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This change implements the systemd readiness notification, using the sd_notify protocol. See https://www.freedesktop.org/software/systemd/man/sd_notify.html.
43 lines
957 B
Go
43 lines
957 B
Go
// Copyright 2021 Frédéric Guillot. All rights reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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package cli // import "miniflux.app/cli"
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import (
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"net"
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"os"
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)
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const (
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// sdNotifyReady tells the service manager that service startup is
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// finished, or the service finished loading its configuration.
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sdNotifyReady = "READY=1"
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)
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// sdNotify sends a message to systemd using the sd_notify protocol.
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// See https://www.freedesktop.org/software/systemd/man/sd_notify.html.
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func sdNotify(state string) error {
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addr := &net.UnixAddr{
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Net: "unixgram",
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Name: os.Getenv("NOTIFY_SOCKET"),
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}
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if addr.Name == "" {
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// We're not running under systemd (NOTIFY_SOCKET has not set).
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return nil
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}
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conn, err := net.DialUnix(addr.Net, nil, addr)
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if err != nil {
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return err
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}
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defer conn.Close()
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if _, err = conn.Write([]byte(state)); err != nil {
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return err
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}
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return nil
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}
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