implement Save

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

consul.go

@@ -127,6 +127,15 @@ func (c *consulConfig) Save(ctx context.Context) error {
 		}
 	}
 
+	buf, err := c.opts.Codec.Marshal(c.opts.Struct)
+	if err == nil {
+		_, err = c.cli.KV().Put(&api.KVPair{Key: c.path, Value: buf}, nil)
+	}
+
+	if err != nil && !c.opts.AllowFail {
+		return fmt.Errorf("consul path save error: %v", err)
+	}
+
 	for _, fn := range c.opts.AfterSave {
 		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
 			return err

options.go

@@ -1,6 +1,8 @@
 package consul
 
 import (
+	"time"
+
 	"github.com/hashicorp/consul/api"
 	"github.com/unistack-org/micro/v3/config"
 )
@@ -36,3 +38,9 @@ func TLSConfig(t *tls.Config) config.Option {
 	return config.SetOption(tlsConfigKey{}, t)
 }
 */
+
+type timeoutKey struct{}
+
+func Timeout(td time.Duration) config.Option {
+	return config.SetOption(timeoutKey{}, td)
+}