chore: add golangci-lint config file (#2519)

* chore: add golangci-lint config file

* chore: member alignment

.golangci.yml

@@ -0,0 +1,64 @@
+linters-settings:
+  errcheck:
+    check-type-assertions: true
+  goconst:
+    min-len: 2
+    min-occurrences: 3
+  gocritic:
+    enabled-tags:
+      - diagnostic
+      - experimental
+      - opinionated
+      - performance
+      - style
+  govet:
+    check-shadowing: true
+    enable:
+      - fieldalignment
+  nolintlint:
+    require-explanation: true
+    require-specific: true
+  staticcheck:
+    checks:
+      - all
+      - '-SA5008'
+
+linters:
+  disable-all: true
+  enable:
+    - bodyclose
+    - depguard
+    - dogsled
+    - dupl
+    - errcheck
+    - exportloopref
+    - exhaustive
+    - goconst
+    - gocritic
+    - gofmt
+    - goimports
+    - gomnd
+    - gocyclo
+    - gosec
+    - gosimple
+    - govet
+    - ineffassign
+    - misspell
+    - nolintlint
+    - nakedret
+    - prealloc
+    - predeclared
+    - revive
+    - staticcheck
+    - stylecheck
+    - thelper
+    - tparallel
+    - typecheck
+    - unconvert
+    - unparam
+    - unused
+    - whitespace
+    - wsl
+
+run:
+  issues-exit-code: 1

core/conf/config_test.go

@@ -105,7 +105,6 @@ d = "abcd!@#112"
 	assert.Equal(t, 1, val.B)
 	assert.Equal(t, "2", val.C)
 	assert.Equal(t, "abcd!@#112", val.D)
-
 }
 
 func TestConfigJsonEnv(t *testing.T) {

core/limit/tokenlimit.go

@@ -60,8 +60,8 @@ type TokenLimiter struct {
 	timestampKey   string
 	rescueLock     sync.Mutex
 	redisAlive     uint32
-	rescueLimiter  *xrate.Limiter
 	monitorStarted bool
+	rescueLimiter  *xrate.Limiter
 }
 
 // NewTokenLimiter returns a new TokenLimiter that allows events up to rate and permits

core/logx/writer.go

@@ -361,7 +361,6 @@ func writePlainText(writer io.Writer, level, msg string, fields ...string) {
 	if _, err := writer.Write(buf.Bytes()); err != nil {
 		log.Println(err.Error())
 	}
-
 }
 
 func writePlainValue(writer io.Writer, level string, val interface{}, fields ...string) {

core/mapping/unmarshaler.go

@@ -139,7 +139,6 @@ func (u *Unmarshaler) processAnonymousFieldOptional(field reflect.StructField, v
 				filled = true
 				maybeNewValue(field, value)
 				indirectValue = reflect.Indirect(value)
-
 			}
 			if err = u.processField(subField, indirectValue.Field(i), m, fullName); err != nil {
 				return err

rest/chain/chain_test.go

@@ -86,7 +86,7 @@ func TestThenOrdersHandlersCorrectly(t *testing.T) {
 	chained := New(t1, t2, t3).Then(testApp)
 
 	w := httptest.NewRecorder()
-	r, err := http.NewRequest("GET", "/", nil)
+	r, err := http.NewRequest("GET", "/", http.NoBody)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -103,7 +103,7 @@ func TestAppendAddsHandlersCorrectly(t *testing.T) {
 	h := c.Then(testApp)
 
 	w := httptest.NewRecorder()
-	r, err := http.NewRequest("GET", "/", nil)
+	r, err := http.NewRequest("GET", "/", http.NoBody)
 	assert.Nil(t, err)
 
 	h.ServeHTTP(w, r)

rest/engine_test.go

@@ -238,7 +238,7 @@ func TestEngine_notFoundHandler(t *testing.T) {
 
 	client := ts.Client()
 	err := func(ctx context.Context) error {
-		req, err := http.NewRequest("GET", ts.URL+"/bad", nil)
+		req, err := http.NewRequest("GET", ts.URL+"/bad", http.NoBody)
 		assert.Nil(t, err)
 		res, err := client.Do(req)
 		assert.Nil(t, err)
@@ -261,7 +261,7 @@ func TestEngine_notFoundHandlerNotNil(t *testing.T) {
 
 	client := ts.Client()
 	err := func(ctx context.Context) error {
-		req, err := http.NewRequest("GET", ts.URL+"/bad", nil)
+		req, err := http.NewRequest("GET", ts.URL+"/bad", http.NoBody)
 		assert.Nil(t, err)
 		res, err := client.Do(req)
 		assert.Nil(t, err)
@@ -285,8 +285,8 @@ func TestEngine_notFoundHandlerNotNilWriteHeader(t *testing.T) {
 	defer ts.Close()
 
 	client := ts.Client()
-	err := func(ctx context.Context) error {
+	err := func(_ context.Context) error {
-		req, err := http.NewRequest("GET", ts.URL+"/bad", nil)
+		req, err := http.NewRequest("GET", ts.URL+"/bad", http.NoBody)
 		assert.Nil(t, err)
 		res, err := client.Do(req)
 		assert.Nil(t, err)

rest/httpx/responses_test.go

@@ -200,7 +200,7 @@ func (w *tracedResponseWriter) Write(bytes []byte) (n int, err error) {
 
 	n, err = w.builder.Write(bytes)
 	if w.lessWritten {
-		n -= 1
+		n--
 	}
 	w.hasBody = true