Max Schmitt
8 years ago
15 changed files with 145 additions and 95 deletions
@ -1,8 +1,14 @@ |
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listen_addr: ':8080' # Consists of 'IP:Port', e.g. ':8080' listens on any IP and on Port 8080 |
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base_url: 'http://localhost:3000' # Origin URL, required for the authentication via OAuth |
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data_dir: ./data # Contains: the database and the private key |
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enable_debug_mode: true # Activates more detailed logging |
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shorted_id_length: 4 # Length of the random generated ID which is used for new shortened URLs |
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ListenAddr: ':8080' # Consists of 'IP:Port', e.g. ':8080' listens on any IP and on Port 8080 |
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BaseURL: 'http://localhost:3000' # Origin URL, required for the authentication via OAuth |
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DataDir: ./data # Contains: the database and the private key |
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EnableDebugMode: true # Activates more detailed logging |
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ShortedIDLength: 10 # Length of the random generated ID which is used for new shortened URLs |
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Google: |
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ClientID: replace me # ClientID which you get from console.cloud.google.com |
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ClientSecret: replace me # ClientSecret which get from console.cloud.google.com |
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ClientID: replace me |
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ClientSecret: replace me |
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GitHub: |
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ClientID: replace me |
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ClientSecret: replace me |
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Microsoft: |
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ClientID: replace me |
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ClientSecret: 'replace me' |
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|
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@ -1,71 +1,119 @@ |
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package util |
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|
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import ( |
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"io/ioutil" |
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"os" |
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"path/filepath" |
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"strings" |
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"reflect" |
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"strconv" |
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|
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"github.com/sirupsen/logrus" |
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|
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"github.com/pkg/errors" |
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"github.com/spf13/viper" |
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"gopkg.in/yaml.v2" |
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) |
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type Configuration struct { |
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ListenAddr string `yaml:"ListenAddr" env:"LISTEN_ADDR"` |
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BaseURL string `yaml:"BaseURL" env:"BASE_URL"` |
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DataDir string `yaml:"DataDir" env:"DATA_DIR"` |
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EnableDebugMode bool `yaml:"EnableDebugMode" env:"ENABLE_DEBUG_MODE"` |
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ShortedIDLength int `yaml:"ShortedIDLength" env:"SHORTED_ID_LENGTH"` |
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Google oAuthConf `yaml:"Google" env:"GOOGLE"` |
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GitHub oAuthConf `yaml:"GitHub" env:"GITHUB"` |
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Microsoft oAuthConf `yaml:"Microsoft" env:"MICROSOFT"` |
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} |
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|
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type oAuthConf struct { |
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ClientID string `yaml:"ClientID" env:"CLIENT_ID"` |
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ClientSecret string `yaml:"ClientSecret" env:"CLIENT_SECRET"` |
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} |
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|
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var ( |
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dataDirPath string |
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// DoNotSetConfigName is used to predefine if the name of the config should be set.
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// Used for unit testing
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DoNotSetConfigName = false |
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config = Configuration{ |
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ListenAddr: ":8080", |
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BaseURL: "http://localhost:3000", |
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DataDir: "data", |
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EnableDebugMode: false, |
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ShortedIDLength: 4, |
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} |
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) |
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|
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// ReadInConfig loads the configuration and other needed folders for further usage
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// ReadInConfig loads the Configuration and other needed folders for further usage
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func ReadInConfig() error { |
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viper.AutomaticEnv() |
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viper.SetEnvPrefix("gus") |
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viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_")) |
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if !DoNotSetConfigName { |
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viper.SetConfigName("config") |
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} |
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viper.AddConfigPath(".") |
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setConfigDefaults() |
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switch err := viper.ReadInConfig(); err.(type) { |
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case viper.ConfigFileNotFoundError: |
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logrus.Info("No configuration file found, using defaults and environment overrides.") |
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break |
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case nil: |
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break |
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default: |
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file, err := ioutil.ReadFile("config.yaml") |
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if err == nil { |
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if err := yaml.Unmarshal(file, &config); err != nil { |
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return errors.Wrap(err, "could not unmarshal yaml file") |
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} |
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} else if !os.IsNotExist(err) { |
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return errors.Wrap(err, "could not read config file") |
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} |
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return checkForDatadir() |
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if err := config.ApplyEnvironmentConfig(); err != nil { |
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return errors.Wrap(err, "could not apply environment configuration") |
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} |
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// setConfigDefaults sets the default values for the configuration
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func setConfigDefaults() { |
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viper.SetDefault("listen_addr", ":8080") |
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viper.SetDefault("base_url", "http://localhost:3000") |
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viper.SetDefault("data_dir", "data") |
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viper.SetDefault("enable_debug_mode", true) |
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viper.SetDefault("shorted_id_length", 4) |
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config.DataDir, err = filepath.Abs(config.DataDir) |
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if err != nil { |
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return errors.Wrap(err, "could not get relative data dir path") |
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} |
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if _, err = os.Stat(config.DataDir); os.IsNotExist(err) { |
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if err = os.MkdirAll(config.DataDir, 0755); err != nil { |
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return errors.Wrap(err, "could not create config directory") |
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} |
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} |
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return nil |
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} |
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// GetDataDir returns the absolute path of the data directory
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func GetDataDir() string { |
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return dataDirPath |
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func (c *Configuration) ApplyEnvironmentConfig() error { |
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return c.setDefaultValue(reflect.ValueOf(c), reflect.TypeOf(*c), reflect.StructField{}, "GUS") |
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} |
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// checkForDatadir checks for the data dir and creates it if it not exists
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func checkForDatadir() error { |
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var err error |
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dataDirPath, err = filepath.Abs(viper.GetString("data_dir")) |
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func (c *Configuration) setDefaultValue(v reflect.Value, t reflect.Type, f reflect.StructField, prefix string) error { |
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if v.Kind() != reflect.Ptr { |
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return errors.New("Not a pointer value") |
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} |
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v = reflect.Indirect(v) |
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fieldEnv, exists := f.Tag.Lookup("env") |
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env := os.Getenv(prefix + fieldEnv) |
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if exists && env != "" { |
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switch v.Kind() { |
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case reflect.Int: |
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envI, err := strconv.Atoi(env) |
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if err != nil { |
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return errors.Wrap(err, "could not get relative data dir path") |
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logrus.Warningf("could not parse to int: %v", err) |
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break |
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} |
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v.SetInt(int64(envI)) |
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case reflect.String: |
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v.SetString(env) |
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case reflect.Bool: |
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envB, err := strconv.ParseBool(env) |
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if err != nil { |
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logrus.Warningf("could not parse to bool: %v", err) |
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break |
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} |
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v.SetBool(envB) |
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} |
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} |
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if v.Kind() == reflect.Struct { |
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// Iterate over the struct fields
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for i := 0; i < v.NumField(); i++ { |
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if err := c.setDefaultValue(v.Field(i).Addr(), t, t.Field(i), prefix+fieldEnv+"_"); err != nil { |
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return err |
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} |
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if _, err = os.Stat(dataDirPath); os.IsNotExist(err) { |
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if err = os.MkdirAll(dataDirPath, 0755); err != nil { |
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return errors.Wrap(err, "could not create config directory") |
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} |
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} |
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return nil |
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} |
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func (o oAuthConf) Enabled() bool { |
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return o.ClientSecret != "" |
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} |
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func GetConfig() Configuration { |
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return config |
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} |
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func SetConfig(c Configuration) { |
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config = c |
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} |
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|
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