|
|
|
/*
|
|
|
|
* Minio Cloud Storage, (C) 2016 Minio, Inc.
|
|
|
|
*
|
|
|
|
* 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 (
|
|
|
|
"bytes"
|
|
|
|
"crypto/md5"
|
|
|
|
"encoding/hex"
|
|
|
|
"math/rand"
|
|
|
|
"strconv"
|
|
|
|
"testing"
|
|
|
|
"time"
|
|
|
|
)
|
|
|
|
|
|
|
|
// Creates Object layer setup ( MakeBucket, PutObject) and then runs the benchmark.
|
|
|
|
func runGetObjectBenchmark(b *testing.B, obj ObjectLayer, objSize int) {
|
|
|
|
var err error
|
|
|
|
// obtains random bucket name.
|
|
|
|
bucket := getRandomBucketName()
|
|
|
|
// create bucket.
|
|
|
|
err = obj.MakeBucket(bucket)
|
|
|
|
if err != nil {
|
|
|
|
b.Fatal(err)
|
|
|
|
}
|
|
|
|
|
|
|
|
// PutObject returns md5Sum of the object inserted.
|
|
|
|
// md5Sum variable is assigned with that value.
|
|
|
|
var md5Sum string
|
|
|
|
for i := 0; i < 10; i++ {
|
|
|
|
// get text data generated for number of bytes equal to object size.
|
|
|
|
textData := generateBytesData(objSize)
|
|
|
|
// generate md5sum for the generated data.
|
|
|
|
// md5sum of the data to written is required as input for PutObject.
|
|
|
|
// PutObject is the functions which writes the data onto the FS/XL backend.
|
|
|
|
hasher := md5.New()
|
|
|
|
hasher.Write([]byte(textData))
|
|
|
|
metadata := make(map[string]string)
|
|
|
|
metadata["md5Sum"] = hex.EncodeToString(hasher.Sum(nil))
|
|
|
|
// insert the object.
|
|
|
|
md5Sum, err = obj.PutObject(bucket, "object"+strconv.Itoa(i), int64(len(textData)), bytes.NewBuffer(textData), metadata)
|
|
|
|
if err != nil {
|
|
|
|
b.Fatal(err)
|
|
|
|
}
|
|
|
|
if md5Sum != metadata["md5Sum"] {
|
|
|
|
b.Fatalf("Write no: %d: Md5Sum mismatch during object write into the bucket: Expected %s, got %s", i+1, md5Sum, metadata["md5Sum"])
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// benchmark utility which helps obtain number of allocations and bytes allocated per ops.
|
|
|
|
b.ReportAllocs()
|
|
|
|
// the actual benchmark for GetObject starts here. Reset the benchmark timer.
|
|
|
|
b.ResetTimer()
|
|
|
|
for i := 0; i < b.N; i++ {
|
|
|
|
var buffer = new(bytes.Buffer)
|
|
|
|
err = obj.GetObject(bucket, "object"+strconv.Itoa(i%10), 0, int64(objSize), buffer)
|
|
|
|
if err != nil {
|
|
|
|
b.Error(err)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// Benchmark ends here. Stop timer.
|
|
|
|
b.StopTimer()
|
|
|
|
|
|
|
|
}
|
|
|
|
func generateBytesData(size int) []byte {
|
|
|
|
// randomly picks a character and returns its equivalent byte array.
|
|
|
|
getRandomByte := func() []byte {
|
|
|
|
const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
|
|
|
// seeding the random number generator.
|
|
|
|
rand.Seed(time.Now().UnixNano())
|
|
|
|
var b byte
|
|
|
|
// pick a character randomly.
|
|
|
|
b = letterBytes[rand.Intn(len(letterBytes))]
|
|
|
|
return []byte{b}
|
|
|
|
}
|
|
|
|
// repeat the random character chosen size
|
|
|
|
return bytes.Repeat(getRandomByte(), size)
|
|
|
|
}
|
|
|
|
|
|
|
|
// creates XL/FS backend setup, obtains the object layer and calls the runGetObjectBenchmark function.
|
|
|
|
func benchmarkGetObject(b *testing.B, instanceType string, runBenchMark func(b *testing.B, obj ObjectLayer)) {
|
|
|
|
// create a temp XL/FS backend.
|
|
|
|
objLayer, disks, err := makeTestBackend(instanceType)
|
|
|
|
if err != nil {
|
|
|
|
b.Fatalf("Failed obtaining Temp Backend: <ERROR> %s", err)
|
|
|
|
}
|
|
|
|
// cleaning up the backend by removing all the directories and files created.
|
|
|
|
defer removeRoots(disks)
|
|
|
|
// calling runGetObjectBenchmark which uses *testing.B and the object Layer to run the benchmark.
|
|
|
|
runBenchMark(b, objLayer)
|
|
|
|
}
|
|
|
|
|
|
|
|
// closure for returning the get object benchmark executor for given object size in bytes.
|
|
|
|
func returnGetObjectBenchmark(objSize int) func(*testing.B, ObjectLayer) {
|
|
|
|
return func(b *testing.B, obj ObjectLayer) {
|
|
|
|
runGetObjectBenchmark(b, obj, objSize)
|
|
|
|
}
|
|
|
|
}
|