122 lines
4.2 KiB
C++
122 lines
4.2 KiB
C++
/*
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* ConsistencyScanCommand.actor.cpp
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2022 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "fdbcli/fdbcli.actor.h"
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#include "fdbclient/FDBOptions.g.h"
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#include "fdbclient/IClientApi.h"
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#include "flow/Arena.h"
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#include "flow/FastRef.h"
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#include "flow/ThreadHelper.actor.h"
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#include "fdbclient/ConsistencyScanInterface.actor.h"
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#include "flow/actorcompiler.h" // This must be the last #include.
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namespace fdb_cli {
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ACTOR Future<bool> consistencyScanCommandActor(Database db, std::vector<StringRef> tokens) {
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state Reference<ReadYourWritesTransaction> tr = makeReference<ReadYourWritesTransaction>(db);
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// Here we do not proceed in a try-catch loop since the transaction is always supposed to succeed.
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// If not, the outer loop catch block(fdbcli.actor.cpp) will handle the error and print out the error message
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state int usageError = 0;
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state ConsistencyScanInfo csInfo = ConsistencyScanInfo();
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tr->setOption(FDBTransactionOptions::SPECIAL_KEY_SPACE_ENABLE_WRITES);
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tr->setOption(FDBTransactionOptions::PRIORITY_SYSTEM_IMMEDIATE);
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// Get the exisiting consistencyScanInfo object if present
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state Optional<Value> consistencyScanInfo = wait(ConsistencyScanInfo::getInfo(tr));
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wait(tr->commit());
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if (consistencyScanInfo.present())
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csInfo = ObjectReader::fromStringRef<ConsistencyScanInfo>(consistencyScanInfo.get(), IncludeVersion());
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tr->reset();
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if (tokens.size() == 1) {
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printf("Consistency Scan Info: %s\n", csInfo.toString().c_str());
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} else if ((tokens.size() == 2) && tokencmp(tokens[1], "off")) {
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csInfo.consistency_scan_enabled = false;
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wait(ConsistencyScanInfo::setInfo(tr, csInfo));
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wait(tr->commit());
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} else if ((tokencmp(tokens[1], "on") && tokens.size() > 2)) {
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csInfo.consistency_scan_enabled = true;
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state std::vector<StringRef>::iterator t;
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for (t = tokens.begin() + 2; t != tokens.end(); ++t) {
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if (tokencmp(t->toString(), "restart")) {
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if (++t != tokens.end()) {
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if (tokencmp(t->toString(), "0")) {
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csInfo.restart = false;
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} else if (tokencmp(t->toString(), "1")) {
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csInfo.restart = true;
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} else {
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usageError = 1;
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}
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} else {
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usageError = 1;
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}
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} else if (tokencmp(t->toString(), "maxRate")) {
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if (++t != tokens.end()) {
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char* end;
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csInfo.max_rate = std::strtod(t->toString().data(), &end);
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if (!std::isspace(*end) && (*end != '\0')) {
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fprintf(stderr, "ERROR: %s failed to parse.\n", t->toString().c_str());
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return false;
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}
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} else {
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usageError = 1;
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}
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} else if (tokencmp(t->toString(), "targetInterval")) {
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if (++t != tokens.end()) {
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char* end;
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csInfo.target_interval = std::strtod(t->toString().data(), &end);
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if (!std::isspace(*end) && (*end != '\0')) {
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fprintf(stderr, "ERROR: %s failed to parse.\n", t->toString().c_str());
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return false;
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}
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} else {
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usageError = 1;
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}
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} else {
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usageError = 1;
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}
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}
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if (!usageError) {
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wait(ConsistencyScanInfo::setInfo(tr, csInfo));
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wait(tr->commit());
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}
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} else {
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usageError = 1;
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}
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if (usageError) {
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printUsage(tokens[0]);
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return false;
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}
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return true;
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}
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CommandFactory consistencyScanFactory(
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"consistencyscan",
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CommandHelp("consistencyscan <on|off> <restart 0|1> <maxRate val> <targetInterval val>",
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"enables or disables consistency scan",
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"Calling this command with `on' enables the consistency scan process to run the scan with given "
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"arguments and `off' will halt the scan. "
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"Calling this command with no arguments will display if consistency scan is currently enabled.\n"));
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} // namespace fdb_cli
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