1 files changed, 73 insertions, 0 deletions
diff --git a/cloudinit/handlers/boot_hook.py b/cloudinit/handlers/boot_hook.py
new file mode 100644
index 00000000..456b8020
--- /dev/null
+++ b/cloudinit/handlers/boot_hook.py
@@ -0,0 +1,73 @@
+# vi: ts=4 expandtab
+#
+#    Copyright (C) 2012 Canonical Ltd.
+#    Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
+#    Copyright (C) 2012 Yahoo! Inc.
+#
+#    Author: Scott Moser <scott.moser@canonical.com>
+#    Author: Juerg Haefliger <juerg.haefliger@hp.com>
+#    Author: Joshua Harlow <harlowja@yahoo-inc.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 handlers
+from cloudinit import log as logging
+from cloudinit import util
+
+from cloudinit.settings import (PER_ALWAYS)
+
+LOG = logging.getLogger(__name__)
+
+
+class BootHookPartHandler(handlers.Handler):
+    def __init__(self, paths, datasource, **_kwargs):
+        handlers.Handler.__init__(self, PER_ALWAYS)
+        self.boothook_dir = paths.get_ipath("boothooks")
+        self.instance_id = None
+        if datasource:
+            self.instance_id = datasource.get_instance_id()
+
+    def list_types(self):
+        return [
+            handlers.type_from_starts_with("#cloud-boothook"),
+        ]
+
+    def _write_part(self, payload, filename):
+        filename = util.clean_filename(filename)
+        payload = util.dos2unix(payload)
+        prefix = "#cloud-boothook"
+        start = 0
+        if payload.startswith(prefix):
+            start = len(prefix) + 1
+        filepath = os.path.join(self.boothook_dir, filename)
+        contents = payload[start:]
+        util.write_file(filepath, contents, 0700)
+        return filepath
+
+    def _handle_part(self, _data, ctype, filename, payload, _frequency):
+        if ctype in handlers.CONTENT_SIGNALS:
+            return
+
+        filepath = self._write_part(payload, filename)
+        try:
+            env = os.environ.copy()
+            if self.instance_id is not None:
+                env['INSTANCE_ID'] = str(self.instance_id)
+            util.subp([filepath], env=env)
+        except util.ProcessExecutionError:
+            util.logexc(LOG, "Boothooks script %s execution error", filepath)
+        except Exception:
+            util.logexc(LOG, ("Boothooks unknown "
+                              "error when running %s"), filepath)