add pprof handler

cmd/proxy/debug.go

@@ -0,0 +1,17 @@
+//go:build pprof
+
+package main
+
+import (
+	"flag"
+	"os"
+)
+
+func init() {
+	flag.BoolVar(&pprofEnabled, "pprof", true, "")
+
+	if v, ok := os.LookupEnv("SENTRY_DSN"); ok {
+		sentrydsn = v
+	}
+	flag.StringVar(&sentrydsn, "sentry", sentrydsn, "sentry dsn to report errors")
+}