Rewrote generators to use plugin system with default plugins
This commit is contained in:
David Allen
parent
8036a5a8c0
commit
d77a31c7fe
15 changed files with 712 additions and 179 deletions
198
cmd/generate.go
198
cmd/generate.go
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@ -4,10 +4,11 @@
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package cmd
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import (
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"encoding/json"
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"fmt"
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"maps"
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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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@ -17,16 +18,52 @@ import (
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var (
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tokenFetchRetries int
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pluginPaths []string
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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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Short: "Generate a config file from state management",
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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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// load generator plugins to generate configs or to print
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var (
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generators = make(map[string]generator.Generator)
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client = configurator.SmdClient{
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Host: config.SmdClient.Host,
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Port: config.SmdClient.Port,
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AccessToken: config.AccessToken,
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}
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)
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for _, path := range pluginPaths {
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if verbose {
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fmt.Printf("loading plugins from '%s'\n", path)
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}
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gens, err := generator.LoadPlugins(path)
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if err != nil {
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fmt.Printf("failed to load plugins: %v\n", err)
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err = nil
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continue
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}
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// add loaded generator plugins to set
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maps.Copy(generators, gens)
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}
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// show config as JSON and generators if verbose
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if verbose {
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b, err := json.MarshalIndent(config, "", " ")
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if err != nil {
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fmt.Printf("failed to marshal config: %v\n", err)
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}
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fmt.Printf("%v\n", string(b))
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}
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// show available targets then exit
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if len(args) == 0 && len(targets) == 0 {
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for g := range generators {
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fmt.Printf("\tplugin: %s, name:\n", g)
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}
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os.Exit(0)
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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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@ -34,12 +71,14 @@ var generateCmd = &cobra.Command{
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// TODO: make request to check if request will need token
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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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accessToken := os.Getenv("ACCESS_TOKEN")
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if accessToken != "" {
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config.AccessToken = accessToken
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} else {
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// TODO: try and fetch token first if it is needed
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fmt.Printf("No token found. Attempting to generate config without one...\n")
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if verbose {
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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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}
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@ -58,82 +97,102 @@ var generateCmd = &cobra.Command{
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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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// 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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// 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[0])
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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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// var (
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// _type = tmp[0]
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// _template = tmp[1]
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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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// targetPath := ""
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// if len(tmp) > 2 {
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// targetPath = tmp[2]
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// }
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// run the generator plugin from target passed
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gen := generators[target]
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if gen == nil {
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fmt.Printf("invalid generator target (%s)\n", target)
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continue
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}
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output, err := gen.Generate(
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&config,
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generator.WithTemplate(gen.GetName()),
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generator.WithClient(client),
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)
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if err != nil {
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fmt.Printf("failed to generate config: %v\n", err)
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continue
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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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// ext := ""
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// contents := []byte{}
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// if _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 == "syslog" {
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} else if g.Type == "ansible" {
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// } else if g.Type == "ansible" {
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} else if g.Type == "warewulf" {
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// } else if g.Type == "warewulf" {
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}
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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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// if targetPath == "" {
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if outputPath == "" {
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// write only to stdout
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fmt.Printf("%s\n", string(output))
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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, output, 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), target, ".conf"), output, 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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@ -141,6 +200,7 @@ var generateCmd = &cobra.Command{
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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().StringSliceVar(&pluginPaths, "plugin", nil, "set the generator plugins directory path to shared libraries")
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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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@ -12,6 +12,7 @@ import (
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var (
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configPath string
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config configurator.Config
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verbose bool
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targets []string
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outputPath string
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)
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@ -36,7 +37,8 @@ func Execute() {
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func init() {
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cobra.OnInitialize(initConfig)
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rootCmd.PersistentFlags().StringVarP(&configPath, "config", "c", "", "set the config path")
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rootCmd.PersistentFlags().StringVarP(&configPath, "config", "c", "./config.yaml", "set the config path")
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rootCmd.PersistentFlags().BoolVarP(&verbose, "verbose", "v", false, "set to enable verbose output")
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}
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func initConfig() {
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