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|
package main
import (
"fmt"
"os"
"path/filepath"
"syscall"
"gitlab.com/gitlab-org/gitlab-shell/go/internal/config"
)
var (
binDir string
rootDir string
)
func init() {
binDir = filepath.Dir(os.Args[0])
rootDir = filepath.Dir(binDir)
}
func migrate(*config.Config) (int, bool) {
// TODO: Dispatch appropriate requests to Go handlers and return
// <exitstatus, true> depending on how they fare
return 0, false
}
// rubyExec will never return. It either replaces the current process with a
// Ruby interpreter, or outputs an error and kills the process.
func execRuby() {
rubyCmd := filepath.Join(binDir, "gitlab-shell-ruby")
execErr := syscall.Exec(rubyCmd, os.Args, os.Environ())
if execErr != nil {
fmt.Fprintf(os.Stderr, "Failed to exec(%q): %v\n", rubyCmd, execErr)
os.Exit(1)
}
}
func main() {
// Fall back to Ruby in case of problems reading the config, but issue a
// warning as this isn't something we can sustain indefinitely
config, err := config.NewFromDir(rootDir)
if err != nil {
fmt.Fprintln(os.Stderr, "Failed to read config, falling back to gitlab-shell-ruby")
execRuby()
}
// Try to handle the command with the Go implementation
if exitCode, done := migrate(config); done {
os.Exit(exitCode)
}
// Since a migration has not handled the command, fall back to Ruby to do so
execRuby()
}
|
