From 7d7f4046e8202bd5213daa1b3d26019208cba096 Mon Sep 17 00:00:00 2001
From: Ben Toogood <bentoogood@gmail.com>
Date: Fri, 22 May 2020 16:52:24 +0100
Subject: [PATCH 1/6] Client Cache

---
 auth/service/service.go |  2 +-
 client/cache.go         | 64 +++++++++++++++++++++++++++++++++++++++++
 client/options.go       | 14 +++++++++
 config/cmd/cmd.go       |  7 +++--
 service.go              |  1 +
 util/wrapper/wrapper.go | 45 +++++++++++++++++++++++++++++
 6 files changed, 130 insertions(+), 3 deletions(-)
 create mode 100644 client/cache.go

diff --git a/auth/service/service.go b/auth/service/service.go
index 733244a6..fb5cb755 100644
--- a/auth/service/service.go
+++ b/auth/service/service.go
@@ -261,7 +261,7 @@ func (s *svc) listRules(filters ...string) []*pb.Rule {
 
 // loadRules retrieves the rules from the auth service
 func (s *svc) loadRules() {
-	rsp, err := s.rule.List(context.TODO(), &pb.ListRequest{})
+	rsp, err := s.rule.List(context.TODO(), &pb.ListRequest{}, client.WithCache(time.Minute))
 	s.Lock()
 	defer s.Unlock()
 
diff --git a/client/cache.go b/client/cache.go
new file mode 100644
index 00000000..7a6b8347
--- /dev/null
+++ b/client/cache.go
@@ -0,0 +1,64 @@
+package client
+
+import (
+	"context"
+	"crypto/sha1"
+	"encoding/json"
+	"fmt"
+	"sync"
+	"time"
+
+	"github.com/micro/go-micro/v2/metadata"
+)
+
+// NewCache returns an initialised cache.
+// TODO: Setup a go routine to expire records in the cache.
+func NewCache() *Cache {
+	return &Cache{
+		values: make(map[string]interface{}),
+	}
+}
+
+// Cache for responses
+type Cache struct {
+	values map[string]interface{}
+	mutex  sync.Mutex
+}
+
+// Get a response from the cache
+func (c *Cache) Get(ctx context.Context, req *Request) interface{} {
+	md, _ := metadata.FromContext(ctx)
+	ck := cacheKey{req, md}
+
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+
+	if val, ok := c.values[ck.Hash()]; ok {
+		return val
+	}
+
+	return nil
+}
+
+// Set a response in the cache
+func (c *Cache) Set(ctx context.Context, req *Request, rsp interface{}, expiry time.Duration) {
+	md, _ := metadata.FromContext(ctx)
+	ck := cacheKey{req, md}
+
+	c.mutex.Lock()
+	c.values[ck.Hash()] = rsp
+	defer c.mutex.Unlock()
+}
+
+type cacheKey struct {
+	Request  *Request
+	Metadata metadata.Metadata
+}
+
+// Source: https://gobyexample.com/sha1-hashes
+func (k *cacheKey) Hash() string {
+	bytes, _ := json.Marshal(k)
+	h := sha1.New()
+	h.Write(bytes)
+	return fmt.Sprintf("%x", h.Sum(nil))
+}
diff --git a/client/options.go b/client/options.go
index 5c8f833d..8ba14698 100644
--- a/client/options.go
+++ b/client/options.go
@@ -29,6 +29,9 @@ type Options struct {
 	PoolSize int
 	PoolTTL  time.Duration
 
+	// Response cache
+	Cache *Cache
+
 	// Middleware for client
 	Wrappers []Wrapper
 
@@ -59,6 +62,8 @@ type CallOptions struct {
 	StreamTimeout time.Duration
 	// Use the services own auth token
 	ServiceToken bool
+	// Duration to cache the response for
+	CacheExpiry time.Duration
 
 	// Middleware for low level call func
 	CallWrappers []CallWrapper
@@ -91,6 +96,7 @@ type RequestOptions struct {
 
 func NewOptions(options ...Option) Options {
 	opts := Options{
+		Cache:       NewCache(),
 		Context:     context.Background(),
 		ContentType: DefaultContentType,
 		Codecs:      make(map[string]codec.NewCodec),
@@ -324,6 +330,14 @@ func WithServiceToken() CallOption {
 	}
 }
 
+// WithCache is a CallOption which sets the duration the response
+// shoull be cached for
+func WithCache(c time.Duration) CallOption {
+	return func(o *CallOptions) {
+		o.CacheExpiry = c
+	}
+}
+
 func WithMessageContentType(ct string) MessageOption {
 	return func(o *MessageOptions) {
 		o.ContentType = ct
diff --git a/config/cmd/cmd.go b/config/cmd/cmd.go
index 6ee8bd92..5753cefe 100644
--- a/config/cmd/cmd.go
+++ b/config/cmd/cmd.go
@@ -471,9 +471,12 @@ func (c *cmd) Before(ctx *cli.Context) error {
 	var serverOpts []server.Option
 	var clientOpts []client.Option
 
-	// setup a client to use when calling the runtime
+	// setup a client to use when calling the runtime. It is important the auth client is wrapped
+	// after the cache client since the wrappers are applied in reverse order and the cache will use
+	// some of the headers set by the auth client.
 	authFn := func() auth.Auth { return *c.opts.Auth }
-	microClient := wrapper.AuthClient(authFn, grpc.NewClient())
+	microClient := wrapper.CacheClient(grpc.NewClient())
+	microClient = wrapper.AuthClient(authFn, microClient)
 
 	// Set the store
 	if name := ctx.String("store"); len(name) > 0 {
diff --git a/service.go b/service.go
index 9c414654..da13c8cd 100644
--- a/service.go
+++ b/service.go
@@ -42,6 +42,7 @@ func newService(opts ...Option) Service {
 	// wrap client to inject From-Service header on any calls
 	options.Client = wrapper.FromService(serviceName, options.Client)
 	options.Client = wrapper.TraceCall(serviceName, trace.DefaultTracer, options.Client)
+	options.Client = wrapper.CacheClient(options.Client)
 	options.Client = wrapper.AuthClient(authFn, options.Client)
 
 	// wrap the server to provide handler stats
diff --git a/util/wrapper/wrapper.go b/util/wrapper/wrapper.go
index 51672f0a..598df497 100644
--- a/util/wrapper/wrapper.go
+++ b/util/wrapper/wrapper.go
@@ -227,3 +227,48 @@ func AuthHandler(fn func() auth.Auth) server.HandlerWrapper {
 		}
 	}
 }
+
+type cacheWrapper struct {
+	client.Client
+}
+
+// Call executes the request. If the CacheExpiry option was set, the response will be cached using
+// a hash of the metadata and request as the key.
+func (c *cacheWrapper) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
+	// parse the options
+	var options client.CallOptions
+	for _, o := range opts {
+		o(&options)
+	}
+
+	// if the client doesn't have a cacbe setup don't continue
+	cache := c.Options().Cache
+	if cache == nil {
+		return c.Client.Call(ctx, req, rsp, opts...)
+	}
+
+	// if the cache expiry is not set, execute the call without the cache
+	if options.CacheExpiry == 0 {
+		return c.Client.Call(ctx, req, rsp, opts...)
+	}
+
+	// check to see if there is a response
+	if cRsp := cache.Get(ctx, &req); cRsp != nil {
+		rsp = cRsp
+		return nil
+	}
+
+	// don't cache the result if there was an error
+	if err := c.Client.Call(ctx, req, rsp, opts...); err != nil {
+		return err
+	}
+
+	// set the result in the cache
+	cache.Set(ctx, &req, rsp, options.CacheExpiry)
+	return nil
+}
+
+// CacheClient wraps requests with the cache wrapper
+func CacheClient(c client.Client) client.Client {
+	return &cacheWrapper{c}
+}

From 496293afa1e013a10284f3625d9e5b84dc5db677 Mon Sep 17 00:00:00 2001
From: Ben Toogood <bentoogood@gmail.com>
Date: Sat, 23 May 2020 11:34:44 +0100
Subject: [PATCH 2/6] Use hash/fnv, add tests, fix request bug

---
 client/cache.go         | 53 ++++++++++++----------------
 client/cache_test.go    | 76 +++++++++++++++++++++++++++++++++++++++++
 util/wrapper/wrapper.go |  4 +--
 3 files changed, 99 insertions(+), 34 deletions(-)
 create mode 100644 client/cache_test.go

diff --git a/client/cache.go b/client/cache.go
index 7a6b8347..e4781dd6 100644
--- a/client/cache.go
+++ b/client/cache.go
@@ -2,63 +2,52 @@ package client
 
 import (
 	"context"
-	"crypto/sha1"
 	"encoding/json"
 	"fmt"
-	"sync"
+	"hash/fnv"
 	"time"
 
 	"github.com/micro/go-micro/v2/metadata"
+	cache "github.com/patrickmn/go-cache"
 )
 
 // NewCache returns an initialised cache.
-// TODO: Setup a go routine to expire records in the cache.
 func NewCache() *Cache {
 	return &Cache{
-		values: make(map[string]interface{}),
+		cache: cache.New(cache.NoExpiration, 30*time.Second),
 	}
 }
 
 // Cache for responses
 type Cache struct {
-	values map[string]interface{}
-	mutex  sync.Mutex
+	cache *cache.Cache
 }
 
 // Get a response from the cache
-func (c *Cache) Get(ctx context.Context, req *Request) interface{} {
-	md, _ := metadata.FromContext(ctx)
-	ck := cacheKey{req, md}
-
-	c.mutex.Lock()
-	defer c.mutex.Unlock()
-
-	if val, ok := c.values[ck.Hash()]; ok {
-		return val
-	}
-
-	return nil
+func (c *Cache) Get(ctx context.Context, req *Request) (interface{}, bool) {
+	return c.cache.Get(key(ctx, req))
 }
 
 // Set a response in the cache
 func (c *Cache) Set(ctx context.Context, req *Request, rsp interface{}, expiry time.Duration) {
+	c.cache.Set(key(ctx, req), rsp, expiry)
+}
+
+// key returns a hash for the context and request
+func key(ctx context.Context, req *Request) string {
 	md, _ := metadata.FromContext(ctx)
-	ck := cacheKey{req, md}
 
-	c.mutex.Lock()
-	c.values[ck.Hash()] = rsp
-	defer c.mutex.Unlock()
-}
+	bytes, _ := json.Marshal(map[string]interface{}{
+		"metadata": md,
+		"request": map[string]interface{}{
+			"service":  (*req).Service(),
+			"endpoint": (*req).Endpoint(),
+			"method":   (*req).Method(),
+			"body":     (*req).Body(),
+		},
+	})
 
-type cacheKey struct {
-	Request  *Request
-	Metadata metadata.Metadata
-}
-
-// Source: https://gobyexample.com/sha1-hashes
-func (k *cacheKey) Hash() string {
-	bytes, _ := json.Marshal(k)
-	h := sha1.New()
+	h := fnv.New64()
 	h.Write(bytes)
 	return fmt.Sprintf("%x", h.Sum(nil))
 }
diff --git a/client/cache_test.go b/client/cache_test.go
new file mode 100644
index 00000000..337312c1
--- /dev/null
+++ b/client/cache_test.go
@@ -0,0 +1,76 @@
+package client
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/micro/go-micro/v2/metadata"
+)
+
+func TestCache(t *testing.T) {
+	ctx := context.TODO()
+	req := NewRequest("go.micro.service.foo", "Foo.Bar", nil)
+
+	t.Run("CacheMiss", func(t *testing.T) {
+		if _, ok := NewCache().Get(ctx, &req); ok {
+			t.Errorf("Expected to get no result from Get")
+		}
+	})
+
+	t.Run("CacheHit", func(t *testing.T) {
+		c := NewCache()
+
+		rsp := "theresponse"
+		c.Set(ctx, &req, rsp, time.Minute)
+
+		if res, ok := c.Get(ctx, &req); !ok {
+			t.Errorf("Expected a result, got nothing")
+		} else if res != rsp {
+			t.Errorf("Expected '%v' result, got '%v'", rsp, res)
+		}
+	})
+}
+
+func TestCacheKey(t *testing.T) {
+	ctx := context.TODO()
+	req1 := NewRequest("go.micro.service.foo", "Foo.Bar", nil)
+	req2 := NewRequest("go.micro.service.foo", "Foo.Baz", nil)
+	req3 := NewRequest("go.micro.service.foo", "Foo.Baz", "customquery")
+
+	t.Run("IdenticalRequests", func(t *testing.T) {
+		key1 := key(ctx, &req1)
+		key2 := key(ctx, &req1)
+		if key1 != key2 {
+			t.Errorf("Expected the keys to match for identical requests and context")
+		}
+	})
+
+	t.Run("DifferentRequestEndpoints", func(t *testing.T) {
+		key1 := key(ctx, &req1)
+		key2 := key(ctx, &req2)
+
+		if key1 == key2 {
+			t.Errorf("Expected the keys to differ for different request endpoints")
+		}
+	})
+
+	t.Run("DifferentRequestBody", func(t *testing.T) {
+		key1 := key(ctx, &req2)
+		key2 := key(ctx, &req3)
+
+		if key1 == key2 {
+			t.Errorf("Expected the keys to differ for different request bodies")
+		}
+	})
+
+	t.Run("DifferentMetadata", func(t *testing.T) {
+		mdCtx := metadata.Set(context.TODO(), "foo", "bar")
+		key1 := key(mdCtx, &req1)
+		key2 := key(ctx, &req1)
+
+		if key1 == key2 {
+			t.Errorf("Expected the keys to differ for different metadata")
+		}
+	})
+}
diff --git a/util/wrapper/wrapper.go b/util/wrapper/wrapper.go
index 598df497..d5ff9e83 100644
--- a/util/wrapper/wrapper.go
+++ b/util/wrapper/wrapper.go
@@ -253,8 +253,8 @@ func (c *cacheWrapper) Call(ctx context.Context, req client.Request, rsp interfa
 	}
 
 	// check to see if there is a response
-	if cRsp := cache.Get(ctx, &req); cRsp != nil {
-		rsp = cRsp
+	if r, ok := cache.Get(ctx, &req); ok {
+		rsp = r
 		return nil
 	}
 

From 67146ecdc2c0d9340696348e762781b3ccb6d6ce Mon Sep 17 00:00:00 2001
From: Ben Toogood <bentoogood@gmail.com>
Date: Sun, 24 May 2020 18:05:23 +0100
Subject: [PATCH 3/6] Client Cache tests

---
 util/wrapper/wrapper_test.go | 71 +++++++++++++++++++++++++++++++++++-
 1 file changed, 70 insertions(+), 1 deletion(-)

diff --git a/util/wrapper/wrapper_test.go b/util/wrapper/wrapper_test.go
index fa03af21..c3454779 100644
--- a/util/wrapper/wrapper_test.go
+++ b/util/wrapper/wrapper_test.go
@@ -3,7 +3,9 @@ package wrapper
 import (
 	"context"
 	"testing"
+	"time"
 
+	"github.com/micro/go-micro/v2/client"
 	"github.com/micro/go-micro/v2/metadata"
 )
 
@@ -49,5 +51,72 @@ func TestWrapper(t *testing.T) {
 			}
 		}
 	}
-
+}
+
+type testClient struct {
+	callCount int
+	callRsp   interface{}
+	cache     *client.Cache
+	client.Client
+}
+
+func (c *testClient) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
+	c.callCount++
+	rsp = c.callRsp
+	return nil
+}
+
+func (c *testClient) Options() client.Options {
+	return client.Options{Cache: c.cache}
+}
+func TestCacheWrapper(t *testing.T) {
+	req := client.NewRequest("go.micro.service.foo", "Foo.Bar", nil)
+
+	t.Run("NilCache", func(t *testing.T) {
+		cli := new(testClient)
+		w := CacheClient(cli)
+
+		// perfroming two requests should increment the call count by two indicating the cache wasn't
+		// used even though the WithCache option was passed.
+		w.Call(context.TODO(), req, nil, client.WithCache(time.Minute))
+		w.Call(context.TODO(), req, nil, client.WithCache(time.Minute))
+
+		if cli.callCount != 2 {
+			t.Errorf("Expected the client to have been called twice")
+		}
+	})
+
+	t.Run("OptionNotSet", func(t *testing.T) {
+		cli := new(testClient)
+		w := CacheClient(cli)
+
+		// perfroming two requests should increment the call count by two since we didn't pass the WithCache
+		// option to Call.
+		w.Call(context.TODO(), req, nil)
+		w.Call(context.TODO(), req, nil)
+
+		if cli.callCount != 2 {
+			t.Errorf("Expected the client to have been called twice")
+		}
+	})
+
+	t.Run("OptionSet", func(t *testing.T) {
+		cli := &testClient{callRsp: "foobar", cache: client.NewCache()}
+		w := CacheClient(cli)
+
+		// perfroming two requests should increment the call count by once since the second request should
+		// have used the cache
+		err1 := w.Call(context.TODO(), req, nil, client.WithCache(time.Minute))
+		err2 := w.Call(context.TODO(), req, nil, client.WithCache(time.Minute))
+
+		if err1 != nil {
+			t.Errorf("Expected nil error, got %v", err1)
+		}
+		if err2 != nil {
+			t.Errorf("Expected nil error, got %v", err2)
+		}
+		if cli.callCount != 1 {
+			t.Errorf("Expected the client to be called 1 time, was actually called %v time(s)", cli.callCount)
+		}
+	})
 }

From 2729569f6625cc24ff28e32ff937b498310e9d96 Mon Sep 17 00:00:00 2001
From: Ben Toogood <bentoogood@gmail.com>
Date: Sun, 24 May 2020 18:45:57 +0100
Subject: [PATCH 4/6] Add Debug.Cache method

---
 client/cache.go                       |   13 +
 config/cmd/cmd.go                     |    3 +-
 debug/service/handler/debug.go        |   12 +-
 debug/service/proto/debug.pb.go       |  190 +++-
 debug/service/proto/debug.pb.micro.go |   17 +
 debug/service/proto/debug.proto       |   13 +-
 server/proto/server.pb.go             |  552 +++++-----
 server/proto/server.pb.micro.go       |    2 +-
 service.go                            |    8 +-
 util/file/proto/file.pb.go            | 1452 ++++++++++++-------------
 util/file/proto/file.pb.micro.go      |    2 +-
 util/mux/mux.go                       |    3 +-
 util/wrapper/wrapper.go               |    7 +-
 13 files changed, 1148 insertions(+), 1126 deletions(-)

diff --git a/client/cache.go b/client/cache.go
index e4781dd6..16bd9c70 100644
--- a/client/cache.go
+++ b/client/cache.go
@@ -33,6 +33,19 @@ func (c *Cache) Set(ctx context.Context, req *Request, rsp interface{}, expiry t
 	c.cache.Set(key(ctx, req), rsp, expiry)
 }
 
+// List the key value pairs in the cache
+func (c *Cache) List() map[string]string {
+	items := c.cache.Items()
+
+	rsp := make(map[string]string, len(items))
+	for k, v := range items {
+		bytes, _ := json.Marshal(v.Object)
+		rsp[k] = string(bytes)
+	}
+
+	return rsp
+}
+
 // key returns a hash for the context and request
 func key(ctx context.Context, req *Request) string {
 	md, _ := metadata.FromContext(ctx)
diff --git a/config/cmd/cmd.go b/config/cmd/cmd.go
index 5753cefe..2f65b86c 100644
--- a/config/cmd/cmd.go
+++ b/config/cmd/cmd.go
@@ -475,7 +475,8 @@ func (c *cmd) Before(ctx *cli.Context) error {
 	// after the cache client since the wrappers are applied in reverse order and the cache will use
 	// some of the headers set by the auth client.
 	authFn := func() auth.Auth { return *c.opts.Auth }
-	microClient := wrapper.CacheClient(grpc.NewClient())
+	cacheFn := func() *client.Cache { return (*c.opts.Client).Options().Cache }
+	microClient := wrapper.CacheClient(cacheFn, grpc.NewClient())
 	microClient = wrapper.AuthClient(authFn, microClient)
 
 	// Set the store
diff --git a/debug/service/handler/debug.go b/debug/service/handler/debug.go
index ffe1a922..cf97cdc0 100644
--- a/debug/service/handler/debug.go
+++ b/debug/service/handler/debug.go
@@ -5,6 +5,7 @@ import (
 	"context"
 	"time"
 
+	"github.com/micro/go-micro/v2/client"
 	"github.com/micro/go-micro/v2/debug/log"
 	proto "github.com/micro/go-micro/v2/debug/service/proto"
 	"github.com/micro/go-micro/v2/debug/stats"
@@ -13,11 +14,12 @@ import (
 )
 
 // NewHandler returns an instance of the Debug Handler
-func NewHandler() *Debug {
+func NewHandler(c client.Client) *Debug {
 	return &Debug{
 		log:   log.DefaultLog,
 		stats: stats.DefaultStats,
 		trace: trace.DefaultTracer,
+		cache: c.Options().Cache,
 	}
 }
 
@@ -30,6 +32,8 @@ type Debug struct {
 	stats stats.Stats
 	// the tracer
 	trace trace.Tracer
+	// the cache
+	cache *client.Cache
 }
 
 func (d *Debug) Health(ctx context.Context, req *proto.HealthRequest, rsp *proto.HealthResponse) error {
@@ -164,3 +168,9 @@ func (d *Debug) Log(ctx context.Context, stream server.Stream) error {
 
 	return nil
 }
+
+// Cache returns all the key value pairs in the client cache
+func (d *Debug) Cache(ctx context.Context, req *proto.CacheRequest, rsp *proto.CacheResponse) error {
+	rsp.Values = d.cache.List()
+	return nil
+}
diff --git a/debug/service/proto/debug.pb.go b/debug/service/proto/debug.pb.go
index 41e6aebe..859d44cd 100644
--- a/debug/service/proto/debug.pb.go
+++ b/debug/service/proto/debug.pb.go
@@ -582,6 +582,76 @@ func (m *Span) GetType() SpanType {
 	return SpanType_INBOUND
 }
 
+type CacheRequest struct {
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *CacheRequest) Reset()         { *m = CacheRequest{} }
+func (m *CacheRequest) String() string { return proto.CompactTextString(m) }
+func (*CacheRequest) ProtoMessage()    {}
+func (*CacheRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df91f41a5db378e6, []int{9}
+}
+
+func (m *CacheRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_CacheRequest.Unmarshal(m, b)
+}
+func (m *CacheRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_CacheRequest.Marshal(b, m, deterministic)
+}
+func (m *CacheRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_CacheRequest.Merge(m, src)
+}
+func (m *CacheRequest) XXX_Size() int {
+	return xxx_messageInfo_CacheRequest.Size(m)
+}
+func (m *CacheRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_CacheRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_CacheRequest proto.InternalMessageInfo
+
+type CacheResponse struct {
+	Values               map[string]string `protobuf:"bytes,1,rep,name=values,proto3" json:"values,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *CacheResponse) Reset()         { *m = CacheResponse{} }
+func (m *CacheResponse) String() string { return proto.CompactTextString(m) }
+func (*CacheResponse) ProtoMessage()    {}
+func (*CacheResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_df91f41a5db378e6, []int{10}
+}
+
+func (m *CacheResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_CacheResponse.Unmarshal(m, b)
+}
+func (m *CacheResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_CacheResponse.Marshal(b, m, deterministic)
+}
+func (m *CacheResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_CacheResponse.Merge(m, src)
+}
+func (m *CacheResponse) XXX_Size() int {
+	return xxx_messageInfo_CacheResponse.Size(m)
+}
+func (m *CacheResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_CacheResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_CacheResponse proto.InternalMessageInfo
+
+func (m *CacheResponse) GetValues() map[string]string {
+	if m != nil {
+		return m.Values
+	}
+	return nil
+}
+
 func init() {
 	proto.RegisterEnum("SpanType", SpanType_name, SpanType_value)
 	proto.RegisterType((*HealthRequest)(nil), "HealthRequest")
@@ -595,50 +665,56 @@ func init() {
 	proto.RegisterType((*TraceResponse)(nil), "TraceResponse")
 	proto.RegisterType((*Span)(nil), "Span")
 	proto.RegisterMapType((map[string]string)(nil), "Span.MetadataEntry")
+	proto.RegisterType((*CacheRequest)(nil), "CacheRequest")
+	proto.RegisterType((*CacheResponse)(nil), "CacheResponse")
+	proto.RegisterMapType((map[string]string)(nil), "CacheResponse.ValuesEntry")
 }
 
 func init() { proto.RegisterFile("debug/service/proto/debug.proto", fileDescriptor_df91f41a5db378e6) }
 
 var fileDescriptor_df91f41a5db378e6 = []byte{
-	// 594 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xa4, 0x54, 0xdb, 0x6e, 0xd3, 0x40,
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-	0x2d, 0x22, 0xf7, 0xc0, 0xcf, 0xdb, 0xbe, 0x91, 0x7a, 0x18, 0x8f, 0x1a, 0xa0, 0x58, 0x51, 0x35,
-	0x39, 0xea, 0x51, 0x3c, 0x6a, 0x40, 0xfa, 0xcb, 0x81, 0x19, 0xc5, 0xbc, 0xe5, 0xc5, 0xdf, 0xe6,
-	0x79, 0x9b, 0xe6, 0xbd, 0x86, 0xa0, 0x46, 0xc9, 0x0a, 0x26, 0x59, 0xec, 0xee, 0x79, 0xcb, 0xad,
-	0xfd, 0xfb, 0x99, 0x79, 0x98, 0x7d, 0xb1, 0xfc, 0xc7, 0x46, 0xf2, 0x35, 0xbd, 0x2e, 0x53, 0x9d,
-	0xd7, 0x28, 0x04, 0x2b, 0x8d, 0xad, 0x21, 0x1d, 0x60, 0xf2, 0x1e, 0x16, 0xa3, 0x47, 0x64, 0x07,
-	0xbc, 0x6f, 0xb8, 0xb6, 0x03, 0xaa, 0xa3, 0x6a, 0xf7, 0x8a, 0x5d, 0xf6, 0xa8, 0x67, 0x0b, 0xa9,
-	0x01, 0xef, 0xdc, 0xb7, 0x4e, 0xfa, 0x04, 0xb6, 0x4f, 0x39, 0xcb, 0x71, 0x30, 0x28, 0x02, 0xb7,
-	0x2a, 0xec, 0x53, 0xb7, 0x2a, 0xd2, 0x97, 0xb0, 0xb0, 0xf7, 0x36, 0x15, 0x0f, 0xc1, 0x17, 0x1d,
-	0x6b, 0x54, 0xd0, 0x54, 0xdf, 0x7e, 0x76, 0xd2, 0xb1, 0x86, 0x1a, 0x2e, 0xfd, 0xe1, 0xc2, 0x54,
-	0x61, 0xf5, 0x83, 0x52, 0x3d, 0xb3, 0x4a, 0x06, 0x58, 0x71, 0x77, 0x10, 0x57, 0x9e, 0x77, 0x8c,
-	0xa3, 0x35, 0x37, 0xa4, 0x16, 0x11, 0x02, 0xd3, 0x86, 0xd5, 0xc6, 0xdc, 0x90, 0xea, 0xf3, 0x66,
-	0xde, 0xfc, 0x71, 0xde, 0x12, 0x08, 0x8a, 0x9e, 0x33, 0x59, 0xb5, 0x8d, 0xcd, 0xca, 0x35, 0x26,
-	0xab, 0x0d, 0xa3, 0xe7, 0xba, 0xe1, 0xbb, 0xba, 0xe1, 0x7f, 0xda, 0xfc, 0x18, 0xa6, 0x72, 0xdd,
-	0xa1, 0x0e, 0x51, 0xb4, 0x1f, 0xea, 0xe2, 0xd3, 0x75, 0x87, 0x54, 0xd3, 0xff, 0xe5, 0xf5, 0xf3,
-	0xa7, 0x10, 0x0c, 0x72, 0x64, 0x0b, 0xe6, 0x9f, 0x8f, 0x3e, 0x1c, 0x9f, 0x1d, 0x1d, 0xec, 0x4c,
-	0xc8, 0x36, 0x04, 0xc7, 0x67, 0xa7, 0x06, 0x39, 0xfb, 0x3f, 0x1d, 0xf0, 0x0f, 0xd4, 0x62, 0x20,
-	0xbb, 0xe0, 0x1d, 0xb6, 0x25, 0xd9, 0xca, 0x6e, 0x12, 0x9c, 0xcc, 0x6d, 0x50, 0xd2, 0xc9, 0x2b,
-	0x87, 0xbc, 0x80, 0x99, 0x59, 0x04, 0x24, 0xca, 0x46, 0xcb, 0x23, 0xb9, 0x93, 0x8d, 0x37, 0x44,
-	0x3a, 0x21, 0x4b, 0xf0, 0xf5, 0x07, 0x4e, 0x16, 0xd9, 0xe6, 0x4e, 0x48, 0xa2, 0x6c, 0xf4, 0xdd,
-	0x9b, 0x4a, 0xfd, 0xa7, 0x93, 0x45, 0xb6, 0x19, 0x8e, 0x24, 0xca, 0x46, 0x59, 0x48, 0x27, 0xe7,
-	0x33, 0xbd, 0xbb, 0xde, 0xfc, 0x09, 0x00, 0x00, 0xff, 0xff, 0x6e, 0x42, 0x7f, 0x05, 0xde, 0x04,
-	0x00, 0x00,
+	// 646 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xa4, 0x54, 0xdb, 0x6e, 0xd3, 0x4a,
+	0x14, 0x8d, 0xed, 0x38, 0xb1, 0x77, 0x62, 0x9f, 0x6a, 0xce, 0x45, 0x96, 0x0f, 0xd0, 0xca, 0x12,
+	0x52, 0xb8, 0x68, 0x02, 0xe1, 0x85, 0xcb, 0x1b, 0x14, 0x09, 0xa4, 0xd2, 0x4a, 0xd3, 0x96, 0xf7,
+	0xa9, 0x3d, 0x4a, 0x03, 0xf5, 0x85, 0x99, 0x71, 0xa5, 0xbc, 0xf0, 0x23, 0xfc, 0x04, 0xff, 0x82,
+	0xf8, 0x1f, 0x34, 0x17, 0xb7, 0xb6, 0x10, 0xaa, 0x10, 0x6f, 0x5e, 0x6b, 0xaf, 0xd9, 0xd9, 0x7b,
+	0x69, 0x65, 0xc3, 0x6e, 0xc1, 0xce, 0xda, 0xf5, 0x52, 0x30, 0x7e, 0xb9, 0xc9, 0xd9, 0xb2, 0xe1,
+	0xb5, 0xac, 0x97, 0x9a, 0xc3, 0xfa, 0x3b, 0xbb, 0x07, 0xd1, 0x1b, 0x46, 0x2f, 0xe4, 0x39, 0x61,
+	0x9f, 0x5a, 0x26, 0x24, 0x4a, 0x60, 0x6a, 0xd5, 0x89, 0xb3, 0xe7, 0x2c, 0x42, 0xd2, 0xc1, 0x6c,
+	0x01, 0x71, 0x27, 0x15, 0x4d, 0x5d, 0x09, 0x86, 0xfe, 0x83, 0x89, 0x90, 0x54, 0xb6, 0xc2, 0x4a,
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+	0x8b, 0x14, 0x5f, 0xb2, 0xb2, 0xe6, 0xdb, 0x64, 0x6c, 0x78, 0x83, 0x54, 0x27, 0x79, 0xce, 0x19,
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+	0x94, 0x42, 0xc0, 0xcd, 0x22, 0x22, 0x99, 0x6a, 0xf6, 0x0a, 0xab, 0xee, 0x8c, 0xf3, 0x9a, 0x8b,
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+	0x40, 0xb1, 0x62, 0x53, 0xe5, 0x4c, 0xaf, 0xe2, 0x11, 0x03, 0xb2, 0xaf, 0x0e, 0x4c, 0x08, 0xcb,
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+	0xf1, 0x3f, 0xf8, 0xa2, 0xa1, 0x95, 0x0a, 0x9a, 0x9a, 0xdb, 0xc7, 0xc7, 0x0d, 0xad, 0x88, 0xe1,
+	0xb2, 0x2f, 0x2e, 0x8c, 0x15, 0x56, 0x3f, 0x28, 0xd5, 0x33, 0xdb, 0xc9, 0x00, 0xdb, 0xdc, 0xed,
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+	0xf9, 0x36, 0x8c, 0xe5, 0xb6, 0x61, 0x3a, 0x44, 0xf1, 0x2a, 0xd4, 0xe2, 0x93, 0x6d, 0xc3, 0x88,
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+	0x0c, 0x72, 0x56, 0xdf, 0x1c, 0xf0, 0xf7, 0xd5, 0xa1, 0x42, 0xbb, 0xe0, 0x1d, 0xd4, 0x6b, 0x34,
+	0xc3, 0xd7, 0xff, 0xa8, 0x74, 0x6a, 0x83, 0x9b, 0x8d, 0x1e, 0x39, 0xe8, 0x01, 0x4c, 0xcc, 0x61,
+	0x42, 0x31, 0x1e, 0x1c, 0xb3, 0xf4, 0x2f, 0x3c, 0xbc, 0x58, 0xd9, 0x08, 0x2d, 0xc0, 0xd7, 0x07,
+	0x07, 0x45, 0xb8, 0x7f, 0xa3, 0xd2, 0x18, 0x0f, 0xee, 0x90, 0x51, 0xea, 0x10, 0xa2, 0x08, 0xf7,
+	0xc3, 0x9a, 0xc6, 0x78, 0x90, 0x4d, 0xa3, 0xd4, 0x96, 0xa1, 0x08, 0xf7, 0xad, 0x4e, 0xe3, 0xa1,
+	0x93, 0xd9, 0xe8, 0x6c, 0xa2, 0xaf, 0xee, 0x93, 0x1f, 0x01, 0x00, 0x00, 0xff, 0xff, 0x22, 0x65,
+	0x99, 0x10, 0x98, 0x05, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -657,6 +733,7 @@ type DebugClient interface {
 	Health(ctx context.Context, in *HealthRequest, opts ...grpc.CallOption) (*HealthResponse, error)
 	Stats(ctx context.Context, in *StatsRequest, opts ...grpc.CallOption) (*StatsResponse, error)
 	Trace(ctx context.Context, in *TraceRequest, opts ...grpc.CallOption) (*TraceResponse, error)
+	Cache(ctx context.Context, in *CacheRequest, opts ...grpc.CallOption) (*CacheResponse, error)
 }
 
 type debugClient struct {
@@ -726,12 +803,22 @@ func (c *debugClient) Trace(ctx context.Context, in *TraceRequest, opts ...grpc.
 	return out, nil
 }
 
+func (c *debugClient) Cache(ctx context.Context, in *CacheRequest, opts ...grpc.CallOption) (*CacheResponse, error) {
+	out := new(CacheResponse)
+	err := c.cc.Invoke(ctx, "/Debug/Cache", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // DebugServer is the server API for Debug service.
 type DebugServer interface {
 	Log(*LogRequest, Debug_LogServer) error
 	Health(context.Context, *HealthRequest) (*HealthResponse, error)
 	Stats(context.Context, *StatsRequest) (*StatsResponse, error)
 	Trace(context.Context, *TraceRequest) (*TraceResponse, error)
+	Cache(context.Context, *CacheRequest) (*CacheResponse, error)
 }
 
 // UnimplementedDebugServer can be embedded to have forward compatible implementations.
@@ -750,6 +837,9 @@ func (*UnimplementedDebugServer) Stats(ctx context.Context, req *StatsRequest) (
 func (*UnimplementedDebugServer) Trace(ctx context.Context, req *TraceRequest) (*TraceResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Trace not implemented")
 }
+func (*UnimplementedDebugServer) Cache(ctx context.Context, req *CacheRequest) (*CacheResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Cache not implemented")
+}
 
 func RegisterDebugServer(s *grpc.Server, srv DebugServer) {
 	s.RegisterService(&_Debug_serviceDesc, srv)
@@ -830,6 +920,24 @@ func _Debug_Trace_Handler(srv interface{}, ctx context.Context, dec func(interfa
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Debug_Cache_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(CacheRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DebugServer).Cache(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/Debug/Cache",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DebugServer).Cache(ctx, req.(*CacheRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _Debug_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "Debug",
 	HandlerType: (*DebugServer)(nil),
@@ -846,6 +954,10 @@ var _Debug_serviceDesc = grpc.ServiceDesc{
 			MethodName: "Trace",
 			Handler:    _Debug_Trace_Handler,
 		},
+		{
+			MethodName: "Cache",
+			Handler:    _Debug_Cache_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
diff --git a/debug/service/proto/debug.pb.micro.go b/debug/service/proto/debug.pb.micro.go
index 3d71b722..1e436e22 100644
--- a/debug/service/proto/debug.pb.micro.go
+++ b/debug/service/proto/debug.pb.micro.go
@@ -46,6 +46,7 @@ type DebugService interface {
 	Health(ctx context.Context, in *HealthRequest, opts ...client.CallOption) (*HealthResponse, error)
 	Stats(ctx context.Context, in *StatsRequest, opts ...client.CallOption) (*StatsResponse, error)
 	Trace(ctx context.Context, in *TraceRequest, opts ...client.CallOption) (*TraceResponse, error)
+	Cache(ctx context.Context, in *CacheRequest, opts ...client.CallOption) (*CacheResponse, error)
 }
 
 type debugService struct {
@@ -139,6 +140,16 @@ func (c *debugService) Trace(ctx context.Context, in *TraceRequest, opts ...clie
 	return out, nil
 }
 
+func (c *debugService) Cache(ctx context.Context, in *CacheRequest, opts ...client.CallOption) (*CacheResponse, error) {
+	req := c.c.NewRequest(c.name, "Debug.Cache", in)
+	out := new(CacheResponse)
+	err := c.c.Call(ctx, req, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // Server API for Debug service
 
 type DebugHandler interface {
@@ -146,6 +157,7 @@ type DebugHandler interface {
 	Health(context.Context, *HealthRequest, *HealthResponse) error
 	Stats(context.Context, *StatsRequest, *StatsResponse) error
 	Trace(context.Context, *TraceRequest, *TraceResponse) error
+	Cache(context.Context, *CacheRequest, *CacheResponse) error
 }
 
 func RegisterDebugHandler(s server.Server, hdlr DebugHandler, opts ...server.HandlerOption) error {
@@ -154,6 +166,7 @@ func RegisterDebugHandler(s server.Server, hdlr DebugHandler, opts ...server.Han
 		Health(ctx context.Context, in *HealthRequest, out *HealthResponse) error
 		Stats(ctx context.Context, in *StatsRequest, out *StatsResponse) error
 		Trace(ctx context.Context, in *TraceRequest, out *TraceResponse) error
+		Cache(ctx context.Context, in *CacheRequest, out *CacheResponse) error
 	}
 	type Debug struct {
 		debug
@@ -217,3 +230,7 @@ func (h *debugHandler) Stats(ctx context.Context, in *StatsRequest, out *StatsRe
 func (h *debugHandler) Trace(ctx context.Context, in *TraceRequest, out *TraceResponse) error {
 	return h.DebugHandler.Trace(ctx, in, out)
 }
+
+func (h *debugHandler) Cache(ctx context.Context, in *CacheRequest, out *CacheResponse) error {
+	return h.DebugHandler.Cache(ctx, in, out)
+}
diff --git a/debug/service/proto/debug.proto b/debug/service/proto/debug.proto
index 7516651e..6646cb65 100644
--- a/debug/service/proto/debug.proto
+++ b/debug/service/proto/debug.proto
@@ -1,10 +1,11 @@
 syntax = "proto3";
 
 service Debug {
-        rpc Log(LogRequest) returns (stream Record) {};
-        rpc Health(HealthRequest) returns (HealthResponse) {};
-        rpc Stats(StatsRequest) returns (StatsResponse) {};
+	rpc Log(LogRequest) returns (stream Record) {};
+	rpc Health(HealthRequest) returns (HealthResponse) {};
+	rpc Stats(StatsRequest) returns (StatsResponse) {};
 	rpc Trace(TraceRequest) returns (TraceResponse) {};
+	rpc Cache(CacheRequest) returns (CacheResponse) {};
 }
 
 message HealthRequest {
@@ -97,3 +98,9 @@ message Span {
 	map<string,string> metadata = 7;
 	SpanType type = 8;
 }
+
+message CacheRequest {}
+
+message CacheResponse {
+	map<string, string> values = 1;
+}
\ No newline at end of file
diff --git a/server/proto/server.pb.go b/server/proto/server.pb.go
index ea21354b..5813ff28 100644
--- a/server/proto/server.pb.go
+++ b/server/proto/server.pb.go
@@ -1,350 +1,324 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
-// versions:
-// 	protoc-gen-go v1.22.0
-// 	protoc        v3.6.1
-// source: github.com/micro/go-micro/server/proto/server.proto
+// source: server/proto/server.proto
 
 package go_micro_server
 
 import (
+	context "context"
+	fmt "fmt"
 	proto "github.com/golang/protobuf/proto"
-	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	reflect "reflect"
-	sync "sync"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+	math "math"
 )
 
-const (
-	// Verify that this generated code is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
-	// Verify that runtime/protoimpl is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
-)
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
 
-// This is a compile-time assertion that a sufficiently up-to-date version
-// of the legacy proto package is being used.
-const _ = proto.ProtoPackageIsVersion4
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
 
 type HandleRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Service  string `protobuf:"bytes,1,opt,name=service,proto3" json:"service,omitempty"`
-	Endpoint string `protobuf:"bytes,2,opt,name=endpoint,proto3" json:"endpoint,omitempty"`
-	Protocol string `protobuf:"bytes,3,opt,name=protocol,proto3" json:"protocol,omitempty"`
+	Service              string   `protobuf:"bytes,1,opt,name=service,proto3" json:"service,omitempty"`
+	Endpoint             string   `protobuf:"bytes,2,opt,name=endpoint,proto3" json:"endpoint,omitempty"`
+	Protocol             string   `protobuf:"bytes,3,opt,name=protocol,proto3" json:"protocol,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *HandleRequest) Reset() {
-	*x = HandleRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_github_com_micro_go_micro_server_proto_server_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *HandleRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*HandleRequest) ProtoMessage() {}
-
-func (x *HandleRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_github_com_micro_go_micro_server_proto_server_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use HandleRequest.ProtoReflect.Descriptor instead.
+func (m *HandleRequest) Reset()         { *m = HandleRequest{} }
+func (m *HandleRequest) String() string { return proto.CompactTextString(m) }
+func (*HandleRequest) ProtoMessage()    {}
 func (*HandleRequest) Descriptor() ([]byte, []int) {
-	return file_github_com_micro_go_micro_server_proto_server_proto_rawDescGZIP(), []int{0}
+	return fileDescriptor_1959cecd4d1121a1, []int{0}
 }
 
-func (x *HandleRequest) GetService() string {
-	if x != nil {
-		return x.Service
+func (m *HandleRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_HandleRequest.Unmarshal(m, b)
+}
+func (m *HandleRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_HandleRequest.Marshal(b, m, deterministic)
+}
+func (m *HandleRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_HandleRequest.Merge(m, src)
+}
+func (m *HandleRequest) XXX_Size() int {
+	return xxx_messageInfo_HandleRequest.Size(m)
+}
+func (m *HandleRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_HandleRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_HandleRequest proto.InternalMessageInfo
+
+func (m *HandleRequest) GetService() string {
+	if m != nil {
+		return m.Service
 	}
 	return ""
 }
 
-func (x *HandleRequest) GetEndpoint() string {
-	if x != nil {
-		return x.Endpoint
+func (m *HandleRequest) GetEndpoint() string {
+	if m != nil {
+		return m.Endpoint
 	}
 	return ""
 }
 
-func (x *HandleRequest) GetProtocol() string {
-	if x != nil {
-		return x.Protocol
+func (m *HandleRequest) GetProtocol() string {
+	if m != nil {
+		return m.Protocol
 	}
 	return ""
 }
 
 type HandleResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *HandleResponse) Reset() {
-	*x = HandleResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_github_com_micro_go_micro_server_proto_server_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *HandleResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*HandleResponse) ProtoMessage() {}
-
-func (x *HandleResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_github_com_micro_go_micro_server_proto_server_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use HandleResponse.ProtoReflect.Descriptor instead.
+func (m *HandleResponse) Reset()         { *m = HandleResponse{} }
+func (m *HandleResponse) String() string { return proto.CompactTextString(m) }
+func (*HandleResponse) ProtoMessage()    {}
 func (*HandleResponse) Descriptor() ([]byte, []int) {
-	return file_github_com_micro_go_micro_server_proto_server_proto_rawDescGZIP(), []int{1}
+	return fileDescriptor_1959cecd4d1121a1, []int{1}
 }
 
+func (m *HandleResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_HandleResponse.Unmarshal(m, b)
+}
+func (m *HandleResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_HandleResponse.Marshal(b, m, deterministic)
+}
+func (m *HandleResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_HandleResponse.Merge(m, src)
+}
+func (m *HandleResponse) XXX_Size() int {
+	return xxx_messageInfo_HandleResponse.Size(m)
+}
+func (m *HandleResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_HandleResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_HandleResponse proto.InternalMessageInfo
+
 type SubscribeRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Topic string `protobuf:"bytes,1,opt,name=topic,proto3" json:"topic,omitempty"`
+	Topic                string   `protobuf:"bytes,1,opt,name=topic,proto3" json:"topic,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *SubscribeRequest) Reset() {
-	*x = SubscribeRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_github_com_micro_go_micro_server_proto_server_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *SubscribeRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*SubscribeRequest) ProtoMessage() {}
-
-func (x *SubscribeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_github_com_micro_go_micro_server_proto_server_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use SubscribeRequest.ProtoReflect.Descriptor instead.
+func (m *SubscribeRequest) Reset()         { *m = SubscribeRequest{} }
+func (m *SubscribeRequest) String() string { return proto.CompactTextString(m) }
+func (*SubscribeRequest) ProtoMessage()    {}
 func (*SubscribeRequest) Descriptor() ([]byte, []int) {
-	return file_github_com_micro_go_micro_server_proto_server_proto_rawDescGZIP(), []int{2}
+	return fileDescriptor_1959cecd4d1121a1, []int{2}
 }
 
-func (x *SubscribeRequest) GetTopic() string {
-	if x != nil {
-		return x.Topic
+func (m *SubscribeRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SubscribeRequest.Unmarshal(m, b)
+}
+func (m *SubscribeRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SubscribeRequest.Marshal(b, m, deterministic)
+}
+func (m *SubscribeRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SubscribeRequest.Merge(m, src)
+}
+func (m *SubscribeRequest) XXX_Size() int {
+	return xxx_messageInfo_SubscribeRequest.Size(m)
+}
+func (m *SubscribeRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_SubscribeRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SubscribeRequest proto.InternalMessageInfo
+
+func (m *SubscribeRequest) GetTopic() string {
+	if m != nil {
+		return m.Topic
 	}
 	return ""
 }
 
 type SubscribeResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *SubscribeResponse) Reset() {
-	*x = SubscribeResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_github_com_micro_go_micro_server_proto_server_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *SubscribeResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*SubscribeResponse) ProtoMessage() {}
-
-func (x *SubscribeResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_github_com_micro_go_micro_server_proto_server_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use SubscribeResponse.ProtoReflect.Descriptor instead.
+func (m *SubscribeResponse) Reset()         { *m = SubscribeResponse{} }
+func (m *SubscribeResponse) String() string { return proto.CompactTextString(m) }
+func (*SubscribeResponse) ProtoMessage()    {}
 func (*SubscribeResponse) Descriptor() ([]byte, []int) {
-	return file_github_com_micro_go_micro_server_proto_server_proto_rawDescGZIP(), []int{3}
+	return fileDescriptor_1959cecd4d1121a1, []int{3}
 }
 
-var File_github_com_micro_go_micro_server_proto_server_proto protoreflect.FileDescriptor
-
-var file_github_com_micro_go_micro_server_proto_server_proto_rawDesc = []byte{
-	0x0a, 0x33, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x6d, 0x69, 0x63,
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-	0x72, 0x2e, 0x53, 0x75, 0x62, 0x73, 0x63, 0x72, 0x69, 0x62, 0x65, 0x52, 0x65, 0x71, 0x75, 0x65,
-	0x73, 0x74, 0x1a, 0x22, 0x2e, 0x67, 0x6f, 0x2e, 0x6d, 0x69, 0x63, 0x72, 0x6f, 0x2e, 0x73, 0x65,
-	0x72, 0x76, 0x65, 0x72, 0x2e, 0x53, 0x75, 0x62, 0x73, 0x63, 0x72, 0x69, 0x62, 0x65, 0x52, 0x65,
-	0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+func (m *SubscribeResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SubscribeResponse.Unmarshal(m, b)
+}
+func (m *SubscribeResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SubscribeResponse.Marshal(b, m, deterministic)
+}
+func (m *SubscribeResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SubscribeResponse.Merge(m, src)
+}
+func (m *SubscribeResponse) XXX_Size() int {
+	return xxx_messageInfo_SubscribeResponse.Size(m)
+}
+func (m *SubscribeResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_SubscribeResponse.DiscardUnknown(m)
 }
 
-var (
-	file_github_com_micro_go_micro_server_proto_server_proto_rawDescOnce sync.Once
-	file_github_com_micro_go_micro_server_proto_server_proto_rawDescData = file_github_com_micro_go_micro_server_proto_server_proto_rawDesc
-)
+var xxx_messageInfo_SubscribeResponse proto.InternalMessageInfo
 
-func file_github_com_micro_go_micro_server_proto_server_proto_rawDescGZIP() []byte {
-	file_github_com_micro_go_micro_server_proto_server_proto_rawDescOnce.Do(func() {
-		file_github_com_micro_go_micro_server_proto_server_proto_rawDescData = protoimpl.X.CompressGZIP(file_github_com_micro_go_micro_server_proto_server_proto_rawDescData)
-	})
-	return file_github_com_micro_go_micro_server_proto_server_proto_rawDescData
+func init() {
+	proto.RegisterType((*HandleRequest)(nil), "go.micro.server.HandleRequest")
+	proto.RegisterType((*HandleResponse)(nil), "go.micro.server.HandleResponse")
+	proto.RegisterType((*SubscribeRequest)(nil), "go.micro.server.SubscribeRequest")
+	proto.RegisterType((*SubscribeResponse)(nil), "go.micro.server.SubscribeResponse")
 }
 
-var file_github_com_micro_go_micro_server_proto_server_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
-var file_github_com_micro_go_micro_server_proto_server_proto_goTypes = []interface{}{
-	(*HandleRequest)(nil),     // 0: go.micro.server.HandleRequest
-	(*HandleResponse)(nil),    // 1: go.micro.server.HandleResponse
-	(*SubscribeRequest)(nil),  // 2: go.micro.server.SubscribeRequest
-	(*SubscribeResponse)(nil), // 3: go.micro.server.SubscribeResponse
-}
-var file_github_com_micro_go_micro_server_proto_server_proto_depIdxs = []int32{
-	0, // 0: go.micro.server.Server.Handle:input_type -> go.micro.server.HandleRequest
-	2, // 1: go.micro.server.Server.Subscribe:input_type -> go.micro.server.SubscribeRequest
-	1, // 2: go.micro.server.Server.Handle:output_type -> go.micro.server.HandleResponse
-	3, // 3: go.micro.server.Server.Subscribe:output_type -> go.micro.server.SubscribeResponse
-	2, // [2:4] is the sub-list for method output_type
-	0, // [0:2] is the sub-list for method input_type
-	0, // [0:0] is the sub-list for extension type_name
-	0, // [0:0] is the sub-list for extension extendee
-	0, // [0:0] is the sub-list for field type_name
+func init() { proto.RegisterFile("server/proto/server.proto", fileDescriptor_1959cecd4d1121a1) }
+
+var fileDescriptor_1959cecd4d1121a1 = []byte{
+	// 223 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x92, 0x2c, 0x4e, 0x2d, 0x2a,
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+	0x10, 0x8e, 0x92, 0x30, 0x97, 0x20, 0x92, 0x4a, 0x88, 0x76, 0xa3, 0xd5, 0x8c, 0x5c, 0x6c, 0xc1,
+	0x60, 0xe7, 0x0b, 0x79, 0x73, 0xb1, 0x41, 0xcc, 0x16, 0x92, 0xd3, 0x43, 0xf3, 0x9a, 0x1e, 0x8a,
+	0xbf, 0xa4, 0xe4, 0x71, 0xca, 0x43, 0x1d, 0xc5, 0x20, 0x14, 0xc2, 0xc5, 0x09, 0xb7, 0x4c, 0x48,
+	0x11, 0x43, 0x3d, 0xba, 0x93, 0xa5, 0x94, 0xf0, 0x29, 0x81, 0x99, 0x9a, 0xc4, 0x06, 0x0e, 0x08,
+	0x63, 0x40, 0x00, 0x00, 0x00, 0xff, 0xff, 0xa4, 0x3f, 0x79, 0x80, 0x96, 0x01, 0x00, 0x00,
 }
 
-func init() { file_github_com_micro_go_micro_server_proto_server_proto_init() }
-func file_github_com_micro_go_micro_server_proto_server_proto_init() {
-	if File_github_com_micro_go_micro_server_proto_server_proto != nil {
-		return
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ grpc.ClientConn
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+const _ = grpc.SupportPackageIsVersion4
+
+// ServerClient is the client API for Server service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
+type ServerClient interface {
+	Handle(ctx context.Context, in *HandleRequest, opts ...grpc.CallOption) (*HandleResponse, error)
+	Subscribe(ctx context.Context, in *SubscribeRequest, opts ...grpc.CallOption) (*SubscribeResponse, error)
+}
+
+type serverClient struct {
+	cc *grpc.ClientConn
+}
+
+func NewServerClient(cc *grpc.ClientConn) ServerClient {
+	return &serverClient{cc}
+}
+
+func (c *serverClient) Handle(ctx context.Context, in *HandleRequest, opts ...grpc.CallOption) (*HandleResponse, error) {
+	out := new(HandleResponse)
+	err := c.cc.Invoke(ctx, "/go.micro.server.Server/Handle", in, out, opts...)
+	if err != nil {
+		return nil, err
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_github_com_micro_go_micro_server_proto_server_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*HandleRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_github_com_micro_go_micro_server_proto_server_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*HandleResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_github_com_micro_go_micro_server_proto_server_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SubscribeRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_github_com_micro_go_micro_server_proto_server_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SubscribeResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
+	return out, nil
+}
+
+func (c *serverClient) Subscribe(ctx context.Context, in *SubscribeRequest, opts ...grpc.CallOption) (*SubscribeResponse, error) {
+	out := new(SubscribeResponse)
+	err := c.cc.Invoke(ctx, "/go.micro.server.Server/Subscribe", in, out, opts...)
+	if err != nil {
+		return nil, err
 	}
-	type x struct{}
-	out := protoimpl.TypeBuilder{
-		File: protoimpl.DescBuilder{
-			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_github_com_micro_go_micro_server_proto_server_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   4,
-			NumExtensions: 0,
-			NumServices:   1,
+	return out, nil
+}
+
+// ServerServer is the server API for Server service.
+type ServerServer interface {
+	Handle(context.Context, *HandleRequest) (*HandleResponse, error)
+	Subscribe(context.Context, *SubscribeRequest) (*SubscribeResponse, error)
+}
+
+// UnimplementedServerServer can be embedded to have forward compatible implementations.
+type UnimplementedServerServer struct {
+}
+
+func (*UnimplementedServerServer) Handle(ctx context.Context, req *HandleRequest) (*HandleResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Handle not implemented")
+}
+func (*UnimplementedServerServer) Subscribe(ctx context.Context, req *SubscribeRequest) (*SubscribeResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Subscribe not implemented")
+}
+
+func RegisterServerServer(s *grpc.Server, srv ServerServer) {
+	s.RegisterService(&_Server_serviceDesc, srv)
+}
+
+func _Server_Handle_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(HandleRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ServerServer).Handle(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/go.micro.server.Server/Handle",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ServerServer).Handle(ctx, req.(*HandleRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Server_Subscribe_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(SubscribeRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ServerServer).Subscribe(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/go.micro.server.Server/Subscribe",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ServerServer).Subscribe(ctx, req.(*SubscribeRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+var _Server_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "go.micro.server.Server",
+	HandlerType: (*ServerServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Handle",
+			Handler:    _Server_Handle_Handler,
 		},
-		GoTypes:           file_github_com_micro_go_micro_server_proto_server_proto_goTypes,
-		DependencyIndexes: file_github_com_micro_go_micro_server_proto_server_proto_depIdxs,
-		MessageInfos:      file_github_com_micro_go_micro_server_proto_server_proto_msgTypes,
-	}.Build()
-	File_github_com_micro_go_micro_server_proto_server_proto = out.File
-	file_github_com_micro_go_micro_server_proto_server_proto_rawDesc = nil
-	file_github_com_micro_go_micro_server_proto_server_proto_goTypes = nil
-	file_github_com_micro_go_micro_server_proto_server_proto_depIdxs = nil
+		{
+			MethodName: "Subscribe",
+			Handler:    _Server_Subscribe_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "server/proto/server.proto",
 }
diff --git a/server/proto/server.pb.micro.go b/server/proto/server.pb.micro.go
index 61ba016f..5d84eda9 100644
--- a/server/proto/server.pb.micro.go
+++ b/server/proto/server.pb.micro.go
@@ -1,5 +1,5 @@
 // Code generated by protoc-gen-micro. DO NOT EDIT.
-// source: github.com/micro/go-micro/server/proto/server.proto
+// source: server/proto/server.proto
 
 package go_micro_server
 
diff --git a/service.go b/service.go
index da13c8cd..4d793920 100644
--- a/service.go
+++ b/service.go
@@ -35,14 +35,14 @@ func newService(opts ...Option) Service {
 	// service name
 	serviceName := options.Server.Options().Name
 
-	// authFn returns the auth, we pass as a function since auth
-	// has not yet been set at this point.
+	// we pass functions to the wrappers since the values can change during initialisation
 	authFn := func() auth.Auth { return options.Server.Options().Auth }
+	cacheFn := func() *client.Cache { return options.Client.Options().Cache }
 
 	// wrap client to inject From-Service header on any calls
 	options.Client = wrapper.FromService(serviceName, options.Client)
 	options.Client = wrapper.TraceCall(serviceName, trace.DefaultTracer, options.Client)
-	options.Client = wrapper.CacheClient(options.Client)
+	options.Client = wrapper.CacheClient(cacheFn, options.Client)
 	options.Client = wrapper.AuthClient(authFn, options.Client)
 
 	// wrap the server to provide handler stats
@@ -184,7 +184,7 @@ func (s *service) Run() error {
 	// register the debug handler
 	s.opts.Server.Handle(
 		s.opts.Server.NewHandler(
-			handler.NewHandler(),
+			handler.NewHandler(s.opts.Client),
 			server.InternalHandler(true),
 		),
 	)
diff --git a/util/file/proto/file.pb.go b/util/file/proto/file.pb.go
index 3e2e7799..826ca43b 100644
--- a/util/file/proto/file.pb.go
+++ b/util/file/proto/file.pb.go
@@ -1,968 +1,854 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
-// versions:
-// 	protoc-gen-go v1.22.0
-// 	protoc        v3.6.1
-// source: micro/go-micro/util/file/proto/file.proto
+// source: util/file/proto/file.proto
 
 package go_micro_server
 
 import (
+	context "context"
+	fmt "fmt"
 	proto "github.com/golang/protobuf/proto"
-	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	reflect "reflect"
-	sync "sync"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+	math "math"
 )
 
-const (
-	// Verify that this generated code is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
-	// Verify that runtime/protoimpl is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
-)
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
 
-// This is a compile-time assertion that a sufficiently up-to-date version
-// of the legacy proto package is being used.
-const _ = proto.ProtoPackageIsVersion4
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
 
 type OpenRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Filename string `protobuf:"bytes,1,opt,name=filename,proto3" json:"filename,omitempty"`
-	Truncate bool   `protobuf:"varint,2,opt,name=truncate,proto3" json:"truncate,omitempty"`
+	Filename             string   `protobuf:"bytes,1,opt,name=filename,proto3" json:"filename,omitempty"`
+	Truncate             bool     `protobuf:"varint,2,opt,name=truncate,proto3" json:"truncate,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *OpenRequest) Reset() {
-	*x = OpenRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *OpenRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*OpenRequest) ProtoMessage() {}
-
-func (x *OpenRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use OpenRequest.ProtoReflect.Descriptor instead.
+func (m *OpenRequest) Reset()         { *m = OpenRequest{} }
+func (m *OpenRequest) String() string { return proto.CompactTextString(m) }
+func (*OpenRequest) ProtoMessage()    {}
 func (*OpenRequest) Descriptor() ([]byte, []int) {
-	return file_micro_go_micro_util_file_proto_file_proto_rawDescGZIP(), []int{0}
+	return fileDescriptor_c90a6c4a93f92bf4, []int{0}
 }
 
-func (x *OpenRequest) GetFilename() string {
-	if x != nil {
-		return x.Filename
+func (m *OpenRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_OpenRequest.Unmarshal(m, b)
+}
+func (m *OpenRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_OpenRequest.Marshal(b, m, deterministic)
+}
+func (m *OpenRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_OpenRequest.Merge(m, src)
+}
+func (m *OpenRequest) XXX_Size() int {
+	return xxx_messageInfo_OpenRequest.Size(m)
+}
+func (m *OpenRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_OpenRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_OpenRequest proto.InternalMessageInfo
+
+func (m *OpenRequest) GetFilename() string {
+	if m != nil {
+		return m.Filename
 	}
 	return ""
 }
 
-func (x *OpenRequest) GetTruncate() bool {
-	if x != nil {
-		return x.Truncate
+func (m *OpenRequest) GetTruncate() bool {
+	if m != nil {
+		return m.Truncate
 	}
 	return false
 }
 
 type OpenResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Id     int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
-	Result bool  `protobuf:"varint,2,opt,name=result,proto3" json:"result,omitempty"`
+	Id                   int64    `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Result               bool     `protobuf:"varint,2,opt,name=result,proto3" json:"result,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *OpenResponse) Reset() {
-	*x = OpenResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *OpenResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*OpenResponse) ProtoMessage() {}
-
-func (x *OpenResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use OpenResponse.ProtoReflect.Descriptor instead.
+func (m *OpenResponse) Reset()         { *m = OpenResponse{} }
+func (m *OpenResponse) String() string { return proto.CompactTextString(m) }
+func (*OpenResponse) ProtoMessage()    {}
 func (*OpenResponse) Descriptor() ([]byte, []int) {
-	return file_micro_go_micro_util_file_proto_file_proto_rawDescGZIP(), []int{1}
+	return fileDescriptor_c90a6c4a93f92bf4, []int{1}
 }
 
-func (x *OpenResponse) GetId() int64 {
-	if x != nil {
-		return x.Id
+func (m *OpenResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_OpenResponse.Unmarshal(m, b)
+}
+func (m *OpenResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_OpenResponse.Marshal(b, m, deterministic)
+}
+func (m *OpenResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_OpenResponse.Merge(m, src)
+}
+func (m *OpenResponse) XXX_Size() int {
+	return xxx_messageInfo_OpenResponse.Size(m)
+}
+func (m *OpenResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_OpenResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_OpenResponse proto.InternalMessageInfo
+
+func (m *OpenResponse) GetId() int64 {
+	if m != nil {
+		return m.Id
 	}
 	return 0
 }
 
-func (x *OpenResponse) GetResult() bool {
-	if x != nil {
-		return x.Result
+func (m *OpenResponse) GetResult() bool {
+	if m != nil {
+		return m.Result
 	}
 	return false
 }
 
 type CloseRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Id int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Id                   int64    `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *CloseRequest) Reset() {
-	*x = CloseRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *CloseRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*CloseRequest) ProtoMessage() {}
-
-func (x *CloseRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use CloseRequest.ProtoReflect.Descriptor instead.
+func (m *CloseRequest) Reset()         { *m = CloseRequest{} }
+func (m *CloseRequest) String() string { return proto.CompactTextString(m) }
+func (*CloseRequest) ProtoMessage()    {}
 func (*CloseRequest) Descriptor() ([]byte, []int) {
-	return file_micro_go_micro_util_file_proto_file_proto_rawDescGZIP(), []int{2}
+	return fileDescriptor_c90a6c4a93f92bf4, []int{2}
 }
 
-func (x *CloseRequest) GetId() int64 {
-	if x != nil {
-		return x.Id
+func (m *CloseRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_CloseRequest.Unmarshal(m, b)
+}
+func (m *CloseRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_CloseRequest.Marshal(b, m, deterministic)
+}
+func (m *CloseRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_CloseRequest.Merge(m, src)
+}
+func (m *CloseRequest) XXX_Size() int {
+	return xxx_messageInfo_CloseRequest.Size(m)
+}
+func (m *CloseRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_CloseRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_CloseRequest proto.InternalMessageInfo
+
+func (m *CloseRequest) GetId() int64 {
+	if m != nil {
+		return m.Id
 	}
 	return 0
 }
 
 type CloseResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *CloseResponse) Reset() {
-	*x = CloseResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *CloseResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*CloseResponse) ProtoMessage() {}
-
-func (x *CloseResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use CloseResponse.ProtoReflect.Descriptor instead.
+func (m *CloseResponse) Reset()         { *m = CloseResponse{} }
+func (m *CloseResponse) String() string { return proto.CompactTextString(m) }
+func (*CloseResponse) ProtoMessage()    {}
 func (*CloseResponse) Descriptor() ([]byte, []int) {
-	return file_micro_go_micro_util_file_proto_file_proto_rawDescGZIP(), []int{3}
+	return fileDescriptor_c90a6c4a93f92bf4, []int{3}
 }
 
+func (m *CloseResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_CloseResponse.Unmarshal(m, b)
+}
+func (m *CloseResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_CloseResponse.Marshal(b, m, deterministic)
+}
+func (m *CloseResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_CloseResponse.Merge(m, src)
+}
+func (m *CloseResponse) XXX_Size() int {
+	return xxx_messageInfo_CloseResponse.Size(m)
+}
+func (m *CloseResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_CloseResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_CloseResponse proto.InternalMessageInfo
+
 type StatRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Filename string `protobuf:"bytes,1,opt,name=filename,proto3" json:"filename,omitempty"`
+	Filename             string   `protobuf:"bytes,1,opt,name=filename,proto3" json:"filename,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *StatRequest) Reset() {
-	*x = StatRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[4]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *StatRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*StatRequest) ProtoMessage() {}
-
-func (x *StatRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[4]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use StatRequest.ProtoReflect.Descriptor instead.
+func (m *StatRequest) Reset()         { *m = StatRequest{} }
+func (m *StatRequest) String() string { return proto.CompactTextString(m) }
+func (*StatRequest) ProtoMessage()    {}
 func (*StatRequest) Descriptor() ([]byte, []int) {
-	return file_micro_go_micro_util_file_proto_file_proto_rawDescGZIP(), []int{4}
+	return fileDescriptor_c90a6c4a93f92bf4, []int{4}
 }
 
-func (x *StatRequest) GetFilename() string {
-	if x != nil {
-		return x.Filename
+func (m *StatRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_StatRequest.Unmarshal(m, b)
+}
+func (m *StatRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_StatRequest.Marshal(b, m, deterministic)
+}
+func (m *StatRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_StatRequest.Merge(m, src)
+}
+func (m *StatRequest) XXX_Size() int {
+	return xxx_messageInfo_StatRequest.Size(m)
+}
+func (m *StatRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_StatRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_StatRequest proto.InternalMessageInfo
+
+func (m *StatRequest) GetFilename() string {
+	if m != nil {
+		return m.Filename
 	}
 	return ""
 }
 
 type StatResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Type         string `protobuf:"bytes,1,opt,name=type,proto3" json:"type,omitempty"`
-	Size         int64  `protobuf:"varint,2,opt,name=size,proto3" json:"size,omitempty"`
-	LastModified int64  `protobuf:"varint,3,opt,name=last_modified,json=lastModified,proto3" json:"last_modified,omitempty"`
+	Type                 string   `protobuf:"bytes,1,opt,name=type,proto3" json:"type,omitempty"`
+	Size                 int64    `protobuf:"varint,2,opt,name=size,proto3" json:"size,omitempty"`
+	LastModified         int64    `protobuf:"varint,3,opt,name=last_modified,json=lastModified,proto3" json:"last_modified,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *StatResponse) Reset() {
-	*x = StatResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *StatResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*StatResponse) ProtoMessage() {}
-
-func (x *StatResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[5]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use StatResponse.ProtoReflect.Descriptor instead.
+func (m *StatResponse) Reset()         { *m = StatResponse{} }
+func (m *StatResponse) String() string { return proto.CompactTextString(m) }
+func (*StatResponse) ProtoMessage()    {}
 func (*StatResponse) Descriptor() ([]byte, []int) {
-	return file_micro_go_micro_util_file_proto_file_proto_rawDescGZIP(), []int{5}
+	return fileDescriptor_c90a6c4a93f92bf4, []int{5}
 }
 
-func (x *StatResponse) GetType() string {
-	if x != nil {
-		return x.Type
+func (m *StatResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_StatResponse.Unmarshal(m, b)
+}
+func (m *StatResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_StatResponse.Marshal(b, m, deterministic)
+}
+func (m *StatResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_StatResponse.Merge(m, src)
+}
+func (m *StatResponse) XXX_Size() int {
+	return xxx_messageInfo_StatResponse.Size(m)
+}
+func (m *StatResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_StatResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_StatResponse proto.InternalMessageInfo
+
+func (m *StatResponse) GetType() string {
+	if m != nil {
+		return m.Type
 	}
 	return ""
 }
 
-func (x *StatResponse) GetSize() int64 {
-	if x != nil {
-		return x.Size
+func (m *StatResponse) GetSize() int64 {
+	if m != nil {
+		return m.Size
 	}
 	return 0
 }
 
-func (x *StatResponse) GetLastModified() int64 {
-	if x != nil {
-		return x.LastModified
+func (m *StatResponse) GetLastModified() int64 {
+	if m != nil {
+		return m.LastModified
 	}
 	return 0
 }
 
 type ReadRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Id     int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
-	Offset int64 `protobuf:"varint,2,opt,name=offset,proto3" json:"offset,omitempty"`
-	Size   int64 `protobuf:"varint,3,opt,name=size,proto3" json:"size,omitempty"`
+	Id                   int64    `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Offset               int64    `protobuf:"varint,2,opt,name=offset,proto3" json:"offset,omitempty"`
+	Size                 int64    `protobuf:"varint,3,opt,name=size,proto3" json:"size,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *ReadRequest) Reset() {
-	*x = ReadRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[6]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *ReadRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*ReadRequest) ProtoMessage() {}
-
-func (x *ReadRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[6]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use ReadRequest.ProtoReflect.Descriptor instead.
+func (m *ReadRequest) Reset()         { *m = ReadRequest{} }
+func (m *ReadRequest) String() string { return proto.CompactTextString(m) }
+func (*ReadRequest) ProtoMessage()    {}
 func (*ReadRequest) Descriptor() ([]byte, []int) {
-	return file_micro_go_micro_util_file_proto_file_proto_rawDescGZIP(), []int{6}
+	return fileDescriptor_c90a6c4a93f92bf4, []int{6}
 }
 
-func (x *ReadRequest) GetId() int64 {
-	if x != nil {
-		return x.Id
+func (m *ReadRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ReadRequest.Unmarshal(m, b)
+}
+func (m *ReadRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ReadRequest.Marshal(b, m, deterministic)
+}
+func (m *ReadRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ReadRequest.Merge(m, src)
+}
+func (m *ReadRequest) XXX_Size() int {
+	return xxx_messageInfo_ReadRequest.Size(m)
+}
+func (m *ReadRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_ReadRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ReadRequest proto.InternalMessageInfo
+
+func (m *ReadRequest) GetId() int64 {
+	if m != nil {
+		return m.Id
 	}
 	return 0
 }
 
-func (x *ReadRequest) GetOffset() int64 {
-	if x != nil {
-		return x.Offset
+func (m *ReadRequest) GetOffset() int64 {
+	if m != nil {
+		return m.Offset
 	}
 	return 0
 }
 
-func (x *ReadRequest) GetSize() int64 {
-	if x != nil {
-		return x.Size
+func (m *ReadRequest) GetSize() int64 {
+	if m != nil {
+		return m.Size
 	}
 	return 0
 }
 
 type ReadResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Size int64  `protobuf:"varint,1,opt,name=size,proto3" json:"size,omitempty"`
-	Data []byte `protobuf:"bytes,2,opt,name=data,proto3" json:"data,omitempty"`
-	Eof  bool   `protobuf:"varint,3,opt,name=eof,proto3" json:"eof,omitempty"`
+	Size                 int64    `protobuf:"varint,1,opt,name=size,proto3" json:"size,omitempty"`
+	Data                 []byte   `protobuf:"bytes,2,opt,name=data,proto3" json:"data,omitempty"`
+	Eof                  bool     `protobuf:"varint,3,opt,name=eof,proto3" json:"eof,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *ReadResponse) Reset() {
-	*x = ReadResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[7]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *ReadResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*ReadResponse) ProtoMessage() {}
-
-func (x *ReadResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[7]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use ReadResponse.ProtoReflect.Descriptor instead.
+func (m *ReadResponse) Reset()         { *m = ReadResponse{} }
+func (m *ReadResponse) String() string { return proto.CompactTextString(m) }
+func (*ReadResponse) ProtoMessage()    {}
 func (*ReadResponse) Descriptor() ([]byte, []int) {
-	return file_micro_go_micro_util_file_proto_file_proto_rawDescGZIP(), []int{7}
+	return fileDescriptor_c90a6c4a93f92bf4, []int{7}
 }
 
-func (x *ReadResponse) GetSize() int64 {
-	if x != nil {
-		return x.Size
+func (m *ReadResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ReadResponse.Unmarshal(m, b)
+}
+func (m *ReadResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ReadResponse.Marshal(b, m, deterministic)
+}
+func (m *ReadResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ReadResponse.Merge(m, src)
+}
+func (m *ReadResponse) XXX_Size() int {
+	return xxx_messageInfo_ReadResponse.Size(m)
+}
+func (m *ReadResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_ReadResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ReadResponse proto.InternalMessageInfo
+
+func (m *ReadResponse) GetSize() int64 {
+	if m != nil {
+		return m.Size
 	}
 	return 0
 }
 
-func (x *ReadResponse) GetData() []byte {
-	if x != nil {
-		return x.Data
+func (m *ReadResponse) GetData() []byte {
+	if m != nil {
+		return m.Data
 	}
 	return nil
 }
 
-func (x *ReadResponse) GetEof() bool {
-	if x != nil {
-		return x.Eof
+func (m *ReadResponse) GetEof() bool {
+	if m != nil {
+		return m.Eof
 	}
 	return false
 }
 
 type GetRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Id      int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
-	BlockId int64 `protobuf:"varint,2,opt,name=block_id,json=blockId,proto3" json:"block_id,omitempty"`
+	Id                   int64    `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	BlockId              int64    `protobuf:"varint,2,opt,name=block_id,json=blockId,proto3" json:"block_id,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *GetRequest) Reset() {
-	*x = GetRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[8]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *GetRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*GetRequest) ProtoMessage() {}
-
-func (x *GetRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[8]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use GetRequest.ProtoReflect.Descriptor instead.
+func (m *GetRequest) Reset()         { *m = GetRequest{} }
+func (m *GetRequest) String() string { return proto.CompactTextString(m) }
+func (*GetRequest) ProtoMessage()    {}
 func (*GetRequest) Descriptor() ([]byte, []int) {
-	return file_micro_go_micro_util_file_proto_file_proto_rawDescGZIP(), []int{8}
+	return fileDescriptor_c90a6c4a93f92bf4, []int{8}
 }
 
-func (x *GetRequest) GetId() int64 {
-	if x != nil {
-		return x.Id
+func (m *GetRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GetRequest.Unmarshal(m, b)
+}
+func (m *GetRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GetRequest.Marshal(b, m, deterministic)
+}
+func (m *GetRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GetRequest.Merge(m, src)
+}
+func (m *GetRequest) XXX_Size() int {
+	return xxx_messageInfo_GetRequest.Size(m)
+}
+func (m *GetRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_GetRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GetRequest proto.InternalMessageInfo
+
+func (m *GetRequest) GetId() int64 {
+	if m != nil {
+		return m.Id
 	}
 	return 0
 }
 
-func (x *GetRequest) GetBlockId() int64 {
-	if x != nil {
-		return x.BlockId
+func (m *GetRequest) GetBlockId() int64 {
+	if m != nil {
+		return m.BlockId
 	}
 	return 0
 }
 
 type GetResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	BlockId int64  `protobuf:"varint,1,opt,name=block_id,json=blockId,proto3" json:"block_id,omitempty"`
-	Size    int64  `protobuf:"varint,2,opt,name=size,proto3" json:"size,omitempty"`
-	Data    []byte `protobuf:"bytes,3,opt,name=data,proto3" json:"data,omitempty"`
+	BlockId              int64    `protobuf:"varint,1,opt,name=block_id,json=blockId,proto3" json:"block_id,omitempty"`
+	Size                 int64    `protobuf:"varint,2,opt,name=size,proto3" json:"size,omitempty"`
+	Data                 []byte   `protobuf:"bytes,3,opt,name=data,proto3" json:"data,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *GetResponse) Reset() {
-	*x = GetResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[9]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *GetResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*GetResponse) ProtoMessage() {}
-
-func (x *GetResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[9]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use GetResponse.ProtoReflect.Descriptor instead.
+func (m *GetResponse) Reset()         { *m = GetResponse{} }
+func (m *GetResponse) String() string { return proto.CompactTextString(m) }
+func (*GetResponse) ProtoMessage()    {}
 func (*GetResponse) Descriptor() ([]byte, []int) {
-	return file_micro_go_micro_util_file_proto_file_proto_rawDescGZIP(), []int{9}
+	return fileDescriptor_c90a6c4a93f92bf4, []int{9}
 }
 
-func (x *GetResponse) GetBlockId() int64 {
-	if x != nil {
-		return x.BlockId
+func (m *GetResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GetResponse.Unmarshal(m, b)
+}
+func (m *GetResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GetResponse.Marshal(b, m, deterministic)
+}
+func (m *GetResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GetResponse.Merge(m, src)
+}
+func (m *GetResponse) XXX_Size() int {
+	return xxx_messageInfo_GetResponse.Size(m)
+}
+func (m *GetResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_GetResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GetResponse proto.InternalMessageInfo
+
+func (m *GetResponse) GetBlockId() int64 {
+	if m != nil {
+		return m.BlockId
 	}
 	return 0
 }
 
-func (x *GetResponse) GetSize() int64 {
-	if x != nil {
-		return x.Size
+func (m *GetResponse) GetSize() int64 {
+	if m != nil {
+		return m.Size
 	}
 	return 0
 }
 
-func (x *GetResponse) GetData() []byte {
-	if x != nil {
-		return x.Data
+func (m *GetResponse) GetData() []byte {
+	if m != nil {
+		return m.Data
 	}
 	return nil
 }
 
 type WriteRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Id     int64  `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
-	Offset int64  `protobuf:"varint,2,opt,name=offset,proto3" json:"offset,omitempty"`
-	Data   []byte `protobuf:"bytes,3,opt,name=data,proto3" json:"data,omitempty"`
+	Id                   int64    `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+	Offset               int64    `protobuf:"varint,2,opt,name=offset,proto3" json:"offset,omitempty"`
+	Data                 []byte   `protobuf:"bytes,3,opt,name=data,proto3" json:"data,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *WriteRequest) Reset() {
-	*x = WriteRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[10]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *WriteRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*WriteRequest) ProtoMessage() {}
-
-func (x *WriteRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[10]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use WriteRequest.ProtoReflect.Descriptor instead.
+func (m *WriteRequest) Reset()         { *m = WriteRequest{} }
+func (m *WriteRequest) String() string { return proto.CompactTextString(m) }
+func (*WriteRequest) ProtoMessage()    {}
 func (*WriteRequest) Descriptor() ([]byte, []int) {
-	return file_micro_go_micro_util_file_proto_file_proto_rawDescGZIP(), []int{10}
+	return fileDescriptor_c90a6c4a93f92bf4, []int{10}
 }
 
-func (x *WriteRequest) GetId() int64 {
-	if x != nil {
-		return x.Id
+func (m *WriteRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_WriteRequest.Unmarshal(m, b)
+}
+func (m *WriteRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_WriteRequest.Marshal(b, m, deterministic)
+}
+func (m *WriteRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_WriteRequest.Merge(m, src)
+}
+func (m *WriteRequest) XXX_Size() int {
+	return xxx_messageInfo_WriteRequest.Size(m)
+}
+func (m *WriteRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_WriteRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_WriteRequest proto.InternalMessageInfo
+
+func (m *WriteRequest) GetId() int64 {
+	if m != nil {
+		return m.Id
 	}
 	return 0
 }
 
-func (x *WriteRequest) GetOffset() int64 {
-	if x != nil {
-		return x.Offset
+func (m *WriteRequest) GetOffset() int64 {
+	if m != nil {
+		return m.Offset
 	}
 	return 0
 }
 
-func (x *WriteRequest) GetData() []byte {
-	if x != nil {
-		return x.Data
+func (m *WriteRequest) GetData() []byte {
+	if m != nil {
+		return m.Data
 	}
 	return nil
 }
 
 type WriteResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (x *WriteResponse) Reset() {
-	*x = WriteResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[11]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *WriteResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*WriteResponse) ProtoMessage() {}
-
-func (x *WriteResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_micro_go_micro_util_file_proto_file_proto_msgTypes[11]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use WriteResponse.ProtoReflect.Descriptor instead.
+func (m *WriteResponse) Reset()         { *m = WriteResponse{} }
+func (m *WriteResponse) String() string { return proto.CompactTextString(m) }
+func (*WriteResponse) ProtoMessage()    {}
 func (*WriteResponse) Descriptor() ([]byte, []int) {
-	return file_micro_go_micro_util_file_proto_file_proto_rawDescGZIP(), []int{11}
+	return fileDescriptor_c90a6c4a93f92bf4, []int{11}
 }
 
-var File_micro_go_micro_util_file_proto_file_proto protoreflect.FileDescriptor
-
-var file_micro_go_micro_util_file_proto_file_proto_rawDesc = []byte{
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+func (m *WriteResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_WriteResponse.Unmarshal(m, b)
+}
+func (m *WriteResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_WriteResponse.Marshal(b, m, deterministic)
+}
+func (m *WriteResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_WriteResponse.Merge(m, src)
+}
+func (m *WriteResponse) XXX_Size() int {
+	return xxx_messageInfo_WriteResponse.Size(m)
+}
+func (m *WriteResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_WriteResponse.DiscardUnknown(m)
 }
 
-var (
-	file_micro_go_micro_util_file_proto_file_proto_rawDescOnce sync.Once
-	file_micro_go_micro_util_file_proto_file_proto_rawDescData = file_micro_go_micro_util_file_proto_file_proto_rawDesc
-)
+var xxx_messageInfo_WriteResponse proto.InternalMessageInfo
 
-func file_micro_go_micro_util_file_proto_file_proto_rawDescGZIP() []byte {
-	file_micro_go_micro_util_file_proto_file_proto_rawDescOnce.Do(func() {
-		file_micro_go_micro_util_file_proto_file_proto_rawDescData = protoimpl.X.CompressGZIP(file_micro_go_micro_util_file_proto_file_proto_rawDescData)
-	})
-	return file_micro_go_micro_util_file_proto_file_proto_rawDescData
+func init() {
+	proto.RegisterType((*OpenRequest)(nil), "go.micro.server.OpenRequest")
+	proto.RegisterType((*OpenResponse)(nil), "go.micro.server.OpenResponse")
+	proto.RegisterType((*CloseRequest)(nil), "go.micro.server.CloseRequest")
+	proto.RegisterType((*CloseResponse)(nil), "go.micro.server.CloseResponse")
+	proto.RegisterType((*StatRequest)(nil), "go.micro.server.StatRequest")
+	proto.RegisterType((*StatResponse)(nil), "go.micro.server.StatResponse")
+	proto.RegisterType((*ReadRequest)(nil), "go.micro.server.ReadRequest")
+	proto.RegisterType((*ReadResponse)(nil), "go.micro.server.ReadResponse")
+	proto.RegisterType((*GetRequest)(nil), "go.micro.server.GetRequest")
+	proto.RegisterType((*GetResponse)(nil), "go.micro.server.GetResponse")
+	proto.RegisterType((*WriteRequest)(nil), "go.micro.server.WriteRequest")
+	proto.RegisterType((*WriteResponse)(nil), "go.micro.server.WriteResponse")
 }
 
-var file_micro_go_micro_util_file_proto_file_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
-var file_micro_go_micro_util_file_proto_file_proto_goTypes = []interface{}{
-	(*OpenRequest)(nil),   // 0: go.micro.server.OpenRequest
-	(*OpenResponse)(nil),  // 1: go.micro.server.OpenResponse
-	(*CloseRequest)(nil),  // 2: go.micro.server.CloseRequest
-	(*CloseResponse)(nil), // 3: go.micro.server.CloseResponse
-	(*StatRequest)(nil),   // 4: go.micro.server.StatRequest
-	(*StatResponse)(nil),  // 5: go.micro.server.StatResponse
-	(*ReadRequest)(nil),   // 6: go.micro.server.ReadRequest
-	(*ReadResponse)(nil),  // 7: go.micro.server.ReadResponse
-	(*GetRequest)(nil),    // 8: go.micro.server.GetRequest
-	(*GetResponse)(nil),   // 9: go.micro.server.GetResponse
-	(*WriteRequest)(nil),  // 10: go.micro.server.WriteRequest
-	(*WriteResponse)(nil), // 11: go.micro.server.WriteResponse
-}
-var file_micro_go_micro_util_file_proto_file_proto_depIdxs = []int32{
-	0,  // 0: go.micro.server.File.Open:input_type -> go.micro.server.OpenRequest
-	4,  // 1: go.micro.server.File.Stat:input_type -> go.micro.server.StatRequest
-	6,  // 2: go.micro.server.File.Read:input_type -> go.micro.server.ReadRequest
-	10, // 3: go.micro.server.File.Write:input_type -> go.micro.server.WriteRequest
-	2,  // 4: go.micro.server.File.Close:input_type -> go.micro.server.CloseRequest
-	1,  // 5: go.micro.server.File.Open:output_type -> go.micro.server.OpenResponse
-	5,  // 6: go.micro.server.File.Stat:output_type -> go.micro.server.StatResponse
-	7,  // 7: go.micro.server.File.Read:output_type -> go.micro.server.ReadResponse
-	11, // 8: go.micro.server.File.Write:output_type -> go.micro.server.WriteResponse
-	3,  // 9: go.micro.server.File.Close:output_type -> go.micro.server.CloseResponse
-	5,  // [5:10] is the sub-list for method output_type
-	0,  // [0:5] is the sub-list for method input_type
-	0,  // [0:0] is the sub-list for extension type_name
-	0,  // [0:0] is the sub-list for extension extendee
-	0,  // [0:0] is the sub-list for field type_name
+func init() { proto.RegisterFile("util/file/proto/file.proto", fileDescriptor_c90a6c4a93f92bf4) }
+
+var fileDescriptor_c90a6c4a93f92bf4 = []byte{
+	// 447 bytes of a gzipped FileDescriptorProto
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+	0xad, 0xa5, 0xc2, 0xcd, 0xf9, 0x07, 0xfb, 0xe8, 0x02, 0xe6, 0xae, 0x3e, 0x80, 0xe9, 0x0b, 0x48,
+	0xbf, 0xe8, 0x52, 0xff, 0x87, 0x5e, 0xfa, 0x0d, 0xb2, 0xa1, 0xd5, 0x69, 0x22, 0x10, 0xeb, 0xdf,
+	0xed, 0xa6, 0xcf, 0xc6, 0x66, 0x4d, 0x89, 0x3f, 0xc3, 0x7d, 0x22, 0x66, 0x63, 0xf2, 0x1c, 0xe6,
+	0x75, 0xa9, 0xf4, 0xcd, 0x5a, 0x72, 0x51, 0x09, 0xe4, 0xcb, 0xc8, 0x16, 0x33, 0xb3, 0xf8, 0xd1,
+	0xad, 0xd1, 0x6b, 0x48, 0x19, 0x96, 0x7c, 0x42, 0xb7, 0xb9, 0xaf, 0xac, 0x2a, 0x85, 0xda, 0x91,
+	0x5d, 0xb6, 0x3d, 0x2f, 0xda, 0x9d, 0x47, 0xaf, 0x20, 0x1b, 0x50, 0x3b, 0x9d, 0xb6, 0x27, 0xf0,
+	0x34, 0x11, 0x88, 0x79, 0xa9, 0x4b, 0x4b, 0xcb, 0x98, 0x8d, 0xc9, 0x23, 0x88, 0x50, 0x56, 0x16,
+	0x95, 0x30, 0x13, 0xd2, 0x37, 0x00, 0xef, 0x51, 0x4f, 0x69, 0x7a, 0x02, 0xc9, 0x6d, 0x2d, 0x57,
+	0x3f, 0x6e, 0x04, 0x77, 0xaa, 0xee, 0xdb, 0xfc, 0x9a, 0xd3, 0xcf, 0x90, 0xda, 0x8d, 0x4e, 0x81,
+	0xdf, 0x19, 0xec, 0x75, 0x8e, 0x3e, 0xd8, 0x46, 0x5c, 0xb4, 0x13, 0x47, 0x3f, 0x40, 0xf6, 0xb5,
+	0x13, 0x1a, 0xef, 0xf0, 0x40, 0x47, 0xac, 0x05, 0xcc, 0x1d, 0x6b, 0xd0, 0xf7, 0xf2, 0x6f, 0x08,
+	0xf1, 0x3b, 0x51, 0x23, 0xb9, 0x84, 0xd8, 0xd8, 0x8e, 0x3c, 0x2d, 0x0e, 0x7c, 0x5d, 0x78, 0xa6,
+	0xce, 0x9f, 0x4d, 0x54, 0x9d, 0xa5, 0x66, 0x06, 0x63, 0x9c, 0x32, 0x82, 0xf1, 0xbc, 0x36, 0x82,
+	0xf1, 0xed, 0x35, 0x60, 0xcc, 0x87, 0x1c, 0xc1, 0x78, 0x56, 0x19, 0xc1, 0xf8, 0x5f, 0x9f, 0xce,
+	0xc8, 0x15, 0xdc, 0xb3, 0xd7, 0x25, 0xc7, 0x9d, 0xfe, 0x93, 0xe6, 0xa7, 0x53, 0x65, 0x9f, 0x64,
+	0xa7, 0x67, 0x84, 0xe4, 0x4f, 0xdd, 0x08, 0x69, 0x7f, 0xe8, 0x66, 0xb7, 0x27, 0xf6, 0xf7, 0xf1,
+	0xea, 0x5f, 0x00, 0x00, 0x00, 0xff, 0xff, 0xaf, 0x08, 0x7e, 0x74, 0x5c, 0x04, 0x00, 0x00,
 }
 
-func init() { file_micro_go_micro_util_file_proto_file_proto_init() }
-func file_micro_go_micro_util_file_proto_file_proto_init() {
-	if File_micro_go_micro_util_file_proto_file_proto != nil {
-		return
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ grpc.ClientConn
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+const _ = grpc.SupportPackageIsVersion4
+
+// FileClient is the client API for File service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
+type FileClient interface {
+	Open(ctx context.Context, in *OpenRequest, opts ...grpc.CallOption) (*OpenResponse, error)
+	Stat(ctx context.Context, in *StatRequest, opts ...grpc.CallOption) (*StatResponse, error)
+	Read(ctx context.Context, in *ReadRequest, opts ...grpc.CallOption) (*ReadResponse, error)
+	Write(ctx context.Context, in *WriteRequest, opts ...grpc.CallOption) (*WriteResponse, error)
+	Close(ctx context.Context, in *CloseRequest, opts ...grpc.CallOption) (*CloseResponse, error)
+}
+
+type fileClient struct {
+	cc *grpc.ClientConn
+}
+
+func NewFileClient(cc *grpc.ClientConn) FileClient {
+	return &fileClient{cc}
+}
+
+func (c *fileClient) Open(ctx context.Context, in *OpenRequest, opts ...grpc.CallOption) (*OpenResponse, error) {
+	out := new(OpenResponse)
+	err := c.cc.Invoke(ctx, "/go.micro.server.File/Open", in, out, opts...)
+	if err != nil {
+		return nil, err
 	}
-	if !protoimpl.UnsafeEnabled {
-		file_micro_go_micro_util_file_proto_file_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*OpenRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_micro_go_micro_util_file_proto_file_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*OpenResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_micro_go_micro_util_file_proto_file_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CloseRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_micro_go_micro_util_file_proto_file_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CloseResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_micro_go_micro_util_file_proto_file_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*StatRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_micro_go_micro_util_file_proto_file_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*StatResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_micro_go_micro_util_file_proto_file_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ReadRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_micro_go_micro_util_file_proto_file_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ReadResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_micro_go_micro_util_file_proto_file_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_micro_go_micro_util_file_proto_file_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_micro_go_micro_util_file_proto_file_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*WriteRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_micro_go_micro_util_file_proto_file_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*WriteResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
+	return out, nil
+}
+
+func (c *fileClient) Stat(ctx context.Context, in *StatRequest, opts ...grpc.CallOption) (*StatResponse, error) {
+	out := new(StatResponse)
+	err := c.cc.Invoke(ctx, "/go.micro.server.File/Stat", in, out, opts...)
+	if err != nil {
+		return nil, err
 	}
-	type x struct{}
-	out := protoimpl.TypeBuilder{
-		File: protoimpl.DescBuilder{
-			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_micro_go_micro_util_file_proto_file_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   12,
-			NumExtensions: 0,
-			NumServices:   1,
+	return out, nil
+}
+
+func (c *fileClient) Read(ctx context.Context, in *ReadRequest, opts ...grpc.CallOption) (*ReadResponse, error) {
+	out := new(ReadResponse)
+	err := c.cc.Invoke(ctx, "/go.micro.server.File/Read", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *fileClient) Write(ctx context.Context, in *WriteRequest, opts ...grpc.CallOption) (*WriteResponse, error) {
+	out := new(WriteResponse)
+	err := c.cc.Invoke(ctx, "/go.micro.server.File/Write", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *fileClient) Close(ctx context.Context, in *CloseRequest, opts ...grpc.CallOption) (*CloseResponse, error) {
+	out := new(CloseResponse)
+	err := c.cc.Invoke(ctx, "/go.micro.server.File/Close", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// FileServer is the server API for File service.
+type FileServer interface {
+	Open(context.Context, *OpenRequest) (*OpenResponse, error)
+	Stat(context.Context, *StatRequest) (*StatResponse, error)
+	Read(context.Context, *ReadRequest) (*ReadResponse, error)
+	Write(context.Context, *WriteRequest) (*WriteResponse, error)
+	Close(context.Context, *CloseRequest) (*CloseResponse, error)
+}
+
+// UnimplementedFileServer can be embedded to have forward compatible implementations.
+type UnimplementedFileServer struct {
+}
+
+func (*UnimplementedFileServer) Open(ctx context.Context, req *OpenRequest) (*OpenResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Open not implemented")
+}
+func (*UnimplementedFileServer) Stat(ctx context.Context, req *StatRequest) (*StatResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Stat not implemented")
+}
+func (*UnimplementedFileServer) Read(ctx context.Context, req *ReadRequest) (*ReadResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Read not implemented")
+}
+func (*UnimplementedFileServer) Write(ctx context.Context, req *WriteRequest) (*WriteResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Write not implemented")
+}
+func (*UnimplementedFileServer) Close(ctx context.Context, req *CloseRequest) (*CloseResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Close not implemented")
+}
+
+func RegisterFileServer(s *grpc.Server, srv FileServer) {
+	s.RegisterService(&_File_serviceDesc, srv)
+}
+
+func _File_Open_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(OpenRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(FileServer).Open(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/go.micro.server.File/Open",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(FileServer).Open(ctx, req.(*OpenRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _File_Stat_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(StatRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(FileServer).Stat(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/go.micro.server.File/Stat",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(FileServer).Stat(ctx, req.(*StatRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _File_Read_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ReadRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(FileServer).Read(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/go.micro.server.File/Read",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(FileServer).Read(ctx, req.(*ReadRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _File_Write_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(WriteRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(FileServer).Write(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/go.micro.server.File/Write",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(FileServer).Write(ctx, req.(*WriteRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _File_Close_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(CloseRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(FileServer).Close(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/go.micro.server.File/Close",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(FileServer).Close(ctx, req.(*CloseRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+var _File_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "go.micro.server.File",
+	HandlerType: (*FileServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Open",
+			Handler:    _File_Open_Handler,
 		},
-		GoTypes:           file_micro_go_micro_util_file_proto_file_proto_goTypes,
-		DependencyIndexes: file_micro_go_micro_util_file_proto_file_proto_depIdxs,
-		MessageInfos:      file_micro_go_micro_util_file_proto_file_proto_msgTypes,
-	}.Build()
-	File_micro_go_micro_util_file_proto_file_proto = out.File
-	file_micro_go_micro_util_file_proto_file_proto_rawDesc = nil
-	file_micro_go_micro_util_file_proto_file_proto_goTypes = nil
-	file_micro_go_micro_util_file_proto_file_proto_depIdxs = nil
+		{
+			MethodName: "Stat",
+			Handler:    _File_Stat_Handler,
+		},
+		{
+			MethodName: "Read",
+			Handler:    _File_Read_Handler,
+		},
+		{
+			MethodName: "Write",
+			Handler:    _File_Write_Handler,
+		},
+		{
+			MethodName: "Close",
+			Handler:    _File_Close_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "util/file/proto/file.proto",
 }
diff --git a/util/file/proto/file.pb.micro.go b/util/file/proto/file.pb.micro.go
index fc4e6928..ac135745 100644
--- a/util/file/proto/file.pb.micro.go
+++ b/util/file/proto/file.pb.micro.go
@@ -1,5 +1,5 @@
 // Code generated by protoc-gen-micro. DO NOT EDIT.
-// source: micro/go-micro/util/file/proto/file.proto
+// source: util/file/proto/file.proto
 
 package go_micro_server
 
diff --git a/util/mux/mux.go b/util/mux/mux.go
index 0f03298f..7ad7731f 100644
--- a/util/mux/mux.go
+++ b/util/mux/mux.go
@@ -5,6 +5,7 @@ import (
 	"context"
 	"sync"
 
+	"github.com/micro/go-micro/v2/client"
 	"github.com/micro/go-micro/v2/debug/service/handler"
 	"github.com/micro/go-micro/v2/proxy"
 	"github.com/micro/go-micro/v2/server"
@@ -42,7 +43,7 @@ func New(name string, p proxy.Proxy) *Server {
 		server.DefaultRouter.Handle(
 			// inject the debug handler
 			server.DefaultRouter.NewHandler(
-				handler.NewHandler(),
+				handler.NewHandler(client.DefaultClient),
 				server.InternalHandler(true),
 			),
 		)
diff --git a/util/wrapper/wrapper.go b/util/wrapper/wrapper.go
index d5ff9e83..d261940d 100644
--- a/util/wrapper/wrapper.go
+++ b/util/wrapper/wrapper.go
@@ -229,6 +229,7 @@ func AuthHandler(fn func() auth.Auth) server.HandlerWrapper {
 }
 
 type cacheWrapper struct {
+	cache func() *client.Cache
 	client.Client
 }
 
@@ -242,7 +243,7 @@ func (c *cacheWrapper) Call(ctx context.Context, req client.Request, rsp interfa
 	}
 
 	// if the client doesn't have a cacbe setup don't continue
-	cache := c.Options().Cache
+	cache := c.cache()
 	if cache == nil {
 		return c.Client.Call(ctx, req, rsp, opts...)
 	}
@@ -269,6 +270,6 @@ func (c *cacheWrapper) Call(ctx context.Context, req client.Request, rsp interfa
 }
 
 // CacheClient wraps requests with the cache wrapper
-func CacheClient(c client.Client) client.Client {
-	return &cacheWrapper{c}
+func CacheClient(cacheFn func() *client.Cache, c client.Client) client.Client {
+	return &cacheWrapper{cacheFn, c}
 }

From 95703e456527c43e5f997d360194c64e3b91fad3 Mon Sep 17 00:00:00 2001
From: Ben Toogood <bentoogood@gmail.com>
Date: Sun, 24 May 2020 20:26:37 +0100
Subject: [PATCH 5/6] Fixes and improved test coverage

---
 auth/service/service.go      | 38 +++++++--------------------
 util/wrapper/wrapper.go      | 15 ++++++++---
 util/wrapper/wrapper_test.go | 51 ++++++++++++++++++++++++++++--------
 3 files changed, 61 insertions(+), 43 deletions(-)

diff --git a/auth/service/service.go b/auth/service/service.go
index fb5cb755..eacc2596 100644
--- a/auth/service/service.go
+++ b/auth/service/service.go
@@ -5,7 +5,6 @@ import (
 	"fmt"
 	"sort"
 	"strings"
-	"sync"
 	"time"
 
 	"github.com/micro/go-micro/v2/auth"
@@ -23,9 +22,6 @@ type svc struct {
 	auth    pb.AuthService
 	rule    pb.RulesService
 	jwt     token.Provider
-
-	rules []*pb.Rule
-	sync.Mutex
 }
 
 func (s *svc) String() string {
@@ -53,8 +49,6 @@ func (s *svc) Init(opts ...auth.Option) {
 }
 
 func (s *svc) Options() auth.Options {
-	s.Lock()
-	defer s.Unlock()
 	return s.options
 }
 
@@ -110,9 +104,6 @@ func (s *svc) Revoke(role string, res *auth.Resource) error {
 
 // Verify an account has access to a resource
 func (s *svc) Verify(acc *auth.Account, res *auth.Resource) error {
-	// load the rules if none are loaded
-	s.loadRulesIfEmpty()
-
 	// set the namespace on the resource
 	if len(res.Namespace) == 0 {
 		res.Namespace = s.Options().Namespace
@@ -230,11 +221,14 @@ func accessForRule(rule *pb.Rule, acc *auth.Account, res *auth.Resource) pb.Acce
 // listRules gets all the rules from the store which match the filters.
 // filters are namespace, type, name and then endpoint.
 func (s *svc) listRules(filters ...string) []*pb.Rule {
-	s.Lock()
-	defer s.Unlock()
+	// load rules using the client cache
+	allRules, err := s.loadRules()
+	if err != nil {
+		return []*pb.Rule{}
+	}
 
 	var rules []*pb.Rule
-	for _, r := range s.rules {
+	for _, r := range allRules {
 		if len(filters) > 0 && r.Resource.Namespace != filters[0] {
 			continue
 		}
@@ -260,27 +254,15 @@ func (s *svc) listRules(filters ...string) []*pb.Rule {
 }
 
 // loadRules retrieves the rules from the auth service
-func (s *svc) loadRules() {
+func (s *svc) loadRules() ([]*pb.Rule, error) {
 	rsp, err := s.rule.List(context.TODO(), &pb.ListRequest{}, client.WithCache(time.Minute))
-	s.Lock()
-	defer s.Unlock()
 
 	if err != nil {
-		log.Errorf("Error listing rules: %v", err)
-		return
+		log.Debugf("Error listing rules: %v", err)
+		return nil, err
 	}
 
-	s.rules = rsp.Rules
-}
-
-func (s *svc) loadRulesIfEmpty() {
-	s.Lock()
-	rules := s.rules
-	s.Unlock()
-
-	if len(rules) == 0 {
-		s.loadRules()
-	}
+	return rsp.Rules, nil
 }
 
 func serializeToken(t *pb.Token) *auth.Token {
diff --git a/util/wrapper/wrapper.go b/util/wrapper/wrapper.go
index d261940d..ba40d7fd 100644
--- a/util/wrapper/wrapper.go
+++ b/util/wrapper/wrapper.go
@@ -2,6 +2,7 @@ package wrapper
 
 import (
 	"context"
+	"reflect"
 	"strings"
 	"time"
 
@@ -229,7 +230,7 @@ func AuthHandler(fn func() auth.Auth) server.HandlerWrapper {
 }
 
 type cacheWrapper struct {
-	cache func() *client.Cache
+	cacheFn func() *client.Cache
 	client.Client
 }
 
@@ -243,7 +244,7 @@ func (c *cacheWrapper) Call(ctx context.Context, req client.Request, rsp interfa
 	}
 
 	// if the client doesn't have a cacbe setup don't continue
-	cache := c.cache()
+	cache := c.cacheFn()
 	if cache == nil {
 		return c.Client.Call(ctx, req, rsp, opts...)
 	}
@@ -253,9 +254,15 @@ func (c *cacheWrapper) Call(ctx context.Context, req client.Request, rsp interfa
 		return c.Client.Call(ctx, req, rsp, opts...)
 	}
 
-	// check to see if there is a response
+	// if the response is nil don't call the cache since we can't assign the response
+	if rsp == nil {
+		return c.Client.Call(ctx, req, rsp, opts...)
+	}
+
+	// check to see if there is a response cached, if there is assign it
 	if r, ok := cache.Get(ctx, &req); ok {
-		rsp = r
+		val := reflect.ValueOf(rsp).Elem()
+		val.Set(reflect.ValueOf(r).Elem())
 		return nil
 	}
 
diff --git a/util/wrapper/wrapper_test.go b/util/wrapper/wrapper_test.go
index c3454779..d9760fba 100644
--- a/util/wrapper/wrapper_test.go
+++ b/util/wrapper/wrapper_test.go
@@ -2,6 +2,7 @@ package wrapper
 
 import (
 	"context"
+	"reflect"
 	"testing"
 	"time"
 
@@ -56,25 +57,33 @@ func TestWrapper(t *testing.T) {
 type testClient struct {
 	callCount int
 	callRsp   interface{}
-	cache     *client.Cache
 	client.Client
 }
 
 func (c *testClient) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
 	c.callCount++
-	rsp = c.callRsp
+
+	if c.callRsp != nil {
+		val := reflect.ValueOf(rsp).Elem()
+		val.Set(reflect.ValueOf(c.callRsp).Elem())
+	}
+
 	return nil
 }
 
-func (c *testClient) Options() client.Options {
-	return client.Options{Cache: c.cache}
+type testRsp struct {
+	value string
 }
+
 func TestCacheWrapper(t *testing.T) {
 	req := client.NewRequest("go.micro.service.foo", "Foo.Bar", nil)
 
 	t.Run("NilCache", func(t *testing.T) {
 		cli := new(testClient)
-		w := CacheClient(cli)
+
+		w := CacheClient(func() *client.Cache {
+			return nil
+		}, cli)
 
 		// perfroming two requests should increment the call count by two indicating the cache wasn't
 		// used even though the WithCache option was passed.
@@ -88,7 +97,11 @@ func TestCacheWrapper(t *testing.T) {
 
 	t.Run("OptionNotSet", func(t *testing.T) {
 		cli := new(testClient)
-		w := CacheClient(cli)
+		cache := client.NewCache()
+
+		w := CacheClient(func() *client.Cache {
+			return cache
+		}, cli)
 
 		// perfroming two requests should increment the call count by two since we didn't pass the WithCache
 		// option to Call.
@@ -101,13 +114,21 @@ func TestCacheWrapper(t *testing.T) {
 	})
 
 	t.Run("OptionSet", func(t *testing.T) {
-		cli := &testClient{callRsp: "foobar", cache: client.NewCache()}
-		w := CacheClient(cli)
+		val := "foo"
+		cli := &testClient{callRsp: &testRsp{value: val}}
+		cache := client.NewCache()
+
+		w := CacheClient(func() *client.Cache {
+			return cache
+		}, cli)
 
 		// perfroming two requests should increment the call count by once since the second request should
-		// have used the cache
-		err1 := w.Call(context.TODO(), req, nil, client.WithCache(time.Minute))
-		err2 := w.Call(context.TODO(), req, nil, client.WithCache(time.Minute))
+		// have used the cache. The correct value should be set on both responses and no errors should
+		// be returned.
+		rsp1 := &testRsp{}
+		rsp2 := &testRsp{}
+		err1 := w.Call(context.TODO(), req, rsp1, client.WithCache(time.Minute))
+		err2 := w.Call(context.TODO(), req, rsp2, client.WithCache(time.Minute))
 
 		if err1 != nil {
 			t.Errorf("Expected nil error, got %v", err1)
@@ -115,6 +136,14 @@ func TestCacheWrapper(t *testing.T) {
 		if err2 != nil {
 			t.Errorf("Expected nil error, got %v", err2)
 		}
+
+		if rsp1.value != val {
+			t.Errorf("Expected %v to be assigned to the value, got %v", val, rsp1.value)
+		}
+		if rsp2.value != val {
+			t.Errorf("Expected %v to be assigned to the value, got %v", val, rsp2.value)
+		}
+
 		if cli.callCount != 1 {
 			t.Errorf("Expected the client to be called 1 time, was actually called %v time(s)", cli.callCount)
 		}

From 198e9428892352324b4ab4be3d85629bcae64a61 Mon Sep 17 00:00:00 2001
From: Ben Toogood <bentoogood@gmail.com>
Date: Sun, 24 May 2020 20:32:22 +0100
Subject: [PATCH 6/6] Remove redundant test

---
 auth/service/sevice_test.go | 26 --------------------------
 1 file changed, 26 deletions(-)
 delete mode 100644 auth/service/sevice_test.go

diff --git a/auth/service/sevice_test.go b/auth/service/sevice_test.go
deleted file mode 100644
index 1c206ee3..00000000
--- a/auth/service/sevice_test.go
+++ /dev/null
@@ -1,26 +0,0 @@
-package service
-
-import (
-	"testing"
-
-	pb "github.com/micro/go-micro/v2/auth/service/proto"
-)
-
-func TestListRulesSorting(t *testing.T) {
-	s := &svc{
-		rules: []*pb.Rule{
-			&pb.Rule{Priority: 1},
-			&pb.Rule{Priority: 3},
-			&pb.Rule{Priority: 2},
-		},
-	}
-
-	var priorities []int32
-	for _, r := range s.listRules() {
-		priorities = append(priorities, r.Priority)
-	}
-
-	if priorities[0] != 1 || priorities[1] != 2 || priorities[2] != 3 {
-		t.Errorf("Incorrect Rule Sequence")
-	}
-}