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scenario.go
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scenario.go
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//
// Copyright 2019 Insolar Technologies GmbH
//
// 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 main
import (
"context"
"fmt"
"io"
"net"
"strings"
"sync"
"sync/atomic"
"time"
"github.com/insolar/insolar/api/sdk"
"github.com/insolar/insolar/insolar"
"github.com/insolar/insolar/utils/backoff"
"github.com/pkg/errors"
)
type scenario interface {
canBeStarted() error
start(ctx context.Context)
getOperationsNumber() int
getAverageOperationDuration() time.Duration
getOperationPerSecond() float64
getName() string
getOut() io.Writer
printResult()
}
type transferDifferentMembersScenario struct {
name string
concurrent int
repetitions int
out io.Writer
totalTime int64
goroutineTimes []time.Duration
successes uint32
errors uint32
timeouts uint32
members []*sdk.Member
insSDK *sdk.SDK
penRetries int32
}
func (s *transferDifferentMembersScenario) getOperationsNumber() int {
return s.concurrent * s.repetitions
}
func (s *transferDifferentMembersScenario) getAverageOperationDuration() time.Duration {
return time.Duration(s.totalTime / int64(s.getOperationsNumber()))
}
func (s *transferDifferentMembersScenario) getOperationPerSecond() float64 {
if len(s.goroutineTimes) == 0 {
return 0
}
max := s.goroutineTimes[0]
for _, t := range s.goroutineTimes {
if max < t {
max = t
}
}
elapsedInSeconds := float64(max) / float64(time.Second)
return float64(s.getOperationsNumber()-int(s.timeouts)) / elapsedInSeconds
}
func (s *transferDifferentMembersScenario) getName() string {
return s.name
}
func (s *transferDifferentMembersScenario) getOut() io.Writer {
return s.out
}
func (s *transferDifferentMembersScenario) canBeStarted() error {
writeToOutput(s.getOut(), fmt.Sprint("canBeStarted\n"))
if len(s.members) < s.concurrent*2 {
return fmt.Errorf("not enough members for scenario %s", s.getName())
}
return nil
}
func (s *transferDifferentMembersScenario) start(ctx context.Context) {
var wg sync.WaitGroup
for i := 0; i < s.concurrent*2; i = i + 2 {
wg.Add(1)
go s.startMember(ctx, i, &wg)
}
wg.Wait()
}
func (s *transferDifferentMembersScenario) startMember(ctx context.Context, index int, wg *sync.WaitGroup) {
defer wg.Done()
goroutineTime := time.Duration(0)
for j := 0; j < s.repetitions; j = j + 1 {
select {
case <-ctx.Done():
return
default:
}
from := s.members[index]
to := s.members[index+1]
var start time.Time
var stop time.Duration
var traceID string
var err error
bof := backoff.Backoff{Min: 500 * time.Millisecond, Max: 20 * time.Second}
retry := true
for retry && bof.Attempt() < backoffAttemptsCount {
start = time.Now()
traceID, err = s.insSDK.Transfer(1, from, to)
stop = time.Since(start)
if err == nil {
retry = false
} else if strings.Contains(err.Error(), insolar.ErrTooManyPendingRequests.Error()) {
time.Sleep(bof.Duration())
atomic.AddInt32(&s.penRetries, 1)
} else {
retry = false
}
}
if err == nil {
atomic.AddUint32(&s.successes, 1)
atomic.AddInt64(&s.totalTime, int64(stop))
goroutineTime += stop
} else if netErr, ok := errors.Cause(err).(net.Error); ok && netErr.Timeout() {
atomic.AddUint32(&s.timeouts, 1)
writeToOutput(s.out, fmt.Sprintf("[Member №%d] Transfer error with traceID: %s. Timeout.\n", index, traceID))
} else {
atomic.AddUint32(&s.errors, 1)
atomic.AddInt64(&s.totalTime, int64(stop))
goroutineTime += stop
if strings.Contains(err.Error(), "Incorrect message pulse") {
writeToOutput(s.out, fmt.Sprintf("[ OK ] Incorrect message pulse. Trace: %s.\n", traceID))
} else if strings.Contains(err.Error(), "invalid state record") {
writeToOutput(s.out, fmt.Sprintf("[ OK ] Invalid state record. Trace: %s.\n", traceID))
} else {
writeToOutput(s.out, fmt.Sprintf("[Member №%d] Transfer error with traceID: %s. Response: %s.\n", index, traceID, err.Error()))
}
}
}
s.goroutineTimes = append(s.goroutineTimes, goroutineTime)
}
func (s *transferDifferentMembersScenario) printResult() {
writeToOutput(s.out, fmt.Sprintf("Scenario result:\n\tSuccesses: %d\n\tErrors: %d\n\tTimeouts: %d\n\tPending retries: %d\n", s.successes, s.errors, s.timeouts, s.penRetries))
}