Commit be350355 authored by John Giannelos's avatar John Giannelos
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Initial documentation commit

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.. snf-occi documentation master file, created by
sphinx-quickstart on Mon Mar 26 13:45:54 2012.
You can adapt this file completely to your liking, but it should at least
contain the root `toctree` directive.
Welcome to snf-occi's documentation!
====================================
snf-occi implements OCCI specifications to synnefo's API in order to achieve greater interoperability in common tasks refering cyclades management.
.. toctree::
:maxdepth: 2
About OCCI
----------
Current OCCI specification consists of the following three documents:
* `OCCI Core <http://ogf.org/documents/GFD.183.pdf>`_
* `OCCI Infrastructure <http://ogf.org/documents/GFD.184.pdf>`_
* `OCCI HTTP rendering <http://ogf.org/documents/GFD.185.pdf>`_
OCCI and Cyclades
-----------------
OCCI implementation in Cyclades is going to be based in the **OCCI Infrastructure** specifications, in which common Cloud IaaS components are described. Below you can see the matching components between OCCI and Cyclades:
+----------------+------------------+
|OCCI |Cyclades |
+================+==================+
|Compute linked |Synnefo servers |
|to Storage | |
+----------------+------------------+
|Mixin |Synnefo images |
| | |
+----------------+------------------+
|Mixin |Synnefo flavors |
+----------------+------------------+
|Network |Network and |
| |NetworkInterfaces |
| |from |
| |synnefo.db.models |
+----------------+------------------+
|NetworkInterface|NetworkLink in |
| |synnefo.db.models |
+----------------+------------------+
**Note:** Metadata info in synnefo's servers cannot be represented (clearly) using OCCI's components.
Call mapping from OCCI to Cyclades API
---------------------------------------
Due to OCCI's structure there cannot be straightforward mapping to Cyclades/OpenStack API. The missing elements are:
* Networking capabilities using current Cyclades API (networking is supported, but not in OCCI's format)
* OCCI seperates the compute resource from the storage or image/flavor. As a result synnefo's servers cannot be represented only with OCCI's Compute.
OCCI operations-Mapping
***********************
Below you can see the required procedures/operations for OCCI compatibility, and their mappings to Cyclades API (if possible).
* Handling the query interface
* Query interface must be found under path /-/
* Retrieve all registered Kinds, Actions and Mixins
* Add a mixin definition
* Remove a mixin definition
* Operation on paths in the name-space
* Retrieving the state of the name-space hierarchy
* Retrieving all Resource instances below a path
* Deletion of all Resource instances below a path
* Operations on Mixins and Kinds
* Retrieving all Resource instances belonging to Mixin or Kind
* Triggering actions to all instances of a Mixin or a Kind
* Associate resource instances with a Mixin or a Kind
* Full update of a Mixin collection
* Dissociate resource instances from a Mixin
* Operations on Resource instances
* Creating a resource instance
* Compute: api.server.create_server()
* Network: -
* Storage: -
* Retrieving a resource instance
* Compute: api.server.get_server_details()
* Network: -
* Storage: -
* Partial update of a resource instance
* Compute: api.actions.resize()
* Network: -
* Storage: -
* Full update of a resource instance
* Compute: -
* Network: -
* Storage: -
* Delete a resource instance
* Compute: api.server.delete_server()
* Network: -
* Storage: -
* Triggering an action on a resource instance
* Compute: api.actions.start(), api.actions.shutdown(), api.actions.reboot()
* Network: -
* Storage: -
* Handling Link instances **(not well-defined in Cyclades API)**
* Inline creation of a Link instance
* Retrieving Resource instances with defined Links
* Creating of Link Resource instance
OCCI client/server library
==========================
occi-py is a generic library implementation of the Open Cloud Computing Interface (OCCI). It aims to provide a high-level interface for the integration of OCCI to other new or existing applications.
Features:
---------
* It includes a REST API service with the OCCI specifications already implemented
* It only requires a custom backend to interact with Cyclades
* Being a python wsgi application, occi-py is easily deployed with Django or with its default web-server (tornado).
Package on pypi: `OCCI 0.6 <http://pypi.python.org/pypi/occi/0.6>`_
Indices and tables
==================
* :ref:`genindex`
* :ref:`search`
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