v2

seed.go

@@ -0,0 +1,68 @@
+//go:build ignore
+
+package main
+
+import (
+	"fmt"
+	"math/rand/v2"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		panic("usage: go run seed.go <count>")
+	}
+
+	n, _ := strconv.Atoi(os.Args[1])
+	store, err := NewStore("history.db")
+	if err != nil {
+		panic(err)
+	}
+
+	store.db.Exec("PRAGMA synchronous = OFF")
+	store.db.Exec("PRAGMA journal_mode = MEMORY")
+
+	tx, _ := store.db.Begin()
+
+	batchSize := 1000
+	q := strings.Builder{}
+	vals := make([]any, 0, batchSize*2)
+	baseTime := time.Now().UTC()
+
+	fmt.Printf("generating %d rows...\n", n)
+
+	for i := 0; i < n; i++ {
+		ip := strconv.Itoa(rand.IntN(254)+1) + "." +
+			strconv.Itoa(rand.IntN(255)) + "." +
+			strconv.Itoa(rand.IntN(255)) + "." +
+			strconv.Itoa(rand.IntN(255))
+
+		ts := baseTime.Add(time.Duration(-i) * time.Hour)
+
+		if len(vals) == 0 {
+			q.WriteString("INSERT INTO ip_history (ip, ts) VALUES ")
+		} else {
+			q.WriteString(",")
+		}
+		q.WriteString("(?,?)")
+		vals = append(vals, ip, ts)
+
+		if len(vals) >= batchSize*2 {
+			if _, err := tx.Exec(q.String(), vals...); err != nil {
+				panic(err)
+			}
+			q.Reset()
+			vals = vals[:0]
+		}
+	}
+
+	if len(vals) > 0 {
+		tx.Exec(q.String(), vals...)
+	}
+
+	tx.Commit()
+	fmt.Println("done")
+}