71 lines
1.6 KiB
Go
71 lines
1.6 KiB
Go
package options
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import (
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"fmt"
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"io"
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"strings"
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flag "github.com/spf13/pflag"
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"github.com/spf13/viper"
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)
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// Options contains configuration options for the OAuth2 Proxy
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type Options struct {
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Cookie *CookieOptions
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}
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// New creates a new deafulted copy of the Options struct
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func New() *Options {
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options := &Options{}
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err := defaultStruct(options)
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if err != nil {
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// If we get an error here, there must be a code error
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panic(err)
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}
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return options
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}
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// Load reads a config file, flag arguments and the environment to set the
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// correct configuration options
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func Load(config io.Reader, configType string, args []string) (*Options, error) {
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flagSet := flag.NewFlagSet("oauth2-proxy", flag.ExitOnError)
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// Add FlagSets to main flagSet
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flagSet.AddFlagSet(cookieFlagSet)
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flagSet.Parse(args)
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// Create a viper for binding config
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v := viper.New()
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// Bind flags to viper
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err := v.BindPFlags(flagSet)
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if err != nil {
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return nil, err
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}
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// Configure loading of environment variables
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// All flag options are prefixed by the EnvPrefix
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v.SetEnvPrefix("OAUTH2_PROXY_")
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// Substitute "-" for "_" so `FOO_BAR` matches the flag `foo-bar`
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v.SetEnvKeyReplacer(strings.NewReplacer("-", "_"))
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v.AutomaticEnv()
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// Read the configuration file
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if config != nil {
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if configType == "" {
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return nil, fmt.Errorf("config-type not set")
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}
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v.SetConfigType(configType)
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v.ReadConfig(config)
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}
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// Unmarhsal the config into the Options struct
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options := New()
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err = v.Unmarshal(&options)
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if err != nil {
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return nil, fmt.Errorf("error unmarshalling config: %v", err)
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}
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return options, nil
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}
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