feat: registry.

registry/etcd/options.go

@@ -0,0 +1,35 @@
+package etcd
+
+import (
+	"context"
+	"time"
+)
+
+// Option is etcd registry option.
+type Option func(o *options)
+
+type options struct {
+	ctx       context.Context
+	namespace string
+	ttl       time.Duration
+	maxRetry  int
+}
+
+// Context with registry context.
+func Context(ctx context.Context) Option {
+	return func(o *options) { o.ctx = ctx }
+}
+
+// Namespace with registry namespace.
+func Namespace(ns string) Option {
+	return func(o *options) { o.namespace = ns }
+}
+
+// RegisterTTL with register ttl.
+func RegisterTTL(ttl time.Duration) Option {
+	return func(o *options) { o.ttl = ttl }
+}
+
+func MaxRetry(num int) Option {
+	return func(o *options) { o.maxRetry = num }
+}