mirror of
https://github.com/akvorado/akvorado.git
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126 lines
3.1 KiB
Go
126 lines
3.1 KiB
Go
// SPDX-FileCopyrightText: 2022 Free Mobile
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// SPDX-License-Identifier: AGPL-3.0-only
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package flow
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import (
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"fmt"
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"os"
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"path"
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"runtime"
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"testing"
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"time"
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"akvorado/common/helpers"
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"akvorado/common/reporter"
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"akvorado/inlet/flow/input/file"
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)
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func TestFlow(t *testing.T) {
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var nominalRate int
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_, src, _, _ := runtime.Caller(0)
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base := path.Join(path.Dir(src), "decoder", "netflow", "testdata")
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outDir := t.TempDir()
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outFiles := []string{}
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for idx, f := range []string{
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"options-template.pcap",
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"options-data.pcap",
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"template.pcap",
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"data.pcap", "data.pcap", "data.pcap", "data.pcap",
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"data.pcap", "data.pcap", "data.pcap", "data.pcap",
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"data.pcap", "data.pcap", "data.pcap", "data.pcap",
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"data.pcap", "data.pcap", "data.pcap", "data.pcap",
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} {
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outFile := path.Join(outDir, fmt.Sprintf("data-%d", idx))
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err := os.WriteFile(outFile, helpers.ReadPcapL4(t, path.Join(base, f)), 0o666)
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if err != nil {
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t.Fatalf("WriteFile(%q) error:\n%+v", outFile, err)
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}
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outFiles = append(outFiles, outFile)
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}
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inputs := []InputConfiguration{
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{
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Decoder: "netflow",
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Config: &file.Configuration{
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Paths: outFiles,
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},
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},
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}
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for retry := 2; retry >= 0; retry-- {
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// Without rate limiting
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{
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r := reporter.NewMock(t)
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config := DefaultConfiguration()
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config.Inputs = inputs
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c := NewMock(t, r, config)
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// Receive flows
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now := time.Now()
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for i := 0; i < 1000; i++ {
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select {
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case <-c.Flows():
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case <-time.After(100 * time.Millisecond):
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t.Fatalf("no flow received")
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}
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}
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elapsed := time.Now().Sub(now)
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t.Logf("Elapsed time for 1000 messages is %s", elapsed)
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nominalRate = int(1000 * (time.Second / elapsed))
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}
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// With rate limiting
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if runtime.GOOS == "Linux" {
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r := reporter.NewMock(t)
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config := DefaultConfiguration()
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config.RateLimit = 1000
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config.Inputs = inputs
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c := NewMock(t, r, config)
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// Receive flows
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twoSeconds := time.After(2 * time.Second)
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count := 0
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outer1:
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for {
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select {
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case <-c.Flows():
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count++
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case <-twoSeconds:
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break outer1
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}
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}
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t.Logf("During the first two seconds, got %d flows", count)
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if count > 2200 || count < 2000 {
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t.Fatalf("Got %d flows instead of 2100 (burst included)", count)
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}
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if nominalRate == 0 {
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return
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}
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select {
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case flow := <-c.Flows():
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// This is hard to estimate the number of
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// flows we should have got. We use the
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// nominal rate but it was done with rate
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// limiting disabled (so less code).
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// Therefore, we are super conservative on the
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// upper limit of the sampling rate. However,
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// the lower limit should be OK.
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t.Logf("Nominal rate was %d/second", nominalRate)
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expectedRate := uint64(30000 / 1000 * nominalRate)
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if flow.SamplingRate > uint32(1000*expectedRate/100) || flow.SamplingRate < uint32(70*expectedRate/100) {
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if retry > 0 {
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continue
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}
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t.Fatalf("Sampling rate is %d, expected %d", flow.SamplingRate, expectedRate)
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}
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case <-time.After(100 * time.Millisecond):
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t.Fatalf("no flow received")
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}
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break
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}
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}
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}
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