feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

backend/pkg/errorx/internal/stack.go

@@ -0,0 +1,86 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package internal
+
+import (
+	"errors"
+	"fmt"
+	"runtime"
+	"strings"
+)
+
+type StackTracer interface {
+	StackTrace() string
+}
+
+type withStack struct {
+	cause error
+	stack string
+}
+
+func (w *withStack) Unwrap() error {
+	return w.cause
+}
+
+func (w *withStack) StackTrace() string {
+	return w.stack
+}
+
+func (w *withStack) Error() string {
+	return fmt.Sprintf("%s\nstack=%s", w.cause.Error(), w.stack)
+}
+
+func stack() string {
+	const depth = 32
+	var pcs [depth]uintptr
+	n := runtime.Callers(2, pcs[:])
+
+	b := strings.Builder{}
+	for i := 0; i < n; i++ {
+		fn := runtime.FuncForPC(pcs[i])
+
+		file, line := fn.FileLine(pcs[i])
+		name := trimPathPrefix(fn.Name())
+		b.WriteString(fmt.Sprintf("%s:%d %s\n", file, line, name))
+	}
+
+	return b.String()
+}
+
+func trimPathPrefix(s string) string {
+	i := strings.LastIndex(s, "/")
+	s = s[i+1:]
+	i = strings.Index(s, ".")
+	return s[i+1:]
+}
+
+func withStackTraceIfNotExists(err error) error {
+	if err == nil {
+		return nil
+	}
+
+	// skip if stack has already exist
+	var stackTracer StackTracer
+	if errors.As(err, &stackTracer) {
+		return err
+	}
+
+	return &withStack{
+		err,
+		stack(),
+	}
+}