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feat: add support for exit zero on sigterm #1870

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merged 3 commits into from
Jul 14, 2023
Merged

feat: add support for exit zero on sigterm #1870

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7042718
add initial implementation for exit-zero-on-sigterm
Jul 11, 2023
a7763ef
cosmetic change
Jul 11, 2023
ad1baa2
Merge branch 'main' into exit-zero-on-sigterm
htigran Jul 14, 2023
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5 changes: 5 additions & 0 deletions cmd/errors.go
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,11 @@ var (
Code: 143,
}

errSigTermZero = &exitError{
Err: errors.New("SIGTERM signal received"),
Code: 0,
}

errQuitQuitQuit = &exitError{
Err: errors.New("/quitquitquit received request"),
Code: 0, // This error guarantees a clean exit.
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8 changes: 7 additions & 1 deletion cmd/root.go
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Expand Up @@ -398,6 +398,8 @@ the Proxy will then pick-up automatically.`)
"Disable Cloud Monitoring integration (used with --telemetry-project)")
pflags.StringVar(&c.conf.TelemetryPrefix, "telemetry-prefix", "",
"Prefix for Cloud Monitoring metrics.")
pflags.BoolVar(&c.conf.ExitZeroOnSigterm, "exit-zero-on-sigterm", false,
"Exit with 0 exit code when Sigterm received (default is 143)")
pflags.BoolVar(&c.conf.Prometheus, "prometheus", false,
"Enable Prometheus HTTP endpoint /metrics on localhost")
pflags.StringVar(&c.conf.PrometheusNamespace, "prometheus-namespace", "",
Expand Down Expand Up @@ -772,7 +774,11 @@ func runSignalWrapper(cmd *Command) (err error) {
case syscall.SIGINT:
shutdownCh <- errSigInt
case syscall.SIGTERM:
shutdownCh <- errSigTerm
if cmd.conf.ExitZeroOnSigterm {
shutdownCh <- errSigTermZero
} else {
shutdownCh <- errSigTerm
}
}
}()

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2 changes: 2 additions & 0 deletions internal/proxy/proxy.go
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Expand Up @@ -210,6 +210,8 @@ type Config struct {
// TelemetryTracingSampleRate sets the rate at which traces are
// samples. A higher value means fewer traces.
TelemetryTracingSampleRate int
// ExitZeroOnSigterm exits with 0 exit code when Sigterm received
ExitZeroOnSigterm bool
// DisableTraces disables tracing when TelemetryProject is set.
DisableTraces bool
// DisableMetrics disables metrics when TelemetryProject is set.
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