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127 lines
3.8 KiB
Go
127 lines
3.8 KiB
Go
// +build !providerless
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/*
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Copyright 2018 The Kubernetes Authors.
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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 metrics
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import (
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"strings"
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"time"
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"k8s.io/component-base/metrics"
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"k8s.io/component-base/metrics/legacyregistry"
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)
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type apiCallMetrics struct {
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latency *metrics.HistogramVec
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errors *metrics.CounterVec
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rateLimitedCount *metrics.CounterVec
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throttledCount *metrics.CounterVec
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}
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var (
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metricLabels = []string{
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"request", // API function that is being invoked
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"resource_group", // Resource group of the resource being monitored
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"subscription_id", // Subscription ID of the resource being monitored
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"source", // Oeration source(optional)
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}
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apiMetrics = registerAPIMetrics(metricLabels...)
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)
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// MetricContext indicates the context for Azure client metrics.
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type MetricContext struct {
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start time.Time
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attributes []string
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}
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// NewMetricContext creates a new MetricContext.
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func NewMetricContext(prefix, request, resourceGroup, subscriptionID, source string) *MetricContext {
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return &MetricContext{
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start: time.Now(),
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attributes: []string{prefix + "_" + request, strings.ToLower(resourceGroup), subscriptionID, source},
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}
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}
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// RateLimitedCount records the metrics for rate limited request count.
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func (mc *MetricContext) RateLimitedCount() {
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apiMetrics.rateLimitedCount.WithLabelValues(mc.attributes...).Inc()
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}
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// ThrottledCount records the metrics for throttled request count.
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func (mc *MetricContext) ThrottledCount() {
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apiMetrics.throttledCount.WithLabelValues(mc.attributes...).Inc()
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}
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// Observe observes the request latency and failed requests.
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func (mc *MetricContext) Observe(err error) error {
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apiMetrics.latency.WithLabelValues(mc.attributes...).Observe(
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time.Since(mc.start).Seconds())
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if err != nil {
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apiMetrics.errors.WithLabelValues(mc.attributes...).Inc()
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}
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return err
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}
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// registerAPIMetrics registers the API metrics.
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func registerAPIMetrics(attributes ...string) *apiCallMetrics {
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metrics := &apiCallMetrics{
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latency: metrics.NewHistogramVec(
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&metrics.HistogramOpts{
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Name: "cloudprovider_azure_api_request_duration_seconds",
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Help: "Latency of an Azure API call",
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Buckets: []float64{.1, .25, .5, 1, 2.5, 5, 10, 15, 25, 50, 120, 300, 600, 1200},
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StabilityLevel: metrics.ALPHA,
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},
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attributes,
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),
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errors: metrics.NewCounterVec(
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&metrics.CounterOpts{
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Name: "cloudprovider_azure_api_request_errors",
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Help: "Number of errors for an Azure API call",
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StabilityLevel: metrics.ALPHA,
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},
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attributes,
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),
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rateLimitedCount: metrics.NewCounterVec(
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&metrics.CounterOpts{
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Name: "cloudprovider_azure_api_request_ratelimited_count",
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Help: "Number of rate limited Azure API calls",
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StabilityLevel: metrics.ALPHA,
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},
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attributes,
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),
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throttledCount: metrics.NewCounterVec(
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&metrics.CounterOpts{
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Name: "cloudprovider_azure_api_request_throttled_count",
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Help: "Number of throttled Azure API calls",
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StabilityLevel: metrics.ALPHA,
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},
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attributes,
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),
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}
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legacyregistry.MustRegister(metrics.latency)
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legacyregistry.MustRegister(metrics.errors)
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legacyregistry.MustRegister(metrics.rateLimitedCount)
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legacyregistry.MustRegister(metrics.throttledCount)
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return metrics
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}
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