telegraf/plugins/inputs/kube_inventory/node_test.go

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package kube_inventory
import (
"testing"
"time"
"github.com/ericchiang/k8s/apis/core/v1"
metav1 "github.com/ericchiang/k8s/apis/meta/v1"
"github.com/ericchiang/k8s/apis/resource"
"github.com/influxdata/telegraf/testutil"
)
func TestNode(t *testing.T) {
cli := &client{}
now := time.Now()
created := time.Date(now.Year(), now.Month(), now.Day(), now.Hour()-2, 1, 36, 0, now.Location())
tests := []struct {
name string
handler *mockHandler
output *testutil.Accumulator
hasError bool
}{
{
name: "no nodes",
handler: &mockHandler{
responseMap: map[string]interface{}{
"/nodes/": &v1.NodeList{},
},
},
hasError: false,
},
{
name: "collect nodes",
handler: &mockHandler{
responseMap: map[string]interface{}{
"/nodes/": &v1.NodeList{
Items: []*v1.Node{
{
Status: &v1.NodeStatus{
NodeInfo: &v1.NodeSystemInfo{
KernelVersion: toStrPtr("4.14.48-coreos-r2"),
OsImage: toStrPtr("Container Linux by CoreOS 1745.7.0 (Rhyolite)"),
ContainerRuntimeVersion: toStrPtr("docker://18.3.1"),
KubeletVersion: toStrPtr("v1.10.3"),
KubeProxyVersion: toStrPtr("v1.10.3"),
},
Phase: toStrPtr("Running"),
Capacity: map[string]*resource.Quantity{
"cpu": {String_: toStrPtr("16")},
"ephemeral_storage_bytes": {String_: toStrPtr("49536401408")},
"hugepages_1Gi_bytes": {String_: toStrPtr("0")},
"hugepages_2Mi_bytes": {String_: toStrPtr("0")},
"memory": {String_: toStrPtr("125817904Ki")},
"pods": {String_: toStrPtr("110")},
},
Allocatable: map[string]*resource.Quantity{
"cpu": {String_: toStrPtr("16")},
"ephemeral_storage_bytes": {String_: toStrPtr("44582761194")},
"hugepages_1Gi_bytes": {String_: toStrPtr("0")},
"hugepages_2Mi_bytes": {String_: toStrPtr("0")},
"memory": {String_: toStrPtr("125715504Ki")},
"pods": {String_: toStrPtr("110")},
},
Conditions: []*v1.NodeCondition{
{Type: toStrPtr("Ready"), Status: toStrPtr("true"), LastTransitionTime: &metav1.Time{Seconds: toInt64Ptr(now.Unix())}},
{Type: toStrPtr("OutOfDisk"), Status: toStrPtr("false"), LastTransitionTime: &metav1.Time{Seconds: toInt64Ptr(created.Unix())}},
},
},
Spec: &v1.NodeSpec{
ProviderID: toStrPtr("aws:///us-east-1c/i-0c00"),
Taints: []*v1.Taint{
{
Key: toStrPtr("k1"),
Value: toStrPtr("v1"),
Effect: toStrPtr("NoExecute"),
},
{
Key: toStrPtr("k2"),
Value: toStrPtr("v2"),
Effect: toStrPtr("NoSchedule"),
},
},
},
Metadata: &metav1.ObjectMeta{
Generation: toInt64Ptr(int64(11232)),
Namespace: toStrPtr("ns1"),
Name: toStrPtr("node1"),
Labels: map[string]string{
"lab1": "v1",
"lab2": "v2",
},
CreationTimestamp: &metav1.Time{Seconds: toInt64Ptr(created.Unix())},
},
},
},
},
},
},
output: &testutil.Accumulator{
Metrics: []*testutil.Metric{
{
Measurement: nodeMeasurement,
Fields: map[string]interface{}{
"capacity_cpu_cores": int64(16),
"capacity_memory_bytes": int64(1.28837533696e+11),
"capacity_pods": int64(110),
"allocatable_cpu_cores": int64(16),
"allocatable_memory_bytes": int64(1.28732676096e+11),
"allocatable_pods": int64(110),
},
Tags: map[string]string{
"node_name": "node1",
},
},
},
},
hasError: false,
},
}
for _, v := range tests {
ks := &KubernetesInventory{
client: cli,
}
acc := new(testutil.Accumulator)
for _, node := range ((v.handler.responseMap["/nodes/"]).(*v1.NodeList)).Items {
err := ks.gatherNode(*node, acc)
if err != nil {
t.Errorf("Failed to gather node - %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 {
measurement := v.output.Metrics[i].Measurement
var keyTag string
switch measurement {
case nodeMeasurement:
keyTag = "node"
}
var j int
for j = range acc.Metrics {
if acc.Metrics[j].Measurement == measurement &&
acc.Metrics[j].Tags[keyTag] == v.output.Metrics[i].Tags[keyTag] {
break
}
}
for k, m := range v.output.Metrics[i].Tags {
if acc.Metrics[j].Tags[k] != m {
t.Fatalf("%s: tag %s metrics unmatch Expected %s, got %s, measurement %s, j %d\n", v.name, k, m, acc.Metrics[j].Tags[k], measurement, j)
}
}
for k, m := range v.output.Metrics[i].Fields {
if acc.Metrics[j].Fields[k] != m {
t.Fatalf("%s: field %s metrics unmatch Expected %v(%T), got %v(%T), measurement %s, j %d\n", v.name, k, m, m, acc.Metrics[j].Fields[k], acc.Metrics[i].Fields[k], measurement, j)
}
}
}
}
}
}