Add sync => go-sync

sync/data/redis/redis.go

@@ -0,0 +1,82 @@
+package redis
+
+import (
+	"github.com/micro/go-micro/sync/data"
+	redis "gopkg.in/redis.v3"
+)
+
+type rkv struct {
+	Client *redis.Client
+}
+
+func (r *rkv) Read(key string) (*data.Record, error) {
+	val, err := r.Client.Get(key).Bytes()
+
+	if err != nil && err == redis.Nil {
+		return nil, data.ErrNotFound
+	} else if err != nil {
+		return nil, err
+	}
+
+	if val == nil {
+		return nil, data.ErrNotFound
+	}
+
+	d, err := r.Client.TTL(key).Result()
+	if err != nil {
+		return nil, err
+	}
+
+	return &data.Record{
+		Key:        key,
+		Value:      val,
+		Expiration: d,
+	}, nil
+}
+
+func (r *rkv) Delete(key string) error {
+	return r.Client.Del(key).Err()
+}
+
+func (r *rkv) Write(record *data.Record) error {
+	return r.Client.Set(record.Key, record.Value, record.Expiration).Err()
+}
+
+func (r *rkv) Dump() ([]*data.Record, error) {
+	keys, err := r.Client.Keys("*").Result()
+	if err != nil {
+		return nil, err
+	}
+	var vals []*data.Record
+	for _, k := range keys {
+		i, err := r.Read(k)
+		if err != nil {
+			return nil, err
+		}
+		vals = append(vals, i)
+	}
+	return vals, nil
+}
+
+func (r *rkv) String() string {
+	return "redis"
+}
+
+func NewData(opts ...data.Option) data.Data {
+	var options data.Options
+	for _, o := range opts {
+		o(&options)
+	}
+
+	if len(options.Nodes) == 0 {
+		options.Nodes = []string{"127.0.0.1:6379"}
+	}
+
+	return &rkv{
+		Client: redis.NewClient(&redis.Options{
+			Addr:     options.Nodes[0],
+			Password: "", // no password set
+			DB:       0,  // use default DB
+		}),
+	}
+}