Shell script handlers by freq (#1166)

Handlers for per-boot/per-instance/per-once multipart MIME

Add handlers for adding scripts to userdata that can be run at various
frequencies. Scripts of type x-shellscript-per-boot,
x-shellscript-per-instance, or x-shellscript-per-once can be added
to a multipart MIME userdata message as part of instance userdata.
These scripts will then be added to the appropriate per-boot,
per-instance, or per-once directory in /var/lib/cloud/scripts/
during processing of userdata.

1 files changed, 7 insertions, 0 deletions

diff --git a/cloudinit/handlers/__init__.py b/cloudinit/handlers/__init__.py
index 62c1fd26..7d8a9208 100644
--- a/cloudinit/handlers/__init__.py
+++ b/cloudinit/handlers/__init__.py
@@ -50,6 +50,13 @@ INCLUSION_TYPES_MAP = {
     "#cloud-config-archive": "text/cloud-config-archive",
     "#cloud-config-jsonp": "text/cloud-config-jsonp",
     "## template: jinja": "text/jinja2",
+    # Note: for the next 3 entries, the prefix doesn't matter because these
+    # are for types that can only be used as part of a MIME message. However,
+    # including these entries supresses warnings during `cloudinit devel
+    # make-mime`, which otherwise would require `--force`.
+    "text/x-shellscript-per-boot": "text/x-shellscript-per-boot",
+    "text/x-shellscript-per-instance": "text/x-shellscript-per-instance",
+    "text/x-shellscript-per-once": "text/x-shellscript-per-once",
 }
 
 # Sorted longest first