[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/github.com/coreos/etcd/etcdserver/metrics.go b/vendor/github.com/coreos/etcd/etcdserver/metrics.go
new file mode 100644
index 0000000..d543c30
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/etcdserver/metrics.go
@@ -0,0 +1,206 @@
+// 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 etcdserver
+
+import (
+ goruntime "runtime"
+ "time"
+
+ "github.com/coreos/etcd/pkg/runtime"
+ "github.com/coreos/etcd/version"
+ "github.com/prometheus/client_golang/prometheus"
+)
+
+var (
+ hasLeader = prometheus.NewGauge(prometheus.GaugeOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "has_leader",
+ Help: "Whether or not a leader exists. 1 is existence, 0 is not.",
+ })
+ isLeader = prometheus.NewGauge(prometheus.GaugeOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "is_leader",
+ Help: "Whether or not this member is a leader. 1 if is, 0 otherwise.",
+ })
+ leaderChanges = prometheus.NewCounter(prometheus.CounterOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "leader_changes_seen_total",
+ Help: "The number of leader changes seen.",
+ })
+ heartbeatSendFailures = prometheus.NewCounter(prometheus.CounterOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "heartbeat_send_failures_total",
+ Help: "The total number of leader heartbeat send failures (likely overloaded from slow disk).",
+ })
+ slowApplies = prometheus.NewCounter(prometheus.CounterOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "slow_apply_total",
+ Help: "The total number of slow apply requests (likely overloaded from slow disk).",
+ })
+ applySnapshotInProgress = prometheus.NewGauge(prometheus.GaugeOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "snapshot_apply_in_progress_total",
+ Help: "1 if the server is applying the incoming snapshot. 0 if none.",
+ })
+ proposalsCommitted = prometheus.NewGauge(prometheus.GaugeOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "proposals_committed_total",
+ Help: "The total number of consensus proposals committed.",
+ })
+ proposalsApplied = prometheus.NewGauge(prometheus.GaugeOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "proposals_applied_total",
+ Help: "The total number of consensus proposals applied.",
+ })
+ proposalsPending = prometheus.NewGauge(prometheus.GaugeOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "proposals_pending",
+ Help: "The current number of pending proposals to commit.",
+ })
+ proposalsFailed = prometheus.NewCounter(prometheus.CounterOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "proposals_failed_total",
+ Help: "The total number of failed proposals seen.",
+ })
+ leaseExpired = prometheus.NewCounter(prometheus.CounterOpts{
+ Namespace: "etcd_debugging",
+ Subsystem: "server",
+ Name: "lease_expired_total",
+ Help: "The total number of expired leases.",
+ })
+ slowReadIndex = prometheus.NewCounter(prometheus.CounterOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "slow_read_indexes_total",
+ Help: "The total number of pending read indexes not in sync with leader's or timed out read index requests.",
+ })
+ readIndexFailed = prometheus.NewCounter(prometheus.CounterOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "read_indexes_failed_total",
+ Help: "The total number of failed read indexes seen.",
+ })
+ quotaBackendBytes = prometheus.NewGauge(prometheus.GaugeOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "quota_backend_bytes",
+ Help: "Current backend storage quota size in bytes.",
+ })
+ currentVersion = prometheus.NewGaugeVec(prometheus.GaugeOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "version",
+ Help: "Which version is running. 1 for 'server_version' label with current version.",
+ },
+ []string{"server_version"})
+ currentGoVersion = prometheus.NewGaugeVec(prometheus.GaugeOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "go_version",
+ Help: "Which Go version server is running with. 1 for 'server_go_version' label with current version.",
+ },
+ []string{"server_go_version"})
+ serverID = prometheus.NewGaugeVec(prometheus.GaugeOpts{
+ Namespace: "etcd",
+ Subsystem: "server",
+ Name: "id",
+ Help: "Server or member ID in hexadecimal format. 1 for 'server_id' label with current ID.",
+ },
+ []string{"server_id"})
+
+ fdUsed = prometheus.NewGauge(prometheus.GaugeOpts{
+ Namespace: "os",
+ Subsystem: "fd",
+ Name: "used",
+ Help: "The number of used file descriptors.",
+ })
+ fdLimit = prometheus.NewGauge(prometheus.GaugeOpts{
+ Namespace: "os",
+ Subsystem: "fd",
+ Name: "limit",
+ Help: "The file descriptor limit.",
+ })
+)
+
+func init() {
+ prometheus.MustRegister(hasLeader)
+ prometheus.MustRegister(isLeader)
+ prometheus.MustRegister(leaderChanges)
+ prometheus.MustRegister(heartbeatSendFailures)
+ prometheus.MustRegister(slowApplies)
+ prometheus.MustRegister(applySnapshotInProgress)
+ prometheus.MustRegister(proposalsCommitted)
+ prometheus.MustRegister(proposalsApplied)
+ prometheus.MustRegister(proposalsPending)
+ prometheus.MustRegister(proposalsFailed)
+ prometheus.MustRegister(leaseExpired)
+ prometheus.MustRegister(slowReadIndex)
+ prometheus.MustRegister(readIndexFailed)
+ prometheus.MustRegister(quotaBackendBytes)
+ prometheus.MustRegister(currentVersion)
+ prometheus.MustRegister(currentGoVersion)
+ prometheus.MustRegister(serverID)
+ prometheus.MustRegister(fdUsed)
+ prometheus.MustRegister(fdLimit)
+
+ currentVersion.With(prometheus.Labels{
+ "server_version": version.Version,
+ }).Set(1)
+ currentGoVersion.With(prometheus.Labels{
+ "server_go_version": goruntime.Version(),
+ }).Set(1)
+}
+
+func monitorFileDescriptor(done <-chan struct{}) {
+ // This ticker will check File Descriptor Requirements ,and count all fds in used.
+ // And recorded some logs when in used >= limit/5*4. Just recorded message.
+ // If fds was more than 10K,It's low performance due to FDUsage() works.
+ // So need to increase it.
+ // See https://github.com/etcd-io/etcd/issues/11969 for more detail.
+ ticker := time.NewTicker(10 * time.Minute)
+ defer ticker.Stop()
+ for {
+ used, err := runtime.FDUsage()
+ if err != nil {
+ plog.Errorf("cannot monitor file descriptor usage (%v)", err)
+ return
+ }
+ fdUsed.Set(float64(used))
+ limit, err := runtime.FDLimit()
+ if err != nil {
+ plog.Errorf("cannot monitor file descriptor usage (%v)", err)
+ return
+ }
+ fdLimit.Set(float64(limit))
+ if used >= limit/5*4 {
+ plog.Warningf("80%% of the file descriptor limit is used [used = %d, limit = %d]", used, limit)
+ }
+ select {
+ case <-ticker.C:
+ case <-done:
+ return
+ }
+ }
+}