foundationdb/fdbcli/ConsistencyCheckCommand.act...

70 lines
2.7 KiB
C++

/*
* ConsistencyCheckCommand.actor.cpp
*
* This source file is part of the FoundationDB open source project
*
* Copyright 2013-2022 Apple Inc. and the FoundationDB project authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "fdbcli/fdbcli.actor.h"
#include "fdbclient/FDBOptions.g.h"
#include "fdbclient/IClientApi.h"
#include "flow/Arena.h"
#include "flow/FastRef.h"
#include "flow/ThreadHelper.actor.h"
#include "flow/actorcompiler.h" // This must be the last #include.
namespace fdb_cli {
const KeyRef consistencyCheckSpecialKey = LiteralStringRef("\xff\xff/management/consistency_check_suspended");
ACTOR Future<bool> consistencyCheckCommandActor(Reference<ITransaction> tr,
std::vector<StringRef> tokens,
bool intrans) {
// Here we do not proceed in a try-catch loop since the transaction is always supposed to succeed.
// If not, the outer loop catch block(fdbcli.actor.cpp) will handle the error and print out the error message
tr->setOption(FDBTransactionOptions::SPECIAL_KEY_SPACE_ENABLE_WRITES);
if (tokens.size() == 1) {
// hold the returned standalone object's memory
state ThreadFuture<Optional<Value>> suspendedF = tr->get(consistencyCheckSpecialKey);
Optional<Value> suspended = wait(safeThreadFutureToFuture(suspendedF));
printf("ConsistencyCheck is %s\n", suspended.present() ? "off" : "on");
} else if (tokens.size() == 2 && tokencmp(tokens[1], "off")) {
tr->set(consistencyCheckSpecialKey, Value());
if (!intrans)
wait(safeThreadFutureToFuture(tr->commit()));
} else if (tokens.size() == 2 && tokencmp(tokens[1], "on")) {
tr->clear(consistencyCheckSpecialKey);
if (!intrans)
wait(safeThreadFutureToFuture(tr->commit()));
} else {
printUsage(tokens[0]);
return false;
}
return true;
}
CommandFactory consistencyCheckFactory(
"consistencycheck",
CommandHelp(
"consistencycheck [on|off]",
"permits or prevents consistency checking",
"Calling this command with `on' permits consistency check processes to run and `off' will halt their checking. "
"Calling this command with no arguments will display if consistency checking is currently allowed.\n"));
} // namespace fdb_cli