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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
/// @author Daniel H. Larkin
////////////////////////////////////////////////////////////////////////////////
#include "LogicalCollection.h"
#include "Aql/QueryCache.h"
#include "Basics/Mutex.h"
#include "Basics/ReadLocker.h"
#include "Basics/VelocyPackHelper.h"
#include "Basics/WriteLocker.h"
#include "Basics/fasthash.h"
#include "Cluster/ClusterMethods.h"
#include "Cluster/FollowerInfo.h"
#include "Cluster/ServerState.h"
#include "RestServer/DatabaseFeature.h"
#include "Sharding/ShardingInfo.h"
#include "StorageEngine/EngineSelectorFeature.h"
#include "StorageEngine/PhysicalCollection.h"
#include "StorageEngine/StorageEngine.h"
#include "Transaction/Helpers.h"
#include "Transaction/StandaloneContext.h"
#include "Utils/CollectionNameResolver.h"
#include "Utils/SingleCollectionTransaction.h"
#include "VocBase/KeyGenerator.h"
#include "VocBase/ManagedDocumentResult.h"
#include <velocypack/Collection.h>
#include <velocypack/StringRef.h>
#include <velocypack/velocypack-aliases.h>
using namespace arangodb;
using Helper = arangodb::basics::VelocyPackHelper;
namespace {
static std::string translateStatus(TRI_vocbase_col_status_e status) {
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";
}
}
std::string readGloballyUniqueId(arangodb::velocypack::Slice info) {
static const std::string empty;
auto guid = arangodb::basics::VelocyPackHelper::getStringValue(info, arangodb::StaticStrings::DataSourceGuid,
empty);
if (!guid.empty()) {
return guid;
}
auto version = arangodb::basics::VelocyPackHelper::readNumericValue<uint32_t>(
info, "version", LogicalCollection::currentVersion());
// predictable UUID for legacy collections
if (version < LogicalCollection::CollectionVersions::VERSION_33 && info.isObject()) {
return arangodb::basics::VelocyPackHelper::getStringValue(info, arangodb::StaticStrings::DataSourceName,
empty);
}
return empty;
}
std::string readStringValue(arangodb::velocypack::Slice info,
std::string const& name, std::string const& def) {
return info.isObject() ? Helper::getStringValue(info, name, def) : def;
}
arangodb::LogicalDataSource::Type const& readType(arangodb::velocypack::Slice info,
std::string const& key,
TRI_col_type_e def) {
static const auto& document = arangodb::LogicalDataSource::Type::emplace(
arangodb::velocypack::StringRef("document"));
static const auto& edge =
arangodb::LogicalDataSource::Type::emplace(arangodb::velocypack::StringRef("edge"));
// arbitrary system-global value for unknown
static const auto& unknown =
arangodb::LogicalDataSource::Type::emplace(arangodb::velocypack::StringRef(""));
switch (Helper::readNumericValue<TRI_col_type_e, int>(info, key, def)) {
case TRI_col_type_e::TRI_COL_TYPE_DOCUMENT:
return document;
case TRI_col_type_e::TRI_COL_TYPE_EDGE:
return edge;
default:
return unknown;
}
}
} // namespace
// The Slice contains the part of the plan that
// is relevant for this collection.
LogicalCollection::LogicalCollection(TRI_vocbase_t& vocbase, VPackSlice const& info,
bool isAStub, uint64_t planVersion /*= 0*/
)
: LogicalDataSource(
LogicalCollection::category(),
::readType(info, StaticStrings::DataSourceType, TRI_COL_TYPE_UNKNOWN),
vocbase, arangodb::basics::VelocyPackHelper::extractIdValue(info),
::readGloballyUniqueId(info),
arangodb::basics::VelocyPackHelper::stringUInt64(info.get(StaticStrings::DataSourcePlanId)),
::readStringValue(info, StaticStrings::DataSourceName, ""), planVersion,
TRI_vocbase_t::IsSystemName(
::readStringValue(info, StaticStrings::DataSourceName, "")) &&
Helper::readBooleanValue(info, StaticStrings::DataSourceSystem, false),
Helper::readBooleanValue(info, StaticStrings::DataSourceDeleted, false)),
_version(Helper::readNumericValue<uint32_t>(info, "version", currentVersion())),
_internalVersion(0),
_type(Helper::readNumericValue<TRI_col_type_e, int>(info, StaticStrings::DataSourceType,
TRI_COL_TYPE_UNKNOWN)),
_status(Helper::readNumericValue<TRI_vocbase_col_status_e, int>(
info, "status", TRI_VOC_COL_STATUS_CORRUPTED)),
_isAStub(isAStub),
_isSmart(Helper::readBooleanValue(info, StaticStrings::IsSmart, false)),
_waitForSync(Helper::readBooleanValue(info, StaticStrings::WaitForSyncString, false)),
_allowUserKeys(Helper::readBooleanValue(info, "allowUserKeys", true)),
#ifdef USE_ENTERPRISE
_smartJoinAttribute(::readStringValue(info, StaticStrings::SmartJoinAttribute, "")),
#endif
_physical(EngineSelectorFeature::ENGINE->createPhysicalCollection(*this, info)) {
TRI_ASSERT(info.isObject());
if (!TRI_vocbase_t::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);
}
TRI_ASSERT(!guid().empty());
// update server's tick value
TRI_UpdateTickServer(static_cast<TRI_voc_tick_t>(id()));
// add keyOptions from slice
VPackSlice keyOpts = info.get("keyOptions");
_keyGenerator.reset(KeyGenerator::factory(keyOpts));
if (!keyOpts.isNone()) {
_keyOptions = VPackBuilder::clone(keyOpts).steal();
}
_sharding = std::make_unique<ShardingInfo>(info, this);
#ifdef USE_ENTERPRISE
if (ServerState::instance()->isCoordinator() ||
ServerState::instance()->isDBServer()) {
if (!info.get(StaticStrings::SmartJoinAttribute).isNone() &&
!hasSmartJoinAttribute()) {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INVALID_SMART_JOIN_ATTRIBUTE,
"smartJoinAttribute must contain a string attribute name");
}
if (hasSmartJoinAttribute()) {
auto const& sk = _sharding->shardKeys();
TRI_ASSERT(!sk.empty());
if (sk.size() != 1) {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INVALID_SMART_JOIN_ATTRIBUTE,
"smartJoinAttribute can only be used for collections with a single shardKey value");
}
TRI_ASSERT(!sk.front().empty());
if (sk.front().back() != ':') {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INVALID_SMART_JOIN_ATTRIBUTE,
std::string("smartJoinAttribute can only be used for shardKeys ending on ':', got '") + sk.front() + "'");
}
if (_isSmart) {
if (_type == TRI_COL_TYPE_EDGE) {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INVALID_SMART_JOIN_ATTRIBUTE,
"cannot use smartJoinAttribute on a smart edge collection");
} else if (_type == TRI_COL_TYPE_DOCUMENT) {
VPackSlice sga = info.get(StaticStrings::GraphSmartGraphAttribute);
if (sga.isString() && sga.copyString() != info.get(StaticStrings::SmartJoinAttribute).copyString()) {
THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_INVALID_SMART_JOIN_ATTRIBUTE,
"smartJoinAttribute must be equal to smartGraphAttribute");
}
}
}
}
}
#else
// whatever we got passed in, in a non-enterprise build, we just ignore
// any specification for the smartJoinAttribute
_smartJoinAttribute.clear();
#endif
if (ServerState::instance()->isDBServer() ||
!ServerState::instance()->isRunningInCluster()) {
_followers.reset(new FollowerInfo(this));
}
TRI_ASSERT(_physical != nullptr);
// This has to be called AFTER _phyiscal and _logical are properly linked
// together.
prepareIndexes(info.get("indexes"));
}
/*static*/ LogicalDataSource::Category const& LogicalCollection::category() noexcept {
static const Category category;
return category;
}
LogicalCollection::~LogicalCollection() {}
// SECTION: sharding
ShardingInfo* LogicalCollection::shardingInfo() const {
TRI_ASSERT(_sharding != nullptr);
return _sharding.get();
}
size_t LogicalCollection::numberOfShards() const {
TRI_ASSERT(_sharding != nullptr);
return _sharding->numberOfShards();
}
size_t LogicalCollection::replicationFactor() const {
TRI_ASSERT(_sharding != nullptr);
return _sharding->replicationFactor();
}
std::string LogicalCollection::distributeShardsLike() const {
TRI_ASSERT(_sharding != nullptr);
return _sharding->distributeShardsLike();
}
void LogicalCollection::distributeShardsLike(std::string const& cid,
ShardingInfo const* other) {
TRI_ASSERT(_sharding != nullptr);
_sharding->distributeShardsLike(cid, other);
}
std::vector<std::string> const& LogicalCollection::avoidServers() const {
TRI_ASSERT(_sharding != nullptr);
return _sharding->avoidServers();
}
bool LogicalCollection::isSatellite() const {
TRI_ASSERT(_sharding != nullptr);
return _sharding->isSatellite();
}
bool LogicalCollection::usesDefaultShardKeys() const {
TRI_ASSERT(_sharding != nullptr);
return _sharding->usesDefaultShardKeys();
}
std::vector<std::string> const& LogicalCollection::shardKeys() const {
TRI_ASSERT(_sharding != nullptr);
return _sharding->shardKeys();
}
std::shared_ptr<ShardMap> LogicalCollection::shardIds() const {
TRI_ASSERT(_sharding != nullptr);
return _sharding->shardIds();
}
void LogicalCollection::setShardMap(std::shared_ptr<ShardMap> const& map) {
TRI_ASSERT(_sharding != nullptr);
_sharding->setShardMap(map);
}
int LogicalCollection::getResponsibleShard(arangodb::velocypack::Slice slice,
bool docComplete, std::string& shardID) {
bool usesDefaultShardKeys;
return getResponsibleShard(slice, docComplete, shardID, usesDefaultShardKeys);
}
int LogicalCollection::getResponsibleShard(arangodb::velocypack::Slice slice,
bool docComplete, std::string& shardID,
bool& usesDefaultShardKeys,
std::string const& key) {
TRI_ASSERT(_sharding != nullptr);
return _sharding->getResponsibleShard(slice, docComplete, shardID,
usesDefaultShardKeys, key);
}
/// @briefs creates a new document key, the input slice is ignored here
std::string LogicalCollection::createKey(VPackSlice) {
return keyGenerator()->generate();
}
void LogicalCollection::prepareIndexes(VPackSlice indexesSlice) {
TRI_ASSERT(_physical != nullptr);
if (!indexesSlice.isArray()) {
// always point to an array
indexesSlice = arangodb::velocypack::Slice::emptyArraySlice();
}
_physical->prepareIndexes(indexesSlice);
}
std::unique_ptr<IndexIterator> LogicalCollection::getAllIterator(transaction::Methods* trx) {
return _physical->getAllIterator(trx);
}
std::unique_ptr<IndexIterator> LogicalCollection::getAnyIterator(transaction::Methods* trx) {
return _physical->getAnyIterator(trx);
}
void LogicalCollection::invokeOnAllElements(transaction::Methods* trx,
std::function<bool(LocalDocumentId const&)> callback) {
_physical->invokeOnAllElements(trx, callback);
}
// @brief Return the number of documents in this collection
uint64_t LogicalCollection::numberDocuments(transaction::Methods* trx,
transaction::CountType type) {
// detailed results should have been handled in the levels above us
TRI_ASSERT(type != transaction::CountType::Detailed);
int64_t documents = transaction::CountCache::NotPopulated;
if (type == transaction::CountType::ForceCache) {
// always return from the cache, regardless what's in it
documents = _countCache.get();
} else if (type == transaction::CountType::TryCache) {
documents = _countCache.get(transaction::CountCache::Ttl);
}
if (documents == transaction::CountCache::NotPopulated) {
documents = static_cast<int64_t>(getPhysical()->numberDocuments(trx));
_countCache.store(documents);
}
TRI_ASSERT(documents >= 0);
return static_cast<uint64_t>(documents);
}
uint32_t LogicalCollection::internalVersion() const { return _internalVersion; }
TRI_col_type_e LogicalCollection::type() const { return _type; }
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::executeWhileStatusWriteLocked(std::function<void()> const& callback) {
WRITE_LOCKER_EVENTUAL(locker, _lock);
callback();
}
void LogicalCollection::executeWhileStatusLocked(std::function<void()> const& callback) {
READ_LOCKER(locker, _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() const {
READ_LOCKER(readLocker, _lock);
return ::translateStatus(_status);
}
// SECTION: Properties
TRI_voc_rid_t LogicalCollection::revision(transaction::Methods* trx) const {
// TODO CoordinatorCase
TRI_ASSERT(!ServerState::instance()->isCoordinator());
return _physical->revision(trx);
}
std::unique_ptr<FollowerInfo> const& LogicalCollection::followers() const {
return _followers;
}
IndexEstMap LogicalCollection::clusterIndexEstimates(bool allowUpdate, TRI_voc_tid_t tid) {
return getPhysical()->clusterIndexEstimates(allowUpdate, tid);
}
void LogicalCollection::setClusterIndexEstimates(IndexEstMap&& estimates) {
getPhysical()->setClusterIndexEstimates(std::move(estimates));
}
void LogicalCollection::flushClusterIndexEstimates() {
getPhysical()->flushClusterIndexEstimates();
}
std::vector<std::shared_ptr<arangodb::Index>> LogicalCollection::getIndexes() const {
return getPhysical()->getIndexes();
}
void LogicalCollection::getIndexesVPack(
VPackBuilder& result, std::underlying_type<Index::Serialize>::type flags,
std::function<bool(arangodb::Index const*)> const& filter) const {
getPhysical()->getIndexesVPack(result, flags, filter);
}
bool LogicalCollection::allowUserKeys() const { return _allowUserKeys; }
// 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
Result LogicalCollection::rename(std::string&& newName) {
// Should only be called from inside vocbase.
// Otherwise caching is destroyed.
TRI_ASSERT(!ServerState::instance()->isCoordinator()); // NOT YET IMPLEMENTED
auto* databaseFeature =
application_features::ApplicationServer::lookupFeature<DatabaseFeature>(
"Database");
if (!databaseFeature) {
return Result(
TRI_ERROR_INTERNAL,
"failed to find feature 'Database' while renaming collection");
}
// Check for illegal 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_DATA_SOURCE_NOT_FOUND;
default:
// Fall through intentional
break;
}
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;
}
auto doSync = databaseFeature->forceSyncProperties();
std::string oldName = name();
// Okay we can finally rename safely
try {
StorageEngine* engine = EngineSelectorFeature::ENGINE;
TRI_ASSERT(engine != nullptr);
name(std::move(newName));
engine->changeCollection(vocbase(), *this, doSync);
} catch (basics::Exception const& ex) {
// Engine Rename somehow failed. Reset to old name
name(std::move(oldName));
return ex.code();
} catch (...) {
// Engine Rename somehow failed. Reset to old name
name(std::move(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
return getPhysical()->close();
}
void LogicalCollection::load() { _physical->load(); }
void LogicalCollection::unload() { _physical->unload(); }
arangodb::Result LogicalCollection::drop() {
// make sure collection has been closed
this->close();
TRI_ASSERT(!ServerState::instance()->isCoordinator());
StorageEngine* engine = EngineSelectorFeature::ENGINE;
engine->destroyCollection(vocbase(), *this);
deleted(true);
_physical->drop();
return arangodb::Result();
}
void LogicalCollection::setStatus(TRI_vocbase_col_status_e status) {
_status = status;
if (status == TRI_VOC_COL_STATUS_LOADED) {
increaseInternalVersion();
}
}
void LogicalCollection::toVelocyPackForClusterInventory(VPackBuilder& result,
bool useSystem, bool isReady,
bool allInSync) const {
if (system() && !useSystem) {
return;
}
result.openObject();
result.add(VPackValue("parameters"));
std::unordered_set<std::string> ignoreKeys{
"allowUserKeys", "cid", "count", "statusString", "version",
"distributeShardsLike", "objectId", "indexes"};
VPackBuilder params = toVelocyPackIgnore(ignoreKeys, false, false);
{
VPackObjectBuilder guard(&result);
for (auto const& p : VPackObjectIterator(params.slice())) {
result.add(p.key);
result.add(p.value);
}
if (!_sharding->distributeShardsLike().empty()) {
CollectionNameResolver resolver(vocbase());
result.add("distributeShardsLike",
VPackValue(resolver.getCollectionNameCluster(static_cast<TRI_voc_cid_t>(
basics::StringUtils::uint64(distributeShardsLike())))));
}
}
result.add(VPackValue("indexes"));
getIndexesVPack(result, Index::makeFlags(), [](arangodb::Index const* idx) {
// we have to exclude the primary and the edge index here, because otherwise
// at least the MMFiles engine will try to create it
// AND exclude hidden indexes
return (idx->type() != arangodb::Index::TRI_IDX_TYPE_PRIMARY_INDEX &&
idx->type() != arangodb::Index::TRI_IDX_TYPE_EDGE_INDEX && !idx->isHidden());
});
result.add("planVersion", VPackValue(planVersion()));
result.add("isReady", VPackValue(isReady));
result.add("allInSync", VPackValue(allInSync));
result.close(); // CollectionInfo
}
arangodb::Result LogicalCollection::appendVelocyPack(arangodb::velocypack::Builder& result,
bool translateCids,
bool forPersistence) const {
// We write into an open object
TRI_ASSERT(result.isOpenObject());
// Collection Meta Information
result.add("cid", VPackValue(std::to_string(id())));
result.add(StaticStrings::DataSourceType, VPackValue(static_cast<int>(_type)));
result.add("status", VPackValue(_status));
result.add("statusString", VPackValue(::translateStatus(_status)));
result.add("version", VPackValue(_version));
// Collection Flags
result.add("waitForSync", VPackValue(_waitForSync));
if (!forPersistence) {
// with 'forPersistence' added by LogicalDataSource::toVelocyPack
// FIXME TODO is this needed in !forPersistence???
result.add(StaticStrings::DataSourceDeleted, VPackValue(deleted()));
result.add(StaticStrings::DataSourceSystem, VPackValue(system()));
}
// TODO is this still releveant or redundant in keyGenerator?
result.add("allowUserKeys", VPackValue(_allowUserKeys));
// keyoptions
result.add("keyOptions", VPackValue(VPackValueType::Object));
if (_keyGenerator != nullptr) {
_keyGenerator->toVelocyPack(result);
}
result.close();
// Physical Information
getPhysical()->getPropertiesVPack(result);
// Indexes
result.add(VPackValue("indexes"));
auto flags = Index::makeFlags();
// hide hidden indexes. In effect hides unfinished indexes,
// and iResearch links (only on a single-server and coordinator)
auto filter = [&](arangodb::Index const* idx) {
return (forPersistence || !idx->isHidden());
};
if (forPersistence) {
flags = Index::makeFlags(Index::Serialize::Internals);
}
getIndexesVPack(result, flags, filter);
// Cluster Specific
result.add(StaticStrings::IsSmart, VPackValue(_isSmart));
if (hasSmartJoinAttribute()) {
result.add(StaticStrings::SmartJoinAttribute, VPackValue(_smartJoinAttribute));
}
if (!forPersistence) {
// with 'forPersistence' added by LogicalDataSource::toVelocyPack
// FIXME TODO is this needed in !forPersistence???
result.add(StaticStrings::DataSourcePlanId, VPackValue(std::to_string(planId())));
}
_sharding->toVelocyPack(result, translateCids);
includeVelocyPackEnterprise(result);
TRI_ASSERT(result.isOpenObject());
// We leave the object open
return arangodb::Result();
}
void LogicalCollection::toVelocyPackIgnore(VPackBuilder& result,
std::unordered_set<std::string> const& ignoreKeys,
bool translateCids, bool forPersistence) const {
TRI_ASSERT(result.isOpenObject());
VPackBuilder b = toVelocyPackIgnore(ignoreKeys, translateCids, forPersistence);
result.add(VPackObjectIterator(b.slice()));
}
VPackBuilder LogicalCollection::toVelocyPackIgnore(std::unordered_set<std::string> const& ignoreKeys,
bool translateCids,
bool forPersistence) const {
VPackBuilder full;
full.openObject();
properties(full, translateCids, forPersistence);
full.close();
if (ignoreKeys.empty()) {
return full;
}
return VPackCollection::remove(full.slice(), ignoreKeys);
}
void LogicalCollection::includeVelocyPackEnterprise(VPackBuilder&) const {
// We ain't no enterprise
}
void LogicalCollection::increaseInternalVersion() { ++_internalVersion; }
arangodb::Result LogicalCollection::properties(velocypack::Slice const& slice,
bool partialUpdate) {
// 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 ...
auto* databaseFeature =
application_features::ApplicationServer::lookupFeature<DatabaseFeature>(
"Database");
if (!databaseFeature) {
return Result(
TRI_ERROR_INTERNAL,
"failed to find feature 'Database' while updating collection");
}
auto* engine = EngineSelectorFeature::ENGINE;
if (!engine) {
return Result(TRI_ERROR_INTERNAL,
"failed to find a storage engine while updating collection");
}
MUTEX_LOCKER(guard, _infoLock); // prevent simultanious updates
size_t rf = _sharding->replicationFactor();
VPackSlice rfSl = slice.get("replicationFactor");
if (!rfSl.isNone()) {
if (rfSl.isInteger()) {
int64_t rfTest = rfSl.getNumber<int64_t>();
if (rfTest < 0) {
// negative value for replication factor... not good
return Result(TRI_ERROR_BAD_PARAMETER,
"bad value for replicationFactor");
}
rf = rfSl.getNumber<size_t>();
if ((!isSatellite() && rf == 0) || rf > 10) {
return Result(TRI_ERROR_BAD_PARAMETER,
"bad value for replicationFactor");
}
if (ServerState::instance()->isCoordinator() &&
rf != _sharding->replicationFactor()) { // sanity checks
if (!_sharding->distributeShardsLike().empty()) {
return Result(TRI_ERROR_FORBIDDEN,
"Cannot change replicationFactor, "
"please change " +
_sharding->distributeShardsLike());
} else if (_type == TRI_COL_TYPE_EDGE && _isSmart) {
return Result(TRI_ERROR_NOT_IMPLEMENTED,
"Changing replicationFactor "
"not supported for smart edge collections");
} else if (isSatellite()) {
return Result(TRI_ERROR_FORBIDDEN,
"Satellite collection, "
"cannot change replicationFactor");
}
}
} else if (rfSl.isString()) {
if (rfSl.compareString("satellite") != 0) {
// only the string "satellite" is allowed here
return Result(TRI_ERROR_BAD_PARAMETER, "bad value for satellite");
}
// we got the string "satellite"...
#ifdef USE_ENTERPRISE
if (!isSatellite()) {
// but the collection is not a satellite collection!
return Result(TRI_ERROR_FORBIDDEN,
"cannot change satellite collection status");
}
#else
return Result(TRI_ERROR_FORBIDDEN,
"cannot use satellite collection status");
#endif
// fallthrough here if we set the string "satellite" for a satellite
// collection
TRI_ASSERT(isSatellite() && _sharding->replicationFactor() == 0 && rf == 0);
} else {
return Result(TRI_ERROR_BAD_PARAMETER, "bad value for replicationFactor");
}
}
auto doSync = !engine->inRecovery() && databaseFeature->forceSyncProperties();
// The physical may first reject illegal properties.
// After this call it either has thrown or the properties are stored
Result res = getPhysical()->updateProperties(slice, doSync);
if (!res.ok()) {
return res;
}
TRI_ASSERT(!isSatellite() || rf == 0);
_waitForSync = Helper::getBooleanValue(slice, "waitForSync", _waitForSync);
_sharding->replicationFactor(rf);
if (ServerState::instance()->isCoordinator()) {
// We need to inform the cluster as well
return ClusterInfo::instance()->setCollectionPropertiesCoordinator(
vocbase().name(), std::to_string(id()), this);
}
engine->changeCollection(vocbase(), *this, doSync);
if (DatabaseFeature::DATABASE != nullptr &&
DatabaseFeature::DATABASE->versionTracker() != nullptr) {
DatabaseFeature::DATABASE->versionTracker()->track("change collection");
}
return {};
}
/// @brief return the figures for a collection
std::shared_ptr<arangodb::velocypack::Builder> LogicalCollection::figures() const {
return getPhysical()->figures();
}
/// @brief opens an existing collection
void LogicalCollection::open(bool ignoreErrors) {
getPhysical()->open(ignoreErrors);
TRI_UpdateTickServer(id());
}
/// SECTION Indexes
std::shared_ptr<Index> LogicalCollection::lookupIndex(TRI_idx_iid_t idxId) const {
return getPhysical()->lookupIndex(idxId);
}
std::shared_ptr<Index> LogicalCollection::lookupIndex(std::string const& idxName) const {
return getPhysical()->lookupIndex(idxName);
}
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);
}
return getPhysical()->lookupIndex(info);
}
std::shared_ptr<Index> LogicalCollection::createIndex(VPackSlice const& info, bool& created) {
auto idx = _physical->createIndex(info, /*restore*/ false, created);
if (idx) {
if (DatabaseFeature::DATABASE != nullptr &&
DatabaseFeature::DATABASE->versionTracker() != nullptr) {
DatabaseFeature::DATABASE->versionTracker()->track("create index");
}
}
return idx;
}
/// @brief drops an index, including index file removal and replication
bool LogicalCollection::dropIndex(TRI_idx_iid_t iid) {
TRI_ASSERT(!ServerState::instance()->isCoordinator());
#if USE_PLAN_CACHE
arangodb::aql::PlanCache::instance()->invalidate(_vocbase);
#endif
arangodb::aql::QueryCache::instance()->invalidate(&vocbase(), guid());
bool result = _physical->dropIndex(iid);
if (result) {
if (DatabaseFeature::DATABASE != nullptr &&
DatabaseFeature::DATABASE->versionTracker() != nullptr) {
DatabaseFeature::DATABASE->versionTracker()->track("drop index");
}
}
return result;
}
/// @brief Persist the connected physical collection.
/// This should be called AFTER the collection is successfully
/// created and only on Single/DBServer
void LogicalCollection::persistPhysicalCollection() {
// Coordinators are not allowed to have local collections!
TRI_ASSERT(!ServerState::instance()->isCoordinator());
StorageEngine* engine = EngineSelectorFeature::ENGINE;
auto path = engine->createCollection(vocbase(), *this);
getPhysical()->setPath(path);
}
/// @brief Defer a callback to be executed when the collection
/// can be dropped. The callback is supposed to drop
/// the collection and it is guaranteed that no one is using
/// it at that moment.
void LogicalCollection::deferDropCollection(std::function<bool(LogicalCollection&)> const& callback) {
_physical->deferDropCollection(callback);
}
/// @brief reads an element from the document collection
Result LogicalCollection::read(transaction::Methods* trx,
arangodb::velocypack::StringRef const& key,
ManagedDocumentResult& result, bool lock) {
TRI_IF_FAILURE("LogicalCollection::read") { return Result(TRI_ERROR_DEBUG); }
return getPhysical()->read(trx, key, result, lock);
}
Result LogicalCollection::read(transaction::Methods* trx,
arangodb::velocypack::Slice const& key,
ManagedDocumentResult& result, bool lock) {
TRI_IF_FAILURE("LogicalCollection::read") { return Result(TRI_ERROR_DEBUG); }
return getPhysical()->read(trx, key, result, lock);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief processes a truncate operation (note: currently this only clears
/// the read-cache
////////////////////////////////////////////////////////////////////////////////
Result LogicalCollection::truncate(transaction::Methods& trx, OperationOptions& options) {
TRI_IF_FAILURE("LogicalCollection::truncate") {
return Result(TRI_ERROR_DEBUG);
}
return getPhysical()->truncate(trx, options);
}
/// @brief compact-data operation
Result LogicalCollection::compact() {
return getPhysical()->compact();
}
////////////////////////////////////////////////////////////////////////////////
/// @brief inserts a document or edge into the collection
////////////////////////////////////////////////////////////////////////////////
Result LogicalCollection::insert(transaction::Methods* trx, VPackSlice const slice,
ManagedDocumentResult& result, OperationOptions& options,
bool lock, KeyLockInfo* keyLockInfo,
std::function<void()> const& cbDuringLock) {
TRI_IF_FAILURE("LogicalCollection::insert") {
return Result(TRI_ERROR_DEBUG);
}
return getPhysical()->insert(trx, slice, result, options, lock,
keyLockInfo, cbDuringLock);
}
/// @brief updates a document or edge in a collection
Result LogicalCollection::update(transaction::Methods* trx, VPackSlice const newSlice,
ManagedDocumentResult& result, OperationOptions& options,
bool lock, ManagedDocumentResult& previous) {
TRI_IF_FAILURE("LogicalCollection::update") {
return Result(TRI_ERROR_DEBUG);
}
if (!newSlice.isObject()) {
return Result(TRI_ERROR_ARANGO_DOCUMENT_TYPE_INVALID);
}
return getPhysical()->update(trx, newSlice, result, options, lock,
previous);
}
/// @brief replaces a document or edge in a collection
Result LogicalCollection::replace(transaction::Methods* trx, VPackSlice const newSlice,
ManagedDocumentResult& result, OperationOptions& options,
bool lock, ManagedDocumentResult& previous) {
TRI_IF_FAILURE("LogicalCollection::replace") {
return Result(TRI_ERROR_DEBUG);
}
if (!newSlice.isObject()) {
return Result(TRI_ERROR_ARANGO_DOCUMENT_TYPE_INVALID);
}
return getPhysical()->replace(trx, newSlice, result, options, lock,
previous);
}
/// @brief removes a document or edge
Result LogicalCollection::remove(transaction::Methods& trx, velocypack::Slice const slice,
OperationOptions& options, bool lock,
ManagedDocumentResult& previous, KeyLockInfo* keyLockInfo,
std::function<void()> const& cbDuringLock) {
TRI_IF_FAILURE("LogicalCollection::remove") {
return Result(TRI_ERROR_DEBUG);
}
return getPhysical()->remove(trx, slice, previous, options,
lock, keyLockInfo, cbDuringLock);
}
bool LogicalCollection::readDocument(transaction::Methods* trx, LocalDocumentId const& token,
ManagedDocumentResult& result) const {
return getPhysical()->readDocument(trx, token, result);
}
bool LogicalCollection::readDocumentWithCallback(transaction::Methods* trx,
LocalDocumentId const& token,
IndexIterator::DocumentCallback const& cb) const {
return getPhysical()->readDocumentWithCallback(trx, token, cb);
}
/// @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
// SECTION: Key Options
VPackSlice LogicalCollection::keyOptions() const {
if (_keyOptions == nullptr) {
return arangodb::velocypack::Slice::nullSlice();
}
return VPackSlice(_keyOptions->data());
}
ChecksumResult LogicalCollection::checksum(bool withRevisions, bool withData) const {
auto ctx = transaction::StandaloneContext::Create(vocbase());
SingleCollectionTransaction trx(ctx, *this, AccessMode::Type::READ);
Result res = trx.begin();
if (!res.ok()) {
return ChecksumResult(std::move(res));
}
trx.pinData(id()); // will throw when it fails
// get last tick
LogicalCollection* collection = trx.documentCollection();
auto physical = collection->getPhysical();
TRI_ASSERT(physical != nullptr);
std::string const revisionId = TRI_RidToString(physical->revision(&trx));
uint64_t hash = 0;
trx.invokeOnAllElements(name(), [&hash, &withData, &withRevisions, &trx,
&collection](LocalDocumentId const& token) {
collection->readDocumentWithCallback(&trx, token, [&](LocalDocumentId const&, VPackSlice slice) {
uint64_t localHash =
transaction::helpers::extractKeyFromDocument(slice).hashString();
if (withRevisions) {
localHash += transaction::helpers::extractRevSliceFromDocument(slice).hash();
}
if (withData) {
// with data
uint64_t const n = slice.length() ^ 0xf00ba44ba5;
uint64_t seed = fasthash64_uint64(n, 0xdeadf054);
for (auto const& it : VPackObjectIterator(slice, false)) {
// loop over all attributes, but exclude _rev, _id and _key
// _id is different for each collection anyway, _rev is covered by
// withRevisions, and _key was already handled before
VPackValueLength keyLength;
char const* key = it.key.getString(keyLength);
if (keyLength >= 3 && key[0] == '_' &&
((keyLength == 3 && memcmp(key, "_id", 3) == 0) ||
(keyLength == 4 &&
(memcmp(key, "_key", 4) == 0 || memcmp(key, "_rev", 4) == 0)))) {
// exclude attribute
continue;
}
localHash ^= it.key.hash(seed) ^ 0xba5befd00d;
localHash += it.value.normalizedHash(seed) ^ 0xd4129f526421;
}
}
hash ^= localHash;
});
return true;
});
trx.finish(res);
std::string const hashString = std::to_string(hash);
VPackBuilder b;
{
VPackObjectBuilder o(&b);
b.add("checksum", VPackValue(hashString));
b.add("revision", VPackValue(revisionId));
}
return ChecksumResult(std::move(b));
}
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