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66 lines
2.3 KiB
Go
66 lines
2.3 KiB
Go
//go:build linux
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/*
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Copyright The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package metrics
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import (
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"context"
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"strings"
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"testing"
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v1 "k8s.io/api/core/v1"
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"k8s.io/component-base/metrics/testutil"
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"sigs.k8s.io/knftables"
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)
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func TestNFTCounterMetricCollector(t *testing.T) {
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udpCounter := LocalhostNodePortRejectedCounterName(v1.ProtocolUDP)
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sctpCounter := LocalhostNodePortRejectedCounterName(v1.ProtocolSCTP)
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fake := knftables.NewFake(knftables.IPv4Family, "kube-proxy")
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tx := fake.NewTransaction()
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tx.Add(&knftables.Table{})
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tx.Add(&knftables.Counter{Name: udpCounter})
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tx.Add(&knftables.Counter{Name: sctpCounter})
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if err := fake.Run(context.Background(), tx); err != nil {
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t.Fatalf("failed to set up fake nftables: %v", err)
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}
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fake.Table.Counters[udpCounter].Packets = new(uint64(7))
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fake.Table.Counters[sctpCounter].Packets = new(uint64(3))
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c := &nftCounterMetricCollector{
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clients: map[v1.IPFamily]knftables.Interface{v1.IPv4Protocol: fake},
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counters: map[string]string{
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udpCounter: string(v1.ProtocolUDP),
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sctpCounter: string(v1.ProtocolSCTP),
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},
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description: localhostNodePortRejectedPacketsDescription,
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}
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const metricName = "kubeproxy_nftables_localhost_nodeport_rejected_packets_total"
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want := `
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# HELP kubeproxy_nftables_localhost_nodeport_rejected_packets_total [ALPHA] Number of packets rejected on localhost NodePorts. UDP and SCTP are always rejected; TCP is rejected when the localhost NodePort proxy is not running
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# TYPE kubeproxy_nftables_localhost_nodeport_rejected_packets_total counter
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kubeproxy_nftables_localhost_nodeport_rejected_packets_total{ip_family="IPv4",protocol="SCTP"} 3
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kubeproxy_nftables_localhost_nodeport_rejected_packets_total{ip_family="IPv4",protocol="UDP"} 7
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`
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if err := testutil.CustomCollectAndCompare(c, strings.NewReader(want), metricName); err != nil {
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t.Error(err)
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}
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}
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