134 lines
4.8 KiB
C++
134 lines
4.8 KiB
C++
/*
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* KillCommand.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 "boost/algorithm/string.hpp"
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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 "fdbclient/Knobs.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 "flow/CodeProbe.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> killCommandActor(Reference<IDatabase> db,
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Reference<ITransaction> tr,
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std::vector<StringRef> tokens,
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std::map<Key, std::pair<Value, ClientLeaderRegInterface>>* address_interface) {
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ASSERT(tokens.size() >= 1);
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state bool result = true;
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state std::string addressesStr;
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if (tokens.size() == 1) {
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// initialize worker interfaces
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address_interface->clear();
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wait(getWorkerInterfaces(tr, address_interface, true));
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}
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if (tokens.size() == 1 || tokencmp(tokens[1], "list")) {
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if (address_interface->size() == 0) {
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printf("\nNo addresses can be killed.\n");
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} else if (address_interface->size() == 1) {
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printf("\nThe following address can be killed:\n");
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} else {
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printf("\nThe following %zu addresses can be killed:\n", address_interface->size());
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}
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for (auto it : *address_interface) {
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printf("%s\n", printable(it.first).c_str());
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}
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printf("\n");
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} else if (tokencmp(tokens[1], "all")) {
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if (address_interface->size() == 0) {
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result = false;
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fprintf(stderr,
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"ERROR: no processes to kill. You must run the `kill’ command before "
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"running `kill all’.\n");
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} else {
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std::vector<std::string> addressesVec;
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for (const auto& [address, _] : *address_interface) {
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addressesVec.push_back(address.toString());
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}
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addressesStr = boost::algorithm::join(addressesVec, ",");
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// make sure we only call the interface once to send requests in parallel
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int64_t killRequestsSent = wait(safeThreadFutureToFuture(db->rebootWorker(addressesStr, false, 0)));
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if (!killRequestsSent) {
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result = false;
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fprintf(stderr,
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"ERROR: failed to send requests to all processes, please run the `kill’ command again to fetch "
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"latest addresses.\n");
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} else {
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printf("Attempted to kill %zu processes\n", address_interface->size());
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}
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}
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} else {
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state int i;
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for (i = 1; i < tokens.size(); i++) {
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if (!address_interface->count(tokens[i])) {
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fprintf(stderr, "ERROR: process `%s' not recognized.\n", printable(tokens[i]).c_str());
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result = false;
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break;
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}
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}
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if (result) {
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std::vector<std::string> addressesVec;
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for (i = 1; i < tokens.size(); i++) {
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addressesVec.push_back(tokens[i].toString());
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}
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addressesStr = boost::algorithm::join(addressesVec, ",");
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int64_t killRequestsSent = wait(safeThreadFutureToFuture(db->rebootWorker(addressesStr, false, 0)));
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if (!killRequestsSent) {
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result = false;
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fprintf(stderr,
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"ERROR: failed to send requests to kill processes `%s', please run the `kill’ command again to "
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"fetch latest addresses.\n",
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addressesStr.c_str());
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} else {
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printf("Attempted to kill %zu processes\n", tokens.size() - 1);
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}
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}
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}
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return result;
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}
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void killGenerator(const char* text,
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const char* line,
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std::vector<std::string>& lc,
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std::vector<StringRef> const& tokens) {
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const char* opts[] = { "all", "list", nullptr };
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arrayGenerator(text, line, opts, lc);
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}
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CommandFactory killFactory(
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"kill",
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CommandHelp(
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"kill all|list|<ADDRESS...>",
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"attempts to kill one or more processes in the cluster",
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"If no addresses are specified, populates the list of processes which can be killed. Processes cannot be "
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"killed before this list has been populated.\n\nIf `all' is specified, attempts to kill all known "
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"processes.\n\nIf `list' is specified, displays all known processes. This is only useful when the database is "
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"unresponsive.\n\nFor each IP:port pair in <ADDRESS ...>, attempt to kill the specified process."),
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&killGenerator);
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} // namespace fdb_cli
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