Travis Nielsen
4edcff04f7
The prometheus rules had been previously created if the cephcluster CR setting monitoring.enabled was set to true. The rules were not customizable and therefore not flexible enough. Now the rules are installed by the helm chart. To customize the rules, a post-processor can be applied to the helm chart. Signed-off-by: Travis Nielsen <tnielsen@redhat.com>
89 lines
3.2 KiB
Go
89 lines
3.2 KiB
Go
/*
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Copyright 2020 The Rook Authors. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// Package k8sutil for Kubernetes helpers.
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package k8sutil
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import (
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"bytes"
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"context"
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"fmt"
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"io/ioutil"
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"path/filepath"
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monitoringv1 "github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1"
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monitoringclient "github.com/prometheus-operator/prometheus-operator/pkg/client/versioned"
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kerrors "k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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k8sYAML "k8s.io/apimachinery/pkg/util/yaml"
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"k8s.io/client-go/tools/clientcmd"
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)
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func getMonitoringClient() (*monitoringclient.Clientset, error) {
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cfg, err := clientcmd.BuildConfigFromFlags("", "")
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if err != nil {
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return nil, fmt.Errorf("failed to build config. %v", err)
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}
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client, err := monitoringclient.NewForConfig(cfg)
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if err != nil {
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return nil, fmt.Errorf("failed to get monitoring client. %v", err)
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}
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return client, nil
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}
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// GetServiceMonitor returns servicemonitor or an error
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func GetServiceMonitor(filePath string) (*monitoringv1.ServiceMonitor, error) {
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file, err := ioutil.ReadFile(filepath.Clean(filePath))
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if err != nil {
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return nil, fmt.Errorf("servicemonitor file could not be fetched. %v", err)
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}
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var servicemonitor monitoringv1.ServiceMonitor
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err = k8sYAML.NewYAMLOrJSONDecoder(bytes.NewBufferString(string(file)), 1000).Decode(&servicemonitor)
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if err != nil {
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return nil, fmt.Errorf("servicemonitor could not be decoded. %v", err)
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}
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return &servicemonitor, nil
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}
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// CreateOrUpdateServiceMonitor creates serviceMonitor object or an error
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func CreateOrUpdateServiceMonitor(ctx context.Context, serviceMonitorDefinition *monitoringv1.ServiceMonitor) (*monitoringv1.ServiceMonitor, error) {
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name := serviceMonitorDefinition.GetName()
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namespace := serviceMonitorDefinition.GetNamespace()
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logger.Debugf("creating servicemonitor %s", name)
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client, err := getMonitoringClient()
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if err != nil {
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return nil, fmt.Errorf("failed to get monitoring client. %v", err)
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}
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oldSm, err := client.MonitoringV1().ServiceMonitors(namespace).Get(ctx, name, metav1.GetOptions{})
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if err != nil {
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if kerrors.IsNotFound(err) {
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sm, err := client.MonitoringV1().ServiceMonitors(namespace).Create(ctx, serviceMonitorDefinition, metav1.CreateOptions{})
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if err != nil {
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return nil, fmt.Errorf("failed to create servicemonitor. %v", err)
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}
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return sm, nil
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}
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return nil, fmt.Errorf("failed to retrieve servicemonitor. %v", err)
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}
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oldSm.Spec = serviceMonitorDefinition.Spec
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oldSm.ObjectMeta.Labels = serviceMonitorDefinition.ObjectMeta.Labels
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sm, err := client.MonitoringV1().ServiceMonitors(namespace).Update(ctx, oldSm, metav1.UpdateOptions{})
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if err != nil {
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return nil, fmt.Errorf("failed to update servicemonitor. %v", err)
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}
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return sm, nil
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}
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