Mercurial > gemma

annotate config/config.go @ 408:ac23905e64b1

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Improve WFS proxy a lot. It now generates signed re-writings.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Wed, 15 Aug 2018 15:55:41 +0200
parents c6290776c65c
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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714787accd26 Fetch database connection string parts from configuration.
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1 package config
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3 import (
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4 "crypto/sha256"
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5 "fmt"
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6 "log"
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7 "sync"
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8
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9 homedir "github.com/mitchellh/go-homedir"
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10 "github.com/spf13/cobra"
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11 "github.com/spf13/viper"
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13 "gemma.intevation.de/gemma/common"
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14 )
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15
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16 // This is not part of the persistent config.
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17 var configFile string
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18
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19 func ConfigFile() string { return configFile }
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20
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21 func DBHost() string { return viper.GetString("dbhost") }
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22 func DBPort() uint { return uint(viper.GetInt32("dbport")) }
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23 func DBName() string { return viper.GetString("dbname") }
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24 func DBSSLMode() string { return viper.GetString("dbssl") }
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25 func SessionStore() string { return viper.GetString("sessions") }
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26 func Web() string { return viper.GetString("web") }
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27 func WebHost() string { return viper.GetString("host") }
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28 func WebPort() uint { return uint(viper.GetInt32("port")) }
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29
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30 func ServiceUser() string { return viper.GetString("service-user") }
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31 func ServicePassword() string { return viper.GetString("service-password") }
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32
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33 func SysAdmin() string { return viper.GetString("sys-admin") }
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34 func SysAdminPassword() string { return viper.GetString("sys-admin-password") }
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35
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36 func MailHost() string { return viper.GetString("mail-host") }
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37 func MailPort() uint { return uint(viper.GetInt32("mail-port")) }
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38 func MailUser() string { return viper.GetString("mail-user") }
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39 func MailPassword() string { return viper.GetString("mail-password") }
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40 func MailFrom() string { return viper.GetString("mail-from") }
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41 func MailHelo() string { return viper.GetString("mail-helo") }
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42
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43 func AllowedOrigins() []string { return viper.GetStringSlice("allowed-origins") }
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44
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45 func ExternalWFSs() map[string]interface{} { return viper.GetStringMap("external-wfs") }
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46
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47 func GeoServerURL() string { return viper.GetString("geoserver-url") }
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48 func GeoServerUser() string { return viper.GetString("geoserver-user") }
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49 func GeoServerPassword() string { return viper.GetString("geoserver-password") }
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50 func GeoServerTables() []string { return viper.GetStringSlice("geoserver-tables") }
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51
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52 var (
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53 proxyKeyOnce sync.Once
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54 proxyKey []byte
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56 proxyPrefixOnce sync.Once
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57 proxyPrefix string
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58 )
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60 func ProxyKey() []byte {
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61 fetchKey := func() {
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62 if proxyKey == nil {
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63 key := []byte(viper.GetString("proxy-key"))
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64 if len(key) == 0 {
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65 key = common.GenerateRandomKey(64)
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66 }
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67 hash := sha256.New()
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68 hash.Write(key)
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69 proxyKey = hash.Sum(nil)
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70 }
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71 }
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72 proxyKeyOnce.Do(fetchKey)
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73 return proxyKey
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74 }
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75
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76 func ProxyPrefix() string {
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77 fetchPrefix := func() {
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78 if proxyPrefix == "" {
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79 proxyPrefix = fmt.Sprintf("http://%s:%d", WebHost(), WebPort())
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80 }
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81 }
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82 proxyPrefixOnce.Do(fetchPrefix)
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83 return proxyPrefix
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84 }
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85
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86 var RootCmd = &cobra.Command{
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87 Use: "gemma",
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88 Short: "gemma is a server for waterway monitoring and management",
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89 }
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90
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91 var allowedOrigins = []string{
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92 // TODO: Fill me!
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93 }
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94
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95 var geoTables = []string{
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96 "fairway_dimensions",
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97 }
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98
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99 func init() {
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100 cobra.OnInitialize(initConfig)
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101 fl := RootCmd.PersistentFlags()
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102 fl.StringVarP(&configFile, "config", "c", "", "config file (default is $HOME/.gemma.toml)")
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103
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104 vbind := func(name string) { viper.BindPFlag(name, fl.Lookup(name)) }
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105
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106 str := func(name, value, usage string) {
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107 fl.String(name, value, usage)
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108 vbind(name)
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109 }
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110 strP := func(name, shorthand, value, usage string) {
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111 fl.StringP(name, shorthand, value, usage)
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112 vbind(name)
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113 }
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114 ui := func(name string, value uint, usage string) {
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115 fl.Uint(name, value, usage)
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116 vbind(name)
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117 }
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118 uiP := func(name, shorthand string, value uint, usage string) {
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119 fl.UintP(name, shorthand, value, usage)
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120 vbind(name)
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121 }
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122 strSl := func(name string, value []string, usage string) {
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123 fl.StringSlice(name, value, usage)
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124 vbind(name)
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125 }
332
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126
385
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127 strP("dbhost", "H", "localhost", "host of the database")
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128 uiP("dbport", "P", 5432, "port of the database")
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129 strP("dbname", "d", "gemma", "name of the database")
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130 strP("dbssl", "S", "prefer", "SSL mode of the database")
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131
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132 strP("sessions", "s", "", "path to the sessions file")
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133
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134 strP("web", "w", "./web", "path to the web files")
385
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135 strP("host", "o", "localhost", "host of the web app")
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136 uiP("port", "p", 8000, "port of the web app")
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137
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138 str("service-user", "postgres", "user to do service tasks")
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139 str("service-password", "", "password of user to do service tasks")
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140
386
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141 str("sys-admin", "postgres", "user to do admin tasks")
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142 str("sys-admin-password", "", "password of user to do admin tasks")
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143
385
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144 str("mail-host", "localhost", "server to send mail with")
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145 ui("mail-port", 465, "port of server to send mail with")
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146 str("mail-user", "gemma", "user to send mail with")
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147 str("mail-password", "", "password of user to send mail with")
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148 str("mail-from", "noreplay@localhost", "from line of mails")
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149 str("mail-helo", "localhost", "name of server to send mail from.")
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150
385
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151 strSl("allowed-origins", allowedOrigins, "allow access for remote origins")
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152
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153 str("geoserver-url", "http://localhost:8080/geoserver", "URL to GeoServer")
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154 str("geoserver-user", "admin", "GeoServer user")
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155 str("geoserver-password", "geoserver", "GeoServer password")
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156 strSl("geoserver-tables", geoTables, "tables to publish with GeoServer")
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157
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158 str("proxy-key", "", `signing key for proxy URLs. Defaults to random key.`)
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159 str("proxy-prefix", "", `URL prefix of proxy. Defaults to "http://${web-host}:${web-port}"`)
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160
332
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161 }
325
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162
332
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163 func initConfig() {
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164 // Don't forget to read config either from cfgFile or from home directory!
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165 if configFile != "" {
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166 // Use config file from the flag.
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167 viper.SetConfigFile(configFile)
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168 } else {
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169 // Find home directory.
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170 home, err := homedir.Dir()
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171 if err != nil {
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172 log.Fatalf("error: %v\n", err)
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173 }
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174
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175 // Search config in home directory with name ".cobra" (without extension).
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176 viper.AddConfigPath(home)
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177 viper.SetConfigName(".gemma")
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178 }
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179 if err := viper.ReadInConfig(); err != nil {
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180 if _, ok := err.(viper.ConfigFileNotFoundError); ok && configFile == "" {
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181 // Don't bother if not found.
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182 return
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183 }
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184 log.Fatalf("Can't read config: %v\n", err)
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185 }
28
714787accd26 Fetch database connection string parts from configuration.
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186 }