Initial version

logger.go

@@ -0,0 +1,17 @@
+package botfilter
+
+import "log"
+
+type filterLogger struct {
+	name    string
+	enabled bool
+}
+
+func (l filterLogger) blocked(ip, reason string, score int) {
+	if !l.enabled {
+		return
+	}
+	// This is intentionally opt-in. Logging every rejected request during a
+	// flood can become a second source of CPU and disk pressure.
+	log.Printf("botfilter[%s]: blocked client=%s reason=%q score=%d", l.name, ip, reason, score)
+}