| // Licensed to Apache Software Foundation (ASF) under one or more contributor |
| // license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright |
| // ownership. Apache Software Foundation (ASF) licenses this file to you 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. |
| |
| package provider |
| |
| import ( |
| "encoding/json" |
| |
| "github.com/apache/skywalking-cli/assets" |
| "github.com/apache/skywalking-cli/graphql/client" |
| swctlschema "github.com/apache/skywalking-cli/graphql/schema" |
| apiprovider "github.com/kubernetes-sigs/custom-metrics-apiserver/pkg/provider" |
| "github.com/machinebox/graphql" |
| "k8s.io/apimachinery/pkg/util/wait" |
| "k8s.io/klog/v2" |
| ) |
| |
| func (p *externalMetricsProvider) ListAllExternalMetrics() (externalMetricsInfo []apiprovider.ExternalMetricInfo) { |
| p.lock.RLock() |
| defer p.lock.RUnlock() |
| |
| for _, md := range p.metricDefines { |
| info := apiprovider.ExternalMetricInfo{ |
| Metric: md.Name, |
| } |
| externalMetricsInfo = append(externalMetricsInfo, info) |
| } |
| return |
| } |
| |
| func (p *externalMetricsProvider) sync() { |
| go wait.Until(func() { |
| if err := p.updateMetrics(); err != nil { |
| klog.Errorf("failed to update metrics: %v", err) |
| } |
| }, p.refreshRegistryInterval, wait.NeverStop) |
| } |
| |
| func (p *externalMetricsProvider) updateMetrics() error { |
| var response map[string][]*swctlschema.MetricDefinition |
| request := graphql.NewRequest(assets.Read("graphqls/metrics/ListMetrics.graphql")) |
| request.Var("regex", p.regex) |
| |
| err := client.ExecuteQuery(p.ctx, request, &response) |
| if err != nil { |
| return err |
| } |
| |
| mdd := response["result"] |
| klog.Infof("Get service metrics: %s", display(mdd)) |
| if len(mdd) > 0 { |
| p.lock.Lock() |
| defer p.lock.Unlock() |
| p.metricDefines = mdd |
| } |
| return nil |
| } |
| |
| func display(data interface{}) string { |
| bytes, e := json.Marshal(data) |
| if e != nil { |
| return "Error" |
| } |
| return string(bytes) |
| |
| } |