mirror of
https://github.com/adammck/terraform-inventory
synced 2024-05-11 13:46:20 +02:00
120 lines
2.8 KiB
Go
120 lines
2.8 KiB
Go
package main
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import (
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"bytes"
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"flag"
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"github.com/adammck/venv"
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"github.com/blang/vfs"
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)
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var version = flag.Bool("version", false, "print version information and exit")
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var list = flag.Bool("list", false, "list mode")
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var host = flag.String("host", "", "host mode")
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var inventory = flag.Bool("inventory", false, "inventory mode")
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func main() {
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flag.Parse()
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file := flag.Arg(0)
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if *version == true {
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fmt.Printf("%s version %s\n", os.Args[0], versionInfo())
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return
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}
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fs := vfs.OS()
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if file == "" {
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env := venv.OS()
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file = GetInputPath(fs, env)
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}
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if !*list && *host == "" && !*inventory {
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fmt.Fprint(os.Stderr, "Either --host or --list must be specified")
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os.Exit(1)
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}
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path, err := filepath.Abs(file)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Invalid file: %s\n", err)
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os.Exit(1)
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}
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f, err := fs.Stat(path)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Invalid file: %s\n", err)
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os.Exit(1)
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}
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var s stateAnyTerraformVersion
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if !f.IsDir() {
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stateFile, err := os.Open(path)
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defer stateFile.Close()
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error opening tfstate file: %s\n", err)
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os.Exit(1)
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}
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err = s.read(stateFile)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error reading tfstate file: %s\n", err)
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os.Exit(1)
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}
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}
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if f.IsDir() {
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cmd := exec.Command("terraform", "show", "-json")
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cmd.Dir = path
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var out bytes.Buffer
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cmd.Stdout = &out
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err = cmd.Run()
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error running `terraform show -json` in directory %s, %s, falling back to trying Terraform pre-0.12 command\n", path, err)
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cmd = exec.Command("terraform", "state", "pull")
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cmd.Dir = path
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out.Reset()
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cmd.Stdout = &out
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err = cmd.Run()
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error running `terraform state pull` in directory %s, %s\n", path, err)
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os.Exit(1)
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}
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}
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err = s.read(&out)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error reading Terraform state: %s\n", err)
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os.Exit(1)
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}
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}
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if s.TerraformVersion == TerraformVersionUnknown {
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fmt.Fprintf(os.Stderr, "Unknown state format\n\nUsage: %s [options] path\npath: this is either a path to a state file or a folder from which `terraform commands` are valid\n", os.Args[0])
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os.Exit(1)
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}
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if (s.TerraformVersion == TerraformVersionPre0dot12 && s.StatePre0dot12.Modules == nil) ||
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(s.TerraformVersion == TerraformVersion0dot12 && s.State0dot12.Values.RootModule == nil) {
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fmt.Fprintf(os.Stderr, "No modules found in state\n\nUsage: %s [options] path\npath: this is either a path to a state file or a folder from which `terraform commands` are valid\n", os.Args[0])
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os.Exit(1)
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}
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if *list {
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os.Exit(cmdList(os.Stdout, os.Stderr, &s))
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} else if *inventory {
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os.Exit(cmdInventory(os.Stdout, os.Stderr, &s))
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} else if *host != "" {
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os.Exit(cmdHost(os.Stdout, os.Stderr, &s, *host))
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}
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}
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