// run the migrate command
func runMigrate(cmd *Command, args ...string) {
if len(args) < 2 {
cmd.DisplayUsageAndExit()
}
environName := args[0]
goVersion := args[1]
if os.Getenv("VENGO_ENV") == environName {
fmt.Println(
"error:", fmt.Sprintf("%s is currently in use as the active environment"))
fmt.Printf("%s: execute 'deactivate' before call this command\n", suggest)
os.Exit(2)
}
envPath := filepath.Join(os.Getenv("VENGO_HOME"), environName)
if _, err := os.Stat(envPath); err != nil {
fmt.Printf("%s is no a VenGO environment...\n", environName)
fmt.Println(err)
os.Exit(2)
}
fmt.Print("Checking installed Go versions...")
if !env.LookupInstalledVersion(goVersion) {
fmt.Println(utils.Fail("✖"))
fmt.Println(fmt.Sprintf(
"sorry vengo can't perform the operation because %s is %s",
goVersion, utils.Fail("not installed")))
fmt.Printf("%s: run 'vengo install %s'\n", suggest, goVersion)
os.Exit(2)
}
fmt.Println(utils.Ok("✔"))
library := filepath.Join(envPath, "lib")
installed, _ := os.Readlink(library)
if installed == goVersion {
fmt.Printf("%s in use Go version is already %s, skipping...", environName, installed)
os.Exit(0)
}
fmt.Printf("unlinking previous %s Go version from %s...", installed, environName)
if err := os.Remove(library); err != nil {
fmt.Println(utils.Fail("✖"))
fmt.Println(err)
os.Exit(2)
}
fmt.Println(utils.Ok("✔"))
fmt.Printf("Linking Go version %s...", goVersion)
path := filepath.Join(cache.CacheDirectory(), goVersion)
err := os.Symlink(path, filepath.Join(envPath, "lib"))
if err != nil {
fmt.Println(utils.Fail("✖"))
fmt.Println(err)
os.Exit(2)
}
fmt.Println(utils.Ok("✔"))
fmt.Println("Done. You may want to run 'go build -a ./... in $GOPATH")
os.Exit(0)
}
// check if the Go version used to generate the virtual environment is
// installed or not, if is not, return a NotIntalled error type
func (m *Mkenv) checkInstalled() error {
if !env.LookupInstalledVersion(m.Version) {
return ErrNotInstalled
}
return nil
}