fixed struct alignment && refactor linter

broker/memory/memory_test.go

@@ -74,7 +74,7 @@ func TestMemoryBroker(t *testing.T) {
 	topic := "test"
 	count := 10
 
-	fn := func(p broker.Event) error {
+	fn := func(_ broker.Event) error {
 		return nil
 	}
 

broker/options.go

@@ -16,6 +16,9 @@ import (
 
 // Options struct
 type Options struct {
+	// Name holds the broker name
+	Name string
+
 	// Tracer used for tracing
 	Tracer tracer.Tracer
 	// Register can be used for clustering
@@ -28,23 +31,25 @@ type Options struct {
 	Meter meter.Meter
 	// Context holds external options
 	Context context.Context
+
+	// Wait waits for a collection of goroutines to finish
+	Wait *sync.WaitGroup
 	// TLSConfig holds tls.TLSConfig options
 	TLSConfig *tls.Config
+
 	// ErrorHandler used when broker can't unmarshal incoming message
 	ErrorHandler Handler
 	// BatchErrorHandler used when broker can't unmashal incoming messages
 	BatchErrorHandler BatchHandler
-	// Name holds the broker name
+
-	Name string
 	// Addrs holds the broker address
 	Addrs []string
-	// Wait waits for a collection of goroutines to finish
-	Wait *sync.WaitGroup
-	// GracefulTimeout contains time to wait to finish in flight requests
-	GracefulTimeout time.Duration
 	// Hooks can be run before broker Publish/BatchPublish and
 	// Subscribe/BatchSubscribe methods
 	Hooks options.Hooks
+
+	// GracefulTimeout contains time to wait to finish in flight requests
+	GracefulTimeout time.Duration
 }
 
 // NewOptions create new Options

client/backoff.go

@@ -17,13 +17,13 @@ func BackoffExp(_ context.Context, _ Request, attempts int) (time.Duration, erro
 }
 
 // BackoffInterval specifies randomization interval for backoff func
-func BackoffInterval(min time.Duration, max time.Duration) BackoffFunc {
+func BackoffInterval(minTime time.Duration, maxTime time.Duration) BackoffFunc {
 	return func(_ context.Context, _ Request, attempts int) (time.Duration, error) {
 		td := time.Duration(math.Pow(float64(attempts), math.E)) * time.Millisecond * 100
-		if td < min {
+		if td < minTime {
-			return min, nil
+			return minTime, nil
-		} else if td > max {
+		} else if td > maxTime {
-			return max, nil
+			return maxTime, nil
 		}
 		return td, nil
 	}

client/backoff_test.go

@@ -34,23 +34,23 @@ func TestBackoffExp(t *testing.T) {
 }
 
 func TestBackoffInterval(t *testing.T) {
-	min := 100 * time.Millisecond
+	minTime := 100 * time.Millisecond
-	max := 300 * time.Millisecond
+	maxTime := 300 * time.Millisecond
 
 	r := &testRequest{
 		service: "test",
 		method:  "test",
 	}
 
-	fn := BackoffInterval(min, max)
+	fn := BackoffInterval(minTime, maxTime)
 	for i := 0; i < 5; i++ {
 		d, err := fn(context.TODO(), r, i)
 		if err != nil {
 			t.Fatal(err)
 		}
 
-		if d < min || d > max {
+		if d < minTime || d > maxTime {
-			t.Fatalf("Expected %v < %v < %v", min, d, max)
+			t.Fatalf("Expected %v < %v < %v", minTime, d, maxTime)
 		}
 	}
 }

client/noop.go

@@ -298,7 +298,7 @@ func (n *noopClient) fnCall(ctx context.Context, req Request, rsp interface{}, o
 		// call backoff first. Someone may want an initial start delay
 		t, err := callOpts.Backoff(ctx, req, i)
 		if err != nil {
-			return errors.InternalServerError("go.micro.client", err.Error())
+			return errors.InternalServerError("go.micro.client", "%s", err)
 		}
 
 		// only sleep if greater than 0
@@ -312,7 +312,7 @@ func (n *noopClient) fnCall(ctx context.Context, req Request, rsp interface{}, o
 			// TODO apply any filtering here
 			routes, err = n.opts.Lookup(ctx, req, callOpts)
 			if err != nil {
-				return errors.InternalServerError("go.micro.client", err.Error())
+				return errors.InternalServerError("go.micro.client", "%s", err)
 			}
 
 			// balance the list of nodes
@@ -372,7 +372,7 @@ func (n *noopClient) fnCall(ctx context.Context, req Request, rsp interface{}, o
 	return gerr
 }
 
-func (n *noopClient) NewRequest(service, endpoint string, req interface{}, opts ...RequestOption) Request {
+func (n *noopClient) NewRequest(service, endpoint string, _ interface{}, _ ...RequestOption) Request {
 	return &noopRequest{service: service, endpoint: endpoint}
 }
 
@@ -466,7 +466,7 @@ func (n *noopClient) fnStream(ctx context.Context, req Request, opts ...CallOpti
 		// call backoff first. Someone may want an initial start delay
 		t, cerr := callOpts.Backoff(ctx, req, i)
 		if cerr != nil {
-			return nil, errors.InternalServerError("go.micro.client", cerr.Error())
+			return nil, errors.InternalServerError("go.micro.client", "%s", cerr)
 		}
 
 		// only sleep if greater than 0
@@ -480,7 +480,7 @@ func (n *noopClient) fnStream(ctx context.Context, req Request, opts ...CallOpti
 			// TODO apply any filtering here
 			routes, err = n.opts.Lookup(ctx, req, callOpts)
 			if err != nil {
-				return nil, errors.InternalServerError("go.micro.client", err.Error())
+				return nil, errors.InternalServerError("go.micro.client", "%s", err)
 			}
 
 			// balance the list of nodes
@@ -546,7 +546,7 @@ func (n *noopClient) fnStream(ctx context.Context, req Request, opts ...CallOpti
 	return nil, grr
 }
 
-func (n *noopClient) stream(ctx context.Context, addr string, req Request, opts CallOptions) (Stream, error) {
+func (n *noopClient) stream(ctx context.Context, _ string, _ Request, _ CallOptions) (Stream, error) {
 	return &noopStream{ctx: ctx}, nil
 }
 
@@ -609,13 +609,13 @@ func (n *noopClient) publish(ctx context.Context, ps []Message, opts ...PublishO
 			// use codec for payload
 			cf, err := n.newCodec(p.ContentType())
 			if err != nil {
-				return errors.InternalServerError("go.micro.client", err.Error())
+				return errors.InternalServerError("go.micro.client", "%s", err)
 			}
 
 			// set the body
 			b, err := cf.Marshal(p.Payload())
 			if err != nil {
-				return errors.InternalServerError("go.micro.client", err.Error())
+				return errors.InternalServerError("go.micro.client", "%s", err)
 			}
 			body = b
 		}

client/options.go

@@ -21,6 +21,16 @@ import (
 
 // Options holds client options
 type Options struct {
+	// Codecs map
+	Codecs map[string]codec.Codec
+
+	// Proxy is used for proxy requests
+	Proxy string
+	// ContentType is used to select codec
+	ContentType string
+	// Name is the client name
+	Name string
+
 	// Selector used to select needed address
 	Selector selector.Selector
 	// Logger used to log messages
@@ -35,31 +45,28 @@ type Options struct {
 	Context context.Context
 	// Router used to get route
 	Router router.Router
+
 	// TLSConfig specifies tls.Config for secure connection
 	TLSConfig *tls.Config
-	// Codecs map
+
-	Codecs map[string]codec.Codec
 	// Lookup func used to get destination addr
 	Lookup LookupFunc
-	// Proxy is used for proxy requests
+	// ContextDialer used to connect
-	Proxy string
+	ContextDialer func(context.Context, string) (net.Conn, error)
-	// ContentType is used to select codec
+
-	ContentType string
-	// Name is the client name
-	Name string
 	// Wrappers contains wrappers
 	Wrappers []Wrapper
+	// Hooks can be run before broker Publish/BatchPublish and
+	// Subscribe/BatchSubscribe methods
+	Hooks options.Hooks
+
 	// CallOptions contains default CallOptions
 	CallOptions CallOptions
+
 	// PoolSize connection pool size
 	PoolSize int
 	// PoolTTL connection pool ttl
 	PoolTTL time.Duration
-	// ContextDialer used to connect
-	ContextDialer func(context.Context, string) (net.Conn, error)
-	// Hooks can be run before broker Publish/BatchPublish and
-	// Subscribe/BatchSubscribe methods
-	Hooks options.Hooks
 }
 
 // NewCallOptions creates new call options struct
@@ -73,6 +80,16 @@ func NewCallOptions(opts ...CallOption) CallOptions {
 
 // CallOptions holds client call options
 type CallOptions struct {
+	// RequestMetadata holds additional metadata for call
+	RequestMetadata metadata.Metadata
+
+	// Network name
+	Network string
+	// Content-Type
+	ContentType string
+	// AuthToken string
+	AuthToken string
+
 	// Selector selects addr
 	Selector selector.Selector
 	// Context used for deadline
@@ -80,33 +97,30 @@ type CallOptions struct {
 	// Router used for route
 	Router router.Router
 	// Retry func used for retries
+
+	// ResponseMetadata holds additional metadata from call
+	ResponseMetadata *metadata.Metadata
+
 	Retry RetryFunc
 	// Backoff func used for backoff when retry
 	Backoff BackoffFunc
-	// Network name
+	// ContextDialer used to connect
-	Network string
+	ContextDialer func(context.Context, string) (net.Conn, error)
-	// Content-Type
+
-	ContentType string
-	// AuthToken string
-	AuthToken string
 	// Address specifies static addr list
 	Address []string
 	// SelectOptions selector options
 	SelectOptions []selector.SelectOption
+
 	// StreamTimeout stream timeout
 	StreamTimeout time.Duration
 	// RequestTimeout request timeout
 	RequestTimeout time.Duration
-	// RequestMetadata holds additional metadata for call
+
-	RequestMetadata metadata.Metadata
-	// ResponseMetadata holds additional metadata from call
-	ResponseMetadata *metadata.Metadata
 	// DialTimeout dial timeout
 	DialTimeout time.Duration
 	// Retries specifies retries num
 	Retries int
-	// ContextDialer used to connect
-	ContextDialer func(context.Context, string) (net.Conn, error)
 }
 
 // ContextDialer pass ContextDialer to client

config/config.go

@@ -13,7 +13,7 @@ type Validator interface {
 }
 
 // DefaultConfig default config
-var DefaultConfig Config = NewConfig()
+var DefaultConfig = NewConfig()
 
 // DefaultWatcherMinInterval default min interval for poll changes
 var DefaultWatcherMinInterval = 5 * time.Second

config/default_test.go

@@ -3,6 +3,7 @@ package config_test
 import (
 	"context"
 	"fmt"
+	"reflect"
 	"testing"
 	"time"
 
@@ -12,15 +13,17 @@ import (
 )
 
 type cfg struct {
-	StringValue    string `default:"string_value"`
+	MapValue    map[string]bool `default:"key1=true,key2=false"`
-	IgnoreValue    string `json:"-"`
+	StructValue *cfgStructValue
-	StructValue    *cfgStructValue
+
-	IntValue       int             `default:"99"`
+	StringValue string `default:"string_value"`
-	DurationValue  time.Duration   `default:"10s"`
+	IgnoreValue string `json:"-"`
-	MDurationValue mtime.Duration  `default:"10s"`
+	UUIDValue   string `default:"micro:generate uuid"`
-	MapValue       map[string]bool `default:"key1=true,key2=false"`
+	IDValue     string `default:"micro:generate id"`
-	UUIDValue      string          `default:"micro:generate uuid"`
+
-	IDValue        string          `default:"micro:generate id"`
+	DurationValue  time.Duration  `default:"10s"`
+	MDurationValue mtime.Duration `default:"10s"`
+	IntValue       int            `default:"99"`
 }
 
 type cfgStructValue struct {
@@ -134,3 +137,13 @@ func TestValidate(t *testing.T) {
 		t.Fatal(err)
 	}
 }
+
+func Test_SizeOf(t *testing.T) {
+	st := cfg{}
+
+	tVal := reflect.TypeOf(st)
+	for i := 0; i < tVal.NumField(); i++ {
+		field := tVal.Field(i)
+		fmt.Printf("Field: %s, Offset: %d, Size: %d\n", field.Name, field.Offset, field.Type.Size())
+	}
+}

config/options.go

@@ -41,14 +41,16 @@ type Options struct {
 	BeforeInit []func(context.Context, Config) error
 	// AfterInit contains slice of funcs that runs after Init
 	AfterInit []func(context.Context, Config) error
-	// AllowFail flag to allow fail in config source
+
-	AllowFail bool
 	// SkipLoad runs only if condition returns true
 	SkipLoad func(context.Context, Config) bool
 	// SkipSave runs only if condition returns true
 	SkipSave func(context.Context, Config) bool
 	// Hooks can be run before/after config Save/Load
 	Hooks options.Hooks
+
+	// AllowFail flag to allow fail in config source
+	AllowFail bool
 }
 
 // Option function signature
@@ -278,10 +280,10 @@ func WatchCoalesce(b bool) WatchOption {
 }
 
 // WatchInterval specifies min and max time.Duration for pulling changes
-func WatchInterval(min, max time.Duration) WatchOption {
+func WatchInterval(minTime, maxTime time.Duration) WatchOption {
 	return func(o *WatchOptions) {
-		o.MinInterval = min
+		o.MinInterval = minTime
-		o.MaxInterval = max
+		o.MaxInterval = maxTime
 	}
 }
 

errors/errors_test.go

@@ -2,7 +2,7 @@ package errors
 
 import (
 	"encoding/json"
-	er "errors"
+	"errors"
 	"fmt"
 	"net/http"
 	"testing"
@@ -26,7 +26,7 @@ func TestMarshalJSON(t *testing.T) {
 func TestEmpty(t *testing.T) {
 	msg := "test"
 	var err *Error
-	err = FromError(fmt.Errorf(msg))
+	err = FromError(errors.New(msg))
 	if err.Detail != msg {
 		t.Fatalf("invalid error %v", err)
 	}
@@ -42,7 +42,7 @@ func TestFromError(t *testing.T) {
 	if merr.ID != "go.micro.test" || merr.Code != 404 {
 		t.Fatalf("invalid conversation %v != %v", err, merr)
 	}
-	err = er.New(err.Error())
+	err = errors.New(err.Error())
 	merr = FromError(err)
 	if merr.ID != "go.micro.test" || merr.Code != 404 {
 		t.Fatalf("invalid conversation %v != %v", err, merr)
@@ -57,7 +57,7 @@ func TestEqual(t *testing.T) {
 		t.Fatal("errors must be equal")
 	}
 
-	err3 := er.New("my test err")
+	err3 := errors.New("my test err")
 	if Equal(err1, err3) {
 		t.Fatal("errors must be not equal")
 	}

fsm/default.go

@@ -32,7 +32,7 @@ type fsm struct {
 
 // NewFSM creates a new finite state machine having the specified initial state
 // with specified options
-func NewFSM(opts ...Option) *fsm {
+func NewFSM(opts ...Option) FSM {
 	return &fsm{
 		statesMap: map[string]StateFunc{},
 		opts:      NewOptions(opts...),

go.mod

@@ -14,6 +14,7 @@ require (
 	golang.org/x/sync v0.3.0
 	google.golang.org/grpc v1.57.0
 	google.golang.org/protobuf v1.33.0
+	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (

go.sum

@@ -74,5 +74,7 @@ google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQ
 google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
 google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

logger/context.go

@@ -7,12 +7,12 @@ type loggerKey struct{}
 // MustContext returns logger from passed context or DefaultLogger if empty
 func MustContext(ctx context.Context) Logger {
 	if ctx == nil {
-		return DefaultLogger
+		return DefaultLogger.Clone()
 	}
 	if l, ok := ctx.Value(loggerKey{}).(Logger); ok && l != nil {
 		return l
 	}
-	return DefaultLogger
+	return DefaultLogger.Clone()
 }
 
 // FromContext returns logger from passed context

logger/logger.go

@@ -11,7 +11,7 @@ var DefaultContextAttrFuncs []ContextAttrFunc
 
 var (
 	// DefaultLogger variable
-	DefaultLogger Logger = NewLogger()
+	DefaultLogger = NewLogger()
 	// DefaultLevel used by logger
 	DefaultLevel = InfoLevel
 )

logger/options.go

@@ -15,18 +15,6 @@ type Option func(*Options)
 
 // Options holds logger options
 type Options struct {
-	// Out holds the output writer
-	Out io.Writer
-	// Context holds exernal options
-	Context context.Context
-	// Name holds the logger name
-	Name string
-	// Fields holds additional metadata
-	Fields []interface{}
-	// callerSkipCount number of frmaes to skip
-	CallerSkipCount int
-	// ContextAttrFuncs contains funcs that executed before log func on context
-	ContextAttrFuncs []ContextAttrFunc
 	// TimeKey is the key used for the time of the log call
 	TimeKey string
 	// LevelKey is the key used for the level of the log call
@@ -39,16 +27,31 @@ type Options struct {
 	SourceKey string
 	// StacktraceKey is the key used for the stacktrace
 	StacktraceKey string
-	// AddStacktrace controls writing of stacktaces on error
+	// Name holds the logger name
-	AddStacktrace bool
+	Name string
-	// AddSource enabled writing source file and position in log
+
-	AddSource bool
+	// Out holds the output writer
-	// The logging level the logger should log
+	Out io.Writer
-	Level Level
+	// Context holds exernal options
-	// TimeFunc used to obtain current time
+	Context context.Context
-	TimeFunc func() time.Time
 	// Meter used to count logs for specific level
 	Meter meter.Meter
+	// TimeFunc used to obtain current time
+	TimeFunc func() time.Time
+
+	// Fields holds additional metadata
+	Fields []interface{}
+	// ContextAttrFuncs contains funcs that executed before log func on context
+	ContextAttrFuncs []ContextAttrFunc
+
+	// callerSkipCount number of frmaes to skip
+	CallerSkipCount int
+	// The logging level the logger should log
+	Level Level
+	// AddSource enabled writing source file and position in log
+	AddSource bool
+	// AddStacktrace controls writing of stacktaces on error
+	AddStacktrace bool
 }
 
 // NewOptions creates new options struct
@@ -153,8 +156,8 @@ func WithTimeFunc(fn func() time.Time) Option {
 func WithZapKeys() Option {
 	return func(o *Options) {
 		o.TimeKey = "@timestamp"
-		o.LevelKey = "level"
+		o.LevelKey = slog.LevelKey
-		o.MessageKey = "msg"
+		o.MessageKey = slog.MessageKey
 		o.SourceKey = "caller"
 		o.StacktraceKey = "stacktrace"
 		o.ErrorKey = "error"
@@ -163,8 +166,8 @@ func WithZapKeys() Option {
 
 func WithZerologKeys() Option {
 	return func(o *Options) {
-		o.TimeKey = "time"
+		o.TimeKey = slog.TimeKey
-		o.LevelKey = "level"
+		o.LevelKey = slog.LevelKey
 		o.MessageKey = "message"
 		o.SourceKey = "caller"
 		o.StacktraceKey = "stacktrace"
@@ -186,8 +189,8 @@ func WithSlogKeys() Option {
 func WithMicroKeys() Option {
 	return func(o *Options) {
 		o.TimeKey = "timestamp"
-		o.LevelKey = "level"
+		o.LevelKey = slog.LevelKey
-		o.MessageKey = "msg"
+		o.MessageKey = slog.MessageKey
 		o.SourceKey = "caller"
 		o.StacktraceKey = "stacktrace"
 		o.ErrorKey = "error"

logger/slog/slog.go

@@ -46,11 +46,11 @@ func (h *wrapper) Handle(ctx context.Context, rec slog.Record) error {
 }
 
 func (h *wrapper) WithAttrs(attrs []slog.Attr) slog.Handler {
-	return h.WithAttrs(attrs)
+	return h.h.WithAttrs(attrs)
 }
 
 func (h *wrapper) WithGroup(name string) slog.Handler {
-	return h.WithGroup(name)
+	return h.h.WithGroup(name)
 }
 
 func (s *slogLogger) renameAttr(_ []string, a slog.Attr) slog.Attr {
@@ -89,7 +89,6 @@ func (s *slogLogger) renameAttr(_ []string, a slog.Attr) slog.Attr {
 }
 
 type slogLogger struct {
-	leveler *slog.LevelVar
 	handler *wrapper
 	opts    logger.Options
 	mu      sync.RWMutex
@@ -318,7 +317,7 @@ func (s *slogLogger) argsAttrs(args []interface{}) ([]slog.Attr, error) {
 		case string:
 			if idx+1 < len(args) {
 				attrs = append(attrs, slog.Any(arg, args[idx+1]))
-				idx += 1
+				idx++
 			} else {
 				attrs = append(attrs, slog.String(badKey, arg))
 			}

logger/slog/slog_test.go

@@ -10,9 +10,8 @@ import (
 	"testing"
 
 	"github.com/google/uuid"
-	"go.unistack.org/micro/v3/metadata"
-
 	"go.unistack.org/micro/v3/logger"
+	"go.unistack.org/micro/v3/metadata"
 )
 
 func TestWithAddFields(t *testing.T) {
@@ -115,7 +114,7 @@ func TestErrorf(t *testing.T) {
 
 	buf := bytes.NewBuffer(nil)
 	l := NewLogger(logger.WithLevel(logger.ErrorLevel), logger.WithOutput(buf), logger.WithAddStacktrace(true))
-	if err := l.Init(logger.WithContextAttrFuncs(func(ctx context.Context) []interface{} {
+	if err := l.Init(logger.WithContextAttrFuncs(func(_ context.Context) []interface{} {
 		return nil
 	})); err != nil {
 		t.Fatal(err)

logger/unwrap/unwrap.go

@@ -52,13 +52,15 @@ type protoMessage interface {
 }
 
 type Wrapper struct {
-	val              interface{}
+	pointers map[uintptr]int
-	s                fmt.State
+	takeMap  map[int]bool
-	pointers         map[uintptr]int
+
-	opts             *Options
+	val  interface{}
+	s    fmt.State
+	opts *Options
+
 	depth            int
 	ignoreNextType   bool
-	takeMap          map[int]bool
 	protoWrapperType bool
 	sqlWrapperType   bool
 }

logger/unwrap/unwrap_test.go

@@ -86,8 +86,8 @@ func TestTaggedNested(t *testing.T) {
 		unk string
 	}
 	type str struct {
-		key string `logger:"omit"`
 		val *val   `logger:"take"`
+		key string `logger:"omit"`
 	}
 
 	var iface interface{}

metadata/metadata_test.go

@@ -79,14 +79,14 @@ func TestPassing(t *testing.T) {
 
 	ctx = NewIncomingContext(ctx, md1)
 	testCtx(ctx)
-	md, ok := FromOutgoingContext(ctx)
+	_, ok := FromOutgoingContext(ctx)
 	if ok {
 		t.Fatalf("create outgoing context")
 	}
 
 	ctx = NewOutgoingContext(ctx, New(1))
 	testCtx(ctx)
-	md, ok = FromOutgoingContext(ctx)
+	md, ok := FromOutgoingContext(ctx)
 	if !ok {
 		t.Fatalf("missing metadata from outgoing context")
 	}
@@ -109,7 +109,7 @@ func TestMerge(t *testing.T) {
 	}
 }
 
-func TestIterator(t *testing.T) {
+func TestIterator(_ *testing.T) {
 	md := Metadata{
 		"1Last":   "last",
 		"2First":  "first",

meter/meter.go

@@ -11,7 +11,7 @@ import (
 
 var (
 	// DefaultMeter is the default meter
-	DefaultMeter Meter = NewMeter()
+	DefaultMeter = NewMeter()
 	// DefaultAddress data will be made available on this host:port
 	DefaultAddress = ":9090"
 	// DefaultPath the meter endpoint where the Meter data will be made available

meter/noop.go

@@ -37,32 +37,32 @@ func (r *noopMeter) Init(opts ...Option) error {
 }
 
 // Counter implements the Meter interface
-func (r *noopMeter) Counter(name string, labels ...string) Counter {
+func (r *noopMeter) Counter(_ string, labels ...string) Counter {
 	return &noopCounter{labels: labels}
 }
 
 // FloatCounter implements the Meter interface
-func (r *noopMeter) FloatCounter(name string, labels ...string) FloatCounter {
+func (r *noopMeter) FloatCounter(_ string, labels ...string) FloatCounter {
 	return &noopFloatCounter{labels: labels}
 }
 
 // Gauge implements the Meter interface
-func (r *noopMeter) Gauge(name string, f func() float64, labels ...string) Gauge {
+func (r *noopMeter) Gauge(_ string, _ func() float64, labels ...string) Gauge {
 	return &noopGauge{labels: labels}
 }
 
 // Summary implements the Meter interface
-func (r *noopMeter) Summary(name string, labels ...string) Summary {
+func (r *noopMeter) Summary(_ string, labels ...string) Summary {
 	return &noopSummary{labels: labels}
 }
 
 // SummaryExt implements the Meter interface
-func (r *noopMeter) SummaryExt(name string, window time.Duration, quantiles []float64, labels ...string) Summary {
+func (r *noopMeter) SummaryExt(_ string, _ time.Duration, _ []float64, labels ...string) Summary {
 	return &noopSummary{labels: labels}
 }
 
 // Histogram implements the Meter interface
-func (r *noopMeter) Histogram(name string, labels ...string) Histogram {
+func (r *noopMeter) Histogram(_ string, labels ...string) Histogram {
 	return &noopHistogram{labels: labels}
 }
 
@@ -77,7 +77,7 @@ func (r *noopMeter) Set(opts ...Option) Meter {
 	return m
 }
 
-func (r *noopMeter) Write(w io.Writer, opts ...Option) error {
+func (r *noopMeter) Write(_ io.Writer, _ ...Option) error {
 	return nil
 }
 

micro.go

@@ -76,19 +76,21 @@ func As(b any, target any) bool {
 	return false
 }
 
-var brokerType = reflect.TypeOf((*broker.Broker)(nil)).Elem()
+var (
-var loggerType = reflect.TypeOf((*logger.Logger)(nil)).Elem()
+	brokerType   = reflect.TypeOf((*broker.Broker)(nil)).Elem()
-var clientType = reflect.TypeOf((*client.Client)(nil)).Elem()
+	loggerType   = reflect.TypeOf((*logger.Logger)(nil)).Elem()
-var serverType = reflect.TypeOf((*server.Server)(nil)).Elem()
+	clientType   = reflect.TypeOf((*client.Client)(nil)).Elem()
-var codecType = reflect.TypeOf((*codec.Codec)(nil)).Elem()
+	serverType   = reflect.TypeOf((*server.Server)(nil)).Elem()
-var flowType = reflect.TypeOf((*flow.Flow)(nil)).Elem()
+	codecType    = reflect.TypeOf((*codec.Codec)(nil)).Elem()
-var fsmType = reflect.TypeOf((*fsm.FSM)(nil)).Elem()
+	flowType     = reflect.TypeOf((*flow.Flow)(nil)).Elem()
-var meterType = reflect.TypeOf((*meter.Meter)(nil)).Elem()
+	fsmType      = reflect.TypeOf((*fsm.FSM)(nil)).Elem()
-var registerType = reflect.TypeOf((*register.Register)(nil)).Elem()
+	meterType    = reflect.TypeOf((*meter.Meter)(nil)).Elem()
-var resolverType = reflect.TypeOf((*resolver.Resolver)(nil)).Elem()
+	registerType = reflect.TypeOf((*register.Register)(nil)).Elem()
-var routerType = reflect.TypeOf((*router.Router)(nil)).Elem()
+	resolverType = reflect.TypeOf((*resolver.Resolver)(nil)).Elem()
-var selectorType = reflect.TypeOf((*selector.Selector)(nil)).Elem()
+	routerType   = reflect.TypeOf((*router.Router)(nil)).Elem()
-var storeType = reflect.TypeOf((*store.Store)(nil)).Elem()
+	selectorType = reflect.TypeOf((*selector.Selector)(nil)).Elem()
-var syncType = reflect.TypeOf((*sync.Sync)(nil)).Elem()
+	storeType    = reflect.TypeOf((*store.Store)(nil)).Elem()
-var tracerType = reflect.TypeOf((*tracer.Tracer)(nil)).Elem()
+	syncType     = reflect.TypeOf((*sync.Sync)(nil)).Elem()
-var serviceType = reflect.TypeOf((*Service)(nil)).Elem()
+	tracerType   = reflect.TypeOf((*tracer.Tracer)(nil)).Elem()
+	serviceType  = reflect.TypeOf((*Service)(nil)).Elem()
+)

micro_test.go

@@ -18,26 +18,27 @@ func TestAs(t *testing.T) {
 	testCases := []struct {
 		b      any
 		target any
-		match  bool
 		want   any
+
+		match bool
 	}{
 		{
-			broTarget,
+			b:      broTarget,
-			&b,
+			target: &b,
-			true,
+			match:  true,
-			broTarget,
+			want:   broTarget,
 		},
 		{
-			nil,
+			b:      nil,
-			&b,
+			target: &b,
-			false,
+			match:  false,
-			nil,
+			want:   nil,
 		},
 		{
-			fsmTarget,
+			b:      fsmTarget,
-			&b,
+			target: &b,
-			false,
+			match:  false,
-			nil,
+			want:   nil,
 		},
 	}
 	for i, tc := range testCases {
@@ -72,7 +73,7 @@ func (p *bro) Ready() bool { return true }
 
 func (p *bro) Health() bool { return true }
 
-func (p *bro) Init(opts ...broker.Option) error { return nil }
+func (p *bro) Init(_ ...broker.Option) error { return nil }
 
 // Options returns broker options
 func (p *bro) Options() broker.Options { return broker.Options{} }
@@ -81,28 +82,28 @@ func (p *bro) Options() broker.Options { return broker.Options{} }
 func (p *bro) Address() string { return "" }
 
 // Connect connects to broker
-func (p *bro) Connect(ctx context.Context) error { return nil }
+func (p *bro) Connect(_ context.Context) error { return nil }
 
 // Disconnect disconnect from broker
-func (p *bro) Disconnect(ctx context.Context) error { return nil }
+func (p *bro) Disconnect(_ context.Context) error { return nil }
 
 // Publish message, msg can be single broker.Message or []broker.Message
-func (p *bro) Publish(ctx context.Context, topic string, msg *broker.Message, opts ...broker.PublishOption) error {
+func (p *bro) Publish(_ context.Context, _ string, _ *broker.Message, _ ...broker.PublishOption) error {
 	return nil
 }
 
 // BatchPublish messages to broker with multiple topics
-func (p *bro) BatchPublish(ctx context.Context, msgs []*broker.Message, opts ...broker.PublishOption) error {
+func (p *bro) BatchPublish(_ context.Context, _ []*broker.Message, _ ...broker.PublishOption) error {
 	return nil
 }
 
 // BatchSubscribe subscribes to topic messages via handler
-func (p *bro) BatchSubscribe(ctx context.Context, topic string, h broker.BatchHandler, opts ...broker.SubscribeOption) (broker.Subscriber, error) {
+func (p *bro) BatchSubscribe(_ context.Context, _ string, _ broker.BatchHandler, _ ...broker.SubscribeOption) (broker.Subscriber, error) {
 	return nil, nil
 }
 
 // Subscribe subscribes to topic message via handler
-func (p *bro) Subscribe(ctx context.Context, topic string, handler broker.Handler, opts ...broker.SubscribeOption) (broker.Subscriber, error) {
+func (p *bro) Subscribe(_ context.Context, _ string, _ broker.Handler, _ ...broker.SubscribeOption) (broker.Subscriber, error) {
 	return nil, nil
 }
 
@@ -113,9 +114,9 @@ type fsmT struct {
 	name string
 }
 
-func (f *fsmT) Start(ctx context.Context, a interface{}, o ...Option) (interface{}, error) {
+func (f *fsmT) Start(_ context.Context, _ interface{}, _ ...Option) (interface{}, error) {
 	return nil, nil
 }
-func (f *fsmT) Current() string                  { return f.name }
+func (f *fsmT) Current() string                 { return f.name }
-func (f *fsmT) Reset()                           {}
+func (f *fsmT) Reset()                          {}
-func (f *fsmT) State(s string, sf fsm.StateFunc) {}
+func (f *fsmT) State(_ string, _ fsm.StateFunc) {}

mtls/options.go

@@ -8,19 +8,20 @@ import (
 
 // CertificateOptions holds options for x509.CreateCertificate
 type CertificateOptions struct {
-	Organization          []string
-	OrganizationalUnit    []string
-	CommonName            string
-	OCSPServer            []string
-	IssuingCertificateURL []string
 	SerialNumber          *big.Int
 	NotAfter              time.Time
 	NotBefore             time.Time
-	SignatureAlgorithm    x509.SignatureAlgorithm
+	CommonName            string
-	PublicKeyAlgorithm    x509.PublicKeyAlgorithm
+	Organization          []string
+	OrganizationalUnit    []string
+	OCSPServer            []string
+	IssuingCertificateURL []string
 	ExtKeyUsage           []x509.ExtKeyUsage
-	KeyUsage              x509.KeyUsage
+
-	IsCA                  bool
+	SignatureAlgorithm x509.SignatureAlgorithm
+	PublicKeyAlgorithm x509.PublicKeyAlgorithm
+	KeyUsage           x509.KeyUsage
+	IsCA               bool
 }
 
 // CertificateOrganizationalUnit set OrganizationalUnit in certificate subject

network/transport/transport.go

@@ -10,7 +10,7 @@ import (
 
 var (
 	// DefaultTransport is the global default transport
-	DefaultTransport Transport = NewTransport()
+	DefaultTransport = NewTransport()
 	// DefaultDialTimeout the default dial timeout
 	DefaultDialTimeout = time.Second * 5
 )

network/tunnel/broker/broker.go

@@ -84,7 +84,7 @@ func (t *tunBroker) Disconnect(ctx context.Context) error {
 	return t.tunnel.Close(ctx)
 }
 
-func (t *tunBroker) BatchPublish(ctx context.Context, msgs []*broker.Message, opts ...broker.PublishOption) error {
+func (t *tunBroker) BatchPublish(ctx context.Context, msgs []*broker.Message, _ ...broker.PublishOption) error {
 	// TODO: this is probably inefficient, we might want to just maintain an open connection
 	// it may be easier to add broadcast to the tunnel
 	topicMap := make(map[string]tunnel.Session)
@@ -114,7 +114,7 @@ func (t *tunBroker) BatchPublish(ctx context.Context, msgs []*broker.Message, op
 	return nil
 }
 
-func (t *tunBroker) Publish(ctx context.Context, topic string, m *broker.Message, opts ...broker.PublishOption) error {
+func (t *tunBroker) Publish(ctx context.Context, topic string, m *broker.Message, _ ...broker.PublishOption) error {
 	// TODO: this is probably inefficient, we might want to just maintain an open connection
 	// it may be easier to add broadcast to the tunnel
 	c, err := t.tunnel.Dial(ctx, topic, tunnel.DialMode(tunnel.Multicast))

options.go

@@ -269,7 +269,7 @@ func Logger(l logger.Logger, opts ...LoggerOption) Option {
 				}
 			}
 		}
-		
+
 		for _, trc := range o.Tracers {
 			for _, ot := range lopts.tracers {
 				if trc.Name() == ot || all {

profiler/noop.go

@@ -15,6 +15,6 @@ func (p *noopProfiler) String() string {
 }
 
 // NewProfiler returns new noop profiler
-func NewProfiler(opts ...Option) Profiler {
+func NewProfiler(_ ...Option) Profiler {
 	return &noopProfiler{}
 }

profiler/profile.go

@@ -12,7 +12,7 @@ type Profiler interface {
 }
 
 // DefaultProfiler holds the default profiler
-var DefaultProfiler Profiler = NewProfiler()
+var DefaultProfiler = NewProfiler()
 
 // Options holds the options for profiler
 type Options struct {

register/memory/memory.go

@@ -31,10 +31,10 @@ type record struct {
 }
 
 type memory struct {
-	sync.RWMutex
 	records  map[string]services
 	watchers map[string]*watcher
 	opts     register.Options
+	sync.RWMutex
 }
 
 // services is a KV map with service name as the key and a map of records as the value
@@ -100,11 +100,11 @@ func (m *memory) sendEvent(r *register.Result) {
 	}
 }
 
-func (m *memory) Connect(ctx context.Context) error {
+func (m *memory) Connect(_ context.Context) error {
 	return nil
 }
 
-func (m *memory) Disconnect(ctx context.Context) error {
+func (m *memory) Disconnect(_ context.Context) error {
 	return nil
 }
 
@@ -124,7 +124,7 @@ func (m *memory) Options() register.Options {
 	return m.opts
 }
 
-func (m *memory) Register(ctx context.Context, s *register.Service, opts ...register.RegisterOption) error {
+func (m *memory) Register(_ context.Context, s *register.Service, opts ...register.RegisterOption) error {
 	m.Lock()
 	defer m.Unlock()
 
@@ -469,9 +469,7 @@ func serviceToRecord(s *register.Service, ttl time.Duration) *record {
 	}
 
 	endpoints := make([]*register.Endpoint, len(s.Endpoints))
-	for i, e := range s.Endpoints {
+	copy(endpoints, s.Endpoints)
-		endpoints[i] = e
-	}
 
 	return &record{
 		Name:      s.Name,

register/memory/memory_test.go

@@ -208,9 +208,9 @@ func TestMemoryRegistryTTLConcurrent(t *testing.T) {
 		}
 	}
 
-	//if len(os.Getenv("IN_TRAVIS_CI")) == 0 {
+	// if len(os.Getenv("IN_TRAVIS_CI")) == 0 {
 	//	t.Logf("test will wait %v, then check TTL timeouts", waitTime)
-	//}
+	// }
 
 	errChan := make(chan error, concurrency)
 	syncChan := make(chan struct{})
@@ -290,8 +290,12 @@ func TestWatcher(t *testing.T) {
 
 	ctx := context.TODO()
 	m := NewRegister()
-	m.Init()
+	if err := m.Init(); err != nil {
-	m.Connect(ctx)
+		t.Fatal(err)
+	}
+	if err := m.Connect(ctx); err != nil {
+		t.Fatal(err)
+	}
 	wc, err := m.Watch(ctx)
 	if err != nil {
 		t.Fatalf("cant watch: %v", err)

register/register.go

@@ -18,7 +18,7 @@ var DefaultDomain = "micro"
 
 var (
 	// DefaultRegister is the global default register
-	DefaultRegister Register = NewRegister()
+	DefaultRegister = NewRegister()
 	// ErrNotFound returned when LookupService is called and no services found
 	ErrNotFound = errors.New("service not found")
 	// ErrWatcherStopped returned when when watcher is stopped

resolver/noop/noop.go

@@ -9,6 +9,6 @@ import (
 type Resolver struct{}
 
 // Resolve returns the list of nodes
-func (r *Resolver) Resolve(name string) ([]*resolver.Record, error) {
+func (r *Resolver) Resolve(_ string) ([]*resolver.Record, error) {
 	return []*resolver.Record{}, nil
 }

router/router.go

@@ -7,7 +7,7 @@ import (
 
 var (
 	// DefaultRouter is the global default router
-	DefaultRouter Router = NewRouter()
+	DefaultRouter = NewRouter()
 	// DefaultNetwork is default micro network
 	DefaultNetwork = "micro"
 	// ErrRouteNotFound is returned when no route was found in the routing table

selector/random/random.go

@@ -25,7 +25,7 @@ func (r *random) Select(routes []string, opts ...selector.SelectOption) (selecto
 	}, nil
 }
 
-func (r *random) Record(addr string, err error) error {
+func (r *random) Record(_ string, _ error) error {
 	return nil
 }
 

selector/roundrobin/roundrobin.go

@@ -6,14 +6,14 @@ import (
 )
 
 // NewSelector returns an initialised round robin selector
-func NewSelector(opts ...selector.Option) selector.Selector {
+func NewSelector(_ ...selector.Option) selector.Selector {
 	return new(roundrobin)
 }
 
 type roundrobin struct{}
 
 // Select return routes based on algo
-func (r *roundrobin) Select(routes []string, opts ...selector.SelectOption) (selector.Next, error) {
+func (r *roundrobin) Select(routes []string, _ ...selector.SelectOption) (selector.Next, error) {
 	if len(routes) == 0 {
 		return nil, selector.ErrNoneAvailable
 	}
@@ -28,7 +28,7 @@ func (r *roundrobin) Select(routes []string, opts ...selector.SelectOption) (sel
 	}, nil
 }
 
-func (r *roundrobin) Record(addr string, err error) error { return nil }
+func (r *roundrobin) Record(_ string, _ error) error { return nil }
 
 func (r *roundrobin) Reset() error { return nil }
 

server/noop.go

@@ -776,13 +776,16 @@ func (s *subscriber) Options() SubscriberOptions {
 }
 
 type subscriber struct {
+	topic string
+
 	typ        reflect.Type
 	subscriber interface{}
-	topic      string
+
-	endpoints  []*register.Endpoint
+	endpoints []*register.Endpoint
-	handlers   []*handler
+	handlers  []*handler
-	opts       SubscriberOptions
+
-	rcvr       reflect.Value
+	rcvr reflect.Value
+	opts SubscriberOptions
 }
 
 type handler struct {

server/noop_test.go

@@ -38,7 +38,9 @@ func TestNoopSub(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	logger.DefaultLogger.Init(logger.WithLevel(logger.ErrorLevel))
+	if err := logger.DefaultLogger.Init(logger.WithLevel(logger.ErrorLevel)); err != nil {
+		t.Fatal(err)
+	}
 	s := server.NewServer(
 		server.Broker(b),
 		server.Codec("application/octet-stream", codec.NewCodec()),

server/options.go

@@ -24,36 +24,11 @@ type Option func(*Options)
 
 // Options server struct
 type Options struct {
-	// Context holds the external options and can be used for server shutdown
-	Context context.Context
-	// Broker holds the server broker
-	Broker broker.Broker
-	// Register holds the register
-	Register register.Register
-	// Tracer holds the tracer
-	Tracer tracer.Tracer
-	// Logger holds the logger
-	Logger logger.Logger
-	// Meter holds the meter
-	Meter meter.Meter
-
-	/*
-		// Router for requests
-		Router Router
-	*/
-
-	// Listener may be passed if already created
-	Listener net.Listener
-	// Wait group
-	Wait *msync.WaitGroup
-	// TLSConfig specifies tls.Config for secure serving
-	TLSConfig *tls.Config
-	// Metadata holds the server metadata
-	Metadata metadata.Metadata
-	// RegisterCheck run before register server
-	RegisterCheck func(context.Context) error
 	// Codecs map to handle content-type
 	Codecs map[string]codec.Codec
+	// Metadata holds the server metadata
+	Metadata metadata.Metadata
+
 	// ID holds the id of the server
 	ID string
 	// Namespace for te server
@@ -66,21 +41,46 @@ type Options struct {
 	Advertise string
 	// Version holds the server version
 	Version string
-	// RegisterAttempts holds the number of register attempts before error
+
-	RegisterAttempts int
+	// Context holds the external options and can be used for server shutdown
+	Context context.Context
+	// Broker holds the server broker
+	Broker broker.Broker
+	// Register holds the register
+	Register register.Register
+	// Tracer holds the tracer
+	Tracer tracer.Tracer
+	// Logger holds the logger
+	Logger logger.Logger
+	// Meter holds the meter
+	Meter meter.Meter
+	// Listener may be passed if already created
+	Listener net.Listener
+
+	// TLSConfig specifies tls.Config for secure serving
+	TLSConfig *tls.Config
+	// Wait group
+	Wait *msync.WaitGroup
+
+	// RegisterCheck run before register server
+	RegisterCheck func(context.Context) error
+
+	// Hooks may contains hook actions that performs before/after server handler
+	// or server subscriber handler
+	Hooks options.Hooks
+
 	// RegisterInterval holds he interval for re-register
 	RegisterInterval time.Duration
 	// RegisterTTL specifies TTL for register record
 	RegisterTTL time.Duration
+	// GracefulTimeout timeout for graceful stop server
+	GracefulTimeout time.Duration
 	// MaxConn limits number of connections
 	MaxConn int
 	// DeregisterAttempts holds the number of deregister attempts before error
 	DeregisterAttempts int
-	// Hooks may contains hook actions that performs before/after server handler
+	// RegisterAttempts holds the number of register attempts before error
-	// or server subscriber handler
+	RegisterAttempts int
-	Hooks options.Hooks
-	// GracefulTimeout timeout for graceful stop server
-	GracefulTimeout time.Duration
 }
 
 // NewOptions returns new options struct with default or passed values
@@ -318,14 +318,14 @@ type SubscriberOptions struct {
 	Context context.Context
 	// Queue holds the subscription queue
 	Queue string
+	// BatchWait flag specifies max wait time for batch filling
+	BatchWait time.Duration
+	// BatchSize flag specifies max size of batch
+	BatchSize int
 	// AutoAck flag for auto ack messages after processing
 	AutoAck bool
 	// BodyOnly flag specifies that message without headers
 	BodyOnly bool
-	// BatchSize flag specifies max size of batch
-	BatchSize int
-	// BatchWait flag specifies max wait time for batch filling
-	BatchWait time.Duration
 }
 
 // NewSubscriberOptions create new SubscriberOptions

server/server.go

@@ -12,7 +12,7 @@ import (
 
 // DefaultServer default server
 var (
-	DefaultServer Server = NewServer()
+	DefaultServer = NewServer()
 )
 
 var (

service.go

@@ -23,8 +23,10 @@ import (
 )
 
 func init() {
-	maxprocs.Set()
+	if _, err := maxprocs.Set(); err != nil {
-	memlimit.SetGoMemLimitWithOpts(
+		panic(err)
+	}
+	if _, err := memlimit.SetGoMemLimitWithOpts(
 		memlimit.WithRatio(0.9),
 		memlimit.WithProvider(
 			memlimit.ApplyFallback(
@@ -32,7 +34,9 @@ func init() {
 				memlimit.FromSystem,
 			),
 		),
-	)
+	); err != nil {
+		panic(err)
+	}
 
 	net.DefaultResolver = utildns.NewNetResolver(utildns.Timeout(1 * time.Second))
 }

service_test.go

@@ -121,8 +121,10 @@ func TestNewService(t *testing.T) {
 	}
 	tests := []struct {
 		name string
-		args args
+
 		want Service
+
+		args args
 	}{
 		{
 			name: "NewService",
@@ -146,9 +148,10 @@ func Test_service_Name(t *testing.T) {
 		opts Options
 	}
 	tests := []struct {
-		name   string
+		name string
+		want string
+
 		fields fields
-		want   string
 	}{
 		{
 			name: "Test_service_Name",
@@ -245,10 +248,12 @@ func Test_service_Broker(t *testing.T) {
 		names []string
 	}
 	tests := []struct {
-		name   string
+		name string
+
+		want broker.Broker
+
 		fields fields
 		args   args
-		want   broker.Broker
 	}{
 		{
 			name: "service.Broker",
@@ -301,10 +306,12 @@ func Test_service_Tracer(t *testing.T) {
 		names []string
 	}
 	tests := []struct {
-		name   string
+		name string
+
+		want tracer.Tracer
+
 		fields fields
 		args   args
-		want   tracer.Tracer
 	}{
 		{
 			name: "service.Tracer",
@@ -338,10 +345,11 @@ func Test_service_Config(t *testing.T) {
 		names []string
 	}
 	tests := []struct {
-		name   string
+		name string
+		want config.Config
+
 		fields fields
 		args   args
-		want   config.Config
 	}{
 		{
 			name: "service.Config",
@@ -375,10 +383,12 @@ func Test_service_Client(t *testing.T) {
 		names []string
 	}
 	tests := []struct {
-		name   string
+		name string
+
+		want client.Client
+
 		fields fields
 		args   args
-		want   client.Client
 	}{
 		{
 			name: "service.Client",
@@ -412,10 +422,12 @@ func Test_service_Server(t *testing.T) {
 		names []string
 	}
 	tests := []struct {
-		name   string
+		name string
+
+		want server.Server
+
 		fields fields
 		args   args
-		want   server.Server
 	}{
 		{
 			name: "service.Server",
@@ -449,10 +461,12 @@ func Test_service_Store(t *testing.T) {
 		names []string
 	}
 	tests := []struct {
-		name   string
+		name string
+
+		want store.Store
+
 		fields fields
 		args   args
-		want   store.Store
 	}{
 		{
 			name: "service.Store",
@@ -486,10 +500,12 @@ func Test_service_Register(t *testing.T) {
 		names []string
 	}
 	tests := []struct {
-		name   string
+		name string
+
+		want register.Register
+
 		fields fields
 		args   args
-		want   register.Register
 	}{
 		{
 			name: "service.Register",
@@ -523,10 +539,12 @@ func Test_service_Logger(t *testing.T) {
 		names []string
 	}
 	tests := []struct {
-		name   string
+		name string
+
+		want logger.Logger
+
 		fields fields
 		args   args
-		want   logger.Logger
 	}{
 		{
 			name: "service.Logger",
@@ -560,10 +578,12 @@ func Test_service_Router(t *testing.T) {
 		names []string
 	}
 	tests := []struct {
-		name   string
+		name string
+
+		want router.Router
+
 		fields fields
 		args   args
-		want   router.Router
 	}{
 		{
 			name: "service.Router",
@@ -597,10 +617,12 @@ func Test_service_Meter(t *testing.T) {
 		names []string
 	}
 	tests := []struct {
-		name   string
+		name string
+
+		want meter.Meter
+
 		fields fields
 		args   args
-		want   meter.Meter
 	}{
 		{
 			name: "service.Meter",
@@ -631,8 +653,8 @@ func Test_service_String(t *testing.T) {
 	}
 	tests := []struct {
 		name   string
-		fields fields
 		want   string
+		fields fields
 	}{
 		{
 			name: "service.String",

store/memory/memory.go

@@ -96,15 +96,15 @@ func (m *memoryStore) list(prefix string, limit, offset uint) []string {
 	if limit != 0 || offset != 0 {
 		sort.Slice(allKeys, func(i, j int) bool { return allKeys[i] < allKeys[j] })
 		sort.Slice(allKeys, func(i, j int) bool { return allKeys[i] < allKeys[j] })
-		end := len(allKeys)
+		end := uint(len(allKeys))
 		if limit > 0 {
-			calcLimit := int(offset + limit)
+			calcLimit := offset + limit
 			if calcLimit < end {
 				end = calcLimit
 			}
 		}
 
-		if int(offset) >= end {
+		if offset >= end {
 			return nil
 		}
 		return allKeys[offset:end]

store/noop.go

@@ -12,15 +12,18 @@ import (
 var _ Store = (*noopStore)(nil)
 
 type noopStore struct {
-	mu          sync.Mutex
+	watchers map[string]Watcher
-	watchers    map[string]Watcher
+
-	funcRead    FuncRead
+	funcRead   FuncRead
-	funcWrite   FuncWrite
+	funcWrite  FuncWrite
-	funcExists  FuncExists
+	funcExists FuncExists
-	funcList    FuncList
+	funcList   FuncList
-	funcDelete  FuncDelete
+	funcDelete FuncDelete
+
 	opts        Options
 	isConnected atomic.Int32
+
+	mu sync.Mutex
 }
 
 func (n *noopStore) Live() bool {
@@ -35,7 +38,7 @@ func (n *noopStore) Health() bool {
 	return true
 }
 
-func NewStore(opts ...Option) *noopStore {
+func NewStore(opts ...Option) Store {
 	options := NewOptions(opts...)
 	return &noopStore{opts: options}
 }
@@ -94,7 +97,7 @@ func (n *noopStore) Read(ctx context.Context, key string, val interface{}, opts
 	return n.funcRead(ctx, key, val, opts...)
 }
 
-func (n *noopStore) fnRead(ctx context.Context, key string, val interface{}, opts ...ReadOption) error {
+func (n *noopStore) fnRead(ctx context.Context, _ string, _ interface{}, _ ...ReadOption) error {
 	select {
 	case <-ctx.Done():
 		return ctx.Err()
@@ -112,7 +115,7 @@ func (n *noopStore) Delete(ctx context.Context, key string, opts ...DeleteOption
 	return n.funcDelete(ctx, key, opts...)
 }
 
-func (n *noopStore) fnDelete(ctx context.Context, key string, opts ...DeleteOption) error {
+func (n *noopStore) fnDelete(ctx context.Context, _ string, _ ...DeleteOption) error {
 	select {
 	case <-ctx.Done():
 		return ctx.Err()
@@ -130,7 +133,7 @@ func (n *noopStore) Exists(ctx context.Context, key string, opts ...ExistsOption
 	return n.funcExists(ctx, key, opts...)
 }
 
-func (n *noopStore) fnExists(ctx context.Context, key string, opts ...ExistsOption) error {
+func (n *noopStore) fnExists(ctx context.Context, _ string, _ ...ExistsOption) error {
 	select {
 	case <-ctx.Done():
 		return ctx.Err()
@@ -148,7 +151,7 @@ func (n *noopStore) Write(ctx context.Context, key string, val interface{}, opts
 	return n.funcWrite(ctx, key, val, opts...)
 }
 
-func (n *noopStore) fnWrite(ctx context.Context, key string, val interface{}, opts ...WriteOption) error {
+func (n *noopStore) fnWrite(ctx context.Context, _ string, _ interface{}, _ ...WriteOption) error {
 	select {
 	case <-ctx.Done():
 		return ctx.Err()
@@ -200,13 +203,13 @@ func (n *noopStore) connect(ctx context.Context) error {
 }
 
 type watcher struct {
+	opts WatchOptions
+	ch   chan Event
 	exit chan bool
 	id   string
-	ch   chan Event
-	opts WatchOptions
 }
 
-func (m *noopStore) Watch(ctx context.Context, opts ...WatchOption) (Watcher, error) {
+func (n *noopStore) Watch(_ context.Context, opts ...WatchOption) (Watcher, error) {
 	id, err := id.New()
 	if err != nil {
 		return nil, err
@@ -223,9 +226,9 @@ func (m *noopStore) Watch(ctx context.Context, opts ...WatchOption) (Watcher, er
 		opts: wo,
 	}
 
-	m.mu.Lock()
+	n.mu.Lock()
-	m.watchers[w.id] = w
+	n.watchers[w.id] = w
-	m.mu.Unlock()
+	n.mu.Unlock()
 
 	return w, nil
 }

store/options.go

@@ -15,6 +15,13 @@ import (
 
 // Options contains configuration for the Store
 type Options struct {
+	// Name specifies store name
+	Name string
+	// Namespace of the records
+	Namespace string
+	// Separator used as key parts separator
+	Separator string
+
 	// Meter used for metrics
 	Meter meter.Meter
 	// Tracer used for tracing
@@ -25,22 +32,17 @@ type Options struct {
 	Codec codec.Codec
 	// Logger used for logging
 	Logger logger.Logger
+
 	// TLSConfig holds tls.TLSConfig options
 	TLSConfig *tls.Config
-	// Name specifies store name
+
-	Name string
-	// Namespace of the records
-	Namespace string
-	// Separator used as key parts separator
-	Separator string
 	// Addrs contains store address
 	Addrs []string
-	// Wrappers store wrapper that called before actual functions
-	// Wrappers []Wrapper
-	// Timeout specifies timeout duration for all operations
-	Timeout time.Duration
 	// Hooks can be run before/after store Read/List/Write/Exists/Delete
 	Hooks options.Hooks
+
+	// Timeout specifies timeout duration for all operations
+	Timeout time.Duration
 	// LazyConnect creates a connection when using store
 	LazyConnect bool
 }

store/store.go

@@ -10,13 +10,13 @@ import (
 var (
 	ErrWatcherStopped = errors.New("watcher stopped")
 	// ErrNotConnected is returned when a store is not connected
-	ErrNotConnected = errors.New("not conected")
+	ErrNotConnected = errors.New("not connected")
 	// ErrNotFound is returned when a key doesn't exist
 	ErrNotFound = errors.New("not found")
 	// ErrInvalidKey is returned when a key has empty or have invalid format
 	ErrInvalidKey = errors.New("invalid key")
 	// DefaultStore is the global default store
-	DefaultStore Store = NewStore()
+	DefaultStore = NewStore()
 	// DefaultSeparator is the gloabal default key parts separator
 	DefaultSeparator = "/"
 )

sync/memory.go

@@ -6,9 +6,10 @@ import (
 )
 
 type memorySync struct {
-	mtx     gosync.RWMutex
 	locks   map[string]*memoryLock
 	options Options
+
+	mtx gosync.RWMutex
 }
 
 type memoryLock struct {

util/dns/cache.go

@@ -35,7 +35,7 @@ func NewNetDialer(parent DialFunc, opts ...Option) DialFunc {
 	if cache.opts.MaxCacheEntries == 0 {
 		cache.opts.MaxCacheEntries = DefaultMaxCacheEntries
 	}
-	return func(ctx context.Context, network, address string) (net.Conn, error) {
+	return func(_ context.Context, network, address string) (net.Conn, error) {
 		conn := &dnsConn{}
 		conn.roundTrip = cachingRoundTrip(&cache, network, address)
 		return conn, nil
@@ -116,12 +116,12 @@ func PreferIPV6(b bool) Option {
 }
 
 type cache struct {
-	sync.RWMutex
-
-	dial    DialFunc
 	entries map[string]cacheEntry
+	dial    DialFunc
 
 	opts Options
+
+	sync.RWMutex
 }
 
 type cacheEntry struct {
@@ -283,7 +283,7 @@ func getNameLen(msg string) int {
 	for i < len(msg) {
 		if msg[i] == 0 {
 			// end of name
-			i += 1
+			i++
 			break
 		}
 		if msg[i] >= 0xc0 {
@@ -311,7 +311,7 @@ func getUint32(s string) int {
 func cachingRoundTrip(cache *cache, network, address string) roundTripper {
 	return func(ctx context.Context, req string) (res string, err error) {
 		// check cache
-		if res := cache.get(req); res != "" {
+		if res = cache.get(req); res != "" {
 			return res, nil
 		}
 

util/dns/conn.go

@@ -11,15 +11,16 @@ import (
 )
 
 type dnsConn struct {
-	sync.Mutex
+	ctx       context.Context
+	cancel    context.CancelFunc
+	roundTrip roundTripper
+
+	deadline time.Time
 
 	ibuf bytes.Buffer
 	obuf bytes.Buffer
 
-	ctx       context.Context
+	sync.Mutex
-	cancel    context.CancelFunc
-	deadline  time.Time
-	roundTrip roundTripper
 }
 
 type roundTripper func(ctx context.Context, req string) (res string, err error)
@@ -66,8 +67,8 @@ func (c *dnsConn) RemoteAddr() net.Addr {
 }
 
 func (c *dnsConn) SetDeadline(t time.Time) error {
-	c.SetReadDeadline(t)
+	_ = c.SetReadDeadline(t)
-	c.SetWriteDeadline(t)
+	_ = c.SetWriteDeadline(t)
 	return nil
 }
 
@@ -78,7 +79,7 @@ func (c *dnsConn) SetReadDeadline(t time.Time) error {
 	return nil
 }
 
-func (c *dnsConn) SetWriteDeadline(t time.Time) error {
+func (c *dnsConn) SetWriteDeadline(_ time.Time) error {
 	// writes do not timeout
 	return nil
 }
@@ -156,23 +157,22 @@ func readMessage(c net.Conn) (string, error) {
 			return "", err
 		}
 		return string(b[:n]), nil
-	} else {
-		var sz [2]byte
-		_, err := io.ReadFull(c, sz[:])
-		if err != nil {
-			return "", err
-		}
-
-		size := int64(sz[0])<<8 | int64(sz[1])
-
-		var str strings.Builder
-		_, err = io.CopyN(&str, c, size)
-		if err == io.EOF {
-			return "", io.ErrUnexpectedEOF
-		}
-		if err != nil {
-			return "", err
-		}
-		return str.String(), nil
 	}
+	var sz [2]byte
+	_, err := io.ReadFull(c, sz[:])
+	if err != nil {
+		return "", err
+	}
+
+	size := int64(sz[0])<<8 | int64(sz[1])
+
+	var str strings.Builder
+	_, err = io.CopyN(&str, c, size)
+	if err == io.EOF {
+		return "", io.ErrUnexpectedEOF
+	}
+	if err != nil {
+		return "", err
+	}
+	return str.String(), nil
 }

util/grpc/tracer.go

@@ -71,7 +71,7 @@ func (h *serverHandler) HandleRPC(ctx context.Context, rs stats.RPCStats) {
 }
 
 // TagConn can attach some information to the given context.
-func (h *serverHandler) TagConn(ctx context.Context, info *stats.ConnTagInfo) context.Context {
+func (h *serverHandler) TagConn(ctx context.Context, _ *stats.ConnTagInfo) context.Context {
 	if span, ok := tracer.SpanFromContext(ctx); ok {
 		attrs := peerAttr(peerFromCtx(ctx))
 		span.AddLabels(attrs...)
@@ -80,7 +80,7 @@ func (h *serverHandler) TagConn(ctx context.Context, info *stats.ConnTagInfo) co
 }
 
 // HandleConn processes the Conn stats.
-func (h *serverHandler) HandleConn(ctx context.Context, info stats.ConnStats) {
+func (h *serverHandler) HandleConn(_ context.Context, _ stats.ConnStats) {
 }
 
 type clientHandler struct {

util/http/trie.go

@@ -665,12 +665,12 @@ func patParamKeys(pattern string) ([]string, error) {
 // longestPrefix finds the length of the shared prefix
 // of two strings
 func longestPrefix(k1, k2 string) int {
-	max := len(k1)
+	maxLen := len(k1)
-	if l := len(k2); l < max {
+	if l := len(k2); l < maxLen {
-		max = l
+		maxLen = l
 	}
 	var i int
-	for i = 0; i < max; i++ {
+	for i = 0; i < maxLen; i++ {
 		if k1[i] != k2[i] {
 			break
 		}

util/jitter/random.go

@@ -14,7 +14,7 @@ func Random(d time.Duration) time.Duration {
 	return time.Duration(v)
 }
 
-func RandomInterval(min, max time.Duration) time.Duration {
+func RandomInterval(minTime, maxTime time.Duration) time.Duration {
 	var rng rand.Rand
-	return time.Duration(rng.Int63n(max.Nanoseconds()-min.Nanoseconds())+min.Nanoseconds()) * time.Nanosecond
+	return time.Duration(rng.Int63n(maxTime.Nanoseconds()-minTime.Nanoseconds())+minTime.Nanoseconds()) * time.Nanosecond
 }

util/jitter/ticker.go

@@ -24,12 +24,12 @@ type Ticker struct {
 // NewTickerContext returns a pointer to an initialized instance of the Ticker.
 // It works like NewTicker except that it has ability to close via context.
 // Also it works fine with context.WithTimeout to handle max time to run ticker.
-func NewTickerContext(ctx context.Context, min, max time.Duration) *Ticker {
+func NewTickerContext(ctx context.Context, minTime, maxTime time.Duration) *Ticker {
 	ticker := &Ticker{
 		C:    make(chan time.Time),
 		done: make(chan chan struct{}),
-		min:  min.Nanoseconds(),
+		min:  minTime.Nanoseconds(),
-		max:  max.Nanoseconds(),
+		max:  maxTime.Nanoseconds(),
 		ctx:  ctx,
 	}
 	go ticker.run()
@@ -39,12 +39,12 @@ func NewTickerContext(ctx context.Context, min, max time.Duration) *Ticker {
 // NewTicker returns a pointer to an initialized instance of the Ticker.
 // Min and max are durations of the shortest and longest allowed
 // ticks. Ticker will run in a goroutine until explicitly stopped.
-func NewTicker(min, max time.Duration) *Ticker {
+func NewTicker(minTime, maxTime time.Duration) *Ticker {
 	ticker := &Ticker{
 		C:    make(chan time.Time),
 		done: make(chan chan struct{}),
-		min:  min.Nanoseconds(),
+		min:  minTime.Nanoseconds(),
-		max:  max.Nanoseconds(),
+		max:  maxTime.Nanoseconds(),
 		ctx:  context.Background(),
 	}
 	go ticker.run()

util/jitter/ticker_test.go

@@ -31,26 +31,26 @@ loop:
 func TestTicker(t *testing.T) {
 	t.Parallel()
 
-	min := time.Duration(10)
+	minTime := time.Duration(10)
-	max := time.Duration(20)
+	maxTime := time.Duration(20)
 
 	// tick can take a little longer since we're not adjusting it to account for
 	// processing.
 	precision := time.Duration(4)
 
-	rt := NewTicker(min*time.Millisecond, max*time.Millisecond)
+	rt := NewTicker(minTime*time.Millisecond, maxTime*time.Millisecond)
 	for i := 0; i < 5; i++ {
 		t0 := time.Now()
 		t1 := <-rt.C
 		td := t1.Sub(t0)
-		if td < min*time.Millisecond {
+		if td < minTime*time.Millisecond {
 			t.Fatalf("tick was shorter than expected: %s", td)
-		} else if td > (max+precision)*time.Millisecond {
+		} else if td > (maxTime+precision)*time.Millisecond {
 			t.Fatalf("tick was longer than expected: %s", td)
 		}
 	}
 	rt.Stop()
-	time.Sleep((max + precision) * time.Millisecond)
+	time.Sleep((maxTime + precision) * time.Millisecond)
 	select {
 	case v, ok := <-rt.C:
 		if ok || !v.IsZero() {

util/net/net.go

@@ -48,19 +48,19 @@ func Listen(addr string, fn func(string) (net.Listener, error)) (net.Listener, e
 	// we have a port range
 
 	// extract min port
-	min, err := strconv.Atoi(prange[0])
+	minPort, err := strconv.Atoi(prange[0])
 	if err != nil {
 		return nil, errors.New("unable to extract port range")
 	}
 
 	// extract max port
-	max, err := strconv.Atoi(prange[1])
+	maxPort, err := strconv.Atoi(prange[1])
 	if err != nil {
 		return nil, errors.New("unable to extract port range")
 	}
 
 	// range the ports
-	for port := min; port <= max; port++ {
+	for port := minPort; port <= maxPort; port++ {
 		// try bind to host:port
 		ln, err := fn(HostPort(host, port))
 		if err == nil {
@@ -68,7 +68,7 @@ func Listen(addr string, fn func(string) (net.Listener, error)) (net.Listener, e
 		}
 
 		// hit max port
-		if port == max {
+		if port == maxPort {
 			return nil, err
 		}
 	}

util/reflect/path.go

@@ -155,7 +155,7 @@ func indexFunction(v reflect.Value) func(i int) reflect.Value {
 			return v.MapIndex(keys[i])
 		}
 	}
-	return func(i int) reflect.Value { return reflect.Value{} }
+	return func(_ int) reflect.Value { return reflect.Value{} }
 }
 
 func mergeValue(values []reflect.Value) reflect.Value {

util/reflect/reflect_test.go

@@ -101,16 +101,16 @@ func TestMergeString(t *testing.T) {
 
 func TestMergeNested(t *testing.T) {
 	type CallReqNested struct {
+		Nested     *CallReqNested `json:"nested2"`
 		StringArgs []string       `json:"string_args"`
 		Uint64Args []uint64       `json:"uint64_args"`
-		Nested     *CallReqNested `json:"nested2"`
 	}
 
 	type CallReq struct {
+		Nested *CallReqNested `json:"nested"`
 		Name   string         `json:"name"`
 		Req    string         `json:"req"`
 		Arg2   int            `json:"arg2"`
-		Nested *CallReqNested `json:"nested"`
 	}
 
 	dst := &CallReq{

util/register/util.go

@@ -109,12 +109,11 @@ func Merge(olist []*register.Service, nlist []*register.Service) []*register.Ser
 				seen = true
 				srv = append(srv, sp)
 				break
-			} else {
-				sp := &register.Service{}
-				// make copy
-				*sp = *o
-				srv = append(srv, sp)
 			}
+			sp := &register.Service{}
+			// make copy
+			*sp = *o
+			srv = append(srv, sp)
 		}
 		if !seen {
 			srv = append(srv, Copy([]*register.Service{n})...)
@@ -153,14 +152,14 @@ func Remove(old, del []*register.Service) []*register.Service {
 
 // WaitService using register wait for service to appear with min/max interval for check and optional timeout.
 // Timeout can be 0 to wait infinitive.
-func WaitService(ctx context.Context, reg register.Register, name string, min time.Duration, max time.Duration, timeout time.Duration, opts ...register.LookupOption) error {
+func WaitService(ctx context.Context, reg register.Register, name string, minTime time.Duration, maxTime time.Duration, timeout time.Duration, opts ...register.LookupOption) error {
 	if timeout > 0 {
 		var cancel context.CancelFunc
 		ctx, cancel = context.WithTimeout(ctx, timeout)
 		defer cancel()
 	}
 
-	ticker := jitter.NewTickerContext(ctx, min, max)
+	ticker := jitter.NewTickerContext(ctx, minTime, maxTime)
 	defer ticker.Stop()
 
 	for {

util/ring/buffer.go

@@ -10,10 +10,11 @@ import (
 
 // Buffer is ring buffer
 type Buffer struct {
-	sync.RWMutex
 	streams map[string]*Stream
 	vals    []*Entry
 	size    int
+
+	sync.RWMutex
 }
 
 // Entry is ring buffer data entry

util/socket/pool.go

@@ -6,8 +6,8 @@ import (
 
 // Pool holds the socket pool
 type Pool struct {
-	sync.RWMutex
 	pool map[string]*Socket
+	sync.RWMutex
 }
 
 // Get socket from pool

util/stream/stream.go

@@ -20,10 +20,11 @@ type Stream interface {
 }
 
 type stream struct {
-	sync.RWMutex
 	Stream
 	err     error
 	request *request
+
+	sync.RWMutex
 }
 
 type request struct {

util/structfs/metadata_digitalocean.go

@@ -10,11 +10,18 @@ import (
 type DigitalOceanMetadata struct {
 	Metadata struct {
 		V1 struct {
-			DropletID  int64    `json:"droplet_id"`
+			Features map[string]interface{} `json:"features"`
-			Hostname   string   `json:"hostname"`
+
-			VendorData string   `json:"vendor_data"`
+			Hostname   string `json:"hostname"`
+			VendorData string `json:"vendor_data"`
+			Region     string `json:"region"`
+
 			PublicKeys []string `json:"public_keys"`
-			Region     string   `json:"region"`
+
+			DNS struct {
+				Nameservers []string `json:"nameservers"`
+			} `json:"dns"`
+
 			Interfaces struct {
 				Private []struct {
 					IPv4 struct {
@@ -31,24 +38,23 @@ type DigitalOceanMetadata struct {
 						Netmask string `json:"netmask"`
 						Gateway string `json:"gateway"`
 					} `json:"ipv4"`
-					IPv6 struct {
-						Address string `json:"ip_address"`
-						CIDR    int    `json:"cidr"`
-						Gateway string `json:"gateway"`
-					} `json:"ipv6"`
 					Mac  string `json:"mac"`
 					Type string `json:"type"`
+					IPv6 struct {
+						Address string `json:"ip_address"`
+						Gateway string `json:"gateway"`
+						CIDR    int    `json:"cidr"`
+					} `json:"ipv6"`
 				} `json:"public"`
 			} `json:"interfaces"`
+
+			DropletID int64 `json:"droplet_id"`
+
 			FloatingIP struct {
 				IPv4 struct {
 					Active bool `json:"active"`
 				} `json:"ipv4"`
 			} `json:"floating_ip"`
-			DNS struct {
-				Nameservers []string `json:"nameservers"`
-			} `json:"dns"`
-			Features map[string]interface{} `json:"features"`
 		} `json:"v1"`
 	} `json:"metadata"`
 }
@@ -56,7 +62,7 @@ type DigitalOceanMetadata struct {
 func (stfs *DigitalOceanMetadata) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	switch r.URL.Path {
 	case "/metadata/v1.json":
-		json.NewEncoder(w).Encode(stfs.Metadata.V1)
+		_ = json.NewEncoder(w).Encode(stfs.Metadata.V1)
 	default:
 		fs := FileServer(stfs, "json", time.Now())
 		idx := strings.Index(r.URL.Path[1:], "/")

util/structfs/metadata_ec2.go

@@ -2,29 +2,29 @@ package structfs
 
 type EC2Metadata struct {
 	Latest struct {
+		Userdata string `json:"user-data"`
 		Metadata struct {
-			AMIID              int      `json:"ami-id"`
+			AMIManifestPath  string `json:"ami-manifest-path"`
-			AMILaunchIndex     int      `json:"ami-launch-index"`
+			InstanceType     string `json:"instance-type"`
-			AMIManifestPath    string   `json:"ami-manifest-path"`
+			LocalHostname    string `json:"local-hostname"`
-			AncestorAMIIDs     []int    `json:"ancestor-ami-ids"`
+			LocalIPv4        string `json:"local-ipv4"`
-			BlockDeviceMapping []string `json:"block-device-mapping"`
+			Placement        string `json:"placement"`
-			InstanceID         int      `json:"instance-id"`
+			AvailabilityZone string `json:"availability-zone"`
-			InstanceType       string   `json:"instance-type"`
+			ProductCodes     string `json:"product-codes"`
-			LocalHostname      string   `json:"local-hostname"`
+			PublicHostname   string `json:"public-hostname"`
-			LocalIPv4          string   `json:"local-ipv4"`
+			PublicIPv4       string `json:"public-ipv4"`
-			kernelID           int      `json:"kernel-id"`
+			PublicKeys       []struct {
-			Placement          string   `json:"placement"`
-			AvailabilityZone   string   `json:"availability-zone"`
-			ProductCodes       string   `json:"product-codes"`
-			PublicHostname     string   `json:"public-hostname"`
-			PublicIPv4         string   `json:"public-ipv4"`
-			PublicKeys         []struct {
 				Key []string `json:"-"`
 			} `json:"public-keys"`
-			RamdiskID      int      `json:"ramdisk-id"`
+			AncestorAMIIDs     []int    `json:"ancestor-ami-ids"`
-			ReservationID  int      `json:"reservation-id"`
+			BlockDeviceMapping []string `json:"block-device-mapping"`
-			SecurityGroups []string `json:"security-groups"`
+			SecurityGroups     []string `json:"security-groups"`
+			RamdiskID          int      `json:"ramdisk-id"`
+			ReservationID      int      `json:"reservation-id"`
+			AMIID              int      `json:"ami-id"`
+			AMILaunchIndex     int      `json:"ami-launch-index"`
+			kernelID           int      `json:"kernel-id"`
+			InstanceID         int      `json:"instance-id"`
 		} `json:"meta-data"`
-		Userdata string `json:"user-data"`
 	} `json:"latest"`
 }

util/structfs/structfs.go

@@ -27,7 +27,7 @@ func (fs *fs) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	f, err := fs.Open(r.URL.Path)
 	if err != nil {
 		w.WriteHeader(http.StatusInternalServerError)
-		w.Write([]byte(err.Error()))
+		_, _ = w.Write([]byte(err.Error()))
 		return
 	}
 	w.Header().Set("Content-Type", "application/octet-stream")
@@ -35,22 +35,22 @@ func (fs *fs) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 }
 
 type fs struct {
+	modtime time.Time
 	iface   interface{}
 	tag     string
-	modtime time.Time
 }
 
 type file struct {
-	name    string
-	offset  int64
-	data    []byte
 	modtime time.Time
+	name    string
+	data    []byte
+	offset  int64
 }
 
 type fileInfo struct {
+	modtime time.Time
 	name    string
 	size    int64
-	modtime time.Time
 }
 
 func (fi *fileInfo) Sys() interface{} {
@@ -67,9 +67,9 @@ func (fi *fileInfo) Name() string {
 
 func (fi *fileInfo) Mode() os.FileMode {
 	if strings.HasSuffix(fi.name, "/") {
-		return os.FileMode(0755) | os.ModeDir
+		return os.FileMode(0o755) | os.ModeDir
 	}
-	return os.FileMode(0644)
+	return os.FileMode(0o644)
 }
 
 func (fi *fileInfo) IsDir() bool {
@@ -105,22 +105,21 @@ func (f *file) Read(b []byte) (int, error) {
 	return n, err
 }
 
-func (f *file) Readdir(count int) ([]os.FileInfo, error) {
+func (f *file) Readdir(_ int) ([]os.FileInfo, error) {
 	return nil, nil
 }
 
 func (f *file) Seek(offset int64, whence int) (int64, error) {
 	//	log.Printf("seek %d %d %s\n", offset, whence, f.name)
 	switch whence {
-	case os.SEEK_SET:
+	case io.SeekStart:
 		f.offset = offset
-	case os.SEEK_CUR:
+	case io.SeekCurrent:
 		f.offset += offset
-	case os.SEEK_END:
+	case io.SeekEnd:
 		f.offset = int64(len(f.data)) + offset
 	}
 	return f.offset, nil
-
 }
 
 func (f *file) Stat() (os.FileInfo, error) {

util/structfs/structfs_test.go

@@ -2,7 +2,7 @@ package structfs
 
 import (
 	"encoding/json"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"reflect"
 	"testing"
@@ -82,17 +82,17 @@ func get(path string) ([]byte, error) {
 		return nil, err
 	}
 	defer res.Body.Close()
-	return ioutil.ReadAll(res.Body)
+	return io.ReadAll(res.Body)
 }
 
 func TestAll(t *testing.T) {
 	server(t)
 
-	var tests = []struct {
+	tests := []struct {
 		in  string
 		out string
 	}{
-		{"http://127.0.0.1:8080/metadata/v1/", "droplet_id\nhostname\nvendor_data\npublic_keys\nregion\ninterfaces\nfloating_ip\ndns\nfeatures"},
+		{"http://127.0.0.1:8080/metadata/v1/", "features\nhostname\nvendor_data\nregion\npublic_keys\ndns\ninterfaces\ndroplet_id\nfloating_ip"},
 		{"http://127.0.0.1:8080/metadata/v1/droplet_id", "2756294"},
 		{"http://127.0.0.1:8080/metadata/v1/dns/", "nameservers"},
 		{"http://127.0.0.1:8080/metadata/v1/dns/nameservers", "2001:4860:4860::8844\n2001:4860:4860::8888\n8.8.8.8"},

util/test/test.go

@@ -78,8 +78,8 @@ var (
 			for _, se := range st.Details() {
 				switch ne := se.(type) {
 				case proto.Message:
-					buf, err := testCodec.Marshal(ne)
+					var buf []byte
-					if err != nil {
+					if buf, err = testCodec.Marshal(ne); err != nil {
 						return fmt.Errorf("failed to marshal err: %w", err)
 					}
 					if err = testCodec.Unmarshal(buf, &testMap); err != nil {
@@ -438,10 +438,10 @@ func Run(ctx context.Context, c client.Client, m sqlmock.Sqlmock, dir string, ex
 }
 
 type Case struct {
-	dbfiles []string
 	reqfile string
 	rspfile string
 	errfile string
+	dbfiles []string
 }
 
 func GetCases(dir string, exts []string) ([]Case, error) {

util/text/text.go

@@ -1,6 +1,5 @@
 package text
 
-
 func DetectEncoding(text string) map[string]int {
 	charsets := map[string]int{
 		"UTF-8":      0,
@@ -19,7 +18,7 @@ func DetectEncoding(text string) map[string]int {
 	utfupper := 5
 	lowercase := 3
 	uppercase := 1
-	last_simb := 0
+	lastSimb := 0
 
 	for a := 0; a < len(text); a++ {
 		char := int(text[a])
@@ -30,10 +29,10 @@ func DetectEncoding(text string) map[string]int {
 		}
 
 		// UTF-8
-		if (last_simb == 208) && ((char > 143 && char < 176) || char == 129) {
+		if (lastSimb == 208) && ((char > 143 && char < 176) || char == 129) {
 			charsets["UTF-8"] += (utfupper * 2)
 		}
-		if ((last_simb == 208) && ((char > 175 && char < 192) || char == 145)) || (last_simb == 209 && char > 127 && char < 144) {
+		if ((lastSimb == 208) && ((char > 175 && char < 192) || char == 145)) || (lastSimb == 209 && char > 127 && char < 144) {
 			charsets["UTF-8"] += (utflower * 2)
 		}
 
@@ -77,7 +76,7 @@ func DetectEncoding(text string) map[string]int {
 			charsets["MAC"] += uppercase
 		}
 
-	  last_simb = char
+		lastSimb = char
 	}
 
 	return charsets

util/time/duration.go

@@ -2,7 +2,6 @@ package time
 
 import (
 	"encoding/json"
-	"errors"
 	"fmt"
 	"strconv"
 	"time"
@@ -14,7 +13,7 @@ type Duration int64
 
 func ParseDuration(s string) (time.Duration, error) {
 	if s == "" {
-		return 0, fmt.Errorf(`time: invalid duration "` + s + `"`)
+		return 0, fmt.Errorf(`time: invalid duration "%s"`, s)
 	}
 
 	var p int
@@ -27,21 +26,21 @@ loop:
 		case 'h':
 			d, err := strconv.Atoi(s[p:i])
 			if err != nil {
-				return 0, errors.New("time: invalid duration " + s)
+				return 0, fmt.Errorf(`time: invalid duration "%s"`, s)
 			}
 			hours += d
 			p = i + 1
 		case 'd':
 			d, err := strconv.Atoi(s[p:i])
 			if err != nil {
-				return 0, errors.New("time: invalid duration " + s)
+				return 0, fmt.Errorf(`time: invalid duration "%s"`, s)
 			}
 			hours += d * 24
 			p = i + 1
 		case 'y':
 			n, err := strconv.Atoi(s[p:i])
 			if err != nil {
-				return 0, errors.New("time: invalid duration " + s)
+				return 0, fmt.Errorf(`time: invalid duration "%s"`, s)
 			}
 			var d int
 			for j := n - 1; j >= 0; j-- {

util/xpool/pool.go

@@ -39,19 +39,16 @@ func newStatsMeter() {
 	ticker := time.NewTicker(meter.DefaultMeterStatsInterval)
 	defer ticker.Stop()
 
-	for {
+	for range ticker.C {
-		select {
+		poolsMu.Lock()
-		case <-ticker.C:
+		for _, st := range pools {
-			poolsMu.Lock()
+			stats := st.Stats()
-			for _, st := range pools {
+			meter.DefaultMeter.Counter(semconv.PoolGetTotal, "capacity", strconv.Itoa(st.Cap())).Set(stats.Get)
-				stats := st.Stats()
+			meter.DefaultMeter.Counter(semconv.PoolPutTotal, "capacity", strconv.Itoa(st.Cap())).Set(stats.Put)
-				meter.DefaultMeter.Counter(semconv.PoolGetTotal, "capacity", strconv.Itoa(st.Cap())).Set(stats.Get)
+			meter.DefaultMeter.Counter(semconv.PoolMisTotal, "capacity", strconv.Itoa(st.Cap())).Set(stats.Mis)
-				meter.DefaultMeter.Counter(semconv.PoolPutTotal, "capacity", strconv.Itoa(st.Cap())).Set(stats.Put)
+			meter.DefaultMeter.Counter(semconv.PoolRetTotal, "capacity", strconv.Itoa(st.Cap())).Set(stats.Ret)
-				meter.DefaultMeter.Counter(semconv.PoolMisTotal, "capacity", strconv.Itoa(st.Cap())).Set(stats.Mis)
-				meter.DefaultMeter.Counter(semconv.PoolRetTotal, "capacity", strconv.Itoa(st.Cap())).Set(stats.Ret)
-			}
-			poolsMu.Unlock()
 		}
+		poolsMu.Unlock()
 	}
 }