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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"
"fmt"
"math"
"os"
"time"
v3 "go.etcd.io/etcd/client/v3"
"go.etcd.io/etcd/pkg/v3/report"
"github.com/spf13/cobra"
"golang.org/x/time/rate"
"gopkg.in/cheggaaa/pb.v1"
)
// rangeCmd represents the range command
var rangeCmd = &cobra.Command{
Use: "range key [end-range]",
Short: "Benchmark range",
Run: rangeFunc,
}
var (
rangeRate int
rangeTotal int
rangeConsistency string
)
func init() {
RootCmd.AddCommand(rangeCmd)
rangeCmd.Flags().IntVar(&rangeRate, "rate", 0, "Maximum range requests per second (0 is no limit)")
rangeCmd.Flags().IntVar(&rangeTotal, "total", 10000, "Total number of range requests")
rangeCmd.Flags().StringVar(&rangeConsistency, "consistency", "l", "Linearizable(l) or Serializable(s)")
}
func rangeFunc(cmd *cobra.Command, args []string) {
if len(args) == 0 || len(args) > 2 {
fmt.Fprintln(os.Stderr, cmd.Usage())
os.Exit(1)
}
k := args[0]
end := ""
if len(args) == 2 {
end = args[1]
}
if rangeConsistency == "l" {
fmt.Println("bench with linearizable range")
} else if rangeConsistency == "s" {
fmt.Println("bench with serializable range")
} else {
fmt.Fprintln(os.Stderr, cmd.Usage())
os.Exit(1)
}
if rangeRate == 0 {
rangeRate = math.MaxInt32
}
limit := rate.NewLimiter(rate.Limit(rangeRate), 1)
requests := make(chan v3.Op, totalClients)
clients := mustCreateClients(totalClients, totalConns)
bar = pb.New(rangeTotal)
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 < rangeTotal; i++ {
opts := []v3.OpOption{v3.WithRange(end)}
if rangeConsistency == "s" {
opts = append(opts, v3.WithSerializable())
}
op := v3.OpGet(k, opts...)
requests <- op
}
close(requests)
}()
rc := r.Run()
wg.Wait()
close(r.Results())
bar.Finish()
fmt.Printf("%s", <-rc)
}
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