mirror of https://github.com/linkerd/linkerd2.git
113 lines
3.4 KiB
Go
113 lines
3.4 KiB
Go
/*
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Kubernetes labels and annotations used in Conduit's control plane and data plane
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Kubernetes configs.
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*/
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package k8s
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import (
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"fmt"
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"strings"
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"github.com/runconduit/conduit/pkg/version"
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k8sV1 "k8s.io/api/apps/v1"
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meta "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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const (
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/*
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* Labels
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*/
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// ControllerComponentLabel identifies this object as a component of Conduit's
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// control plane (e.g. web, controller).
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ControllerComponentLabel = "conduit.io/control-plane-component"
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// ControllerNSLabel is injected into mesh-enabled apps, identifying the
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// namespace of the Conduit control plane.
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ControllerNSLabel = "conduit.io/control-plane-ns"
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// ProxyDeploymentLabel is injected into mesh-enabled apps, identifying the
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// deployment that this proxy belongs to.
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ProxyDeploymentLabel = "conduit.io/proxy-deployment"
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// ProxyReplicationControllerLabel is injected into mesh-enabled apps,
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// identifying the ReplicationController that this proxy belongs to.
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ProxyReplicationControllerLabel = "conduit.io/proxy-replication-controller"
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// ProxyReplicaSetLabel is injected into mesh-enabled apps, identifying the
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// ReplicaSet that this proxy belongs to.
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ProxyReplicaSetLabel = "conduit.io/proxy-replica-set"
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// ProxyJobLabel is injected into mesh-enabled apps, identifying the Job that
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// this proxy belongs to.
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ProxyJobLabel = "conduit.io/proxy-job"
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// ProxyDaemonSetLabel is injected into mesh-enabled apps, identifying the
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// DaemonSet that this proxy belongs to.
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ProxyDaemonSetLabel = "conduit.io/proxy-daemon-set"
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// ProxyStatefulSetLabel is injected into mesh-enabled apps, identifying the
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// StatefulSet that this proxy belongs to.
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ProxyStatefulSetLabel = "conduit.io/proxy-stateful-set"
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/*
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* Annotations
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*/
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// CreatedByAnnotation indicates the source of the injected data plane
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// (e.g. conduit/cli v0.1.3).
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CreatedByAnnotation = "conduit.io/created-by"
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// ProxyVersionAnnotation indicates the version of the injected data plane
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// (e.g. v0.1.3).
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ProxyVersionAnnotation = "conduit.io/proxy-version"
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)
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var proxyLabels = []string{
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ControllerNSLabel,
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ProxyDeploymentLabel,
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ProxyReplicationControllerLabel,
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ProxyReplicaSetLabel,
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ProxyJobLabel,
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ProxyDaemonSetLabel,
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ProxyStatefulSetLabel,
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k8sV1.DefaultDeploymentUniqueLabelKey,
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}
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// CreatedByAnnotationValue returns the value associated with
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// CreatedByAnnotation.
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func CreatedByAnnotationValue() string {
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return fmt.Sprintf("conduit/cli %s", version.Version)
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}
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// GetOwnerLabels returns the set of prometheus owner labels that can be
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// extracted from the proxy labels that have been added to an injected
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// kubernetes resource
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func GetOwnerLabels(objectMeta meta.ObjectMeta) map[string]string {
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labels := make(map[string]string)
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for _, label := range proxyLabels {
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if labelValue, ok := objectMeta.Labels[label]; ok {
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labels[toOwnerLabel(label)] = labelValue
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}
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}
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return labels
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}
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func GetControllerNs(objectMeta meta.ObjectMeta) string {
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return objectMeta.Labels[ControllerNSLabel]
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}
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// toOwnerLabel converts a proxy label to a prometheus label, following the
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// relabel conventions from the prometheus scrape config file
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func toOwnerLabel(proxyLabel string) string {
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if proxyLabel == ControllerNSLabel {
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return "conduit_io_control_plane_ns"
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}
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stripped := strings.TrimPrefix(proxyLabel, "conduit.io/proxy-")
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if stripped == "job" {
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return "k8s_job"
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}
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return strings.Replace(stripped, "-", "_", -1)
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}
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