Update vendor

(cherry picked from commit 7e84f96c0f)

vendor/k8s.io/component-base/metrics/legacyregistry/registry.go

@@ -0,0 +1,85 @@
+/*
+Copyright 2019 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.
+*/
+
+package legacyregistry
+
+import (
+	"net/http"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+
+	"k8s.io/component-base/metrics"
+)
+
+var (
+	defaultRegistry = metrics.NewKubeRegistry()
+	// DefaultGatherer exposes the global registry gatherer
+	DefaultGatherer metrics.Gatherer = defaultRegistry
+)
+
+func init() {
+	RawMustRegister(prometheus.NewProcessCollector(prometheus.ProcessCollectorOpts{}))
+	RawMustRegister(prometheus.NewGoCollector())
+}
+
+// Handler returns an HTTP handler for the DefaultGatherer. It is
+// already instrumented with InstrumentHandler (using "prometheus" as handler
+// name).
+//
+// Deprecated: Please note the issues described in the doc comment of
+// InstrumentHandler. You might want to consider using promhttp.Handler instead.
+func Handler() http.Handler {
+	return promhttp.InstrumentMetricHandler(prometheus.DefaultRegisterer, promhttp.HandlerFor(defaultRegistry, promhttp.HandlerOpts{}))
+}
+
+// Register registers a collectable metric but uses the global registry
+func Register(c metrics.Registerable) error {
+	err := defaultRegistry.Register(c)
+	return err
+}
+
+// MustRegister registers registerable metrics but uses the global registry.
+func MustRegister(cs ...metrics.Registerable) {
+	defaultRegistry.MustRegister(cs...)
+}
+
+// RawMustRegister registers prometheus collectors but uses the global registry, this
+// bypasses the metric stability framework
+//
+// Deprecated
+func RawMustRegister(cs ...prometheus.Collector) {
+	defaultRegistry.RawMustRegister(cs...)
+}
+
+// CustomRegister registers a custom collector but uses the global registry.
+func CustomRegister(c metrics.StableCollector) error {
+	err := defaultRegistry.CustomRegister(c)
+
+	//TODO(RainbowMango): Maybe we can wrap this error by error wrapping.(Golang 1.13)
+	_ = prometheus.Register(c)
+
+	return err
+}
+
+// CustomMustRegister registers custom collectors but uses the global registry.
+func CustomMustRegister(cs ...metrics.StableCollector) {
+	defaultRegistry.CustomMustRegister(cs...)
+
+	for _, c := range cs {
+		prometheus.MustRegister(c)
+	}
+}