Go Language dns seeder for Bitcoin based networks
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//
package main
import (
"fmt"
"github.com/btcsuite/goleveldb/leveldb"
"github.com/btcsuite/goleveldb/leveldb/opt"
)
type tst struct {
key int
value string
}
var dataset = []tst{
//var dataset = []struct { key int, value string } {
{1, "one"},
{2, "two"},
{3, "three"},
{4, "four"},
{5, "five"},
}
func main() {
ro := &opt.ReadOptions{}
wo := &opt.WriteOptions{}
opts := &opt.Options{}
ldb, err := leveldb.OpenFile("dbfile", opts)
if err != nil {
fmt.Printf("db open failed %v\n", err)
return
}
batch := new(leveldb.Batch)
for _, datum := range dataset {
key := fmt.Sprintf("%v", datum.key)
batch.Put([]byte(key), []byte(datum.value))
}
err = ldb.Write(batch, wo)
for _, datum := range dataset {
key := fmt.Sprintf("%v", datum.key)
data, err := ldb.Get([]byte(key), ro)
if err != nil {
fmt.Printf("db read failed %v\n", err)
}
if string(data) != datum.value {
fmt.Printf("mismatched data from db key %v val %v db %v", key, datum.value, data)
}
}
fmt.Printf("completed\n")
ldb.Close()
}