panic: interface conversion #80

artemklevtsov · 2023-01-08T11:55:49Z

I got panic when try to get cache value with multiple runs.

panic: interface conversion: interface {} is []interface {}, not main.Users

Code to reproduce. Try this code 2 times.

package main

import (
	"fmt"
	"os"
	"path/filepath"
	"time"

	"github.com/gookit/cache"
)

type User struct {
	Name string
}

type Users []*User

const key = "user1"

func main() {
	if cache.Has(key) {
		u, ok := cache.Get("user1").(Users)
		if !ok {
			panic("can not assert cache data")
		}
		fmt.Printf("%#v\n", u[0])
	}
	u := Users{&User{Name: "TestUser"}}
	cache.Set(key, u, 1*time.Hour)
	if cache.Has(key) {
		fmt.Println("cache written")
		u2, ok := cache.Get("user1").(Users)
		if !ok || u[0] != u2[0] {
			fmt.Println("cache data is not OK")
		} else {
			fmt.Println("cache is ok")
		}
	}
}

func init() {
	cache.Register(cache.DvrFile, cache.NewFileCache(filepath.Join(os.TempDir(), "tcache-dir")))
}

First time:

cache written
cache is ok

Second time:

panic: can not assert cache data

goroutine 1 [running]:
main.main()
        /run/media/unikum/UNIKUM-STORAGE/private/prog/go/tcache/main.go:24 +0x28a
exit status 2

inhere self-assigned this Jan 8, 2023

inhere added the bug Something isn't working label Jan 8, 2023

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panic: interface conversion #80

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panic: interface conversion #80

panic: interface conversion #80

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