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Add etcd-manager metrics, add openstack API metrics
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| load("@io_bazel_rules_go//go:def.bzl", "go_library") | ||
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| go_library( | ||
| name = "metrics", | ||
| srcs = ["metrics.go"], | ||
| importpath = "sigs.k8s.io/etcdadm/etcd-manager/pkg/metrics", | ||
| visibility = ["//visibility:public"], | ||
| deps = [ | ||
| "//pkg/volumes/openstack", | ||
| "//vendor/github.com/prometheus/client_golang/prometheus", | ||
| "//vendor/github.com/prometheus/client_golang/prometheus/promhttp", | ||
| "//vendor/k8s.io/klog/v2:klog", | ||
| ], | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| /* | ||
| Copyright 2021 The Kubernetes Authors. | ||
| 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 metrics | ||
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| import ( | ||
| "fmt" | ||
| "net/http" | ||
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| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/prometheus/client_golang/prometheus/promhttp" | ||
| "k8s.io/klog/v2" | ||
| "sigs.k8s.io/etcdadm/etcd-manager/pkg/volumes/openstack" | ||
| ) | ||
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| func RegisterMetrics(port int, provider string) { | ||
| if provider == "openstack" { | ||
| openstack.RegisterMetrics() | ||
| } | ||
| http.Handle("/metrics", promhttp.HandlerFor( | ||
| prometheus.DefaultGatherer, | ||
| promhttp.HandlerOpts{ | ||
| EnableOpenMetrics: true, | ||
| }, | ||
| )) | ||
| klog.Infof("Listening etcd-manager metrics in port %d", port) | ||
| err := http.ListenAndServe(fmt.Sprintf(":%d", port), nil) | ||
| if err != nil { | ||
| klog.Fatalf("Unable to start etcd-manager metrics: %v", err) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| /* | ||
| Copyright 2021 The Kubernetes Authors. | ||
| 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 openstack | ||
|
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| import ( | ||
| "time" | ||
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| "github.com/prometheus/client_golang/prometheus" | ||
| ) | ||
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| type OpenstackMetrics struct { | ||
| Duration *prometheus.HistogramVec | ||
| Total *prometheus.CounterVec | ||
| Errors *prometheus.CounterVec | ||
| } | ||
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| // MetricContext indicates the context for OpenStack metrics. | ||
| type MetricContext struct { | ||
| Start time.Time | ||
| Attributes []string | ||
| Metrics *OpenstackMetrics | ||
| } | ||
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| // NewMetricContext creates a new MetricContext. | ||
| func NewMetricContext(resource string, request string) *MetricContext { | ||
| return &MetricContext{ | ||
| Start: time.Now(), | ||
| Attributes: []string{resource + "_" + request}, | ||
| } | ||
| } | ||
|
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| // ObserveRequest records the request latency and counts the errors. | ||
| func (mc *MetricContext) Observe(om *OpenstackMetrics, err error) error { | ||
| if om == nil { | ||
| // mc.RequestMetrics not set, ignore this request | ||
| return nil | ||
| } | ||
|
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| om.Duration.WithLabelValues(mc.Attributes...).Observe( | ||
| time.Since(mc.Start).Seconds()) | ||
| om.Total.WithLabelValues(mc.Attributes...).Inc() | ||
| if err != nil { | ||
| om.Errors.WithLabelValues(mc.Attributes...).Inc() | ||
| } | ||
| return err | ||
| } | ||
|
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| func RegisterMetrics() { | ||
| doRegisterAPIMetrics() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| /* | ||
| Copyright 2021 The Kubernetes Authors. | ||
| 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 openstack | ||
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| import ( | ||
| "sync" | ||
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| "github.com/prometheus/client_golang/prometheus" | ||
| ) | ||
|
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| var ( | ||
| APIRequestMetrics = &OpenstackMetrics{ | ||
| Duration: prometheus.NewHistogramVec( | ||
| prometheus.HistogramOpts{ | ||
| Name: "openstack_api_request_duration_seconds", | ||
| Help: "Latency of an OpenStack API call", | ||
| }, []string{"request"}), | ||
| Total: prometheus.NewCounterVec( | ||
| prometheus.CounterOpts{ | ||
| Name: "openstack_api_requests_total", | ||
| Help: "Total number of OpenStack API calls", | ||
| }, []string{"request"}), | ||
| Errors: prometheus.NewCounterVec( | ||
| prometheus.CounterOpts{ | ||
| Name: "openstack_api_request_errors_total", | ||
| Help: "Total number of errors for an OpenStack API call", | ||
| }, []string{"request"}), | ||
| } | ||
| ) | ||
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| // ObserveRequest records the request latency and counts the errors. | ||
| func (mc *MetricContext) ObserveRequest(err error) error { | ||
| return mc.Observe(APIRequestMetrics, err) | ||
| } | ||
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| var registerAPIMetrics sync.Once | ||
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| // RegisterMetrics registers OpenStack metrics. | ||
| func doRegisterAPIMetrics() { | ||
| registerAPIMetrics.Do(func() { | ||
| prometheus.MustRegister( | ||
| APIRequestMetrics.Duration, | ||
| APIRequestMetrics.Total, | ||
| APIRequestMetrics.Errors, | ||
| ) | ||
| }) | ||
| } |
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