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statefulsets.go
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/
statefulsets.go
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// Copyright 2020 VMware, Inc. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
package kstate
import (
"reflect"
"time"
log "github.com/sirupsen/logrus"
"github.com/wavefronthq/observability-for-kubernetes/collector/internal/configuration"
"github.com/wavefronthq/observability-for-kubernetes/collector/internal/wf"
appsv1 "k8s.io/api/apps/v1"
)
func pointsForStatefulSet(item interface{}, transforms configuration.Transforms) []wf.Metric {
statefulset, ok := item.(*appsv1.StatefulSet)
if !ok {
log.Errorf("invalid type: %s", reflect.TypeOf(item).String())
return nil
}
tags := buildTags("statefulset", statefulset.Name, statefulset.Namespace, transforms.Tags)
now := time.Now().Unix()
desired := floatValOrDefault(statefulset.Spec.Replicas, 1.0)
ready := float64(statefulset.Status.ReadyReplicas)
current := float64(statefulset.Status.CurrentReplicas)
updated := float64(statefulset.Status.UpdatedReplicas)
workloadStatus := getWorkloadStatus(int32(desired), int32(ready))
reason, message := getWorkloadReasonAndMessageForStatefulSet(workloadStatus, statefulset)
workloadTags := buildWorkloadTags(workloadKindStatefulSet, statefulset.Name, statefulset.Namespace, int32(desired), int32(ready), reason, message, transforms.Tags)
return []wf.Metric{
metricPoint(transforms.Prefix, "statefulset.desired_replicas", desired, now, transforms.Source, tags),
metricPoint(transforms.Prefix, "statefulset.current_replicas", current, now, transforms.Source, tags),
metricPoint(transforms.Prefix, "statefulset.ready_replicas", ready, now, transforms.Source, tags),
metricPoint(transforms.Prefix, "statefulset.updated_replicas", updated, now, transforms.Source, tags),
buildWorkloadStatusMetric(transforms.Prefix, workloadStatus, now, transforms.Source, workloadTags),
}
}
func getWorkloadReasonAndMessageForStatefulSet(status float64, statefulset *appsv1.StatefulSet) (reason, message string) {
if status == workloadReady {
return "", ""
}
// TODO: return failure reason and message for StatefulSet
reason = "MinimumReplicasUnavailable"
message = "StatefulSet does not have minimum availability."
return reason, message
}