
if (res == TRI_ERROR_NO_ERROR && !documents.empty()) {
res = idx->batchInsert(trx, documents, indexPool->numThreads());
}
LOG_TOPIC(TRACE, Logger::PERFORMANCE)
<< "[timer] " << Logger::FIXED(TRI_microtime() - start)
<< " s, fill-index-batch { collection: " << _vocbase->name() << "/"
<< name() << " }, " << idx->context()
<< ", threads: " << indexPool->numThreads()
<< ", buckets: " << indexBuckets();
return res;
}
/// @brief fill an index sequentially
int LogicalCollection::fillIndexSequential(arangodb::Transaction* trx,
arangodb::Index* idx) {
TRI_ASSERT(!ServerState::instance()->isCoordinator());
double start = TRI_microtime();
LOG_TOPIC(TRACE, Logger::PERFORMANCE)
<< "fill-index-sequential { collection: " << _vocbase->name() << "/"
<< name() << " }, " << idx->context() << ", buckets: " << indexBuckets();
// give the index a size hint
auto primaryIndex = this->primaryIndex();
size_t nrUsed = primaryIndex->size();
TRI_ASSERT(idx->type() != Index::IndexType::TRI_IDX_TYPE_PRIMARY_INDEX);
idx->sizeHint(trx, nrUsed);
if (nrUsed > 0) {
#ifdef ARANGODB_ENABLE_MAINTAINER_MODE
static int const LoopSize = 10000;
int counter = 0;
int loops = 0;
#endif
arangodb::basics::BucketPosition position;
uint64_t total = 0;
ManagedDocumentResult result;
while (true) {
MMFilesSimpleIndexElement element =
primaryIndex->lookupSequential(trx, position, total);
if (!element) {
break;
}
TRI_voc_rid_t revisionId = element.revisionId();
if (readRevision(trx, result, revisionId)) {
uint8_t const* vpack = result.vpack();
TRI_ASSERT(vpack != nullptr);
int res = idx->insert(trx, revisionId, VPackSlice(vpack), false);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
} else {
return TRI_ERROR_ARANGO_DOCUMENT_NOT_FOUND; // oops
}
#ifdef ARANGODB_ENABLE_MAINTAINER_MODE
if (++counter == LoopSize) {
counter = 0;
++loops;
LOG(TRACE) << "indexed " << (LoopSize * loops)
<< " documents of collection " << cid();
}
#endif
}
}
LOG_TOPIC(TRACE, Logger::PERFORMANCE)
<< "[timer] " << Logger::FIXED(TRI_microtime() - start)
<< " s, fill-index-sequential { collection: " << _vocbase->name() << "/"
<< name() << " }, " << idx->context() << ", buckets: " << indexBuckets();
return TRI_ERROR_NO_ERROR;
}
/// @brief read unlocks a collection
int LogicalCollection::endRead(bool useDeadlockDetector) {
if (arangodb::Transaction::_makeNolockHeaders != nullptr) {
auto it = arangodb::Transaction::_makeNolockHeaders->find(name());
if (it != arangodb::Transaction::_makeNolockHeaders->end()) {
// do not lock by command
// LOCKING-DEBUG
// std::cout << "EndRead blocked: " << _name << std::endl;
return TRI_ERROR_NO_ERROR;
}
}
if (useDeadlockDetector) {
// unregister reader
try {
_vocbase->_deadlockDetector.unsetReader(this);
} catch (...) {
}
}
// LOCKING-DEBUG
// std::cout << "EndRead: " << _name << std::endl;
_idxLock.unlockRead();
return TRI_ERROR_NO_ERROR;
}
/// @brief write unlocks a collection
int LogicalCollection::endWrite(bool useDeadlockDetector) {
if (arangodb::Transaction::_makeNolockHeaders != nullptr) {
auto it = arangodb::Transaction::_makeNolockHeaders->find(name());
if (it != arangodb::Transaction::_makeNolockHeaders->end()) {
// do not lock by command
// LOCKING-DEBUG
// std::cout << "EndWrite blocked: " << _name <<
// std::endl;
return TRI_ERROR_NO_ERROR;
}
}
if (useDeadlockDetector) {
// unregister writer
try {
_vocbase->_deadlockDetector.unsetWriter(this);
} catch (...) {
// must go on here to unlock the lock
}
}
// LOCKING-DEBUG
// std::cout << "EndWrite: " << _name << std::endl;
_idxLock.unlockWrite();
return TRI_ERROR_NO_ERROR;
}
/// @brief read locks a collection, with a timeout (in µseconds)
int LogicalCollection::beginReadTimed(bool useDeadlockDetector,
double timeout) {
if (arangodb::Transaction::_makeNolockHeaders != nullptr) {
auto it = arangodb::Transaction::_makeNolockHeaders->find(name());
if (it != arangodb::Transaction::_makeNolockHeaders->end()) {
// do not lock by command
// LOCKING-DEBUG
// std::cout << "BeginReadTimed blocked: " << _name <<
// std::endl;
return TRI_ERROR_NO_ERROR;
}
}
// LOCKING-DEBUG
// std::cout << "BeginReadTimed: " << _name << std::endl;
int iterations = 0;
bool wasBlocked = false;
double end = 0.0;
while (true) {
TRY_READ_LOCKER(locker, _idxLock);
if (locker.isLocked()) {
// when we are here, we've got the read lock
if (useDeadlockDetector) {
_vocbase->_deadlockDetector.addReader(this, wasBlocked);
}
// keep lock and exit loop
locker.steal();
return TRI_ERROR_NO_ERROR;
}
if (useDeadlockDetector) {
try {
if (!wasBlocked) {
// insert reader
wasBlocked = true;
if (_vocbase->_deadlockDetector.setReaderBlocked(this) ==
TRI_ERROR_DEADLOCK) {
// deadlock
LOG(TRACE) << "deadlock detected while trying to acquire read-lock "
"on collection '"
<< name() << "'";
return TRI_ERROR_DEADLOCK;
}
LOG(TRACE) << "waiting for read-lock on collection '" << name()
<< "'";
// fall-through intentional
} else if (++iterations >= 5) {
// periodically check for deadlocks
TRI_ASSERT(wasBlocked);
iterations = 0;
if (_vocbase->_deadlockDetector.detectDeadlock(this, false) ==
TRI_ERROR_DEADLOCK) {
// deadlock
_vocbase->_deadlockDetector.unsetReaderBlocked(this);
LOG(TRACE) << "deadlock detected while trying to acquire read-lock "
"on collection '"
<< name() << "'";
return TRI_ERROR_DEADLOCK;
}
}
} catch (...) {
// clean up!
if (wasBlocked) {
_vocbase->_deadlockDetector.unsetReaderBlocked(this);
}
// always exit
return TRI_ERROR_OUT_OF_MEMORY;
}
}
if (end == 0.0) {
// set end time for lock waiting
if (timeout <= 0.0) {
timeout = 15.0 * 60.0;
}
end = TRI_microtime() + timeout;
TRI_ASSERT(end > 0.0);
}
std::this_thread::yield();
TRI_ASSERT(end > 0.0);
if (TRI_microtime() > end) {
if (useDeadlockDetector) {
_vocbase->_deadlockDetector.unsetReaderBlocked(this);
}
LOG(TRACE) << "timed out waiting for read-lock on collection '" << name()
<< "'";
return TRI_ERROR_LOCK_TIMEOUT;
}
}
}
/// @brief write locks a collection, with a timeout
int LogicalCollection::beginWriteTimed(bool useDeadlockDetector,
double timeout) {
if (arangodb::Transaction::_makeNolockHeaders != nullptr) {
auto it = arangodb::Transaction::_makeNolockHeaders->find(name());
if (it != arangodb::Transaction::_makeNolockHeaders->end()) {
// do not lock by command
// LOCKING-DEBUG
// std::cout << "BeginWriteTimed blocked: " << _name <<
// std::endl;
return TRI_ERROR_NO_ERROR;
}
}
// LOCKING-DEBUG
// std::cout << "BeginWriteTimed: " << document->_info._name << std::endl;
int iterations = 0;
bool wasBlocked = false;
double end = 0.0;
while (true) {
TRY_WRITE_LOCKER(locker, _idxLock);
if (locker.isLocked()) {
// register writer
if (useDeadlockDetector) {
_vocbase->_deadlockDetector.addWriter(this, wasBlocked);
}
// keep lock and exit loop
locker.steal();
return TRI_ERROR_NO_ERROR;
}
if (useDeadlockDetector) {
try {
if (!wasBlocked) {
// insert writer
wasBlocked = true;
if (_vocbase->_deadlockDetector.setWriterBlocked(this) ==
TRI_ERROR_DEADLOCK) {
// deadlock
LOG(TRACE) << "deadlock detected while trying to acquire "
"write-lock on collection '"
<< name() << "'";
return TRI_ERROR_DEADLOCK;
}
LOG(TRACE) << "waiting for write-lock on collection '" << name()
<< "'";
} else if (++iterations >= 5) {
// periodically check for deadlocks
TRI_ASSERT(wasBlocked);
iterations = 0;
if (_vocbase->_deadlockDetector.detectDeadlock(this, true) ==
TRI_ERROR_DEADLOCK) {
// deadlock
_vocbase->_deadlockDetector.unsetWriterBlocked(this);
LOG(TRACE) << "deadlock detected while trying to acquire "
"write-lock on collection '"
<< name() << "'";
return TRI_ERROR_DEADLOCK;
}
}
} catch (...) {
// clean up!
if (wasBlocked) {
_vocbase->_deadlockDetector.unsetWriterBlocked(this);
}
// always exit
return TRI_ERROR_OUT_OF_MEMORY;
}
}
std::this_thread::yield();
if (end == 0.0) {
// set end time for lock waiting
if (timeout <= 0.0) {
timeout = 15.0 * 60.0;
}
end = TRI_microtime() + timeout;
TRI_ASSERT(end > 0.0);
}
std::this_thread::yield();
TRI_ASSERT(end > 0.0);
if (TRI_microtime() > end) {
if (useDeadlockDetector) {
_vocbase->_deadlockDetector.unsetWriterBlocked(this);
}
LOG(TRACE) << "timed out waiting for write-lock on collection '" << name()
<< "'";
return TRI_ERROR_LOCK_TIMEOUT;
}
}
}
/// @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 LogicalCollection::lookupDocument(arangodb::Transaction* trx,
VPackSlice const key,
ManagedDocumentResult& result) {
if (!key.isString()) {
return TRI_ERROR_ARANGO_DOCUMENT_KEY_BAD;
}
MMFilesSimpleIndexElement element = primaryIndex()->lookupKey(trx, key, result);
if (element) {
readRevision(trx, result, element.revisionId());
return TRI_ERROR_NO_ERROR;
}
return TRI_ERROR_ARANGO_DOCUMENT_NOT_FOUND;
}
/// @brief checks the revision of a document
int LogicalCollection::checkRevision(Transaction* trx, TRI_voc_rid_t expected,
TRI_voc_rid_t found) {
if (expected != 0 && found != expected) {
return TRI_ERROR_ARANGO_CONFLICT;
}
return TRI_ERROR_NO_ERROR;
}
/// @brief updates an existing document, low level worker
/// the caller must make sure the write lock on the collection is held
int LogicalCollection::updateDocument(
arangodb::Transaction* trx, TRI_voc_rid_t oldRevisionId,
VPackSlice const& oldDoc, TRI_voc_rid_t newRevisionId,
VPackSlice const& newDoc, MMFilesDocumentOperation& operation,
MMFilesWalMarker const* marker, bool& waitForSync) {
// remove old document from secondary indexes
// (it will stay in the primary index as the key won't change)
int res = deleteSecondaryIndexes(trx, oldRevisionId, oldDoc, false);
if (res != TRI_ERROR_NO_ERROR) {
// re-enter the document in case of failure, ignore errors during rollback
insertSecondaryIndexes(trx, oldRevisionId, oldDoc, true);
return res;
}
// insert new document into secondary indexes
res = insertSecondaryIndexes(trx, newRevisionId, newDoc, false);
if (res != TRI_ERROR_NO_ERROR) {
// rollback
deleteSecondaryIndexes(trx, newRevisionId, newDoc, true);
insertSecondaryIndexes(trx, oldRevisionId, oldDoc, true);
return res;
}
// update the index element (primary index only - other index have been
// adjusted)
VPackSlice keySlice(Transaction::extractKeyFromDocument(newDoc));
MMFilesSimpleIndexElement* element = primaryIndex()->lookupKeyRef(trx, keySlice);
if (element != nullptr && element->revisionId() != 0) {
element->updateRevisionId(
newRevisionId,
static_cast<uint32_t>(keySlice.begin() - newDoc.begin()));
}
operation.indexed();
if (oldRevisionId != newRevisionId) {
try {
removeRevision(oldRevisionId, true);
} catch (...) {
}
}
TRI_IF_FAILURE("UpdateDocumentNoOperation") { return TRI_ERROR_DEBUG; }
TRI_IF_FAILURE("UpdateDocumentNoOperationExcept") {
THROW_ARANGO_EXCEPTION(TRI_ERROR_DEBUG);
}
return TRI_AddOperationTransaction(trx->getInternals(), newRevisionId,
operation, marker, waitForSync);
}
/// @brief insert a document, low level worker
/// the caller must make sure the write lock on the collection is held
int LogicalCollection::insertDocument(
arangodb::Transaction* trx, TRI_voc_rid_t revisionId, VPackSlice const& doc,
MMFilesDocumentOperation& operation,
MMFilesWalMarker const* marker, bool& waitForSync) {
// insert into primary index first
int res = insertMMFilesPrimaryIndex(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);
deleteMMFilesPrimaryIndex(trx, revisionId, doc);
return res;
}
operation.indexed();
TRI_IF_FAILURE("InsertDocumentNoOperation") { return TRI_ERROR_DEBUG; }
TRI_IF_FAILURE("InsertDocumentNoOperationExcept") {
THROW_ARANGO_EXCEPTION(TRI_ERROR_DEBUG);
}
return TRI_AddOperationTransaction(trx->getInternals(), revisionId, operation,
marker, waitForSync);
}
/// @brief creates a new entry in the primary index
int LogicalCollection::insertMMFilesPrimaryIndex(arangodb::Transaction* trx,
TRI_voc_rid_t revisionId,
VPackSlice const& doc) {
TRI_IF_FAILURE("InsertPrimaryIndex") { return TRI_ERROR_DEBUG; }
// insert into primary index
return primaryIndex()->insertKey(trx, revisionId, doc);
}
/// @brief deletes an entry from the primary index
int LogicalCollection::deleteMMFilesPrimaryIndex(arangodb::Transaction* trx,
TRI_voc_rid_t revisionId,
VPackSlice const& doc) {
TRI_IF_FAILURE("DeletePrimaryIndex") { return TRI_ERROR_DEBUG; }
return primaryIndex()->removeKey(trx, revisionId, doc);
}
/// @brief creates a new entry in the secondary indexes
int LogicalCollection::insertSecondaryIndexes(arangodb::Transaction* 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 = useSecondaryIndexes();
if (!useSecondary && _persistentIndexes == 0) {
return TRI_ERROR_NO_ERROR;
}
int result = TRI_ERROR_NO_ERROR;
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 LogicalCollection::deleteSecondaryIndexes(arangodb::Transaction* 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 = useSecondaryIndexes();
if (!useSecondary && _persistentIndexes == 0) {
return TRI_ERROR_NO_ERROR;
}
TRI_IF_FAILURE("DeleteSecondaryIndexes") { return TRI_ERROR_DEBUG; }
int result = TRI_ERROR_NO_ERROR;
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 new object for insert, computes the hash of the key
int LogicalCollection::newObjectForInsert(
Transaction* trx, VPackSlice const& value, VPackSlice const& fromSlice,
VPackSlice const& toSlice, bool isEdgeCollection, VPackBuilder& builder,
bool isRestore) {
TRI_voc_tick_t newRev = 0;
builder.openObject();
// add system attributes first, in this order:
// _key, _id, _from, _to, _rev
// _key
VPackSlice s = value.get(StaticStrings::KeyString);
if (s.isNone()) {
TRI_ASSERT(!isRestore); // need key in case of restore
newRev = TRI_HybridLogicalClock();
std::string keyString = _keyGenerator->generate(TRI_NewTickServer());
if (keyString.empty()) {
return TRI_ERROR_ARANGO_OUT_OF_KEYS;
}
uint8_t* where =
builder.add(StaticStrings::KeyString, VPackValue(keyString));
s = VPackSlice(where); // point to newly built value, the string
} else if (!s.isString()) {
return TRI_ERROR_ARANGO_DOCUMENT_KEY_BAD;
} else {
std::string keyString = s.copyString();
int res = _keyGenerator->validate(keyString, isRestore);
if (res != TRI_ERROR_NO_ERROR) {
return res;
}
builder.add(StaticStrings::KeyString, s);
}
// _id
uint8_t* p = builder.add(StaticStrings::IdString,
VPackValuePair(9ULL, VPackValueType::Custom));
*p++ = 0xf3; // custom type for _id
if (ServerState::isDBServer(trx->serverRole()) && !_isSystem) {
// db server in cluster, note: the local collections _statistics,
// _statisticsRaw and _statistics15 (which are the only system collections)
// must not be treated as shards but as local collections
MMFilesDatafileHelper::StoreNumber<uint64_t>(p, _planId, sizeof(uint64_t));
} else {
// local server
MMFilesDatafileHelper::StoreNumber<uint64_t>(p, _cid, sizeof(uint64_t));
}
// _from and _to
if (isEdgeCollection) {
TRI_ASSERT(!fromSlice.isNone());
TRI_ASSERT(!toSlice.isNone());
builder.add(StaticStrings::FromString, fromSlice);
builder.add(StaticStrings::ToString, toSlice);
}
// _rev
std::string newRevSt;
if (isRestore) {
VPackSlice oldRev = TRI_ExtractRevisionIdAsSlice(value);
if (!oldRev.isString()) {
return TRI_ERROR_ARANGO_DOCUMENT_REV_BAD;
}
bool isOld;
VPackValueLength l;
char const* p = oldRev.getString(l);
TRI_voc_rid_t oldRevision = TRI_StringToRid(p, l, isOld, false);
if (isOld) {
oldRevision = TRI_HybridLogicalClock();
}
newRevSt = TRI_RidToString(oldRevision);
} else {
if (newRev == 0) {
newRev = TRI_HybridLogicalClock();
}
newRevSt = TRI_RidToString(newRev);
}
builder.add(StaticStrings::RevString, VPackValue(newRevSt));
// add other attributes after the system attributes
TRI_SanitizeObjectWithEdges(value, builder);
builder.close();
return TRI_ERROR_NO_ERROR;
}
/// @brief new object for replace, oldValue must have _key and _id correctly set
void LogicalCollection::newObjectForReplace(
Transaction* trx, VPackSlice const& oldValue, VPackSlice const& newValue,
VPackSlice const& fromSlice, VPackSlice const& toSlice,
bool isEdgeCollection, std::string const& rev, VPackBuilder& builder) {
builder.openObject();
// add system attributes first, in this order:
// _key, _id, _from, _to, _rev
// _key
VPackSlice s = oldValue.get(StaticStrings::KeyString);
TRI_ASSERT(!s.isNone());
builder.add(StaticStrings::KeyString, s);
// _id
s = oldValue.get(StaticStrings::IdString);
TRI_ASSERT(!s.isNone());
builder.add(StaticStrings::IdString, s);
// _from and _to here
if (isEdgeCollection) {
TRI_ASSERT(!fromSlice.isNone());
TRI_ASSERT(!toSlice.isNone());
builder.add(StaticStrings::FromString, fromSlice);
builder.add(StaticStrings::ToString, toSlice);
}
// _rev
builder.add(StaticStrings::RevString, VPackValue(rev));
// add other attributes after the system attributes
TRI_SanitizeObjectWithEdges(newValue, builder);
builder.close();
}
/// @brief merge two objects for update, oldValue must have correctly set
/// _key and _id attributes
void LogicalCollection::mergeObjectsForUpdate(
arangodb::Transaction* trx, VPackSlice const& oldValue,
VPackSlice const& newValue, bool isEdgeCollection, std::string const& rev,
bool mergeObjects, bool keepNull, VPackBuilder& b) {
b.openObject();
VPackSlice keySlice = oldValue.get(StaticStrings::KeyString);
VPackSlice idSlice = oldValue.get(StaticStrings::IdString);
TRI_ASSERT(!keySlice.isNone());
TRI_ASSERT(!idSlice.isNone());
// Find the attributes in the newValue object:
VPackSlice fromSlice;
VPackSlice toSlice;
std::unordered_map<std::string, VPackSlice> newValues;
{
VPackObjectIterator it(newValue, true);
while (it.valid()) {
std::string key = it.key().copyString();
if (!key.empty() && key[0] == '_' &&
(key == StaticStrings::KeyString || key == StaticStrings::IdString ||
key == StaticStrings::RevString ||
key == StaticStrings::FromString ||
key == StaticStrings::ToString)) {
// note _from and _to and ignore _id, _key and _rev
if (key == StaticStrings::FromString) {
fromSlice = it.value();
} else if (key == StaticStrings::ToString) {
toSlice = it.value();
} // else do nothing
} else {
// regular attribute
newValues.emplace(std::move(key), it.value());
}
it.next();
}
}
if (isEdgeCollection) {
if (fromSlice.isNone()) {
fromSlice = oldValue.get(StaticStrings::FromString);
}
if (toSlice.isNone()) {
toSlice = oldValue.get(StaticStrings::ToString);
}
}
// add system attributes first, in this order:
// _key, _id, _from, _to, _rev
// _key
b.add(StaticStrings::KeyString, keySlice);
// _id
b.add(StaticStrings::IdString, idSlice);
// _from, _to
if (isEdgeCollection) {
TRI_ASSERT(!fromSlice.isNone());
TRI_ASSERT(!toSlice.isNone());
b.add(StaticStrings::FromString, fromSlice);
b.add(StaticStrings::ToString, toSlice);
}
// _rev
b.add(StaticStrings::RevString, VPackValue(rev));
// add other attributes after the system attributes
{
VPackObjectIterator it(oldValue, true);
while (it.valid()) {
std::string key = it.key().copyString();
// exclude system attributes in old value now
if (!key.empty() && key[0] == '_' &&
(key == StaticStrings::KeyString || key == StaticStrings::IdString ||
key == StaticStrings::RevString ||
key == StaticStrings::FromString ||
key == StaticStrings::ToString)) {
it.next();
continue;
}
auto found = newValues.find(key);
if (found == newValues.end()) {
// use old value
b.add(key, it.value());
} else if (mergeObjects && it.value().isObject() &&
(*found).second.isObject()) {
// merge both values
auto& value = (*found).second;
if (keepNull || (!value.isNone() && !value.isNull())) {
VPackBuilder sub =
VPackCollection::merge(it.value(), value, true, !keepNull);
b.add(key, sub.slice());
}
// clear the value in the map so its not added again
(*found).second = VPackSlice();
} else {
// use new value
auto& value = (*found).second;
if (keepNull || (!value.isNone() && !value.isNull())) {
b.add(key, value);
}
// clear the value in the map so its not added again
(*found).second = VPackSlice();
}
it.next();
}
}
// add remaining values that were only in new object
for (auto const& it : newValues) {
VPackSlice const& s = it.second;
if (s.isNone()) {
continue;
}
if (!keepNull && s.isNull()) {
continue;
}
b.add(it.first, s);
}
b.close();
}
/// @brief new object for remove, must have _key set
void LogicalCollection::newObjectForRemove(Transaction* trx,
VPackSlice const& oldValue,
std::string const& rev,
VPackBuilder& builder) {
// create an object consisting of _key and _rev (in this order)
builder.openObject();
if (oldValue.isString()) {
builder.add(StaticStrings::KeyString, oldValue);
} else {
VPackSlice s = oldValue.get(StaticStrings::KeyString);
TRI_ASSERT(s.isString());
builder.add(StaticStrings::KeyString, s);
}
builder.add(StaticStrings::RevString, VPackValue(rev));
builder.close();
}
bool LogicalCollection::readRevision(Transaction* trx,
ManagedDocumentResult& result,
TRI_voc_rid_t revisionId) {
uint8_t const* vpack = getPhysical()->lookupRevisionVPack(revisionId);
if (vpack != nullptr) {
result.addExisting(vpack, revisionId);
return true;
}
return false;
}
bool LogicalCollection::readRevisionConditional(Transaction* trx,
ManagedDocumentResult& result,
TRI_voc_rid_t revisionId,
TRI_voc_tick_t maxTick,
bool excludeWal) {
TRI_ASSERT(revisionId != 0);
uint8_t const* vpack = getPhysical()->lookupRevisionVPackConditional(revisionId, maxTick, excludeWal);
if (vpack != nullptr) {
result.addExisting(vpack, revisionId);
return true;
}
return false;
}
// TODO ONLY TEMP wrapper
bool LogicalCollection::readDocument(arangodb::Transaction* trx, ManagedDocumentResult& result, DocumentIdentifierToken const& token) {
// TODO This only works for MMFiles Engine. Has to be moved => StorageEngine
auto tkn = static_cast<MMFilesToken const*>(&token);
return readRevision(trx, result, tkn->revisionId());
}
void LogicalCollection::insertRevision(TRI_voc_rid_t revisionId,
uint8_t const* dataptr,
TRI_voc_fid_t fid, bool isInWal) {
// note: there is no need to insert into the cache here as the data points to
// temporary storage
getPhysical()->insertRevision(revisionId, dataptr, fid, isInWal, true);
}
void LogicalCollection::updateRevision(TRI_voc_rid_t revisionId,
uint8_t const* dataptr,
TRI_voc_fid_t fid, bool isInWal) {
// note: there is no need to modify the cache entry here as insertRevision has
// not inserted the document into the cache
getPhysical()->updateRevision(revisionId, dataptr, fid, isInWal);
}
bool LogicalCollection::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) {
return getPhysical()->updateRevisionConditional(revisionId, oldPosition,
newPosition, newFid, isInWal);
}
void LogicalCollection::removeRevision(TRI_voc_rid_t revisionId,
bool updateStats) {
// and remove from storage engine
getPhysical()->removeRevision(revisionId, updateStats);
}
/// @brief a method to skip certain documents in AQL write operations,
/// this is only used in the enterprise edition for smart graphs
#ifndef USE_ENTERPRISE
bool LogicalCollection::skipForAqlWrite(arangodb::velocypack::Slice document,
std::string const& key) const {
return false;
}
#endif
bool LogicalCollection::isSatellite() const { return _replicationFactor == 0; }
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