1 # -*- coding: utf-8 -*-
3 # Copyright 2012 GRNET S.A. All rights reserved.
5 # Redistribution and use in source and binary forms, with or
6 # without modification, are permitted provided that the following
9 # 1. Redistributions of source code must retain the above
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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.
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19 # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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34 # or implied, of GRNET S.A.
36 """Module providing useful functions for the dialog-based version of
42 from image_creator.output.dialog import GaugeOutput
43 from image_creator.util import MD5
44 from image_creator.kamaki_wrapper import Kamaki
50 def update_background_title(session):
51 """Update the backgroud title of the dialog page"""
53 disk = session['disk']
54 image = session['image']
58 size = (image.size + MB - 1) // MB
59 shrinked = 'shrinked' in session and session['shrinked']
60 postfix = " (shrinked)" if shrinked else ''
62 title = "OS: %s, Distro: %s, Size: %dMB%s, Source: %s" % \
63 (image.ostype, image.distro, size, postfix,
64 os.path.abspath(disk.source))
66 d.setBackgroundTitle(title)
69 def confirm_exit(d, msg=''):
70 """Ask the user to confirm when exiting the program"""
71 return not d.yesno("%s Do you want to exit?" % msg, width=SMALL_WIDTH)
75 """Ask the user to confirm a reset action"""
76 return not d.yesno("Are you sure you want to reset everything?",
77 width=SMALL_WIDTH, defaultno=1)
80 class Reset(Exception):
81 """Exception used to reset the program"""
85 def extract_metadata_string(session):
86 """Convert image metadata to text"""
87 metadata = ['%s=%s' % (k, v) for (k, v) in session['metadata'].items()]
89 if 'task_metadata' in session:
90 metadata.extend("%s=yes" % m for m in session['task_metadata'])
92 return '\n'.join(metadata) + '\n'
95 def extract_image(session):
96 """Dump the image to a local file"""
100 if dir and dir[-1] != os.sep:
103 (code, path) = d.fselect(dir, 10, 50, title="Save image as...")
104 if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
107 if os.path.isdir(path):
111 if os.path.isdir("%s.meta" % path):
112 d.msgbox("Can't overwrite directory `%s.meta'" % path,
116 if os.path.isdir("%s.md5sum" % path):
117 d.msgbox("Can't overwrite directory `%s.md5sum'" % path,
121 basedir = os.path.dirname(path)
122 name = os.path.basename(path)
123 if not os.path.exists(basedir):
124 d.msgbox("Directory `%s' does not exist" % basedir,
132 files = ["%s%s" % (path, ext) for ext in ('', '.meta', '.md5sum')]
133 overwrite = filter(os.path.exists, files)
135 if len(overwrite) > 0:
136 if d.yesno("The following file(s) exist:\n"
137 "%s\nDo you want to overwrite them?" %
138 "\n".join(overwrite), width=SMALL_WIDTH):
141 gauge = GaugeOutput(d, "Image Extraction", "Extracting image...")
143 image = session['image']
147 if "checksum" not in session:
149 session['checksum'] = md5.compute(image.device, image.size)
154 # Extract metadata file
155 out.output("Extracting metadata file ...")
156 with open('%s.meta' % path, 'w') as f:
157 f.write(extract_metadata_string(session))
160 # Extract md5sum file
161 out.output("Extracting md5sum file ...")
162 md5str = "%s %s\n" % (session['checksum'], name)
163 with open('%s.md5sum' % path, 'w') as f:
170 d.msgbox("Image file `%s' was successfully extracted!" % path,
177 def _check_cloud(session, name, description, url, token):
178 """Checks if the provided info for a cloud are valid"""
179 d = session['dialog']
180 regexp = re.compile('^[a-zA-Z0-9_]+$')
182 if not re.match(regexp, name):
183 d.msgbox("Allowed characters for name: [a-zA-Z0-9_]", width=WIDTH)
187 d.msgbox("Url cannot be empty!", width=WIDTH)
191 d.msgbox("Token cannot be empty!", width=WIDTH)
194 if Kamaki.create_account(url, token) is None:
195 d.msgbox("The cloud info you provided is not valid. Please check the "
196 "Authentication URL and the token values again!", width=WIDTH)
202 def add_cloud(session):
203 """Add a new cloud account"""
205 d = session['dialog']
215 ("Description (optional): ", description, 80),
216 ("Authentication URL: ", url, 200),
217 ("Token:", token, 100)]
219 (code, output) = d.form("Add a new cloud account:", height=13,
220 width=WIDTH, form_height=4, fields=fields)
222 if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
225 name, description, url, token = output
228 description = description.strip()
230 token = token.strip()
232 if _check_cloud(session, name, description, url, token):
233 if name in Kamaki.get_clouds().keys():
234 d.msgbox("A cloud with name `%s' already exists. If you want "
235 "to edit the existing cloud account, use the edit "
236 "menu." % name, width=WIDTH)
238 Kamaki.save_cloud(name, url, token, description)
246 def edit_cloud(session, name):
247 """Edit a cloud account"""
249 info = Kamaki.get_cloud_by_name(name)
251 assert info, "Cloud: `%s' does not exist" % name
252 assert 'url' in info, "Cloud: `%s' does not have a url attr" % name
253 assert 'token' in info, "Cloud: `%s' does not have a token attr" % name
255 description = info['description'] if 'description' in info else ""
257 token = info['token']
259 d = session['dialog']
263 ("Description (optional): ", description, 80),
264 ("Authentication URL: ", url, 200),
265 ("Token:", token, 100)]
267 (code, output) = d.form("Edit cloud account: `%s'" % name, height=13,
268 width=WIDTH, form_height=3, fields=fields)
270 if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
273 description, url, token = output
275 description = description.strip()
277 token = token.strip()
279 if _check_cloud(session, name, description, url, token):
280 Kamaki.save_cloud(name, url, token, description)
287 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :