mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-20 20:10:22 +00:00
66 lines
2.1 KiB
Go
66 lines
2.1 KiB
Go
/*
|
|
Copyright 2023 The Kubernetes 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 klog
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/go-logr/logr"
|
|
)
|
|
|
|
// Format wraps a value of an arbitrary type and implement fmt.Stringer and
|
|
// logr.Marshaler for them. Stringer returns pretty-printed JSON. MarshalLog
|
|
// returns the original value with a type that has no special methods, in
|
|
// particular no MarshalLog or MarshalJSON.
|
|
//
|
|
// Wrapping values like that is useful when the value has a broken
|
|
// implementation of these special functions (for example, a type which
|
|
// inherits String from TypeMeta, but then doesn't re-implement String) or the
|
|
// implementation produces output that is less readable or unstructured (for
|
|
// example, the generated String functions for Kubernetes API types).
|
|
func Format(obj interface{}) interface{} {
|
|
return formatAny{Object: obj}
|
|
}
|
|
|
|
type formatAny struct {
|
|
Object interface{}
|
|
}
|
|
|
|
func (f formatAny) String() string {
|
|
var buffer strings.Builder
|
|
encoder := json.NewEncoder(&buffer)
|
|
encoder.SetIndent("", " ")
|
|
if err := encoder.Encode(&f.Object); err != nil {
|
|
return fmt.Sprintf("error marshaling %T to JSON: %v", f, err)
|
|
}
|
|
return buffer.String()
|
|
}
|
|
|
|
func (f formatAny) MarshalLog() interface{} {
|
|
// Returning a pointer to a pointer ensures that zapr doesn't find a
|
|
// fmt.Stringer or logr.Marshaler when it checks the type of the
|
|
// value. It then falls back to reflection, which dumps the value being
|
|
// pointed to (JSON doesn't have pointers).
|
|
ptr := &f.Object
|
|
return &ptr
|
|
}
|
|
|
|
var _ fmt.Stringer = formatAny{}
|
|
var _ logr.Marshaler = formatAny{}
|