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Always include Pod labels in FlowAggregator IPFIX template #6418

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merged 2 commits into from
Jun 10, 2024
Merged

Always include Pod labels in FlowAggregator IPFIX template #6418

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cfe771c
Always include Pod labels in FlowAggregator IPFIX template
antoninbas Jun 5, 2024
ea22cac
Fix some grammar
antoninbas Jun 7, 2024
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4 changes: 2 additions & 2 deletions pkg/agent/flowexporter/exporter/exporter_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,7 @@ func sendTemplateSet(t *testing.T, ctrl *gomock.Controller, mockIPFIXExpProc *ip
}
mockIPFIXExpProc.EXPECT().SendSet(mockTempSet).Return(0, nil)
_, err := flowExp.sendTemplateSet(isIPv6)
assert.NoError(t, err, "Error in sending template set")
assert.NoError(t, err, "Error when sending template set")

eL := flowExp.elementsListv4
if isIPv6 {
Expand Down Expand Up @@ -254,7 +254,7 @@ func testSendDataSet(t *testing.T, v4Enabled bool, v6Enabled bool) {
err := flowExp.addConnToSet(&conn)
assert.NoError(t, err, "Error when adding record to data set")
_, err = flowExp.sendDataSet()
assert.NoError(t, err, "Error in sending data set")
assert.NoError(t, err, "Error when sending data set")
}

if v4Enabled {
Expand Down
22 changes: 7 additions & 15 deletions pkg/flowaggregator/exporter/ipfix.go
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Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,6 @@ type IPFIXExporter struct {
externalFlowCollectorProto string
exportingProcess ipfix.IPFIXExportingProcess
sendJSONRecord bool
includePodLabels bool
observationDomainID uint32
templateIDv4 uint16
templateIDv6 uint16
Expand Down Expand Up @@ -95,7 +94,6 @@ func NewIPFIXExporter(
externalFlowCollectorAddr: opt.ExternalFlowCollectorAddr,
externalFlowCollectorProto: opt.ExternalFlowCollectorProto,
sendJSONRecord: sendJSONRecord,
includePodLabels: opt.Config.RecordContents.PodLabels,
observationDomainID: observationDomainID,
registry: registry,
set: ipfixentities.NewSet(false),
Expand Down Expand Up @@ -127,7 +125,7 @@ func (e *IPFIXExporter) AddRecord(record ipfixentities.Record, isRecordIPv6 bool

func (e *IPFIXExporter) UpdateOptions(opt *options.Options) {
config := opt.Config.FlowCollector
if reflect.DeepEqual(config, e.config) && opt.Config.RecordContents.PodLabels == e.includePodLabels {
if reflect.DeepEqual(config, e.config) {
return
}

Expand All @@ -144,12 +142,8 @@ func (e *IPFIXExporter) UpdateOptions(opt *options.Options) {
} else {
e.observationDomainID = genObservationDomainID(e.k8sClient)
}
e.includePodLabels = opt.Config.RecordContents.PodLabels
klog.InfoS("New IPFIXExporter configuration", "collectorAddress", e.externalFlowCollectorAddr, "collectorProtocol", e.externalFlowCollectorProto, "sendJSON", e.sendJSONRecord, "domainID", e.observationDomainID, "includePodLabels", e.includePodLabels)
klog.InfoS("New IPFIXExporter configuration", "collectorAddress", e.externalFlowCollectorAddr, "collectorProtocol", e.externalFlowCollectorProto, "sendJSON", e.sendJSONRecord, "domainID", e.observationDomainID)

// In theory, a change to e.includePodLabels does not require opening a new connection, it
// just requires sending new templates. But it is easier to treat all configuration changes
// uniformly.
if e.exportingProcess != nil {
e.exportingProcess.CloseConnToCollector()
e.exportingProcess = nil
Expand Down Expand Up @@ -327,14 +321,12 @@ func (e *IPFIXExporter) sendTemplateSet(isIPv6 bool) (int, error) {
}
elements = append(elements, ie)
}
if e.includePodLabels {
for _, ie := range infoelements.AntreaLabelsElementList {
ie, err := e.createInfoElementForTemplateSet(ie, ipfixregistry.AntreaEnterpriseID)
if err != nil {
return 0, err
}
elements = append(elements, ie)
for _, ie := range infoelements.AntreaLabelsElementList {
ie, err := e.createInfoElementForTemplateSet(ie, ipfixregistry.AntreaEnterpriseID)
if err != nil {
return 0, err
}
elements = append(elements, ie)
}
e.set.ResetSet()
if err := e.set.PrepareSet(ipfixentities.Template, templateID); err != nil {
Expand Down
52 changes: 19 additions & 33 deletions pkg/flowaggregator/exporter/ipfix_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -51,59 +51,41 @@ func createElement(name string, enterpriseID uint32) ipfixentities.InfoElementWi
}

func TestIPFIXExporter_sendTemplateSet(t *testing.T) {
ctrl := gomock.NewController(t)
runTest := func(t *testing.T, isIPv6 bool) {
ctrl := gomock.NewController(t)

mockIPFIXExpProc := ipfixtesting.NewMockIPFIXExportingProcess(ctrl)
mockIPFIXRegistry := ipfixtesting.NewMockIPFIXRegistry(ctrl)
mockTempSet := ipfixentitiestesting.NewMockSet(ctrl)
mockIPFIXExpProc := ipfixtesting.NewMockIPFIXExportingProcess(ctrl)
mockIPFIXRegistry := ipfixtesting.NewMockIPFIXRegistry(ctrl)
mockTempSet := ipfixentitiestesting.NewMockSet(ctrl)

newIPFIXExporter := func(includePodLabels bool) *IPFIXExporter {
return &IPFIXExporter{
exporter := &IPFIXExporter{
externalFlowCollectorAddr: "",
externalFlowCollectorProto: "",
exportingProcess: mockIPFIXExpProc,
templateIDv4: testTemplateIDv4,
templateIDv6: testTemplateIDv6,
registry: mockIPFIXRegistry,
set: mockTempSet,
includePodLabels: includePodLabels,
observationDomainID: testObservationDomainID,
}
}

testcases := []struct {
isIPv6 bool
includePodLabels bool
}{
{false, true},
{true, true},
{false, false},
{true, false},
}

for _, tc := range testcases {
exporter := newIPFIXExporter(tc.includePodLabels)
elemList := createElementList(tc.isIPv6, mockIPFIXRegistry)
elemList := createElementList(isIPv6, mockIPFIXRegistry)
testTemplateID := exporter.templateIDv4
if tc.isIPv6 {
if isIPv6 {
testTemplateID = exporter.templateIDv6
}
if tc.includePodLabels {
for _, ie := range infoelements.AntreaLabelsElementList {
elemList = append(elemList, createElement(ie, ipfixregistry.AntreaEnterpriseID))
mockIPFIXRegistry.EXPECT().GetInfoElement(ie, ipfixregistry.AntreaEnterpriseID).Return(elemList[len(elemList)-1].GetInfoElement(), nil)
}
}
mockTempSet.EXPECT().ResetSet()
mockTempSet.EXPECT().PrepareSet(ipfixentities.Template, testTemplateID).Return(nil)
mockTempSet.EXPECT().AddRecord(elemList, testTemplateID).Return(nil)
// Passing 0 for sentBytes as it is not used anywhere in the test. If this not a call to mock, the actual sentBytes
// above elements: ianaInfoElements, ianaReverseInfoElements and antreaInfoElements.
mockIPFIXExpProc.EXPECT().SendSet(mockTempSet).Return(0, nil)

_, err := exporter.sendTemplateSet(tc.isIPv6)
assert.NoErrorf(t, err, "Error in sending template record: %v, isIPv6: %v", err, tc.isIPv6)
_, err := exporter.sendTemplateSet(isIPv6)
assert.NoErrorf(t, err, "Error when sending template record")
}

t.Run("IPv4", func(t *testing.T) { runTest(t, false) })
t.Run("IPv6", func(t *testing.T) { runTest(t, true) })
}

func TestIPFIXExporter_UpdateOptions(t *testing.T) {
Expand Down Expand Up @@ -163,7 +145,7 @@ func TestIPFIXExporter_UpdateOptions(t *testing.T) {
const newAddr = "newAddr"
const newProto = "newProto"
config.FlowCollector.Address = fmt.Sprintf("%s:%s", newAddr, newProto)
config.RecordContents.PodLabels = true
config.FlowCollector.RecordFormat = "JSON"

ipfixExporter.UpdateOptions(&options.Options{
Config: config,
Expand All @@ -173,7 +155,7 @@ func TestIPFIXExporter_UpdateOptions(t *testing.T) {

assert.Equal(t, newAddr, ipfixExporter.externalFlowCollectorAddr)
assert.Equal(t, newProto, ipfixExporter.externalFlowCollectorProto)
assert.True(t, ipfixExporter.includePodLabels)
assert.True(t, ipfixExporter.sendJSONRecord)

require.NoError(t, ipfixExporter.AddRecord(mockRecord, false))
assert.Equal(t, 2, setCount, "Invalid number of flow sets sent by exporter")
Expand Down Expand Up @@ -305,6 +287,10 @@ func createElementList(isIPv6 bool, mockIPFIXRegistry *ipfixtesting.MockIPFIXReg
elemList = append(elemList, createElement(infoelements.AntreaDestinationThroughputElementList[i], ipfixregistry.AntreaEnterpriseID))
mockIPFIXRegistry.EXPECT().GetInfoElement(infoelements.AntreaDestinationThroughputElementList[i], ipfixregistry.AntreaEnterpriseID).Return(elemList[len(elemList)-1].GetInfoElement(), nil)
}
for _, ie := range infoelements.AntreaLabelsElementList {
elemList = append(elemList, createElement(ie, ipfixregistry.AntreaEnterpriseID))
mockIPFIXRegistry.EXPECT().GetInfoElement(ie, ipfixregistry.AntreaEnterpriseID).Return(elemList[len(elemList)-1].GetInfoElement(), nil)
}
return elemList
}

Expand Down
36 changes: 22 additions & 14 deletions pkg/flowaggregator/flowaggregator.go
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Original file line number Diff line number Diff line change
Expand Up @@ -417,7 +417,8 @@ func (fa *flowAggregator) sendFlowKeyRecord(key ipfixintermediate.FlowKey, recor
fa.fillK8sMetadata(key, record.Record, *startTime)
fa.aggregationProcess.SetCorrelatedFieldsFilled(record, true)
}
if fa.includePodLabels && !fa.aggregationProcess.AreExternalFieldsFilled(*record) {
// Even if fa.includePodLabels is false, we still need to add an empty IE to match the template.
if !fa.aggregationProcess.AreExternalFieldsFilled(*record) {
fa.fillPodLabels(key, record.Record, *startTime)
fa.aggregationProcess.SetExternalFieldsFilled(record, true)
}
Expand Down Expand Up @@ -502,7 +503,11 @@ func (fa *flowAggregator) fetchPodLabels(ip string, startTime time.Time) string
klog.ErrorS(nil, "Error when getting Pod information from podInformer", "ip", ip, "startTime", startTime)
return ""
}
labelsJSON, err := json.Marshal(pod.GetLabels())
labels := pod.GetLabels()
if labels == nil {
labels = map[string]string{}
}
labelsJSON, err := json.Marshal(labels)
if err != nil {
klog.ErrorS(err, "Error when JSON encoding of Pod labels")
return ""
Expand All @@ -512,22 +517,25 @@ func (fa *flowAggregator) fetchPodLabels(ip string, startTime time.Time) string

func (fa *flowAggregator) fillPodLabelsForSide(ip string, record ipfixentities.Record, startTime time.Time, podNamespaceIEName, podNameIEName, podLabelsIEName string) error {
podLabelsString := ""
if podName, _, ok := record.GetInfoElementWithValue(podNameIEName); ok {
podNameString := podName.GetStringValue()
if podNamespace, _, ok := record.GetInfoElementWithValue(podNamespaceIEName); ok {
podNamespaceString := podNamespace.GetStringValue()
if podNameString != "" && podNamespaceString != "" {
podLabelsString = fa.fetchPodLabels(ip, startTime)
// If fa.includePodLabels is false, we always use an empty string.
// If fa.includePodLabels is true, we use an empty string in case of error or if the
// endpoint is not a Pod, and a valid JSON dictionary otherwise (which will be empty if the
// Pod has no labels).
if fa.includePodLabels {
if podName, _, ok := record.GetInfoElementWithValue(podNameIEName); ok {
podNameString := podName.GetStringValue()
if podNamespace, _, ok := record.GetInfoElementWithValue(podNamespaceIEName); ok {
podNamespaceString := podNamespace.GetStringValue()
if podNameString != "" && podNamespaceString != "" {
podLabelsString = fa.fetchPodLabels(ip, startTime)
}
}
}
}

podLabelsElement, err := fa.registry.GetInfoElement(podLabelsIEName, ipfixregistry.AntreaEnterpriseID)
if err == nil {
podLabelsIE, err := ipfixentities.DecodeAndCreateInfoElementWithValue(podLabelsElement, bytes.NewBufferString(podLabelsString).Bytes())
if err != nil {
return fmt.Errorf("error when creating podLabels InfoElementWithValue: %v", err)
}
podLabelsIE := ipfixentities.NewStringInfoElement(podLabelsElement, podLabelsString)
if err := record.AddInfoElement(podLabelsIE); err != nil {
return fmt.Errorf("error when adding podLabels InfoElementWithValue: %v", err)
}
Expand All @@ -540,10 +548,10 @@ func (fa *flowAggregator) fillPodLabelsForSide(ip string, record ipfixentities.R

func (fa *flowAggregator) fillPodLabels(key ipfixintermediate.FlowKey, record ipfixentities.Record, startTime time.Time) {
if err := fa.fillPodLabelsForSide(key.SourceAddress, record, startTime, "sourcePodNamespace", "sourcePodName", "sourcePodLabels"); err != nil {
klog.ErrorS(err, "Error when filling pod labels", "side", "source")
klog.ErrorS(err, "Error when filling Pod labels", "side", "source")
}
if err := fa.fillPodLabelsForSide(key.DestinationAddress, record, startTime, "destinationPodNamespace", "destinationPodName", "destinationPodLabels"); err != nil {
klog.ErrorS(err, "Error when filling pod labels", "side", "destination")
klog.ErrorS(err, "Error when filling Pod labels", "side", "destination")
}
}

Expand Down
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