code.grnet.gr Git - snf-image-creator/blob - image_creator/dialog_menu.py

   1 # -*- coding: utf-8 -*-
   2 #
   3 # Copyright 2012 GRNET S.A. All rights reserved.
   4 #
   5 # Redistribution and use in source and binary forms, with or
   6 # without modification, are permitted provided that the following
   7 # conditions are met:
   8 #
   9 #   1. Redistributions of source code must retain the above
  10 #      copyright notice, this list of conditions and the following
  11 #      disclaimer.
  12 #
  13 #   2. Redistributions in binary form must reproduce the above
  14 #      copyright notice, this list of conditions and the following
  15 #      disclaimer in the documentation and/or other materials
  16 #      provided with the distribution.
  17 #
  18 # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  19 # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  20 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  21 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  22 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  25 # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  26 # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  28 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29 # POSSIBILITY OF SUCH DAMAGE.
  30 #
  31 # The views and conclusions contained in the software and
  32 # documentation are those of the authors and should not be
  33 # interpreted as representing official policies, either expressed
  34 # or implied, of GRNET S.A.
  35
  36 """This module implements the "expert" mode of the dialog-based version of
  37 snf-image-creator.
  38 """
  39
  40 import os
  41 import textwrap
  42 import StringIO
  43 import json
  44
  45 from image_creator import __version__ as version
  46 from image_creator.util import MD5, FatalError
  47 from image_creator.output.dialog import GaugeOutput, InfoBoxOutput
  48 from image_creator.kamaki_wrapper import Kamaki, ClientError
  49 from image_creator.help import get_help_file
  50 from image_creator.dialog_util import SMALL_WIDTH, WIDTH, \
  51     update_background_title, confirm_reset, confirm_exit, Reset, \
  52     extract_image, extract_metadata_string, add_cloud, edit_cloud
  53
  54 CONFIGURATION_TASKS = [
  55     ("Partition table manipulation", ["FixPartitionTable"],
  56         ["linux", "windows"]),
  57     ("File system resize",
  58         ["FilesystemResizeUnmounted", "FilesystemResizeMounted"],
  59         ["linux", "windows"]),
  60     ("Swap partition configuration", ["AddSwap"], ["linux"]),
  61     ("SSH keys removal", ["DeleteSSHKeys"], ["linux"]),
  62     ("Temporal RDP disabling", ["DisableRemoteDesktopConnections"],
  63         ["windows"]),
  64     ("SELinux relabeling at next boot", ["SELinuxAutorelabel"], ["linux"]),
  65     ("Hostname/Computer Name assignment", ["AssignHostname"],
  66         ["windows", "linux"]),
  67     ("Password change", ["ChangePassword"], ["windows", "linux"]),
  68     ("File injection", ["EnforcePersonality"], ["windows", "linux"])
  69 ]
  70
  71
  72 class MetadataMonitor(object):
  73     """Monitors image metadata chages"""
  74     def __init__(self, session, meta):
  75         self.session = session
  76         self.meta = meta
  77
  78     def __enter__(self):
  79         self.old = {}
  80         for (k, v) in self.meta.items():
  81             self.old[k] = v
  82
  83     def __exit__(self, type, value, traceback):
  84         d = self.session['dialog']
  85
  86         altered = {}
  87         added = {}
  88
  89         for (k, v) in self.meta.items():
  90             if k not in self.old:
  91                 added[k] = v
  92             elif self.old[k] != v:
  93                 altered[k] = v
  94
  95         if not (len(added) or len(altered)):
  96             return
  97
  98         msg = "The last action has changed some image properties:\n\n"
  99         if len(added):
 100             msg += "New image properties:\n"
 101             for (k, v) in added.items():
 102                 msg += '    %s: "%s"\n' % (k, v)
 103             msg += "\n"
 104         if len(altered):
 105             msg += "Updated image properties:\n"
 106             for (k, v) in altered.items():
 107                 msg += '    %s: "%s" -> "%s"\n' % (k, self.old[k], v)
 108             msg += "\n"
 109
 110         self.session['metadata'].update(added)
 111         self.session['metadata'].update(altered)
 112         d.msgbox(msg, title="Image Property Changes", width=SMALL_WIDTH)
 113
 114
 115 def upload_image(session):
 116     """Upload the image to the storage service"""
 117     d = session["dialog"]
 118     image = session['image']
 119     meta = session['metadata']
 120     size = image.size
 121
 122     if "account" not in session:
 123         d.msgbox("You need to select a valid cloud before you can upload "
 124                  "images to it", width=SMALL_WIDTH)
 125         return False
 126
 127     while 1:
 128         if 'upload' in session:
 129             init = session['upload']
 130         elif 'OS' in meta:
 131             init = "%s.diskdump" % meta['OS']
 132         else:
 133             init = ""
 134         (code, answer) = d.inputbox("Please provide a filename:", init=init,
 135                                     width=WIDTH)
 136
 137         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 138             return False
 139
 140         filename = answer.strip()
 141         if len(filename) == 0:
 142             d.msgbox("Filename cannot be empty", width=SMALL_WIDTH)
 143             continue
 144
 145         kamaki = Kamaki(session['account'], None)
 146         overwrite = []
 147         for f in (filename, "%s.md5sum" % filename, "%s.meta" % filename):
 148             if kamaki.object_exists(f):
 149                 overwrite.append(f)
 150
 151         if len(overwrite) > 0:
 152             if d.yesno("The following storage service object(s) already "
 153                        "exist(s):\n%s\nDo you want to overwrite them?" %
 154                        "\n".join(overwrite), width=WIDTH, defaultno=1):
 155                 continue
 156
 157         session['upload'] = filename
 158         break
 159
 160     gauge = GaugeOutput(d, "Image Upload", "Uploading ...")
 161     try:
 162         out = image.out
 163         out.add(gauge)
 164         kamaki.out = out
 165         try:
 166             if 'checksum' not in session:
 167                 md5 = MD5(out)
 168                 session['checksum'] = md5.compute(image.device, size)
 169
 170             try:
 171                 # Upload image file
 172                 with open(image.device, 'rb') as f:
 173                     session["pithos_uri"] = \
 174                         kamaki.upload(f, size, filename,
 175                                       "Calculating block hashes",
 176                                       "Uploading missing blocks")
 177                 # Upload md5sum file
 178                 out.output("Uploading md5sum file ...")
 179                 md5str = "%s %s\n" % (session['checksum'], filename)
 180                 kamaki.upload(StringIO.StringIO(md5str), size=len(md5str),
 181                               remote_path="%s.md5sum" % filename)
 182                 out.success("done")
 183
 184             except ClientError as e:
 185                 d.msgbox(
 186                     "Error in storage service client: %s" % e.message,
 187                     title="Storage Service Client Error", width=SMALL_WIDTH)
 188                 if 'pithos_uri' in session:
 189                     del session['pithos_uri']
 190                 return False
 191         finally:
 192             out.remove(gauge)
 193     finally:
 194         gauge.cleanup()
 195
 196     d.msgbox("Image file `%s' was successfully uploaded" % filename,
 197              width=SMALL_WIDTH)
 198
 199     return True
 200
 201
 202 def register_image(session):
 203     """Register image with the compute service"""
 204     d = session["dialog"]
 205
 206     is_public = False
 207
 208     if "account" not in session:
 209         d.msgbox("You need to select a valid cloud before you "
 210                  "can register an images with it", width=SMALL_WIDTH)
 211         return False
 212
 213     if "pithos_uri" not in session:
 214         d.msgbox("You need to upload the image to the cloud before you can "
 215                  "register it", width=SMALL_WIDTH)
 216         return False
 217
 218     while 1:
 219         (code, answer) = d.inputbox("Please provide a registration name:",
 220                                     width=WIDTH)
 221         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 222             return False
 223
 224         name = answer.strip()
 225         if len(name) == 0:
 226             d.msgbox("Registration name cannot be empty", width=SMALL_WIDTH)
 227             continue
 228
 229         ret = d.yesno("Make the image public?\\nA public image is accessible "
 230                       "by every user of the service.", defaultno=1,
 231                       width=WIDTH)
 232         if ret not in (0, 1):
 233             continue
 234
 235         is_public = True if ret == 0 else False
 236
 237         break
 238
 239     metadata = {}
 240     metadata.update(session['metadata'])
 241     if 'task_metadata' in session:
 242         for key in session['task_metadata']:
 243             metadata[key] = 'yes'
 244
 245     img_type = "public" if is_public else "private"
 246     gauge = GaugeOutput(d, "Image Registration", "Registering image ...")
 247     try:
 248         out = session['image'].out
 249         out.add(gauge)
 250         try:
 251             try:
 252                 out.output("Registering %s image with the cloud ..." %
 253                            img_type)
 254                 kamaki = Kamaki(session['account'], out)
 255                 result = kamaki.register(name, session['pithos_uri'], metadata,
 256                                          is_public)
 257                 out.success('done')
 258                 # Upload metadata file
 259                 out.output("Uploading metadata file ...")
 260                 metastring = unicode(json.dumps(result, ensure_ascii=False))
 261                 kamaki.upload(StringIO.StringIO(metastring),
 262                               size=len(metastring),
 263                               remote_path="%s.meta" % session['upload'])
 264                 out.success("done")
 265                 if is_public:
 266                     out.output("Sharing metadata and md5sum files ...")
 267                     kamaki.share("%s.meta" % session['upload'])
 268                     kamaki.share("%s.md5sum" % session['upload'])
 269                     out.success('done')
 270             except ClientError as e:
 271                 d.msgbox("Error in storage service client: %s" % e.message)
 272                 return False
 273         finally:
 274             out.remove(gauge)
 275     finally:
 276         gauge.cleanup()
 277
 278     d.msgbox("%s image `%s' was successfully registered with the cloud as `%s'"
 279              % (img_type.title(), session['upload'], name), width=SMALL_WIDTH)
 280     return True
 281
 282
 283 def modify_clouds(session):
 284     """Modify existing cloud accounts"""
 285     d = session['dialog']
 286
 287     while 1:
 288         clouds = Kamaki.get_clouds()
 289         if not len(clouds):
 290             if not add_cloud(session):
 291                 break
 292             continue
 293
 294         choices = []
 295         for (name, cloud) in clouds.items():
 296             descr = cloud['description'] if 'description' in cloud else ''
 297             choices.append((name, descr))
 298
 299         (code, choice) = d.menu(
 300             "In this menu you can edit existing cloud accounts or add new "
 301             " ones. Press <Edit> to edit an existing account or <Add> to add "
 302             " a new one. Press <Back> or hit <ESC> when done.", height=18,
 303             width=WIDTH, choices=choices, menu_height=10, ok_label="Edit",
 304             extra_button=1, extra_label="Add", cancel="Back", help_button=1,
 305             title="Clouds")
 306
 307         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 308             return True
 309         elif code == d.DIALOG_OK:  # Edit button
 310             edit_cloud(session, choice)
 311         elif code == d.DIALOG_EXTRA:  # Add button
 312             add_cloud(session)
 313
 314
 315 def delete_clouds(session):
 316     """Delete existing cloud accounts"""
 317     d = session['dialog']
 318
 319     choices = []
 320     for (name, cloud) in Kamaki.get_clouds().items():
 321         descr = cloud['description'] if 'description' in cloud else ''
 322         choices.append((name, descr, 0))
 323
 324     if len(choices) == 0:
 325         d.msgbox("No available clouds to delete!", width=SMALL_WIDTH)
 326         return True
 327
 328     (code, to_delete) = d.checklist("Choose which cloud accounts to delete:",
 329                                     choices=choices, width=WIDTH)
 330
 331     if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 332         return False
 333
 334     if not len(to_delete):
 335         d.msgbox("Nothing selected!", width=SMALL_WIDTH)
 336         return False
 337
 338     if not d.yesno("Are you sure you want to remove the selected cloud "
 339                    "accounts?", width=WIDTH, defaultno=1):
 340         for i in to_delete:
 341             Kamaki.remove_cloud(i)
 342             if 'cloud' in session and session['cloud'] == i:
 343                 del session['cloud']
 344                 if 'account' in session:
 345                     del session['account']
 346     else:
 347         return False
 348
 349     d.msgbox("%d cloud accounts were deleted." % len(to_delete),
 350              width=SMALL_WIDTH)
 351     return True
 352
 353
 354 def kamaki_menu(session):
 355     """Show kamaki related actions"""
 356     d = session['dialog']
 357     default_item = "Cloud"
 358
 359     if 'cloud' not in session:
 360         cloud = Kamaki.get_default_cloud_name()
 361         if cloud:
 362             session['cloud'] = cloud
 363             session['account'] = Kamaki.get_account(cloud)
 364             if not session['account']:
 365                 del session['account']
 366         else:
 367             default_item = "Add/Edit"
 368
 369     while 1:
 370         cloud = session["cloud"] if "cloud" in session else "<none>"
 371         if 'account' not in session and 'cloud' in session:
 372             cloud += " <invalid>"
 373
 374         upload = session["upload"] if "upload" in session else "<none>"
 375
 376         choices = [("Add/Edit", "Add/Edit cloud accounts"),
 377                    ("Delete", "Delete existing cloud accounts"),
 378                    ("Cloud", "Select cloud account to use: %s" % cloud),
 379                    ("Upload", "Upload image to the cloud"),
 380                    ("Register", "Register image with the cloud: %s" % upload)]
 381
 382         (code, choice) = d.menu(
 383             text="Choose one of the following or press <Back> to go back.",
 384             width=WIDTH, choices=choices, cancel="Back", height=13,
 385             menu_height=5, default_item=default_item,
 386             title="Image Registration Menu")
 387
 388         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 389             return False
 390
 391         if choice == "Add/Edit":
 392             if modify_clouds(session):
 393                 default_item = "Cloud"
 394         elif choice == "Delete":
 395             if delete_clouds(session):
 396                 if len(Kamaki.get_clouds()):
 397                     default_item = "Cloud"
 398                 else:
 399                     default_time = "Add/Edit"
 400             else:
 401                 default_time = "Delete"
 402         elif choice == "Cloud":
 403             default_item = "Cloud"
 404             clouds = Kamaki.get_clouds()
 405             if not len(clouds):
 406                 d.msgbox("No clouds available. Please add a new cloud!",
 407                          width=SMALL_WIDTH)
 408                 default_item = "Add/Edit"
 409                 continue
 410
 411             if 'cloud' not in session:
 412                 session['cloud'] = clouds.keys()[0]
 413
 414             choices = []
 415             for name, info in clouds.items():
 416                 default = 1 if session['cloud'] == name else 0
 417                 descr = info['description'] if 'description' in info else ""
 418                 choices.append((name, descr, default))
 419
 420             (code, answer) = d.radiolist("Please select a cloud:",
 421                                          width=WIDTH, choices=choices)
 422             if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 423                 continue
 424             else:
 425                 session['account'] = Kamaki.get_account(answer)
 426
 427                 if session['account'] is None:  # invalid account
 428                     if not d.yesno("The cloud %s' is not valid! Would you "
 429                                    "like to edit it?" % answer, width=WIDTH):
 430                         if edit_cloud(session, answer):
 431                             session['account'] = Kamaki.get_account(answer)
 432                             Kamaki.set_default_cloud(answer)
 433
 434                 if session['account'] is not None:
 435                     session['cloud'] = answer
 436                     Kamaki.set_default_cloud(answer)
 437                     default_item = "Upload"
 438                 else:
 439                     del session['account']
 440                     del session['cloud']
 441         elif choice == "Upload":
 442             if upload_image(session):
 443                 default_item = "Register"
 444             else:
 445                 default_item = "Upload"
 446         elif choice == "Register":
 447             if register_image(session):
 448                 return True
 449             else:
 450                 default_item = "Register"
 451
 452
 453 def add_property(session):
 454     """Add a new property to the image"""
 455     d = session['dialog']
 456
 457     while 1:
 458         (code, answer) = d.inputbox("Please provide a name for a new image"
 459                                     " property:", width=WIDTH)
 460         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 461             return False
 462
 463         name = answer.strip()
 464         if len(name) == 0:
 465             d.msgbox("A property name cannot be empty", width=SMALL_WIDTH)
 466             continue
 467
 468         break
 469
 470     while 1:
 471         (code, answer) = d.inputbox("Please provide a value for image "
 472                                     "property %s" % name, width=WIDTH)
 473         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 474             return False
 475
 476         value = answer.strip()
 477         if len(value) == 0:
 478             d.msgbox("Value cannot be empty", width=SMALL_WIDTH)
 479             continue
 480
 481         break
 482
 483     session['metadata'][name] = value
 484
 485     return True
 486
 487
 488 def modify_properties(session):
 489     """Modify an existing image property"""
 490     d = session['dialog']
 491
 492     while 1:
 493         choices = []
 494         for (key, val) in session['metadata'].items():
 495             choices.append((str(key), str(val)))
 496
 497         (code, choice) = d.menu(
 498             "In this menu you can edit existing image properties or add new "
 499             "ones. Be careful! Most properties have special meaning and "
 500             "alter the image deployment behaviour. Press <HELP> to see more "
 501             "information about image properties. Press <BACK> when done.",
 502             height=18, width=WIDTH, choices=choices, menu_height=10,
 503             ok_label="Edit", extra_button=1, extra_label="Add", cancel="Back",
 504             help_button=1, title="Image Properties")
 505
 506         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 507             return True
 508         # Edit button
 509         elif code == d.DIALOG_OK:
 510             (code, answer) = d.inputbox("Please provide a new value for the "
 511                                         "image property with name `%s':" %
 512                                         choice,
 513                                         init=session['metadata'][choice],
 514                                         width=WIDTH)
 515             if code not in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 516                 value = answer.strip()
 517                 if len(value) == 0:
 518                     d.msgbox("Value cannot be empty!")
 519                     continue
 520                 else:
 521                     session['metadata'][choice] = value
 522         # ADD button
 523         elif code == d.DIALOG_EXTRA:
 524             add_property(session)
 525         elif code == 'help':
 526             help_file = get_help_file("image_properties")
 527             assert os.path.exists(help_file)
 528             d.textbox(help_file, title="Image Properties", width=70, height=40)
 529
 530
 531 def delete_properties(session):
 532     """Delete an image property"""
 533     d = session['dialog']
 534
 535     choices = []
 536     for (key, val) in session['metadata'].items():
 537         choices.append((key, "%s" % val, 0))
 538
 539     (code, to_delete) = d.checklist("Choose which properties to delete:",
 540                                     choices=choices, width=WIDTH)
 541
 542     # If the user exits with ESC or CANCEL, the returned tag list is empty.
 543     for i in to_delete:
 544         del session['metadata'][i]
 545
 546     cnt = len(to_delete)
 547     if cnt > 0:
 548         d.msgbox("%d image properties were deleted." % cnt, width=SMALL_WIDTH)
 549         return True
 550     else:
 551         return False
 552
 553
 554 def exclude_tasks(session):
 555     """Exclude specific tasks from running during image deployment"""
 556     d = session['dialog']
 557
 558     index = 0
 559     displayed_index = 1
 560     choices = []
 561     mapping = {}
 562     if 'excluded_tasks' not in session:
 563         session['excluded_tasks'] = []
 564
 565     if -1 in session['excluded_tasks']:
 566         if not d.yesno("Image deployment configuration is disabled. "
 567                        "Do you wish to enable it?", width=SMALL_WIDTH):
 568             session['excluded_tasks'].remove(-1)
 569         else:
 570             return False
 571
 572     for (msg, task, osfamily) in CONFIGURATION_TASKS:
 573         if session['metadata']['OSFAMILY'] in osfamily:
 574             checked = 1 if index in session['excluded_tasks'] else 0
 575             choices.append((str(displayed_index), msg, checked))
 576             mapping[displayed_index] = index
 577             displayed_index += 1
 578         index += 1
 579
 580     while 1:
 581         (code, tags) = d.checklist(
 582             text="Please choose which configuration tasks you would like to "
 583                  "prevent from running during image deployment. "
 584                  "Press <No Config> to supress any configuration. "
 585                  "Press <Help> for more help on the image deployment "
 586                  "configuration tasks.",
 587             choices=choices, height=19, list_height=8, width=WIDTH,
 588             help_button=1, extra_button=1, extra_label="No Config",
 589             title="Exclude Configuration Tasks")
 590
 591         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 592             return False
 593         elif code == d.DIALOG_HELP:
 594             help_file = get_help_file("configuration_tasks")
 595             assert os.path.exists(help_file)
 596             d.textbox(help_file, title="Configuration Tasks",
 597                       width=70, height=40)
 598         # No Config button
 599         elif code == d.DIALOG_EXTRA:
 600             session['excluded_tasks'] = [-1]
 601             session['task_metadata'] = ["EXCLUDE_ALL_TASKS"]
 602             break
 603         elif code == d.DIALOG_OK:
 604             session['excluded_tasks'] = []
 605             for tag in tags:
 606                 session['excluded_tasks'].append(mapping[int(tag)])
 607
 608             exclude_metadata = []
 609             for task in session['excluded_tasks']:
 610                 exclude_metadata.extend(CONFIGURATION_TASKS[task][1])
 611
 612             session['task_metadata'] = map(lambda x: "EXCLUDE_TASK_%s" % x,
 613                                            exclude_metadata)
 614             break
 615
 616     return True
 617
 618
 619 def sysprep(session):
 620     """Perform various system preperation tasks on the image"""
 621     d = session['dialog']
 622     image = session['image']
 623
 624     # Is the image already shrinked?
 625     if 'shrinked' in session and session['shrinked']:
 626         msg = "It seems you have shrinked the image. Running system " \
 627               "preparation tasks on a shrinked image is dangerous."
 628
 629         if d.yesno("%s\n\nDo you really want to continue?" % msg,
 630                    width=SMALL_WIDTH, defaultno=1):
 631             return
 632
 633     wrapper = textwrap.TextWrapper(width=WIDTH - 5)
 634
 635     help_title = "System Preperation Tasks"
 636     sysprep_help = "%s\n%s\n\n" % (help_title, '=' * len(help_title))
 637
 638     syspreps = image.os.list_syspreps()
 639
 640     if len(syspreps) == 0:
 641         d.msgbox("No system preparation task available to run!",
 642                  title="System Preperation", width=SMALL_WIDTH)
 643         return
 644
 645     while 1:
 646         choices = []
 647         index = 0
 648         for sysprep in syspreps:
 649             name, descr = image.os.sysprep_info(sysprep)
 650             display_name = name.replace('-', ' ').capitalize()
 651             sysprep_help += "%s\n" % display_name
 652             sysprep_help += "%s\n" % ('-' * len(display_name))
 653             sysprep_help += "%s\n\n" % wrapper.fill(" ".join(descr.split()))
 654             enabled = 1 if sysprep.enabled else 0
 655             choices.append((str(index + 1), display_name, enabled))
 656             index += 1
 657
 658         (code, tags) = d.checklist(
 659             "Please choose which system preparation tasks you would like to "
 660             "run on the image. Press <Help> to see details about the system "
 661             "preparation tasks.", title="Run system preparation tasks",
 662             choices=choices, width=70, ok_label="Run", help_button=1)
 663
 664         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 665             return False
 666         elif code == d.DIALOG_HELP:
 667             d.scrollbox(sysprep_help, width=WIDTH)
 668         elif code == d.DIALOG_OK:
 669             # Enable selected syspreps and disable the rest
 670             for i in range(len(syspreps)):
 671                 if str(i + 1) in tags:
 672                     image.os.enable_sysprep(syspreps[i])
 673                 else:
 674                     image.os.disable_sysprep(syspreps[i])
 675
 676             if len([s for s in image.os.list_syspreps() if s.enabled]) == 0:
 677                 d.msgbox("No system preperation task is selected!",
 678                          title="System Preperation", width=SMALL_WIDTH)
 679                 continue
 680
 681             infobox = InfoBoxOutput(d, "Image Configuration")
 682             try:
 683                 image.out.add(infobox)
 684                 try:
 685                     # The checksum is invalid. We have mounted the image rw
 686                     if 'checksum' in session:
 687                         del session['checksum']
 688
 689                     # Monitor the metadata changes during syspreps
 690                     with MetadataMonitor(session, image.os.meta):
 691                         try:
 692                             image.os.do_sysprep()
 693                             infobox.finalize()
 694                         except FatalError as e:
 695                             title = "System Preparation"
 696                             d.msgbox("System Preparation failed: %s" % e,
 697                                      title=title, width=SMALL_WIDTH)
 698                 finally:
 699                     image.out.remove(infobox)
 700             finally:
 701                 infobox.cleanup()
 702             break
 703     return True
 704
 705
 706 def shrink(session):
 707     """Shrink the image"""
 708     d = session['dialog']
 709     image = session['image']
 710
 711     shrinked = 'shrinked' in session and session['shrinked']
 712
 713     if shrinked:
 714         d.msgbox("The image is already shrinked!", title="Image Shrinking",
 715                  width=SMALL_WIDTH)
 716         return True
 717
 718     msg = "This operation will shrink the last partition of the image to " \
 719           "reduce the total image size. If the last partition is a swap " \
 720           "partition, then this partition is removed and the partition " \
 721           "before that is shrinked. The removed swap partition will be " \
 722           "recreated during image deployment."
 723
 724     if not d.yesno("%s\n\nDo you want to continue?" % msg, width=WIDTH,
 725                    height=12, title="Image Shrinking"):
 726         with MetadataMonitor(session, image.meta):
 727             infobox = InfoBoxOutput(d, "Image Shrinking", height=4)
 728             image.out.add(infobox)
 729             try:
 730                 image.shrink()
 731                 infobox.finalize()
 732             finally:
 733                 image.out.remove(infobox)
 734
 735         session['shrinked'] = True
 736         update_background_title(session)
 737     else:
 738         return False
 739
 740     return True
 741
 742
 743 def customization_menu(session):
 744     """Show image customization menu"""
 745     d = session['dialog']
 746
 747     choices = [("Sysprep", "Run various image preparation tasks"),
 748                ("Shrink", "Shrink image"),
 749                ("View/Modify", "View/Modify image properties"),
 750                ("Delete", "Delete image properties"),
 751                ("Exclude", "Exclude various deployment tasks from running")]
 752
 753     default_item = 0
 754
 755     actions = {"Sysprep": sysprep,
 756                "Shrink": shrink,
 757                "View/Modify": modify_properties,
 758                "Delete": delete_properties,
 759                "Exclude": exclude_tasks}
 760     while 1:
 761         (code, choice) = d.menu(
 762             text="Choose one of the following or press <Back> to exit.",
 763             width=WIDTH, choices=choices, cancel="Back", height=13,
 764             menu_height=len(choices), default_item=choices[default_item][0],
 765             title="Image Customization Menu")
 766
 767         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 768             break
 769         elif choice in actions:
 770             default_item = [entry[0] for entry in choices].index(choice)
 771             if actions[choice](session):
 772                 default_item = (default_item + 1) % len(choices)
 773
 774
 775 def main_menu(session):
 776     """Show the main menu of the program"""
 777     d = session['dialog']
 778
 779     update_background_title(session)
 780
 781     choices = [("Customize", "Customize image & cloud deployment options"),
 782                ("Register", "Register image to a cloud"),
 783                ("Extract", "Dump image to local file system"),
 784                ("Reset", "Reset everything and start over again"),
 785                ("Help", "Get help for using snf-image-creator")]
 786
 787     default_item = "Customize"
 788
 789     actions = {"Customize": customization_menu, "Register": kamaki_menu,
 790                "Extract": extract_image}
 791     while 1:
 792         (code, choice) = d.menu(
 793             text="Choose one of the following or press <Exit> to exit.",
 794             width=WIDTH, choices=choices, cancel="Exit", height=13,
 795             default_item=default_item, menu_height=len(choices),
 796             title="Image Creator for synnefo (snf-image-creator version %s)" %
 797                   version)
 798
 799         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 800             if confirm_exit(d):
 801                 break
 802         elif choice == "Reset":
 803             if confirm_reset(d):
 804                 d.infobox("Resetting snf-image-creator. Please wait ...",
 805                           width=SMALL_WIDTH)
 806                 raise Reset
 807         elif choice == "Help":
 808             d.msgbox("For help, check the online documentation:\n\nhttp://www"
 809                      ".synnefo.org/docs/snf-image-creator/latest/",
 810                      width=WIDTH, title="Help")
 811         elif choice in actions:
 812             actions[choice](session)
 813
 814 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :