Mercurial > gemma
annotate pkg/common/attributes.go @ 3678:8f58851927c0
client: make layer factory only return new layer config for individual maps
instead of each time it is invoked. The purpose of the factory was to support multiple maps with individual layers.
But returning a new config each time it is invoked leads to bugs that rely on the layer's state. Now this factory
reuses the same objects it created before, per map.
author | Markus Kottlaender <markus@intevation.de> |
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date | Mon, 17 Jun 2019 17:31:35 +0200 |
parents | dc4fae4bdb8f |
children | 8c5df0f3562e |
rev | line source |
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1 // This is Free Software under GNU Affero General Public License v >= 3.0 |
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2 // without warranty, see README.md and license for details. |
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3 // |
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4 // SPDX-License-Identifier: AGPL-3.0-or-later |
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5 // License-Filename: LICENSES/AGPL-3.0.txt |
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6 // |
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7 // Copyright (C) 2018, 2019 by via donau |
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH |
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9 // Software engineering by Intevation GmbH |
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10 // |
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11 // Author(s): |
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12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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13 // * Tom Gottfried <tom.gottfried@intevation.de> |
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14 |
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15 package common |
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16 |
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17 import ( |
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18 "log" |
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19 "strconv" |
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20 "strings" |
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21 "time" |
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22 ) |
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23 |
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24 type ( |
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25 // Attributes is a map of optional key/value attributes |
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26 // of a configuration. |
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27 Attributes map[string]string |
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28 |
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29 AttributesMarshaler interface { |
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30 MarshalAttributes(Attributes) error |
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31 } |
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32 |
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33 AttributesUnmarshaler interface { |
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34 UnmarshalAttributes(Attributes) error |
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35 } |
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36 ) |
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37 |
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38 func (ca Attributes) Marshal(src interface{}) error { |
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39 if ca == nil { |
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40 return nil |
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41 } |
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42 var err error |
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43 if m, ok := src.(AttributesMarshaler); ok { |
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44 err = m.MarshalAttributes(ca) |
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45 } |
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46 return err |
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47 } |
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48 |
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49 func (ca Attributes) Unmarshal(dst interface{}) error { |
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50 if ca == nil { |
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51 return nil |
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52 } |
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53 var err error |
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54 if um, ok := dst.(AttributesUnmarshaler); ok { |
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55 err = um.UnmarshalAttributes(ca) |
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56 } |
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57 return err |
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58 } |
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59 |
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60 func (ca Attributes) Delete(key string) bool { |
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61 if ca == nil { |
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62 return false |
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63 } |
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64 if _, found := ca[key]; !found { |
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65 return false |
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66 } |
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67 delete(ca, key) |
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68 return true |
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69 } |
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70 |
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71 // Get fetches a value for given key out of the configuration. |
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72 // If the key was not found the bool component of the return value |
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73 // return false. |
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74 func (ca Attributes) Get(key string) (string, bool) { |
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75 if ca == nil { |
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76 return "", false |
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77 } |
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78 value, found := ca[key] |
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79 return value, found |
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80 } |
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81 |
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82 func (ca Attributes) Set(key, value string) bool { |
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83 if ca == nil { |
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84 return false |
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85 } |
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86 ca[key] = value |
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87 return true |
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88 } |
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89 |
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90 // Bool returns a bool value for a given key. |
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91 func (ca Attributes) Bool(key string) bool { |
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92 s, found := ca.Get(key) |
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93 return found && strings.ToLower(s) == "true" |
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94 } |
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95 |
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96 func (ca Attributes) SetBool(key string, value bool) bool { |
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97 var v string |
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98 if value { |
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99 v = "true" |
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100 } else { |
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101 v = "false" |
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102 } |
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103 return ca.Set(key, v) |
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104 } |
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105 |
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106 func (ca Attributes) Date(key string) (time.Time, bool) { |
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107 s, found := ca.Get(key) |
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108 if !found { |
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109 return time.Time{}, false |
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110 } |
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111 d, err := time.Parse(DateFormat, s) |
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112 if err != nil { |
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113 log.Printf("error: %v\n", err) |
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114 return time.Time{}, false |
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115 } |
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116 return d, true |
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117 } |
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118 |
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119 func (ca Attributes) SetDate(key string, date time.Time) bool { |
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120 s := date.Format(DateFormat) |
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121 return ca.Set(key, s) |
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122 } |
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123 |
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124 // Time gives a time.Time for a given key. |
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125 func (ca Attributes) Time(key string) (time.Time, bool) { |
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126 s, found := ca.Get(key) |
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127 if !found { |
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128 return time.Time{}, false |
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129 } |
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130 t, err := time.Parse(TimeFormat, s) |
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131 if err != nil { |
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132 log.Printf("error: %v\n", err) |
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133 return time.Time{}, false |
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134 } |
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135 return t, true |
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136 } |
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137 |
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138 func (ca Attributes) SetTime(key string, t time.Time) bool { |
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139 value := t.Format(TimeFormat) |
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140 return ca.Set(key, value) |
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141 |
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142 } |
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143 |
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144 func (ca Attributes) Int(key string) (int, bool) { |
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145 s, found := ca.Get(key) |
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146 if !found { |
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147 return 0, false |
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148 } |
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149 i, err := strconv.Atoi(s) |
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150 if err != nil { |
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151 log.Printf("error: %v\n", err) |
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152 return 0, false |
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153 } |
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154 return i, true |
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155 } |
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156 |
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157 func (ca Attributes) SetInt(key string, value int) bool { |
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158 v := strconv.Itoa(value) |
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159 return ca.Set(key, v) |
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160 } |
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161 |
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162 func (ca Attributes) Float(key string) (float64, bool) { |
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163 s, found := ca.Get(key) |
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164 if !found { |
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165 return 0, false |
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166 } |
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167 f, err := strconv.ParseFloat(s, 64) |
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168 if err != nil { |
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169 log.Printf("error: %v\n", err) |
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170 return 0, false |
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171 } |
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172 return f, true |
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173 } |
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174 |
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175 func (ca Attributes) SetFloat(key string, value float64) bool { |
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176 v := strconv.FormatFloat(value, 'e', -1, 64) |
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177 return ca.Set(key, v) |
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178 } |
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179 |
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180 func (ca Attributes) Duration(key string) (time.Duration, bool) { |
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181 s, found := ca.Get(key) |
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182 if !found { |
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183 return 0, false |
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184 } |
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185 d, err := time.ParseDuration(s) |
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186 if err != nil { |
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187 log.Printf("error: %v\n", err) |
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188 return 0, false |
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189 } |
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190 return d, true |
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191 } |
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192 |
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193 func (ca Attributes) SetDuration(key string, value time.Duration) bool { |
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194 v := value.String() |
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195 return ca.Set(key, v) |
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196 } |