Add simple packet metrics

firewall/interception/packet_tracer.go

@@ -0,0 +1,67 @@
+package interception
+
+import (
+	"time"
+
+	"github.com/safing/portmaster/network/packet"
+)
+
+type tracedPacket struct {
+	start time.Time
+	packet.Packet
+}
+
+func tracePacket(p packet.Packet) packet.Packet {
+	return &tracedPacket{
+		start:  time.Now(),
+		Packet: p,
+	}
+}
+
+func (p *tracedPacket) markServed(v string) {
+	if packetMetricsDestination == "" {
+		return
+	}
+
+	metrics.record(p, v)
+}
+
+func (p *tracedPacket) Accept() error {
+	defer p.markServed("accept")
+	return p.Packet.Accept()
+}
+
+func (p *tracedPacket) Block() error {
+	defer p.markServed("block")
+	return p.Packet.Block()
+}
+
+func (p *tracedPacket) Drop() error {
+	defer p.markServed("drop")
+	return p.Packet.Drop()
+}
+
+func (p *tracedPacket) PermanentAccept() error {
+	defer p.markServed("perm-accept")
+	return p.Packet.PermanentAccept()
+}
+
+func (p *tracedPacket) PermanentBlock() error {
+	defer p.markServed("perm-block")
+	return p.Packet.PermanentBlock()
+}
+
+func (p *tracedPacket) PermanentDrop() error {
+	defer p.markServed("perm-drop")
+	return p.Packet.PermanentDrop()
+}
+
+func (p *tracedPacket) RerouteToNameserver() error {
+	defer p.markServed("reroute-ns")
+	return p.Packet.RerouteToNameserver()
+}
+
+func (p *tracedPacket) RerouteToTunnel() error {
+	defer p.markServed("reroute-tunnel")
+	return p.Packet.RerouteToTunnel()
+}