Mercurial > gemma
annotate pkg/controllers/system.go @ 5650:cb3c4ba0f052 DQR adjustments
Merged default branch
author | Sascha Wilde <wilde@sha-bang.de> |
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date | Thu, 29 Jun 2023 13:18:54 +0200 |
parents | 5f47eeea988d |
children | 31973f6f5cca |
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 Wilde <sascha.wilde@intevation.de> |
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13 |
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14 package controllers |
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15 |
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16 import ( |
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17 "bytes" |
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18 "context" |
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19 "database/sql" |
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20 "fmt" |
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21 "io/ioutil" |
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22 "net/http" |
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23 "regexp" |
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24 "strings" |
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25 "sync" |
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26 "time" |
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27 |
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28 "github.com/gorilla/mux" |
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29 |
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30 "gemma.intevation.de/gemma/pkg/auth" |
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31 "gemma.intevation.de/gemma/pkg/common" |
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32 "gemma.intevation.de/gemma/pkg/config" |
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33 "gemma.intevation.de/gemma/pkg/geoserver" |
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34 "gemma.intevation.de/gemma/pkg/imports" |
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35 "gemma.intevation.de/gemma/pkg/log" |
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36 "gemma.intevation.de/gemma/pkg/models" |
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37 |
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38 mw "gemma.intevation.de/gemma/pkg/middleware" |
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39 ) |
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40 |
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41 const ( |
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42 getSettingsSQL = ` |
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43 SELECT config_key, config_val |
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44 FROM sys_admin.system_config` |
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45 |
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46 getConfigSQL = ` |
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47 SELECT config_val |
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48 FROM sys_admin.system_config |
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49 WHERE config_key = $1` |
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50 |
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51 updateSettingSQL = ` |
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52 INSERT INTO sys_admin.system_config (config_key, config_val) |
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53 VALUES ($1, $2) |
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54 ON CONFLICT (config_key) DO UPDATE SET config_val = $2` |
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55 |
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56 deleteSoundingDiffsSQL = ` |
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57 DELETE FROM caching.sounding_differences` |
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58 ) |
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59 |
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60 // System status end points |
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61 |
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62 func showSystemLog(req *http.Request) (jr mw.JSONResult, err error) { |
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63 |
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64 serviceName := mux.Vars(req)["service"] |
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65 fileName := mux.Vars(req)["file"] |
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66 |
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67 // The following check is currently most likely unnecessary as I wasn't |
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68 // able to inject a verbatim '/' via the middleware, but better be on |
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69 // the safe site... |
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70 if strings.Contains(fileName, "/") { |
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71 err = mw.JSONError{ |
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72 Code: http.StatusBadRequest, |
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73 Message: "error: no slashes allowed in file name", |
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74 } |
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75 return |
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76 } |
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77 |
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78 var path string |
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79 |
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80 switch serviceName { |
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81 case "apache2", "postgresql": |
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82 path = "/var/log/" + serviceName + "/" + fileName |
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83 default: |
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84 err = mw.JSONError{ |
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85 Code: http.StatusBadRequest, |
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86 Message: "error: invalid service: " + serviceName, |
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87 } |
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88 return |
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89 } |
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90 |
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91 var txt []byte |
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92 |
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93 if txt, err = ioutil.ReadFile(path); err != nil { |
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94 return |
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95 } |
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96 |
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97 jr = mw.JSONResult{ |
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98 Result: struct { |
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99 Path string `json:"path"` |
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100 Content string `json:"content"` |
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101 }{path, string(txt)}, |
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102 } |
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103 return |
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104 } |
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105 |
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106 func getSystemConfig(req *http.Request) (jr mw.JSONResult, err error) { |
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107 |
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108 cfg := config.PublishedConfig() |
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109 if cfg == "" { |
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110 jr = mw.JSONResult{Result: strings.NewReader("{}")} |
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111 return |
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112 } |
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113 |
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114 var data []byte |
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115 if data, err = ioutil.ReadFile(cfg); err != nil { |
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116 return |
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117 } |
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118 |
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119 jr = mw.JSONResult{Result: bytes.NewReader(data)} |
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120 return |
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121 } |
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122 |
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123 func getSystemSettings(req *http.Request) (jr mw.JSONResult, err error) { |
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124 |
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125 var rows *sql.Rows |
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126 if rows, err = mw.JSONConn(req).QueryContext(req.Context(), getSettingsSQL); err != nil { |
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127 return |
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128 } |
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129 defer rows.Close() |
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130 |
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131 settings := map[string]string{} |
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132 |
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133 for rows.Next() { |
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134 var key, val string |
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135 if err = rows.Scan(&key, &val); err != nil { |
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136 return |
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137 } |
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138 settings[key] = val |
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139 } |
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140 if err = rows.Err(); err != nil { |
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141 return |
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142 } |
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143 |
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144 jr = mw.JSONResult{Result: settings} |
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145 return |
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146 } |
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147 |
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148 type reconfFunc func(sql.NullString, string) (func(*http.Request), error) |
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149 |
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150 var ( |
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151 reconfigureFuncsMu sync.Mutex |
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152 reconfigureFuncs = map[string]reconfFunc{} |
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153 ) |
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154 |
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155 func registerReconfigureFunc(key string, fn reconfFunc) { |
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156 reconfigureFuncsMu.Lock() |
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157 defer reconfigureFuncsMu.Unlock() |
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158 reconfigureFuncs[key] = fn |
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159 } |
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160 |
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161 func reconfigureFunc(key string) reconfFunc { |
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162 reconfigureFuncsMu.Lock() |
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163 defer reconfigureFuncsMu.Unlock() |
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164 return reconfigureFuncs[key] |
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165 } |
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166 |
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167 var validColorRe = regexp.MustCompile(`#[[:xdigit:]]{6}`) |
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168 |
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169 func reconfigureWMSLayer( |
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170 old sql.NullString, curr, |
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171 which string, |
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172 ) (func(*http.Request), error) { |
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173 |
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174 if !validColorRe.MatchString(curr) { |
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175 return nil, fmt.Errorf("'%v' is not a valid color", curr) |
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176 } |
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177 |
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178 if !old.Valid || old.String != strings.ToLower(curr) { |
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179 return func(*http.Request) { geoserver.ReconfigureStyle(which) }, nil |
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180 } |
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181 |
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182 return nil, nil |
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183 } |
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184 |
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185 func reconfigureClassBreaks( |
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186 old sql.NullString, curr, |
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187 which string, |
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188 recalc func(*http.Request), |
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189 ) (func(*http.Request), error) { |
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190 |
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191 // If new values are broken, don't proceed. |
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192 currCVs, err := models.ParseColorValues(curr) |
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193 if err != nil { |
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194 return nil, err |
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195 } |
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196 |
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197 styles := strings.Split(which, ",") |
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198 |
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199 doBoth := func(req *http.Request) { |
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200 log.Infof("trigger re-calculation of %s.", which) |
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201 for _, style := range styles { |
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202 geoserver.ReconfigureStyle(style) |
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203 } |
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204 recalc(req) |
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205 } |
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206 |
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207 if !old.Valid { |
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208 return doBoth, nil |
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209 } |
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210 |
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211 oldCVs, err := models.ParseColorValues(old.String) |
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212 if err != nil { |
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213 log.Warnf("old config value is broken: %v\n", err) |
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214 return doBoth, nil |
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215 } |
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216 |
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217 if len(currCVs) != len(oldCVs) { |
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218 return doBoth, nil |
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219 } |
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220 |
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221 colorChanged := false |
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222 |
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223 for i := range currCVs { |
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224 if currCVs[i].Value != oldCVs[i].Value { |
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225 return doBoth, nil |
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226 } |
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227 if currCVs[i].Color != oldCVs[i].Color { |
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228 colorChanged = true |
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229 } |
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230 } |
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231 |
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232 // Only the color changed -> no expensive recalc needed. |
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233 if colorChanged { |
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234 log.Infof("only colors changed.") |
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235 return func(*http.Request) { |
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236 for _, style := range styles { |
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237 geoserver.ReconfigureStyle(style) |
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238 } |
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239 }, nil |
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240 } |
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241 |
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242 return nil, nil |
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243 } |
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244 |
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245 func init() { |
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246 registerReconfigureFunc("morphology_classbreaks", |
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247 func(old sql.NullString, curr string) (func(*http.Request), error) { |
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248 return reconfigureClassBreaks( |
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249 old, curr, |
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250 "sounding_results_areas_geoserver,sounding_results_marking_points_geoserver", |
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251 func(req *http.Request) { |
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252 if s, ok := auth.GetSession(req); ok { |
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253 triggerSoundingResultsContoursRecalc(s.User, curr) |
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254 } |
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255 }) |
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256 }) |
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257 registerReconfigureFunc("morphology_classbreaks_compare", |
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258 func(old sql.NullString, curr string) (func(*http.Request), error) { |
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259 return reconfigureClassBreaks( |
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260 old, curr, |
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261 "sounding_differences", |
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262 func(*http.Request) { go deleteSoundingDiffs() }) |
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263 }) |
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264 |
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265 reconf := func(which string) func(sql.NullString, string) (func(*http.Request), error) { |
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266 return func(old sql.NullString, curr string) (func(*http.Request), error) { |
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267 return reconfigureWMSLayer(old, curr, which) |
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268 } |
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269 } |
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270 |
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271 dm := reconf("distance_marks_geoserver") |
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272 registerReconfigureFunc("distance_marks_fill", dm) |
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273 registerReconfigureFunc("distance_marks_stroke", dm) |
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274 |
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275 dma := reconf("distance_marks_ashore_geoserver") |
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276 registerReconfigureFunc("distance_marks_ashore_fill", dma) |
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277 registerReconfigureFunc("distance_marks_ashore_stroke", dma) |
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278 |
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279 registerReconfigureFunc("waterway_area_stroke", reconf("waterway_area")) |
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280 registerReconfigureFunc("waterway_axis_stroke", reconf("waterway_axis")) |
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281 |
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282 // TODO: Add more layers. |
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283 } |
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284 |
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285 func triggerSoundingResultsContoursRecalc(who, breaks string) { |
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286 var serialized string |
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287 job := &imports.IsoRefresh{ClassBreaks: breaks} |
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288 serialized, err := common.ToJSONString(job) |
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289 if err != nil { |
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290 log.Errorf("%v\n", err) |
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291 return |
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292 } |
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293 var jobID int64 |
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294 if jobID, err = imports.AddJob( |
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295 imports.ISRJobKind, |
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296 time.Time{}, |
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297 nil, |
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298 nil, |
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299 who, |
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300 false, |
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301 serialized, |
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302 ); err != nil { |
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303 log.Errorf("%v\n", err) |
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304 return |
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305 } |
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306 log.Infof( |
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307 "recalculate sounding results contours in job %d.\n", |
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308 jobID) |
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309 |
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310 } |
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311 |
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312 func deleteSoundingDiffs() { |
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313 // TODO: Better do that in import queue? |
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314 ctx := context.Background() |
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315 |
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316 if err := auth.RunAs(ctx, "sys_admin", |
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317 func(conn *sql.Conn) error { |
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318 _, err := conn.ExecContext(ctx, deleteSoundingDiffsSQL) |
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319 return err |
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320 }, |
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321 ); err != nil { |
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322 log.Errorf("cleaning sounding diffs cache failed: %v\n", err) |
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323 } |
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324 } |
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325 |
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326 func setSystemSettings(req *http.Request) (jr mw.JSONResult, err error) { |
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327 |
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328 settings := mw.JSONInput(req).(*map[string]string) |
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329 |
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330 ctx := req.Context() |
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331 var tx *sql.Tx |
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332 if tx, err = mw.JSONConn(req).BeginTx(ctx, nil); err != nil { |
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333 return |
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334 } |
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335 defer tx.Rollback() |
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336 |
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337 var setStmt *sql.Stmt |
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338 if setStmt, err = tx.PrepareContext(ctx, updateSettingSQL); err != nil { |
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339 return |
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340 } |
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341 defer setStmt.Close() |
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342 var getStmt *sql.Stmt |
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343 if getStmt, err = tx.PrepareContext(ctx, getConfigSQL); err != nil { |
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344 return |
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345 } |
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346 defer getStmt.Close() |
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347 |
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348 reconfigure := map[string]func(*http.Request){} |
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349 |
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350 for key, value := range *settings { |
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351 var old sql.NullString |
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352 err = getStmt.QueryRowContext(ctx, key).Scan(&old) |
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353 switch { |
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354 case err == sql.ErrNoRows: |
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355 old.Valid, err = false, nil |
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356 case err != nil: |
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357 return |
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358 } |
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359 |
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360 if cmp := reconfigureFunc(key); cmp != nil { |
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361 var fn func(*http.Request) |
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362 if fn, err = cmp(old, value); err != nil { |
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363 return |
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364 } |
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365 if fn != nil { |
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366 reconfigure[key] = fn |
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367 } |
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368 } |
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369 |
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370 if _, err = setStmt.ExecContext(ctx, key, value); err != nil { |
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371 return |
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372 } |
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373 } |
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374 |
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375 if err = tx.Commit(); err != nil { |
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376 return |
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377 } |
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378 |
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379 for _, fn := range reconfigure { |
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380 fn(req) |
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381 } |
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382 |
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383 jr = mw.JSONResult{ |
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384 Code: http.StatusCreated, |
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385 Result: struct { |
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386 Result string `json:"result"` |
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387 }{"success"}, |
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388 } |
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389 return |
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390 } |