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feat: add separate health probe listener

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This adds an optional health probe listener, mostly for use in rutime
environments where you want separate public and private listeners.

The existing /oauth2/ping endpoint on the main listener is kept for
backwards compatibility.
This commit is contained in:
Trong Huu Nguyen
2025-07-07 15:35:34 +02:00
parent fddff23a8b
commit 2e3da2bb64
3 changed files with 33 additions and 8 deletions
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5
pkg/config/config.go
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@@ -21,6 +21,7 @@ type Config struct {
LogFormat string `json:"log-format"`
LogLevel string `json:"log-level"`
MetricsBindAddress string `json:"metrics-bind-address"`
ProbeBindAddress string `json:"probe-bind-address"`
ShutdownGracefulPeriod time.Duration `json:"shutdown-graceful-period"`
ShutdownWaitBeforePeriod time.Duration `json:"shutdown-wait-before-period"`
Version string `json:"version"`
@@ -50,6 +51,7 @@ const (
LogFormat = "log-format"
LogLevel = "log-level"
MetricsBindAddress = "metrics-bind-address"
ProbeBindAddress = "probe-bind-address"
ShutdownGracefulPeriod = "shutdown-graceful-period"
ShutdownWaitBeforePeriod = "shutdown-wait-before-period"
@@ -71,7 +73,8 @@ func Initialize() (*Config, error) {
flag.String(BindAddress, "127.0.0.1:3000", "Listen address for public connections.")
flag.String(LogFormat, "json", "Log format, either 'json' or 'text'.")
flag.String(LogLevel, "info", "Logging verbosity level.")
flag.String(MetricsBindAddress, "127.0.0.1:3001", "Listen address for metrics only.")
flag.String(MetricsBindAddress, "127.0.0.1:3001", "Listen address for metrics only. Empty disables metrics.")
flag.String(ProbeBindAddress, "", "Listen address for health probe. Empty disables health probe.")
flag.Duration(ShutdownGracefulPeriod, 30*time.Second, "Graceful shutdown period when receiving a shutdown signal after which the server is forcibly exited.")
flag.Duration(ShutdownWaitBeforePeriod, 0*time.Second, "Wait period when receiving a shutdown signal before actually starting a graceful shutdown. Useful for allowing propagation of Endpoint updates in Kubernetes.")