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#!/usr/bin/env python
# Software License Agreement (BSD License)
#
# Copyright (c) 2009, Eucalyptus Systems, Inc.
# All rights reserved.
#
# Redistribution and use of this software in source and binary forms, with or
# without modification, are permitted provided that the following conditions
# are met:
#
# Redistributions of source code must retain the above
# copyright notice, this list of conditions and the
# following disclaimer.
#
# Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the
# following disclaimer in the documentation and/or other
# materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# Author: Neil Soman neil@eucalyptus.com
import getopt, sys, os
from xml.dom import minidom
from euca2ools import Euca2ool, FileValidationError, Util
from boto.exception import S3ResponseError
from boto.s3 import Connection
from boto.s3.key import Key
usage_string = """
Downloads a bundled image from a bucket.
euca-download-bundle -b, --bucket bucket [-m, --manifest manifest_path] [-d, --directory directory]
[-h, --help] [--version] [--debug]
REQUIRED PARAMETERS
-b, --bucket The name of the bucket to download to. Bucket will be created if it does not exist.
OPTIONAL PARAMETERS
-m, --manifest_path The path to the manifest file.
-d, --directory The name of the directory to download the bundled parts to.
"""
version_string = """ euca-download-bundle version: 1.0 (BSD)"""
def usage():
print usage_string
Util().usage()
def version():
print version_string
sys.exit()
def ensure_bucket(connection, bucket):
bucket_instance = None
try:
bucket_instance = connection.get_bucket(bucket)
except S3ResponseError, s3error:
print 'Unable to get bucket %s' % (bucket)
sys.exit()
return bucket_instance
def get_parts(manifest_filename):
parts = []
dom = minidom.parse(manifest_filename)
manifest_elem = dom.getElementsByTagName('manifest')[0]
parts_list = manifest_elem.getElementsByTagName('filename')
for part_elem in parts_list:
nodes = part_elem.childNodes
for node in nodes:
if node.nodeType == node.TEXT_NODE:
parts.append(node.data)
return parts
def get_relative_filename(filename):
f_parts = filename.split('/')
return f_parts[len(f_parts) - 1]
def get_manifests(bucket):
manifests = []
keys = bucket.get_all_keys()
for k in keys:
if k.name:
if(k.name.find('manifest') >= 0):
manifests.append(k.name)
return manifests
def download_manifests(bucket, manifests, directory):
if (len(manifests) > 0):
if not os.path.exists(directory):
os.makedirs(directory)
for manifest in manifests:
k = Key(bucket)
k.key = manifest
print "Downloading", manifest
manifest_file = open(os.path.join(directory, manifest), "wb")
k.get_contents_to_file(manifest_file)
manifest_file.close()
def download_parts(bucket, manifests, directory):
for manifest in manifests:
manifest_filename = os.path.join(directory, manifest)
parts = get_parts(manifest_filename)
for part in parts:
k = Key(bucket)
k.key = part
print "Downloading", part
part_file = open(os.path.join(directory, part), "wb")
k.get_contents_to_file(part_file)
part_file.close()
def main():
euca = None
try:
euca = Euca2ool('b:m:d:',
['bucket=', 'manifest=', 'directory='],
is_s3=True)
except Exception, e:
print e
usage()
bucket=None
manifest_path = None
directory = '/tmp'
for name, value in euca.opts:
if name in ('-h', '--help'):
usage()
elif name in ('-d', '--directory'):
directory = value
elif name in ('-b', '--bucket'):
bucket = value
elif name in ('-m', '--manifest'):
manifest_path = value
if bucket:
if manifest_path:
try:
euca.validate_file(manifest_path)
except FileValidationError:
print 'Invalid manifest', manifest_path
sys.exit(1)
conn = euca.make_connection()
bucket_instance = ensure_bucket(conn, bucket)
manifests = get_manifests(bucket_instance)
download_manifests(bucket_instance, manifests, directory)
download_parts(bucket_instance, manifests, directory)
else:
print 'bucket must be specified.'
usage()
if __name__ == "__main__":
main()
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