81 lines
1.4 KiB
Go
81 lines
1.4 KiB
Go
package storage
|
|
|
|
import (
|
|
"net"
|
|
|
|
"github.com/bradfitz/gomemcache/memcache"
|
|
)
|
|
|
|
type Memcache struct {
|
|
db *memcache.Client
|
|
}
|
|
|
|
type serverSelector struct {
|
|
addrs []string
|
|
}
|
|
|
|
func (ss *serverSelector) PickServer(key string) (net.Addr, error) {
|
|
return &netAddr{
|
|
network: "tcp",
|
|
addr: ss.addrs[0],
|
|
}, nil
|
|
}
|
|
|
|
func (ss *serverSelector) Each(each func(net.Addr) error) error {
|
|
for _, addr := range ss.addrs {
|
|
if err := each(&netAddr{
|
|
network: "tcp",
|
|
addr: addr,
|
|
}); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
type netAddr struct {
|
|
network string
|
|
addr string
|
|
}
|
|
|
|
func (a *netAddr) Network() string {
|
|
return a.network
|
|
}
|
|
|
|
func (a *netAddr) String() string {
|
|
return a.addr
|
|
}
|
|
|
|
func NewMemcache(addr string, addrs ...string) (*Memcache, error) {
|
|
ss := &serverSelector{
|
|
addrs: append(addrs, addr),
|
|
}
|
|
if err := ss.Each(func(addr net.Addr) error {
|
|
conn, err := net.Dial("tcp", addr.String())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return conn.Close()
|
|
}); err != nil {
|
|
return nil, err
|
|
}
|
|
db := memcache.NewFromSelector(ss)
|
|
return &Memcache{db: db}, nil
|
|
}
|
|
|
|
func (mc *Memcache) Get(key string) ([]byte, error) {
|
|
v, err := mc.db.Get(key)
|
|
return v.Value, err
|
|
}
|
|
|
|
func (mc *Memcache) Set(key string, value []byte) error {
|
|
return mc.db.Set(&memcache.Item{
|
|
Key: key,
|
|
Value: value,
|
|
})
|
|
}
|
|
|
|
func (mc *Memcache) Close() error {
|
|
return mc.db.FlushAll()
|
|
}
|