93 lines
3.2 KiB
Python
93 lines
3.2 KiB
Python
# vi: ts=4 expandtab
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#
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# Copyright (C) 2012 Canonical Ltd.
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# Copyright (C) 2012 Cosmin Luta
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#
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# Author: Cosmin Luta <q4break@gmail.com>
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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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import cloudinit.DataSource as DataSource
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from cloudinit import seeddir as base_seeddir
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from cloudinit import log
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import cloudinit.util as util
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from socket import inet_ntoa
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import time
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import boto.utils as boto_utils
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from struct import pack
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class DataSourceCloudStack(DataSource.DataSource):
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api_ver = 'latest'
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seeddir = base_seeddir + '/cs'
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metadata_address = None
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def __init__(self, sys_cfg=None):
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DataSource.DataSource.__init__(self, sys_cfg)
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# Cloudstack has its metadata/userdata URLs located at
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# http://<default-gateway-ip>/latest/
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self.metadata_address = "http://%s/" % self.get_default_gateway()
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def get_default_gateway(self):
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""" Returns the default gateway ip address in the dotted format
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"""
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with open("/proc/net/route", "r") as f:
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for line in f.readlines():
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items = line.split("\t")
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if items[1] == "00000000":
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# found the default route, get the gateway
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gw = inet_ntoa(pack("<L", int(items[2], 16)))
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log.debug("found default route, gateway is %s" % gw)
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return gw
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def __str__(self):
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return "DataSourceCloudStack"
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def get_data(self):
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seedret = {}
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if util.read_optional_seed(seedret, base=self.seeddir + "/"):
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self.userdata_raw = seedret['user-data']
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self.metadata = seedret['meta-data']
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log.debug("using seeded cs data in %s" % self.seeddir)
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return True
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try:
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start = time.time()
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self.userdata_raw = boto_utils.get_instance_userdata(self.api_ver,
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None, self.metadata_address)
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self.metadata = boto_utils.get_instance_metadata(self.api_ver,
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self.metadata_address)
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log.debug("crawl of metadata service took %ds" %
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(time.time() - start))
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return True
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except Exception as e:
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log.exception(e)
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return False
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def get_instance_id(self):
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return self.metadata['instance-id']
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def get_availability_zone(self):
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return self.metadata['availability-zone']
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datasources = [
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(DataSourceCloudStack, (DataSource.DEP_FILESYSTEM, DataSource.DEP_NETWORK)),
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]
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# return a list of data sources that match this set of dependencies
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def get_datasource_list(depends):
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return DataSource.list_from_depends(depends, datasources)
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