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client.go
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client.go
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// Copyright 2015 The Vanadium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package internal
import (
"bytes"
"fmt"
"math/rand"
"time"
"v.io/v23/context"
"v.io/v23/vtrace"
"v.io/x/ref/runtime/internal/rpc/stress"
)
// CallEcho calls 'Echo' method with the given payload size for the given time
// duration and returns the number of iterations.
func CallEcho(octx *context.T, server string, payloadSize int, duration time.Duration) uint64 {
stub := stress.StressClient(server)
payload := make([]byte, payloadSize)
for i := range payload {
payload[i] = byte(i & 0xff)
}
var iterations uint64
start := time.Now()
for {
ctx, _ := vtrace.WithNewTrace(octx)
got, err := stub.Echo(ctx, payload)
if err != nil {
ctx.Fatalf("Echo failed: %v", err)
}
if !bytes.Equal(got, payload) {
ctx.Fatalf("Echo returned %v, but expected %v", got, payload)
}
iterations++
if time.Since(start) >= duration {
break
}
}
return iterations
}
// CallSum calls 'Sum' method with a randomly generated payload.
func CallSum(ctx *context.T, server string, maxPayloadSize int, stats *stress.SumStats) {
stub := stress.StressClient(server)
arg, err := newSumArg(maxPayloadSize)
if err != nil {
ctx.Fatalf("new arg failed: %v", err)
}
got, err := stub.Sum(ctx, arg)
if err != nil {
ctx.Fatalf("Sum failed: %v", err)
}
wanted, _ := doSum(&arg)
if !bytes.Equal(got, wanted) {
ctx.Fatalf("Sum returned %v, but expected %v", got, wanted)
}
stats.SumCount++
stats.BytesSent += uint64(lenSumArg(&arg))
stats.BytesRecv += uint64(len(got))
}
// CallSumStream calls 'SumStream' method. Each iteration sends up to
// 'maxChunkCnt' chunks on the stream and receives the same number of
// sums back.
func CallSumStream(ctx *context.T, server string, maxChunkCnt, maxPayloadSize int, stats *stress.SumStats) {
stub := stress.StressClient(server)
stream, err := stub.SumStream(ctx)
if err != nil {
ctx.Fatalf("Stream failed: %v", err)
}
chunkCnt := rand.Intn(maxChunkCnt) + 1
args := make([]stress.SumArg, chunkCnt)
done := make(chan error, 1)
go func() {
defer close(done)
recvS := stream.RecvStream()
i := 0
for ; recvS.Advance(); i++ {
got := recvS.Value()
wanted, _ := doSum(&args[i])
if !bytes.Equal(got, wanted) {
err := fmt.Errorf("RecvStream returned %v, but expected %v", got, wanted)
ctx.Errorf("Recv error: %v", err)
done <- err
return
}
stats.BytesRecv += uint64(len(got))
}
switch err := recvS.Err(); {
case err != nil:
ctx.Errorf("Recv error: %v", err)
done <- err
case i != chunkCnt:
err := fmt.Errorf("RecvStream returned %d chunks, but expected %d", i, chunkCnt)
ctx.Errorf("Recv error: %v", err)
done <- err
default:
done <- nil
}
}()
sendS := stream.SendStream()
for i := 0; i < chunkCnt; i++ {
arg, err := newSumArg(maxPayloadSize)
if err != nil {
ctx.Fatalf("new arg failed: %v", err)
}
args[i] = arg
if err = sendS.Send(arg); err != nil {
ctx.Fatalf("SendStream failed to send: %v", err)
}
stats.BytesSent += uint64(lenSumArg(&arg))
}
if err = sendS.Close(); err != nil {
ctx.Fatalf("SendStream failed to close: %v", err)
}
if err = <-done; err != nil {
ctx.Fatalf("%v", err)
}
if err = stream.Finish(); err != nil {
ctx.Fatalf("Stream failed to finish: %v", err)
}
stats.SumStreamCount++
}