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[#13] Allow to use english text in the payload

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Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
This commit is contained in:
Evgenii Stratonikov 2023-02-28 14:12:12 +03:00
parent c56bbf04d5
commit 025facee96
9 changed files with 58 additions and 23 deletions
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1
go.mod
View file

@ -11,6 +11,7 @@ require (
github.com/aws/aws-sdk-go-v2/config v1.15.5
github.com/aws/aws-sdk-go-v2/service/s3 v1.26.9
github.com/dop251/goja v0.0.0-20230427124612-428fc442ff5f
github.com/go-loremipsum/loremipsum v1.1.3
github.com/google/uuid v1.3.0
github.com/joho/godotenv v1.5.1
github.com/nspcc-dev/neo-go v0.101.1

2
go.sum
View file

@ -161,6 +161,8 @@ github.com/go-logr/logr v1.2.4 h1:g01GSCwiDw2xSZfjJ2/T9M+S6pFdcNtFYsp+Y43HYDQ=
github.com/go-logr/logr v1.2.4/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
github.com/go-loremipsum/loremipsum v1.1.3 h1:ZRhA0ZmJ49lGe5HhWeMONr+iGftWDsHfrYBl5ktDXso=
github.com/go-loremipsum/loremipsum v1.1.3/go.mod h1:OJQjXdvwlG9hsyhmMQoT4HOm4DG4l62CYywebw0XBoo=
github.com/go-sourcemap/sourcemap v2.1.3+incompatible/go.mod h1:F8jJfvm2KbVjc5NqelyYJmf/v5J0dwNLS2mL4sNA1Jg=
github.com/go-sourcemap/sourcemap v2.1.4-0.20211119122758-180fcef48034+incompatible h1:bopx7t9jyUNX1ebhr0G4gtQWmUOgwQRI0QsYhdYLgkU=
github.com/go-sourcemap/sourcemap v2.1.4-0.20211119122758-180fcef48034+incompatible/go.mod h1:F8jJfvm2KbVjc5NqelyYJmf/v5J0dwNLS2mL4sNA1Jg=

6
internal/datagen/datagen.go
View file

@ -1,6 +1,8 @@
package datagen
import (
"strings"
"go.k6.io/k6/js/modules"
)
@ -36,7 +38,7 @@ func (d *Datagen) Exports() modules.Exports {
return modules.Exports{Default: d}
}
func (d *Datagen) Generator(size int) *Generator {
g := NewGenerator(d.vu, size)
func (d *Datagen) Generator(size int, typ string) *Generator {
g := NewGenerator(d.vu, size, strings.ToLower(typ))
return &g
}

55
internal/datagen/generator.go
View file

@ -1,12 +1,13 @@
package datagen
import (
"bytes"
"crypto/sha256"
"encoding/hex"
"math/rand"
"time"
"github.com/dop251/goja"
"github.com/go-loremipsum/loremipsum"
"go.k6.io/k6/js/modules"
)
@ -24,6 +25,7 @@ type (
size int
rand *rand.Rand
buf []byte
typ string
offset int
}
@ -36,21 +38,28 @@ type (
// TailSize specifies number of extra random bytes in the buffer tail.
const TailSize = 1024
func NewGenerator(vu modules.VU, size int) Generator {
var payloadTypes = []string{
"text",
"random",
"",
}
func NewGenerator(vu modules.VU, size int, typ string) Generator {
if size <= 0 {
panic("size should be positive")
}
r := rand.New(rand.NewSource(time.Now().UnixNano()))
buf := make([]byte, size+TailSize)
r.Read(buf)
return Generator{
vu: vu,
size: size,
rand: r,
buf: buf,
var found bool
for i := range payloadTypes {
if payloadTypes[i] == typ {
found = true
}
}
if !found {
vu.InitEnv().Logger.Info("Unknown payload type '%s', random will be used.", typ)
}
return Generator{vu: vu, size: size, buf: nil, typ: typ, offset: 0}
}
func (g *Generator) GenPayload(calcHash bool) GenPayloadResponse {
data := g.nextSlice()
@ -66,9 +75,24 @@ func (g *Generator) GenPayload(calcHash bool) GenPayloadResponse {
}
func (g *Generator) nextSlice() []byte {
if g.offset >= TailSize {
g.offset = 0
g.rand.Read(g.buf) // Per docs, err is always nil here
if g.buf == nil {
// Allocate buffer with extra tail for sliding and populate it with random bytes
g.buf = make([]byte, g.size+TailSize)
rand.Read(g.buf) // Per docs, err is always nil here
switch g.typ {
case "text":
li := loremipsum.New()
b := bytes.NewBuffer(nil)
for b.Len() < g.size+TailSize {
b.WriteString(li.Paragraph())
b.WriteRune('\n')
}
g.buf = b.Bytes()
default:
// Allocate buffer with extra tail for sliding and populate it with random bytes
g.buf = make([]byte, g.size+TailSize)
rand.Read(g.buf) // Per docs, err is always nil here
}
}
result := g.buf[g.offset : g.offset+g.size]
@ -76,5 +100,10 @@ func (g *Generator) nextSlice() []byte {
// Shift the offset for the next call. If we've used our entire tail, then erase
// the buffer so that on the next call it is regenerated anew
g.offset += 1
if g.offset+g.size >= len(g.buf) {
g.buf = nil
g.offset = 0
}
return result
}

10
internal/datagen/generator_test.go
View file

@ -16,25 +16,25 @@ func TestGenerator(t *testing.T) {
t.Run("fails on negative size", func(t *testing.T) {
require.Panics(t, func() {
_ = NewGenerator(vu, -1)
_ = NewGenerator(vu, -1, "")
})
})
t.Run("fails on zero size", func(t *testing.T) {
require.Panics(t, func() {
_ = NewGenerator(vu, 0)
_ = NewGenerator(vu, 0, "")
})
})
t.Run("creates slice of specified size", func(t *testing.T) {
size := 10
g := NewGenerator(vu, size)
g := NewGenerator(vu, size, "")
slice := g.nextSlice()
require.Len(t, slice, size)
})
t.Run("creates a different slice on each call", func(t *testing.T) {
g := NewGenerator(vu, 1000)
g := NewGenerator(vu, 1000, "")
slice1 := g.nextSlice()
slice2 := g.nextSlice()
// Each slice should be unique (assuming that 1000 random bytes will never coincide
@ -43,7 +43,7 @@ func TestGenerator(t *testing.T) {
})
t.Run("keeps generating slices after consuming entire tail", func(t *testing.T) {
g := NewGenerator(vu, 1000)
g := NewGenerator(vu, 1000, "")
initialSlice := g.nextSlice()
for i := 0; i < TailSize; i++ {
g.nextSlice()

2
scenarios/grpc.js
View file

@ -47,7 +47,7 @@ if (registry_enabled && delete_age) {
}
const generator = datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE));
const generator = datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE), __ENV.PAYLOAD_TYPE || "");
const scenarios = {};

2
scenarios/http.js
View file

@ -31,7 +31,7 @@ const obj_registry = registry_enabled ? registry.open(__ENV.REGISTRY_FILE) : und
const duration = __ENV.DURATION;
const generator = datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE));
const generator = datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE), __ENV.PAYLOAD_TYPE || "");
const scenarios = {};

1
scenarios/run_scenarios.md
View file

@ -18,6 +18,7 @@ Scenarios `grpc.js`, `local.js`, `http.js` and `s3.js` support the following opt
* `SLEEP_WRITE` - time interval (in seconds) between writing VU iterations.
* `SLEEP_READ` - time interval (in seconds) between reading VU iterations.
* `SELECTION_SIZE` - size of batch to select for deletion (default: 1000).
* `PAYLOAD_TYPE` - type of an object payload ("random" or "text", default: "random").
Additionally, the profiling extension can be enabled to generate CPU and memory profiles which can be inspected with `go tool pprof file.prof`:
```shell

2
scenarios/s3.js
View file

@ -46,7 +46,7 @@ if (registry_enabled && delete_age) {
);
}
const generator = datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE));
const generator = datagen.generator(1024 * parseInt(__ENV.WRITE_OBJ_SIZE), __ENV.PAYLOAD_TYPE || "");
const scenarios = {};