github.com/timstclair/heapster@v0.20.0-alpha1/Godeps/_workspace/src/k8s.io/kubernetes/pkg/util/hash.go (about)

     1  /*
     2  Copyright 2015 The Kubernetes Authors All rights reserved.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package util
    18  
    19  import (
    20  	"hash"
    21  
    22  	"github.com/davecgh/go-spew/spew"
    23  )
    24  
    25  // DeepHashObject writes specified object to hash using the spew library
    26  // which follows pointers and prints actual values of the nested objects
    27  // ensuring the hash does not change when a pointer changes.
    28  func DeepHashObject(hasher hash.Hash, objectToWrite interface{}) {
    29  	hasher.Reset()
    30  	printer := spew.ConfigState{
    31  		Indent:         " ",
    32  		SortKeys:       true,
    33  		DisableMethods: true,
    34  		SpewKeys:       true,
    35  	}
    36  	printer.Fprintf(hasher, "%#v", objectToWrite)
    37  }