forked from TrueCloudLab/frostfs-node
[#552] Add sdnotify package
To avoid using third-party dependencies. Signed-off-by: Ekaterina Lebedeva <ekaterina.lebedeva@yadro.com>
This commit is contained in:
parent
9b2dce5763
commit
eca7ac9f0d
4 changed files with 62 additions and 5 deletions
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@ -10,8 +10,8 @@ import (
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/control"
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controlSvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/control/server"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/tree"
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"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/sdnotify"
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cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
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sysdnotify "github.com/iguanesolutions/go-systemd/v5/notify"
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"go.uber.org/zap"
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"google.golang.org/grpc"
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)
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@ -109,14 +109,13 @@ func (c *cfg) HealthStatus() control.HealthStatus {
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return control.HealthStatus(c.healthStatus.Load())
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}
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func (c *cfg) notifySystemd(st control.HealthStatus) string {
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func (c *cfg) notifySystemd(st control.HealthStatus) {
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status := fmt.Sprintf("%v, %v", st.Number(), st)
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err := sysdnotify.Status(status)
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err := sdnotify.Status(status)
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if err == nil {
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c.log.Info(fmt.Sprintf("reported STATUS=\"%v\" to systemd", status))
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}
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if err != nil {
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c.log.Error(logs.FailedToReportStatusToSystemd, zap.String("error", err.Error()))
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}
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return fmt.Sprintf("%v, %v", st, control.HealthStatus_name[int32(st)])
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}
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1
go.mod
1
go.mod
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@ -16,7 +16,6 @@ require (
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github.com/flynn-archive/go-shlex v0.0.0-20150515145356-3f9db97f8568
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github.com/google/uuid v1.4.0
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github.com/hashicorp/golang-lru/v2 v2.0.7
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github.com/iguanesolutions/go-systemd/v5 v5.1.1
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github.com/klauspost/compress v1.17.4
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github.com/mitchellh/go-homedir v1.1.0
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github.com/mr-tron/base58 v1.2.0
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BIN
go.sum
BIN
go.sum
Binary file not shown.
59
pkg/util/sdnotify/sdnotify.go
Normal file
59
pkg/util/sdnotify/sdnotify.go
Normal file
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@ -0,0 +1,59 @@
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package sdnotify
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import (
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"fmt"
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"net"
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"os"
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"strings"
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)
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const (
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ReadyEnabled = "READY=1"
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StoppingEnabled = "STOPPING=1"
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ReloadingEnabled = "RELOADING=1"
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)
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var socket *net.UnixAddr
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// Initializes socket with provided name of
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// environment variable.
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func InitSocket() error {
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notifySocket := os.Getenv("NOTIFY_SOCKET")
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if notifySocket == "" {
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return fmt.Errorf("\"NOTIFY_SOCKET\" environment variable is not present")
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}
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socket = &net.UnixAddr{
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Name: notifySocket,
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Net: "unixgram",
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}
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return nil
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}
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// FlagAndStatus sends systemd a combination of a
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// well-known status and STATUS=%s{status}, separated by newline.
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func FlagAndStatus(status string) error {
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status += "\nSTATUS=" + strings.TrimSuffix(status, "=1")
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return Send(status)
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}
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// Status sends systemd notify STATUS=%s{status}.
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func Status(status string) error {
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return Send(fmt.Sprintf("STATUS=%s", status))
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}
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// Send state through the notify socket if any.
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// If the notify socket was not detected, it returns an error.
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func Send(state string) error {
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if socket == nil {
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return fmt.Errorf("socket is not initialized")
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}
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conn, err := net.DialUnix(socket.Net, nil, socket)
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if err != nil {
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return fmt.Errorf("can't open unix socket: %v", 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 fmt.Errorf("can't write into the unix socket: %v", err)
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}
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return nil
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}
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