Fix a pep8 error
[snf-image-creator] / image_creator / dialog_main.py
index 9b0c56b..52d63cb 100644 (file)
@@ -38,276 +38,189 @@ import sys
 import os
 import textwrap
 import signal
+import optparse
 
 from image_creator import __version__ as version
-from image_creator.util import FatalError, MD5
-from image_creator.output.dialog import InitializationOutput
+from image_creator.util import FatalError
+from image_creator.output import Output
+from image_creator.output.cli import SimpleOutput
+from image_creator.output.dialog import GaugeOutput
+from image_creator.output.composite import CompositeOutput
 from image_creator.disk import Disk
 from image_creator.os_type import os_cls
+from image_creator.dialog_wizard import wizard
+from image_creator.dialog_menu import main_menu
+from image_creator.dialog_util import SMALL_WIDTH, WIDTH, confirm_exit, \
+    Reset, update_background_title
 
-MSGBOX_WIDTH = 60
-YESNO_WIDTH = 50
-MENU_WIDTH = 70
 
+def image_creator(d, media, out):
 
-class Reset(Exception):
-    pass
-
-
-def confirm_exit(d, msg=''):
-    return not d.yesno("%s Do you want to exit?" % msg, width=YESNO_WIDTH)
-
-
-def confirm_reset(d):
-    return not d.yesno(
-        "Are you sure you want to reset everything?",
-        width=YESNO_WIDTH)
+    d.setBackgroundTitle('snf-image-creator')
 
+    gauge = GaugeOutput(d, "Initialization", "Initializing...")
+    out.add(gauge)
+    disk = Disk(media, out)
 
-def upload_image(session):
-    d = session["dialog"]
+    def signal_handler(signum, frame):
+        gauge.cleanup()
+        disk.cleanup()
 
-    if "account" not in session:
-        d.msgbox("You need to provide your ~okeanos login username before you "
-                 "can upload images to pithos+", width=MSGBOX_WIDTH)
-        return False
+    signal.signal(signal.SIGINT, signal_handler)
+    signal.signal(signal.SIGTERM, signal_handler)
+    try:
+        snapshot = disk.snapshot()
+        dev = disk.get_device(snapshot)
 
-    if "token" not in session:
-        d.msgbox("You need to provide your ~okeanos account authentication "
-                 "token before you can upload images to pithos+",
-                 width=MSGBOX_WIDTH)
-        return False
+        metadata = {}
+        for (key, value) in dev.meta.items():
+            metadata[str(key)] = str(value)
 
-    while 1:
-        (code, answer) = d.inputbox("Please provide a filename:",
-                        init=session["upload"] if "upload" in session else '')
-        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-            return False
+        dev.mount(readonly=True)
+        out.output("Collecting image metadata...")
+        cls = os_cls(dev.distro, dev.ostype)
+        image_os = cls(dev.root, dev.g, out)
+        dev.umount()
 
-        answer = answer.strip()
-        if len(answer) == 0:
-            d.msgbox("Filename cannot be empty", width=MSGBOX_WIDTH)
-            continue
+        for (key, value) in image_os.meta.items():
+            metadata[str(key)] = str(value)
 
-        session["upload"] = answer
-        return True
+        out.success("done")
+        gauge.cleanup()
+        out.remove(gauge)
 
+        # Make sure the signal handler does not call gauge.cleanup again
+        def dummy(self):
+            pass
+        gauge.cleanup = type(GaugeOutput.cleanup)(dummy, gauge, GaugeOutput)
 
-def register_image(session):
-    d = session["dialog"]
+        session = {"dialog": d,
+                   "disk": disk,
+                   "snapshot": snapshot,
+                   "device": dev,
+                   "image_os": image_os,
+                   "metadata": metadata}
 
-    if "account" not in session:
-        d.msgbox("You need to provide your ~okeanos login username before you "
-                 "can register an images to cyclades",
-                 width=MSGBOX_WIDTH)
-        return False
+        msg = "snf-image-creator detected a %s system on the input media. " \
+              "Would you like to run a wizard to assist you through the " \
+              "image creation process?\n\nChoose <Wizard> to run the wizard," \
+              " <Expert> to run the snf-image-creator in expert mode or " \
+              "press ESC to quit the program." \
+              % (dev.ostype if dev.ostype == dev.distro else "%s (%s)" %
+                 (dev.ostype, dev.distro))
+
+        update_background_title(session)
+
+        while True:
+            code = d.yesno(msg, width=WIDTH, height=12, yes_label="Wizard",
+                           no_label="Expert")
+            if code == d.DIALOG_OK:
+                if wizard(session):
+                    break
+            elif code == d.DIALOG_CANCEL:
+                main_menu(session)
+                break
 
-    if "token" not in session:
-        d.msgbox("You need to provide your ~okeanos account authentication "
-                 "token before you can register an images to cyclades",
-                 width=MSGBOX_WIDTH)
-        return False
+            if confirm_exit(d):
+                break
 
-    if "upload" not in session:
-        d.msgbox("You need to have an image uploaded to pithos+ before you "
-                 "can register it to cyclades",
-                 width=MSGBOX_WIDTH)
-        return False
+        d.infobox("Thank you for using snf-image-creator. Bye", width=53)
+    finally:
+        disk.cleanup()
 
-    return True
+    return 0
 
 
-def kamaki_menu(session):
-    d = session['dialog']
-    default_item = "Account"
+def select_file(d, media):
+    root = os.sep
     while 1:
-        account = session["account"] if "account" in session else "<none>"
-        token = session["token"] if "token" in session else "<none>"
-        upload = session["upload"] if "upload" in session else "<none>"
-        (code, choice) = d.menu(
-            "Choose one of the following or press <Back> to go back.",
-            width=MENU_WIDTH,
-            choices=[("Account", "Change your ~okeanos username: %s" %
-                      account),
-                     ("Token", "Change your ~okeanos token: %s" %
-                      token),
-                     ("Upload", "Upload image to pithos+"),
-                     ("Register", "Register image to cyclades: %s" % upload)],
-            cancel="Back",
-            default_item=default_item,
-            title="Image Registration Menu")
-
-        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-            return False
-
-        if choice == "Account":
-            default_item = "Account"
-            (code, answer) = d.inputbox(
-                "Please provide your ~okeanos account e-mail address:",
-                init=session["account"] if "account" in session else '',
-                width=70)
-            if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-                continue
-            if len(answer) == 0 and "account" in session:
-                    del session["account"]
+        if media is not None:
+            if not os.path.exists(media):
+                d.msgbox("The file `%s' you choose does not exist." % media,
+                         width=SMALL_WIDTH)
             else:
-                session["account"] = answer.strip()
-                default_item = "Token"
-        elif choice == "Token":
-            default_item = "Token"
-            (code, answer) = d.inputbox(
-                "Please provide your ~okeanos account authetication token:",
-                init=session["token"] if "token" in session else '',
-                width=70)
-            if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-                continue
-            if len(answer) == 0 and "token" in session:
-                del session["token"]
-            else:
-                session["token"] = answer.strip()
-                default_item = "Upload"
-        elif choice == "Upload":
-            if upload_image(session):
-                default_item = "Register"
-            else:
-                default_item = "Upload"
-        elif choice == "Register":
-            if register_image(session):
-                return True
-            else:
-                default_item = "Register"
-
-
-def main_menu(session):
-    d = session['dialog']
-    dev = session['device']
-    d.setBackgroundTitle("OS: %s, Distro: %s" % (dev.ostype, dev.distro))
-    actions = {"Register": kamaki_menu}
-    default_item = "Customize"
-
-    while 1:
-        (code, choice) = d.menu(
-            "Choose one of the following or press <Exit> to exit.",
-            width=MENU_WIDTH,
-            choices=[("Customize", "Run various image customization tasks"),
-                     ("Deploy", "Configure ~okeanos image deployment options"),
-                     ("Register", "Register image to ~okeanos"),
-                     ("Extract", "Dump image to local file system"),
-                     ("Reset", "Reset everything and start over again"),
-                     ("Help", "Get help for using snf-image-creator")],
-            cancel="Exit",
-            default_item=default_item,
-            title="Image Creator for ~okeanos (snf-image-creator version %s)" %
-                  version)
-
-        if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
-            if confirm_exit(d):
                 break
-            else:
-                continue
-
-        if choice == "Reset":
-            if confirm_reset(d):
-                d.infobox("Resetting snf-image-creator. Please wait...")
-                raise Reset
-            else:
-                continue
-        elif choice in actions:
-            actions[choice](session)
-
 
-def select_file(d):
-    root = os.sep
-    while 1:
-        (code, path) = d.fselect(root, 10, 50,
-                                 title="Please select input media")
+        (code, media) = d.fselect(root, 10, 60, extra_button=1,
+            title="Please select an input media.",
+            extra_label="Running System")
         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
             if confirm_exit(d, "You canceled the media selection dialog box."):
                 sys.exit(0)
             else:
+                media = None
                 continue
+        elif code == d.DIALOG_EXTRA:
+            media = '/'
 
-        if not os.path.exists(path):
-            d.msgbox("The file you choose does not exist", width=MSGBOX_WIDTH)
-            continue
-        else:
-            break
+    return media
 
-    return path
 
+def main():
 
-def collect_metadata(dev, out):
+    d = dialog.Dialog(dialog="dialog")
 
-    dev.mount(readonly=True)
-    out.output("Collecting image metadata...")
-    cls = os_cls(dev.distro, dev.ostype)
-    image_os = cls(dev.root, dev.g, out)
-    out.success("done")
-    dev.umount()
+    # Add extra button in dialog library
+    dialog._common_args_syntax["extra_button"] = \
+        lambda enable: dialog._simple_option("--extra-button", enable)
 
-    return image_os.meta
+    dialog._common_args_syntax["extra_label"] = \
+        lambda string: ("--extra-label", string)
 
+    # Allow yes-no label overwriting
+    dialog._common_args_syntax["yes_label"] = \
+        lambda string: ("--yes-label", string)
 
-def image_creator(d):
-    basename = os.path.basename(sys.argv[0])
-    usage = "Usage: %s [input_media]" % basename
-    if len(sys.argv) > 2:
-        sys.stderr.write("%s\n" % usage)
-        return 1
+    dialog._common_args_syntax["no_label"] = \
+        lambda string: ("--no-label", string)
 
-    if os.geteuid() != 0:
-        raise FatalError("You must run %s as root" % basename)
+    usage = "Usage: %prog [options] [<input_media>]"
+    parser = optparse.OptionParser(version=version, usage=usage)
+    parser.add_option("-l", "--logfile", type="string", dest="logfile",
+                      default=None, help="log all messages to FILE",
+                      metavar="FILE")
 
-    media = sys.argv[1] if len(sys.argv) == 2 else select_file(d)
+    options, args = parser.parse_args(sys.argv[1:])
 
-    out = InitializationOutput(d)
-    disk = Disk(media, out)
+    if len(args) > 1:
+        parser.error("Wrong number of arguments")
 
-    def signal_handler(signum, fram):
-        out.cleanup()
-        disk.cleanup()
+    d.setBackgroundTitle('snf-image-creator')
 
-    signal.signal(signal.SIGINT, signal_handler)
     try:
-        snapshot = disk.snapshot()
-        dev = disk.get_device(snapshot)
-
-        metadata = collect_metadata(dev, out)
-        out.cleanup()
-
-        # Make sure the signal handler does not call out.cleanup again
-        def dummy(self):
-            pass
-        instancemethod = type(InitializationOutput.cleanup)
-        out.cleanup = instancemethod(dummy, out, InitializationOutput)
-
-        session = {"dialog": d,
-                   "disk": disk,
-                   "device": dev,
-                   "metadata": metadata}
+        if os.geteuid() != 0:
+            raise FatalError("You must run %s as root" %
+                             parser.get_prog_name())
 
-        main_menu(session)
-        d.infobox("Thank you for using snf-image-creator. Bye", width=53)
-    finally:
-        disk.cleanup()
+        media = select_file(d, args[0] if len(args) == 1 else None)
 
-    return 0
-
-
-def main():
-
-    d = dialog.Dialog(dialog="dialog")
-
-    while 1:
-        try:
+        logfile = None
+        if options.logfile is not None:
             try:
-                ret = image_creator(d)
-                sys.exit(ret)
-            except FatalError as e:
-                msg = textwrap.fill(str(e), width=70)
-                d.infobox(msg, width=70, title="Fatal Error")
-                sys.exit(1)
-        except Reset:
-            continue
+                logfile = open(options.logfile, 'w')
+            except IOError as e:
+                raise FatalError(
+                    "Unable to open logfile `%s' for writing. Reason: %s" %
+                    (options.logfile, e.strerror))
+        try:
+            log = SimpleOutput(False, logfile) if logfile is not None \
+                else Output()
+            while 1:
+                try:
+                    out = CompositeOutput([log])
+                    out.output("Starting %s v%s..." %
+                               (parser.get_prog_name(), version))
+                    ret = image_creator(d, media, out)
+                    sys.exit(ret)
+                except Reset:
+                    log.output("Resetting everything...")
+                    continue
+        finally:
+            if logfile is not None:
+                logfile.close()
+    except FatalError as e:
+        msg = textwrap.fill(str(e), width=WIDTH)
+        d.infobox(msg, width=WIDTH, title="Fatal Error")
+        sys.exit(1)
 
 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :