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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/LocalTaskQueue.h"
#include "Basics/ReadLocker.h"
#include "Basics/StaticStrings.h"
#include "Basics/StringUtils.h"
#include "Basics/Timers.h"
#include "Basics/VelocyPackHelper.h"
#include "Basics/WriteLocker.h"
#include "Basics/encoding.h"
#include "Basics/process-utils.h"
#include "Cluster/ClusterInfo.h"
#include "Cluster/ClusterMethods.h"
#include "Cluster/FollowerInfo.h"
#include "Cluster/ServerState.h"
#include "Indexes/Index.h"
#include "MMFiles/MMFilesDocumentOperation.h"
#include "MMFiles/MMFilesCollection.h" //remove
#include "MMFiles/MMFilesPrimaryIndex.h"
#include "MMFiles/MMFilesIndexElement.h"
#include "MMFiles/MMFilesToken.h"
#include "MMFiles/MMFilesTransactionState.h"
#include "MMFiles/MMFilesWalMarker.h" //crud marker -- TODO remove
#include "MMFiles/MMFilesWalSlots.h" //TODO -- remove
#include "RestServer/DatabaseFeature.h"
#include "Scheduler/Scheduler.h"
#include "Scheduler/SchedulerFeature.h"
#include "StorageEngine/EngineSelectorFeature.h"
#include "StorageEngine/StorageEngine.h"
#include "StorageEngine/TransactionState.h"
#include "Transaction/Helpers.h"
#include "Utils/CollectionNameResolver.h"
#include "Utils/OperationOptions.h"
#include "Utils/SingleCollectionTransaction.h"
#include "Utils/StandaloneTransactionContext.h"
#include "VocBase/DatafileStatisticsContainer.h"
#include "VocBase/KeyGenerator.h"
#include "VocBase/ManagedDocumentResult.h"
#include "VocBase/PhysicalCollection.h"
#include "VocBase/ticks.h"
#include <velocypack/Collection.h>
#include <velocypack/Iterator.h>
#include <velocypack/velocypack-aliases.h>
using namespace arangodb;
using Helper = arangodb::basics::VelocyPackHelper;
namespace {
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();
}
}
/// @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),
_isSystem(other.isSystem()),
_isVolatile(other.isVolatile()),
_waitForSync(other.waitForSync()),
_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(other.getPhysical()->clone(this,other.getPhysical())),
_keyGenerator() {
_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);
}
}
// @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(Helper::readNumericValue<TRI_col_type_e, int>(info, "type",
TRI_COL_TYPE_UNKNOWN)),
_name(ReadStringValue(info, "name", "")),
_distributeShardsLike(ReadStringValue(info, "distributeShardsLike", "")),
_isSmart(Helper::readBooleanValue(info, "isSmart", false)),
_status(Helper::readNumericValue<TRI_vocbase_col_status_e, int>(
info, "status", TRI_VOC_COL_STATUS_CORRUPTED)),
_isLocal(!ServerState::instance()->isCoordinator()),
_isDeleted(Helper::readBooleanValue(info, "deleted", false)),
_isSystem(IsSystemName(_name) &&
Helper::readBooleanValue(info, "isSystem", false)),
_isVolatile(Helper::readBooleanValue(info, "isVolatile", false)),
_waitForSync(Helper::readBooleanValue(info, "waitForSync", false)),
_keyOptions(CopySliceValue(info, "keyOptions")),
_version(Helper::readNumericValue<uint32_t>(info, "version", currentVersion())),
_indexBuckets(Helper::readNumericValue<uint32_t>(
info, "indexBuckets", DatabaseFeature::defaultIndexBuckets())),
_replicationFactor(1),
_numberOfShards(Helper::readNumericValue<size_t>(info, "numberOfShards", 1)),
_allowUserKeys(Helper::readBooleanValue(info, "allowUserKeys", true)),
_shardIds(new ShardMap()),
_vocbase(vocbase),
_cleanupIndexes(0),
_persistentIndexes(0),
_physical(EngineSelectorFeature::ENGINE->createPhysicalCollection(this,info)),
_keyGenerator() {
getPhysical()->setPath(ReadStringValue(info, "path", ""));
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 (getPhysical()->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_TOPIC(ERR, arangodb::Logger::FIXME) << "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()) {
StorageEngine* engine = EngineSelectorFeature::ENGINE;
IndexFactory const* idxFactory = engine->indexFactory();
TRI_ASSERT(idxFactory != nullptr);
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 = idxFactory->prepareIndexFromSlice(v, false, this, true);
// TODO Move IndexTypeCheck out
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_TOPIC(ERR, arangodb::Logger::FIXME) << "got invalid indexes for collection '" << _name << "'";
for (auto const& it : _indexes) {
LOG_TOPIC(ERR, arangodb::Logger::FIXME) << "- " << 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 (getPhysical()->path().empty()) {
std::string path = engine->createCollection(_vocbase, _cid, this);
getPhysical()->setPath(path);
}
}
int64_t count = Helper::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));
}
LogicalCollection::~LogicalCollection() {}
bool LogicalCollection::IsAllowedName(VPackSlice parameters) {
bool allowSystem = Helper::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 Return the number of documents in this collection
uint64_t LogicalCollection::numberDocuments() const {
return getPhysical()->numberDocuments();
}
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();
}
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::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; }
// 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;
}
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();
}
void LogicalCollection::getPropertiesVPack(VPackBuilder& result, bool translateCids) const {
TRI_ASSERT(result.isOpenObject());
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(getPhysical()->doCompact()));
result.add("isSystem", VPackValue(_isSystem));
result.add("isVolatile", VPackValue(_isVolatile));
result.add("waitForSync", VPackValue(_waitForSync));
// maybe add journalsize in Pysical - problem we need ot create one object
// we shold not merge one silice created by they physical with the one
// created in this place or maybe just split info in logical and pysical part
// that would probably result in bigger changes TODO FIXME
result.add("journalSize", VPackValue(getPhysical()->journalSize()));
result.add("indexBuckets", VPackValue(_indexBuckets));
result.add("replicationFactor", VPackValue(_replicationFactor));
if (!_distributeShardsLike.empty()) {
if (translateCids) {
CollectionNameResolver resolver(_vocbase);
result.add("distributeShardsLike",
VPackValue(resolver.getCollectionNameCluster(
static_cast<TRI_voc_cid_t>(
basics::StringUtils::uint64(_distributeShardsLike)))));
} else {
result.add("distributeShardsLike", VPackValue(_distributeShardsLike));
}
}
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
}
// 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);
// 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
return getPhysical()->close();
}
bool LogicalCollection::applyForTickRange(
TRI_voc_tick_t dataMin, TRI_voc_tick_t dataMax,
std::function<bool(TRI_voc_tick_t foundTick,
TRI_df_marker_t const* marker)> const& callback) {
return getPhysical()->applyForTickRange(dataMin, dataMax, callback);
}
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, false);
result.close(); // Base Object
}
void LogicalCollection::toVelocyPackForClusterInventory(VPackBuilder& result,
bool useSystem) const {
if (_isSystem && !useSystem) {
return;
}
result.openObject();
result.add(VPackValue("parameters"));
result.openObject();
toVelocyPackInObject(result, true);
result.close();
result.add(VPackValue("indexes"));
getIndexesVPack(result, false);
result.close(); // CollectionInfo
}
void LogicalCollection::toVelocyPack(VPackBuilder& result,
bool withPath) const {
result.openObject();
toVelocyPackInObject(result, false);
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(getPhysical()->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, bool translateCids) const {
getPropertiesVPack(result, translateCids);
result.add("numberOfShards", VPackValue(_numberOfShards));
if (!_avoidServers.empty()) {
result.add(VPackValue("avoidServers"));
VPackArrayBuilder b(&result);
for (auto const& i : _avoidServers) {
result.add(VPackValue(i));
}
}
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::updateProperties(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
_waitForSync = Helper::getBooleanValue(slice, "waitForSync", _waitForSync);
getPhysical()->updateProperties(slice,doSync);
_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
// add engine-specific figures
getPhysical()->figures(builder);
builder->close();
}
return builder;
}
/// @brief opens an existing collection
void LogicalCollection::open(bool ignoreErrors) {
getPhysical()->open(ignoreErrors);
TRI_UpdateTickServer(_cid);
}
/// 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::Methods* 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;
}
StorageEngine* engine = EngineSelectorFeature::ENGINE;
IndexFactory const* idxFactory = engine->indexFactory();
TRI_ASSERT(idxFactory != nullptr);
// We are sure that we do not have an index of this type.
// We also hold the lock.
// Create it
idx = idxFactory->prepareIndexFromSlice(info, true, this, false);
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;
}
int res = getPhysical()->saveIndex(trx, idx);
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);
updateProperties(builder.slice(), doSync);
}
created = true;
return idx;
}
/// @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());
return _physical->dropIndex(iid, writeMarker);
}
/// @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;
}
std::vector<std::shared_ptr<arangodb::Index>> systemIndexes;
StorageEngine* engine = EngineSelectorFeature::ENGINE;
IndexFactory const* idxFactory = engine->indexFactory();
TRI_ASSERT(idxFactory != nullptr);
idxFactory->fillSystemIndexes(this, systemIndexes);
for (auto const& it : systemIndexes) {
addIndex(it);
}
}
std::vector<std::shared_ptr<arangodb::Index>> const*
LogicalCollection::indexList() const {
return &_indexes;
}
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 reads an element from the document collection
int LogicalCollection::read(transaction::Methods* trx, std::string const& key,
ManagedDocumentResult& result, bool lock) {
return read(trx, StringRef(key.c_str(), key.size()), result, lock);
}
int LogicalCollection::read(transaction::Methods* trx, StringRef const& key,
ManagedDocumentResult& result, bool lock) {
transaction::BuilderLeaser builder(trx);
builder->add(VPackValuePair(key.data(), key.size(), VPackValueType::String));
return getPhysical()->read(trx, builder->slice(), result, lock);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief processes a truncate operation (note: currently this only clears
/// the read-cache
////////////////////////////////////////////////////////////////////////////////
void LogicalCollection::truncate(transaction::Methods* trx, OperationOptions& options) {
getPhysical()->truncate(trx, options);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief inserts a document or edge into the collection
////////////////////////////////////////////////////////////////////////////////
int LogicalCollection::insert(transaction::Methods* trx, VPackSlice const slice,
ManagedDocumentResult& result,
OperationOptions& options,
TRI_voc_tick_t& resultMarkerTick, bool lock) {
resultMarkerTick = 0;
return getPhysical()->insert(trx, slice, result, options, resultMarkerTick,
lock);
}
/// @brief updates a document or edge in a collection
int LogicalCollection::update(transaction::Methods* 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;
}
return getPhysical()->update(trx, newSlice, result, options, resultMarkerTick,
lock, prevRev, previous, revisionId, key);
}
/// @brief replaces a document or edge in a collection
int LogicalCollection::replace(
transaction::Methods* trx, VPackSlice const newSlice,
ManagedDocumentResult& result,
OperationOptions& options,
TRI_voc_tick_t& resultMarkerTick, bool lock,
TRI_voc_rid_t& prevRev,
ManagedDocumentResult& previous) {
resultMarkerTick = 0;
if (!newSlice.isObject()) {
return TRI_ERROR_ARANGO_DOCUMENT_TYPE_INVALID;
}
prevRev = 0;
VPackSlice fromSlice;
VPackSlice toSlice;
if (type() == TRI_COL_TYPE_EDGE) {
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 || revisionId == UINT64_MAX) {
// Do not tolerate old revision ticks or invalid ones:
revisionId = TRI_HybridLogicalClock();
}
} else {
revisionId = TRI_HybridLogicalClock();
}
return getPhysical()->replace(trx, newSlice, result, options,
resultMarkerTick, lock, prevRev, previous,
revisionId, fromSlice, toSlice);
}
/// @brief removes a document or edge
int LogicalCollection::remove(transaction::Methods* 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 || revisionId == UINT64_MAX) {
// Do not tolerate old revisions or illegal ones
revisionId = TRI_HybridLogicalClock();
}
}
} else {
revisionId = TRI_HybridLogicalClock();
}
return getPhysical()->remove(trx, slice, previous, options, resultMarkerTick,
lock, revisionId, prevRev);
}
void LogicalCollection::sizeHint(transaction::Methods* trx, int64_t hint) {
if (hint <= 0) {
return;
}
getPhysical()->sizeHint(trx, hint);
}
bool LogicalCollection::readDocument(transaction::Methods* trx, DocumentIdentifierToken const& token, ManagedDocumentResult& result) {
return getPhysical()->readDocument(trx, token, result);
}
bool LogicalCollection::readDocumentConditional(
transaction::Methods* trx, DocumentIdentifierToken const& token,
TRI_voc_tick_t maxTick, ManagedDocumentResult& result) {
return getPhysical()->readDocumentConditional(trx, token, maxTick, result);
}
/// @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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