Fabio Erculiani
308 lines
10 KiB
Python
308 lines
10 KiB
Python
# -*- coding: utf-8 -*-
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# Molecule Disc Image builder for Sabayon Linux
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# Copyright (C) 2009 Fabio Erculiani
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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import os
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import shutil
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from molecule.i18n import _
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from molecule.output import blue, darkred
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from molecule.specs.skel import GenericExecutionStep, GenericSpec
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from molecule.specs.plugins.builtin_plugin import BuiltinHandlerMixin
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from molecule.specs.plugins.remaster_plugin import IsoUnpackHandler, \
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ChrootHandler
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import molecule.utils
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SUPPORTED_COMPRESSION_METHODS = ["bz2", "gz"]
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class TarHandler(GenericExecutionStep, BuiltinHandlerMixin):
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_TAR_EXEC = "/bin/tar"
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_TAR_COMP_METHODS = {
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"gz": "z",
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"bz2": "j",
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}
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MD5_EXT = ".md5"
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def __init__(self, *args, **kwargs):
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GenericExecutionStep.__init__(self, *args, **kwargs)
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def _get_tar_comp_method(self):
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comp_method = self.metadata.get('compression_method', "gz")
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return TarHandler._TAR_COMP_METHODS[comp_method]
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def setup(self):
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# setup compression method, default is gz
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tar_name = self.metadata.get('tar_name',
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os.path.basename(self.metadata['source_iso']) + ".tar." + \
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self.metadata.get('compression_method', "gz"))
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self.dest_path = os.path.join(
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self.metadata['destination_tar_directory'], tar_name)
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self.chroot_path = self.metadata['chroot_unpack_path']
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return 0
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def pre_run(self):
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self._output.output("[%s|%s] %s" % (
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blue("TarHandler"), darkred(self.spec_name),
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_("executing pre_run"),
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)
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)
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# run pre tar script
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exec_script = self.metadata.get('pre_tar_script')
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if exec_script:
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env = os.environ.copy()
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env['CHROOT_DIR'] = self.chroot_path
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env['TAR_PATH'] = self.dest_path
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env['TAR_CHECKSUM_PATH'] = self.dest_path + \
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TarHandler.MD5_EXT
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self._output.output("[%s|%s] %s: %s" % (
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blue("TarHandler"), darkred(self.spec_name),
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_("spawning"), " ".join(exec_script),
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)
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)
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rc = molecule.utils.exec_cmd(exec_script, env = env)
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if rc != 0:
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self._output.output("[%s|%s] %s: %s" % (
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blue("TarHandler"), darkred(self.spec_name),
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_("pre tar hook failed"), rc,
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)
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)
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return rc
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return 0
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def run(self):
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self._output.output("[%s|%s] %s => %s" % (
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blue("TarHandler"), darkred(self.spec_name),
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_("compressing chroot"),
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self.chroot_path,
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)
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)
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dest_path_dir = os.path.dirname(self.dest_path)
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if not os.path.isdir(dest_path_dir) and not \
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os.path.lexists(dest_path_dir):
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os.makedirs(dest_path_dir, 0o755)
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current_dir = os.getcwd()
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# change dir to chroot dir
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os.chdir(self.chroot_path)
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args = (TarHandler._TAR_EXEC, "cfp" + self._get_tar_comp_method(),
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self.dest_path, ".", "--atime-preserve", "--numeric-owner")
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rc = molecule.utils.exec_cmd(args)
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os.chdir(current_dir)
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if rc != 0:
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self._output.output("[%s|%s] %s: %s" % (
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blue("TarHandler"), darkred(self.spec_name),
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_("chroot compression failed"), rc,
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)
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)
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return rc
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self._output.output("[%s|%s] %s: %s" % (
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blue("TarHandler"), darkred(self.spec_name),
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_("generating md5 for"), self.dest_path,
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)
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)
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digest = molecule.utils.md5sum(self.dest_path)
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md5file = self.dest_path + TarHandler.MD5_EXT
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with open(md5file, "w") as f:
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f.write("%s %s\n" % (digest, os.path.basename(self.dest_path),))
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f.flush()
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return 0
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def post_run(self):
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self._output.output("[%s|%s] %s" % (
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blue("TarHandler"), darkred(self.spec_name),
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_("executing post_run"),
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)
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)
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# run post tar script
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exec_script = self.metadata.get('post_tar_script')
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if exec_script:
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env = os.environ.copy()
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env['CHROOT_DIR'] = self.chroot_path
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env['TAR_PATH'] = self.dest_path
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env['TAR_CHECKSUM_PATH'] = self.dest_path + \
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TarHandler.MD5_EXT
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self._output.output("[%s|%s] %s: %s" % (
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blue("TarHandler"), darkred(self.spec_name),
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_("spawning"), " ".join(exec_script),
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)
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)
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rc = molecule.utils.exec_cmd(exec_script, env = env)
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if rc != 0:
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self._output.output("[%s|%s] %s: %s" % (
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blue("TarHandler"), darkred(self.spec_name),
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_("post tar hook failed"), rc,
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)
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)
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return rc
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return 0
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def kill(self, success = True):
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if not success:
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self._run_error_script(None, self.chroot_path, None)
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try:
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shutil.rmtree(self.metadata['chroot_tmp_dir'], True)
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except (shutil.Error, OSError,):
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pass
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return 0
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class IsoToTarSpec(GenericSpec):
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PLUGIN_API_VERSION = 0
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@staticmethod
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def execution_strategy():
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return "iso_to_tar"
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def supported_compression_method(self, comp_m):
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return comp_m in SUPPORTED_COMPRESSION_METHODS
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def vital_parameters(self):
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return [
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"source_iso",
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"destination_tar_directory",
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]
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def parser_data_path(self):
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return {
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'execution_strategy': {
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'cb': self.ne_string,
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've': self.ve_string_stripper,
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},
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'prechroot': {
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'cb': self.valid_exec_first_list_item,
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've': self.ve_string_splitter,
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},
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'release_string': {
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'cb': self.ne_string, # validation callback
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've': self.ve_string_stripper, # value extractor
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},
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'release_version': {
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'cb': self.ne_string,
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've': self.ve_string_stripper,
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},
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'release_desc': {
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'cb': self.ne_string,
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've': self.ve_string_stripper,
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},
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'release_file': {
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'cb': self.ne_string,
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've': self.ve_string_stripper,
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},
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'source_iso': {
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'cb': self.valid_path_string,
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've': self.ve_string_stripper,
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},
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'tar_name': {
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'cb': self.ne_string,
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've': self.ve_string_stripper,
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},
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'compression_method': {
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'cb': self.supported_compression_method,
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've': self.ve_string_stripper,
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},
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'error_script': {
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'cb': self.valid_exec_first_list_item,
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've': self.ve_string_splitter,
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},
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'outer_chroot_script': {
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'cb': self.valid_exec_first_list_item,
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've': self.ve_string_splitter,
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},
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'inner_chroot_script': {
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'cb': self.valid_path_string_first_list_item,
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've': self.ve_string_splitter,
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},
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'inner_chroot_script_after': {
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'cb': self.valid_path_string_first_list_item,
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've': self.ve_string_splitter,
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},
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'outer_chroot_script_after': {
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'cb': self.valid_exec_first_list_item,
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've': self.ve_string_splitter,
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},
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'destination_tar_directory': {
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'cb': self.valid_dir,
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've': self.ve_string_stripper,
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},
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'pre_tar_script': {
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'cb': self.valid_exec_first_list_item,
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've': self.ve_string_splitter,
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},
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'post_tar_script': {
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'cb': self.valid_exec_first_list_item,
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've': self.ve_string_splitter,
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},
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'iso_mounter': {
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'cb': self.ne_list,
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've': self.ve_string_splitter,
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},
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'iso_umounter': {
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'cb': self.ne_list,
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've': self.ve_string_splitter,
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},
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'squash_mounter': {
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'cb': self.ne_list,
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've': self.ve_string_splitter,
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},
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'squash_umounter': {
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'cb': self.ne_list,
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've': self.ve_string_splitter,
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},
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'custom_packages_remove_cmd': {
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'cb': self.valid_ascii,
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've': self.ve_string_stripper,
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},
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'custom_packages_add_cmd': {
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'cb': self.valid_ascii,
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've': self.ve_string_stripper,
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},
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'packages_to_remove': {
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'cb': self.ne_list,
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've': self.valid_comma_sep_list,
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},
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'packages_to_add': {
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'cb': self.ne_list,
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've': self.valid_comma_sep_list,
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},
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'repositories_update_cmd': {
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'cb': self.ne_list,
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've': self.ve_string_splitter,
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},
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'execute_repositories_update': {
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'cb': self.valid_ascii,
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've': self.ve_string_stripper,
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},
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'paths_to_remove': {
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'cb': self.ne_list,
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've': self.valid_path_list,
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},
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'paths_to_empty': {
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'cb': self.ne_list,
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've': self.valid_path_list,
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},
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}
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def get_execution_steps(self):
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return [IsoUnpackHandler, ChrootHandler, TarHandler]
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