[#801] morph/netmap: Add wrapper options

Add constructor options on wrapper level
of `netmap` contract.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

pkg/innerring/innerring.go

@@ -476,7 +476,7 @@ func New(ctx context.Context, log *zap.Logger, cfg *viper.Viper) (*Server, error
 		return nil, err
 	}
 
-	server.netmapClient, err = nmWrapper.NewFromMorph(server.morphClient, server.contracts.netmap, fee, client.TryNotary(), client.AsAlphabet())
+	server.netmapClient, err = nmWrapper.NewFromMorph(server.morphClient, server.contracts.netmap, fee, nmWrapper.TryNotary(), nmWrapper.AsAlphabet())
 	if err != nil {
 		return nil, err
 	}

pkg/morph/client/netmap/wrapper/wrapper.go

@@ -22,9 +22,25 @@ type Wrapper struct {
 	client *netmap.Client
 }
 
+// Option allows to set an optional
+// parameter of Wrapper.
+type Option func(*opts)
+
+type opts []client.StaticClientOption
+
+func defaultOpts() *opts {
+	return new(opts)
+}
+
 // NewFromMorph returns the wrapper instance from the raw morph client.
-func NewFromMorph(cli *client.Client, contract util.Uint160, fee fixedn.Fixed8, opts ...client.StaticClientOption) (*Wrapper, error) {
+func NewFromMorph(cli *client.Client, contract util.Uint160, fee fixedn.Fixed8, opts ...Option) (*Wrapper, error) {
-	staticClient, err := client.NewStatic(cli, contract, fee, opts...)
+	o := defaultOpts()
+
+	for i := range opts {
+		opts[i](o)
+	}
+
+	staticClient, err := client.NewStatic(cli, contract, fee, ([]client.StaticClientOption)(*o)...)
 	if err != nil {
 		return nil, fmt.Errorf("can't create netmap static client: %w", err)
 	}
@@ -36,3 +52,22 @@ func NewFromMorph(cli *client.Client, contract util.Uint160, fee fixedn.Fixed8,
 
 	return &Wrapper{client: enhancedNetmapClient}, nil
 }
+
+// TryNotary returns option to enable
+// notary invocation tries.
+func TryNotary() Option {
+	return func(o *opts) {
+		*o = append(*o, client.TryNotary())
+	}
+}
+
+// AsAlphabet returns option to sign main TX
+// of notary requests with client's private
+// key.
+//
+// Considered to be used by IR nodes only.
+func AsAlphabet() Option {
+	return func(o *opts) {
+		*o = append(*o, client.AsAlphabet())
+	}
+}