Add DigitalOcean DataSource

The DigitalOcean metadata service is an AWS-style service available
over HTTP via the link local address 169.254.169.254. The specifics
of the API are documented at:

https://developers.digitalocean.com/metadata/

1 files changed, 102 insertions, 0 deletions

diff --git a/cloudinit/sources/DataSourceDigitalOcean.py b/cloudinit/sources/DataSourceDigitalOcean.py
new file mode 100644
index 00000000..c580e2d5
--- /dev/null
+++ b/cloudinit/sources/DataSourceDigitalOcean.py
@@ -0,0 +1,102 @@
+# vi: ts=4 expandtab
+#
+#    Author: Neal Shrader <neal@digitalocean.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/>.
+
+from cloudinit import log as logging
+from cloudinit import util
+from cloudinit import sources
+from cloudinit import url_helper
+
+LOG = logging.getLogger(__name__)
+
+BUILTIN_DS_CONFIG = {
+    'metadata_url': 'http://169.254.169.254/metadata/v1',
+    'mirrors_url': 'http://mirrors.digitalocean.com/'
+}
+
+class DataSourceDigitalOcean(sources.DataSource):
+    def __init__(self, sys_cfg, distro, paths):
+        sources.DataSource.__init__(self, sys_cfg, distro, paths)
+        self.metadata = dict()
+        self.ds_cfg = util.mergemanydict([
+            util.get_cfg_by_path(sys_cfg, ["datasource", "DigitalOcean"], {}),
+            BUILTIN_DS_CONFIG])
+        self.metadata_address = self.ds_cfg['metadata_url']
+        self.retries = 3
+        self.timeout = 1
+
+    def get_data(self):
+        url_map = [
+               ('user-data', '/user-data'),
+               ('vendor-data', '/vendor-data'),
+               ('public-keys', '/public-keys'),
+               ('region', '/region'),
+               ('id', '/id'),
+               ('hostname', '/hostname'),
+        ]
+
+        found = False
+        for (key, path) in url_map:
+            try:
+                resp = url_helper.readurl(url=self.metadata_address + path,
+                                          timeout=self.timeout,
+                                          retries=self.retries)
+                if resp.code == 200:
+                    found = True
+                    self.metadata[key] = resp.contents
+                else:
+                    LOG.warn("Path: %s returned %s", path, resp.code)
+                    return False
+            except url_helper.UrlError as e:
+                LOG.warn("Path: %s raised exception: %s", path, e)
+                return False
+
+        return found
+
+    def get_userdata_raw(self):
+        return self.metadata['user-data']
+
+    def get_vendordata_raw(self):
+	return self.metadata['vendor-data']
+
+    def get_public_ssh_keys(self):
+	return self.metadata['public-keys'].splitlines()
+
+    @property
+    def availability_zone(self):
+        return self.metadata['region']
+
+    def get_instance_id(self):
+        return self.metadata['id']
+
+    def get_hostname(self, fqdn=False):
+        return self.metadata['hostname']
+
+    def get_package_mirror_info(self):
+        return self.ds_cfg['mirrors_url']
+
+    @property
+    def launch_index(self):
+        return None
+
+# Used to match classes to dependencies
+datasources = [
+  (DataSourceDigitalOcean, (sources.DEP_FILESYSTEM, sources.DEP_NETWORK)),
+  ]
+
+
+# Return a list of data sources that match this set of dependencies
+def get_datasource_list(depends):
+    return sources.list_from_depends(depends, datasources)