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+# vi: ts=4 expandtab
+#
+# Copyright (C) 2011 Canonical Ltd.
+# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
+#
+# Author: Scott Moser <scott.moser@canonical.com>
+# Author: Juerg Haefliger <juerg.haefliger@hp.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 3, as
+# published by the Free Software Foundation.
+#
+# 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+##
+## The purpose of this script is to allow cloud-init to consume
+## rightscale style userdata. rightscale user data is key-value pairs
+## in a url-query-string like format.
+##
+## for cloud-init support, there will be a key named
+## 'CLOUD_INIT_REMOTE_HOOK'.
+##
+## This cloud-config module will
+## - read the blob of data from raw user data, and parse it as key/value
+## - for each key that is found, download the content to
+## the local instance/scripts directory and set them executable.
+## - the files in that directory will be run by the user-scripts module
+## Therefore, this must run before that.
+##
+##
+
+import cloudinit.util as util
+from cloudinit.CloudConfig import per_instance
+from cloudinit import get_ipath_cur
+from urlparse import parse_qs
+
+frequency = per_instance
+my_name = "cc_rightscale_userdata"
+my_hookname = 'CLOUD_INIT_REMOTE_HOOK'
+
+
+def handle(_name, _cfg, cloud, log, _args):
+ try:
+ ud = cloud.get_userdata_raw()
+ except:
+ log.warn("failed to get raw userdata in %s" % my_name)
+ return
+
+ try:
+ mdict = parse_qs(ud)
+ if not my_hookname in mdict:
+ return
+ except:
+ log.warn("failed to urlparse.parse_qa(userdata_raw())")
+ raise
+
+ scripts_d = get_ipath_cur('scripts')
+ i = 0
+ first_e = None
+ for url in mdict[my_hookname]:
+ fname = "%s/rightscale-%02i" % (scripts_d, i)
+ i = i + 1
+ try:
+ content = util.readurl(url)
+ util.write_file(fname, content, mode=0700)
+ except Exception as e:
+ if not first_e:
+ first_e = None
+ log.warn("%s failed to read %s: %s" % (my_name, url, e))
+
+ if first_e:
+ raise(e)