clean-up shared metrics code and remaining references (component-base's copy is a drop in replacement)

pkg/client/metrics/OWNERS

@@ -1,9 +0,0 @@
-# See the OWNERS docs at https://go.k8s.io/owners
-
-reviewers:
-- wojtek-t
-- eparis
-- krousey
-- jayunit100
-- fgrzadkowski
-- tmrts

pkg/client/metrics/prometheus/BUILD

@@ -1,29 +0,0 @@
-package(default_visibility = ["//visibility:public"])
-
-load(
-    "@io_bazel_rules_go//go:def.bzl",
-    "go_library",
-)
-
-go_library(
-    name = "go_default_library",
-    srcs = ["prometheus.go"],
-    importpath = "k8s.io/kubernetes/pkg/client/metrics/prometheus",
-    deps = [
-        "//staging/src/k8s.io/client-go/tools/metrics:go_default_library",
-        "//vendor/github.com/prometheus/client_golang/prometheus:go_default_library",
-    ],
-)
-
-filegroup(
-    name = "package-srcs",
-    srcs = glob(["**"]),
-    tags = ["automanaged"],
-    visibility = ["//visibility:private"],
-)
-
-filegroup(
-    name = "all-srcs",
-    srcs = [":package-srcs"],
-    tags = ["automanaged"],
-)

pkg/client/metrics/prometheus/prometheus.go

@@ -1,84 +0,0 @@
-/*
-Copyright 2016 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 prometheus creates and registers prometheus metrics with
-// rest clients. To use this package, you just have to import it.
-package prometheus
-
-import (
-	"net/url"
-	"time"
-
-	"k8s.io/client-go/tools/metrics"
-
-	"github.com/prometheus/client_golang/prometheus"
-)
-
-var (
-	// requestLatency is a Prometheus Summary metric type partitioned by
-	// "verb" and "url" labels. It is used for the rest client latency metrics.
-	requestLatency = prometheus.NewHistogramVec(
-		prometheus.HistogramOpts{
-			Name:    "rest_client_request_duration_seconds",
-			Help:    "Request latency in seconds. Broken down by verb and URL.",
-			Buckets: prometheus.ExponentialBuckets(0.001, 2, 10),
-		},
-		[]string{"verb", "url"},
-	)
-
-	// deprecatedRequestLatency is deprecated, please use requestLatency.
-	deprecatedRequestLatency = prometheus.NewHistogramVec(
-		prometheus.HistogramOpts{
-			Name:    "rest_client_request_latency_seconds",
-			Help:    "(Deprecated) Request latency in seconds. Broken down by verb and URL.",
-			Buckets: prometheus.ExponentialBuckets(0.001, 2, 10),
-		},
-		[]string{"verb", "url"},
-	)
-
-	requestResult = prometheus.NewCounterVec(
-		prometheus.CounterOpts{
-			Name: "rest_client_requests_total",
-			Help: "Number of HTTP requests, partitioned by status code, method, and host.",
-		},
-		[]string{"code", "method", "host"},
-	)
-)
-
-func init() {
-	prometheus.MustRegister(requestLatency)
-	prometheus.MustRegister(deprecatedRequestLatency)
-	prometheus.MustRegister(requestResult)
-	metrics.Register(&latencyAdapter{m: requestLatency, dm: deprecatedRequestLatency}, &resultAdapter{requestResult})
-}
-
-type latencyAdapter struct {
-	m  *prometheus.HistogramVec
-	dm *prometheus.HistogramVec
-}
-
-func (l *latencyAdapter) Observe(verb string, u url.URL, latency time.Duration) {
-	l.m.WithLabelValues(verb, u.String()).Observe(latency.Seconds())
-	l.dm.WithLabelValues(verb, u.String()).Observe(latency.Seconds())
-}
-
-type resultAdapter struct {
-	m *prometheus.CounterVec
-}
-
-func (r *resultAdapter) Increment(code, method, host string) {
-	r.m.WithLabelValues(code, method, host).Inc()
-}