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Collect k8s endpoints, ingress, and services in kube_inventory plugin (…
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| package kube_inventory | ||
|
|
||
| import ( | ||
| "context" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/ericchiang/k8s/apis/core/v1" | ||
|
|
||
| "github.com/influxdata/telegraf" | ||
| ) | ||
|
|
||
| func collectEndpoints(ctx context.Context, acc telegraf.Accumulator, ki *KubernetesInventory) { | ||
| list, err := ki.client.getEndpoints(ctx) | ||
| if err != nil { | ||
| acc.AddError(err) | ||
| return | ||
| } | ||
| for _, i := range list.Items { | ||
| if err = ki.gatherEndpoint(*i, acc); err != nil { | ||
| acc.AddError(err) | ||
| return | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (ki *KubernetesInventory) gatherEndpoint(e v1.Endpoints, acc telegraf.Accumulator) error { | ||
| if e.Metadata.CreationTimestamp.GetSeconds() == 0 && e.Metadata.CreationTimestamp.GetNanos() == 0 { | ||
| return nil | ||
| } | ||
|
|
||
| fields := map[string]interface{}{ | ||
| "created": time.Unix(e.Metadata.CreationTimestamp.GetSeconds(), int64(e.Metadata.CreationTimestamp.GetNanos())).UnixNano(), | ||
| "generation": e.Metadata.GetGeneration(), | ||
| } | ||
|
|
||
| tags := map[string]string{ | ||
| "endpoint_name": e.Metadata.GetName(), | ||
| "namespace": e.Metadata.GetNamespace(), | ||
| } | ||
|
|
||
| for _, endpoint := range e.GetSubsets() { | ||
| for _, readyAddr := range endpoint.GetAddresses() { | ||
| fields["ready"] = true | ||
|
|
||
| tags["hostname"] = readyAddr.GetHostname() | ||
| tags["node_name"] = readyAddr.GetNodeName() | ||
| if readyAddr.TargetRef != nil { | ||
| tags[strings.ToLower(readyAddr.GetTargetRef().GetKind())] = readyAddr.GetTargetRef().GetName() | ||
| } | ||
|
|
||
| for _, port := range endpoint.GetPorts() { | ||
| fields["port"] = port.GetPort() | ||
|
|
||
| tags["port_name"] = port.GetName() | ||
| tags["port_protocol"] = port.GetProtocol() | ||
|
|
||
| acc.AddFields(endpointMeasurement, fields, tags) | ||
| } | ||
| } | ||
| for _, notReadyAddr := range endpoint.GetNotReadyAddresses() { | ||
| fields["ready"] = false | ||
|
|
||
| tags["hostname"] = notReadyAddr.GetHostname() | ||
| tags["node_name"] = notReadyAddr.GetNodeName() | ||
| if notReadyAddr.TargetRef != nil { | ||
| tags[strings.ToLower(notReadyAddr.GetTargetRef().GetKind())] = notReadyAddr.GetTargetRef().GetName() | ||
| } | ||
|
|
||
| for _, port := range endpoint.GetPorts() { | ||
| fields["port"] = port.GetPort() | ||
|
|
||
| tags["port_name"] = port.GetName() | ||
| tags["port_protocol"] = port.GetProtocol() | ||
|
|
||
| acc.AddFields(endpointMeasurement, fields, tags) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,194 @@ | ||
| package kube_inventory | ||
|
|
||
| import ( | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/ericchiang/k8s/apis/core/v1" | ||
| metav1 "github.com/ericchiang/k8s/apis/meta/v1" | ||
| "github.com/influxdata/telegraf/testutil" | ||
| ) | ||
|
|
||
| func TestEndpoint(t *testing.T) { | ||
| cli := &client{} | ||
|
|
||
| now := time.Now() | ||
| now = time.Date(now.Year(), now.Month(), now.Day(), now.Hour(), 1, 36, 0, now.Location()) | ||
|
|
||
| tests := []struct { | ||
| name string | ||
| handler *mockHandler | ||
| output *testutil.Accumulator | ||
| hasError bool | ||
| }{ | ||
| { | ||
| name: "no endpoints", | ||
| handler: &mockHandler{ | ||
| responseMap: map[string]interface{}{ | ||
| "/endpoints/": &v1.EndpointsList{}, | ||
| }, | ||
| }, | ||
| hasError: false, | ||
| }, | ||
| { | ||
| name: "collect ready endpoints", | ||
| handler: &mockHandler{ | ||
| responseMap: map[string]interface{}{ | ||
| "/endpoints/": &v1.EndpointsList{ | ||
| Items: []*v1.Endpoints{ | ||
| { | ||
| Subsets: []*v1.EndpointSubset{ | ||
| { | ||
| Addresses: []*v1.EndpointAddress{ | ||
| { | ||
| Hostname: toStrPtr("storage-6"), | ||
| NodeName: toStrPtr("b.storage.internal"), | ||
| TargetRef: &v1.ObjectReference{ | ||
| Kind: toStrPtr("pod"), | ||
| Name: toStrPtr("storage-6"), | ||
| }, | ||
| }, | ||
| }, | ||
| Ports: []*v1.EndpointPort{ | ||
| { | ||
| Name: toStrPtr("server"), | ||
| Protocol: toStrPtr("TCP"), | ||
| Port: toInt32Ptr(8080), | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| Metadata: &metav1.ObjectMeta{ | ||
| Generation: toInt64Ptr(12), | ||
| Namespace: toStrPtr("ns1"), | ||
| Name: toStrPtr("storage"), | ||
| CreationTimestamp: &metav1.Time{Seconds: toInt64Ptr(now.Unix())}, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| output: &testutil.Accumulator{ | ||
| Metrics: []*testutil.Metric{ | ||
| { | ||
| Fields: map[string]interface{}{ | ||
| "ready": true, | ||
| "port": int32(8080), | ||
| "generation": int64(12), | ||
| "created": now.UnixNano(), | ||
| }, | ||
| Tags: map[string]string{ | ||
| "endpoint_name": "storage", | ||
| "namespace": "ns1", | ||
| "hostname": "storage-6", | ||
| "node_name": "b.storage.internal", | ||
| "port_name": "server", | ||
| "port_protocol": "TCP", | ||
| "pod": "storage-6", | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| hasError: false, | ||
| }, | ||
| { | ||
| name: "collect notready endpoints", | ||
| handler: &mockHandler{ | ||
| responseMap: map[string]interface{}{ | ||
| "/endpoints/": &v1.EndpointsList{ | ||
| Items: []*v1.Endpoints{ | ||
| { | ||
| Subsets: []*v1.EndpointSubset{ | ||
| { | ||
| NotReadyAddresses: []*v1.EndpointAddress{ | ||
| { | ||
| Hostname: toStrPtr("storage-6"), | ||
| NodeName: toStrPtr("b.storage.internal"), | ||
| TargetRef: &v1.ObjectReference{ | ||
| Kind: toStrPtr("pod"), | ||
| Name: toStrPtr("storage-6"), | ||
| }, | ||
| }, | ||
| }, | ||
| Ports: []*v1.EndpointPort{ | ||
| { | ||
| Name: toStrPtr("server"), | ||
| Protocol: toStrPtr("TCP"), | ||
| Port: toInt32Ptr(8080), | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| Metadata: &metav1.ObjectMeta{ | ||
| Generation: toInt64Ptr(12), | ||
| Namespace: toStrPtr("ns1"), | ||
| Name: toStrPtr("storage"), | ||
| CreationTimestamp: &metav1.Time{Seconds: toInt64Ptr(now.Unix())}, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| output: &testutil.Accumulator{ | ||
| Metrics: []*testutil.Metric{ | ||
| { | ||
| Fields: map[string]interface{}{ | ||
| "ready": false, | ||
| "port": int32(8080), | ||
| "generation": int64(12), | ||
| "created": now.UnixNano(), | ||
| }, | ||
| Tags: map[string]string{ | ||
| "endpoint_name": "storage", | ||
| "namespace": "ns1", | ||
| "hostname": "storage-6", | ||
| "node_name": "b.storage.internal", | ||
| "port_name": "server", | ||
| "port_protocol": "TCP", | ||
| "pod": "storage-6", | ||
| }, | ||
| }, | ||
| }, | ||
| }, | ||
| hasError: false, | ||
| }, | ||
| } | ||
|
|
||
| for _, v := range tests { | ||
| ks := &KubernetesInventory{ | ||
| client: cli, | ||
| } | ||
| acc := new(testutil.Accumulator) | ||
| for _, endpoint := range ((v.handler.responseMap["/endpoints/"]).(*v1.EndpointsList)).Items { | ||
| err := ks.gatherEndpoint(*endpoint, acc) | ||
| if err != nil { | ||
| t.Errorf("Failed to gather endpoint - %s", err.Error()) | ||
| } | ||
| } | ||
|
|
||
| err := acc.FirstError() | ||
| if err == nil && v.hasError { | ||
| t.Fatalf("%s failed, should have error", v.name) | ||
| } else if err != nil && !v.hasError { | ||
| t.Fatalf("%s failed, err: %v", v.name, err) | ||
| } | ||
| if v.output == nil && len(acc.Metrics) > 0 { | ||
| t.Fatalf("%s: collected extra data", v.name) | ||
| } else if v.output != nil && len(v.output.Metrics) > 0 { | ||
| for i := range v.output.Metrics { | ||
| for k, m := range v.output.Metrics[i].Tags { | ||
| if acc.Metrics[i].Tags[k] != m { | ||
| t.Fatalf("%s: tag %s metrics unmatch Expected %s, got '%v'\n", v.name, k, m, acc.Metrics[i].Tags[k]) | ||
| } | ||
| } | ||
| for k, m := range v.output.Metrics[i].Fields { | ||
| if acc.Metrics[i].Fields[k] != m { | ||
| t.Fatalf("%s: field %s metrics unmatch Expected %v(%T), got %v(%T)\n", v.name, k, m, m, acc.Metrics[i].Fields[k], acc.Metrics[i].Fields[k]) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |
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