github.com/banzaicloud/operator-tools@v0.28.10/pkg/utils/types.go (about)

     1  // Copyright © 2020 Banzai Cloud
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //    http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package utils
    16  
    17  import (
    18  	"fmt"
    19  	"hash/fnv"
    20  	"sort"
    21  
    22  	"emperror.dev/errors"
    23  	"github.com/iancoleman/orderedmap"
    24  	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    25  	"k8s.io/apimachinery/pkg/types"
    26  )
    27  
    28  // MergeLabels merge into map[string]string map
    29  func MergeLabels(labelGroups ...map[string]string) map[string]string {
    30  	mergedLabels := make(map[string]string)
    31  	for _, labels := range labelGroups {
    32  		for k, v := range labels {
    33  			mergedLabels[k] = v
    34  		}
    35  	}
    36  	return mergedLabels
    37  }
    38  
    39  func PointerToBool(b *bool) bool {
    40  	if b == nil {
    41  		return false
    42  	}
    43  
    44  	return *b
    45  }
    46  
    47  func PointerToUint(i *uint) uint {
    48  	if i == nil {
    49  		return 0
    50  	}
    51  
    52  	return *i
    53  }
    54  
    55  func PointerToInt(i *int) int {
    56  	if i == nil {
    57  		return 0
    58  	}
    59  
    60  	return *i
    61  }
    62  
    63  func PointerToInt32(i *int32) int32 {
    64  	if i == nil {
    65  		return 0
    66  	}
    67  
    68  	return *i
    69  }
    70  
    71  func PointerToString(s *string) string {
    72  	if s == nil {
    73  		return ""
    74  	}
    75  
    76  	return *s
    77  }
    78  
    79  // IntPointer converts int32 to *int32
    80  func IntPointer(i int32) *int32 {
    81  	return &i
    82  }
    83  
    84  // IntPointer converts int64 to *int64
    85  func IntPointer64(i int64) *int64 {
    86  	return &i
    87  }
    88  
    89  // BoolPointer converts bool to *bool
    90  func BoolPointer(b bool) *bool {
    91  	return &b
    92  }
    93  
    94  // StringPointer converts string to *string
    95  func StringPointer(s string) *string {
    96  	return &s
    97  }
    98  
    99  // OrderedStringMap
   100  func OrderedStringMap(original map[string]string) *orderedmap.OrderedMap {
   101  	o := orderedmap.New()
   102  	for k, v := range original {
   103  		o.Set(k, v)
   104  	}
   105  	o.SortKeys(sort.Strings)
   106  	return o
   107  }
   108  
   109  // Contains check if a string item exists in []string
   110  func Contains(s []string, e string) bool {
   111  	for _, i := range s {
   112  		if i == e {
   113  			return true
   114  		}
   115  	}
   116  	return false
   117  }
   118  
   119  // Hash32 calculate for string
   120  func Hash32(in string) (string, error) {
   121  	hasher := fnv.New32()
   122  	_, err := hasher.Write([]byte(in))
   123  	if err != nil {
   124  		return "", errors.WrapIf(err, "failed to calculate hash for the configmap data")
   125  	}
   126  	return fmt.Sprintf("%x", hasher.Sum32()), nil
   127  }
   128  
   129  func ObjectKeyFromObjectMeta(o v1.Object) types.NamespacedName {
   130  	return types.NamespacedName{Namespace: o.GetNamespace(), Name: o.GetName()}
   131  }