bf70ee3986
The handler is intended to be called when internal invariants are violated and the operation cannot safely continue. The handler either throws (default) or aborts, depending on configuration option. Passing --abort-on-internal-error on the command line will switch to aborting. The reason we don't abort by default is that it may bring the whole cluster down and cause unavailability, while it may not be necessary to do so. It's safer to fail just the affected operation, e.g. repair. However, failing the operation with an exception leaves little information for debugging the root cause. So the idea is that the user would enable aborts on only one of the nodes in the cluster to get a core dump and not bring the whole cluster down.
86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
/*
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* Copyright 2015 ScyllaDB
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*/
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/* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <seastar/core/print.hh>
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#include <seastar/util/log.hh>
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#include <seastar/util/backtrace.hh>
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#include <exception>
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#include <system_error>
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#include <atomic>
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#include "exceptions.hh"
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#include <iostream>
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bool check_exception(system_error_lambda_t f)
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{
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auto e = std::current_exception();
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if (!e) {
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return false;
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}
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try {
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std::rethrow_exception(e);
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} catch (std::system_error &e) {
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return f(e);
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} catch (...) {
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return false;
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}
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return false;
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}
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bool is_system_error_errno(int err_no)
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{
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return check_exception([err_no] (const std::system_error &e) {
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auto code = e.code();
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return code.value() == err_no &&
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code.category() == std::system_category();
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});
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}
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bool should_stop_on_system_error(const std::system_error& e) {
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if (e.code().category() == std::system_category()) {
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// Whitelist of errors that don't require us to stop the server:
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switch (e.code().value()) {
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case EEXIST:
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case ENOENT:
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return false;
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default:
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break;
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}
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}
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return true;
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}
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std::atomic<bool> abort_on_internal_error{false};
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void set_abort_on_internal_error(bool do_abort) {
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abort_on_internal_error.store(do_abort);
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}
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void on_internal_error(seastar::logger& logger, const seastar::sstring& msg) {
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if (abort_on_internal_error.load()) {
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logger.error("{}, at: {}", msg.c_str(), seastar::current_backtrace());
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abort();
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} else {
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seastar::throw_with_backtrace<std::runtime_error>(msg.c_str());
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}
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}
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