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|
// collection.cpp
/**
* Copyright (C) 2013-2014 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kStorage
#include "mongo/platform/basic.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/base/counter.h"
#include "mongo/base/owned_pointer_map.h"
#include "mongo/db/background.h"
#include "mongo/db/catalog/collection_catalog_entry.h"
#include "mongo/db/catalog/database_catalog_entry.h"
#include "mongo/db/catalog/document_validation.h"
#include "mongo/db/catalog/index_create.h"
#include "mongo/db/clientcursor.h"
#include "mongo/db/commands/server_status_metric.h"
#include "mongo/db/curop.h"
#include "mongo/db/index/index_access_method.h"
#include "mongo/db/keypattern.h"
#include "mongo/db/matcher/expression_parser.h"
#include "mongo/db/matcher/extensions_callback_disallow_extensions.h"
#include "mongo/db/op_observer.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/ops/update_driver.h"
#include "mongo/db/ops/update_request.h"
#include "mongo/db/repl/replication_coordinator_global.h"
#include "mongo/db/server_parameters.h"
#include "mongo/db/service_context.h"
#include "mongo/db/storage/mmap_v1/mmap_v1_options.h"
#include "mongo/db/storage/record_fetcher.h"
#include "mongo/db/storage/record_store.h"
#include "mongo/db/auth/user_document_parser.h" // XXX-ANDY
#include "mongo/util/log.h"
namespace mongo {
namespace {
const auto bannedExpressionsInValidators = std::set<StringData>{
"$geoNear", "$near", "$nearSphere", "$text", "$where",
};
Status checkValidatorForBannedExpressions(const BSONObj& validator) {
for (auto field : validator) {
const auto name = field.fieldNameStringData();
if (name[0] == '$' && bannedExpressionsInValidators.count(name)) {
return {ErrorCodes::InvalidOptions,
str::stream() << name << " is not allowed in collection validators"};
}
if (field.type() == Object || field.type() == Array) {
auto status = checkValidatorForBannedExpressions(field.Obj());
if (!status.isOK())
return status;
}
}
return Status::OK();
}
}
using std::unique_ptr;
using std::endl;
using std::string;
using std::vector;
using logger::LogComponent;
std::string CompactOptions::toString() const {
std::stringstream ss;
ss << "paddingMode: ";
switch (paddingMode) {
case NONE:
ss << "NONE";
break;
case PRESERVE:
ss << "PRESERVE";
break;
case MANUAL:
ss << "MANUAL (" << paddingBytes << " + ( doc * " << paddingFactor << ") )";
}
ss << " validateDocuments: " << validateDocuments;
return ss.str();
}
//
// CappedInsertNotifier
//
CappedInsertNotifier::CappedInsertNotifier() : _version(0), _dead(false) {}
void CappedInsertNotifier::notifyAll() {
stdx::lock_guard<stdx::mutex> lk(_mutex);
++_version;
_notifier.notify_all();
}
void CappedInsertNotifier::_wait(stdx::unique_lock<stdx::mutex>& lk,
uint64_t prevVersion,
Microseconds timeout) const {
while (!_dead && prevVersion == _version) {
if (timeout == Microseconds::max()) {
_notifier.wait(lk);
} else if (stdx::cv_status::timeout == _notifier.wait_for(lk, timeout)) {
return;
}
}
}
void CappedInsertNotifier::wait(uint64_t prevVersion, Microseconds timeout) const {
stdx::unique_lock<stdx::mutex> lk(_mutex);
_wait(lk, prevVersion, timeout);
}
void CappedInsertNotifier::wait(Microseconds timeout) const {
stdx::unique_lock<stdx::mutex> lk(_mutex);
_wait(lk, _version, timeout);
}
void CappedInsertNotifier::wait() const {
stdx::unique_lock<stdx::mutex> lk(_mutex);
_wait(lk, _version, Microseconds::max());
}
void CappedInsertNotifier::kill() {
stdx::lock_guard<stdx::mutex> lk(_mutex);
_dead = true;
_notifier.notify_all();
}
bool CappedInsertNotifier::isDead() {
stdx::lock_guard<stdx::mutex> lk(_mutex);
return _dead;
}
// ----
Collection::Collection(OperationContext* txn,
StringData fullNS,
CollectionCatalogEntry* details,
RecordStore* recordStore,
DatabaseCatalogEntry* dbce)
: _ns(fullNS),
_details(details),
_recordStore(recordStore),
_dbce(dbce),
_needCappedLock(supportsDocLocking() && _recordStore->isCapped() && _ns.db() != "local"),
_infoCache(this),
_indexCatalog(this),
_validatorDoc(_details->getCollectionOptions(txn).validator.getOwned()),
_validator(uassertStatusOK(parseValidator(_validatorDoc))),
_validationAction(uassertStatusOK(
_parseValidationAction(_details->getCollectionOptions(txn).validationAction))),
_validationLevel(uassertStatusOK(
_parseValidationLevel(_details->getCollectionOptions(txn).validationLevel))),
_cursorManager(fullNS),
_cappedNotifier(_recordStore->isCapped() ? new CappedInsertNotifier() : nullptr),
_mustTakeCappedLockOnInsert(isCapped() && !_ns.isSystemDotProfile() && !_ns.isOplog()) {
_magic = 1357924;
_indexCatalog.init(txn);
if (isCapped())
_recordStore->setCappedCallback(this);
_infoCache.init(txn);
}
Collection::~Collection() {
verify(ok());
_magic = 0;
if (_cappedNotifier) {
_cappedNotifier->kill();
}
}
bool Collection::requiresIdIndex() const {
if (_ns.ns().find('$') != string::npos) {
// no indexes on indexes
return false;
}
if (_ns.isSystem()) {
StringData shortName = _ns.coll().substr(_ns.coll().find('.') + 1);
if (shortName == "indexes" || shortName == "namespaces" || shortName == "profile") {
return false;
}
}
if (_ns.db() == "local") {
if (_ns.coll().startsWith("oplog."))
return false;
}
if (!_ns.isSystem()) {
// non system collections definitely have an _id index
return true;
}
return true;
}
std::unique_ptr<SeekableRecordCursor> Collection::getCursor(OperationContext* txn,
bool forward) const {
dassert(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_IS));
invariant(ok());
return _recordStore->getCursor(txn, forward);
}
vector<std::unique_ptr<RecordCursor>> Collection::getManyCursors(OperationContext* txn) const {
dassert(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_IS));
return _recordStore->getManyCursors(txn);
}
Snapshotted<BSONObj> Collection::docFor(OperationContext* txn, const RecordId& loc) const {
return Snapshotted<BSONObj>(txn->recoveryUnit()->getSnapshotId(),
_recordStore->dataFor(txn, loc).releaseToBson());
}
bool Collection::findDoc(OperationContext* txn,
const RecordId& loc,
Snapshotted<BSONObj>* out) const {
dassert(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_IS));
RecordData rd;
if (!_recordStore->findRecord(txn, loc, &rd))
return false;
*out = Snapshotted<BSONObj>(txn->recoveryUnit()->getSnapshotId(), rd.releaseToBson());
return true;
}
Status Collection::checkValidation(OperationContext* txn, const BSONObj& document) const {
if (!_validator)
return Status::OK();
if (_validationLevel == OFF)
return Status::OK();
if (documentValidationDisabled(txn))
return Status::OK();
if (_validator->matchesBSON(document))
return Status::OK();
if (_validationAction == WARN) {
warning() << "Document would fail validation"
<< " collection: " << ns() << " doc: " << document;
return Status::OK();
}
return {ErrorCodes::DocumentValidationFailure, "Document failed validation"};
}
StatusWithMatchExpression Collection::parseValidator(const BSONObj& validator) const {
if (validator.isEmpty())
return {nullptr};
if (ns().isSystem()) {
return {ErrorCodes::InvalidOptions,
"Document validators not allowed on system collections."};
}
if (ns().isOnInternalDb()) {
return {ErrorCodes::InvalidOptions,
str::stream() << "Document validators are not allowed on collections in"
<< " the " << ns().db() << " database"};
}
{
auto status = checkValidatorForBannedExpressions(validator);
if (!status.isOK())
return status;
}
auto statusWithMatcher =
MatchExpressionParser::parse(validator, ExtensionsCallbackDisallowExtensions());
if (!statusWithMatcher.isOK())
return statusWithMatcher.getStatus();
return statusWithMatcher;
}
Status Collection::insertDocument(OperationContext* txn, const DocWriter* doc, bool enforceQuota) {
invariant(!_validator || documentValidationDisabled(txn));
dassert(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_IX));
invariant(!_indexCatalog.haveAnyIndexes()); // eventually can implement, just not done
if (_mustTakeCappedLockOnInsert)
synchronizeOnCappedInFlightResource(txn->lockState(), _ns);
StatusWith<RecordId> loc = _recordStore->insertRecord(txn, doc, _enforceQuota(enforceQuota));
if (!loc.isOK())
return loc.getStatus();
// we cannot call into the OpObserver here because the document being written is not present
// fortunately, this is currently only used for adding entries to the oplog.
txn->recoveryUnit()->onCommit([this]() { notifyCappedWaitersIfNeeded(); });
return loc.getStatus();
}
Status Collection::insertDocuments(OperationContext* txn,
const vector<BSONObj>::const_iterator begin,
const vector<BSONObj>::const_iterator end,
bool enforceQuota,
bool fromMigrate) {
// Should really be done in the collection object at creation and updated on index create.
const bool hasIdIndex = _indexCatalog.findIdIndex(txn);
for (auto it = begin; it != end; it++) {
if (hasIdIndex && (*it)["_id"].eoo()) {
return Status(ErrorCodes::InternalError,
str::stream() << "Collection::insertDocument got "
"document without _id for ns:" << _ns.ns());
}
auto status = checkValidation(txn, *it);
if (!status.isOK())
return status;
}
const SnapshotId sid = txn->recoveryUnit()->getSnapshotId();
if (_mustTakeCappedLockOnInsert)
synchronizeOnCappedInFlightResource(txn->lockState(), _ns);
Status status = _insertDocuments(txn, begin, end, enforceQuota);
if (!status.isOK())
return status;
invariant(sid == txn->recoveryUnit()->getSnapshotId());
getGlobalServiceContext()->getOpObserver()->onInserts(txn, ns(), begin, end, fromMigrate);
txn->recoveryUnit()->onCommit([this]() { notifyCappedWaitersIfNeeded(); });
return Status::OK();
}
Status Collection::insertDocument(OperationContext* txn,
const BSONObj& docToInsert,
bool enforceQuota,
bool fromMigrate) {
vector<BSONObj> docs;
docs.push_back(docToInsert);
return insertDocuments(txn, docs.begin(), docs.end(), enforceQuota, fromMigrate);
}
Status Collection::insertDocument(OperationContext* txn,
const BSONObj& doc,
MultiIndexBlock* indexBlock,
bool enforceQuota) {
{
auto status = checkValidation(txn, doc);
if (!status.isOK())
return status;
}
dassert(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_IX));
if (_mustTakeCappedLockOnInsert)
synchronizeOnCappedInFlightResource(txn->lockState(), _ns);
StatusWith<RecordId> loc =
_recordStore->insertRecord(txn, doc.objdata(), doc.objsize(), _enforceQuota(enforceQuota));
if (!loc.isOK())
return loc.getStatus();
Status status = indexBlock->insert(doc, loc.getValue());
if (!status.isOK())
return status;
vector<BSONObj> docs;
docs.push_back(doc);
getGlobalServiceContext()->getOpObserver()->onInserts(txn, ns(), docs.begin(), docs.end());
txn->recoveryUnit()->onCommit([this]() { notifyCappedWaitersIfNeeded(); });
return loc.getStatus();
}
Status Collection::_insertDocuments(OperationContext* txn,
const vector<BSONObj>::const_iterator begin,
const vector<BSONObj>::const_iterator end,
bool enforceQuota) {
dassert(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_IX));
if (isCapped() && _indexCatalog.haveAnyIndexes() && std::distance(begin, end) > 1) {
// We require that inserts to indexed capped collections be done one-at-a-time to avoid the
// possibility that a later document causes an earlier document to be deleted before it can
// be indexed.
// TODO SERVER-21512 It would be better to handle this here by just doing single inserts.
return {ErrorCodes::OperationCannotBeBatched,
"Can't batch inserts into indexed capped collections"};
}
if (_needCappedLock) {
// X-lock the metadata resource for this capped collection until the end of the WUOW. This
// prevents the primary from executing with more concurrency than secondaries.
// See SERVER-21646.
Lock::ResourceLock{txn->lockState(), ResourceId(RESOURCE_METADATA, _ns.ns()), MODE_X};
}
std::vector<Record> records;
for (auto it = begin; it != end; it++) {
Record record = {RecordId(), RecordData(it->objdata(), it->objsize())};
records.push_back(record);
}
Status status = _recordStore->insertRecords(txn, &records, _enforceQuota(enforceQuota));
if (!status.isOK())
return status;
std::vector<BsonRecord> bsonRecords;
int recordIndex = 0;
for (auto it = begin; it != end; it++) {
RecordId loc = records[recordIndex++].id;
invariant(RecordId::min() < loc);
invariant(loc < RecordId::max());
BsonRecord bsonRecord = {loc, &(*it)};
bsonRecords.push_back(bsonRecord);
}
return _indexCatalog.indexRecords(txn, bsonRecords);
}
void Collection::notifyCappedWaitersIfNeeded() {
// If there is a notifier object and another thread is waiting on it, then we notify
// waiters of this document insert. Waiters keep a shared_ptr to '_cappedNotifier', so
// there are waiters if this Collection's shared_ptr is not unique (use_count > 1).
if (_cappedNotifier && !_cappedNotifier.unique())
_cappedNotifier->notifyAll();
}
Status Collection::aboutToDeleteCapped(OperationContext* txn,
const RecordId& loc,
RecordData data) {
/* check if any cursors point to us. if so, advance them. */
_cursorManager.invalidateDocument(txn, loc, INVALIDATION_DELETION);
BSONObj doc = data.releaseToBson();
_indexCatalog.unindexRecord(txn, doc, loc, false);
return Status::OK();
}
void Collection::deleteDocument(OperationContext* txn,
const RecordId& loc,
bool fromMigrate,
bool noWarn) {
if (isCapped()) {
log() << "failing remove on a capped ns " << _ns << endl;
uasserted(10089, "cannot remove from a capped collection");
return;
}
Snapshotted<BSONObj> doc = docFor(txn, loc);
auto opObserver = getGlobalServiceContext()->getOpObserver();
OpObserver::DeleteState deleteState = opObserver->aboutToDelete(txn, ns(), doc.value());
/* check if any cursors point to us. if so, advance them. */
_cursorManager.invalidateDocument(txn, loc, INVALIDATION_DELETION);
_indexCatalog.unindexRecord(txn, doc.value(), loc, noWarn);
_recordStore->deleteRecord(txn, loc);
opObserver->onDelete(txn, ns(), std::move(deleteState), fromMigrate);
}
Counter64 moveCounter;
ServerStatusMetricField<Counter64> moveCounterDisplay("record.moves", &moveCounter);
StatusWith<RecordId> Collection::updateDocument(OperationContext* txn,
const RecordId& oldLocation,
const Snapshotted<BSONObj>& oldDoc,
const BSONObj& newDoc,
bool enforceQuota,
bool indexesAffected,
OpDebug* debug,
OplogUpdateEntryArgs* args) {
{
auto status = checkValidation(txn, newDoc);
if (!status.isOK()) {
if (_validationLevel == STRICT_V) {
return status;
}
// moderate means we have to check the old doc
auto oldDocStatus = checkValidation(txn, oldDoc.value());
if (oldDocStatus.isOK()) {
// transitioning from good -> bad is not ok
return status;
}
// bad -> bad is ok in moderate mode
}
}
dassert(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_IX));
invariant(oldDoc.snapshotId() == txn->recoveryUnit()->getSnapshotId());
invariant(newDoc.isOwned());
if (_needCappedLock) {
// X-lock the metadata resource for this capped collection until the end of the WUOW. This
// prevents the primary from executing with more concurrency than secondaries.
// See SERVER-21646.
Lock::ResourceLock{txn->lockState(), ResourceId(RESOURCE_METADATA, _ns.ns()), MODE_X};
}
SnapshotId sid = txn->recoveryUnit()->getSnapshotId();
BSONElement oldId = oldDoc.value()["_id"];
if (!oldId.eoo() && (oldId != newDoc["_id"]))
return StatusWith<RecordId>(
ErrorCodes::InternalError, "in Collection::updateDocument _id mismatch", 13596);
// The MMAPv1 storage engine implements capped collections in a way that does not allow records
// to grow beyond their original size. If MMAPv1 part of a replicaset with storage engines that
// do not have this limitation, replication could result in errors, so it is necessary to set a
// uniform rule here. Similarly, it is not sufficient to disallow growing records, because this
// happens when secondaries roll back an update shrunk a record. Exactly replicating legacy
// MMAPv1 behavior would require padding shrunk documents on all storage engines. Instead forbid
// all size changes.
const auto oldSize = oldDoc.value().objsize();
if (_recordStore->isCapped() && oldSize != newDoc.objsize())
return {ErrorCodes::CannotGrowDocumentInCappedNamespace,
str::stream() << "Cannot change the size of a document in a capped collection: "
<< oldSize << " != " << newDoc.objsize()};
// At the end of this step, we will have a map of UpdateTickets, one per index, which
// represent the index updates needed to be done, based on the changes between oldDoc and
// newDoc.
OwnedPointerMap<IndexDescriptor*, UpdateTicket> updateTickets;
if (indexesAffected) {
IndexCatalog::IndexIterator ii = _indexCatalog.getIndexIterator(txn, true);
while (ii.more()) {
IndexDescriptor* descriptor = ii.next();
IndexCatalogEntry* entry = ii.catalogEntry(descriptor);
IndexAccessMethod* iam = ii.accessMethod(descriptor);
InsertDeleteOptions options;
options.logIfError = false;
options.dupsAllowed =
!(KeyPattern::isIdKeyPattern(descriptor->keyPattern()) || descriptor->unique()) ||
repl::getGlobalReplicationCoordinator()->shouldIgnoreUniqueIndex(descriptor);
UpdateTicket* updateTicket = new UpdateTicket();
updateTickets.mutableMap()[descriptor] = updateTicket;
Status ret = iam->validateUpdate(txn,
oldDoc.value(),
newDoc,
oldLocation,
options,
updateTicket,
entry->getFilterExpression());
if (!ret.isOK()) {
return StatusWith<RecordId>(ret);
}
}
}
// This can call back into Collection::recordStoreGoingToMove. If that happens, the old
// object is removed from all indexes.
StatusWith<RecordId> newLocation = _recordStore->updateRecord(
txn, oldLocation, newDoc.objdata(), newDoc.objsize(), _enforceQuota(enforceQuota), this);
if (!newLocation.isOK()) {
return newLocation;
}
// At this point, the old object may or may not still be indexed, depending on if it was
// moved. If the object did move, we need to add the new location to all indexes.
if (newLocation.getValue() != oldLocation) {
if (debug) {
if (debug->nmoved == -1) // default of -1 rather than 0
debug->nmoved = 1;
else
debug->nmoved += 1;
}
std::vector<BsonRecord> bsonRecords;
BsonRecord bsonRecord = {newLocation.getValue(), &newDoc};
bsonRecords.push_back(bsonRecord);
Status s = _indexCatalog.indexRecords(txn, bsonRecords);
if (!s.isOK())
return StatusWith<RecordId>(s);
invariant(sid == txn->recoveryUnit()->getSnapshotId());
args->updatedDoc = newDoc;
getGlobalServiceContext()->getOpObserver()->onUpdate(txn, *args);
return newLocation;
}
// Object did not move. We update each index with each respective UpdateTicket.
if (debug)
debug->keyUpdates = 0;
if (indexesAffected) {
IndexCatalog::IndexIterator ii = _indexCatalog.getIndexIterator(txn, true);
while (ii.more()) {
IndexDescriptor* descriptor = ii.next();
IndexAccessMethod* iam = ii.accessMethod(descriptor);
int64_t updatedKeys;
Status ret = iam->update(txn, *updateTickets.mutableMap()[descriptor], &updatedKeys);
if (!ret.isOK())
return StatusWith<RecordId>(ret);
if (debug)
debug->keyUpdates += updatedKeys;
}
}
invariant(sid == txn->recoveryUnit()->getSnapshotId());
args->updatedDoc = newDoc;
getGlobalServiceContext()->getOpObserver()->onUpdate(txn, *args);
return newLocation;
}
Status Collection::recordStoreGoingToMove(OperationContext* txn,
const RecordId& oldLocation,
const char* oldBuffer,
size_t oldSize) {
moveCounter.increment();
_cursorManager.invalidateDocument(txn, oldLocation, INVALIDATION_DELETION);
_indexCatalog.unindexRecord(txn, BSONObj(oldBuffer), oldLocation, true);
return Status::OK();
}
Status Collection::recordStoreGoingToUpdateInPlace(OperationContext* txn, const RecordId& loc) {
// Broadcast the mutation so that query results stay correct.
_cursorManager.invalidateDocument(txn, loc, INVALIDATION_MUTATION);
return Status::OK();
}
bool Collection::updateWithDamagesSupported() const {
if (_validator)
return false;
return _recordStore->updateWithDamagesSupported();
}
StatusWith<RecordData> Collection::updateDocumentWithDamages(
OperationContext* txn,
const RecordId& loc,
const Snapshotted<RecordData>& oldRec,
const char* damageSource,
const mutablebson::DamageVector& damages,
OplogUpdateEntryArgs* args) {
dassert(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_IX));
invariant(oldRec.snapshotId() == txn->recoveryUnit()->getSnapshotId());
invariant(updateWithDamagesSupported());
// Broadcast the mutation so that query results stay correct.
_cursorManager.invalidateDocument(txn, loc, INVALIDATION_MUTATION);
auto newRecStatus =
_recordStore->updateWithDamages(txn, loc, oldRec.value(), damageSource, damages);
if (newRecStatus.isOK()) {
args->updatedDoc = newRecStatus.getValue().toBson();
getGlobalServiceContext()->getOpObserver()->onUpdate(txn, *args);
}
return newRecStatus;
}
bool Collection::_enforceQuota(bool userEnforeQuota) const {
if (!userEnforeQuota)
return false;
if (!mmapv1GlobalOptions.quota)
return false;
if (_ns.db() == "local")
return false;
if (_ns.isSpecial())
return false;
return true;
}
bool Collection::isCapped() const {
return _cappedNotifier.get();
}
std::shared_ptr<CappedInsertNotifier> Collection::getCappedInsertNotifier() const {
invariant(isCapped());
return _cappedNotifier;
}
uint64_t Collection::numRecords(OperationContext* txn) const {
return _recordStore->numRecords(txn);
}
uint64_t Collection::dataSize(OperationContext* txn) const {
return _recordStore->dataSize(txn);
}
uint64_t Collection::getIndexSize(OperationContext* opCtx, BSONObjBuilder* details, int scale) {
IndexCatalog* idxCatalog = getIndexCatalog();
IndexCatalog::IndexIterator ii = idxCatalog->getIndexIterator(opCtx, true);
uint64_t totalSize = 0;
while (ii.more()) {
IndexDescriptor* d = ii.next();
IndexAccessMethod* iam = idxCatalog->getIndex(d);
long long ds = iam->getSpaceUsedBytes(opCtx);
totalSize += ds;
if (details) {
details->appendNumber(d->indexName(), ds / scale);
}
}
return totalSize;
}
/**
* order will be:
* 1) store index specs
* 2) drop indexes
* 3) truncate record store
* 4) re-write indexes
*/
Status Collection::truncate(OperationContext* txn) {
dassert(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_X));
BackgroundOperation::assertNoBgOpInProgForNs(ns());
invariant(_indexCatalog.numIndexesInProgress(txn) == 0);
// 1) store index specs
vector<BSONObj> indexSpecs;
{
IndexCatalog::IndexIterator ii = _indexCatalog.getIndexIterator(txn, false);
while (ii.more()) {
const IndexDescriptor* idx = ii.next();
indexSpecs.push_back(idx->infoObj().getOwned());
}
}
// 2) drop indexes
Status status = _indexCatalog.dropAllIndexes(txn, true);
if (!status.isOK())
return status;
_cursorManager.invalidateAll(false, "collection truncated");
// 3) truncate record store
status = _recordStore->truncate(txn);
if (!status.isOK())
return status;
// 4) re-create indexes
for (size_t i = 0; i < indexSpecs.size(); i++) {
status = _indexCatalog.createIndexOnEmptyCollection(txn, indexSpecs[i]);
if (!status.isOK())
return status;
}
return Status::OK();
}
void Collection::temp_cappedTruncateAfter(OperationContext* txn, RecordId end, bool inclusive) {
dassert(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_IX));
invariant(isCapped());
BackgroundOperation::assertNoBgOpInProgForNs(ns());
invariant(_indexCatalog.numIndexesInProgress(txn) == 0);
_cursorManager.invalidateAll(false, "capped collection truncated");
_recordStore->temp_cappedTruncateAfter(txn, end, inclusive);
}
Status Collection::setValidator(OperationContext* txn, BSONObj validatorDoc) {
invariant(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_X));
// Make owned early so that the parsed match expression refers to the owned object.
if (!validatorDoc.isOwned())
validatorDoc = validatorDoc.getOwned();
auto statusWithMatcher = parseValidator(validatorDoc);
if (!statusWithMatcher.isOK())
return statusWithMatcher.getStatus();
_details->updateValidator(txn, validatorDoc, getValidationLevel(), getValidationAction());
_validator = std::move(statusWithMatcher.getValue());
_validatorDoc = std::move(validatorDoc);
return Status::OK();
}
StatusWith<Collection::ValidationLevel> Collection::_parseValidationLevel(StringData newLevel) {
if (newLevel == "") {
// default
return STRICT_V;
} else if (newLevel == "off") {
return OFF;
} else if (newLevel == "moderate") {
return MODERATE;
} else if (newLevel == "strict") {
return STRICT_V;
} else {
return Status(ErrorCodes::BadValue,
str::stream() << "invalid validation level: " << newLevel);
}
}
StatusWith<Collection::ValidationAction> Collection::_parseValidationAction(StringData newAction) {
if (newAction == "") {
// default
return ERROR_V;
} else if (newAction == "warn") {
return WARN;
} else if (newAction == "error") {
return ERROR_V;
} else {
return Status(ErrorCodes::BadValue,
str::stream() << "invalid validation action: " << newAction);
}
}
StringData Collection::getValidationLevel() const {
switch (_validationLevel) {
case STRICT_V:
return "strict";
case OFF:
return "off";
case MODERATE:
return "moderate";
}
MONGO_UNREACHABLE;
}
StringData Collection::getValidationAction() const {
switch (_validationAction) {
case ERROR_V:
return "error";
case WARN:
return "warn";
}
MONGO_UNREACHABLE;
}
Status Collection::setValidationLevel(OperationContext* txn, StringData newLevel) {
invariant(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_X));
StatusWith<ValidationLevel> status = _parseValidationLevel(newLevel);
if (!status.isOK()) {
return status.getStatus();
}
_validationLevel = status.getValue();
_details->updateValidator(txn, _validatorDoc, getValidationLevel(), getValidationAction());
return Status::OK();
}
Status Collection::setValidationAction(OperationContext* txn, StringData newAction) {
invariant(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_X));
StatusWith<ValidationAction> status = _parseValidationAction(newAction);
if (!status.isOK()) {
return status.getStatus();
}
_validationAction = status.getValue();
_details->updateValidator(txn, _validatorDoc, getValidationLevel(), getValidationAction());
return Status::OK();
}
namespace {
class MyValidateAdaptor : public ValidateAdaptor {
public:
virtual ~MyValidateAdaptor() {}
virtual Status validate(const RecordData& record, size_t* dataSize) {
BSONObj obj = record.toBson();
const Status status = validateBSON(obj.objdata(), obj.objsize());
if (status.isOK())
*dataSize = obj.objsize();
return Status::OK();
}
};
void validateIndexKeyCount(OperationContext* txn,
const IndexDescriptor& idx,
int64_t numIdxKeys,
int64_t numRecs,
ValidateResults* results) {
if (idx.isIdIndex() && numIdxKeys != numRecs) {
string msg = str::stream() << "number of _id index entries (" << numIdxKeys
<< ") does not match the number of documents (" << numRecs
<< ")";
if (!failIndexKeyTooLong && (numIdxKeys < numRecs)) {
results->warnings.push_back(msg);
} else {
results->errors.push_back(msg);
results->valid = false;
}
return; // Avoid failing the next two checks, they just add redundant/confusing messages
}
if (!idx.isMultikey(txn) && numIdxKeys > numRecs) {
string err = str::stream() << "index " << idx.indexName()
<< " is not multi-key, but has more entries (" << numIdxKeys
<< ") than documents (" << numRecs << ")";
results->errors.push_back(err);
results->valid = false;
}
// If an access method name is given, the index may be a full text, geo or special
// index plugin with different semantics.
if (!idx.isSparse() && !idx.isPartial() && idx.getAccessMethodName() == "" &&
numIdxKeys < numRecs) {
string msg = str::stream() << "index " << idx.indexName()
<< " is not sparse or partial, but has fewer entries ("
<< numIdxKeys << ") than documents (" << numRecs << ")";
if (!failIndexKeyTooLong) {
results->warnings.push_back(msg);
} else {
results->errors.push_back(msg);
results->valid = false;
}
}
}
} // namespace
Status Collection::validate(OperationContext* txn,
bool full,
bool scanData,
ValidateResults* results,
BSONObjBuilder* output) {
dassert(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_IS));
MyValidateAdaptor adaptor;
Status status = _recordStore->validate(txn, full, scanData, &adaptor, results, output);
if (!status.isOK())
return status;
{ // indexes
if (!failIndexKeyTooLong) {
string warning =
"The server is configured with the failIndexKeyTooLong parameter set to false. "
"Validation failures that result from having fewer index entries than documents "
"have been downgraded from errors to warnings";
results->warnings.push_back(warning);
}
output->append("nIndexes", _indexCatalog.numIndexesReady(txn));
int idxn = 0;
try {
// Only applicable when 'full' validation is requested.
std::unique_ptr<BSONObjBuilder> indexDetails(full ? new BSONObjBuilder() : NULL);
BSONObjBuilder indexes; // not using subObjStart to be exception safe
IndexCatalog::IndexIterator i = _indexCatalog.getIndexIterator(txn, false);
while (i.more()) {
const IndexDescriptor* descriptor = i.next();
log(LogComponent::kIndex) << "validating index " << descriptor->indexNamespace()
<< endl;
IndexAccessMethod* iam = _indexCatalog.getIndex(descriptor);
invariant(iam);
ValidateResults curIndexResults;
int64_t keys;
iam->validate(txn, full, &keys, &curIndexResults);
indexes.appendNumber(descriptor->indexNamespace(), static_cast<long long>(keys));
validateIndexKeyCount(
txn, *descriptor, keys, _recordStore->numRecords(txn), &curIndexResults);
if (indexDetails.get()) {
BSONObjBuilder bob(indexDetails->subobjStart(descriptor->indexNamespace()));
bob.appendBool("valid", curIndexResults.valid);
if (!curIndexResults.warnings.empty()) {
bob.append("warnings", curIndexResults.warnings);
}
if (!curIndexResults.errors.empty()) {
bob.append("errors", curIndexResults.errors);
}
}
if (!curIndexResults.valid) {
results->warnings.insert(results->warnings.end(),
curIndexResults.warnings.begin(),
curIndexResults.warnings.end());
results->errors.insert(results->errors.end(),
curIndexResults.errors.begin(),
curIndexResults.errors.end());
results->valid = false;
}
idxn++;
}
output->append("keysPerIndex", indexes.done());
if (indexDetails.get()) {
output->append("indexDetails", indexDetails->done());
}
} catch (DBException& exc) {
string err = str::stream() << "exception during index validate idxn "
<< BSONObjBuilder::numStr(idxn) << ": " << exc.toString();
results->errors.push_back(err);
results->valid = false;
}
}
return Status::OK();
}
Status Collection::touch(OperationContext* txn,
bool touchData,
bool touchIndexes,
BSONObjBuilder* output) const {
if (touchData) {
BSONObjBuilder b;
Status status = _recordStore->touch(txn, &b);
if (!status.isOK())
return status;
output->append("data", b.obj());
}
if (touchIndexes) {
Timer t;
IndexCatalog::IndexIterator ii = _indexCatalog.getIndexIterator(txn, false);
while (ii.more()) {
const IndexDescriptor* desc = ii.next();
const IndexAccessMethod* iam = _indexCatalog.getIndex(desc);
Status status = iam->touch(txn);
if (!status.isOK())
return status;
}
output->append("indexes",
BSON("num" << _indexCatalog.numIndexesTotal(txn) << "millis" << t.millis()));
}
return Status::OK();
}
}
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