/usr/share/pyshared/archipelagentvmcasting/appliancecompresser.py is in archipel-agent-vmcasting 0.6.0-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 | # -*- coding: utf-8 -*-
#
# appliancecompresser.py
#
# Copyright (C) 2010 Antoine Mercadal <antoine.mercadal@inframonde.eu>
# Copyright, 2011 - Franck Villaume <franck.villaume@trivialdev.com>
# This file is part of ArchipelProject
# http://archipelproject.org
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import gzip
import os
import shutil
import tarfile
import tempfile
from threading import Thread
class TNApplianceCompresser (Thread):
def __init__(self, name, paths, xml_definition, xml_snapshots, working_dir, vm_dir, hypervisor_repo_path, success_callback, error_callback, entity, should_gzip):
"""
Initialize a TNApplianceCompresser.
@type name: string
@param name: the name of the package
@type paths: array
@param paths: the paths of things to compress
@type xml_definition: xmpp.Node
@param xml_definition: the XML description of virtual machine
@type xml_snapshots: xmpp.Node
@param xml_snapshots: the XML description of snapshot
@type working_dir: string
@param working_dir: the path of the working dir
@type vm_dir: string
@param vm_dir: the path of the vm folder
@type hypervisor_repo_path: string
@param hypervisor_repo_path: the path for the hypervisor repository
@type success_callback: function
@param success_callback: called when compression is done
@type error_callback: function
@param error_callback: called if any error occurs
@type entity: TNArchipelEntity
@param entity: The requester virtual machine
@type should_gzip: Boolean
@param should_gzip: if set to False, TNApplianceCompresser will not gzip drives (faster but bigger)
"""
Thread.__init__(self)
self.name = name.replace(" ", "_").replace("/", "_").replace("\\", "_").replace("..", "_")
self.paths = paths
self.success_callback = success_callback
self.error_callback = error_callback
self.xml_definition = xml_definition
self.xml_snapshots = xml_snapshots
self.vm_dir = vm_dir
self.working_dir = tempfile.mkdtemp(dir=working_dir)
self.hypervisor_repo_path = hypervisor_repo_path
self.entity = entity
self.should_gzip = should_gzip
self.entity.log.debug("TNApplianceCompresser: working temp dir is: %s" % self.working_dir)
def run(self):
"""
run the thread
"""
try:
self.entity.log.info("TNApplianceCompresser: packaging appliance %s" % self.name)
self.entity.log.info("TNApplianceCompresser: creating tar file at : %s/%s.xvm2" % (self.working_dir, self.name))
tar_file = self.working_dir + "/" + self.name + ".xvm2"
tar = tarfile.open(tar_file, "w")
self.xml_definition.getTag("description").setData("")
definitionXML = str(self.xml_definition).replace('xmlns="http://www.gajim.org/xmlns/undeclared" ', '')
self.entity.log.info("TNApplianceCompresser: writing definion at path %s/description.xml" % self.working_dir)
f = open(self.working_dir + "/description.xml", 'w')
f.write(definitionXML)
f.close()
tar.add(self.working_dir + "/description.xml", "/description.xml")
os.unlink(self.working_dir + "/description.xml")
for i, snapshot in enumerate(self.xml_snapshots):
snapshotXML = str(snapshot).replace('xmlns="http://www.gajim.org/xmlns/undeclared" ', '')
descName = "/snapshot-%d.xml" % i
descPath = "%s/%s" % (self.working_dir, descName)
f = open(descPath, 'w')
f.write(snapshotXML)
f.close()
tar.add(descPath, descName)
os.unlink(descPath)
drives_paths = []
for path in self.paths:
if not os.path.exists(path):
self.entity.log.warning("TNApplianceCompresser: path %s is in description but is not found. ignored" % path)
continue
self.entity.log.info("TNApplianceCompresser: zipping file %s" % path)
if self.should_gzip:
drive_path = self.compress_disk(path)
else:
drive_path = path
definitionXML = definitionXML.replace(path, drive_path.split('/')[-1])
drives_paths.append(drive_path)
self.entity.log.info("TNApplianceCompresser: file zipped %s" % drive_path)
for drive_path in drives_paths:
self.entity.log.info("TNApplianceCompresser: adding to tar file %s" % drive_path)
tar.add(drive_path, "/" + drive_path.split("/")[-1])
if self.should_gzip:
os.unlink(drive_path)
tar.close()
self.entity.log.info("TNApplianceCompresser: moving the tar file %s to repo %s" % (tar_file, self.hypervisor_repo_path))
shutil.move(tar_file, self.hypervisor_repo_path)
self.entity.log.info("TNApplianceCompresser: cleaning the working temp dir")
shutil.rmtree(self.working_dir)
self.success_callback()
except Exception as ex:
self.entity.log.error("TNApplianceCompresser: error occured while packaging: %s" % str(ex))
shutil.rmtree(self.working_dir)
self.error_callback(ex)
def compress_disk(self, path):
"""
Perform compression of disk.
@type path: string
@param path: the relative disk path
@rtype: string
@return: zipped disk path
"""
zip_path = self.working_dir + "/" + path.split("/")[-1] + ".gz"
f_in = open(path, 'rb')
f_out = gzip.open(zip_path, 'wb')
f_out.writelines(f_in)
f_out.close()
f_in.close()
return zip_path
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