forked from TechEmpower/FrameworkBenchmarks
/
hello_mysql.go
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/
hello_mysql.go
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package main
import (
"database/sql"
"encoding/json"
"flag"
"html/template"
"log"
"math/rand"
"net"
"net/http"
"os"
"os/exec"
"runtime"
"sort"
"strconv"
_ "github.com/go-sql-driver/mysql"
)
type Message struct {
Message string `json:"message"`
}
type World struct {
Id uint16 `json:"id"`
RandomNumber uint16 `json:"randomNumber"`
}
type Fortune struct {
Id uint16 `json:"id"`
Message string `json:"message"`
}
const (
// Content
helloWorldString = "Hello, World!"
fortuneHTML = `<!DOCTYPE html>
<html>
<head>
<title>Fortunes</title>
</head>
<body>
<table>
<tr>
<th>id</th>
<th>message</th>
</tr>
{{range .}}
<tr>
<td>{{.Id}}</td>
<td>{{.Message}}</td>
</tr>
{{end}}
</table>
</body>
</html>`
// Databases
//
// `interpolateParams=true` enables client side parameter interpolation.
// It reduces round trips without prepared statement.
//
// We can see difference between prepared statement and interpolation by comparing go-std-mysql and go-std-mysql-interpolate
connectionString = "benchmarkdbuser:benchmarkdbpass@tcp(tfb-database:3306)/hello_world?interpolateParams=true"
worldSelect = "SELECT id, randomNumber FROM World WHERE id = ?"
worldUpdate = "UPDATE World SET randomNumber = ? WHERE id = ?"
fortuneSelect = "SELECT id, message FROM Fortune"
worldRowCount = 10000
maxConnections = 256
)
var (
helloWorldBytes = []byte(helloWorldString)
// Templates
tmpl = template.Must(template.New("fortune.html").Parse(fortuneHTML))
// Database
db *sql.DB
worldSelectPrepared *sql.Stmt
worldUpdatePrepared *sql.Stmt
fortuneSelectPrepared *sql.Stmt
)
var prefork = flag.Bool("prefork", false, "use prefork")
var child = flag.Bool("child", false, "is child proc")
func initDB() {
var err error
db, err = sql.Open("mysql", connectionString)
if err != nil {
log.Fatalf("Error opening database: %v", err)
}
db.SetMaxIdleConns(maxConnections)
db.SetMaxOpenConns(maxConnections)
worldSelectPrepared, err = db.Prepare(worldSelect)
if err != nil {
log.Fatal(err)
}
worldUpdatePrepared, err = db.Prepare(worldUpdate)
if err != nil {
log.Fatal(err)
}
fortuneSelectPrepared, err = db.Prepare(fortuneSelect)
if err != nil {
log.Fatal(err)
}
}
func main() {
var listener net.Listener
flag.Parse()
if !*prefork {
runtime.GOMAXPROCS(runtime.NumCPU())
} else {
listener = doPrefork()
}
initDB()
http.HandleFunc("/json", jsonHandler)
http.HandleFunc("/db", dbHandler)
http.HandleFunc("/dbInterpolate", dbInterpolateHandler)
http.HandleFunc("/queries", queriesHandler)
http.HandleFunc("/queriesInterpolate", queriesInterpolateHandler)
http.HandleFunc("/fortune", fortuneHandler)
http.HandleFunc("/fortuneInterpolate", fortuneInterpolateHandler)
http.HandleFunc("/update", updateHandler)
http.HandleFunc("/updateInterpolate", updateInterpolateHandler)
http.HandleFunc("/plaintext", plaintextHandler)
if !*prefork {
http.ListenAndServe(":8080", nil)
} else {
http.Serve(listener, nil)
}
}
func doPrefork() (listener net.Listener) {
var err error
var fl *os.File
var tcplistener *net.TCPListener
if !*child {
var addr *net.TCPAddr
addr, err = net.ResolveTCPAddr("tcp", ":8080")
if err != nil {
log.Fatal(err)
}
tcplistener, err = net.ListenTCP("tcp", addr)
if err != nil {
log.Fatal(err)
}
fl, err = tcplistener.File()
if err != nil {
log.Fatal(err)
}
children := make([]*exec.Cmd, runtime.NumCPU()/2)
for i := range children {
children[i] = exec.Command(os.Args[0], "-prefork", "-child")
children[i].Stdout = os.Stdout
children[i].Stderr = os.Stderr
children[i].ExtraFiles = []*os.File{fl}
err = children[i].Start()
if err != nil {
log.Fatal(err)
}
}
for _, ch := range children {
var err error = ch.Wait()
if err != nil {
log.Print(err)
}
}
os.Exit(0)
} else {
fl = os.NewFile(3, "")
listener, err = net.FileListener(fl)
if err != nil {
log.Fatal(err)
}
runtime.GOMAXPROCS(2)
}
return listener
}
func getQueriesParam(r *http.Request) int {
n := 1
if nStr := r.URL.Query().Get("queries"); len(nStr) > 0 {
n, _ = strconv.Atoi(nStr)
}
if n < 1 {
n = 1
} else if n > 500 {
n = 500
}
return n
}
// Test 1: JSON serialization
func jsonHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Server", "Go")
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(&Message{helloWorldString})
}
// Test 2: Single database query
func dbHandler(w http.ResponseWriter, r *http.Request) {
var world World
err := worldSelectPrepared.QueryRow(rand.Intn(worldRowCount)+1).Scan(&world.Id, &world.RandomNumber)
if err != nil {
log.Fatalf("Error scanning world row: %s", err.Error())
}
w.Header().Set("Server", "Go")
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(&world)
}
func dbInterpolateHandler(w http.ResponseWriter, r *http.Request) {
var world World
err := db.QueryRow(worldSelect, rand.Intn(worldRowCount)+1).Scan(&world.Id, &world.RandomNumber)
if err != nil {
log.Fatalf("Error scanning world row: %s", err.Error())
}
w.Header().Set("Server", "Go")
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(&world)
}
// Test 3: Multiple database queries
func queriesHandler(w http.ResponseWriter, r *http.Request) {
n := getQueriesParam(r)
world := make([]World, n)
for i := 0; i < n; i++ {
err := worldSelectPrepared.QueryRow(rand.Intn(worldRowCount)+1).Scan(&world[i].Id, &world[i].RandomNumber)
if err != nil {
log.Fatalf("Error scanning world row: %v", err)
}
}
w.Header().Set("Server", "Go")
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(world)
}
func queriesInterpolateHandler(w http.ResponseWriter, r *http.Request) {
n := getQueriesParam(r)
world := make([]World, n)
for i := 0; i < n; i++ {
err := db.QueryRow(worldSelect, rand.Intn(worldRowCount)+1).Scan(&world[i].Id, &world[i].RandomNumber)
if err != nil {
log.Fatalf("Error scanning world row: %v", err)
}
}
w.Header().Set("Server", "Go")
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(world)
}
// Test 4: Fortunes
func fortuneHandler(w http.ResponseWriter, r *http.Request) {
rows, err := fortuneSelectPrepared.Query()
if err != nil {
log.Fatalf("Error preparing statement: %v", err)
}
fortunes := fetchFortunes(rows)
fortunes = append(fortunes, &Fortune{Message: "Additional fortune added at request time."})
sort.Sort(ByMessage{fortunes})
w.Header().Set("Server", "Go")
w.Header().Set("Content-Type", "text/html; charset=utf-8")
if err := tmpl.Execute(w, fortunes); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
}
func fortuneInterpolateHandler(w http.ResponseWriter, r *http.Request) {
rows, err := db.Query(fortuneSelect)
if err != nil {
log.Fatalf("Error preparing statement: %v", err)
}
fortunes := fetchFortunes(rows)
fortunes = append(fortunes, &Fortune{Message: "Additional fortune added at request time."})
sort.Sort(ByMessage{fortunes})
w.Header().Set("Server", "Go")
w.Header().Set("Content-Type", "text/html; charset=utf-8")
if err := tmpl.Execute(w, fortunes); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
}
func fetchFortunes(rows *sql.Rows) Fortunes {
defer rows.Close()
fortunes := make(Fortunes, 0, 16)
for rows.Next() { //Fetch rows
fortune := Fortune{}
if err := rows.Scan(&fortune.Id, &fortune.Message); err != nil {
log.Fatalf("Error scanning fortune row: %s", err.Error())
}
fortunes = append(fortunes, &fortune)
}
return fortunes
}
// Test 5: Database updates
func updateHandler(w http.ResponseWriter, r *http.Request) {
n := getQueriesParam(r)
world := make([]World, n)
for i := 0; i < n; i++ {
if err := worldSelectPrepared.QueryRow(rand.Intn(worldRowCount)+1).Scan(&world[i].Id, &world[i].RandomNumber); err != nil {
log.Fatalf("Error scanning world row: %v", err)
}
world[i].RandomNumber = uint16(rand.Intn(worldRowCount) + 1)
if _, err := worldUpdatePrepared.Exec(world[i].RandomNumber, world[i].Id); err != nil {
log.Fatalf("Error updating world row: %v", err)
}
}
w.Header().Set("Server", "Go")
w.Header().Set("Content-Type", "application/json")
encoder := json.NewEncoder(w)
encoder.Encode(world)
}
func updateInterpolateHandler(w http.ResponseWriter, r *http.Request) {
n := getQueriesParam(r)
world := make([]World, n)
for i := 0; i < n; i++ {
if err := db.QueryRow(worldSelect, rand.Intn(worldRowCount)+1).Scan(&world[i].Id, &world[i].RandomNumber); err != nil {
log.Fatalf("Error scanning world row: %v", err)
}
world[i].RandomNumber = uint16(rand.Intn(worldRowCount) + 1)
if _, err := db.Exec(worldUpdate, world[i].RandomNumber, world[i].Id); err != nil {
log.Fatalf("Error updating world row: %v", err)
}
}
w.Header().Set("Server", "Go")
w.Header().Set("Content-Type", "application/json")
encoder := json.NewEncoder(w)
encoder.Encode(world)
}
// Test 6: Plaintext
func plaintextHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Server", "Go")
w.Header().Set("Content-Type", "text/plain")
w.Write(helloWorldBytes)
}
type Fortunes []*Fortune
func (s Fortunes) Len() int { return len(s) }
func (s Fortunes) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
type ByMessage struct{ Fortunes }
func (s ByMessage) Less(i, j int) bool { return s.Fortunes[i].Message < s.Fortunes[j].Message }