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Merge pull request #650 from wanghaoran1988/add_crs_collector
Add collector for csr
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,8 @@ | ||
| # CertificateSigningRequest Metrics | ||
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| | Metric name| Metric type | Labels/tags | Status | | ||
| | ---------- | ----------- | ----------- | ----------- | | ||
| | kube_certificatesigningrequest_created| Gauge | `certificatesigningrequest`=<certificatesigningrequest-name>| STABLE | | ||
| | kube_certificatesigningrequest_condition | Gauge | `certificatesigningrequest`=<certificatesigningrequest-name> <br> `condition`=<approved\|denied> | STABLE | | ||
| | kube_certificatesigningrequest_labels | Gauge | `certificatesigningrequest`=<certificatesigningrequest-name>| STABLE | | ||
| | kube_certificatesigningrequest_cert_length | Gauge | `certificatesigningrequest`=<certificatesigningrequest-name>| STABLE | |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,152 @@ | ||
| /* | ||
| Copyright 2019 The Kubernetes Authors All rights reserved. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
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| package collector | ||
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| import ( | ||
| "k8s.io/kube-state-metrics/pkg/metric" | ||
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| certv1beta1 "k8s.io/api/certificates/v1beta1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| "k8s.io/apimachinery/pkg/watch" | ||
| clientset "k8s.io/client-go/kubernetes" | ||
| "k8s.io/client-go/tools/cache" | ||
| ) | ||
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| var ( | ||
| descCSRLabelsName = "kube_certificatesigningrequest_labels" | ||
| descCSRLabelsHelp = "Kubernetes labels converted to Prometheus labels." | ||
| descCSRLabelsDefaultLabels = []string{"certificatesigningrequest"} | ||
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| csrMetricFamilies = []metric.FamilyGenerator{ | ||
| { | ||
| Name: descCSRLabelsName, | ||
| Type: metric.Gauge, | ||
| Help: descCSRLabelsHelp, | ||
| GenerateFunc: wrapCSRFunc(func(j *certv1beta1.CertificateSigningRequest) *metric.Family { | ||
| labelKeys, labelValues := kubeLabelsToPrometheusLabels(j.Labels) | ||
| return &metric.Family{ | ||
| Metrics: []*metric.Metric{ | ||
| { | ||
| LabelKeys: labelKeys, | ||
| LabelValues: labelValues, | ||
| Value: 1, | ||
| }, | ||
| }, | ||
| } | ||
| }), | ||
| }, | ||
| { | ||
| Name: "kube_certificatesigningrequest_created", | ||
| Type: metric.Gauge, | ||
| Help: "Unix creation timestamp", | ||
| GenerateFunc: wrapCSRFunc(func(csr *certv1beta1.CertificateSigningRequest) *metric.Family { | ||
| ms := []*metric.Metric{} | ||
| if !csr.CreationTimestamp.IsZero() { | ||
| ms = append(ms, &metric.Metric{ | ||
| LabelKeys: []string{}, | ||
| LabelValues: []string{}, | ||
| Value: float64(csr.CreationTimestamp.Unix()), | ||
| }) | ||
| } | ||
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| return &metric.Family{ | ||
| Metrics: ms, | ||
| } | ||
| }), | ||
| }, | ||
| { | ||
| Name: "kube_certificatesigningrequest_condition", | ||
| Type: metric.Gauge, | ||
| Help: "The number of each certificatesigningrequest condition", | ||
| GenerateFunc: wrapCSRFunc(func(csr *certv1beta1.CertificateSigningRequest) *metric.Family { | ||
| return &metric.Family{ | ||
| Metrics: addCSRConditionMetrics(csr.Status), | ||
| } | ||
| }), | ||
| }, | ||
| { | ||
| Name: "kube_certificatesigningrequest_cert_length", | ||
| Type: metric.Gauge, | ||
| Help: "Length of the issued cert", | ||
| GenerateFunc: wrapCSRFunc(func(csr *certv1beta1.CertificateSigningRequest) *metric.Family { | ||
| return &metric.Family{ | ||
| Metrics: []*metric.Metric{ | ||
| { | ||
| LabelKeys: []string{}, | ||
| LabelValues: []string{}, | ||
| Value: float64(len(csr.Status.Certificate)), | ||
| }, | ||
| }, | ||
| } | ||
| }), | ||
| }, | ||
| } | ||
| ) | ||
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| func wrapCSRFunc(f func(*certv1beta1.CertificateSigningRequest) *metric.Family) func(interface{}) *metric.Family { | ||
| return func(obj interface{}) *metric.Family { | ||
| csr := obj.(*certv1beta1.CertificateSigningRequest) | ||
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| metricFamily := f(csr) | ||
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| for _, m := range metricFamily.Metrics { | ||
| m.LabelKeys = append(descCSRLabelsDefaultLabels, m.LabelKeys...) | ||
| m.LabelValues = append([]string{csr.Name}, m.LabelValues...) | ||
| } | ||
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| return metricFamily | ||
| } | ||
| } | ||
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| func createCSRListWatch(kubeClient clientset.Interface, ns string) cache.ListWatch { | ||
| return cache.ListWatch{ | ||
| ListFunc: func(opts metav1.ListOptions) (runtime.Object, error) { | ||
| return kubeClient.CertificatesV1beta1().CertificateSigningRequests().List(opts) | ||
| }, | ||
| WatchFunc: func(opts metav1.ListOptions) (watch.Interface, error) { | ||
| return kubeClient.CertificatesV1beta1().CertificateSigningRequests().Watch(opts) | ||
| }, | ||
| } | ||
| } | ||
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| // addCSRConditionMetrics generates one metric for each possible csr condition status | ||
| func addCSRConditionMetrics(cs certv1beta1.CertificateSigningRequestStatus) []*metric.Metric { | ||
| cApproved := 0 | ||
| cDenied := 0 | ||
| for _, s := range cs.Conditions { | ||
| if s.Type == certv1beta1.CertificateApproved { | ||
| cApproved++ | ||
| } | ||
| if s.Type == certv1beta1.CertificateDenied { | ||
| cDenied++ | ||
| } | ||
| } | ||
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| return []*metric.Metric{ | ||
| { | ||
| LabelValues: []string{"approved"}, | ||
| Value: float64(cApproved), | ||
| LabelKeys: []string{"condition"}, | ||
| }, | ||
| { | ||
| LabelValues: []string{"denied"}, | ||
| Value: float64(cDenied), | ||
| LabelKeys: []string{"condition"}, | ||
| }, | ||
| } | ||
| } |
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