99 lines
2.5 KiB
Go
99 lines
2.5 KiB
Go
package cmd
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import (
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"fmt"
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"os"
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"strings"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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"go.infratographer.com/x/loggingx"
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"go.infratographer.com/x/otelx"
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"go.infratographer.com/x/versionx"
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"go.infratographer.com/x/viperx"
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"go.uber.org/zap"
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"go.equinixmetal.net/infra9-metal-bridge/internal/config"
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)
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const appName = "infra9-metal-bridge"
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var (
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cfgFile string
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logger *zap.SugaredLogger
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)
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// rootCmd represents the base command when called without any subcommands
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var rootCmd = &cobra.Command{
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Use: "infra9-metal-bridge",
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Short: "Bridges Metal to Infratographer services",
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}
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// Execute adds all child commands to the root command and sets flags appropriately.
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// This is called by main.main(). It only needs to happen once to the rootCmd.
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func Execute() {
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err := rootCmd.Execute()
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if err != nil {
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os.Exit(1)
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}
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}
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func init() {
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cobra.OnInitialize(initConfig)
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rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is /etc/infratographer/infra9-metal-bridge.yaml)")
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viperx.MustBindFlag(viper.GetViper(), "config", rootCmd.PersistentFlags().Lookup("config"))
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// Logging flags
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loggingx.MustViperFlags(viper.GetViper(), rootCmd.PersistentFlags())
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// Register version command
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versionx.RegisterCobraCommand(rootCmd, func() { versionx.PrintVersion(logger) })
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// OTEL Flags
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otelx.MustViperFlags(viper.GetViper(), rootCmd.Flags())
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}
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// initConfig reads in config file and ENV variables if set.
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func initConfig() {
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if cfgFile != "" {
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// Use config file from the flag.
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viper.SetConfigFile(cfgFile)
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} else {
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viper.AddConfigPath("/etc/infratographer/")
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viper.SetConfigType("yaml")
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viper.SetConfigName("infra9-metal-bridge")
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}
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viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_", "-", "_"))
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viper.SetEnvPrefix("infra9metalbridge")
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viper.AutomaticEnv() // read in environment variables that match
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setupAppConfig()
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// setupLogging()
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logger = loggingx.InitLogger(appName, config.AppConfig.Logging)
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// If a config file is found, read it in.
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err := viper.ReadInConfig()
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if err == nil {
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logger.Infow("using config file",
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"file", viper.ConfigFileUsed(),
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)
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}
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setupAppConfig()
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}
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// setupAppConfig loads our config.AppConfig struct with the values bound by
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// viper. Then, anywhere we need these values, we can just return to AppConfig
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// instead of performing viper.GetString(...), viper.GetBool(...), etc.
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func setupAppConfig() {
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err := viper.Unmarshal(&config.AppConfig)
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if err != nil {
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fmt.Printf("unable to decode app config: %s", err)
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os.Exit(1)
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}
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}
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