fix lint issues (#16)

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

api/api.go

@@ -59,22 +59,6 @@ type Service struct {
 	Services []*register.Service
 }
 
-func strip(s string) string {
-	return strings.TrimSpace(s)
-}
-
-func slice(s string) []string {
-	var sl []string
-
-	for _, p := range strings.Split(s, ",") {
-		if str := strip(p); len(str) > 0 {
-			sl = append(sl, strip(p))
-		}
-	}
-
-	return sl
-}
-
 // Encode encodes an endpoint to endpoint metadata
 func Encode(e *Endpoint) map[string]string {
 	if e == nil {

api/handler/api/util_test.go

@@ -36,11 +36,9 @@ func TestRequestToProto(t *testing.T) {
 		for k, v := range d.Header {
 			if val, ok := p.Header[k]; !ok {
 				t.Fatalf("Expected header %s", k)
-			} else {
-				if val.Values[0] != v[0] {
+			} else if val.Values[0] != v[0] {
 				t.Fatalf("Expected val %s, got %s", val.Values[0], v[0])
 			}
 		}
 	}
-	}
 }

broker/memory.go

@@ -129,11 +129,9 @@ func (m *memoryBroker) Publish(ctx context.Context, topic string, msg *Message,
 			}
 			if eh != nil {
 				eh(p)
-			} else {
-				if m.opts.Logger.V(logger.ErrorLevel) {
+			} else if m.opts.Logger.V(logger.ErrorLevel) {
 				m.opts.Logger.Error(m.opts.Context, err.Error())
 			}
-			}
 			continue
 		}
 	}

config/default.go

@@ -107,7 +107,7 @@ func (c *defaultConfig) fillValue(ctx context.Context, value reflect.Value, val
 		if err != nil {
 			return err
 		}
-		value.Set(reflect.ValueOf(float64(v)))
+		value.Set(reflect.ValueOf(v))
 	case reflect.Int:
 		v, err := strconv.ParseInt(val, 10, 0)
 		if err != nil {
@@ -137,7 +137,7 @@ func (c *defaultConfig) fillValue(ctx context.Context, value reflect.Value, val
 		if err != nil {
 			return err
 		}
-		value.Set(reflect.ValueOf(int64(v)))
+		value.Set(reflect.ValueOf(v))
 	case reflect.Uint:
 		v, err := strconv.ParseUint(val, 10, 0)
 		if err != nil {
@@ -167,7 +167,7 @@ func (c *defaultConfig) fillValue(ctx context.Context, value reflect.Value, val
 		if err != nil {
 			return err
 		}
-		value.Set(reflect.ValueOf(uint64(v)))
+		value.Set(reflect.ValueOf(v))
 	}
 	return nil
 }

meter/noop.go

@@ -8,7 +8,6 @@ import (
 // NoopMeter is an noop implementation of Meter
 type noopMeter struct {
 	opts Options
-	labels Labels
 }
 
 // NewMeter returns a configured noop reporter:
@@ -39,27 +38,47 @@ func (r *noopMeter) Counter(name string, opts ...Option) Counter {
 
 // FloatCounter implements the Meter interface
 func (r *noopMeter) FloatCounter(name string, opts ...Option) FloatCounter {
-	return &noopFloatCounter{}
+	options := Options{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return &noopFloatCounter{labels: options.Labels}
 }
 
 // Gauge implements the Meter interface
 func (r *noopMeter) Gauge(name string, f func() float64, opts ...Option) Gauge {
-	return &noopGauge{}
+	options := Options{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return &noopGauge{labels: options.Labels}
 }
 
 // Summary implements the Meter interface
 func (r *noopMeter) Summary(name string, opts ...Option) Summary {
-	return &noopSummary{}
+	options := Options{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return &noopSummary{labels: options.Labels}
 }
 
 // SummaryExt implements the Meter interface
 func (r *noopMeter) SummaryExt(name string, window time.Duration, quantiles []float64, opts ...Option) Summary {
-	return &noopSummary{}
+	options := Options{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return &noopSummary{labels: options.Labels}
 }
 
 // Histogram implements the Meter interface
 func (r *noopMeter) Histogram(name string, opts ...Option) Histogram {
-	return &noopHistogram{}
+	options := Options{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return &noopHistogram{labels: options.Labels}
 }
 
 // Set implements the Meter interface
@@ -111,7 +130,9 @@ func (r *noopCounter) Set(uint64) {
 
 }
 
-type noopFloatCounter struct{}
+type noopFloatCounter struct {
+	labels Labels
+}
 
 func (r *noopFloatCounter) Add(float64) {
 
@@ -129,13 +150,17 @@ func (r *noopFloatCounter) Sub(float64) {
 
 }
 
-type noopGauge struct{}
+type noopGauge struct {
+	labels Labels
+}
 
 func (r *noopGauge) Get() float64 {
 	return 0
 }
 
-type noopSummary struct{}
+type noopSummary struct {
+	labels Labels
+}
 
 func (r *noopSummary) Update(float64) {
 
@@ -145,7 +170,9 @@ func (r *noopSummary) UpdateDuration(time.Time) {
 
 }
 
-type noopHistogram struct{}
+type noopHistogram struct {
+	labels Labels
+}
 
 func (r *noopHistogram) Reset() {
 

network/tunnel/transport/transport.go

@@ -88,7 +88,7 @@ func NewTransport(opts ...transport.Option) transport.Transport {
 	}
 
 	// initialise
-	t.Init(opts...)
+	//t.Init(opts...)
 
 	return t
 }

options.go

@@ -72,6 +72,7 @@ func NewOptions(opts ...Option) Options {
 	}
 
 	for _, o := range opts {
+		//nolint:errcheck
 		o(&options)
 	}
 

register/memory.go

@@ -57,9 +57,7 @@ func (m *memory) ttlPrune() {
 	prune := time.NewTicker(ttlPruneTime)
 	defer prune.Stop()
 
-	for {
-		select {
-		case <-prune.C:
+	for range prune.C {
 		m.Lock()
 		for domain, services := range m.records {
 			for service, versions := range services {
@@ -77,7 +75,6 @@ func (m *memory) ttlPrune() {
 		}
 		m.Unlock()
 	}
-	}
 }
 
 func (m *memory) sendEvent(r *Result) {

router/route.go

@@ -36,7 +36,17 @@ type Route struct {
 // Hash returns route hash sum.
 func (r *Route) Hash() uint64 {
 	h := fnv.New64()
-	h.Reset()
-	h.Write([]byte(r.Service + r.Address + r.Gateway + r.Network + r.Router + r.Link))
+	//nolint:errcheck
+	h.Write([]byte(r.Service))
+	//nolint:errcheck
+	h.Write([]byte(r.Address))
+	//nolint:errcheck
+	h.Write([]byte(r.Gateway))
+	//nolint:errcheck
+	h.Write([]byte(r.Network))
+	//nolint:errcheck
+	h.Write([]byte(r.Router))
+	//nolint:errcheck
+	h.Write([]byte(r.Link))
 	return h.Sum64()
 }

selector/random/random.go

@@ -22,6 +22,7 @@ func (r *random) Select(routes []string, opts ...selector.SelectOption) (selecto
 		}
 
 		// select a random route from the slice
+		//nolint:gosec
 		return routes[rand.Intn(len(routes))]
 	}, nil
 }
@@ -40,5 +41,5 @@ func (r *random) String() string {
 
 // NewSelector returns a random selector
 func NewSelector(opts ...selector.Option) selector.Selector {
-	return new(random)
+	return &random{}
 }

server/subscriber.go

@@ -216,10 +216,13 @@ func (n *noopServer) createSubHandler(sb *subscriber, opts Options) broker.Handl
 
 		hdr := make(map[string]string, len(msg.Header))
 		for k, v := range msg.Header {
+			if k == "Content-Type" {
+				continue
+			}
 			hdr[k] = v
 		}
-		delete(hdr, "Content-Type")
-		ctx := metadata.NewContext(sb.opts.Context, hdr)
+
+		ctx := metadata.NewIncomingContext(sb.opts.Context, hdr)
 
 		results := make(chan error, len(sb.handlers))
 

service.go

@@ -92,7 +92,9 @@ func (s *service) Init(opts ...Option) error {
 	var err error
 	// process options
 	for _, o := range opts {
-		o(&s.opts)
+		if err = o(&s.opts); err != nil {
+			return err
+		}
 	}
 
 	for _, cfg := range s.opts.Configs {

store/memory_test.go

@@ -11,7 +11,9 @@ import (
 
 func TestMemoryReInit(t *testing.T) {
 	s := store.NewStore(store.Table("aaa"))
-	s.Init(store.Table(""))
+	if err := s.Init(store.Table("")); err != nil {
+		t.Fatal(err)
+	}
 	if len(s.Options().Table) > 0 {
 		t.Error("Init didn't reinitialise the store")
 	}
@@ -19,25 +21,33 @@ func TestMemoryReInit(t *testing.T) {
 
 func TestMemoryBasic(t *testing.T) {
 	s := store.NewStore()
-	s.Init()
+	if err := s.Init(); err != nil {
+		t.Fatal(err)
+	}
 	basictest(s, t)
 }
 
 func TestMemoryPrefix(t *testing.T) {
 	s := store.NewStore()
-	s.Init(store.Table("some-prefix"))
+	if err := s.Init(store.Table("some-prefix")); err != nil {
+		t.Fatal(err)
+	}
 	basictest(s, t)
 }
 
 func TestMemoryNamespace(t *testing.T) {
 	s := store.NewStore()
-	s.Init(store.Database("some-namespace"))
+	if err := s.Init(store.Database("some-namespace")); err != nil {
+		t.Fatal(err)
+	}
 	basictest(s, t)
 }
 
 func TestMemoryNamespacePrefix(t *testing.T) {
 	s := store.NewStore()
-	s.Init(store.Table("some-prefix"), store.Database("some-namespace"))
+	if err := s.Init(store.Table("some-prefix"), store.Database("some-namespace")); err != nil {
+		t.Fatal(err)
+	}
 	basictest(s, t)
 }
 
@@ -53,11 +63,9 @@ func basictest(s store.Store, t *testing.T) {
 	var val []byte
 	if err := s.Read(ctx, "Hello", &val); err != nil {
 		t.Error(err)
-	} else {
-		if string(val) != "World" {
+	} else if string(val) != "World" {
 		t.Errorf("Expected %s, got %s", "World", val)
 	}
-	}
 	time.Sleep(time.Millisecond * 200)
 	if err := s.Read(ctx, "Hello", &val); err != store.ErrNotFound {
 		t.Errorf("Expected %# v, got %# v", store.ErrNotFound, err)

util/kubernetes/client/templates.go

@@ -185,6 +185,7 @@ metadata:
     {{- end }}
 `
 
+//nolint:gosec
 var secretTmpl = `
 apiVersion: v1
 kind: Secret

util/mdns/server.go

@@ -248,7 +248,8 @@ func (s *Server) handleQuery(query *dns.Msg, from net.Addr) error {
 		return fmt.Errorf("[ERR] mdns: support for DNS requests with high truncated bit not implemented: %v", *query)
 	}
 
-	var unicastAnswer, multicastAnswer []dns.RR
+	unicastAnswer := make([]dns.RR, 0, len(query.Question))
+	multicastAnswer := make([]dns.RR, 0, len(query.Question))
 
 	// Handle each question
 	for _, q := range query.Question {

util/reflect/reflect.go

@@ -243,7 +243,7 @@ func MergeMap(a interface{}, b map[string]interface{}) error {
 				if fva.Elem().Type().Kind() == reflect.Struct {
 					for i := 0; i < fva.Elem().NumField(); i++ {
 						field := fva.Elem().Field(i)
-						if field.Type().Kind() == reflect.Ptr && field.IsNil() && fva.Elem().Type().Field(i).Anonymous == true {
+						if field.Type().Kind() == reflect.Ptr && field.IsNil() && fva.Elem().Type().Field(i).Anonymous {
 							field.Set(reflect.New(field.Type().Elem()))
 						}
 					}

util/router/compile.go

@@ -62,7 +62,7 @@ func (l literal) compile() []op {
 }
 
 func (v variable) compile() []op {
-	var ops []op
+	ops := make([]op, 0, len(v.segments))
 	for _, s := range v.segments {
 		ops = append(ops, s.compile()...)
 	}
@@ -78,11 +78,12 @@ func (v variable) compile() []op {
 }
 
 func (t template) Compile() Template {
-	var rawOps []op
+	rawOps := make([]op, 0, len(t.segments))
 	for _, s := range t.segments {
 		rawOps = append(rawOps, s.compile()...)
 	}
 
+	//ops := make([]int, 0, len(rawOps))
 	var (
 		ops    []int
 		pool   []string

util/stream/stream.go

@@ -36,7 +36,7 @@ func (r *request) Codec() codec.Codec {
 }
 
 func (r *request) Header() metadata.Metadata {
-	md, _ := metadata.FromContext(r.context)
+	md, _ := metadata.FromIncomingContext(r.context)
 	return md
 }
 

util/sync/manager.go

@@ -16,13 +16,10 @@ func (c *syncStore) syncManager() {
 			}
 		}(i, tickerAggregator, ticker)
 	}
-	for {
-		select {
-		case i := <-tickerAggregator:
+	for i := range tickerAggregator {
 		println(i.index, "ticked")
 		c.processQueue(i.index)
 	}
-	}
 }
 
 func (c *syncStore) processQueue(index int) {