// Main represents the usual main method of the
// whole program. It is moved to its own package
// to testing using go utils.
func Main(args []string) error {
initializeFlagSet()
flags.Init("involucro "+version, flag.ContinueOnError)
if err := flags.Parse(args[1:]); err != nil {
return err
}
if showVersion {
fmt.Printf("involucro %s\n", versionNotice)
return nil
}
if relativeWorkDir == "." {
if val := os.Getenv("INVOLUCRO_WORKDIR"); val != "" {
relativeWorkDir = val
}
}
if remoteWrapTask != "" {
return runRemoteWrapTask()
}
ilog.StdLog.SetMinPrintLevel(-verbosity)
var client *docker.Client
var err error
if dockerURL != defaultDockerURL {
client, err = docker.NewClient(dockerURL)
} else {
client, err = docker.NewClientFromEnv()
}
if err != nil {
return fmt.Errorf("Unable to create Docker client: %s", err)
}
if err := client.Ping(); err != nil {
return fmt.Errorf("Docker not reachable: %s", err)
}
ctx := runtime.New(variables, client, relativeWorkDir)
if controlScript != "" && isControlFileOverriden() {
return fmt.Errorf("Specified both -e and -f")
}
runControlScriptOn(&ctx)
if showTasks {
showTasksOf(&ctx)
return nil
}
for _, element := range flags.Args() {
if err := ctx.RunTask(element); err != nil {
return err
}
}
return nil
}
func runRemoteWrapTask() error {
ilog.StdLog.SetMinPrintLevel(-2)
step := runtime.DecodeWrapStep(remoteWrapTask)
client, err := docker.NewClient("unix:///sock")
if err != nil {
return err
}
ctx := runtime.New(make(map[string]string), client, "/")
if err := step.Take(&ctx); err != nil {
return err
}
return nil
}