fix: logging middle don't get trace_id value when logger is filterLogger (#2869)

* Description (what this PR does / why we need it):
fix logging middle don't get trace_id value when logger is filterLogger

Which issue(s) this PR fixes (resolves / be part of):
 #2570
 #2571

* format

* fix:remove unuse test

log/filter.go

@@ -1,5 +1,7 @@
 package log
 
+import "context"
+
 // FilterOption is filter option.
 type FilterOption func(*Filter)
 
@@ -39,6 +41,7 @@ func FilterFunc(f func(level Level, keyvals ...interface{}) bool) FilterOption {
 
 // Filter is a logger filter.
 type Filter struct {
+	ctx    context.Context
 	logger Logger
 	level  Level
 	key    map[interface{}]struct{}
@@ -67,6 +70,9 @@ func (f *Filter) Log(level Level, keyvals ...interface{}) error {
 	// prefixkv contains the slice of arguments defined as prefixes during the log initialization
 	var prefixkv []interface{}
 	l, ok := f.logger.(*logger)
+	if ok {
+		l.ctx = f.ctx
+	}
 	if ok && len(l.prefix) > 0 {
 		prefixkv = make([]interface{}, 0, len(l.prefix))
 		prefixkv = append(prefixkv, l.prefix...)

log/filter_test.go

@@ -2,7 +2,9 @@ package log
 
 import (
 	"bytes"
+	"context"
 	"io"
+	"strings"
 	"testing"
 )
 
@@ -140,3 +142,33 @@ func testFilterFuncWithLoggerPrefix(level Level, keyvals ...interface{}) bool {
 	}
 	return false
 }
+
+func TestFilterWithContext(t *testing.T) {
+	ctxKey := struct{}{}
+	ctxValue := "filter test value"
+
+	v1 := func() Valuer {
+		return func(ctx context.Context) interface{} {
+			return ctx.Value(ctxKey)
+		}
+	}
+
+	info := &bytes.Buffer{}
+
+	logger := With(NewStdLogger(info), "request_id", v1())
+	filter := NewFilter(logger, FilterLevel(LevelError))
+
+	ctx := context.WithValue(context.Background(), ctxKey, ctxValue)
+
+	_ = WithContext(ctx, filter).Log(LevelInfo, "kind", "test")
+
+	if info.String() != "" {
+		t.Error("filter is not woring")
+		return
+	}
+
+	_ = WithContext(ctx, filter).Log(LevelError, "kind", "test")
+	if !strings.Contains(info.String(), ctxValue) {
+		t.Error("don't read ctx value")
+	}
+}

log/log.go

@@ -51,13 +51,27 @@ func With(l Logger, kv ...interface{}) Logger {
 // to ctx. The provided ctx must be non-nil.
 func WithContext(ctx context.Context, l Logger) Logger {
 	c, ok := l.(*logger)
-	if !ok {
-		return &logger{logger: l, ctx: ctx}
+	if ok {
+		return &logger{
+			logger:    c.logger,
+			prefix:    c.prefix,
+			hasValuer: c.hasValuer,
+			ctx:       ctx,
+		}
 	}
-	return &logger{
-		logger:    c.logger,
-		prefix:    c.prefix,
-		hasValuer: c.hasValuer,
-		ctx:       ctx,
+
+	f, ok := l.(*Filter)
+	if ok {
+		f.ctx = ctx
+		return &Filter{
+			ctx:    ctx,
+			logger: f.logger,
+			level:  f.level,
+			key:    f.key,
+			value:  f.value,
+			filter: f.filter,
+		}
 	}
+
+	return &logger{logger: l, ctx: ctx}
 }