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// This is a very basic example of a program that implements rdb.decoder and
// outputs a human readable diffable dump of the rdb file.
package main
import (
"fmt"
"os"
"github.com/cupcake/rdb"
"github.com/cupcake/rdb/nopdecoder"
)
type decoder struct {
db int
i int
nopdecoder.NopDecoder
}
func (p *decoder) StartDatabase(n int) {
p.db = n
}
func (p *decoder) Set(key, value []byte, expiry int64) {
fmt.Printf("db=%d %q -> %q\n", p.db, key, value)
}
func (p *decoder) Hset(key, field, value []byte) {
fmt.Printf("db=%d %q . %q -> %q\n", p.db, key, field, value)
}
func (p *decoder) Sadd(key, member []byte) {
fmt.Printf("db=%d %q { %q }\n", p.db, key, member)
}
func (p *decoder) StartList(key []byte, length, expiry int64) {
p.i = 0
}
func (p *decoder) Rpush(key, value []byte) {
fmt.Printf("db=%d %q[%d] -> %q\n", p.db, key, p.i, value)
p.i++
}
func (p *decoder) StartZSet(key []byte, cardinality, expiry int64) {
p.i = 0
}
func (p *decoder) Zadd(key []byte, score float64, member []byte) {
fmt.Printf("db=%d %q[%d] -> {%q, score=%g}\n", p.db, key, p.i, member, score)
p.i++
}
func maybeFatal(err error) {
if err != nil {
fmt.Printf("Fatal error: %s\n", err)
os.Exit(1)
}
}
func main() {
f, err := os.Open(os.Args[1])
maybeFatal(err)
err = rdb.Decode(f, &decoder{})
maybeFatal(err)
}
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