[VOL-2235] Mocks and interfaces for rw-core
This update consists of mocks that are used by the rw-core
during unit testing. It also includes interfaces used for unit
tests.
Change-Id: I20ca1455c358113c3aa897acc6355e0ddbc614b7
diff --git a/vendor/go.etcd.io/etcd/etcdserver/api/v2http/metrics.go b/vendor/go.etcd.io/etcd/etcdserver/api/v2http/metrics.go
new file mode 100644
index 0000000..14f7da0
--- /dev/null
+++ b/vendor/go.etcd.io/etcd/etcdserver/api/v2http/metrics.go
@@ -0,0 +1,99 @@
+// Copyright 2015 The etcd 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 v2http
+
+import (
+ "strconv"
+ "time"
+
+ "net/http"
+
+ "go.etcd.io/etcd/etcdserver/api/v2error"
+ "go.etcd.io/etcd/etcdserver/api/v2http/httptypes"
+ "go.etcd.io/etcd/etcdserver/etcdserverpb"
+
+ "github.com/prometheus/client_golang/prometheus"
+)
+
+var (
+ incomingEvents = prometheus.NewCounterVec(
+ prometheus.CounterOpts{
+ Namespace: "etcd",
+ Subsystem: "http",
+ Name: "received_total",
+ Help: "Counter of requests received into the system (successfully parsed and authd).",
+ }, []string{"method"})
+
+ failedEvents = prometheus.NewCounterVec(
+ prometheus.CounterOpts{
+ Namespace: "etcd",
+ Subsystem: "http",
+ Name: "failed_total",
+ Help: "Counter of handle failures of requests (non-watches), by method (GET/PUT etc.) and code (400, 500 etc.).",
+ }, []string{"method", "code"})
+
+ successfulEventsHandlingSec = prometheus.NewHistogramVec(
+ prometheus.HistogramOpts{
+ Namespace: "etcd",
+ Subsystem: "http",
+ Name: "successful_duration_seconds",
+ Help: "Bucketed histogram of processing time (s) of successfully handled requests (non-watches), by method (GET/PUT etc.).",
+
+ // lowest bucket start of upper bound 0.0005 sec (0.5 ms) with factor 2
+ // highest bucket start of 0.0005 sec * 2^12 == 2.048 sec
+ Buckets: prometheus.ExponentialBuckets(0.0005, 2, 13),
+ }, []string{"method"})
+)
+
+func init() {
+ prometheus.MustRegister(incomingEvents)
+ prometheus.MustRegister(failedEvents)
+ prometheus.MustRegister(successfulEventsHandlingSec)
+}
+
+func reportRequestReceived(request etcdserverpb.Request) {
+ incomingEvents.WithLabelValues(methodFromRequest(request)).Inc()
+}
+
+func reportRequestCompleted(request etcdserverpb.Request, startTime time.Time) {
+ method := methodFromRequest(request)
+ successfulEventsHandlingSec.WithLabelValues(method).Observe(time.Since(startTime).Seconds())
+}
+
+func reportRequestFailed(request etcdserverpb.Request, err error) {
+ method := methodFromRequest(request)
+ failedEvents.WithLabelValues(method, strconv.Itoa(codeFromError(err))).Inc()
+}
+
+func methodFromRequest(request etcdserverpb.Request) string {
+ if request.Method == "GET" && request.Quorum {
+ return "QGET"
+ }
+ return request.Method
+}
+
+func codeFromError(err error) int {
+ if err == nil {
+ return http.StatusInternalServerError
+ }
+ switch e := err.(type) {
+ case *v2error.Error:
+ return e.StatusCode()
+ case *httptypes.HTTPError:
+ return e.Code
+ default:
+ return http.StatusInternalServerError
+ }
+}