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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::kCommand
#include <string>
#include "mongo/platform/basic.h"
#include "mongo/base/init.h"
#include "mongo/base/initializer_context.h"
#include "mongo/db/catalog/capped_utils.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/client.h"
#include "mongo/db/commands.h"
#include "mongo/db/commands/test_commands_enabled.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/index_builds_coordinator.h"
#include "mongo/db/op_observer.h"
#include "mongo/db/query/internal_plans.h"
#include "mongo/db/service_context.h"
#include "mongo/util/log.h"
namespace mongo {
using repl::UnreplicatedWritesBlock;
using std::endl;
using std::string;
using std::stringstream;
/* For testing only, not for general use. Enabled via command-line */
class GodInsert : public ErrmsgCommandDeprecated {
public:
GodInsert() : ErrmsgCommandDeprecated("godinsert") {}
virtual bool adminOnly() const {
return false;
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kAlways;
}
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return true;
}
// No auth needed because it only works when enabled via command line.
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) const {}
std::string help() const override {
return "internal. for testing only.";
}
virtual bool errmsgRun(OperationContext* opCtx,
const string& dbname,
const BSONObj& cmdObj,
string& errmsg,
BSONObjBuilder& result) {
const NamespaceString nss(CommandHelpers::parseNsCollectionRequired(dbname, cmdObj));
log() << "test only command godinsert invoked coll:" << nss.coll();
BSONObj obj = cmdObj["obj"].embeddedObjectUserCheck();
Lock::DBLock lk(opCtx, dbname, MODE_X);
OldClientContext ctx(opCtx, nss.ns());
Database* db = ctx.db();
WriteUnitOfWork wunit(opCtx);
UnreplicatedWritesBlock unreplicatedWritesBlock(opCtx);
Collection* collection = CollectionCatalog::get(opCtx).lookupCollectionByNamespace(nss);
if (!collection) {
collection = db->createCollection(opCtx, nss);
if (!collection) {
errmsg = "could not create collection";
return false;
}
}
OpDebug* const nullOpDebug = nullptr;
Status status = collection->insertDocument(opCtx, InsertStatement(obj), nullOpDebug, false);
if (status.isOK()) {
wunit.commit();
}
uassertStatusOK(status);
return true;
}
};
MONGO_REGISTER_TEST_COMMAND(GodInsert);
// Testing only, enabled via command-line.
class CapTrunc : public BasicCommand {
public:
CapTrunc() : BasicCommand("captrunc") {}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kNever;
}
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return true;
}
// No auth needed because it only works when enabled via command line.
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) const {}
virtual bool run(OperationContext* opCtx,
const string& dbname,
const BSONObj& cmdObj,
BSONObjBuilder& result) {
const NamespaceString fullNs = CommandHelpers::parseNsCollectionRequired(dbname, cmdObj);
if (!fullNs.isValid()) {
uasserted(ErrorCodes::InvalidNamespace,
str::stream() << "collection name " << fullNs.ns() << " is not valid");
}
int n = cmdObj.getIntField("n");
bool inc = cmdObj.getBoolField("inc"); // inclusive range?
if (n <= 0) {
uasserted(ErrorCodes::BadValue, "n must be a positive integer");
}
// Lock the database in mode IX and lock the collection exclusively.
AutoGetCollection autoColl(opCtx, fullNs, MODE_X);
Collection* collection = autoColl.getCollection();
if (!collection) {
uasserted(ErrorCodes::NamespaceNotFound,
str::stream() << "collection " << fullNs.ns() << " does not exist");
}
if (!collection->isCapped()) {
uasserted(ErrorCodes::IllegalOperation, "collection must be capped");
}
RecordId end;
{
// Scan backwards through the collection to find the document to start truncating from.
// We will remove 'n' documents, so start truncating from the (n + 1)th document to the
// end.
auto exec = InternalPlanner::collectionScan(
opCtx, fullNs.ns(), collection, PlanExecutor::NO_YIELD, InternalPlanner::BACKWARD);
for (int i = 0; i < n + 1; ++i) {
PlanExecutor::ExecState state = exec->getNext(nullptr, &end);
if (PlanExecutor::ADVANCED != state) {
uasserted(ErrorCodes::IllegalOperation,
str::stream() << "invalid n, collection contains fewer than " << n
<< " documents");
}
}
}
BackgroundOperation::assertNoBgOpInProgForNs(fullNs.ns());
IndexBuildsCoordinator::get(opCtx)->assertNoIndexBuildInProgForCollection(
collection->uuid());
collection->cappedTruncateAfter(opCtx, end, inc);
return true;
}
};
MONGO_REGISTER_TEST_COMMAND(CapTrunc);
// Testing-only, enabled via command line.
class EmptyCapped : public BasicCommand {
public:
EmptyCapped() : BasicCommand("emptycapped") {}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kNever;
}
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return true;
}
// No auth needed because it only works when enabled via command line.
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) const {}
virtual bool run(OperationContext* opCtx,
const string& dbname,
const BSONObj& cmdObj,
BSONObjBuilder& result) {
const NamespaceString nss = CommandHelpers::parseNsCollectionRequired(dbname, cmdObj);
uassertStatusOK(emptyCapped(opCtx, nss));
return true;
}
};
MONGO_REGISTER_TEST_COMMAND(EmptyCapped);
} // namespace mongo
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