74 lines
2.4 KiB
Python
74 lines
2.4 KiB
Python
# vi: ts=4 expandtab
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#
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# Copyright (C) 2011 Canonical Ltd.
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#
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# Author: Scott Moser <scott.moser@canonical.com>
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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 version 3, as
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# published by the Free Software Foundation.
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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, see <http://www.gnu.org/licenses/>.
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##
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## The purpose of this script is to allow cloud-init to consume
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## rightscale style userdata. rightscale user data is key-value pairs
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## in a url-query-string like format.
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##
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## for cloud-init support, there will be a key named
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## 'CLOUD_INIT_REMOTE_HOOK'.
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##
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## This cloud-config module will
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## - read the blob of data from raw user data, and parse it as key/value
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## - for each key that is found, download the content to
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## the local instance/scripts directory and set them executable.
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## - the files in that directory will be run by the user-scripts module
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## Therefore, this must run before that.
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##
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##
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import cloudinit.util as util
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from cloudinit.CloudConfig import per_once, per_always, per_instance
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from cloudinit import get_ipath_cur
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from urlparse import parse_qs
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frequency = per_instance
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my_name = "cc_rightscale_userdata"
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my_hookname = 'CLOUD_INIT_REMOTE_HOOK'
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def handle(name,cfg,cloud,log,args):
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try:
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ud = cloud.get_userdata_raw()
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except:
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log.warn("failed to get raw userdata in %s" % my_name)
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return
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try:
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mdict = parse_qs(cloud.get_userdata_raw())
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if not my_hookname in mdict: return
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except:
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log.warn("failed to urlparse.parse_qa(userdata_raw())")
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raise
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scripts_d = get_ipath_cur('scripts')
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i = 0
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errors = [ ]
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first_e = None
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for url in mdict[my_hookname]:
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fname = "%s/rightscale-%02i" % (scripts_d,i)
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i = i +1
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try:
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content = util.readurl(url)
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util.write_file(fname, content, mode=0700)
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except Exception as e:
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if not first_e: first_e = None
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log.warn("%s failed to read %s: %s" % (my_name, url, e))
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if first_e:
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raise(e)
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