fix golint issues, else blocks (#457)

core/bloom/bloom.go

@@ -127,11 +127,12 @@ func (r *redisBitSet) check(offsets []uint) (bool, error) {
 		return false, err
 	}
 
-	if exists, ok := resp.(int64); !ok {
+	exists, ok := resp.(int64)
+	if !ok {
 		return false, nil
-	} else {
-		return exists == 1, nil
 	}
+
+	return exists == 1, nil
 }
 
 func (r *redisBitSet) del() error {
@@ -152,7 +153,7 @@ func (r *redisBitSet) set(offsets []uint) error {
 	_, err = r.store.Eval(setScript, []string{r.key}, args)
 	if err == redis.Nil {
 		return nil
-	} else {
-		return err
 	}
+
+	return err
 }

core/breaker/googlebreaker.go

@@ -64,9 +64,9 @@ func (b *googleBreaker) doReq(req func() error, fallback func(err error) error,
 	if err := b.accept(); err != nil {
 		if fallback != nil {
 			return fallback(err)
-		} else {
-			return err
 		}
+
+		return err
 	}
 
 	defer func() {

core/codec/aesecb.go

@@ -150,11 +150,12 @@ func getKeyBytes(key string) ([]byte, error) {
 		return []byte(key), nil
 	}
 
-	if keyBytes, err := base64.StdEncoding.DecodeString(key); err != nil {
+	keyBytes, err := base64.StdEncoding.DecodeString(key)
+	if err != nil {
 		return nil, err
-	} else {
-		return keyBytes, nil
 	}
+
+	return keyBytes, nil
 }
 
 func pkcs5Padding(ciphertext []byte, blockSize int) []byte {

core/collection/cache.go

@@ -136,11 +136,10 @@ func (c *Cache) Take(key string, fetch func() (interface{}, error)) (interface{}
 	if fresh {
 		c.stats.IncrementMiss()
 		return val, nil
-	} else {
-		// got the result from previous ongoing query
-		c.stats.IncrementHit()
 	}
 
+	// got the result from previous ongoing query
+	c.stats.IncrementHit()
 	return val, nil
 }
 

core/collection/rollingwindow.go

@@ -73,9 +73,9 @@ func (rw *RollingWindow) span() int {
 	offset := int(timex.Since(rw.lastTime) / rw.interval)
 	if 0 <= offset && offset < rw.size {
 		return offset
-	} else {
-		return rw.size
 	}
+
+	return rw.size
 }
 
 func (rw *RollingWindow) updateOffset() {

core/collection/safemap.go

@@ -59,10 +59,10 @@ func (m *SafeMap) Get(key interface{}) (interface{}, bool) {
 
 	if val, ok := m.dirtyOld[key]; ok {
 		return val, true
-	} else {
-		val, ok := m.dirtyNew[key]
-		return val, ok
 	}
+
+	val, ok := m.dirtyNew[key]
+	return val, ok
 }
 
 func (m *SafeMap) Set(key, value interface{}) {

core/conf/config.go

@@ -34,9 +34,9 @@ func LoadConfig(file string, v interface{}, opts ...Option) error {
 
 	if opt.env {
 		return loader([]byte(os.ExpandEnv(string(content))), v)
-	} else {
-		return loader(content, v)
 	}
+
+	return loader(content, v)
 }
 
 func LoadConfigFromJsonBytes(content []byte, v interface{}) error {

core/conf/properties.go

@@ -31,7 +31,7 @@ type mapBasedProperties struct {
 	lock       sync.RWMutex
 }
 
-// Loads the properties into a properties configuration instance.
+// LoadProperties loads the properties into a properties configuration instance.
 // Returns an error that indicates if there was a problem loading the configuration.
 func LoadProperties(filename string, opts ...Option) (Properties, error) {
 	lines, err := iox.ReadTextLines(filename, iox.WithoutBlank(), iox.OmitWithPrefix("#"))
@@ -97,7 +97,7 @@ func (config *mapBasedProperties) SetInt(key string, value int) {
 	config.lock.Unlock()
 }
 
-// Dumps the configuration internal map into a string.
+// ToString dumps the configuration internal map into a string.
 func (config *mapBasedProperties) ToString() string {
 	config.lock.RLock()
 	ret := fmt.Sprintf("%s", config.properties)
@@ -106,12 +106,12 @@ func (config *mapBasedProperties) ToString() string {
 	return ret
 }
 
-// Returns the error message.
+// Error returns the error message.
 func (configError *PropertyError) Error() string {
 	return configError.message
 }
 
-// Builds a new properties configuration structure
+// NewProperties builds a new properties configuration structure.
 func NewProperties() Properties {
 	return &mapBasedProperties{
 		properties: make(map[string]string),

core/discov/subscriber.go

@@ -100,9 +100,9 @@ func (c *container) addKv(key, value string) ([]string, bool) {
 
 	if early {
 		return previous, true
-	} else {
-		return nil, false
 	}
+
+	return nil, false
 }
 
 func (c *container) addListener(listener func()) {

core/executors/periodicalexecutor.go

@@ -16,7 +16,7 @@ import (
 const idleRound = 10
 
 type (
-	// A type that satisfies executors.TaskContainer can be used as the underlying
+	// TaskContainer interface defines a type that can be used as the underlying
 	// container that used to do periodical executions.
 	TaskContainer interface {
 		// AddTask adds the task into the container.

core/fx/fn.go

@@ -300,9 +300,9 @@ func (p Stream) Walk(fn WalkFunc, opts ...Option) Stream {
 	option := buildOptions(opts...)
 	if option.unlimitedWorkers {
 		return p.walkUnlimited(fn, option)
-	} else {
-		return p.walkLimited(fn, option)
 	}
+
+	return p.walkLimited(fn, option)
 }
 
 func (p Stream) walkLimited(fn WalkFunc, option *rxOptions) Stream {

core/jsontype/time.go

@@ -19,10 +19,10 @@ func (mt *MilliTime) UnmarshalJSON(data []byte) error {
 	var milli int64
 	if err := json.Unmarshal(data, &milli); err != nil {
 		return err
-	} else {
-		mt.Time = time.Unix(0, milli*int64(time.Millisecond))
-		return nil
 	}
+
+	mt.Time = time.Unix(0, milli*int64(time.Millisecond))
+	return nil
 }
 
 func (mt MilliTime) GetBSON() (interface{}, error) {

core/limit/periodlimit.go

@@ -97,9 +97,9 @@ func (h *PeriodLimit) calcExpireSeconds() int {
 	if h.align {
 		unix := time.Now().Unix() + zoneDiff
 		return h.period - int(unix%int64(h.period))
-	} else {
-		return h.period
 	}
+
+	return h.period
 }
 
 func Align() LimitOption {

core/logx/rotatelogger.go

@@ -163,9 +163,9 @@ func (l *RotateLogger) Write(data []byte) (int, error) {
 func (l *RotateLogger) getBackupFilename() string {
 	if len(l.backup) == 0 {
 		return l.rule.BackupFileName()
-	} else {
-		return l.backup
 	}
+
+	return l.backup
 }
 
 func (l *RotateLogger) init() error {

core/mapping/fieldoptions.go

@@ -35,9 +35,9 @@ func (o *fieldOptionsWithContext) fromString() bool {
 func (o *fieldOptionsWithContext) getDefault() (string, bool) {
 	if o == nil {
 		return "", false
-	} else {
-		return o.Default, len(o.Default) > 0
 	}
+
+	return o.Default, len(o.Default) > 0
 }
 
 func (o *fieldOptionsWithContext) optional() bool {
@@ -55,9 +55,9 @@ func (o *fieldOptionsWithContext) options() []string {
 func (o *fieldOptions) optionalDep() string {
 	if o == nil {
 		return ""
-	} else {
-		return o.OptionalDep
 	}
+
+	return o.OptionalDep
 }
 
 func (o *fieldOptions) toOptionsWithContext(key string, m Valuer, fullName string) (
@@ -77,29 +77,29 @@ func (o *fieldOptions) toOptionsWithContext(key string, m Valuer, fullName strin
 			_, selfOn := m.Value(key)
 			if baseOn == selfOn {
 				return nil, fmt.Errorf("set value for either %q or %q in %q", dep, key, fullName)
-			} else {
-				optional = baseOn
 			}
+
+			optional = baseOn
 		} else {
 			_, baseOn := m.Value(dep)
 			_, selfOn := m.Value(key)
 			if baseOn != selfOn {
 				return nil, fmt.Errorf("values for %q and %q should be both provided or both not in %q",
 					dep, key, fullName)
-			} else {
-				optional = !baseOn
 			}
+
+			optional = !baseOn
 		}
 	}
 
 	if o.fieldOptionsWithContext.Optional == optional {
 		return &o.fieldOptionsWithContext, nil
-	} else {
-		return &fieldOptionsWithContext{
-			FromString: o.FromString,
-			Optional:   optional,
-			Options:    o.Options,
-			Default:    o.Default,
-		}, nil
 	}
+
+	return &fieldOptionsWithContext{
+		FromString: o.FromString,
+		Optional:   optional,
+		Options:    o.Options,
+		Default:    o.Default,
+	}, nil
 }

core/mapping/unmarshaler.go

@@ -114,9 +114,9 @@ func (u *Unmarshaler) processAnonymousField(field reflect.StructField, value ref
 
 	if options.optional() {
 		return u.processAnonymousFieldOptional(field, value, key, m, fullName)
-	} else {
-		return u.processAnonymousFieldRequired(field, value, m, fullName)
 	}
+
+	return u.processAnonymousFieldRequired(field, value, m, fullName)
 }
 
 func (u *Unmarshaler) processAnonymousFieldOptional(field reflect.StructField, value reflect.Value,
@@ -184,9 +184,9 @@ func (u *Unmarshaler) processField(field reflect.StructField, value reflect.Valu
 
 	if field.Anonymous {
 		return u.processAnonymousField(field, value, m, fullName)
-	} else {
-		return u.processNamedField(field, value, m, fullName)
 	}
+
+	return u.processNamedField(field, value, m, fullName)
 }
 
 func (u *Unmarshaler) processFieldNotFromString(field reflect.StructField, value reflect.Value,
@@ -319,9 +319,9 @@ func (u *Unmarshaler) processNamedField(field reflect.StructField, value reflect
 	mapValue, hasValue := getValue(m, key)
 	if hasValue {
 		return u.processNamedFieldWithValue(field, value, mapValue, key, opts, fullName)
-	} else {
-		return u.processNamedFieldWithoutValue(field, value, opts, fullName)
 	}
+
+	return u.processNamedFieldWithoutValue(field, value, opts, fullName)
 }
 
 func (u *Unmarshaler) processNamedFieldWithValue(field reflect.StructField, value reflect.Value,
@@ -329,9 +329,9 @@ func (u *Unmarshaler) processNamedFieldWithValue(field reflect.StructField, valu
 	if mapValue == nil {
 		if opts.optional() {
 			return nil
-		} else {
-			return fmt.Errorf("field %s mustn't be nil", key)
 		}
+
+		return fmt.Errorf("field %s mustn't be nil", key)
 	}
 
 	maybeNewValue(field, value)

core/mapping/utils.go

@@ -124,23 +124,26 @@ func convertType(kind reflect.Kind, str string) (interface{}, error) {
 	case reflect.Bool:
 		return str == "1" || strings.ToLower(str) == "true", nil
 	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-		if intValue, err := strconv.ParseInt(str, 10, 64); err != nil {
+		intValue, err := strconv.ParseInt(str, 10, 64)
+		if err != nil {
 			return 0, fmt.Errorf("the value %q cannot parsed as int", str)
-		} else {
-			return intValue, nil
 		}
+
+		return intValue, nil
 	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
-		if uintValue, err := strconv.ParseUint(str, 10, 64); err != nil {
+		uintValue, err := strconv.ParseUint(str, 10, 64)
+		if err != nil {
 			return 0, fmt.Errorf("the value %q cannot parsed as uint", str)
-		} else {
-			return uintValue, nil
 		}
+
+		return uintValue, nil
 	case reflect.Float32, reflect.Float64:
-		if floatValue, err := strconv.ParseFloat(str, 64); err != nil {
+		floatValue, err := strconv.ParseFloat(str, 64)
+		if err != nil {
 			return 0, fmt.Errorf("the value %q cannot parsed as float", str)
-		} else {
-			return floatValue, nil
 		}
+
+		return floatValue, nil
 	case reflect.String:
 		return str, nil
 	default:
@@ -180,26 +183,28 @@ func doParseKeyAndOptions(field reflect.StructField, value string) (string, *fie
 			segs := strings.Split(option, equalToken)
 			if len(segs) != 2 {
 				return "", nil, fmt.Errorf("field %s has wrong options", field.Name)
-			} else {
-				fieldOpts.Options = strings.Split(segs[1], optionSeparator)
 			}
+
+			fieldOpts.Options = strings.Split(segs[1], optionSeparator)
 		case strings.HasPrefix(option, defaultOption):
 			segs := strings.Split(option, equalToken)
 			if len(segs) != 2 {
 				return "", nil, fmt.Errorf("field %s has wrong default option", field.Name)
-			} else {
-				fieldOpts.Default = strings.TrimSpace(segs[1])
 			}
+
+			fieldOpts.Default = strings.TrimSpace(segs[1])
 		case strings.HasPrefix(option, rangeOption):
 			segs := strings.Split(option, equalToken)
 			if len(segs) != 2 {
 				return "", nil, fmt.Errorf("field %s has wrong range", field.Name)
 			}
-			if nr, err := parseNumberRange(segs[1]); err != nil {
+
+			nr, err := parseNumberRange(segs[1])
+			if err != nil {
 				return "", nil, err
-			} else {
-				fieldOpts.Range = nr
 			}
+
+			fieldOpts.Range = nr
 		}
 	}
 

core/mapping/yamlunmarshaler.go

@@ -34,9 +34,9 @@ func unmarshalYamlBytes(content []byte, v interface{}, unmarshaler *Unmarshaler)
 
 	if m, ok := o.(map[string]interface{}); ok {
 		return unmarshaler.Unmarshal(m, v)
-	} else {
-		return ErrUnsupportedType
 	}
+
+	return ErrUnsupportedType
 }
 
 func unmarshalYamlReader(reader io.Reader, v interface{}, unmarshaler *Unmarshaler) error {

core/mathx/int.go

@@ -3,15 +3,15 @@ package mathx
 func MaxInt(a, b int) int {
 	if a > b {
 		return a
-	} else {
-		return b
 	}
+
+	return b
 }
 
 func MinInt(a, b int) int {
 	if a < b {
 		return a
-	} else {
-		return b
 	}
+
+	return b
 }

core/proc/profile.go

@@ -161,7 +161,7 @@ func (p *Profile) Stop() {
 	atomic.StoreUint32(&started, 0)
 }
 
-// Start starts a new profiling session.
+// StartProfile starts a new profiling session.
 // The caller should call the Stop method on the value returned
 // to cleanly stop profiling.
 func StartProfile() Stopper {

core/prof/profilecenter.go

@@ -83,9 +83,9 @@ func generateReport() string {
 	calcFn := func(total, count int64) string {
 		if count == 0 {
 			return "-"
-		} else {
-			return (time.Duration(total) / time.Duration(count)).String()
 		}
+
+		return (time.Duration(total) / time.Duration(count)).String()
 	}
 
 	func() {

core/queue/queue_test.go

@@ -78,10 +78,10 @@ func (p *mockedProducer) Produce() (string, bool) {
 	if atomic.AddInt32(&p.count, 1) <= p.total {
 		p.wait.Done()
 		return "item", true
-	} else {
-		time.Sleep(time.Second)
-		return "", false
 	}
+
+	time.Sleep(time.Second)
+	return "", false
 }
 
 type mockedListener struct {

core/search/tree.go

@@ -114,9 +114,9 @@ func (t *Tree) next(n *node, route string, result *Result) bool {
 func (nd *node) getChildren(route string) map[string]*node {
 	if len(route) > 0 && route[0] == colon {
 		return nd.children[1]
-	} else {
-		return nd.children[0]
 	}
+
+	return nd.children[0]
 }
 
 func add(nd *node, route string, item interface{}) error {
@@ -140,9 +140,9 @@ func add(nd *node, route string, item interface{}) error {
 			if child, ok := children[token]; ok {
 				if child != nil {
 					return add(child, route[i+1:], item)
-				} else {
-					return ErrInvalidState
 				}
+
+				return ErrInvalidState
 			} else {
 				child := newNode(nil)
 				children[token] = child

core/service/servicegroup.go

@@ -38,6 +38,7 @@ func (sg *ServiceGroup) Add(service Service) {
 	sg.services = append(sg.services, service)
 }
 
+// Start starts the ServiceGroup.
 // There should not be any logic code after calling this method, because this method is a blocking one.
 // Also, quitting this method will close the logx output.
 func (sg *ServiceGroup) Start() {

core/stat/internal/cgroup_linux.go

@@ -110,16 +110,16 @@ func parseUint(s string) (uint64, error) {
 	if err != nil {
 		if err.(*strconv.NumError).Err == strconv.ErrRange {
 			return 0, nil
-		} else {
-			return 0, fmt.Errorf("cgroup: bad int format: %s", s)
-		}
-	} else {
-		if v < 0 {
-			return 0, nil
-		} else {
-			return uint64(v), nil
 		}
+
+		return 0, fmt.Errorf("cgroup: bad int format: %s", s)
 	}
+
+	if v < 0 {
+		return 0, nil
+	}
+
+	return uint64(v), nil
 }
 
 func parseUints(val string) ([]uint64, error) {

core/stat/metrics.go

@@ -185,9 +185,9 @@ func getTopDuration(tasks []Task) float32 {
 	top := topK(tasks, 1)
 	if len(top) < 1 {
 		return 0
-	} else {
-		return float32(top[0].Duration) / float32(time.Millisecond)
 	}
+
+	return float32(top[0].Duration) / float32(time.Millisecond)
 }
 
 func log(report *StatReport) {

core/stores/cache/cachenode.go

@@ -75,11 +75,12 @@ func (c cacheNode) DelCache(keys ...string) error {
 
 // GetCache gets the cache with key and fills into v.
 func (c cacheNode) GetCache(key string, v interface{}) error {
-	if err := c.doGetCache(key, v); err == errPlaceholder {
+	err := c.doGetCache(key, v)
+	if err == errPlaceholder {
 		return c.errNotFound
-	} else {
-		return err
 	}
+
+	return err
 }
 
 // IsNotFound checks if the given error is the defined errNotFound.

core/stores/clickhouse/clickhouse.go

@@ -1,6 +1,7 @@
 package clickhouse
 
 import (
+	// imports the driver.
 	_ "github.com/ClickHouse/clickhouse-go"
 	"github.com/tal-tech/go-zero/core/stores/sqlx"
 )

core/stores/kv/store.go

@@ -655,9 +655,10 @@ func (cs clusterStore) Zscore(key string, value string) (int64, error) {
 }
 
 func (cs clusterStore) getRedis(key string) (*redis.Redis, error) {
-	if val, ok := cs.dispatcher.Get(key); !ok {
+	val, ok := cs.dispatcher.Get(key)
+	if !ok {
 		return nil, ErrNoRedisNode
-	} else {
-		return val.(*redis.Redis), nil
 	}
+
+	return val.(*redis.Redis), nil
 }

core/stores/mongo/sessionmanager.go

@@ -66,7 +66,7 @@ func (cs *concurrentSession) takeSession(opts ...Option) (*mgo.Session, error) {
 
 	if err := cs.limit.Borrow(o.timeout); err != nil {
 		return nil, err
-	} else {
-		return cs.Copy(), nil
 	}
+
+	return cs.Copy(), nil
 }

core/stores/postgres/postgresql.go

@@ -1,6 +1,7 @@
 package postgres
 
 import (
+	// imports the driver.
 	_ "github.com/lib/pq"
 	"github.com/tal-tech/go-zero/core/stores/sqlx"
 )

core/stores/redis/redis.go

@@ -72,7 +72,7 @@ func NewRedis(redisAddr, redisType string, redisPass ...string) *Redis {
 	}
 }
 
-// Use passed in redis connection to execute blocking queries
+// Blpop uses passed in redis connection to execute blocking queries.
 // Doesn't benefit from pooling redis connections of blocking queries
 func (s *Redis) Blpop(redisNode RedisNode, key string) (string, error) {
 	if redisNode == nil {
@@ -1093,15 +1093,16 @@ func (s *Redis) Zadd(key string, score int64, value string) (val bool, err error
 			return err
 		}
 
-		if v, err := conn.ZAdd(key, red.Z{
+		v, err := conn.ZAdd(key, red.Z{
 			Score:  float64(score),
 			Member: value,
-		}).Result(); err != nil {
+		}).Result()
+		if err != nil {
 			return err
-		} else {
-			val = v == 1
-			return nil
 		}
+
+		val = v == 1
+		return nil
 	}, acceptable)
 
 	return
@@ -1339,15 +1340,16 @@ func (s *Redis) ZrangebyscoreWithScores(key string, start, stop int64) (val []Pa
 			return err
 		}
 
-		if v, err := conn.ZRangeByScoreWithScores(key, red.ZRangeBy{
+		v, err := conn.ZRangeByScoreWithScores(key, red.ZRangeBy{
 			Min: strconv.FormatInt(start, 10),
 			Max: strconv.FormatInt(stop, 10),
-		}).Result(); err != nil {
+		}).Result()
+		if err != nil {
 			return err
-		} else {
-			val = toPairs(v)
-			return nil
 		}
+
+		val = toPairs(v)
+		return nil
 	}, acceptable)
 
 	return
@@ -1365,17 +1367,18 @@ func (s *Redis) ZrangebyscoreWithScoresAndLimit(key string, start, stop int64, p
 			return err
 		}
 
-		if v, err := conn.ZRangeByScoreWithScores(key, red.ZRangeBy{
+		v, err := conn.ZRangeByScoreWithScores(key, red.ZRangeBy{
 			Min:    strconv.FormatInt(start, 10),
 			Max:    strconv.FormatInt(stop, 10),
 			Offset: int64(page * size),
 			Count:  int64(size),
-		}).Result(); err != nil {
+		}).Result()
+		if err != nil {
 			return err
-		} else {
-			val = toPairs(v)
-			return nil
 		}
+
+		val = toPairs(v)
+		return nil
 	}, acceptable)
 
 	return
@@ -1402,15 +1405,16 @@ func (s *Redis) ZrevrangebyscoreWithScores(key string, start, stop int64) (val [
 			return err
 		}
 
-		if v, err := conn.ZRevRangeByScoreWithScores(key, red.ZRangeBy{
+		v, err := conn.ZRevRangeByScoreWithScores(key, red.ZRangeBy{
 			Min: strconv.FormatInt(start, 10),
 			Max: strconv.FormatInt(stop, 10),
-		}).Result(); err != nil {
+		}).Result()
+		if err != nil {
 			return err
-		} else {
-			val = toPairs(v)
-			return nil
 		}
+
+		val = toPairs(v)
+		return nil
 	}, acceptable)
 
 	return
@@ -1428,17 +1432,18 @@ func (s *Redis) ZrevrangebyscoreWithScoresAndLimit(key string, start, stop int64
 			return err
 		}
 
-		if v, err := conn.ZRevRangeByScoreWithScores(key, red.ZRangeBy{
+		v, err := conn.ZRevRangeByScoreWithScores(key, red.ZRangeBy{
 			Min:    strconv.FormatInt(start, 10),
 			Max:    strconv.FormatInt(stop, 10),
 			Offset: int64(page * size),
 			Count:  int64(size),
-		}).Result(); err != nil {
+		}).Result()
+		if err != nil {
 			return err
-		} else {
-			val = toPairs(v)
-			return nil
 		}
+
+		val = toPairs(v)
+		return nil
 	}, acceptable)
 
 	return

core/stores/redis/redislock.go

@@ -63,10 +63,10 @@ func (rl *RedisLock) Acquire() (bool, error) {
 	reply, ok := resp.(string)
 	if ok && reply == "OK" {
 		return true, nil
-	} else {
-		logx.Errorf("Unknown reply when acquiring lock for %s: %v", rl.key, resp)
-		return false, nil
 	}
+
+	logx.Errorf("Unknown reply when acquiring lock for %s: %v", rl.key, resp)
+	return false, nil
 }
 
 func (rl *RedisLock) Release() (bool, error) {
@@ -75,11 +75,12 @@ func (rl *RedisLock) Release() (bool, error) {
 		return false, err
 	}
 
-	if reply, ok := resp.(int64); !ok {
+	reply, ok := resp.(int64)
+	if !ok {
 		return false, nil
-	} else {
-		return reply == 1, nil
 	}
+
+	return reply == 1, nil
 }
 
 func (rl *RedisLock) SetExpire(seconds int) {

core/stores/sqlx/orm.go

@@ -107,10 +107,10 @@ func parseTagName(field reflect.StructField) string {
 	key := field.Tag.Get(tagName)
 	if len(key) == 0 {
 		return ""
-	} else {
-		options := strings.Split(key, ",")
-		return options[0]
 	}
+
+	options := strings.Split(key, ",")
+	return options[0]
 }
 
 func unmarshalRow(v interface{}, scanner rowsScanner, strict bool) error {
@@ -136,19 +136,21 @@ func unmarshalRow(v interface{}, scanner rowsScanner, strict bool) error {
 		reflect.String:
 		if rve.CanSet() {
 			return scanner.Scan(v)
-		} else {
-			return ErrNotSettable
 		}
+
+		return ErrNotSettable
 	case reflect.Struct:
 		columns, err := scanner.Columns()
 		if err != nil {
 			return err
 		}
-		if values, err := mapStructFieldsIntoSlice(rve, columns, strict); err != nil {
+
+		values, err := mapStructFieldsIntoSlice(rve, columns, strict)
+		if err != nil {
 			return err
-		} else {
-			return scanner.Scan(values...)
 		}
+
+		return scanner.Scan(values...)
 	default:
 		return ErrUnsupportedValueType
 	}
@@ -178,10 +180,10 @@ func unmarshalRows(v interface{}, scanner rowsScanner, strict bool) error {
 				if rve.CanSet() {
 					if err := scanner.Scan(value); err != nil {
 						return err
-					} else {
-						appendFn(reflect.ValueOf(value))
-						return nil
 					}
+
+					appendFn(reflect.ValueOf(value))
+					return nil
 				}
 				return ErrNotSettable
 			}
@@ -207,14 +209,15 @@ func unmarshalRows(v interface{}, scanner rowsScanner, strict bool) error {
 
 				for scanner.Next() {
 					value := reflect.New(base)
-					if values, err := mapStructFieldsIntoSlice(value, columns, strict); err != nil {
+					values, err := mapStructFieldsIntoSlice(value, columns, strict)
+					if err != nil {
+						return err
+					}
+
+					if err := scanner.Scan(values...); err != nil {
 						return err
 					} else {
-						if err := scanner.Scan(values...); err != nil {
-							return err
-						} else {
-							appendFn(value)
-						}
+						appendFn(value)
 					}
 				}
 			default:

core/stores/sqlx/sqlconn.go

@@ -101,14 +101,15 @@ func (db *commonSqlConn) Prepare(query string) (stmt StmtSession, err error) {
 			return err
 		}
 
-		if st, err := conn.Prepare(query); err != nil {
+		st, err := conn.Prepare(query)
+		if err != nil {
 			return err
-		} else {
-			stmt = statement{
-				stmt: st,
-			}
-			return nil
 		}
+
+		stmt = statement{
+			stmt: st,
+		}
+		return nil
 	}, db.acceptable)
 
 	return
@@ -148,9 +149,9 @@ func (db *commonSqlConn) acceptable(err error) bool {
 	ok := err == nil || err == sql.ErrNoRows || err == sql.ErrTxDone
 	if db.accept == nil {
 		return ok
-	} else {
-		return ok || db.accept(err)
 	}
+
+	return ok || db.accept(err)
 }
 
 func (db *commonSqlConn) queryRows(scanner func(*sql.Rows) error, q string, args ...interface{}) error {

core/stores/sqlx/tx.go

@@ -24,13 +24,14 @@ func (t txSession) Exec(q string, args ...interface{}) (sql.Result, error) {
 }
 
 func (t txSession) Prepare(q string) (StmtSession, error) {
-	if stmt, err := t.Tx.Prepare(q); err != nil {
+	stmt, err := t.Tx.Prepare(q)
+	if err != nil {
 		return nil, err
-	} else {
-		return statement{
-			stmt: stmt,
-		}, nil
 	}
+
+	return statement{
+		stmt: stmt,
+	}, nil
 }
 
 func (t txSession) QueryRow(v interface{}, q string, args ...interface{}) error {
@@ -58,13 +59,14 @@ func (t txSession) QueryRowsPartial(v interface{}, q string, args ...interface{}
 }
 
 func begin(db *sql.DB) (trans, error) {
-	if tx, err := db.Begin(); err != nil {
+	tx, err := db.Begin()
+	if err != nil {
 		return nil, err
-	} else {
-		return txSession{
-			Tx: tx,
-		}, nil
 	}
+
+	return txSession{
+		Tx: tx,
+	}, nil
 }
 
 func transact(db *commonSqlConn, b beginnable, fn func(Session) error) (err error) {
@@ -83,6 +85,7 @@ func transactOnConn(conn *sql.DB, b beginnable, fn func(Session) error) (err err
 	if err != nil {
 		return
 	}
+
 	defer func() {
 		if p := recover(); p != nil {
 			if e := tx.Rollback(); e != nil {

core/stringx/strings.go

@@ -96,9 +96,9 @@ func Substr(str string, start int, stop int) (string, error) {
 func TakeOne(valid, or string) string {
 	if len(valid) > 0 {
 		return valid
-	} else {
-		return or
 	}
+
+	return or
 }
 
 func TakeWithPriority(fns ...func() string) string {

core/syncx/immutableresource.go

@@ -69,7 +69,8 @@ func (ir *ImmutableResource) maybeRefresh(execute func()) {
 	}
 }
 
-// Set interval to 0 to enforce refresh every time if not succeeded. default is time.Second.
+// WithRefreshIntervalOnFailure sets refresh interval on failure.
+// Set interval to 0 to enforce refresh every time if not succeeded, default is time.Second.
 func WithRefreshIntervalOnFailure(interval time.Duration) ImmutableResourceOption {
 	return func(resource *ImmutableResource) {
 		resource.refreshInterval = interval

core/threading/routinegroup.go

@@ -10,6 +10,7 @@ func NewRoutineGroup() *RoutineGroup {
 	return new(RoutineGroup)
 }
 
+// Run runs the given fn in RoutineGroup.
 // Don't reference the variables from outside,
 // because outside variables can be changed by other goroutines
 func (g *RoutineGroup) Run(fn func()) {
@@ -21,6 +22,7 @@ func (g *RoutineGroup) Run(fn func()) {
 	}()
 }
 
+// RunSafe runs the given fn in RoutineGroup, and avoid panics.
 // Don't reference the variables from outside,
 // because outside variables can be changed by other goroutines
 func (g *RoutineGroup) RunSafe(fn func()) {
@@ -32,6 +34,7 @@ func (g *RoutineGroup) RunSafe(fn func()) {
 	})
 }
 
+// Wait waits all running functions to be done.
 func (g *RoutineGroup) Wait() {
 	g.waitGroup.Wait()
 }

core/trace/tracespec/keys.go

@@ -6,7 +6,7 @@ var TracingKey = contextKey("X-Trace")
 // contextKey a type for context key
 type contextKey string
 
-// Printing a context will reveal a fair amount of information about it.
+// String returns a context will reveal a fair amount of information about it.
 func (c contextKey) String() string {
 	return "trace/tracespec context key " + string(c)
 }

rest/handler/contentsecurityhandler_test.go

@@ -315,12 +315,13 @@ func buildRequest(rs requestSettings) (*http.Request, error) {
 		var path string
 		var query string
 		if len(rs.requestUri) > 0 {
-			if u, err := url.Parse(rs.requestUri); err != nil {
+			u, err := url.Parse(rs.requestUri)
+			if err != nil {
 				return nil, err
-			} else {
-				path = u.Path
-				query = u.RawQuery
 			}
+
+			path = u.Path
+			query = u.RawQuery
 		} else {
 			path = r.URL.Path
 			query = r.URL.RawQuery
@@ -377,10 +378,9 @@ func createTempFile(body []byte) (string, error) {
 	tmpFile, err := ioutil.TempFile(os.TempDir(), "go-unit-*.tmp")
 	if err != nil {
 		return "", err
-	} else {
-		tmpFile.Close()
 	}
 
+	tmpFile.Close()
 	err = ioutil.WriteFile(tmpFile.Name(), body, os.ModePerm)
 	if err != nil {
 		return "", err

rest/handler/loghandler.go

@@ -114,9 +114,9 @@ func dumpRequest(r *http.Request) string {
 	reqContent, err := httputil.DumpRequest(r, true)
 	if err != nil {
 		return err.Error()
-	} else {
-		return string(reqContent)
 	}
+
+	return string(reqContent)
 }
 
 func logBrief(r *http.Request, code int, timer *utils.ElapsedTimer, logs *internal.LogCollector) {

rest/handler/sheddinghandler_test.go

@@ -89,9 +89,9 @@ type mockShedder struct {
 func (s mockShedder) Allow() (load.Promise, error) {
 	if s.allow {
 		return mockPromise{}, nil
-	} else {
-		return nil, load.ErrServiceOverloaded
 	}
+
+	return nil, load.ErrServiceOverloaded
 }
 
 type mockPromise struct {

rest/httpx/requests.go

@@ -24,6 +24,7 @@ var (
 	pathUnmarshaler = mapping.NewUnmarshaler(pathKey, mapping.WithStringValues())
 )
 
+// Parse parses the request.
 func Parse(r *http.Request, v interface{}) error {
 	if err := ParsePath(r, v); err != nil {
 		return err
@@ -36,7 +37,7 @@ func Parse(r *http.Request, v interface{}) error {
 	return ParseJsonBody(r, v)
 }
 
-// Parses the form request.
+// ParseForm parses the form request.
 func ParseForm(r *http.Request, v interface{}) error {
 	if err := r.ParseForm(); err != nil {
 		return err
@@ -80,7 +81,7 @@ func ParseHeader(headerValue string) map[string]string {
 	return ret
 }
 
-// Parses the post request which contains json in body.
+// ParseJsonBody parses the post request which contains json in body.
 func ParseJsonBody(r *http.Request, v interface{}) error {
 	var reader io.Reader
 	if withJsonBody(r) {
@@ -92,7 +93,7 @@ func ParseJsonBody(r *http.Request, v interface{}) error {
 	return mapping.UnmarshalJsonReader(reader, v)
 }
 
-// Parses the symbols reside in url path.
+// ParsePath parses the symbols reside in url path.
 // Like http://localhost/bag/:name
 func ParsePath(r *http.Request, v interface{}) error {
 	vars := context.Vars(r)

rest/httpx/util.go

@@ -4,7 +4,7 @@ import "net/http"
 
 const xForwardFor = "X-Forward-For"
 
-// Returns the peer address, supports X-Forward-For
+// GetRemoteAddr returns the peer address, supports X-Forward-For.
 func GetRemoteAddr(r *http.Request) string {
 	v := r.Header.Get(xForwardFor)
 	if len(v) > 0 {

rest/router/patrouter.go

@@ -43,13 +43,14 @@ func (pr *patRouter) Handle(method, reqPath string, handler http.Handler) error
 	}
 
 	cleanPath := path.Clean(reqPath)
-	if tree, ok := pr.trees[method]; ok {
-		return tree.Add(cleanPath, handler)
-	} else {
-		tree = search.NewTree()
-		pr.trees[method] = tree
+	tree, ok := pr.trees[method]
+	if ok {
 		return tree.Add(cleanPath, handler)
 	}
+
+	tree = search.NewTree()
+	pr.trees[method] = tree
+	return tree.Add(cleanPath, handler)
 }
 
 func (pr *patRouter) ServeHTTP(w http.ResponseWriter, r *http.Request) {
@@ -110,9 +111,9 @@ func (pr *patRouter) methodsAllowed(method, path string) (string, bool) {
 
 	if len(allows) > 0 {
 		return strings.Join(allows, allowMethodSeparator), true
-	} else {
-		return "", false
 	}
+
+	return "", false
 }
 
 func validMethod(method string) bool {

rest/token/tokenparser.go

@@ -58,9 +58,9 @@ func (tp *TokenParser) ParseToken(r *http.Request, secret, prevSecret string) (*
 			token, err = tp.doParseToken(r, second)
 			if err != nil {
 				return nil, err
-			} else {
-				tp.incrementCount(second)
 			}
+
+			tp.incrementCount(second)
 		} else {
 			tp.incrementCount(first)
 		}

tools/goctl/api/docgen/gen.go

@@ -21,7 +21,7 @@ func DocCommand(c *cli.Context) error {
 
 	files, err := filePathWalkDir(dir)
 	if err != nil {
-		return errors.New(fmt.Sprintf("dir %s not exist", dir))
+		return fmt.Errorf("dir %s not exist", dir)
 	}
 
 	err = os.RemoveAll(dir + "/" + docDir + "/")
@@ -31,7 +31,7 @@ func DocCommand(c *cli.Context) error {
 	for _, f := range files {
 		api, err := parser.Parse(f)
 		if err != nil {
-			return errors.New(fmt.Sprintf("parse file: %s, err: %s", f, err.Error()))
+			return fmt.Errorf("parse file: %s, err: %s", f, err.Error())
 		}
 
 		index := strings.Index(f, dir)

tools/goctl/api/gogen/gentypes.go

@@ -1,7 +1,6 @@
 package gogen
 
 import (
-	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -76,7 +75,7 @@ func genTypes(dir string, cfg *config.Config, api *spec.ApiSpec) error {
 func writeType(writer io.Writer, tp spec.Type) error {
 	structType, ok := tp.(spec.DefineStruct)
 	if !ok {
-		return errors.New(fmt.Sprintf("unspport struct type: %s", tp.Name()))
+		return fmt.Errorf("unspport struct type: %s", tp.Name())
 	}
 
 	fmt.Fprintf(writer, "type %s struct {\n", util.Title(tp.Name()))
@@ -84,9 +83,9 @@ func writeType(writer io.Writer, tp spec.Type) error {
 		if member.IsInline {
 			if _, err := fmt.Fprintf(writer, "%s\n", strings.Title(member.Type.Name())); err != nil {
 				return err
-			} else {
-				continue
 			}
+
+			continue
 		}
 
 		if err := writeProperty(writer, member.Name, member.Tag, member.GetComment(), member.Type, 1); err != nil {

tools/goctl/api/javagen/gencomponents.go

@@ -216,7 +216,7 @@ func (c *componentsContext) writeMembers(writer io.Writer, tp spec.Type, indent
 		if ok {
 			return c.writeMembers(writer, pointType.Type, indent)
 		}
-		return errors.New(fmt.Sprintf("type %s not supported", tp.Name()))
+		return fmt.Errorf("type %s not supported", tp.Name())
 	}
 
 	for _, member := range definedType.Members {

tools/goctl/api/parser/g4/ast/ast.go

@@ -203,41 +203,40 @@ func (e *defaultExpr) IsNotNil() bool {
 
 func EqualDoc(spec1, spec2 Spec) bool {
 	if spec1 == nil {
-		if spec2 != nil {
+		return spec2 == nil
+	}
+
+	if spec2 == nil {
+		return false
+	}
+
+	var expectDoc, actualDoc []Expr
+	expectDoc = append(expectDoc, spec2.Doc()...)
+	actualDoc = append(actualDoc, spec1.Doc()...)
+	sort.Slice(expectDoc, func(i, j int) bool {
+		return expectDoc[i].Line() < expectDoc[j].Line()
+	})
+
+	for index, each := range actualDoc {
+		if !each.Equal(actualDoc[index]) {
 			return false
 		}
-		return true
-	} else {
-		if spec2 == nil {
-			return false
-		}
-
-		var expectDoc, actualDoc []Expr
-		expectDoc = append(expectDoc, spec2.Doc()...)
-		actualDoc = append(actualDoc, spec1.Doc()...)
-		sort.Slice(expectDoc, func(i, j int) bool {
-			return expectDoc[i].Line() < expectDoc[j].Line()
-		})
-
-		for index, each := range actualDoc {
-			if !each.Equal(actualDoc[index]) {
-				return false
-			}
-		}
-
-		if spec1.Comment() != nil {
-			if spec2.Comment() == nil {
-				return false
-			}
-			if !spec1.Comment().Equal(spec2.Comment()) {
-				return false
-			}
-		} else {
-			if spec2.Comment() != nil {
-				return false
-			}
-		}
 	}
+
+	if spec1.Comment() != nil {
+		if spec2.Comment() == nil {
+			return false
+		}
+
+		if !spec1.Comment().Equal(spec2.Comment()) {
+			return false
+		}
+	} else {
+		if spec2.Comment() != nil {
+			return false
+		}
+	}
+
 	return true
 }
 
@@ -295,8 +294,10 @@ func (v *ApiVisitor) getHiddenTokensToLeft(t TokenStream, channel int, containsC
 				}
 			}
 		}
+
 		list = append(list, v.newExprWithToken(each))
 	}
+
 	return list
 }
 
@@ -307,6 +308,7 @@ func (v *ApiVisitor) getHiddenTokensToRight(t TokenStream, channel int) []Expr {
 	for _, each := range tokens {
 		list = append(list, v.newExprWithToken(each))
 	}
+
 	return list
 }
 
@@ -314,6 +316,7 @@ func (v *ApiVisitor) exportCheck(expr Expr) {
 	if expr == nil || !expr.IsNotNil() {
 		return
 	}
+
 	if api.IsBasicType(expr.Text()) {
 		return
 	}

tools/goctl/api/parser/g4/ast/service.go

@@ -508,9 +508,9 @@ func (s *ServiceRoute) Format() error {
 func (s *ServiceRoute) GetHandler() Expr {
 	if s.AtHandler != nil {
 		return s.AtHandler.Name
-	} else {
-		return s.AtServer.Kv.Get("handler")
 	}
+
+	return s.AtServer.Kv.Get("handler")
 }
 
 func (a *ServiceApi) Format() error {

tools/goctl/api/parser/parser.go

@@ -1,7 +1,6 @@
 package parser
 
 import (
-	"errors"
 	"fmt"
 	"path/filepath"
 	"unicode"
@@ -101,7 +100,7 @@ func (p parser) fillTypes() error {
 				Docs:    p.stringExprs(v.Doc()),
 			})
 		default:
-			return errors.New(fmt.Sprintf("unknown type %+v", v))
+			return fmt.Errorf("unknown type %+v", v)
 		}
 	}
 
@@ -116,16 +115,16 @@ func (p parser) fillTypes() error {
 					tp, err := p.findDefinedType(v.RawName)
 					if err != nil {
 						return err
-					} else {
-						member.Type = *tp
 					}
+
+					member.Type = *tp
 				}
 				members = append(members, member)
 			}
 			v.Members = members
 			types = append(types, v)
 		default:
-			return errors.New(fmt.Sprintf("unknown type %+v", v))
+			return fmt.Errorf("unknown type %+v", v)
 		}
 	}
 	p.spec.Types = types
@@ -141,7 +140,8 @@ func (p parser) findDefinedType(name string) (*spec.Type, error) {
 			}
 		}
 	}
-	return nil, errors.New(fmt.Sprintf("type %s not defined", name))
+
+	return nil, fmt.Errorf("type %s not defined", name)
 }
 
 func (p parser) fieldToMember(field *ast.TypeField) spec.Member {
@@ -172,9 +172,9 @@ func (p parser) astTypeToSpec(in ast.DataType) spec.Type {
 		raw := v.Literal.Text()
 		if api.IsBasicType(raw) {
 			return spec.PrimitiveType{RawName: raw}
-		} else {
-			return spec.DefineStruct{RawName: raw}
 		}
+
+		return spec.DefineStruct{RawName: raw}
 	case *ast.Interface:
 		return spec.InterfaceType{RawName: v.Literal.Text()}
 	case *ast.Map:
@@ -185,9 +185,9 @@ func (p parser) astTypeToSpec(in ast.DataType) spec.Type {
 		raw := v.Name.Text()
 		if api.IsBasicType(raw) {
 			return spec.PointerType{RawName: v.PointerExpr.Text(), Type: spec.PrimitiveType{RawName: raw}}
-		} else {
-			return spec.PointerType{RawName: v.PointerExpr.Text(), Type: spec.DefineStruct{RawName: raw}}
 		}
+
+		return spec.PointerType{RawName: v.PointerExpr.Text(), Type: spec.DefineStruct{RawName: raw}}
 	}
 
 	panic(fmt.Sprintf("unspported type %+v", in))
@@ -246,8 +246,8 @@ func (p parser) fillService() error {
 
 				for _, char := range route.Handler {
 					if !unicode.IsDigit(char) && !unicode.IsLetter(char) {
-						return errors.New(fmt.Sprintf("route [%s] handler [%s] invalid, handler name should only contains letter or digit",
-							route.Path, route.Handler))
+						return fmt.Errorf("route [%s] handler [%s] invalid, handler name should only contains letter or digit",
+							route.Path, route.Handler)
 					}
 				}
 			}
@@ -278,7 +278,7 @@ func (p parser) fillService() error {
 
 			name := item.ServiceApi.Name.Text()
 			if len(p.spec.Service.Name) > 0 && p.spec.Service.Name != name {
-				return errors.New(fmt.Sprintf("mulit service name defined %s and %s", name, p.spec.Service.Name))
+				return fmt.Errorf("mulit service name defined %s and %s", name, p.spec.Service.Name)
 			}
 			p.spec.Service.Name = name
 		}

tools/goctl/api/tsgen/genpacket.go

@@ -160,11 +160,11 @@ func pathForRoute(route spec.Route, group spec.Group) string {
 	prefix := group.GetAnnotation("pathPrefix")
 	if len(prefix) == 0 {
 		return "\"" + route.Path + "\""
-	} else {
-		prefix = strings.TrimPrefix(prefix, `"`)
-		prefix = strings.TrimSuffix(prefix, `"`)
-		return fmt.Sprintf(`"%s/%s"`, prefix, strings.TrimPrefix(route.Path, "/"))
 	}
+
+	prefix = strings.TrimPrefix(prefix, `"`)
+	prefix = strings.TrimSuffix(prefix, `"`)
+	return fmt.Sprintf(`"%s/%s"`, prefix, strings.TrimPrefix(route.Path, "/"))
 }
 
 func pathHasParams(route spec.Route) bool {

tools/goctl/api/tsgen/util.go

@@ -146,7 +146,8 @@ func writeMembers(writer io.Writer, tp spec.Type, isParam bool) error {
 		if ok {
 			return writeMembers(writer, pointType.Type, isParam)
 		}
-		return errors.New(fmt.Sprintf("type %s not supported", tp.Name()))
+
+		return fmt.Errorf("type %s not supported", tp.Name())
 	}
 
 	members := definedType.GetBodyMembers()

tools/goctl/model/sql/gen/imports.go

@@ -19,20 +19,20 @@ func genImports(withCache, timeImport bool) (string, error) {
 			return "", err
 		}
 
-		return buffer.String(), nil
-	} else {
-		text, err := util.LoadTemplate(category, importsWithNoCacheTemplateFile, template.ImportsNoCache)
-		if err != nil {
-			return "", err
-		}
-
-		buffer, err := util.With("import").Parse(text).Execute(map[string]interface{}{
-			"time": timeImport,
-		})
-		if err != nil {
-			return "", err
-		}
-
 		return buffer.String(), nil
 	}
+
+	text, err := util.LoadTemplate(category, importsWithNoCacheTemplateFile, template.ImportsNoCache)
+	if err != nil {
+		return "", err
+	}
+
+	buffer, err := util.With("import").Parse(text).Execute(map[string]interface{}{
+		"time": timeImport,
+	})
+	if err != nil {
+		return "", err
+	}
+
+	return buffer.String(), nil
 }

tools/goctl/model/sql/parser/error.go

@@ -5,7 +5,7 @@ import (
 )
 
 var (
-	unSupportDDL        = errors.New("unexpected type")
-	tableBodyIsNotFound = errors.New("create table spec not found")
-	errPrimaryKey       = errors.New("unexpected join primary key")
+	errUnsupportDDL      = errors.New("unexpected type")
+	errTableBodyNotFound = errors.New("create table spec not found")
+	errPrimaryKey        = errors.New("unexpected join primary key")
 )

tools/goctl/model/sql/parser/parser.go

@@ -52,7 +52,7 @@ func Parse(ddl string) (*Table, error) {
 
 	ddlStmt, ok := stmt.(*sqlparser.DDL)
 	if !ok {
-		return nil, unSupportDDL
+		return nil, errUnsupportDDL
 	}
 
 	action := ddlStmt.Action
@@ -63,7 +63,7 @@ func Parse(ddl string) (*Table, error) {
 	tableName := ddlStmt.NewName.Name.String()
 	tableSpec := ddlStmt.TableSpec
 	if tableSpec == nil {
-		return nil, tableBodyIsNotFound
+		return nil, errTableBodyNotFound
 	}
 
 	columns := tableSpec.Columns

tools/goctl/model/sql/parser/parser_test.go

@@ -14,7 +14,7 @@ func TestParsePlainText(t *testing.T) {
 
 func TestParseSelect(t *testing.T) {
 	_, err := Parse("select * from user")
-	assert.Equal(t, unSupportDDL, err)
+	assert.Equal(t, errUnsupportDDL, err)
 }
 
 func TestParseCreateTable(t *testing.T) {

tools/goctl/update/update.go

@@ -39,10 +39,9 @@ func forChksumHandler(file string, next http.Handler) http.Handler {
 		if chksum == r.Header.Get(contentMd5Header) {
 			w.WriteHeader(http.StatusNotModified)
 			return
-		} else {
-			w.Header().Set(contentMd5Header, chksum)
 		}
 
+		w.Header().Set(contentMd5Header, chksum)
 		next.ServeHTTP(w, r)
 	})
 }

tools/goctl/util/ctx/context.go

@@ -7,21 +7,19 @@ import (
 	"github.com/tal-tech/go-zero/tools/goctl/rpc/execx"
 )
 
-var moduleCheckErr = errors.New("the work directory must be found in the go mod or the $GOPATH")
+var errModuleCheck = errors.New("the work directory must be found in the go mod or the $GOPATH")
 
-type (
-	ProjectContext struct {
-		WorkDir string
-		// Name is the root name of the project
-		// eg: go-zero、greet
-		Name string
-		// Path identifies which module a project belongs to, which is module value if it's a go mod project,
-		// or else it is the root name of the project, eg: github.com/tal-tech/go-zero、greet
-		Path string
-		// Dir is the path of the project, eg: /Users/keson/goland/go/go-zero、/Users/keson/go/src/greet
-		Dir string
-	}
-)
+type ProjectContext struct {
+	WorkDir string
+	// Name is the root name of the project
+	// eg: go-zero、greet
+	Name string
+	// Path identifies which module a project belongs to, which is module value if it's a go mod project,
+	// or else it is the root name of the project, eg: github.com/tal-tech/go-zero、greet
+	Path string
+	// Dir is the path of the project, eg: /Users/keson/goland/go/go-zero、/Users/keson/go/src/greet
+	Dir string
+}
 
 // Prepare checks the project which module belongs to,and returns the path and module.
 // workDir parameter is the directory of the source of generating code,

tools/goctl/util/ctx/gopath.go

@@ -25,7 +25,7 @@ func projectFromGoPath(workDir string) (*ProjectContext, error) {
 	goPath := buildContext.GOPATH
 	goSrc := filepath.Join(goPath, "src")
 	if !util.FileExists(goSrc) {
-		return nil, moduleCheckErr
+		return nil, errModuleCheck
 	}
 
 	wd, err := filepath.Abs(workDir)
@@ -34,7 +34,7 @@ func projectFromGoPath(workDir string) (*ProjectContext, error) {
 	}
 
 	if !strings.HasPrefix(wd, goSrc) {
-		return nil, moduleCheckErr
+		return nil, errModuleCheck
 	}
 
 	projectName := strings.TrimPrefix(wd, goSrc+string(filepath.Separator))

zrpc/internal/balancer/p2c/p2c.go

@@ -155,10 +155,10 @@ func (p *p2cPicker) choose(c1, c2 *subConn) *subConn {
 	pick := atomic.LoadInt64(&c2.pick)
 	if start-pick > forcePick && atomic.CompareAndSwapInt64(&c2.pick, pick, start) {
 		return c2
-	} else {
-		atomic.StoreInt64(&c1.pick, start)
-		return c1
 	}
+
+	atomic.StoreInt64(&c1.pick, start)
+	return c1
 }
 
 func (p *p2cPicker) logStats() {
@@ -196,7 +196,7 @@ func (c *subConn) load() int64 {
 	load := lag * (atomic.LoadInt64(&c.inflight) + 1)
 	if load == 0 {
 		return penalty
-	} else {
-		return load
 	}
+
+	return load
 }

zrpc/internal/resolver/subset.go

@@ -8,7 +8,7 @@ func subset(set []string, sub int) []string {
 	})
 	if len(set) <= sub {
 		return set
-	} else {
-		return set[:sub]
 	}
+
+	return set[:sub]
 }

zrpc/internal/serverinterceptors/sheddinginterceptor_test.go

@@ -62,9 +62,9 @@ type mockedShedder struct {
 func (m mockedShedder) Allow() (load.Promise, error) {
 	if m.allow {
 		return mockedPromise{}, nil
-	} else {
-		return nil, load.ErrServiceOverloaded
 	}
+
+	return nil, load.ErrServiceOverloaded
 }
 
 type mockedPromise struct {

zrpc/server.go

@@ -109,9 +109,9 @@ func figureOutListenOn(listenOn string) string {
 	}
 	if len(ip) == 0 {
 		return listenOn
-	} else {
-		return strings.Join(append([]string{ip}, fields[1:]...), ":")
 	}
+
+	return strings.Join(append([]string{ip}, fields[1:]...), ":")
 }
 
 func setupInterceptors(server internal.Server, c RpcServerConf, metrics *stat.Metrics) error {