mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
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6c9cd3f7c1
This allows continuing object watch from the last bookbark instead of reloading all the objects on watch errors or timeouts. See https://kubernetes.io/docs/reference/using-api/api-concepts/#watch-bookmarks
103 lines
2.8 KiB
Go
103 lines
2.8 KiB
Go
package kubernetes
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import (
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"encoding/json"
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"fmt"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/promscrape/discoveryutils"
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)
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func (s *Service) key() string {
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return s.Metadata.key()
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}
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func parseServiceList(data []byte) (map[string]object, ListMeta, error) {
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var sl ServiceList
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if err := json.Unmarshal(data, &sl); err != nil {
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return nil, sl.Metadata, fmt.Errorf("cannot unmarshal ServiceList from %q: %w", data, err)
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}
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objectsByKey := make(map[string]object)
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for _, s := range sl.Items {
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objectsByKey[s.key()] = s
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}
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return objectsByKey, sl.Metadata, nil
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}
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func parseService(data []byte) (object, error) {
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var s Service
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if err := json.Unmarshal(data, &s); err != nil {
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return nil, err
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}
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return &s, nil
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}
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// ServiceList is k8s service list.
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//
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// See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.17/#servicelist-v1-core
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type ServiceList struct {
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Metadata ListMeta
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Items []*Service
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}
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// Service is k8s service.
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//
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// See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.17/#service-v1-core
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type Service struct {
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Metadata ObjectMeta
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Spec ServiceSpec
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}
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func (s *Service) resourceVersion() string {
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return s.Metadata.ResourceVersion
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}
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// ServiceSpec is k8s service spec.
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//
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// See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.17/#servicespec-v1-core
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type ServiceSpec struct {
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ClusterIP string
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ExternalName string
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Type string
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Ports []ServicePort
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}
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// ServicePort is k8s service port.
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//
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// See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.17/#serviceport-v1-core
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type ServicePort struct {
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Name string
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Protocol string
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Port int
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}
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// getTargetLabels returns labels for each port of the given s.
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//
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// See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#service
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func (s *Service) getTargetLabels(aw *apiWatcher) []map[string]string {
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host := fmt.Sprintf("%s.%s.svc", s.Metadata.Name, s.Metadata.Namespace)
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var ms []map[string]string
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for _, sp := range s.Spec.Ports {
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addr := discoveryutils.JoinHostPort(host, sp.Port)
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m := map[string]string{
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"__address__": addr,
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"__meta_kubernetes_service_port_name": sp.Name,
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"__meta_kubernetes_service_port_protocol": sp.Protocol,
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}
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s.appendCommonLabels(m)
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ms = append(ms, m)
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}
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return ms
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}
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func (s *Service) appendCommonLabels(m map[string]string) {
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m["__meta_kubernetes_namespace"] = s.Metadata.Namespace
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m["__meta_kubernetes_service_name"] = s.Metadata.Name
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m["__meta_kubernetes_service_type"] = s.Spec.Type
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if s.Spec.Type != "ExternalName" {
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m["__meta_kubernetes_service_cluster_ip"] = s.Spec.ClusterIP
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} else {
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m["__meta_kubernetes_service_external_name"] = s.Spec.ExternalName
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}
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s.Metadata.registerLabelsAndAnnotations("__meta_kubernetes_service", m)
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}
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