/**
 *    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.
 */

#include "mongo/platform/basic.h"

#include "mongo/db/ttl_collection_cache.h"

#include <algorithm>

#include "mongo/db/service_context.h"

namespace mongo {

namespace {
const auto getTTLCollectionCache = ServiceContext::declareDecoration<TTLCollectionCache>();
}

TTLCollectionCache& TTLCollectionCache::get(ServiceContext* ctx) {
    return getTTLCollectionCache(ctx);
}

void TTLCollectionCache::registerCollection(const NamespaceString& collectionNS) {
    stdx::lock_guard<stdx::mutex> lock(_ttlCollectionsLock);
    _ttlCollections.push_back(collectionNS.ns());
}

void TTLCollectionCache::unregisterCollection(const NamespaceString& collectionNS) {
    stdx::lock_guard<stdx::mutex> lock(_ttlCollectionsLock);
    auto collIter = std::find(_ttlCollections.begin(), _ttlCollections.end(), collectionNS.ns());
    fassert(40220, collIter != _ttlCollections.end());
    _ttlCollections.erase(collIter);
}

std::vector<std::string> TTLCollectionCache::getCollections() {
    stdx::lock_guard<stdx::mutex> lock(_ttlCollectionsLock);
    return _ttlCollections;
}
};  // namespace mongo