chore: upgrade go version to go1.19 (#46)

* chore: upgrade go version to go1.19

* chore: upgrade github actions

.github/workflows/release.yml

@@ -13,10 +13,10 @@ jobs:
       name: release
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v2
+        uses: goreleaser/goreleaser-action@v3
         if: success() && startsWith(github.ref, 'refs/tags/')
         with:
           version: latest

.github/workflows/test.yml

@@ -16,30 +16,30 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Set up Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v3
         with:
-          go-version: 1.15.x
+          go-version: 1.19.x
 
       - name: Cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: |
             ~/.cache/go-build
             ~/go/pkg/mod
           key: cache-go-${{ runner.os }}-1.15.x-${{ github.run_number }}
           restore-keys: |
-            cache-go-${{ runner.os}}-1.15.x-
+            cache-go-${{ runner.os}}-1.19.x-
 
       - name: Build
         run: make build-all
 
       - name: Lint
         uses: golangci/golangci-lint-action@v3
         with:
-          version: v1.45
+          version: v1.50
           skip-pkg-cache: true
           skip-build-cache: true
 
@@ -52,20 +52,20 @@ jobs:
       GO111MODULE: on
     strategy:
       matrix:
-        os: [ ubuntu-latest, macos-latest, windows-latest ]
-        go-version: [ 1.16.x, 1.17.x, 1.18.x ]
+        os: [ubuntu-latest, macos-12, windows-latest]
+        go-version: [1.17.x, 1.18.x, 1.19.x]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Set up Go ${{ matrix.go-version}}
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v3
         with:
           go-version: ${{ matrix.go-version}}
 
       - name: Cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: |
             ~/.cache/go-build
@@ -80,7 +80,7 @@ jobs:
         run: make test-v
 
       - name: Upload coverage
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v3
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: .testCoverage.txt

.golangci.yml

@@ -18,7 +18,7 @@ run:
   # can use regexp here: generated.*, regexp is applied on full path;
   # default value is empty list, but default dirs are skipped independently
   # from this option's value (see skip-dirs-use-default).
-  skip-dirs: [ 'examples', 'internal/mock' ]
+  skip-dirs: ['examples', 'internal/mock']
 
   # default is true. Enables skipping of directories:
   #   vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
@@ -43,10 +43,7 @@ linters:
     - staticcheck
     - unused
     - gosimple
-    - structcheck
-    - varcheck
     - ineffassign
-    - deadcode
     - typecheck
     - goconst
     - gofmt
@@ -55,6 +52,4 @@ linters:
     - unparam
     - exportloopref
     - godot
-
-    #- scopelint deprecated, use exportloopref instead.
   fast: true

logger.go

@@ -1,8 +1,11 @@
+//go:build go1.16
+// +build go1.16
+
 package easytcp
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"os"
 )
@@ -26,7 +29,7 @@ func newLogger() *DefaultLogger {
 
 func newMuteLogger() *DefaultLogger {
 	return &DefaultLogger{
-		rawLogger: log.New(ioutil.Discard, "easytcp", log.LstdFlags),
+		rawLogger: log.New(io.Discard, "easytcp", log.LstdFlags),
 	}
 }
 

logger_before_1.16.go

@@ -0,0 +1,55 @@
+//go:build !go1.16
+// +build !go1.16
+
+package easytcp
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+)
+
+var _ Logger = &DefaultLogger{}
+
+// Log is the instance of Logger interface.
+var Log Logger = newMuteLogger()
+
+// Logger is the generic interface for log recording.
+type Logger interface {
+	Errorf(format string, args ...interface{})
+	Tracef(format string, args ...interface{})
+}
+
+func newLogger() *DefaultLogger {
+	return &DefaultLogger{
+		rawLogger: log.New(os.Stdout, "easytcp ", log.Ldate|log.Ltime|log.Lmicroseconds|log.Lmsgprefix),
+	}
+}
+
+func newMuteLogger() *DefaultLogger {
+	return &DefaultLogger{
+		rawLogger: log.New(ioutil.Discard, "easytcp", log.LstdFlags),
+	}
+}
+
+// DefaultLogger is the default logger instance for this package.
+// DefaultLogger uses the built-in log.Logger.
+type DefaultLogger struct {
+	rawLogger *log.Logger
+}
+
+// Errorf implements Logger Errorf method.
+func (d *DefaultLogger) Errorf(format string, args ...interface{}) {
+	d.rawLogger.Printf("[ERROR] %s", fmt.Sprintf(format, args...))
+}
+
+// Tracef implements Logger Tracef method.
+func (d *DefaultLogger) Tracef(format string, args ...interface{}) {
+	d.rawLogger.Printf("[TRACE] %s", fmt.Sprintf(format, args...))
+}
+
+// SetLogger sets the package logger.
+func SetLogger(lg Logger) {
+	Log = lg
+}

router.go

@@ -42,11 +42,11 @@ type HandlerFunc func(ctx Context)
 // MiddlewareFunc is the function type for middlewares.
 // A common pattern is like:
 //
-// 	var mf MiddlewareFunc = func(next HandlerFunc) HandlerFunc {
-// 		return func(ctx Context) {
-// 			next(ctx)
-// 		}
-// 	}
+//	var mf MiddlewareFunc = func(next HandlerFunc) HandlerFunc {
+//		return func(ctx Context) {
+//			next(ctx)
+//		}
+//	}
 type MiddlewareFunc func(next HandlerFunc) HandlerFunc
 
 var nilHandler HandlerFunc = func(ctx Context) {}
@@ -77,7 +77,8 @@ func (r *Router) handleRequest(ctx Context) {
 
 // wrapHandlers wraps handler and middlewares into a right order call stack.
 // Makes something like:
-// 	var wrapped HandlerFunc = m1(m2(m3(handle)))
+//
+//	var wrapped HandlerFunc = m1(m2(m3(handle)))
 func (r *Router) wrapHandlers(handler HandlerFunc, middles []MiddlewareFunc) (wrapped HandlerFunc) {
 	if handler == nil {
 		handler = r.notFoundHandler