func (self *BitcaskStore) migrate(host string, left, right uint32) {
keyChan := self.bc.Keys()
target := protocol.NewHost(host)
for key := range keyChan {
v := crc32hash([]byte(key))
if (left < right && v >= left && v < right) ||
(left > right && !(v >= left && v < right)) {
v, e := self.bc.Get(key)
if e == nil {
target.Set(key, &protocol.Item{Body: v}, false)
}
}
}
}
func (self *BitcaskStore) Set(key string, item *protocol.Item, noreply bool) (bool, error) {
if len(key) > 3 && strings.Contains(key, "@#$") {
pos := strings.Index(key, "@#$")
target := protocol.NewHost(key[pos+3:])
key = key[:pos]
self.chF <- func() {
for {
if ok, _ := target.Set(key, item, noreply); ok {
break
}
}
}
}
e := self.bc.Set(key, item.Body)
if e != nil {
return false, e
}
return true, nil
}