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feat: add optional pprof debug endpoints on probe server

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Enabled via --pprof-enabled flag. Exposes /debug/pprof/ routes on the
probe bind address for runtime profiling.
This commit is contained in:
Trong Huu Nguyen
2026-05-07 16:00:23 +02:00
parent 1939d18ba8
commit b1e3732ec3
3 changed files with 15 additions and 0 deletions
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11
cmd/wonderwall/main.go
View File

@@ -4,6 +4,7 @@ import (
"context"
"fmt"
"net/http"
"net/http/pprof"
"github.com/KimMachineGun/automemlimit/memlimit"
"github.com/nais/wonderwall/internal/crypto"
@@ -102,6 +103,16 @@ func run() error {
})
mux.HandleFunc("/", healthz)
mux.HandleFunc("/healthz", healthz)
if cfg.PprofEnabled {
mux.HandleFunc("/debug/pprof/", pprof.Index)
mux.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
mux.HandleFunc("/debug/pprof/trace", pprof.Trace)
log.Infof("pprof: enabled on %s/debug/pprof/", cfg.ProbeBindAddress)
}
log.Debugf("probe: listening on %s", cfg.ProbeBindAddress)
err := http.ListenAndServe(cfg.ProbeBindAddress, mux)
if err != nil {

1
docs/configuration.md
View File

@@ -29,6 +29,7 @@ The following flags are available:
| `log-format` | string | `json` | Log format, either `json` or `text`. |
| `log-level` | string | `info` | Logging verbosity level. |
| `metrics-bind-address` | string | `127.0.0.1:3001` | Listen address for metrics only. Empty disables metrics |
| `pprof-enabled` | boolean | `false` | Enable pprof debug endpoints on the probe server (`/debug/pprof/`). |
| `probe-bind-address` | string | | Listen address for health probe. Empty disables health probe. |
| `openid.acr-values` | string | | Space separated string that configures the default security level (`acr_values`) parameter for authorization requests. |
| `openid.audiences` | strings | | List of additional trusted audiences (other than the client_id) for OpenID Connect id_token validation. |

3
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"`
PprofEnabled bool `json:"pprof-enabled"`
ProbeBindAddress string `json:"probe-bind-address"`
ShutdownGracefulPeriod time.Duration `json:"shutdown-graceful-period"`
ShutdownWaitBeforePeriod time.Duration `json:"shutdown-wait-before-period"`
@@ -50,6 +51,7 @@ const (
LogFormat = "log-format"
LogLevel = "log-level"
MetricsBindAddress = "metrics-bind-address"
PprofEnabled = "pprof-enabled"
ProbeBindAddress = "probe-bind-address"
ShutdownGracefulPeriod = "shutdown-graceful-period"
ShutdownWaitBeforePeriod = "shutdown-wait-before-period"
@@ -73,6 +75,7 @@ func Initialize() (*Config, error) {
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. Empty disables metrics.")
flag.Bool(PprofEnabled, false, "Enable pprof debug endpoints on the probe server.")
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.")