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use source address for ping to check if the connection is alive
Signed-off-by: Artem Glazychev <artem.glazychev@xored.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,160 @@ | ||
| // Copyright (c) 2023 Cisco and/or its affiliates. | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at: | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package heal_test | ||
|
|
||
| import ( | ||
| "context" | ||
| "sync/atomic" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "go.uber.org/goleak" | ||
|
|
||
| "github.com/networkservicemesh/api/pkg/api/networkservice" | ||
| "github.com/networkservicemesh/api/pkg/api/networkservice/mechanisms/kernel" | ||
| "github.com/stretchr/testify/require" | ||
|
|
||
| "github.com/networkservicemesh/sdk-kernel/pkg/kernel/tools/heal" | ||
| ) | ||
|
|
||
| const unPingableIPv4 = "172.168.1.1" | ||
| const unPingableIPv6 = "2005::1" | ||
|
|
||
| func createConnection(srcIPs, dstIPs []string) *networkservice.Connection { | ||
| return &networkservice.Connection{ | ||
| Mechanism: &networkservice.Mechanism{ | ||
| Type: kernel.MECHANISM, | ||
| }, | ||
| Context: &networkservice.ConnectionContext{IpContext: &networkservice.IPContext{ | ||
| SrcIpAddrs: srcIPs, | ||
| DstIpAddrs: dstIPs, | ||
| }}, | ||
| } | ||
| } | ||
| func Test_LivenessChecker(t *testing.T) { | ||
| t.Cleanup(func() { goleak.VerifyNone(t) }) | ||
|
|
||
| samples := []struct { | ||
| Name string | ||
| Connection *networkservice.Connection | ||
| PingersCount int32 | ||
| ExpectedResult bool | ||
| }{ | ||
| { | ||
| Name: "Pingable IPv4 one pair", | ||
| Connection: createConnection( | ||
| []string{"172.168.0.1/32"}, | ||
| []string{"172.168.0.2/32"}, | ||
| ), | ||
| PingersCount: 1, | ||
| ExpectedResult: true, | ||
| }, | ||
| { | ||
| Name: "Pingable IPv4 two pairs", | ||
| Connection: createConnection( | ||
| []string{"172.168.0.1/32", "172.168.0.3/32"}, | ||
| []string{"172.168.0.2/32", "172.168.0.4/32"}, | ||
| ), | ||
| PingersCount: 4, | ||
| ExpectedResult: true, | ||
| }, | ||
| { | ||
| Name: "Unpingable IPv4 two pairs", | ||
| Connection: createConnection( | ||
| []string{"172.168.0.1/32", "172.168.0.3/32"}, | ||
| []string{"172.168.0.2/32", unPingableIPv4 + "/32"}, | ||
| ), | ||
| PingersCount: 4, | ||
| ExpectedResult: false, | ||
| }, | ||
| { | ||
| Name: "Pingable IPv4 and IPv6", | ||
| Connection: createConnection( | ||
| []string{"172.168.0.1/32", "2004::1/128"}, | ||
| []string{"172.168.0.2/32", "2004::2/128"}, | ||
| ), | ||
| PingersCount: 2, | ||
| ExpectedResult: true, | ||
| }, | ||
| { | ||
| Name: "Unpingable IPv4 and IPv6", | ||
| Connection: createConnection( | ||
| []string{"172.168.0.1/32", "2004::1/128"}, | ||
| []string{"172.168.0.2/32", unPingableIPv6 + "/128"}, | ||
| ), | ||
| PingersCount: 2, | ||
| ExpectedResult: false, | ||
| }, | ||
| { | ||
| Name: "SrcIPs is empty", | ||
| Connection: createConnection( | ||
| []string{}, | ||
| []string{"172.168.0.2/32"}, | ||
| ), | ||
| PingersCount: 0, | ||
| ExpectedResult: true, | ||
| }, | ||
| { | ||
| Name: "DstIPs is empty", | ||
| Connection: createConnection( | ||
| []string{"172.168.0.1/32"}, | ||
| []string{}, | ||
| ), | ||
| PingersCount: 0, | ||
| ExpectedResult: true, | ||
| }, | ||
| } | ||
| for _, s := range samples { | ||
| sample := s | ||
| t.Run(sample.Name, func(t *testing.T) { | ||
| ctx, cancel := context.WithTimeout(context.Background(), time.Second) | ||
| defer cancel() | ||
| pingerFactory := &testPingerFactory{} | ||
| ok := heal.KernelLivenessCheck(heal.WithPingerFactory(pingerFactory))(ctx, sample.Connection) | ||
| require.Equal(t, sample.ExpectedResult, ok) | ||
| require.Equal(t, pingerFactory.pingersCount, sample.PingersCount) | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| type testPingerFactory struct { | ||
| pingersCount int32 | ||
| } | ||
|
|
||
| func (p *testPingerFactory) CreatePinger(srcIP, dstIP string, timeout time.Duration, count int) heal.Pinger { | ||
| atomic.AddInt32(&p.pingersCount, 1) | ||
| return &testPinger{ | ||
| dstIP: dstIP, | ||
| count: count, | ||
| } | ||
| } | ||
|
|
||
| type testPinger struct { | ||
| dstIP string | ||
| count int | ||
| } | ||
|
|
||
| func (p *testPinger) Run() error { | ||
| return nil | ||
| } | ||
|
|
||
| func (p *testPinger) GetReceivedPackets() int { | ||
| if p.dstIP == unPingableIPv4 || p.dstIP == unPingableIPv6 { | ||
| return 0 | ||
| } | ||
| return p.count | ||
| } |