/
root.go
143 lines (125 loc) · 4.9 KB
/
root.go
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// Copyright 2020 Fugue, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"fmt"
"os"
"strings"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
// rootCmd represents the base command when called without any subcommands
var rootCmd = &cobra.Command{
Use: "zim",
Short: "The caching build tool",
Version: fmt.Sprintf("%s, build %s", Version, GitCommit),
}
// 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() {
if err := rootCmd.Execute(); err != nil {
fatal(err)
}
}
func init() {
cobra.OnInitialize(initConfig)
// Flags available to all subcommands
rootCmd.PersistentFlags().StringP("url", "u", "", "Zim API URL")
rootCmd.PersistentFlags().StringP("dir", "d", ".", "Working directory")
rootCmd.PersistentFlags().String("region", "us-east-2", "AWS region")
rootCmd.PersistentFlags().Bool("docker", true, "Use Docker when running rules")
rootCmd.PersistentFlags().Bool("debug", false, "Enable debug logging")
rootCmd.PersistentFlags().StringSliceP("kinds", "k", nil, "Select kinds of components to operate on")
rootCmd.PersistentFlags().StringSliceP("components", "c", nil, "Select components to operate on by name")
rootCmd.PersistentFlags().StringSliceP("rules", "r", nil, "Rules to run against components")
rootCmd.PersistentFlags().String("cache", "read-write", "Cache mode (read-write | write-only | disabled)")
rootCmd.PersistentFlags().String("output", "buffered", "Output mode (buffered | unbuffered)")
rootCmd.PersistentFlags().String("platform", "", "Docker target platform (linux/amd64, linux/arm64, ...)")
// Bind flags to environment variables if they are present
viper.BindPFlag("url", rootCmd.PersistentFlags().Lookup("url"))
viper.BindPFlag("dir", rootCmd.PersistentFlags().Lookup("dir"))
viper.BindPFlag("region", rootCmd.PersistentFlags().Lookup("region"))
viper.BindPFlag("docker", rootCmd.PersistentFlags().Lookup("docker"))
viper.BindPFlag("debug", rootCmd.PersistentFlags().Lookup("debug"))
viper.BindPFlag("kinds", rootCmd.PersistentFlags().Lookup("kinds"))
viper.BindPFlag("components", rootCmd.PersistentFlags().Lookup("components"))
viper.BindPFlag("rules", rootCmd.PersistentFlags().Lookup("rules"))
viper.BindPFlag("cache", rootCmd.PersistentFlags().Lookup("cache"))
viper.BindPFlag("output", rootCmd.PersistentFlags().Lookup("output"))
viper.BindPFlag("platform", rootCmd.PersistentFlags().Lookup("platform"))
// Flag completions
rootCmd.RegisterFlagCompletionFunc("components", func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
opts, err := getZimOptions(cmd, args)
if err != nil {
fatal(err)
}
proj, err := getProject(opts.Directory)
if err != nil {
fatal(err)
}
comps, err := proj.Select([]string{}, []string{})
if err != nil {
fatal(err)
}
if len(opts.Rules) > 0 {
comps = comps.WithRule(opts.Rules...)
}
return comps.FilterNames(opts.Components), cobra.ShellCompDirectiveDefault
})
rootCmd.RegisterFlagCompletionFunc("kinds", func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
opts, err := getZimOptions(cmd, args)
if err != nil {
fatal(err)
}
proj, err := getProject(opts.Directory)
if err != nil {
fatal(err)
}
comps, err := proj.Select([]string{}, []string{})
if err != nil {
fatal(err)
}
return comps.FilterKinds(opts.Kinds), cobra.ShellCompDirectiveDefault
})
rootCmd.RegisterFlagCompletionFunc("rules", func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
opts, err := getZimOptions(cmd, args)
if err != nil {
fatal(err)
}
proj, err := getProject(opts.Directory)
if err != nil {
fatal(err)
}
comps, err := proj.Select(opts.Components, []string{})
if err != nil {
fatal(err)
}
return comps.FilterRules(opts.Rules), cobra.ShellCompDirectiveDefault
})
}
// initConfig reads in config file and ENV variables if set.
func initConfig() {
// Environment variables will be prefixed with "ZIM_"
viper.SetEnvPrefix("zim")
home, err := os.UserHomeDir()
if err != nil {
fatal(err)
}
// Search config in home directory with name ".zim" (without extension)
viper.AddConfigPath(home)
viper.SetConfigName(".zim")
viper.AutomaticEnv()
viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_"))
viper.ReadInConfig()
}