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https://github.com/scylladb/scylladb.git
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44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
/*
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* Copyright (C) 2017-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
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*/
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#pragma once
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#include <seastar/core/sstring.hh>
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#include <seastar/core/format.hh>
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#include <seastar/util/log.hh>
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#include "seastarx.hh"
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#include <systemd/sd-daemon.h>
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extern logger startlog;
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class supervisor {
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public:
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static constexpr auto systemd_ready_msg = "READY=1";
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/** A systemd status message has a format <status message prefix>=<message> */
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static constexpr auto systemd_status_msg_prefix = "STATUS";
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public:
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/**
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* @brief Notify the Supervisor with the given message.
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* @param msg message to notify the Supervisor with
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* @param ready set to TRUE when scylla service becomes ready
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*/
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static inline void notify(sstring msg, bool ready = false) {
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startlog.info("{}", msg);
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try_notify_systemd(msg, ready);
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}
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private:
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static inline void try_notify_systemd(sstring msg, bool ready) {
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if (ready) {
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sd_notify(0, format("{}\n{}={}\n", systemd_ready_msg, systemd_status_msg_prefix, msg).c_str());
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} else {
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sd_notify(0, format("{}={}\n", systemd_status_msg_prefix, msg).c_str());
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}
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}
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};
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