add meter and tracer across all options

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

proxy/options.go

@@ -4,7 +4,9 @@ package proxy
 import (
 	"github.com/unistack-org/micro/v3/client"
 	"github.com/unistack-org/micro/v3/logger"
+	"github.com/unistack-org/micro/v3/meter"
 	"github.com/unistack-org/micro/v3/router"
+	"github.com/unistack-org/micro/v3/tracer"
 )
 
 // Options for proxy
@@ -19,11 +21,29 @@ type Options struct {
 	Links map[string]client.Client
 	// Logger
 	Logger logger.Logger
+	// Meter
+	Meter meter.Meter
+	// Tracer
+	Tracer tracer.Tracer
 }
 
 // Option func signature
 type Option func(o *Options)
 
+func NewOptions(opts ...Option) Options {
+	options := Options{
+		Logger: logger.DefaultLogger,
+		Meter:  meter.DefaultMeter,
+		Tracer: tracer.DefaultTracer,
+	}
+
+	for _, o := range opts {
+		o(&options)
+	}
+
+	return options
+}
+
 // WithEndpoint sets a proxy endpoint
 func WithEndpoint(e string) Option {
 	return func(o *Options) {
@@ -52,6 +72,13 @@ func WithLogger(l logger.Logger) Option {
 	}
 }
 
+// WithMeter specifies the meter to use
+func WithMeter(m meter.Meter) Option {
+	return func(o *Options) {
+		o.Meter = m
+	}
+}
+
 // WithLink sets a link for outbound requests
 func WithLink(name string, c client.Client) Option {
 	return func(o *Options) {
@@ -61,3 +88,10 @@ func WithLink(name string, c client.Client) Option {
 		o.Links[name] = c
 	}
 }
+
+// Tracer to be used for tracing
+func Tracer(t tracer.Tracer) Option {
+	return func(o *Options) {
+		o.Tracer = t
+	}
+}