mirror of https://github.com/knative/client.git
90 lines
2.4 KiB
Go
90 lines
2.4 KiB
Go
// Copyright © 2018 The Knative Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package commands
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import (
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"fmt"
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"os"
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"path/filepath"
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homedir "github.com/mitchellh/go-homedir"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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)
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var cfgFile string
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var kubeCfgFile string
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// rootCmd represents the base command when called without any subcommands
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func NewKnCommand() *cobra.Command {
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rootCmd := &cobra.Command{
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Use: "kn",
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Short: "Knative client.",
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Long: `Manage your Knative building blokcs:
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Serving: Manage your services and release new software to them.
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Build: Create builds and keep track of their results.
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Eventing: Manage event subscriptions and channels. Connect up event sources.`,
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}
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rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.kn.yaml)")
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rootCmd.PersistentFlags().StringVar(&kubeCfgFile, "kubeconfig", "", "kubectl config file (default is $HOME/.kube/config)")
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rootCmd.AddCommand(NewServiceCommand())
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rootCmd.AddCommand(NewRevisionCommand())
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return rootCmd
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}
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func InitializeConfig() {
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cobra.OnInitialize(initConfig)
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cobra.OnInitialize(initKubeConfig)
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}
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func initKubeConfig() {
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if kubeCfgFile == "" {
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home, err := homedir.Dir()
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if err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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kubeCfgFile = filepath.Join(home, ".kube", "config")
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}
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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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// Find home directory.
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home, err := homedir.Dir()
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if err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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// Search config in home directory with name ".kn" (without extension).
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viper.AddConfigPath(home)
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viper.SetConfigName(".kn")
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}
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viper.AutomaticEnv() // read in environment variables that match
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// If a config file is found, read it in.
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if err := viper.ReadInConfig(); err == nil {
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fmt.Println("Using config file:", viper.ConfigFileUsed())
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}
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}
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