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/**
* Copyright (C) 2018 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::kCommand
#include "mongo/platform/basic.h"
#include "mongo/db/commands.h"
#include "mongo/db/commands/test_commands_enabled.h"
#include "mongo/db/concurrency/d_concurrency.h"
#include "mongo/util/log.h"
namespace mongo {
/* for diagnostic / testing purposes. Enabled via command line. */
class CmdSleep : public BasicCommand {
public:
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return false;
}
virtual bool adminOnly() const {
return true;
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kAlways;
}
std::string help() const override {
return "internal testing command. Run a no-op command for an arbitrary amount of time. "
"If neither 'secs' nor 'millis' is set, command will sleep for 10 seconds. "
"If both are set, command will sleep for the sum of 'secs' and 'millis.'\n"
" w:<bool> (deprecated: use 'lock' instead) if true, takes a write lock.\n"
" lock: r, w, none. If r or w, db will block under a lock. Defaults to r."
" 'lock' and 'w' may not both be set.\n"
" secs:<seconds> Amount of time to sleep, in seconds.\n"
" millis:<milliseconds> Amount of time to sleep, in ms.\n";
}
// 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 {}
void _sleepInLock(mongo::OperationContext* opCtx,
long long millis,
LockMode mode,
const StringData& ns) {
if (ns.empty()) {
Lock::GlobalLock lk(opCtx, mode, opCtx->getDeadline(), Lock::InterruptBehavior::kThrow);
opCtx->sleepFor(Milliseconds(millis));
} else if (nsIsDbOnly(ns)) {
uassert(50961, "lockTarget is not a valid namespace", NamespaceString::validDBName(ns));
Lock::DBLock lk(opCtx, ns, mode, opCtx->getDeadline());
opCtx->sleepFor(Milliseconds(millis));
} else {
uassert(50962,
"lockTarget is not a valid namespace",
NamespaceString::validCollectionComponent(ns));
Lock::CollectionLock lk(opCtx->lockState(), ns, mode, opCtx->getDeadline());
opCtx->sleepFor(Milliseconds(millis));
}
}
CmdSleep() : BasicCommand("sleep") {}
bool run(OperationContext* opCtx,
const std::string& ns,
const BSONObj& cmdObj,
BSONObjBuilder& result) {
log() << "test only command sleep invoked";
long long millis = 0;
if (cmdObj["secs"] || cmdObj["millis"]) {
if (cmdObj["secs"]) {
uassert(34344, "'secs' must be a number.", cmdObj["secs"].isNumber());
millis += cmdObj["secs"].numberLong() * 1000;
}
if (cmdObj["millis"]) {
uassert(34345, "'millis' must be a number.", cmdObj["millis"].isNumber());
millis += cmdObj["millis"].numberLong();
}
} else {
millis = 10 * 1000;
}
StringData lockTarget;
if (cmdObj["lockTarget"]) {
lockTarget = cmdObj["lockTarget"].checkAndGetStringData();
}
if (!cmdObj["lock"]) {
// Legacy implementation
if (cmdObj.getBoolField("w")) {
_sleepInLock(opCtx, millis, MODE_X, lockTarget);
} else {
_sleepInLock(opCtx, millis, MODE_S, lockTarget);
}
} else {
uassert(34346, "Only one of 'w' and 'lock' may be set.", !cmdObj["w"]);
std::string lock(cmdObj.getStringField("lock"));
if (lock == "none") {
opCtx->sleepFor(Milliseconds(millis));
} else if (lock == "w") {
_sleepInLock(opCtx, millis, MODE_X, lockTarget);
} else {
uassert(34347, "'lock' must be one of 'r', 'w', 'none'.", lock == "r");
_sleepInLock(opCtx, millis, MODE_S, lockTarget);
}
}
// Interrupt point for testing (e.g. maxTimeMS).
opCtx->checkForInterrupt();
return true;
}
};
MONGO_REGISTER_TEST_COMMAND(CmdSleep);
} // namespace
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