Mercurial > gemma
annotate pkg/config/config.go @ 2067:56deb027112a
client: translations: update source strings
author | Fadi Abbud <fadi.abbud@intevation.de> |
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date | Wed, 30 Jan 2019 10:49:23 +0100 |
parents | eadf84bb0e98 |
children | bd09d6ad4c14 |
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 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 // * Bernhard E. Reiter <bernhard.reiter@intevation.de> |
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14 |
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Fetch database connection string parts from configuration.
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15 package config |
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16 |
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17 import ( |
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18 "crypto/sha256" |
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19 "fmt" |
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20 "log" |
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21 "sync" |
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22 |
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23 homedir "github.com/mitchellh/go-homedir" |
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24 "github.com/spf13/cobra" |
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25 "github.com/spf13/viper" |
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26 |
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27 "gemma.intevation.de/gemma/pkg/common" |
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28 ) |
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29 |
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30 // This is not part of the persistent config. |
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31 var configFile string |
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32 |
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33 // DBHost is the hostname of the database. |
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34 func DBHost() string { return viper.GetString("db-host") } |
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35 |
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36 // DBPort is the port of the database. |
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37 func DBPort() uint { return uint(viper.GetInt32("db-port")) } |
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38 |
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39 // DBName is the name of the database. |
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40 func DBName() string { return viper.GetString("db-name") } |
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41 |
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42 // DBUser is the name of the user to connect to the database. |
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43 func DBUser() string { return viper.GetString("db-user") } |
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44 |
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45 // DBPassword is the password to connect to the database. |
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46 func DBPassword() string { return viper.GetString("db-password") } |
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47 |
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48 // DBSSLMode selects the SSL mode to encrypt the connection to the database. |
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49 func DBSSLMode() string { return viper.GetString("db-ssl") } |
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50 |
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51 // SessionStore is the path to the session store. |
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52 // If empty the session store is kept in memory only. |
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53 func SessionStore() string { return viper.GetString("sessions") } |
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54 |
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55 // Web is the root folder of the served web content. |
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56 func Web() string { return viper.GetString("web") } |
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57 |
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58 // WebHost is the host to bind the web server to. |
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59 func WebHost() string { return viper.GetString("host") } |
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60 |
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61 // WebPort is the port to bind the web server to. |
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62 func WebPort() uint { return uint(viper.GetInt32("port")) } |
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63 |
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64 // MailHost is the server of the SMTP server. |
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65 func MailHost() string { return viper.GetString("mail-host") } |
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66 |
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67 // MailPort is the port of the SMTP server. |
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68 func MailPort() uint { return uint(viper.GetInt32("mail-port")) } |
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69 |
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70 // MailUser is the user to connect to the SMTP server. |
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71 func MailUser() string { return viper.GetString("mail-user") } |
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72 |
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73 // MailPassword is the password of the user to connect to the SMTP server. |
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74 func MailPassword() string { return viper.GetString("mail-password") } |
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75 |
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76 // MailFrom is the sender in the 'from' header in mails send. |
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77 func MailFrom() string { return viper.GetString("mail-from") } |
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78 |
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79 // MailHelo is the helo message send to the SMTP server. |
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80 func MailHelo() string { return viper.GetString("mail-helo") } |
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81 |
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82 // AllowedOrigins is a list of allowed host for CORS headers. |
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83 func AllowedOrigins() []string { return viper.GetStringSlice("allowed-origins") } |
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84 |
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85 // GeoServerURL is the URL of the GeoServer used by gemma to serve map data. |
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86 func GeoServerURL() string { return viper.GetString("geoserver-url") } |
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87 |
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88 // GeoServerUser is the adminstrative user to connect to the GeoServer. |
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89 func GeoServerUser() string { return viper.GetString("geoserver-user") } |
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90 |
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91 // GeoServerPassword is the password of the adminstrative user |
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92 // to connect to the GeoServer. |
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93 func GeoServerPassword() string { return viper.GetString("geoserver-password") } |
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94 |
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95 // GeoServerClean is a flag to indicate that the GeoServer setup for |
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96 // gemma should be freshly created at boot time. |
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97 // This is useful in case of gemma update. |
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98 // If false the only missing parts are added to the GeoServer setup. |
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99 // This should be the default mode when running gemma after an update |
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100 // as it reduces the pressure on the GeoServer and enables faster |
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101 // rebooting. |
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102 func GeoServerClean() bool { return viper.GetBool("geoserver-clean") } |
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103 |
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104 // TmpDir is the path where to store temporary files. |
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105 // If left empty the system default for temporary files is used. |
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106 func TmpDir() string { return viper.GetString("tmp-dir") } |
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107 |
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108 var ( |
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109 proxyKeyOnce sync.Once |
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110 proxyKey []byte |
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111 proxyPrefixOnce sync.Once |
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112 proxyPrefix string |
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113 externalURLOnce sync.Once |
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114 externalURL string |
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115 ) |
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116 |
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117 // ProxyKey is a crytographic key to sign the URLs generated by the proxy. |
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118 // Use this to ensure that only known URLs are reachable over the proxy. |
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119 // If left blank a random key is generated a gemma boot time. |
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120 // Setting this value in the configuration will allow browsing proxy |
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121 // generated URL across gemma reboot. |
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122 // Use a strong secret key here (like pwgen -s 20). |
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123 func ProxyKey() []byte { |
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124 fetchKey := func() { |
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125 if proxyKey == nil { |
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126 key := []byte(viper.GetString("proxy-key")) |
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127 if len(key) == 0 { |
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128 key = common.GenerateRandomKey(64) |
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129 } |
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130 hash := sha256.New() |
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131 hash.Write(key) |
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132 proxyKey = hash.Sum(nil) |
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133 } |
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134 } |
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135 proxyKeyOnce.Do(fetchKey) |
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136 return proxyKey |
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137 } |
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138 |
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139 // ProxyPrefix is the prefix used in generated URLs by the proxy. |
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140 // It defauls to http://${WebHost}:${WebPort}". |
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141 // You may need to set this if you run gemma behind a proxy |
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142 // on a specific domain. |
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143 func ProxyPrefix() string { |
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144 fetchPrefix := func() { |
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145 if proxyPrefix == "" { |
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146 if proxyPrefix = viper.GetString("proxy-prefix"); proxyPrefix == "" { |
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147 proxyPrefix = fmt.Sprintf("http://%s:%d", WebHost(), WebPort()) |
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148 } |
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149 } |
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150 } |
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151 proxyPrefixOnce.Do(fetchPrefix) |
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152 return proxyPrefix |
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153 } |
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154 |
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155 // ExternalURL is the URL to find this server from the outside. |
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156 // It defauls to http://${WebHost}:${WebPort}". |
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157 func ExternalURL() string { |
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158 fetchExternal := func() { |
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159 if externalURL == "" { |
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160 if externalURL = viper.GetString("external-url"); externalURL == "" { |
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161 externalURL = fmt.Sprintf("http://%s:%d", WebHost(), WebPort()) |
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162 } |
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163 } |
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164 } |
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165 externalURLOnce.Do(fetchExternal) |
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166 return externalURL |
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167 } |
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168 |
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169 // RootCmd is cobra command to be bound th the cobra/viper infrastructure. |
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170 var RootCmd = &cobra.Command{ |
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171 Use: "gemma", |
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172 Short: "gemma is a server for waterway monitoring and management", |
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173 } |
119
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174 |
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175 var allowedOrigins = []string{ |
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176 // TODO: Fill me! |
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177 } |
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178 |
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179 func init() { |
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180 cobra.OnInitialize(initConfig) |
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181 fl := RootCmd.PersistentFlags() |
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182 fl.StringVarP(&configFile, "config", "c", "", "config file (default is $HOME/.gemma.toml)") |
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183 |
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184 vbind := func(name string) { viper.BindPFlag(name, fl.Lookup(name)) } |
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185 |
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186 str := func(name, value, usage string) { |
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187 fl.String(name, value, usage) |
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188 vbind(name) |
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189 } |
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190 strP := func(name, shorthand, value, usage string) { |
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191 fl.StringP(name, shorthand, value, usage) |
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192 vbind(name) |
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193 } |
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194 ui := func(name string, value uint, usage string) { |
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195 fl.Uint(name, value, usage) |
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196 vbind(name) |
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197 } |
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198 uiP := func(name, shorthand string, value uint, usage string) { |
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199 fl.UintP(name, shorthand, value, usage) |
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200 vbind(name) |
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201 } |
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202 strSl := func(name string, value []string, usage string) { |
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203 fl.StringSlice(name, value, usage) |
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204 vbind(name) |
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205 } |
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206 bl := func(name string, value bool, usage string) { |
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207 fl.Bool(name, value, usage) |
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208 vbind(name) |
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209 } |
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210 |
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211 strP("db-host", "H", "localhost", "host of the database") |
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212 uiP("db-port", "P", 5432, "port of the database") |
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213 strP("db-name", "d", "gemma", "name of the database") |
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214 str("db-user", "meta_login", "Metamorphic database user") |
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215 str("db-password", "", "Metamorphic database user password") |
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216 strP("db-ssl", "S", "prefer", "SSL mode of the database") |
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217 |
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218 strP("sessions", "s", "", "path to the sessions file") |
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219 |
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220 strP("web", "w", "./web", "path to the web files") |
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221 strP("host", "o", "localhost", "host of the web app") |
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222 uiP("port", "p", 8000, "port of the web app") |
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223 |
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224 str("mail-host", "localhost", "server to send mail with") |
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225 ui("mail-port", 465, "port of server to send mail with") |
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226 str("mail-user", "gemma", "user to authenticate against mail-host.\n"+ |
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227 "Leave empty for trying to send without auth.") |
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228 str("mail-password", "", "password of user to send mail with") |
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229 str("mail-from", "noreply@localhost", "from line of mails") |
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230 str("mail-helo", "localhost", "name of server to send mail from.") |
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231 |
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232 strSl("allowed-origins", allowedOrigins, "allow access for remote origins") |
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233 |
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234 str("geoserver-url", "http://localhost:8080/geoserver", "URL to GeoServer") |
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235 str("geoserver-user", "admin", "GeoServer user") |
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236 str("geoserver-password", "geoserver", "GeoServer password") |
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237 bl("geoserver-clean", false, "Clean GeoServer setup") |
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238 |
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239 str("proxy-key", "", "signing key for proxy URLs.\n"+ |
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240 "Defaults to random key.") |
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241 str("proxy-prefix", "", "URL prefix of proxy.\n"+ |
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242 "Defaults to 'http://${web-host}:${web-port}'") |
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243 |
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244 str("external-url", "", "URL to find the server from the outside.\n"+ |
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245 "Defaults to 'http://${web-host}:${web-port}'") |
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246 |
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247 str("tmp-dir", "", "Temp directory of gemma server.\n"+ |
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248 "Defaults to system temp directory.") |
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249 } |
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250 |
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251 var ( |
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252 configCond = sync.NewCond(new(sync.Mutex)) |
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253 configReady bool |
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254 ) |
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255 |
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256 // Ready tells if the configuration is ready to use.. |
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257 func Ready() { |
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258 configCond.L.Lock() |
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259 defer configCond.L.Unlock() |
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260 configReady = true |
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261 configCond.Broadcast() |
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262 } |
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263 |
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264 // WaitReady blocks until the configuration is ready to use. |
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265 // Call this if you have a go routine that needs configuration |
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266 // support. This guarantees that the initialization is done |
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267 // before accessing the configuration data. |
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268 func WaitReady() { |
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269 configCond.L.Lock() |
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270 defer configCond.L.Unlock() |
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271 for !configReady { |
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272 configCond.Wait() |
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273 } |
332
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274 } |
325
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Added CORS support.
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275 |
332
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276 func initConfig() { |
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277 // Don't forget to read config either from cfgFile or from home directory! |
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278 if configFile != "" { |
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279 // Use config file from the flag. |
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280 viper.SetConfigFile(configFile) |
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281 } else { |
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282 // Find home directory. |
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283 home, err := homedir.Dir() |
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284 if err != nil { |
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285 log.Fatalf("error: %v\n", err) |
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286 } |
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287 |
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288 // Search config in home directory with name ".cobra" (without extension). |
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289 viper.AddConfigPath(home) |
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290 viper.SetConfigName(".gemma") |
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291 } |
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292 if err := viper.ReadInConfig(); err != nil { |
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293 if _, ok := err.(viper.ConfigFileNotFoundError); ok && configFile == "" { |
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294 // Don't bother if not found. |
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295 return |
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296 } |
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297 log.Fatalf("Can't read config: %v\n", err) |
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298 } |
28
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Fetch database connection string parts from configuration.
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299 } |