Class: Yast::InstExtensionImageClass

Inherits:
Module
  • Object
show all
Defined in:
library/control/src/modules/InstExtensionImage.rb

Instance Method Summary collapse

Instance Method Details

#CutLastDirOrFile(url) ⇒ Object

Removes the last url item.

Examples:

CutLastDirOrFile ("http://server/some/dir/") -> "http://server/some/"
CutLastDirOrFile ("http://server/some/dir")  -> "http://server/some/"


211
212
213
214
215
216
217
218
219
220
221
222
# File 'library/control/src/modules/InstExtensionImage.rb', line 211

def CutLastDirOrFile(url)
  if url.nil? || url == "" || url == "/" ||
      !Builtins.regexpmatch(url, "/")
    Builtins.y2error(-1, "Wrong URL: %1", url)
    return ""
  end

  # final "/" is needed for regexp
  url = Ops.add(url, "/") if !Builtins.regexpmatch(url, "/$")

  Builtins.regexpsub(url, "^(.*)/[^/]+/$", "\\1/")
end

#DesintegrateExtension(_extension) ⇒ Object



435
436
437
438
# File 'library/control/src/modules/InstExtensionImage.rb', line 435

def DesintegrateExtension(_extension)
  Builtins.y2warning("Function is empty, see BNC #376870")
  true
end

#DisintegrateAllExtensionsObject



440
441
442
443
# File 'library/control/src/modules/InstExtensionImage.rb', line 440

def DisintegrateAllExtensions
  Builtins.y2warning("Function is empty, see BNC #376870")
  true
end

#DownloadAndIntegrateExtension(extension) ⇒ Object



431
432
433
# File 'library/control/src/modules/InstExtensionImage.rb', line 431

def DownloadAndIntegrateExtension(extension)
  LoadExtension(extension, "")
end

#IsURLRelative(url) ⇒ Object



146
147
148
149
150
151
152
153
# File 'library/control/src/modules/InstExtensionImage.rb', line 146

def IsURLRelative(url)
  return nil if url.nil?

  # "http://..." -> not-relative
  # "cd:/" -> not relative
  # "boot/i386/root -> relative
  !Builtins.regexpmatch(url, "^[[:alpha:]]+:/")
end

#LazyInitObject

Every global function should call LazyInit in the beginning.



276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
# File 'library/control/src/modules/InstExtensionImage.rb', line 276

def LazyInit
  # already initialized
  return if @initialized

  Builtins.y2milestone("Initializing...")
  @initialized = true

  # base repo URL
  repo_url = Linuxrc.InstallInf("RepoURL")
  # inst-sys URL
  inst_sys_url = Linuxrc.InstallInf("InstsysURL")

  # non-relative inst-sys, repo is not taken into account
  repo_url = "" if !IsURLRelative(inst_sys_url)

  # final base URL (last file/dir already removed)
  @base_url = MergeURLs(repo_url, inst_sys_url)
  Builtins.y2milestone("Base URL: %1", @base_url)

  # final params
  @base_url_params = MergeURLsParams(repo_url, inst_sys_url)
  Builtins.y2milestone("Base URL params: %1", @base_url_params)

  run = Convert.to_map(
    WFM.Execute(
      path(".local.bash_output"),
      Builtins.sformat("/bin/mkdir -p '%1'", String.Quote(@base_tmpdir))
    )
  )
  if Ops.get_integer(run, "exit", -1) != 0
    Builtins.y2error(
      "Cannot create temporary directory: %1: %2",
      @base_tmpdir,
      run
    )
  end

  run = Convert.to_map(
    WFM.Execute(
      path(".local.bash_output"),
      Builtins.sformat("/bin/mkdir -p '%1'", String.Quote(@base_mounts))
    )
  )
  if Ops.get_integer(run, "exit", -1) != 0
    Builtins.y2error(
      "Cannot create mounts directory: %1: %2",
      @base_mounts,
      run
    )
  end

  nil
end

#LoadExtension(package, message) ⇒ Object

Load a rpm package from the media into the inst-sys the package is expected in the /boot// directory of the media

Parameters:

  • package (String)

    The path to package to be loaded (by default,

  • message (String)

    The message to be shown in the progress popup



358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
# File 'library/control/src/modules/InstExtensionImage.rb', line 358

def LoadExtension(package, message)
  Builtins.y2error("This module should be used in Stage::initial only!") if !Stage.initial

  if package.nil? || package == ""
    Builtins.y2error("Such package name can't work: %1", package)
    return false
  end

  if Builtins.contains(@integrated_extensions, package)
    Builtins.y2milestone("Package %1 has already been integrated", package)
    return true
  end

  Popup.ShowFeedback("", message) if message != "" && !message.nil?

  # See BNC #376870
  cmd = Builtins.sformat("/bin/extend '%1'", String.Quote(package))
  Builtins.y2milestone("Calling: %1", cmd)
  cmd_out = Convert.to_map(WFM.Execute(path(".local.bash_output"), cmd))
  Builtins.y2milestone("Returned: %1", cmd_out)

  ret = true
  if Ops.get_integer(cmd_out, "exit", -1) == 0
    @integrated_extensions = Builtins.add(@integrated_extensions, package)
  else
    Builtins.y2error("'extend' failed!")
    ret = false
  end

  Popup.ClearFeedback if message != "" && !message.nil?

  ret
end

#mainObject



39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
# File 'library/control/src/modules/InstExtensionImage.rb', line 39

def main
  textdomain "base"

  Yast.import "Linuxrc"
  Yast.import "URL"
  Yast.import "String"
  Yast.import "Directory"
  Yast.import "Popup"
  Yast.import "Stage"

  # **
  #
  # Paths where to download inst-sys extension images are taken
  # from '/etc/install.inf'. An extension image contains the
  # directory structure and files as it was in inst-sys but
  # it is a squashfs image of it.
  #
  # Inst-sys URL might be absolute or 'relative' to repo URL,
  # but only if instsys=... parameter wasn't explicitely defined.
  #
  #   When instsys=... parameter _is not_ used:
  #     * RepoURL: cd:/?device=sr0
  #     * InstsysURL: boot/<arch>/root
  #       (<arch> is for instance "i386", "x86_64", "ppc")
  #     or
  #     * RepoURL: nfs://server/repo/url/?device=eth0
  #     * InstsysURL: boot/<arch>/root
  #
  #   When instsys=... parameter _is_ used:
  #     * RepoURL: nfs://server/repo/url/
  #     * InstsysURL: http://server/inst-sys/url/
  #     or
  #     * RepoURL: cd:/?device=sr0
  #     * InstsysURL: nfs://server/inst-sys/url/?device=eth0
  #
  # Files to download are in the same level (directory) with
  # inst-sys:
  #
  #   * RepoURL: cd:/?device=sr0
  #   * InstsysURL: boot/<arch>/root
  #   -> cd:/boot/<arch>/$extension_file
  #
  #   * RepoURL: nfs://server/repo/url/?device=eth0
  #   * InstsysURL: http://server/inst-sys/url/?device=eth0
  #   -> http://server/inst-sys/$extension_file?device=eth0
  #
  # These files are always squashfs images that need to be:
  #
  #   * Downloaded: /lbin/wget -v $url $local_filename_path
  #   * Downloaded file needs to be checked against a SHA1
  #     hash defined in /content file
  #   * Mounted (-o loop) to a directory.
  #   * Directory needs to be merged into inst-sys by using
  #     `/lbin/lndir <image_mountpoint> /`
  #
  # This module remembers downloading a file so it does not
  # download any file twice.
  #
  # Additional comments on the "Installation Workflow":
  #
  #   * When Linuxrc starts loading an initial translation
  #     might already been selected. Linuxrc will download
  #     and merge the pre-selected translation itself.
  #   * Then Linuxrc starts YaST. YaST initializes itself
  #     including translations and displays the language
  #     dialog translated.
  #   * After a different language is selected, YaST downloads
  #     a localization inst-sys extension and merges it.
  #   * Then a different locale is selected and YaST redraws
  #     reruns the current YCP client.

  # nfs://.../, cd:/, http://.../any/
  # always ends with a slash "/"
  @base_url = ""

  # if there are any params $url?param1=xx&param2=...
  # always only params
  @base_url_params = ""

  # Directory used for storing images
  @base_tmpdir = Builtins.sformat(
    "%1/%2/",
    Directory.tmpdir,
    "instsys_extensions"
  )
  # Directory used for mounting images
  @base_mounts = Builtins.sformat(
    "%1/%2/",
    Directory.tmpdir,
    "instsys_extmounts"
  )

  @initialized = false

  # Already downloaded (and mounted and merged) files
  @already_downloaded_files = []

  # All integrated extensions
  @integrated_extensions = []

  # $["extension_name" : "mounted_as_directory", ...]
  @extensions_mounted_as = {}

  # $["extension_name" : "downloaded_to_file", ...]
  @extension_downloaded_as = {}
end

#MergeURLs(url_base, url_with_modifs) ⇒ String

Merges two URLs into one and removes parameters from both. If the second URL is strictly relative, e.g., "boot/i386/root", it is merged with the first one, otherwise the second one is returned (with params cut).

Examples:

MergeURLs (
  "nfs://server.name/11-repo/?device=eth0&xxx=zzz",
  "boot/i386/root?device=eth1&aaa=bbb"
) -> "nfs://server.name/11-repo/boot/i386/"
MergeURLs (
  "nfs://server.name/11-repo/?device=eth0&xxx=zzz",
  "nfs://server2.net/boot/i386/root?device=eth1&aaa=bbb"
) -> "nfs://server2.net/boot/i386/"

Parameters:

  • url_base (String)

    URL

  • url_with_modifs (String)

    URL (relative or absolute)

Returns:



242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
# File 'library/control/src/modules/InstExtensionImage.rb', line 242

def MergeURLs(url_base, url_with_modifs)
  if url_base.nil? || url_with_modifs.nil?
    Builtins.y2error("Wrong URLs: %1 or %2", url_base, url_with_modifs)
    return nil
  end

  # relative (to base URL) or absolute URL
  url_with_modifs_pos = Builtins.search(url_with_modifs, "?")
  url_with_modifs_onlyurl = url_with_modifs

  if !url_with_modifs_pos.nil? &&
      Ops.greater_or_equal(url_with_modifs_pos, 0)
    url_with_modifs_onlyurl = Builtins.substring(
      url_with_modifs,
      0,
      url_with_modifs_pos
    )
  end

  # Modif URL is not relative, not using the base URL at all
  return CutLastDirOrFile(url_with_modifs_onlyurl) if !IsURLRelative(url_with_modifs_onlyurl)

  # base URL
  url_base_pos = Builtins.search(url_base, "?")
  url_base_onlyurl = url_base

  url_base_onlyurl = Builtins.substring(url_base, 0, url_base_pos) if !url_base_pos.nil? && Ops.greater_or_equal(url_base_pos, 0)

  url_base_onlyurl = Ops.add(url_base_onlyurl, "/") if !Builtins.regexpmatch(url_base_onlyurl, "/$")

  CutLastDirOrFile(Ops.add(url_base_onlyurl, url_with_modifs_onlyurl))
end

#MergeURLsParams(base_url, url_with_modifs) ⇒ String

Merges two different URLs, repspectively their parameters to one string with parameters. See the example.

Examples:

MergeURLsParams (
  "http://server.net/dir/?param1=x&param2=y",
  "http://server.net/dir/?param2=z&param3=a",
// param2 from the first URL has been replaced by tho one from the second URL
) -> "param1=x&param2=z&param3=a"

Parameters:

  • base_url (String)

    URL with params

  • url_with_modifs (String)

    URL with modifications (added or changed params)

Returns:



168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
# File 'library/control/src/modules/InstExtensionImage.rb', line 168

def MergeURLsParams(base_url, url_with_modifs)
  if base_url.nil? || url_with_modifs.nil?
    Builtins.y2error("Wrong params: %1 or %2", base_url, url_with_modifs)
    return nil
  end

  # base URL params
  base_params_pos = Builtins.search(base_url, "?")
  base_params = ""

  base_params = Builtins.substring(base_url, Ops.add(base_params_pos, 1)) if !base_params_pos.nil? && Ops.greater_or_equal(base_params_pos, 0)

  # URL params with modifications
  modif_params_pos = Builtins.search(url_with_modifs, "?")
  modif_params = ""

  if !modif_params_pos.nil? && Ops.greater_or_equal(modif_params_pos, 0)
    modif_params = Builtins.substring(
      url_with_modifs,
      Ops.add(modif_params_pos, 1)
    )
  end

  # Nothing to merge
  return modif_params if base_params == ""
  return base_params if modif_params == ""

  base_params_map = URL.MakeMapFromParams(base_params)
  modif_params_map = URL.MakeMapFromParams(modif_params)
  final_params_map = Convert.convert(
    Builtins.union(base_params_map, modif_params_map),
    from: "map",
    to:   "map <string, string>"
  )

  URL.MakeParamsFromMap(final_params_map)
end

#UnLoadExtension(package, message) ⇒ Object

Remove given package from the inst-sys the package is expected in the /boot// directory of the media

Parameters:

  • package (String)

    The path to package to be unloaded (by default,

  • message (String)

    The message to be shown in the progress popup



396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
# File 'library/control/src/modules/InstExtensionImage.rb', line 396

def UnLoadExtension(package, message)
  Builtins.y2error("This module should be used in Stage::initial only!") if !Stage.initial

  if package.nil? || package == ""
    Builtins.y2error("Such package name can't work: %1", package)
    return false
  end

  if !Builtins.contains(@integrated_extensions, package)
    Builtins.y2milestone("Package %1 wasn't integrated", package)
    return true
  end

  Popup.ShowFeedback("", message) if message != "" && !message.nil?

  cmd = Builtins.sformat("/bin/extend -r '%1'", String.Quote(package))
  Builtins.y2milestone("Calling: %1", cmd)
  cmd_out = Convert.to_map(WFM.Execute(path(".local.bash_output"), cmd))
  Builtins.y2milestone("Returned: %1", cmd_out)

  ret = true
  if Ops.get_integer(cmd_out, "exit", -1) == 0
    @integrated_extensions = Builtins.filter(@integrated_extensions) do |p|
      p != package
    end
  else
    Builtins.y2error("'extend' failed!")
    ret = false
  end

  Popup.ClearFeedback if message != "" && !message.nil?

  ret
end

#with_extension(package) { ... } ⇒ Object

Load a rpm package from the media into the inst-sys and ensure its unloading after end of block.

Examples:

InstExtensionImage.with_extension("snapper") do
   WFM.Execute(path(".local.bash"), "snapper magic")
end

Parameters:

  • package (String)

    to load

Yields:

  • context when extension is available

Raises:

  • (RuntimeError)

    when package loading failed



341
342
343
344
345
346
347
348
349
350
351
352
# File 'library/control/src/modules/InstExtensionImage.rb', line 341

def with_extension(package, &block)
  loading_msg = format(_("Loading to memory package '%s'"), package)
  res = LoadExtension(package, loading_msg)
  raise "Failed to load package. Please check logs." unless res

  begin
    block.call
  ensure
    unloading_msg = format(_("Removing from memory package '%s'"), package)
    UnLoadExtension(package, unloading_msg)
  end
end