Add a tool for grabbing and parsing prometheus metrics

pkg/metrics/controller_manager_metrics.go

@@ -0,0 +1,59 @@
+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+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 metrics
+
+import (
+	"k8s.io/kubernetes/pkg/util/sets"
+
+	"github.com/prometheus/common/model"
+)
+
+var KnownControllerManagerMetrics = map[string][]string{
+	"etcd_helper_cache_entry_count":                  {},
+	"etcd_helper_cache_hit_count":                    {},
+	"etcd_helper_cache_miss_count":                   {},
+	"etcd_request_cache_add_latencies_summary":       {"quantile"},
+	"etcd_request_cache_add_latencies_summary_count": {},
+	"etcd_request_cache_add_latencies_summary_sum":   {},
+	"etcd_request_cache_get_latencies_summary":       {"quantile"},
+	"etcd_request_cache_get_latencies_summary_count": {},
+	"etcd_request_cache_get_latencies_summary_sum":   {},
+	"get_token_count":                                {},
+	"get_token_fail_count":                           {},
+	"rest_client_request_latency_microseconds":       {"url", "verb", "quantile"},
+	"rest_client_request_latency_microseconds_count": {"url", "verb"},
+	"rest_client_request_latency_microseconds_sum":   {"url", "verb"},
+	"rest_client_request_status_codes":               {"method", "code", "host"},
+}
+
+type ControllerManagerMetrics Metrics
+
+func NewControllerManagerMetrics() ControllerManagerMetrics {
+	result := NewMetrics()
+	for metric := range KnownControllerManagerMetrics {
+		result[metric] = make(model.Samples, 0)
+	}
+	return ControllerManagerMetrics(result)
+}
+
+func parseControllerManagerMetrics(data string, unknownMetrics sets.String) (ControllerManagerMetrics, error) {
+	result := NewControllerManagerMetrics()
+	if err := parseMetrics(data, KnownControllerManagerMetrics, (*Metrics)(&result), unknownMetrics); err != nil {
+		return ControllerManagerMetrics{}, err
+	}
+	return result, nil
+}