Synnefo » snf-occi

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import sys, os

extensions = []

# Add any paths that contain templates here, relative to this directory.

templates_path = ['_templates']

# The suffix of source filenames.

source_suffix = '.rst'

# The encoding of source files.

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copyright = u'2012, GRNET'

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# -- Options for Texinfo output ------------------------------------------------

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intersphinx_mapping = {

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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`