diff options
| -rw-r--r-- | cloudinit/CloudConfig/cc_rightscale_userdata.py | 73 | ||||
| -rw-r--r-- | cloudinit/util.py | 10 | ||||
| -rw-r--r-- | config/cloud.cfg | 1 |
3 files changed, 84 insertions, 0 deletions
diff --git a/cloudinit/CloudConfig/cc_rightscale_userdata.py b/cloudinit/CloudConfig/cc_rightscale_userdata.py new file mode 100644 index 00000000..bf1404e1 --- /dev/null +++ b/cloudinit/CloudConfig/cc_rightscale_userdata.py @@ -0,0 +1,73 @@ +# vi: ts=4 expandtab +# +# Copyright (C) 2011 Canonical Ltd. +# +# Author: Scott Moser <scott.moser@canonical.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_once, per_always, per_instance +from cloudinit import get_ipath_cur +from urlparse import parse_qs + +frequency = per_once +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(cloud.get_userdata_raw()) + 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 + errors = [ ] + 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, 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) diff --git a/cloudinit/util.py b/cloudinit/util.py index 96e93af2..904fa1e1 100644 --- a/cloudinit/util.py +++ b/cloudinit/util.py @@ -323,3 +323,13 @@ def chownbyname(fname,user=None,group=None): gid = grp.getgrnam(group).gr_gid os.chown(fname,uid,gid) + +def readurl(url, data=None): + if data is None: + req = urllib2.Request(url) + else: + encoded = urllib.urlencode(values) + req = urllib2.Request(url, encoded) + + response = urllib2.urlopen(req) + return(response.read()) diff --git a/config/cloud.cfg b/config/cloud.cfg index c499969f..2aa574c7 100644 --- a/config/cloud.cfg +++ b/config/cloud.cfg @@ -22,6 +22,7 @@ cloud_config_modules: - byobu cloud_final_modules: + - rightscale_userdata - scripts-per-once - scripts-per-boot - scripts-per-instance |