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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kStorage
#include "mongo/platform/basic.h"
#include "mongo/db/catalog/collection.h"
#include <sstream>
namespace mongo {
//
// CappedInsertNotifier
//
void CappedInsertNotifier::notifyAll() const {
stdx::lock_guard<Latch> lk(_mutex);
++_version;
_notifier.notify_all();
}
void CappedInsertNotifier::waitUntil(uint64_t prevVersion, Date_t deadline) const {
stdx::unique_lock<Latch> lk(_mutex);
while (!_dead && prevVersion == _version) {
if (stdx::cv_status::timeout == _notifier.wait_until(lk, deadline.toSystemTimePoint())) {
return;
}
}
}
void CappedInsertNotifier::kill() {
stdx::lock_guard<Latch> lk(_mutex);
_dead = true;
_notifier.notify_all();
}
bool CappedInsertNotifier::isDead() {
stdx::lock_guard<Latch> lk(_mutex);
return _dead;
}
// We can't reference the catalog from this library as it would create a cyclic library dependency.
// Setup a weak dependency using a std::function that is installed by the catalog lib
std::function<CollectionPtr(OperationContext*, CollectionUUID)>& _catalogLookup() {
static std::function<CollectionPtr(OperationContext*, CollectionUUID)> func;
return func;
}
void CollectionPtr::installCatalogLookupImpl(
std::function<CollectionPtr(OperationContext*, CollectionUUID)> impl) {
_catalogLookup() = std::move(impl);
}
CollectionPtr CollectionPtr::null;
CollectionPtr::CollectionPtr() : _collection(nullptr), _opCtx(nullptr) {}
CollectionPtr::CollectionPtr(OperationContext* opCtx, const Collection* collection)
: _collection(collection), _opCtx(opCtx) {}
CollectionPtr::CollectionPtr(const Collection* collection, NoYieldTag)
: CollectionPtr(nullptr, collection) {}
CollectionPtr::CollectionPtr(Collection* collection) : CollectionPtr(collection, NoYieldTag{}) {}
CollectionPtr::CollectionPtr(const std::shared_ptr<const Collection>& collection)
: CollectionPtr(collection.get(), NoYieldTag{}) {}
CollectionPtr::CollectionPtr(CollectionPtr&&) = default;
CollectionPtr::~CollectionPtr() {}
CollectionPtr& CollectionPtr::operator=(CollectionPtr&&) = default;
CollectionPtr CollectionPtr::detached() const {
return CollectionPtr(_opCtx, _collection);
}
bool CollectionPtr::_canYield() const {
// We only set the opCtx when we use a constructor that allows yielding.
// When we are doing a lock free read or having a writable pointer in a WUOW it is not allowed
// to yield.
return _opCtx;
}
void CollectionPtr::yield() const {
// Yield if we are yieldable and have a valid collection
if (_canYield() && _collection) {
_uuid = _collection->uuid();
_collection = nullptr;
}
}
void CollectionPtr::restore() const {
// Restore from yield if we are yieldable and if uuid was set in a previous yield.
if (_canYield() && _uuid) {
// We may only do yield restore when we were holding locks that was yielded so we need to
// refresh from the catalog to make sure we have a valid collection pointer.
auto coll = _catalogLookup()(_opCtx, *_uuid);
if (coll) {
_collection = coll.get();
}
_uuid.reset();
}
}
// ----
namespace {
const auto getFactory = ServiceContext::declareDecoration<std::unique_ptr<Collection::Factory>>();
}
Collection::Factory* Collection::Factory::get(ServiceContext* service) {
return getFactory(service).get();
}
Collection::Factory* Collection::Factory::get(OperationContext* opCtx) {
return getFactory(opCtx->getServiceContext()).get();
};
void Collection::Factory::set(ServiceContext* service,
std::unique_ptr<Collection::Factory> newFactory) {
auto& factory = getFactory(service);
factory = std::move(newFactory);
}
// static
Status Collection::parseValidationLevel(StringData newLevel) {
if (newLevel == "") {
// default
return Status::OK();
} else if (newLevel == "off") {
return Status::OK();
} else if (newLevel == "moderate") {
return Status::OK();
} else if (newLevel == "strict") {
return Status::OK();
} else {
return Status(ErrorCodes::BadValue,
str::stream() << "invalid validation level: " << newLevel);
}
}
// static
Status Collection::parseValidationAction(StringData newAction) {
if (newAction == "") {
// default
return Status::OK();
} else if (newAction == "warn") {
return Status::OK();
} else if (newAction == "error") {
return Status::OK();
} else {
return Status(ErrorCodes::BadValue,
str::stream() << "invalid validation action: " << newAction);
}
}
} // namespace mongo
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