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// 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 cmd
import (
"context"
"encoding/binary"
"fmt"
"math"
"math/rand"
"os"
"strings"
"time"
v3 "go.etcd.io/etcd/client/v3"
"go.etcd.io/etcd/pkg/v3/report"
"github.com/dustin/go-humanize"
"github.com/spf13/cobra"
"golang.org/x/time/rate"
"gopkg.in/cheggaaa/pb.v1"
)
// putCmd represents the put command
var putCmd = &cobra.Command{
Use: "put",
Short: "Benchmark put",
Run: putFunc,
}
var (
keySize int
valSize int
putTotal int
putRate int
keySpaceSize int
seqKeys bool
compactInterval time.Duration
compactIndexDelta int64
checkHashkv bool
)
func init() {
RootCmd.AddCommand(putCmd)
putCmd.Flags().IntVar(&keySize, "key-size", 8, "Key size of put request")
putCmd.Flags().IntVar(&valSize, "val-size", 8, "Value size of put request")
putCmd.Flags().IntVar(&putRate, "rate", 0, "Maximum puts per second (0 is no limit)")
putCmd.Flags().IntVar(&putTotal, "total", 10000, "Total number of put requests")
putCmd.Flags().IntVar(&keySpaceSize, "key-space-size", 1, "Maximum possible keys")
putCmd.Flags().BoolVar(&seqKeys, "sequential-keys", false, "Use sequential keys")
putCmd.Flags().DurationVar(&compactInterval, "compact-interval", 0, `Interval to compact database (do not duplicate this with etcd's 'auto-compaction-retention' flag) (e.g. --compact-interval=5m compacts every 5-minute)`)
putCmd.Flags().Int64Var(&compactIndexDelta, "compact-index-delta", 1000, "Delta between current revision and compact revision (e.g. current revision 10000, compact at 9000)")
putCmd.Flags().BoolVar(&checkHashkv, "check-hashkv", false, "'true' to check hashkv")
}
func putFunc(cmd *cobra.Command, args []string) {
if keySpaceSize <= 0 {
fmt.Fprintf(os.Stderr, "expected positive --key-space-size, got (%v)", keySpaceSize)
os.Exit(1)
}
requests := make(chan v3.Op, totalClients)
if putRate == 0 {
putRate = math.MaxInt32
}
limit := rate.NewLimiter(rate.Limit(putRate), 1)
clients := mustCreateClients(totalClients, totalConns)
k, v := make([]byte, keySize), string(mustRandBytes(valSize))
bar = pb.New(putTotal)
bar.Format("Bom !")
bar.Start()
r := newReport()
for i := range clients {
wg.Add(1)
go func(c *v3.Client) {
defer wg.Done()
for op := range requests {
limit.Wait(context.Background())
st := time.Now()
_, err := c.Do(context.Background(), op)
r.Results() <- report.Result{Err: err, Start: st, End: time.Now()}
bar.Increment()
}
}(clients[i])
}
go func() {
for i := 0; i < putTotal; i++ {
if seqKeys {
binary.PutVarint(k, int64(i%keySpaceSize))
} else {
binary.PutVarint(k, int64(rand.Intn(keySpaceSize)))
}
requests <- v3.OpPut(string(k), v)
}
close(requests)
}()
if compactInterval > 0 {
go func() {
for {
time.Sleep(compactInterval)
compactKV(clients)
}
}()
}
rc := r.Run()
wg.Wait()
close(r.Results())
bar.Finish()
fmt.Println(<-rc)
if checkHashkv {
hashKV(cmd, clients)
}
}
func compactKV(clients []*v3.Client) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
resp, err := clients[0].KV.Get(ctx, "foo")
cancel()
if err != nil {
panic(err)
}
revToCompact := max(0, resp.Header.Revision-compactIndexDelta)
ctx, cancel = context.WithTimeout(context.Background(), 5*time.Second)
_, err = clients[0].KV.Compact(ctx, revToCompact)
cancel()
if err != nil {
panic(err)
}
}
func max(n1, n2 int64) int64 {
if n1 > n2 {
return n1
}
return n2
}
func hashKV(cmd *cobra.Command, clients []*v3.Client) {
eps, err := cmd.Flags().GetStringSlice("endpoints")
if err != nil {
panic(err)
}
for i, ip := range eps {
eps[i] = strings.TrimSpace(ip)
}
host := eps[0]
st := time.Now()
clients[0].HashKV(context.Background(), eps[0], 0)
rh, eh := clients[0].HashKV(context.Background(), host, 0)
if eh != nil {
fmt.Fprintf(os.Stderr, "Failed to get the hashkv of endpoint %s (%v)\n", host, eh)
panic(err)
}
rt, es := clients[0].Status(context.Background(), host)
if es != nil {
fmt.Fprintf(os.Stderr, "Failed to get the status of endpoint %s (%v)\n", host, es)
panic(err)
}
rs := "HashKV Summary:\n"
rs += fmt.Sprintf("\tHashKV: %d\n", rh.Hash)
rs += fmt.Sprintf("\tEndpoint: %s\n", host)
rs += fmt.Sprintf("\tTime taken to get hashkv: %v\n", time.Since(st))
rs += fmt.Sprintf("\tDB size: %s", humanize.Bytes(uint64(rt.DbSize)))
fmt.Println(rs)
}
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