Index out of bound

[kzmnbrs]

Hello there and thank you for your work.

I faced a bunch of index out of bound exceptions using jsonvector.

panic: runtime error: index out of range [3520] with length 3481

goroutine 1 [running]:
github.com/koykov/vector.(*Node).Each(0xc0002e0438, 0x7580f8)
	/Users/senpai/go/pkg/mod/github.com/koykov/vector@v1.2.6/node.go:239 +0xee
main.main()
	/Users/senpai/dev/personal/ton_watch/main.go:62 +0x487
panic: runtime error: index out of range [3520] with length 3481

goroutine 1 [running]:
github.com/koykov/vector.(*Node).Each(0xc0002e0438, 0x7580f8)
	/Users/senpai/go/pkg/mod/github.com/koykov/vector@v1.2.6/node.go:239 +0xee
main.main()
	/Users/senpai/dev/personal/ton_watch/main.go:62 +0x487

I did not manage to reproduce it on static data, but it's quite easy from the following code sample:

package main

import (
	"context"
	"flag"
	"fmt"
	"log/slog"
	"math"
	"os/signal"
	"syscall"
	"time"

	"github.com/koykov/jsonvector"
	"github.com/koykov/vector"
	"github.com/valyala/fasthttp"
)

const (
	marketCapApiLatest = "https://pro-api.coinmarketcap.com/v1/cryptocurrency/listings/latest"
	tickInterval       = time.Minute * 5
)

var pivotPrice = flag.Float64("p", 8, "pivot price")

func main() {
	flag.Parse()

	sigint, _ := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)

	ticker := time.NewTicker(tickInterval)
	defer ticker.Stop()

	var (
		recv fasthttp.Request
		resp fasthttp.Response
		vec  jsonvector.Vector
	)

	recv.SetRequestURI(marketCapApiLatest)
	recv.Header.SetMethod(fasthttp.MethodGet)
	recv.Header.Set("Accepts", "application/json")
	recv.Header.Set("X-CMC_PRO_API_KEY", marketCapApiKey)

	for {
		resp.Reset()
		if err := fasthttp.Do(&recv, &resp); err != nil {
			slog.Warn("network", "error", err)
			continue
		}

		body := resp.Body()

		vec.Reset()

		if err := vec.Parse(body); err != nil {
			slog.Warn("parse", "error", err)
			continue
		}

		vec.DotArray("data").Each(func(i int, node *vector.Node) {
			if node.DotString("symbol") != "TON" {
				return
			}

			price, err := node.DotFloat("quote.USD.price")
			if err != nil {
				slog.Warn("get price", "error", err)
				return
			}

			if devp := math.Abs(1 - price / *pivotPrice) * 100; devp >= 10 {
				slog.Info("price change", "devp", devp)
				switch {
				case price > *pivotPrice:
					// 
				case price < *pivotPrice:
					//
				}
				if err != nil {
					slog.Warn("send alert", "error", err)
					return
				}
			}
		})

		select {
		case <-sigint.Done():
			return
		case <-ticker.C:
		}
	}
}

Don't suppose you could look into it? A free token from coinmarketcap might be required. Thank you in advance