refactor: replace map iteration with maps.Copy/Clone

Signed-off-by: whosehang <whosehang@outlook.com>

configuration/configuration_test.go

@@ -2,6 +2,7 @@ package configuration
 
 import (
 	"bytes"
+	"maps"
 	"net/http"
 	"reflect"
 	"strings"
@@ -507,9 +508,7 @@ func copyConfig(config Configuration) *Configuration {
 	configCopy.Log = config.Log
 	configCopy.Catalog = config.Catalog
 	configCopy.Log.Fields = make(map[string]interface{}, len(config.Log.Fields))
-	for k, v := range config.Log.Fields {
-		configCopy.Log.Fields[k] = v
-	}
+	maps.Copy(configCopy.Log.Fields, config.Log.Fields)
 
 	configCopy.Storage = Storage{config.Storage.Type(): Parameters{}}
 	for k, v := range config.Storage.Parameters() {
@@ -528,9 +527,7 @@ func copyConfig(config Configuration) *Configuration {
 	configCopy.Notifications.Endpoints = append(configCopy.Notifications.Endpoints, config.Notifications.Endpoints...)
 
 	configCopy.HTTP.Headers = make(http.Header)
-	for k, v := range config.HTTP.Headers {
-		configCopy.HTTP.Headers[k] = v
-	}
+	maps.Copy(configCopy.HTTP.Headers, config.HTTP.Headers)
 	configCopy.HTTP.TLS.ClientCAs = make([]string, 0, len(config.HTTP.TLS.ClientCAs))
 	configCopy.HTTP.TLS.ClientCAs = append(configCopy.HTTP.TLS.ClientCAs, config.HTTP.TLS.ClientCAs...)
 	configCopy.HTTP.TLS.ClientAuth = config.HTTP.TLS.ClientAuth

internal/client/auth/session_test.go

@@ -3,6 +3,7 @@ package auth
 import (
 	"encoding/base64"
 	"fmt"
+	"maps"
 	"net/http"
 	"net/http/httptest"
 	"net/url"
@@ -38,9 +39,7 @@ func (w *testAuthenticationWrapper) ServeHTTP(rw http.ResponseWriter, r *http.Re
 	auth := r.Header.Get("Authorization")
 	if auth == "" || !w.authCheck(auth) {
 		h := rw.Header()
-		for k, values := range w.headers {
-			h[k] = values
-		}
+		maps.Copy(h, w.headers)
 		rw.WriteHeader(http.StatusUnauthorized)
 		return
 	}

internal/dcontext/context.go

@@ -2,6 +2,7 @@ package dcontext
 
 import (
 	"context"
+	"maps"
 	"sync"
 
 	"github.com/google/uuid"
@@ -52,9 +53,7 @@ type stringMapContext struct {
 // supports string keys.
 func WithValues(ctx context.Context, m map[string]interface{}) context.Context {
 	mo := make(map[string]interface{}, len(m)) // make our own copy.
-	for k, v := range m {
-		mo[k] = v
-	}
+	maps.Copy(mo, m)
 
 	return stringMapContext{
 		Context: ctx,

notifications/endpoint.go

@@ -1,6 +1,7 @@
 package notifications
 
 import (
+	"maps"
 	"net/http"
 	"time"
 
@@ -92,7 +93,5 @@ func (e *Endpoint) ReadMetrics(em *EndpointMetrics) {
 	*em = e.metrics.EndpointMetrics
 	// Map still need to copied in a threadsafe manner.
 	em.Statuses = make(map[string]int)
-	for k, v := range e.metrics.Statuses {
-		em.Statuses[k] = v
-	}
+	maps.Copy(em.Statuses, e.metrics.Statuses)
 }

testutil/handler.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"fmt"
 	"io"
+	"maps"
 	"net/http"
 	"net/url"
 	"sort"
@@ -137,9 +138,7 @@ func (app *testHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	app.responseMap[request.String()] = responses[1:]
 
 	responseHeader := w.Header()
-	for k, v := range response.Headers {
-		responseHeader[k] = v
-	}
+	maps.Copy(responseHeader, response.Headers)
 
 	w.WriteHeader(response.StatusCode)