94 lines
1.7 KiB
Go
94 lines
1.7 KiB
Go
// Package etcd is an etcd v3 implementation of kv
|
|
package etcd
|
|
|
|
import (
|
|
"context"
|
|
"log"
|
|
|
|
"github.com/micro/go-micro/sync/data"
|
|
client "go.etcd.io/etcd/clientv3"
|
|
)
|
|
|
|
type ekv struct {
|
|
kv client.KV
|
|
}
|
|
|
|
func (e *ekv) Read(key string) (*data.Record, error) {
|
|
keyval, err := e.kv.Get(context.Background(), key)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if keyval == nil || len(keyval.Kvs) == 0 {
|
|
return nil, data.ErrNotFound
|
|
}
|
|
|
|
return &data.Record{
|
|
Key: string(keyval.Kvs[0].Key),
|
|
Value: keyval.Kvs[0].Value,
|
|
}, nil
|
|
}
|
|
|
|
func (e *ekv) Delete(key string) error {
|
|
_, err := e.kv.Delete(context.Background(), key)
|
|
return err
|
|
}
|
|
|
|
func (e *ekv) Write(record *data.Record) error {
|
|
_, err := e.kv.Put(context.Background(), record.Key, string(record.Value))
|
|
return err
|
|
}
|
|
|
|
func (e *ekv) Dump() ([]*data.Record, error) {
|
|
keyval, err := e.kv.Get(context.Background(), "/", client.WithPrefix())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var vals []*data.Record
|
|
if keyval == nil || len(keyval.Kvs) == 0 {
|
|
return vals, nil
|
|
}
|
|
for _, keyv := range keyval.Kvs {
|
|
vals = append(vals, &data.Record{
|
|
Key: string(keyv.Key),
|
|
Value: keyv.Value,
|
|
})
|
|
}
|
|
return vals, nil
|
|
}
|
|
|
|
func (e *ekv) String() string {
|
|
return "etcd"
|
|
}
|
|
|
|
func NewData(opts ...data.Option) data.Data {
|
|
var options data.Options
|
|
for _, o := range opts {
|
|
o(&options)
|
|
}
|
|
|
|
var endpoints []string
|
|
|
|
for _, addr := range options.Nodes {
|
|
if len(addr) > 0 {
|
|
endpoints = append(endpoints, addr)
|
|
}
|
|
}
|
|
|
|
if len(endpoints) == 0 {
|
|
endpoints = []string{"http://127.0.0.1:2379"}
|
|
}
|
|
|
|
// TODO: parse addresses
|
|
c, err := client.New(client.Config{
|
|
Endpoints: endpoints,
|
|
})
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
return &ekv{
|
|
kv: client.NewKV(c),
|
|
}
|
|
}
|