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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_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kIndex
#include "mongo/platform/basic.h"
#include "mongo/db/catalog/index_catalog.h"
#include "mongo/db/index/index_descriptor.h"
namespace mongo {
using IndexIterator = IndexCatalog::IndexIterator;
using ReadyIndexesIterator = IndexCatalog::ReadyIndexesIterator;
using AllIndexesIterator = IndexCatalog::AllIndexesIterator;
bool IndexIterator::more() {
if (_start) {
_next = _advance();
_start = false;
}
return _next != nullptr;
}
const IndexCatalogEntry* IndexIterator::next() {
if (!more())
return nullptr;
_prev = _next;
_next = _advance();
return _prev;
}
ReadyIndexesIterator::ReadyIndexesIterator(OperationContext* const opCtx,
IndexCatalogEntryContainer::const_iterator beginIterator,
IndexCatalogEntryContainer::const_iterator endIterator)
: _opCtx(opCtx), _iterator(beginIterator), _endIterator(endIterator) {}
const IndexCatalogEntry* ReadyIndexesIterator::_advance() {
while (_iterator != _endIterator) {
IndexCatalogEntry* entry = _iterator->get();
++_iterator;
if (auto minSnapshot = entry->getMinimumVisibleSnapshot()) {
auto mySnapshot = _opCtx->recoveryUnit()->getPointInTimeReadTimestamp().get_value_or(
_opCtx->recoveryUnit()->getCatalogConflictingTimestamp());
if (!mySnapshot.isNull() && mySnapshot < minSnapshot.get()) {
// This index isn't finished in my snapshot.
continue;
}
}
return entry;
}
return nullptr;
}
AllIndexesIterator::AllIndexesIterator(
OperationContext* const opCtx, std::unique_ptr<std::vector<IndexCatalogEntry*>> ownedContainer)
: _opCtx(opCtx), _ownedContainer(std::move(ownedContainer)) {
// Explicitly order calls onto the ownedContainer with respect to its move.
_iterator = _ownedContainer->begin();
_endIterator = _ownedContainer->end();
}
const IndexCatalogEntry* AllIndexesIterator::_advance() {
if (_iterator == _endIterator) {
return nullptr;
}
IndexCatalogEntry* entry = *_iterator;
++_iterator;
return entry;
}
StringData toString(IndexBuildMethod method) {
switch (method) {
case IndexBuildMethod::kHybrid:
return "Hybrid"_sd;
case IndexBuildMethod::kBackground:
return "Background"_sd;
case IndexBuildMethod::kForeground:
return "Foreground"_sd;
}
MONGO_UNREACHABLE;
}
} // namespace mongo
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