Mercurial > gemma

annotate pkg/controllers/system.go @ 3854:3fcc4e11fc00

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Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Tue, 09 Jul 2019 11:31:49 +0200
parents d68c6be758b6
children 45be361f2d48
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1017
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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 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 "database/sql"
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19 "fmt"
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20 "io/ioutil"
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21 "log"
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22 "net/http"
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23 "strings"
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24 "sync"
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25
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26 "github.com/gorilla/mux"
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27
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28 "gemma.intevation.de/gemma/pkg/config"
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29 "gemma.intevation.de/gemma/pkg/geoserver"
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30 "gemma.intevation.de/gemma/pkg/models"
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31 )
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32
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33 const (
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34 getFeatureColourSQL = `SELECT r,g,b,a
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35 FROM systemconf.feature_colours
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36 WHERE feature_name = $1 AND style_attr = $2`
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37 setFeatureColourSQL = `UPDATE systemconf.feature_colours
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38 SET (r, g, b, a) = ($3, $4, $5, $6)
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39 WHERE feature_name = $1 AND style_attr = $2`
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40
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41 getSettingsSQL = `
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42 SELECT config_key, config_val
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43 FROM sys_admin.system_config`
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44
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45 getConfigSQL = `
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46 SELECT config_val
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47 FROM sys_admin.system_config
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48 WHERE config_key = $1`
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49
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50 updateSettingSQL = `
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51 INSERT INTO sys_admin.system_config (config_key, config_val)
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52 VALUES ($1, $2)
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53 ON CONFLICT (config_key) DO UPDATE SET config_val = $2`
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54 )
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55
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56 // System status end points
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57
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58 func showSystemLog(
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59 _ interface{}, req *http.Request,
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60 _ *sql.Conn,
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61 ) (jr JSONResult, err error) {
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62
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63 serviceName := mux.Vars(req)["service"]
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64 fileName := mux.Vars(req)["file"]
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65
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66 // The following check is currently most likely unnecessary as I wasn't
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67 // able to inject a verbatim '/' via the middleware, but better be on
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68 // the safe site...
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69 if strings.Contains(fileName, "/") {
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70 err = JSONError{http.StatusBadRequest,
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71 "error: no slashes allowed in file name"}
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72 return
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73 }
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74
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75 var path string
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76
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77 switch serviceName {
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78 case "apache2", "postgresql":
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79 path = "/var/log/" + serviceName + "/" + fileName
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80 default:
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81 err = JSONError{http.StatusBadRequest,
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82 "error: invalid service: " + serviceName}
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83 return
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84 }
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85
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86 var txt []byte
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87
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88 if txt, err = ioutil.ReadFile(path); err != nil {
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89 return
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90 }
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91
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92 jr = JSONResult{
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93 Result: struct {
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94 Path string `json:"path"`
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95 Content string `json:"content"`
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96 }{path, string(txt)},
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97 }
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98 return
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99 }
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100
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101 func getSystemConfig(
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102 _ interface{}, req *http.Request,
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103 _ *sql.Conn,
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104 ) (jr JSONResult, err error) {
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105
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106 cfg := config.PublishedConfig()
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107 if cfg == "" {
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108 jr = JSONResult{Result: strings.NewReader("{}")}
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109 return
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110 }
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111
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112 var data []byte
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113 if data, err = ioutil.ReadFile(cfg); err != nil {
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114 return
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115 }
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116
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117 jr = JSONResult{Result: bytes.NewReader(data)}
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118 return
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119 }
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120
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121 func getSystemSettings(
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122 _ interface{},
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123 req *http.Request,
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124 conn *sql.Conn,
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125 ) (jr JSONResult, err error) {
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126
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127 var rows *sql.Rows
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128 if rows, err = conn.QueryContext(req.Context(), getSettingsSQL); err != nil {
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129 return
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130 }
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131 defer rows.Close()
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132
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133 settings := map[string]string{}
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134
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135 for rows.Next() {
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136 var key, val string
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137 if err = rows.Scan(&key, &val); err != nil {
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138 return
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139 }
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140 settings[key] = val
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141 }
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142 if err = rows.Err(); err != nil {
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143 return
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144 }
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145
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146 jr = JSONResult{Result: settings}
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147 return
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148 }
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149
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150 type reconfFunc func(sql.NullString, string) (func(), error)
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151
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152 var (
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153 reconfigureFuncsMu sync.Mutex
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154 reconfigureFuncs = map[string]reconfFunc{}
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155 )
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156
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157 func registerReconfigureFunc(key string, fn reconfFunc) {
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158 reconfigureFuncsMu.Lock()
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159 defer reconfigureFuncsMu.Unlock()
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160 reconfigureFuncs[key] = fn
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161 }
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162
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163 func reconfigureFunc(key string) reconfFunc {
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164 reconfigureFuncsMu.Lock()
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165 defer reconfigureFuncsMu.Unlock()
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166 return reconfigureFuncs[key]
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167 }
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168
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169 func reconfigureClassBreaks(old sql.NullString, curr, which string, recalc func()) (func(), error) {
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170
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171 // If new values are broken, don't proceed.
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172 currCVs, err := models.ParseColorValues(curr)
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173 if err != nil {
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174 return nil, err
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175 }
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176
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177 doBoth := func() {
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178 log.Printf("info: Trigger re-calculation of %s.", which)
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179 geoserver.ReconfigureStyle(which)
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180 recalc()
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181 }
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182
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183 if !old.Valid {
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184 return doBoth, nil
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185 }
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186
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187 oldCVs, err := models.ParseColorValues(old.String)
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188 if err != nil {
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189 log.Printf("warn: old config value is broken: %v\n", err)
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190 return doBoth, nil
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191 }
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192
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193 if len(currCVs) != len(oldCVs) {
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194 return doBoth, nil
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195 }
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196
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197 colorChanged := false
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198
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199 for i := range currCVs {
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200 if currCVs[i].Value != oldCVs[i].Value {
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201 return doBoth, nil
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202 }
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203 if currCVs[i].Color != oldCVs[i].Color {
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204 colorChanged = true
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205 }
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206 }
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207
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208 // Only the color changed -> no expensive recalc needed.
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209 if colorChanged {
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210 log.Println("info: Only colors changed.")
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211 return func() { geoserver.ReconfigureStyle(which) }, nil
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212 }
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213
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214 return nil, nil
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215 }
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216
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diff changeset
217 func init() {
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218 registerReconfigureFunc("morphology_classbreaks",
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diff changeset
219 func(old sql.NullString, curr string) (func(), error) {
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220 return reconfigureClassBreaks(
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diff changeset
221 old, curr,
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diff changeset
222 "sounding_results_contour_lines_geoserver",
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223 func() {
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224 log.Println(
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225 "todo: Trigger expensive recalculation of sounding result contours.")
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226 })
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227 })
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diff changeset
228 registerReconfigureFunc("morphology_classbreaks_compare",
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diff changeset
229 func(old sql.NullString, curr string) (func(), error) {
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230 return reconfigureClassBreaks(
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diff changeset
231 old, curr,
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diff changeset
232 "sounding_differences",
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diff changeset
233 func() {
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diff changeset
234 log.Println(
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235 "todo: Trigger expensive recalculation of sounding differences contours.")
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diff changeset
236 })
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parents: 3834
diff changeset
237 })
3833
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238 }
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239
3625
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diff changeset
240 func setSystemSettings(
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diff changeset
241 input interface{},
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diff changeset
242 req *http.Request,
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diff changeset
243 conn *sql.Conn,
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parents: 3108
diff changeset
244 ) (jr JSONResult, err error) {
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245
3628
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diff changeset
246 settings := input.(*map[string]string)
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247
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248 ctx := req.Context()
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249 var tx *sql.Tx
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diff changeset
250 if tx, err = conn.BeginTx(ctx, nil); err != nil {
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diff changeset
251 return
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diff changeset
252 }
6693be57b7a2 Re-worked the Go part a little bit.
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diff changeset
253 defer tx.Rollback()
3625
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254
3628
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diff changeset
255 var setStmt *sql.Stmt
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diff changeset
256 if setStmt, err = tx.PrepareContext(ctx, updateSettingSQL); err != nil {
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diff changeset
257 return
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258 }
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diff changeset
259 defer setStmt.Close()
3834
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diff changeset
260 var getStmt *sql.Stmt
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diff changeset
261 if getStmt, err = tx.PrepareContext(ctx, getConfigSQL); err != nil {
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262 return
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263 }
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diff changeset
264 defer getStmt.Close()
3628
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265
3833
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266 reconfigure := map[string]func(){}
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267
3628
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diff changeset
268 for key, value := range *settings {
3834
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diff changeset
269 var old sql.NullString
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270 err = getStmt.QueryRowContext(ctx, key).Scan(&old)
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diff changeset
271 switch {
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diff changeset
272 case err == sql.ErrNoRows:
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diff changeset
273 old.Valid, err = false, nil
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diff changeset
274 case err != nil:
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275 return
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276 }
3833
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277
3854
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278 if cmp := reconfigureFunc(key); cmp != nil {
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
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279 var fn func()
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
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280 if fn, err = cmp(old, value); err != nil {
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
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parents: 3834
diff changeset
281 return
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parents: 3834
diff changeset
282 }
3fcc4e11fc00 Validate the config values of the morpho classes when saving. Also don't trigger the expensive re-calculation of the contour lines if only the colors changed.
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diff changeset
283 if fn != nil {
3834
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diff changeset
284 reconfigure[key] = fn
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diff changeset
285 }
3833
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diff changeset
286 }
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diff changeset
287
3630
2467e619cf67 Fixed more SQL typos.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 3629
diff changeset
288 if _, err = setStmt.ExecContext(ctx, key, value); err != nil {
3625
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diff changeset
289 return
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diff changeset
290 }
3628
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parents: 3625
diff changeset
291 }
6693be57b7a2 Re-worked the Go part a little bit.
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diff changeset
292
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parents: 3625
diff changeset
293 if err = tx.Commit(); err != nil {
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parents: 3625
diff changeset
294 return
6693be57b7a2 Re-worked the Go part a little bit.
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parents: 3625
diff changeset
295 }
3625
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diff changeset
296
3833
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diff changeset
297 for _, fn := range reconfigure {
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diff changeset
298 fn()
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diff changeset
299 }
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diff changeset
300
3625
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diff changeset
301 jr = JSONResult{
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diff changeset
302 Code: http.StatusCreated,
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parents: 3108
diff changeset
303 Result: struct {
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diff changeset
304 Result string `json:"result"`
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diff changeset
305 }{"success"},
a688a478e35f implemented configuration backend and frontend
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parents: 3108
diff changeset
306 }
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parents: 3108
diff changeset
307 return
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parents: 3108
diff changeset
308 }
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parents: 3108
diff changeset
309
840
0f61bfc21041 Added end point to get style (colour) information for feature.
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parents: 722
diff changeset
310 // Map/Feature style end points
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diff changeset
311
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
312 func getFeatureStyle(
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
313 _ interface{},
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
314 req *http.Request,
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
315 db *sql.Conn,
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
316 ) (jr JSONResult, err error) {
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
317
0f61bfc21041 Added end point to get style (colour) information for feature.
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parents: 722
diff changeset
318 feature := mux.Vars(req)["feature"]
0f61bfc21041 Added end point to get style (colour) information for feature.
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parents: 722
diff changeset
319 attr := mux.Vars(req)["attr"]
0f61bfc21041 Added end point to get style (colour) information for feature.
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parents: 722
diff changeset
320
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
321 c := models.Colour{}
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
322 err = db.QueryRowContext(
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
323 req.Context(),
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
324 getFeatureColourSQL,
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
325 feature, attr,
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
326 ).Scan(&c.R, &c.G, &c.B, &c.A)
0f61bfc21041 Added end point to get style (colour) information for feature.
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parents: 722
diff changeset
327
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
328 switch {
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
329 case err == sql.ErrNoRows:
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
330 err = JSONError{
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
331 Code: http.StatusNotFound,
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
332 Message: "Requestes style not found.",
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
333 }
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
334 return
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
335 case err != nil:
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
336 return
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
337 }
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
338
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
339 jr.Result = &struct {
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
340 Colour models.Colour `json:"colour"`
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
341 Code string `json:"code"`
0f61bfc21041 Added end point to get style (colour) information for feature.
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parents: 722
diff changeset
342 }{c, fmt.Sprintf("rgba(%d, %d, %d, %g)", c.R, c.G, c.B, c.A)}
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
343 return
0f61bfc21041 Added end point to get style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 722
diff changeset
344 }
846
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
345
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
346 func setFeatureStyle(
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
347 input interface{},
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
348 req *http.Request,
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
349 db *sql.Conn,
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
350 ) (jr JSONResult, err error) {
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
351
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
352 feature := mux.Vars(req)["feature"]
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
353 attr := mux.Vars(req)["attr"]
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
354
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
355 c := input.(*models.Colour)
854
83c271cb2344 Reverted fcb38cedc680 (More tightened color model.)
Sascha Wilde <wilde@intevation.de>
parents: 850
diff changeset
356 if !c.IsValid() {
83c271cb2344 Reverted fcb38cedc680 (More tightened color model.)
Sascha Wilde <wilde@intevation.de>
parents: 850
diff changeset
357 err = JSONError{http.StatusBadRequest, "error: invalid colours"}
83c271cb2344 Reverted fcb38cedc680 (More tightened color model.)
Sascha Wilde <wilde@intevation.de>
parents: 850
diff changeset
358 return
83c271cb2344 Reverted fcb38cedc680 (More tightened color model.)
Sascha Wilde <wilde@intevation.de>
parents: 850
diff changeset
359 }
846
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
360
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
361 var res sql.Result
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
362 res, err = db.ExecContext(
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
363 req.Context(),
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
364 setFeatureColourSQL,
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
365 feature, attr,
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
366 c.R, c.G, c.B, c.A)
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
367
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
368 if err != nil {
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
369 return
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
370 }
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
371
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
372 if n, err2 := res.RowsAffected(); err2 == nil && n == 0 {
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
373 err = JSONError{
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
374 Code: http.StatusNotFound,
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
375 Message: "Requestes style not found.",
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
376 }
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
377 return
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
378 }
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
379
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
380 jr = JSONResult{
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
381 Code: http.StatusCreated,
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
382 Result: struct {
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
383 Result string `json:"result"`
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
384 }{"success"},
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
385 }
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
386 return
6902032757e4 Added end point to set style (colour) information for feature.
Sascha Wilde <wilde@intevation.de>
parents: 840
diff changeset
387 }