diff options
Diffstat (limited to 'cloudinit/DataSourceEc2.py')
| -rw-r--r-- | cloudinit/DataSourceEc2.py | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/cloudinit/DataSourceEc2.py b/cloudinit/DataSourceEc2.py deleted file mode 100644 index 7051ecda..00000000 --- a/cloudinit/DataSourceEc2.py +++ /dev/null @@ -1,217 +0,0 @@ -# vi: ts=4 expandtab -# -# Copyright (C) 2009-2010 Canonical Ltd. -# Copyright (C) 2012 Hewlett-Packard Development Company, L.P. -# -# Author: Scott Moser <scott.moser@canonical.com> -# Author: Juerg Hafliger <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/>. - -import cloudinit.DataSource as DataSource - -from cloudinit import seeddir as base_seeddir -from cloudinit import log -import cloudinit.util as util -import socket -import time -import boto.utils as boto_utils -import os.path - - -class DataSourceEc2(DataSource.DataSource): - api_ver = '2009-04-04' - seeddir = base_seeddir + '/ec2' - metadata_address = "http://169.254.169.254" - - def __str__(self): - return("DataSourceEc2") - - def get_data(self): - seedret = {} - if util.read_optional_seed(seedret, base=self.seeddir + "/"): - self.userdata_raw = seedret['user-data'] - self.metadata = seedret['meta-data'] - log.debug("using seeded ec2 data in %s" % self.seeddir) - return True - - try: - if not self.wait_for_metadata_service(): - return False - start = time.time() - self.userdata_raw = boto_utils.get_instance_userdata(self.api_ver, - None, self.metadata_address) - self.metadata = boto_utils.get_instance_metadata(self.api_ver, - self.metadata_address) - log.debug("crawl of metadata service took %ds" % (time.time() - - start)) - return True - except Exception as e: - print e - return False - - def get_instance_id(self): - return(self.metadata['instance-id']) - - def get_availability_zone(self): - return(self.metadata['placement']['availability-zone']) - - def get_local_mirror(self): - return(self.get_mirror_from_availability_zone()) - - def get_mirror_from_availability_zone(self, availability_zone=None): - # availability is like 'us-west-1b' or 'eu-west-1a' - if availability_zone == None: - availability_zone = self.get_availability_zone() - - fallback = None - - if self.is_vpc(): - return fallback - - try: - host = "%s.ec2.archive.ubuntu.com" % availability_zone[:-1] - socket.getaddrinfo(host, None, 0, socket.SOCK_STREAM) - return 'http://%s/ubuntu/' % host - except: - return fallback - - def wait_for_metadata_service(self): - mcfg = self.ds_cfg - - if not hasattr(mcfg, "get"): - mcfg = {} - - max_wait = 120 - try: - max_wait = int(mcfg.get("max_wait", max_wait)) - except Exception: - util.logexc(log) - log.warn("Failed to get max wait. using %s" % max_wait) - - if max_wait == 0: - return False - - timeout = 50 - try: - timeout = int(mcfg.get("timeout", timeout)) - except Exception: - util.logexc(log) - log.warn("Failed to get timeout, using %s" % timeout) - - def_mdurls = ["http://169.254.169.254", "http://instance-data:8773"] - mdurls = mcfg.get("metadata_urls", def_mdurls) - - # Remove addresses from the list that wont resolve. - filtered = [x for x in mdurls if util.is_resolvable_url(x)] - - if set(filtered) != set(mdurls): - log.debug("removed the following from metadata urls: %s" % - list((set(mdurls) - set(filtered)))) - - if len(filtered): - mdurls = filtered - else: - log.warn("Empty metadata url list! using default list") - mdurls = def_mdurls - - urls = [] - url2base = {False: False} - for url in mdurls: - cur = "%s/%s/meta-data/instance-id" % (url, self.api_ver) - urls.append(cur) - url2base[cur] = url - - starttime = time.time() - url = util.wait_for_url(urls=urls, max_wait=max_wait, - timeout=timeout, status_cb=log.warn) - - if url: - log.debug("Using metadata source: '%s'" % url2base[url]) - else: - log.critical("giving up on md after %i seconds\n" % - int(time.time() - starttime)) - - self.metadata_address = url2base[url] - return (bool(url)) - - def device_name_to_device(self, name): - # consult metadata service, that has - # ephemeral0: sdb - # and return 'sdb' for input 'ephemeral0' - if 'block-device-mapping' not in self.metadata: - return(None) - - found = None - for entname, device in self.metadata['block-device-mapping'].items(): - if entname == name: - found = device - break - # LP: #513842 mapping in Euca has 'ephemeral' not 'ephemeral0' - if entname == "ephemeral" and name == "ephemeral0": - found = device - if found == None: - log.debug("unable to convert %s to a device" % name) - return None - - # LP: #611137 - # the metadata service may believe that devices are named 'sda' - # when the kernel named them 'vda' or 'xvda' - # we want to return the correct value for what will actually - # exist in this instance - mappings = {"sd": ("vd", "xvd")} - ofound = found - short = os.path.basename(found) - - if not found.startswith("/"): - found = "/dev/%s" % found - - if os.path.exists(found): - return(found) - - for nfrom, tlist in mappings.items(): - if not short.startswith(nfrom): - continue - for nto in tlist: - cand = "/dev/%s%s" % (nto, short[len(nfrom):]) - if os.path.exists(cand): - log.debug("remapped device name %s => %s" % (found, cand)) - return(cand) - - # on t1.micro, ephemeral0 will appear in block-device-mapping from - # metadata, but it will not exist on disk (and never will) - # at this pint, we've verified that the path did not exist - # in the special case of 'ephemeral0' return None to avoid bogus - # fstab entry (LP: #744019) - if name == "ephemeral0": - return None - return ofound - - def is_vpc(self): - # per comment in LP: #615545 - ph = "public-hostname" - p4 = "public-ipv4" - if ((ph not in self.metadata or self.metadata[ph] == "") and - (p4 not in self.metadata or self.metadata[p4] == "")): - return True - return False - - -datasources = [ - (DataSourceEc2, (DataSource.DEP_FILESYSTEM, DataSource.DEP_NETWORK)), -] - - -# return a list of data sources that match this set of dependencies -def get_datasource_list(depends): - return(DataSource.list_from_depends(depends, datasources)) |