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Support DaemonSet and StatefulSet in discovery and decoration (1.2 ba…
…ckport) (#572) * Support DaemonSet and StatefulSet in discovery and decoration (#571) * Integration tests for daemonset and statefulset metadata decoration * Support replicaset and daemonset decoration and discovery * Prometheus exporter: add k8s_replicaset_name, k8s_daemonset_name and k8s_statefulset_name attributes
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| package kube | ||
|
|
||
| import ( | ||
| "strings" | ||
|
|
||
| v1 "k8s.io/api/core/v1" | ||
| ) | ||
|
|
||
| const ( | ||
| NamespaceName = "k8s.namespace.name" | ||
| PodName = "k8s.pod.name" | ||
| DeploymentName = "k8s.deployment.name" | ||
| ReplicaSetName = "k8s.replicaset.name" | ||
| DaemonSetName = "k8s.daemonset.name" | ||
| StatefulSetName = "k8s.statefulset.name" | ||
| NodeName = "k8s.node.name" | ||
| PodUID = "k8s.pod.uid" | ||
| PodStartTime = "k8s.pod.start_time" | ||
| ) | ||
|
|
||
| type OwnerType int | ||
|
|
||
| const ( | ||
| OwnerUnknown = OwnerType(iota) | ||
| OwnerReplicaSet | ||
| OwnerDeployment | ||
| OwnerStatefulSet | ||
| OwnerDaemonSet | ||
| ) | ||
|
|
||
| func (o OwnerType) LabelName() string { | ||
| switch o { | ||
| case OwnerReplicaSet: | ||
| return ReplicaSetName | ||
| case OwnerDeployment: | ||
| return DeploymentName | ||
| case OwnerStatefulSet: | ||
| return StatefulSetName | ||
| case OwnerDaemonSet: | ||
| return DaemonSetName | ||
| default: | ||
| return "k8s.unknown.owner" | ||
| } | ||
| } | ||
|
|
||
| type Owner struct { | ||
| Type OwnerType | ||
| Name string | ||
| // Owner of the owner. For example, a ReplicaSet might be owned by a Deployment | ||
| Owner *Owner | ||
| } | ||
|
|
||
| // OwnerFromPodInfo returns the pod Owner reference. It might be | ||
| // null if the Pod does not have any owner | ||
| func OwnerFromPodInfo(pod *v1.Pod) *Owner { | ||
| for i := range pod.OwnerReferences { | ||
| or := &pod.OwnerReferences[i] | ||
| if or.APIVersion != "apps/v1" { | ||
| continue | ||
| } | ||
| switch or.Kind { | ||
| case "ReplicaSet": | ||
| return &Owner{Type: OwnerReplicaSet, Name: or.Name} | ||
| case "Deployment": | ||
| return &Owner{Type: OwnerDeployment, Name: or.Name} | ||
| case "StatefulSet": | ||
| return &Owner{Type: OwnerStatefulSet, Name: or.Name} | ||
| case "DaemonSet": | ||
| return &Owner{Type: OwnerDaemonSet, Name: or.Name} | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (o *Owner) String() string { | ||
| sb := strings.Builder{} | ||
| o.string(&sb) | ||
| return sb.String() | ||
| } | ||
|
|
||
| func (o *Owner) string(sb *strings.Builder) { | ||
| if o.Owner != nil { | ||
| o.Owner.string(sb) | ||
| sb.WriteString("->") | ||
| } | ||
| sb.WriteString(o.Type.LabelName()) | ||
| sb.WriteByte(':') | ||
| sb.WriteString(o.Name) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| package kube | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/assert" | ||
| ) | ||
|
|
||
| func TestOwnerString(t *testing.T) { | ||
| owner := Owner{Type: OwnerReplicaSet, Name: "rs"} | ||
| assert.Equal(t, "k8s.replicaset.name:rs", owner.String()) | ||
| owner.Owner = &Owner{Type: OwnerDeployment, Name: "dep"} | ||
| assert.Equal(t, "k8s.deployment.name:dep->k8s.replicaset.name:rs", owner.String()) | ||
| } |
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