115 lines
3.2 KiB
Go
115 lines
3.2 KiB
Go
package main
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import (
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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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"versionedTerraform"
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)
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const (
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configFileLocation = "config"
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shortConfigDirString = "/.versionedTerraform"
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pwd = "."
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terraformPrefix = "/terraform_"
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)
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var needsStable = true
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func main() {
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homeDir, _ := os.UserHomeDir()
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configDirString := homeDir + shortConfigDirString
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// Create configuration directory if it does not exist
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_, err := os.Stat(configDirString)
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if os.IsNotExist(err) {
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err = versionedTerraform.CreateConfig(configDirString, configFileLocation)
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}
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// Create configuration file if it does not exist
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_, err = os.Stat(configDirString + "/" + configFileLocation)
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if os.IsNotExist(err) {
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err = versionedTerraform.CreateConfig(configDirString, configFileLocation)
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}
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// Let the user know if we couldn't create the config directory or file
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if err != nil {
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fmt.Printf("Unable to create config directory: %v", err)
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}
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configDir := os.DirFS(configDirString)
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workingDir := os.DirFS(pwd)
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var versionsFromConfig []versionedTerraform.SemVersion
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flag.Parse()
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args := flag.Args()
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//Load available versions from configuration file
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versionsFromConfig, err = versionedTerraform.LoadVersionsFromConfig(configDir, configFileLocation)
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if err != nil {
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fmt.Printf("Unable to read config: %v\n", err)
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os.Exit(1)
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}
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//Check if we need to update available versions with terraform's website
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//Then update configuration if we do
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//todo move this above loading the config
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needsUpdate, err := versionedTerraform.NeedToUpdateAvailableVersions(configDir, configFileLocation)
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if os.ErrNotExist == err {
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fmt.Printf("Unable to update version: %v\n", err)
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}
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if needsUpdate {
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fileHandle, _ := os.OpenFile(configDirString+"/"+configFileLocation, os.O_RDWR, 0666)
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defer fileHandle.Close()
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versionedTerraform.UpdateConfig(*fileHandle)
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}
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// Load a slice of versions which have already been installed
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installedVersions, err := versionedTerraform.LoadInstalledVersions(configDir)
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if err != nil {
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fmt.Printf("Unable to verify installed verisons: %v", err)
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os.Exit(1)
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}
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var vSlice []string
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for _, v := range versionsFromConfig {
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vSlice = append(vSlice, v.ToString())
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}
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// Check if stable version of terraform is required
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needsStable, err = versionedTerraform.ConfigRequiresStable(configDir, configFileLocation)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Unable to open config file, defaulting to stable versions of terraform only")
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}
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// Load version required from terraform directory
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ver, err := versionedTerraform.GetVersionFromFile(workingDir, vSlice, needsStable)
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if err != nil {
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fmt.Printf("Unable to retrieve terraform version from files: %v", err)
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}
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if !ver.Version.VersionInSlice(installedVersions) {
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fmt.Printf("Installing terraform version %s\n\n", ver.Version.ToString())
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err = ver.InstallTerraformVersion()
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if err != nil {
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fmt.Printf("Unable to install terraform version: %v", err)
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}
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}
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// Execute terraform
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terraformFile := configDirString + terraformPrefix + ver.VersionToString()
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argsForTerraform := append([]string{""}, args...)
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cmd := exec.Cmd{
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Path: terraformFile,
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Args: argsForTerraform,
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Env: os.Environ(),
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Dir: pwd,
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Stdin: os.Stdin,
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Stdout: os.Stdout,
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Stderr: os.Stderr,
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}
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cmd.Run()
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}
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