Index
=====
This is a index (`index.json`) of available product files. The default/expected location
of an index file is `streams/v1/index.json` or `streams/v1/index.sjson` underneath the top level
of a mirror.
Index files have a top level `index` dictionary. Each dictionary is a `content_id`
(eg. `com.ubuntu.cloud:daily:download`) of a product file.
The `content_id` entry must have a `path` item which points to the product JSON file.

All other data inside the product entry is not required, but helps a client
to find what they're looking for.

.. note::

   index files are not required to be signed, as they only
   contain references to other content that is signed, and that is hosted
   on the same mirror.

There is also a JSON schema available. See :ref:`jsonschema_index`.