drop sqlite

src/boxes/box-db.go

@@ -1,86 +1,38 @@
 package boxes
 
 import (
-	"database/sql"
-
-	"github.com/labstack/gommon/log"
-
-	_ "modernc.org/sqlite" // Import the SQLite driver
+	"fmt"
+	"math/rand"
+	"time"
 )
 
-func initDb() *sql.DB {
+var (
+	random = rand.New(rand.NewSource(time.Now().UnixNano()))
+	store  = initStore()
+)
 
-	db, err := sql.Open("sqlite", "./data/data.db?_pragma=journal_mode(WAL)&_pragma=synchronous(NORMAL)&_pragma=foreign_keys(ON)")
-	if err != nil {
-		log.Fatal(err)
+func initStore() []Box {
+	store := make([]Box, 1024)
+	for i := 0; i < 1024; i++ {
+		state := random.Intn(2) == 1
+		fmt.Println(Box{i, state})
+		store[i] = Box{i, state}
 	}
 
-	// Create a table
-	sqlStmt := `CREATE TABLE IF NOT EXISTS boxes (id INTEGER PRIMARY KEY, value BOOLEAN);`
+	return store
 
-	_, err = db.Exec(sqlStmt)
-	if err != nil {
-		log.Fatalf("%q: %s\n", err, sqlStmt)
-	}
-
-	return db
 }
 
 func GetBoxes() []Box {
-	rows, err := db.Query("SELECT id, value FROM boxes")
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	boxes := make([]Box, 1024)
-	for i := 0; i < 1024; i++ {
-		boxes[i] = Box{i, false}
-	}
-	for rows.Next() {
-		var id int
-		var value bool
-		err = rows.Scan(&id, &value)
-		if err != nil {
-			log.Fatal(err)
-		}
-		boxes[id].Value = value
-	}
-	defer rows.Close()
-
-	return boxes
+	return store
 }
 
 func (box Box) persist() {
-
-	stmt, err := db.Prepare("INSERT OR REPLACE INTO boxes(id, value) VALUES(?, ?)")
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	_, err = stmt.Exec(box.Id, box.Value)
-	if err != nil {
-		log.Fatal(err)
-	}
-	stmt.Close()
-
+	store[box.Id] = box
 }
 
-func getBox(id int) (Box, error) {
-	var value bool
+func getBox(id int) Box {
+	box := store[id]
 
-	stmt, err := db.Prepare("SELECT value FROM boxes WHERE id = ?")
-	if err != nil {
-		return Box{}, err
-	}
-	defer stmt.Close()
-
-	err = stmt.QueryRow(id).Scan(&value)
-	if err != nil {
-		if err == sql.ErrNoRows {
-			return Box{}, nil
-		}
-		return Box{}, err
-	}
-
-	return Box{id, value}, nil
+	return box
 }

src/boxes/boxes.go

@@ -2,11 +2,9 @@ package boxes
 
 import (
 	"fmt"
-	"math/rand"
 	"strconv"
 	"strings"
 	"sync"
-	"time"
 
 	"github.com/labstack/echo/v4"
 	"github.com/labstack/gommon/log"
@@ -16,8 +14,6 @@ import (
 var (
 	wsConnections = make(map[*websocket.Conn]bool)
 	wsMutex       sync.Mutex
-	db            = initDb()
-	random        = rand.New(rand.NewSource(time.Now().UnixNano()))
 )
 
 type Box struct {
@@ -69,10 +65,7 @@ func randomizeBoxes(count int) []Box {
 	boxes := make([]Box, count)
 	for i := 0; i < count; i++ {
 		index := random.Int() % 1000
-		box, err := getBox(index)
-		if err != nil {
-			log.Fatal(err)
-		}
+		box := getBox(index)
 		box.Value = !box.Value
 		box.persist()
 		boxes[i] = box

src/main.go

@@ -54,6 +54,8 @@ func main() {
 	e.Static("/css", "css")
 	e.Static("/js", "js")
 
+	e.Logger.Info(boxes.GetBoxes())
+
 	e.GET("/", func(c echo.Context) error {
 		return c.Render(200, "index", newPage(boxes.GetBoxes()))
 	})