foundationdb/fdbcli/AdvanceVersionCommand.actor...

76 lines
2.5 KiB
C++

/*
* AdvanceVersionCommand.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 "boost/lexical_cast.hpp"
#include "fmt/format.h"
#include "fdbcli/fdbcli.actor.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 advanceVersionSpecialKey = LiteralStringRef("\xff\xff/management/min_required_commit_version");
ACTOR Future<bool> advanceVersionCommandActor(Reference<IDatabase> db, std::vector<StringRef> tokens) {
if (tokens.size() != 2) {
printUsage(tokens[0]);
return false;
} else {
state Version v;
int n = 0;
if (sscanf(tokens[1].toString().c_str(), "%" PRId64 "%n", &v, &n) != 1 || n != tokens[1].size()) {
printUsage(tokens[0]);
return false;
} else {
state Reference<ITransaction> tr = db->createTransaction();
loop {
tr->setOption(FDBTransactionOptions::SPECIAL_KEY_SPACE_ENABLE_WRITES);
try {
Version rv = wait(safeThreadFutureToFuture(tr->getReadVersion()));
if (rv <= v) {
tr->set(advanceVersionSpecialKey, boost::lexical_cast<std::string>(v));
wait(safeThreadFutureToFuture(tr->commit()));
} else {
fmt::print("Current read version is {}\n", rv);
return true;
}
} catch (Error& e) {
wait(safeThreadFutureToFuture(tr->onError(e)));
}
}
}
}
}
CommandFactory advanceVersionFactory(
"advanceversion",
CommandHelp(
"advanceversion <VERSION>",
"Force the cluster to recover at the specified version",
"Forces the cluster to recover at the specified version. If the specified version is larger than the current "
"version of the cluster, the cluster version is advanced "
"to the specified version via a forced recovery."));
} // namespace fdb_cli