mirror of https://github.com/k3s-io/k3s
139 lines
3.3 KiB
Go
139 lines
3.3 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package crictl
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import (
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"fmt"
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"io/ioutil"
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"os"
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gofilepath "path/filepath"
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"strconv"
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"github.com/sirupsen/logrus"
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"github.com/urfave/cli"
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"gopkg.in/yaml.v2"
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)
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// Config is the internal representation of the yaml that determines how
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// the app start
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type Config struct {
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RuntimeEndpoint string `yaml:"runtime-endpoint"`
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ImageEndpoint string `yaml:"image-endpoint"`
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Timeout int `yaml:"timeout"`
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Debug bool `yaml:"debug"`
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}
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// ReadConfig reads from a file with the given name and returns a config or
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// an error if the file was unable to be parsed.
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func ReadConfig(filepath string) (*Config, error) {
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data, err := ioutil.ReadFile(filepath)
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if err != nil {
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return nil, err
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}
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config := Config{}
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err = yaml.Unmarshal(data, &config)
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if err != nil {
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return nil, err
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}
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return &config, err
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}
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func writeConfig(c *Config, filepath string) error {
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data, err := yaml.Marshal(c)
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if err != nil {
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return err
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}
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if err := os.MkdirAll(gofilepath.Dir(filepath), 0755); err != nil {
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return err
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}
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return ioutil.WriteFile(filepath, data, 0644)
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}
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var configCommand = cli.Command{
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Name: "config",
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Usage: "Get and set crictl options",
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ArgsUsage: "[<options>]",
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SkipArgReorder: true,
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UseShortOptionHandling: true,
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Flags: []cli.Flag{
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cli.StringFlag{
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Name: "get",
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Usage: "get value: name",
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},
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},
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Action: func(context *cli.Context) error {
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configFile := context.GlobalString("config")
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if _, err := os.Stat(configFile); err != nil {
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if err := writeConfig(nil, configFile); err != nil {
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return err
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}
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}
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// Get config from file.
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config, err := ReadConfig(configFile)
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if err != nil {
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return fmt.Errorf("Failed to load config file: %v", err)
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}
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if context.IsSet("get") {
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get := context.String("get")
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switch get {
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case "runtime-endpoint":
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fmt.Println(config.RuntimeEndpoint)
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case "image-endpoint":
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fmt.Println(config.ImageEndpoint)
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case "timeout":
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fmt.Println(config.Timeout)
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case "debug":
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fmt.Println(config.Debug)
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default:
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logrus.Fatalf("No section named %s", get)
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}
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return nil
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}
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key := context.Args().First()
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if key == "" {
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return cli.ShowSubcommandHelp(context)
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}
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value := context.Args().Get(1)
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switch key {
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case "runtime-endpoint":
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config.RuntimeEndpoint = value
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case "image-endpoint":
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config.ImageEndpoint = value
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case "timeout":
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n, err := strconv.Atoi(value)
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if err != nil {
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logrus.Fatal(err)
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}
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config.Timeout = n
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case "debug":
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var debug bool
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if value == "true" {
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debug = true
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} else if value == "false" {
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debug = false
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} else {
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logrus.Fatal("use true|false for debug")
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}
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config.Debug = debug
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default:
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logrus.Fatalf("No section named %s", key)
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}
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return writeConfig(config, configFile)
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},
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}
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