File datasourceLocalDisk.patch of Package cloud-init

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File datasourceLocalDisk.patch of Package cloud-init (Revision 91577b9c4b37a4b158e172688fada975)

Currently displaying revision 91577b9c4b37a4b158e172688fada975 , Show latest

--- /dev/null
+++ cloudinit/sources/DataSourceLocalDisk.py
@@ -0,0 +1,107 @@
+# vi: ts=4 expandtab
+#
+#    Copyright (C) 2016 SUSE Linux GmbH
+#
+#    Author: Thorsten Kukuk <kukuk@suse.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 os
+
+from cloudinit import log as logging
+from cloudinit import sources
+from cloudinit import util
+
+LOG = logging.getLogger(__name__)
+
+DEFAULT_IID = "iid-localdisk"
+
+
+class DataSourceLocalDisk(sources.DataSource):
+    def __init__(self, sys_cfg, distro, paths):
+        sources.DataSource.__init__(self, sys_cfg, distro, paths)
+        self.seed = None
+        self.seed_dir = os.path.join(paths.seed_dir, 'localdisk')
+
+    def __str__(self):
+        root = sources.DataSource.__str__(self)
+        return "%s [seed=%s][dsmode=%s]" % (root, self.seed, self.dsmode)
+
+    def get_data(self):
+        if not os.path.isdir('/cloud-init-config'):
+            return False
+
+        defaults = {"instance-id": DEFAULT_IID}
+
+        found = []
+        mydata = {'meta-data': {}, 'user-data': "", 'vendor-data': ""}
+
+        # Check to see if the seed dir has data.
+        try:
+            seeded = util.pathprefix2dict(
+                self.seed_dir, ['user-data', 'meta-data'], ['vendor-data']
+            )
+            found.append(self.seed_dir)
+            mydata = _merge_new_seed(mydata, seeded)
+        except ValueError:
+            pass
+
+        try:
+            seeded = util.pathprefix2dict(
+                '/cloud-init-config', ['user-data', 'meta-data'],
+                ['vendor-data']
+            )
+            found.append('/cloud-init-config')
+            mydata = _merge_new_seed(mydata, seeded)
+        except ValueError:
+            return False
+
+        # Merge in the defaults
+        mydata['meta-data'] = util.mergemanydict([mydata['meta-data'],
+                                                  defaults])
+
+        self.seed = ",".join(found)
+        self.metadata = mydata['meta-data']
+        self.userdata_raw = mydata['user-data']
+        self.vendordata_raw = mydata['vendor-data']
+        return True
+
+    def check_instance_id(self, sys_cfg):
+        # quickly (local check only) if self.instance_id is still valid
+        return sources.instance_id_matches_system_uuid(self.get_instance_id())
+
+
+def _merge_new_seed(cur, seeded):
+    ret = cur.copy()
+
+    newmd = seeded.get('meta-data', {})
+    if not isinstance(seeded['meta-data'], dict):
+        newmd = util.load_yaml(seeded['meta-data'])
+    ret['meta-data'] = util.mergemanydict([cur['meta-data'], newmd])
+
+    if 'user-data' in seeded:
+        ret['user-data'] = seeded['user-data']
+    if 'vendor-data' in seeded:
+        ret['vendor-data'] = seeded['vendor-data']
+    return ret
+
+
+# Used to match classes to dependencies
+datasources = [
+    (DataSourceLocalDisk, (sources.DEP_FILESYSTEM, )),
+]
+
+
+# Return a list of data sources that match this set of dependencies
+def get_datasource_list(depends):
+    return sources.list_from_depends(depends, datasources)

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File datasourceLocalDisk.patch of Package cloud-init (Revision 91577b9c4b37a4b158e172688fada975)

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