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 SYSPREP_PARAM_MAXLEN = 20
  72
  73 class MetadataMonitor(object):
  74     """Monitors image metadata chages"""
  75     def __init__(self, session, meta):
  76         self.session = session
  77         self.meta = meta
  78
  79     def __enter__(self):
  80         self.old = {}
  81         for (k, v) in self.meta.items():
  82             self.old[k] = v
  83
  84     def __exit__(self, type, value, traceback):
  85         d = self.session['dialog']
  86
  87         altered = {}
  88         added = {}
  89
  90         for (k, v) in self.meta.items():
  91             if k not in self.old:
  92                 added[k] = v
  93             elif self.old[k] != v:
  94                 altered[k] = v
  95
  96         if not (len(added) or len(altered)):
  97             return
  98
  99         msg = "The last action has changed some image properties:\n\n"
 100         if len(added):
 101             msg += "New image properties:\n"
 102             for (k, v) in added.items():
 103                 msg += '    %s: "%s"\n' % (k, v)
 104             msg += "\n"
 105         if len(altered):
 106             msg += "Updated image properties:\n"
 107             for (k, v) in altered.items():
 108                 msg += '    %s: "%s" -> "%s"\n' % (k, self.old[k], v)
 109             msg += "\n"
 110
 111         self.session['metadata'].update(added)
 112         self.session['metadata'].update(altered)
 113         d.msgbox(msg, title="Image Property Changes", width=SMALL_WIDTH)
 114
 115
 116 def upload_image(session):
 117     """Upload the image to the storage service"""
 118     d = session["dialog"]
 119     image = session['image']
 120     meta = session['metadata']
 121     size = image.size
 122
 123     if "account" not in session:
 124         d.msgbox("You need to select a valid cloud before you can upload "
 125                  "images to it", width=SMALL_WIDTH)
 126         return False
 127
 128     while 1:
 129         if 'upload' in session:
 130             init = session['upload']
 131         elif 'OS' in meta:
 132             init = "%s.diskdump" % meta['OS']
 133         else:
 134             init = ""
 135         (code, answer) = d.inputbox("Please provide a filename:", init=init,
 136                                     width=WIDTH)
 137
 138         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 139             return False
 140
 141         filename = answer.strip()
 142         if len(filename) == 0:
 143             d.msgbox("Filename cannot be empty", width=SMALL_WIDTH)
 144             continue
 145
 146         kamaki = Kamaki(session['account'], None)
 147         overwrite = []
 148         for f in (filename, "%s.md5sum" % filename, "%s.meta" % filename):
 149             if kamaki.object_exists(f):
 150                 overwrite.append(f)
 151
 152         if len(overwrite) > 0:
 153             if d.yesno("The following storage service object(s) already "
 154                        "exist(s):\n%s\nDo you want to overwrite them?" %
 155                        "\n".join(overwrite), width=WIDTH, defaultno=1):
 156                 continue
 157
 158         session['upload'] = filename
 159         break
 160
 161     gauge = GaugeOutput(d, "Image Upload", "Uploading ...")
 162     try:
 163         out = image.out
 164         out.add(gauge)
 165         kamaki.out = out
 166         try:
 167             if 'checksum' not in session:
 168                 md5 = MD5(out)
 169                 session['checksum'] = md5.compute(image.device, size)
 170
 171             try:
 172                 # Upload image file
 173                 with open(image.device, 'rb') as f:
 174                     session["pithos_uri"] = \
 175                         kamaki.upload(f, size, filename,
 176                                       "Calculating block hashes",
 177                                       "Uploading missing blocks")
 178                 # Upload md5sum file
 179                 out.output("Uploading md5sum file ...")
 180                 md5str = "%s %s\n" % (session['checksum'], filename)
 181                 kamaki.upload(StringIO.StringIO(md5str), size=len(md5str),
 182                               remote_path="%s.md5sum" % filename)
 183                 out.success("done")
 184
 185             except ClientError as e:
 186                 d.msgbox(
 187                     "Error in storage service client: %s" % e.message,
 188                     title="Storage Service Client Error", width=SMALL_WIDTH)
 189                 if 'pithos_uri' in session:
 190                     del session['pithos_uri']
 191                 return False
 192         finally:
 193             out.remove(gauge)
 194     finally:
 195         gauge.cleanup()
 196
 197     d.msgbox("Image file `%s' was successfully uploaded" % filename,
 198              width=SMALL_WIDTH)
 199
 200     return True
 201
 202
 203 def register_image(session):
 204     """Register image with the compute service"""
 205     d = session["dialog"]
 206
 207     is_public = False
 208
 209     if "account" not in session:
 210         d.msgbox("You need to select a valid cloud before you "
 211                  "can register an images with it", width=SMALL_WIDTH)
 212         return False
 213
 214     if "pithos_uri" not in session:
 215         d.msgbox("You need to upload the image to the cloud before you can "
 216                  "register it", width=SMALL_WIDTH)
 217         return False
 218
 219     while 1:
 220         (code, answer) = d.inputbox("Please provide a registration name:",
 221                                     width=WIDTH)
 222         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 223             return False
 224
 225         name = answer.strip()
 226         if len(name) == 0:
 227             d.msgbox("Registration name cannot be empty", width=SMALL_WIDTH)
 228             continue
 229
 230         ret = d.yesno("Make the image public?\\nA public image is accessible "
 231                       "by every user of the service.", defaultno=1,
 232                       width=WIDTH)
 233         if ret not in (0, 1):
 234             continue
 235
 236         is_public = True if ret == 0 else False
 237
 238         break
 239
 240     metadata = {}
 241     metadata.update(session['metadata'])
 242     if 'task_metadata' in session:
 243         for key in session['task_metadata']:
 244             metadata[key] = 'yes'
 245
 246     img_type = "public" if is_public else "private"
 247     gauge = GaugeOutput(d, "Image Registration", "Registering image ...")
 248     try:
 249         out = session['image'].out
 250         out.add(gauge)
 251         try:
 252             try:
 253                 out.output("Registering %s image with the cloud ..." %
 254                            img_type)
 255                 kamaki = Kamaki(session['account'], out)
 256                 result = kamaki.register(name, session['pithos_uri'], metadata,
 257                                          is_public)
 258                 out.success('done')
 259                 # Upload metadata file
 260                 out.output("Uploading metadata file ...")
 261                 metastring = unicode(json.dumps(result, ensure_ascii=False))
 262                 kamaki.upload(StringIO.StringIO(metastring),
 263                               size=len(metastring),
 264                               remote_path="%s.meta" % session['upload'])
 265                 out.success("done")
 266                 if is_public:
 267                     out.output("Sharing metadata and md5sum files ...")
 268                     kamaki.share("%s.meta" % session['upload'])
 269                     kamaki.share("%s.md5sum" % session['upload'])
 270                     out.success('done')
 271             except ClientError as e:
 272                 d.msgbox("Error in storage service client: %s" % e.message)
 273                 return False
 274         finally:
 275             out.remove(gauge)
 276     finally:
 277         gauge.cleanup()
 278
 279     d.msgbox("%s image `%s' was successfully registered with the cloud as `%s'"
 280              % (img_type.title(), session['upload'], name), width=SMALL_WIDTH)
 281     return True
 282
 283
 284 def modify_clouds(session):
 285     """Modify existing cloud accounts"""
 286     d = session['dialog']
 287
 288     while 1:
 289         clouds = Kamaki.get_clouds()
 290         if not len(clouds):
 291             if not add_cloud(session):
 292                 break
 293             continue
 294
 295         choices = []
 296         for (name, cloud) in clouds.items():
 297             descr = cloud['description'] if 'description' in cloud else ''
 298             choices.append((name, descr))
 299
 300         (code, choice) = d.menu(
 301             "In this menu you can edit existing cloud accounts or add new "
 302             " ones. Press <Edit> to edit an existing account or <Add> to add "
 303             " a new one. Press <Back> or hit <ESC> when done.", height=18,
 304             width=WIDTH, choices=choices, menu_height=10, ok_label="Edit",
 305             extra_button=1, extra_label="Add", cancel="Back", help_button=1,
 306             title="Clouds")
 307
 308         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 309             return True
 310         elif code == d.DIALOG_OK:  # Edit button
 311             edit_cloud(session, choice)
 312         elif code == d.DIALOG_EXTRA:  # Add button
 313             add_cloud(session)
 314
 315
 316 def delete_clouds(session):
 317     """Delete existing cloud accounts"""
 318     d = session['dialog']
 319
 320     choices = []
 321     for (name, cloud) in Kamaki.get_clouds().items():
 322         descr = cloud['description'] if 'description' in cloud else ''
 323         choices.append((name, descr, 0))
 324
 325     if len(choices) == 0:
 326         d.msgbox("No available clouds to delete!", width=SMALL_WIDTH)
 327         return True
 328
 329     (code, to_delete) = d.checklist("Choose which cloud accounts to delete:",
 330                                     choices=choices, width=WIDTH)
 331     to_delete = map(lambda x: x.strip('"'), to_delete)  # Needed for OpenSUSE
 332
 333     if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 334         return False
 335
 336     if not len(to_delete):
 337         d.msgbox("Nothing selected!", width=SMALL_WIDTH)
 338         return False
 339
 340     if not d.yesno("Are you sure you want to remove the selected cloud "
 341                    "accounts?", width=WIDTH, defaultno=1):
 342         for i in to_delete:
 343             Kamaki.remove_cloud(i)
 344             if 'cloud' in session and session['cloud'] == i:
 345                 del session['cloud']
 346                 if 'account' in session:
 347                     del session['account']
 348     else:
 349         return False
 350
 351     d.msgbox("%d cloud accounts were deleted." % len(to_delete),
 352              width=SMALL_WIDTH)
 353     return True
 354
 355
 356 def kamaki_menu(session):
 357     """Show kamaki related actions"""
 358     d = session['dialog']
 359     default_item = "Cloud"
 360
 361     if 'cloud' not in session:
 362         cloud = Kamaki.get_default_cloud_name()
 363         if cloud:
 364             session['cloud'] = cloud
 365             session['account'] = Kamaki.get_account(cloud)
 366             if not session['account']:
 367                 del session['account']
 368         else:
 369             default_item = "Add/Edit"
 370
 371     while 1:
 372         cloud = session["cloud"] if "cloud" in session else "<none>"
 373         if 'account' not in session and 'cloud' in session:
 374             cloud += " <invalid>"
 375
 376         upload = session["upload"] if "upload" in session else "<none>"
 377
 378         choices = [("Add/Edit", "Add/Edit cloud accounts"),
 379                    ("Delete", "Delete existing cloud accounts"),
 380                    ("Cloud", "Select cloud account to use: %s" % cloud),
 381                    ("Upload", "Upload image to the cloud"),
 382                    ("Register", "Register image with the cloud: %s" % upload)]
 383
 384         (code, choice) = d.menu(
 385             text="Choose one of the following or press <Back> to go back.",
 386             width=WIDTH, choices=choices, cancel="Back", height=13,
 387             menu_height=5, default_item=default_item,
 388             title="Image Registration Menu")
 389
 390         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 391             return False
 392
 393         if choice == "Add/Edit":
 394             if modify_clouds(session):
 395                 default_item = "Cloud"
 396         elif choice == "Delete":
 397             if delete_clouds(session):
 398                 if len(Kamaki.get_clouds()):
 399                     default_item = "Cloud"
 400                 else:
 401                     default_item = "Add/Edit"
 402             else:
 403                 default_item = "Delete"
 404         elif choice == "Cloud":
 405             default_item = "Cloud"
 406             clouds = Kamaki.get_clouds()
 407             if not len(clouds):
 408                 d.msgbox("No clouds available. Please add a new cloud!",
 409                          width=SMALL_WIDTH)
 410                 default_item = "Add/Edit"
 411                 continue
 412
 413             if 'cloud' not in session:
 414                 session['cloud'] = clouds.keys()[0]
 415
 416             choices = []
 417             for name, info in clouds.items():
 418                 default = 1 if session['cloud'] == name else 0
 419                 descr = info['description'] if 'description' in info else ""
 420                 choices.append((name, descr, default))
 421
 422             (code, answer) = d.radiolist("Please select a cloud:",
 423                                          width=WIDTH, choices=choices)
 424             if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 425                 continue
 426             else:
 427                 session['account'] = Kamaki.get_account(answer)
 428
 429                 if session['account'] is None:  # invalid account
 430                     if not d.yesno("The cloud %s' is not valid! Would you "
 431                                    "like to edit it?" % answer, width=WIDTH):
 432                         if edit_cloud(session, answer):
 433                             session['account'] = Kamaki.get_account(answer)
 434                             Kamaki.set_default_cloud(answer)
 435
 436                 if session['account'] is not None:
 437                     session['cloud'] = answer
 438                     Kamaki.set_default_cloud(answer)
 439                     default_item = "Upload"
 440                 else:
 441                     del session['account']
 442                     del session['cloud']
 443         elif choice == "Upload":
 444             if upload_image(session):
 445                 default_item = "Register"
 446             else:
 447                 default_item = "Upload"
 448         elif choice == "Register":
 449             if register_image(session):
 450                 return True
 451             else:
 452                 default_item = "Register"
 453
 454
 455 def add_property(session):
 456     """Add a new property to the image"""
 457     d = session['dialog']
 458
 459     while 1:
 460         (code, answer) = d.inputbox("Please provide a name for a new image"
 461                                     " property:", width=WIDTH)
 462         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 463             return False
 464
 465         name = answer.strip()
 466         if len(name) == 0:
 467             d.msgbox("A property name cannot be empty", width=SMALL_WIDTH)
 468             continue
 469
 470         break
 471
 472     while 1:
 473         (code, answer) = d.inputbox("Please provide a value for image "
 474                                     "property %s" % name, width=WIDTH)
 475         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 476             return False
 477
 478         value = answer.strip()
 479         if len(value) == 0:
 480             d.msgbox("Value cannot be empty", width=SMALL_WIDTH)
 481             continue
 482
 483         break
 484
 485     session['metadata'][name] = value
 486
 487     return True
 488
 489
 490 def modify_properties(session):
 491     """Modify an existing image property"""
 492     d = session['dialog']
 493
 494     while 1:
 495         choices = []
 496         for (key, val) in session['metadata'].items():
 497             choices.append((str(key), str(val)))
 498
 499         (code, choice) = d.menu(
 500             "In this menu you can edit existing image properties or add new "
 501             "ones. Be careful! Most properties have special meaning and "
 502             "alter the image deployment behaviour. Press <HELP> to see more "
 503             "information about image properties. Press <BACK> when done.",
 504             height=18, width=WIDTH, choices=choices, menu_height=10,
 505             ok_label="Edit", extra_button=1, extra_label="Add", cancel="Back",
 506             help_button=1, title="Image Properties")
 507
 508         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 509             return True
 510         # Edit button
 511         elif code == d.DIALOG_OK:
 512             (code, answer) = d.inputbox("Please provide a new value for the "
 513                                         "image property with name `%s':" %
 514                                         choice,
 515                                         init=session['metadata'][choice],
 516                                         width=WIDTH)
 517             if code not in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 518                 value = answer.strip()
 519                 if len(value) == 0:
 520                     d.msgbox("Value cannot be empty!")
 521                     continue
 522                 else:
 523                     session['metadata'][choice] = value
 524         # ADD button
 525         elif code == d.DIALOG_EXTRA:
 526             add_property(session)
 527         elif code == 'help':
 528             help_file = get_help_file("image_properties")
 529             assert os.path.exists(help_file)
 530             d.textbox(help_file, title="Image Properties", width=70, height=40)
 531
 532
 533 def delete_properties(session):
 534     """Delete an image property"""
 535     d = session['dialog']
 536
 537     choices = []
 538     for (key, val) in session['metadata'].items():
 539         choices.append((key, "%s" % val, 0))
 540
 541     (code, to_delete) = d.checklist("Choose which properties to delete:",
 542                                     choices=choices, width=WIDTH)
 543     to_delete = map(lambda x: x.strip('"'), to_delete)  # needed for OpenSUSE
 544
 545     # If the user exits with ESC or CANCEL, the returned tag list is empty.
 546     for i in to_delete:
 547         del session['metadata'][i]
 548
 549     cnt = len(to_delete)
 550     if cnt > 0:
 551         d.msgbox("%d image properties were deleted." % cnt, width=SMALL_WIDTH)
 552         return True
 553     else:
 554         return False
 555
 556
 557 def exclude_tasks(session):
 558     """Exclude specific tasks from running during image deployment"""
 559     d = session['dialog']
 560
 561     index = 0
 562     displayed_index = 1
 563     choices = []
 564     mapping = {}
 565     if 'excluded_tasks' not in session:
 566         session['excluded_tasks'] = []
 567
 568     if -1 in session['excluded_tasks']:
 569         if not d.yesno("Image deployment configuration is disabled. "
 570                        "Do you wish to enable it?", width=SMALL_WIDTH):
 571             session['excluded_tasks'].remove(-1)
 572         else:
 573             return False
 574
 575     for (msg, task, osfamily) in CONFIGURATION_TASKS:
 576         if session['metadata']['OSFAMILY'] in osfamily:
 577             checked = 1 if index in session['excluded_tasks'] else 0
 578             choices.append((str(displayed_index), msg, checked))
 579             mapping[displayed_index] = index
 580             displayed_index += 1
 581         index += 1
 582
 583     while 1:
 584         (code, tags) = d.checklist(
 585             text="Please choose which configuration tasks you would like to "
 586                  "prevent from running during image deployment. "
 587                  "Press <No Config> to supress any configuration. "
 588                  "Press <Help> for more help on the image deployment "
 589                  "configuration tasks.",
 590             choices=choices, height=19, list_height=8, width=WIDTH,
 591             help_button=1, extra_button=1, extra_label="No Config",
 592             title="Exclude Configuration Tasks")
 593         tags = map(lambda x: x.strip('"'), tags)  # Needed for OpenSUSE
 594
 595         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 596             return False
 597         elif code == d.DIALOG_HELP:
 598             help_file = get_help_file("configuration_tasks")
 599             assert os.path.exists(help_file)
 600             d.textbox(help_file, title="Configuration Tasks",
 601                       width=70, height=40)
 602         # No Config button
 603         elif code == d.DIALOG_EXTRA:
 604             session['excluded_tasks'] = [-1]
 605             session['task_metadata'] = ["EXCLUDE_ALL_TASKS"]
 606             break
 607         elif code == d.DIALOG_OK:
 608             session['excluded_tasks'] = []
 609             for tag in tags:
 610                 session['excluded_tasks'].append(mapping[int(tag)])
 611
 612             exclude_metadata = []
 613             for task in session['excluded_tasks']:
 614                 exclude_metadata.extend(CONFIGURATION_TASKS[task][1])
 615
 616             session['task_metadata'] = map(lambda x: "EXCLUDE_TASK_%s" % x,
 617                                            exclude_metadata)
 618             break
 619
 620     return True
 621
 622
 623 def sysprep_params(session):
 624     """Collect the needed sysprep parameters"""
 625     d = session['dialog']
 626     image = session['image']
 627
 628     available = image.os.sysprep_params
 629     needed = image.os.needed_sysprep_params
 630     names = needed.keys()
 631
 632     if len(needed) == 0:
 633         return True
 634
 635     fields = []
 636     for name in names:
 637         param = needed[name]
 638         default = available[name] if name in available else ""
 639         fields.append(("%s: " % param.description, default,
 640                        SYSPREP_PARAM_MAXLEN))
 641
 642     txt = "Please provide the following system preparation parameters:"
 643     code, output = d.form(txt, height=13, width=WIDTH, form_height=len(fields),
 644                           fields=fields)
 645
 646     if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 647         return False
 648
 649     for i in range(len(fields)):
 650         param = needed[names[i]]
 651         if param.validator(output[i]):
 652             image.os.sysprep_params[names[i]] = output[i]
 653         else:
 654             d.msgbox("The value you provided for parameter: %s is not valid" %
 655                      names[i], width=SMALL_WIDTH)
 656             return False
 657
 658     return True
 659
 660
 661 def sysprep(session):
 662     """Perform various system preperation tasks on the image"""
 663     d = session['dialog']
 664     image = session['image']
 665
 666     # Is the image already shrinked?
 667     if 'shrinked' in session and session['shrinked']:
 668         msg = "It seems you have shrinked the image. Running system " \
 669               "preparation tasks on a shrinked image is dangerous."
 670
 671         if d.yesno("%s\n\nDo you really want to continue?" % msg,
 672                    width=SMALL_WIDTH, defaultno=1):
 673             return
 674
 675     wrapper = textwrap.TextWrapper(width=WIDTH - 5)
 676
 677     syspreps = image.os.list_syspreps()
 678
 679     if len(syspreps) == 0:
 680         d.msgbox("No system preparation task available to run!",
 681                  title="System Preperation", width=SMALL_WIDTH)
 682         return
 683
 684     while 1:
 685         choices = []
 686         index = 0
 687
 688         help_title = "System Preperation Tasks"
 689         sysprep_help = "%s\n%s\n\n" % (help_title, '=' * len(help_title))
 690
 691         for sysprep in syspreps:
 692             name, descr = image.os.sysprep_info(sysprep)
 693             display_name = name.replace('-', ' ').capitalize()
 694             sysprep_help += "%s\n" % display_name
 695             sysprep_help += "%s\n" % ('-' * len(display_name))
 696             sysprep_help += "%s\n\n" % wrapper.fill(" ".join(descr.split()))
 697             enabled = 1 if sysprep.enabled else 0
 698             choices.append((str(index + 1), display_name, enabled))
 699             index += 1
 700
 701         (code, tags) = d.checklist(
 702             "Please choose which system preparation tasks you would like to "
 703             "run on the image. Press <Help> to see details about the system "
 704             "preparation tasks.", title="Run system preparation tasks",
 705             choices=choices, width=70, ok_label="Run", help_button=1)
 706         tags = map(lambda x: x.strip('"'), tags)  # Needed for OpenSUSE
 707
 708         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 709             return False
 710         elif code == d.DIALOG_HELP:
 711             d.scrollbox(sysprep_help, width=WIDTH)
 712         elif code == d.DIALOG_OK:
 713             # Enable selected syspreps and disable the rest
 714             for i in range(len(syspreps)):
 715                 if str(i + 1) in tags:
 716                     image.os.enable_sysprep(syspreps[i])
 717                 else:
 718                     image.os.disable_sysprep(syspreps[i])
 719
 720             if len([s for s in image.os.list_syspreps() if s.enabled]) == 0:
 721                 d.msgbox("No system preperation task is selected!",
 722                          title="System Preperation", width=SMALL_WIDTH)
 723                 continue
 724
 725             if not sysprep_params(session):
 726                 continue
 727
 728             infobox = InfoBoxOutput(d, "Image Configuration")
 729             try:
 730                 image.out.add(infobox)
 731                 try:
 732                     # The checksum is invalid. We have mounted the image rw
 733                     if 'checksum' in session:
 734                         del session['checksum']
 735
 736                     # Monitor the metadata changes during syspreps
 737                     with MetadataMonitor(session, image.os.meta):
 738                         try:
 739                             image.os.do_sysprep()
 740                             infobox.finalize()
 741                         except FatalError as e:
 742                             title = "System Preparation"
 743                             d.msgbox("System Preparation failed: %s" % e,
 744                                      title=title, width=SMALL_WIDTH)
 745                 finally:
 746                     image.out.remove(infobox)
 747             finally:
 748                 infobox.cleanup()
 749             break
 750     return True
 751
 752
 753 def shrink(session):
 754     """Shrink the image"""
 755     d = session['dialog']
 756     image = session['image']
 757
 758     shrinked = 'shrinked' in session and session['shrinked']
 759
 760     if shrinked:
 761         d.msgbox("The image is already shrinked!", title="Image Shrinking",
 762                  width=SMALL_WIDTH)
 763         return True
 764
 765     msg = "This operation will shrink the last partition of the image to " \
 766           "reduce the total image size. If the last partition is a swap " \
 767           "partition, then this partition is removed and the partition " \
 768           "before that is shrinked. The removed swap partition will be " \
 769           "recreated during image deployment."
 770
 771     if not d.yesno("%s\n\nDo you want to continue?" % msg, width=WIDTH,
 772                    height=12, title="Image Shrinking"):
 773         with MetadataMonitor(session, image.meta):
 774             infobox = InfoBoxOutput(d, "Image Shrinking", height=4)
 775             image.out.add(infobox)
 776             try:
 777                 image.shrink()
 778                 infobox.finalize()
 779             finally:
 780                 image.out.remove(infobox)
 781
 782         session['shrinked'] = True
 783         update_background_title(session)
 784     else:
 785         return False
 786
 787     return True
 788
 789
 790 def customization_menu(session):
 791     """Show image customization menu"""
 792     d = session['dialog']
 793
 794     choices = [("Sysprep", "Run various image preparation tasks"),
 795                ("Shrink", "Shrink image"),
 796                ("View/Modify", "View/Modify image properties"),
 797                ("Delete", "Delete image properties"),
 798                ("Exclude", "Exclude various deployment tasks from running")]
 799
 800     default_item = 0
 801
 802     actions = {"Sysprep": sysprep,
 803                "Shrink": shrink,
 804                "View/Modify": modify_properties,
 805                "Delete": delete_properties,
 806                "Exclude": exclude_tasks}
 807     while 1:
 808         (code, choice) = d.menu(
 809             text="Choose one of the following or press <Back> to exit.",
 810             width=WIDTH, choices=choices, cancel="Back", height=13,
 811             menu_height=len(choices), default_item=choices[default_item][0],
 812             title="Image Customization Menu")
 813
 814         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 815             break
 816         elif choice in actions:
 817             default_item = [entry[0] for entry in choices].index(choice)
 818             if actions[choice](session):
 819                 default_item = (default_item + 1) % len(choices)
 820
 821
 822 def main_menu(session):
 823     """Show the main menu of the program"""
 824     d = session['dialog']
 825
 826     update_background_title(session)
 827
 828     choices = [("Customize", "Customize image & cloud deployment options"),
 829                ("Register", "Register image to a cloud"),
 830                ("Extract", "Dump image to local file system"),
 831                ("Reset", "Reset everything and start over again"),
 832                ("Help", "Get help for using snf-image-creator")]
 833
 834     default_item = "Customize"
 835
 836     actions = {"Customize": customization_menu, "Register": kamaki_menu,
 837                "Extract": extract_image}
 838     while 1:
 839         (code, choice) = d.menu(
 840             text="Choose one of the following or press <Exit> to exit.",
 841             width=WIDTH, choices=choices, cancel="Exit", height=13,
 842             default_item=default_item, menu_height=len(choices),
 843             title="Image Creator for synnefo (snf-image-creator version %s)" %
 844                   version)
 845
 846         if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
 847             if confirm_exit(d):
 848                 break
 849         elif choice == "Reset":
 850             if confirm_reset(d):
 851                 d.infobox("Resetting snf-image-creator. Please wait ...",
 852                           width=SMALL_WIDTH)
 853                 raise Reset
 854         elif choice == "Help":
 855             d.msgbox("For help, check the online documentation:\n\nhttp://www"
 856                      ".synnefo.org/docs/snf-image-creator/latest/",
 857                      width=WIDTH, title="Help")
 858         elif choice in actions:
 859             actions[choice](session)
 860
 861 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :