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root.go
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root.go
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package cmd
import (
"fmt"
"os"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var cfgFile string
// rootCmd represents the base command when called without any subcommands
var rootCmd = &cobra.Command{
Use: "gardener-chart-releaser",
Short: "Collects and releases helm charts needed for Gardener provisioning",
Long: `Gardener and its extensions are spread over multiple git repositories,
all containing helm charts on their own. This program collects these charts from
several sources (see sources in config.yaml) and releases them in a destination
github repository. The destination repository also serves as helm repository via
github pages.`,
}
// Execute adds all child commands to the root command and sets flags appropriately.
// This is called by main.main(). It only needs to happen once to the rootCmd.
func Execute() {
err := rootCmd.Execute()
if err != nil {
os.Exit(1)
}
}
func init() {
cobra.OnInitialize(initConfig)
rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "config.yaml", "config file")
rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
}
// initConfig reads in config file and ENV variables if set.
func initConfig() {
if cfgFile != "" {
// Use config file from the flag.
viper.SetConfigFile(cfgFile)
} else {
// Find home directory.
home, err := os.UserHomeDir()
cobra.CheckErr(err)
// Search config in home directory with name ".gardener-chart-releaser" (without extension).
viper.AddConfigPath(home)
viper.SetConfigType("yaml")
viper.SetConfigName(".gardener-chart-releaser")
}
viper.AutomaticEnv() // read in environment variables that match
// If a config file is found, read it in.
if err := viper.ReadInConfig(); err == nil {
fmt.Fprintln(os.Stderr, "Using config file:", viper.ConfigFileUsed())
}
}