146 lines
4 KiB
Go
146 lines
4 KiB
Go
//go:build client || all
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// +build client all
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package cmd
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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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"strings"
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configurator "github.com/OpenCHAMI/configurator/internal"
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"github.com/OpenCHAMI/configurator/internal/generator"
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"github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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)
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var (
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tokenFetchRetries int
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)
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var generateCmd = &cobra.Command{
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Use: "generate",
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Short: "Generate a config file from system state",
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Run: func(cmd *cobra.Command, args []string) {
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client := configurator.SmdClient{
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Host: config.SmdHost,
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Port: config.SmdPort,
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AccessToken: config.AccessToken,
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}
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// make sure that we have a token present before trying to make request
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if config.AccessToken == "" {
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// check if OCHAMI_ACCESS_TOKEN env var is set if no access token is provided and use that instead
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accessToken := os.Getenv("OCHAMI_ACCESS_TOKEN")
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if accessToken != "" {
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config.AccessToken = accessToken
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} else {
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fmt.Printf("No token found. Attempting to generate config without one...\n")
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}
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}
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if targets == nil {
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logrus.Errorf("no target supplied (--target type:template)")
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} else {
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// if we have more than one target and output is set, create configs in directory
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targetCount := len(targets)
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if outputPath != "" && targetCount > 1 {
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err := os.MkdirAll(outputPath, 0o755)
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if err != nil {
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logrus.Errorf("failed to make output directory: %v", err)
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return
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}
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}
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for _, target := range targets {
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// split the target and type
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tmp := strings.Split(target, ":")
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// make sure each target has at least two args
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if len(tmp) < 2 {
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message := "target"
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if len(tmp) == 1 {
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message += fmt.Sprintf(" '%s'", tmp[1])
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}
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message += " does not provide enough arguments (args: \"type:template\")"
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logrus.Errorf(message)
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continue
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}
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g := generator.Generator{
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Type: tmp[0],
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Template: tmp[1],
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}
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// check if another param is specified
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targetPath := ""
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if len(tmp) > 2 {
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targetPath = tmp[2]
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}
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// NOTE: we probably don't want to hardcode the types, but should do for now
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ext := ""
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contents := []byte{}
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if g.Type == "dhcp" {
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// fetch eths from SMD
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eths, err := client.FetchEthernetInterfaces()
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if err != nil {
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logrus.Errorf("failed to fetch DHCP metadata: %v\n", err)
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continue
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}
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if len(eths) <= 0 {
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continue
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}
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// generate a new config from that data
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contents, err = g.GenerateDHCP(&config, eths)
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if err != nil {
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logrus.Errorf("failed to generate DHCP config file: %v\n", err)
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continue
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}
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ext = "conf"
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} else if g.Type == "dns" {
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// TODO: fetch from SMD
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// TODO: generate config from pulled info
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} else if g.Type == "syslog" {
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} else if g.Type == "ansible" {
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} else if g.Type == "warewulf" {
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}
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// write config output if no specific targetPath is set
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if targetPath == "" {
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if outputPath == "" {
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// write only to stdout
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fmt.Printf("%s\n", "")
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} else if outputPath != "" && targetCount == 1 {
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// write just a single file using template name
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err := os.WriteFile(outputPath, contents, 0o644)
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if err != nil {
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logrus.Errorf("failed to write config to file: %v", err)
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continue
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}
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} else if outputPath != "" && targetCount > 1 {
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// write multiple files in directory using template name
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err := os.WriteFile(fmt.Sprintf("%s/%s.%s", filepath.Clean(outputPath), g.Template, ext), contents, 0o644)
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if err != nil {
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logrus.Errorf("failed to write config to file: %v", err)
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continue
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}
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}
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}
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} // for targets
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}
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},
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}
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func init() {
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generateCmd.Flags().StringSliceVar(&targets, "target", nil, "set the target configs to make")
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generateCmd.Flags().StringVarP(&outputPath, "output", "o", "", "set the output path for config targets")
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generateCmd.Flags().IntVar(&tokenFetchRetries, "fetch-retries", 5, "set the number of retries to fetch an access token")
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rootCmd.AddCommand(generateCmd)
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}
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