client: add interceptors option

client/client.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"strings"
 
+	grpc_middleware "github.com/grpc-ecosystem/go-grpc-middleware"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/resolver"
@@ -36,6 +37,12 @@ func New(opts ...Option) (Client, error) {
 	if !c.opts.secure {
 		c.opts.dialOptions = append(c.opts.dialOptions, grpc.WithInsecure())
 	}
+	if len(c.opts.unaryInterceptors) > 0 {
+		c.opts.dialOptions = append(c.opts.dialOptions, grpc.WithUnaryInterceptor(grpc_middleware.ChainUnaryClient(c.opts.unaryInterceptors...)))
+	}
+	if len(c.opts.streamInterceptors) > 0 {
+		c.opts.dialOptions = append(c.opts.dialOptions, grpc.WithStreamInterceptor(grpc_middleware.ChainStreamClient(c.opts.streamInterceptors...)))
+	}
 	if c.opts.addr == "" {
 		c.addr = fmt.Sprintf("%s:///%s", c.opts.registry.String(), c.opts.name)
 	} else if strings.HasPrefix(c.opts.addr, "tcp://"){

client/options.go

@@ -5,6 +5,7 @@ import (
 
 	"google.golang.org/grpc"
 
+	"go.linka.cloud/grpc/interceptors"
 	"go.linka.cloud/grpc/registry"
 )
 
@@ -60,6 +61,27 @@ func WithDialOptions(opts ...grpc.DialOption) Option {
 	}
 }
 
+func WithInterceptors(i ...interceptors.ClientInterceptors) Option {
+	return func(o *options) {
+		for _, v := range i {
+			o.unaryInterceptors = append(o.unaryInterceptors, v.UnaryClientInterceptor())
+			o.streamInterceptors = append(o.streamInterceptors, v.StreamClientInterceptor())
+		}
+	}
+}
+
+func WithUnaryInterceptors(i ...grpc.UnaryClientInterceptor) Option {
+	return func(o *options) {
+		o.unaryInterceptors = append(o.unaryInterceptors, i...)
+	}
+}
+
+func WithStreamInterceptors(i ...grpc.StreamClientInterceptor) Option {
+	return func(o *options) {
+		o.streamInterceptors = append(o.streamInterceptors, i...)
+	}
+}
+
 type options struct {
 	registry    registry.Registry
 	name        string
@@ -68,6 +90,9 @@ type options struct {
 	tlsConfig   *tls.Config
 	secure      bool
 	dialOptions []grpc.DialOption
+
+	unaryInterceptors []grpc.UnaryClientInterceptor
+	streamInterceptors []grpc.StreamClientInterceptor
 }
 
 func (o *options) Name() string {