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go-zero/core/discov/clients.go

42 lines
703 B
Go

package discov
import (
"fmt"
"strings"
"github.com/zeromicro/go-zero/core/discov/internal"
)
const (
_ = iota
indexOfId
)
const timeToLive int64 = 10
// TimeToLive is seconds to live in etcd.
var TimeToLive = timeToLive
func extract(etcdKey string, index int) (string, bool) {
if index < 0 {
return "", false
}
fields := strings.FieldsFunc(etcdKey, func(ch rune) bool {
return ch == internal.Delimiter
})
if index >= len(fields) {
return "", false
}
return fields[index], true
}
func extractId(etcdKey string) (string, bool) {
return extract(etcdKey, indexOfId)
}
func makeEtcdKey(key string, id int64) string {
return fmt.Sprintf("%s%c%d", key, internal.Delimiter, id)
}