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README.rst

pyOCNI - Python Open Cloud Networking Interface

Version: 0.9
Source: https://github.com/jordan-developer/pyOCNI
Keywords: OCCI, OCNI, REST, Interface, HTTP, JSON, CouchDB, Eventlet, Webob, Cloud Computing, Cloud Networking

Developers

Copyright (C) Houssem Medhioub <houssem.medhioub@it-sudparis.eu>

Copyright (C) Bilel Msekni <bilel.msekni@telecom-sudparis.eu>

Redistribution of this software is permitted under the terms of the Apache License, Version 2.0

Table of Contents

0. What is it?
1. The Latest Version
2. API Documentation
3. Installation
  3.1. Requirements
  3.2. Install
  3.3. Configuration
  3.4. Server running
4. HowTo use (examples)
5. For developers
6. Licensing
7. Contacts
8. Acknowledgment
9. Todo
10. json files to execute the HowTo use examples

0. What is it?

pyOCNI (Python Open Cloud Networking Interface): A Python implementation of an extended OCCI server with a JSON/HTTP serialization and a Category Manager.

1. The Latest Version

version 0.9

2. API Documentation

the api documentation are available through this html file: pyOCNI/pyocni/doc/index.html

3. Installation

3.1. Requirements

This software needs this packages to run:

  • python <= 2.7
  • python-all-dev (for eventlet/greenlet install/make)
  • python-setuptools (to execute the setup.py file)
  • couchdb >= 1.2.0:

To install couchdb on Ubuntu

sudo apt-get install couchdb

To test CouchDB: http://127.0.0.1:5984

To test CouchDB GUI: http://127.0.0.1:5984/_utils/

3.2. Install

sudo python setup.py install

3.3. Configuration

  • Logger configuration: OCCILogging.conf
  • Server configuration: occi_server.conf
  • CouchDB configuration: couchdb_server.conf

3.4. Server running

sudo python start.py

4. HowTo use

In order to use pyOCNI, you must respect certain rules :

  1. All requests/responses must follow the OCCI standard, any detected conflict will cancel the request.
  2. Kinds, Mixins and Actions can be created, retrieved, updated or deleted (CRUD) on the fly.
  3. Scheme + Term = OCCI_ID : unique identifier of the OCCI (Kind/Mixin/Action) description
  4. PyOCNI_Server_Address + location = OCCI_Location of (Kind/Mixin/Action) description
  5. location word refers to a kind or mixin location.
  6. Links will be treated the same way as resources and internal links are not taking into account for clarity reasons.

PyOCNI offers two OCCI rendering formats : HTTP and JSON. The following commands are JSON specific. If you want to see HTTP command please check here.

Note: To simplify the output, contents of the requests are available in section json files to execute the HowTo.

4.1. Category management

1.Retrieval of all registered Categories (Kinds, Mixins and Actions):

curl -X GET -H 'accept: application/occi+json' -v http://localhost:8090/-/
  • Response:

    {
            "actions": [
                {
                    "term": "start",
                    "scheme": "http://schemas.ogf.org/occi/infrastructure/compute/action#",
                    "title": "Stop Compute instance",
                    "attributes": {
                        "method": {
                            "mutable": true,
                            "required": false,
                            "type": "string",
                            "pattern": "graceful|acpioff|poweroff",
                            "default": "poweroff"
                        }
                    }
                }
            ],
            "kinds": [
                {
                    "term": "storage",
                    "scheme": "http://schemas.ogf.org/occi/infrastructure#",
                    "title": "Compute Resource",
                    "attributes": {
                        "occi": {
                            "compute": {
                                "hostname": {
                                    "mutable": true,
                                    "required": false,
                                    "type": "string",
                                    "pattern": "(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\\\\-]*[a-zA-Z0-9])\\\\.)*",
                                    "minimum": "1",
                                    "maximum": "255"
                                },
                                "state": {
                                    "mutable": false,
                                    "required": false,
                                    "type": "string",
                                    "pattern": "inactive|active|suspended|failed",
                                    "default": "inactive"
                                }
                            }
                        }
                    },
                    "actions": [
                        "http://schemas.ogf.org/occi/infrastructure/compute/action#start"
                    ],
                    "location": "/storage/"
                }
            ],
            "mixins": [
                {
                    "term": "resource_tpl",
                    "scheme": "http://schemas.ogf.org/occi/infrastructure#",
                    "title": "Medium VM",
                    "related": [],
                    "attributes": {
                        "occi": {
                            "compute": {
                                "speed": {
                                    "type": "number",
                                    "default": 2.8
                                }
                            }
                        }
                    },
                    "location": "/template/resource/resource_tpl/"
                }
            ]
        }
    

2.Retrieval of specific Kinds, Mixins and Actions using filtering:

curl -X GET -d@filter_categories.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/-/
  • Response:

    {
     "actions": [
         {
             "term": "start",
             "scheme": "http://schemas.ogf.org/occi/infrastructure/compute/action#",
             "title": "Stop Compute instance",
             "attributes": {
                 "method": {
                     "mutable": true,
                     "required": false,
                     "type": "string",
                     "pattern": "graceful|acpioff|poweroff",
                     "default": "poweroff"
                 }
             }
         }
     ]
     }
    

3.Add categories (Kinds and/or Mixins and/or Actions):

curl -X POST -d@post_categories.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/-/
  • Response:

    N/A
    

4.Update of Categories (Kinds and/or Mixins and/or Actions):

curl -X PUT -d@put_categories.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/-/
  • Response:

    N/A
    

5.Deletion of Categories (Kinds and/or Mixins and/or Actions):

curl -X DELETE -d@delete_categories.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/-/
  • Response:

    N/A
    

6.Update a kind provider:

curl -X PUT -d@update_provider.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/-/
  • Response:

    N/A
    

4.2. Path management

1.Get Resources,Links and URLs below a path

curl -X GET -H 'accept: application/occi+json' -v http://localhost:8090/{path}
  • Response:

    [
     "http://localhost:8090/{path}/vm3",
     "http://localhost:8090/{path}/fooVM",
     "http://localhost:8090/{path}/user/"
    ]
    

2.Get Resources and Links below a path:

curl -X GET -H 'accept: application/occi+json' -v http://localhost:8090/{primary}/{secondary}
  • Response:

    {
     "X-OCCI-Location": [
        " http://localhost:8090/{primary}/{secondary}/vm1",
         "http://localhost:8090/{primary}/{secondary}/vm2",
         "http://localhost:8090/{primary}/{secondary}/vm3"
     ]
    }
    

3.Delete all Resources and Links below a path:

curl -X DELETE -H 'accept: application/occi+json' -v http://localhost:8090/{primary}/{secondary}
  • Response:

    N/A
    

4.3. Multiple resource management

1.Get multiple resources of a kind/mixin:

curl -X GET -H 'accept: application/occi+json' -v http://localhost:8090/{location}/
  • Response:

        {
     "X-OCCI-Location": [
         "http://localhost:8090/{location}/vm1",
         "http://localhost:8090/{location}/vm2",
         "http://localhost:8090/{location}/vm3"
     ]
    }
    

2.Get specific resources of a kind/mixin using filtering:

curl -X GET -d@get_resources.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/{location}/
  • Response:

     {
     "X-OCCI-Location": [
         "http://localhost:8090/{location}/vm1",
         "http://localhost:8090/{location}/vm2"
     ]
    }
    

3.Create multiple resources of a kind:

curl -X POST -d@post_resources.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/{kind_location}/
  • Response:

    {
     "Location": [
         "http://localhost:8090/{kind_location}/resource1_id",
         "http://localhost:8090/{kind_location}/resource2_id",
         "http://localhost:8090/{kind_location}/resource3_id"
     ]
    }
    

4.Trigger an action on multiple resources of a kind/mixin:

curl -X POST -d@trigger_action.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/{location}/?action={action_name}
  • Response:

    N/A
    

3.Associate a mixin to multiple resources:

curl -X POST -d@associate_mixins.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/{mixin_location}/
  • Response:

    N/A
    

5.Full update of the mixin collection of multiple resources:

curl -X PUT -d@update_mixins.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/{mixin_location}/
  • Response:

    N/A
    

6.Dissociate resource from mixins:

curl -X DELETE -d@dissociate_mixin.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/{mixin_location}/
  • Response:

    N/A
    

4.4. Single resource management

1.Create a Resource with a custom URL path:

curl -X PUT -d@post_custom_resource.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/{location}/{my_custom_resource_id}
  • Response:

    {"Location": ["http://localhost:8090/{location}/{my_custom_resource_id}"]}
    

2.Get a Resource:

curl -X GET -H 'accept: application/occi+json' -v http://localhost:8090/{location}/{resource-id}
  • Response:

    {
    "resources": [
       {
           "kind": "http: //schemas.ogf.org/occi/infrastructure#compute",
           "mixins": [
               "http: //schemas.opennebula.org/occi/infrastructure#my_mixin",
               "http: //schemas.other.org/occi#my_mixin"
           ],
           "attributes": {
               "occi": {
                   "compute": {
                       "speed": 2,
                       "memory": 4,
                       "cores": 2
                   }
               },
               "org": {
                   "other": {
                       "occi": {
                           "my_mixin": {
                               "my_attribute": "my_value"
                           }
                       }
                   }
               }
           },
           "actions": [
               {
                   "title": "Start My Server",
                   "href": "/compute/996ad860-2a9a-504f-8861-aeafd0b2ae29?action=start",
                   "category": "http://schemas.ogf.org/occi/infrastructure/compute/action#start"
               }
           ],
           "id": "996ad860-2a9a-504f-8861-aeafd0b2ae29",
           "title": "Compute resource",
           "summary": "This is a compute resource",
           "links": [
               {
                   "target": "http://myservice.tld/storage/59e06cf8-f390-5093-af2e-3685be593",
                   "kind": "http: //schemas.ogf.org/occi/infrastructure#storagelink",
                   "attributes": {
                       "occi": {
                           "storagelink": {
                               "deviceid": "ide: 0: 1"
                           }
                       }
                   },
                   "id": "391ada15-580c-5baa-b16f-eeb35d9b1122",
                   "title": "Mydisk"
               }
           ]
       }
    ]
    }
    

3.Full Update of a Resource:

curl -X PUT -d@full_update_resource.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/{location}/{resource-id}
  • Response:

    {
     Location": [
         "http://localhost:8090/{location}/{resource-id}"
     ]
    }
    

4.Partial Update of a Resource:

curl -X POST -d@partial_update_resource.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/{location}/{resource-id}

* Response::

{
 "Location": [
     "http://localhost:8090/{location}/{resource-id}"
 ]
}

5.Trigger an action on a resource:

curl -X POST -d@action_on_resource.json -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/{location}/{resource-id}?action={action_name}
  • Response:

    N/A
    

6.Delete a Resource:

curl -X DELETE -H 'content-type: application/occi+json' -H 'accept: application/occi+json' -v http://localhost:8090/{location}/{resource-id}
  • Response:

    N/A
    

5. For developers

If you want export the use of your service through OCCI, two parts should be developped:

  1. the definition of the kind, action, and mixin with the list of attributes
  2. implementation of the specific service backend (CRUD operations)

6. Licensing

Copyright 2010-2012 Institut Mines-Telecom

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

7. Contacts

Houssem Medhioub: houssem.medhioub@it-sudparis.eu

Bilel Msekni: bilel.msekni@telecom-sudparis.eu

Djamal Zeghlache: djamal.zeghlache@it-sudparis.eu

8. Acknowledgment

This work has been supported by:

9. Todo

This release of pyocni is experimental.

Some of pyocni's needs might be:

10. JSON example files of the HowTo

  • filter_categories.json:

    {
     "actions": [
         {
             "attributes": {
                 "method": {
                     "mutable": true,
                     "required": false,
                     "type": "string",
                     "pattern": "graceful|acpioff|poweroff",
                     "default": "poweroff"
                 }
             }
         }
     ]
     }
    
  • post_categories.json:

    {
        "kinds": [
            {
                "term": "compute",
                "scheme": "http://schemas.ogf.org/occi/infrastructure#",
                "title": "Compute Resource",
                "related": [
                    "http://schemas.ogf.org/occi/core#resource"
                ],
                "attributes": {
                    "occi": {
                        "compute": {
                            "hostname": {
                                "mutable": true,
                                "required": false,
                                "type": "string",
                                "pattern": "(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\\\\-]*[a-zA-Z0-9])\\\\.)*",
                                "minimum": "1",
                                "maximum": "255"
                            },
                            "state": {
                                "mutable": false,
                                "required": false,
                                "type": "string",
                                "pattern": "inactive|active|suspended|failed",
                                "default": "inactive"
                            }
                        }
                    }
                },
                "actions": [
                    "http://schemas.ogf.org/occi/infrastructure/compute/action#start",
                    "http://schemas.ogf.org/occi/infrastructure/compute/action#stop",
                    "http://schemas.ogf.org/occi/infrastructure/compute/action#restart"
                ],
                "location": "/compute/"
            }
        ]
    }
    
  • put_categories.json:

    {
        "mixins": [
            {
                "term": "resource_tpl",
                "scheme": "http: //schemas.ogf.org/occi/infrastructure#",
                "title": "MediumVM",
                "related": [],
                "attributes": {
                    "occi": {
                        "compute": {
                            "speed": {
                                "type": "number",
                                "default": 2.8
                            }
                        }
                    }
                },
                "location": "/template/resource/resource_tpl/"
            }
        ]
    }
    
  • delete_categories.json:

    {
        "kinds": [
            {
                "term": "storage",
                "scheme": "http: //schemas.ogf.org/occi/infrastructure#"
            }
        ]
    }
    
  • update_provider.json:

    {
     "providers": [
             {
             "Provider": {
                 "local": [
                     "dummy"
                 ],
                 "remote": [
                     "Bilel"
                 ]
             },
             "OCCI_ID": "http://schemas.ogf.org/occi/infrastructure#compute"
         }
     ]
    }
    
  • get_resources.json:

    {
        "resources": [
            {
                "attributes": {
                    "occi": {
                        "compute": {
                            "speed": 2,
                            "memory": 4,
                            "cores": 2
                        }
                    }
                }
            }
        ]
    }
    
  • post_resources.json:

    {
        "resources": [
            {
                "kind": "http: //schemas.ogf.org/occi/infrastructure#compute",
                "mixins": [
                    "http: //schemas.opennebula.org/occi/infrastructure#my_mixin",
                    "http: //schemas.other.org/occi#my_mixin"
                ],
                "attributes": {
                    "occi": {
                        "compute": {
                            "speed": 2,
                            "memory": 4,
                            "cores": 2
                        }
                    }
                },
                "id": "996ad860-2a9a-504f-8861-aeafd0b2ae29",
                "title": "Compute resource",
                "summary": "This is a compute resource"
            }
        ]
    }
    
  • trigger_action.json:

    {
        "actions": [
            {
                "term": "start",
                "scheme": "http://schemas.ogf.org/occi/infrastructure/compute/action#"
            }
        ],
        "attributes": {
            "occi": {
                "infrastructure": {
                    "networkinterface": {
                        "interface": "eth0",
                        "mac": "00:80:41:ae:fd:7e",
                        "address": "192.168.0.100",
                        "gateway": "192.168.0.1",
                        "allocation": "dynamic"
                    }
                }
            }
        }
    }
    
  • associate_mixin.json:

    {
    "X-OCCI-Location": [
        "http://localhost:8090/{location1}/vm1",
        "http://localhost:8090/{location2}/vm2"
    ]
    }
    
  • update_mixins.json:

    {
        "X-OCCI-Location": [
            "http://localhost:8090/{location1}/vm1",
            "http://localhost:8090/{location2}/vm2"
        ]
    }
    
  • dissociate_mixins.json:

    {
        "X-OCCI-Location": [
            "http://localhost:8090/{location1}/vm1",
            "http://localhost:8090/{location2}/vm2"
        ]
       }
    
  • post_custom_resource.json:

    {
        "resources": [
            {
                "kind": "http://schemas.ogf.org/occi/infrastructure#compute",
                "mixins": [
                    "http://example.com/template/resource#medium"
                ],
                "attributes": {
                    "occi": {
                        "compute": {
                            "speed": 2,
                            "memory": 4,
                            "cores": 12
                        }
                    }
                },
                "actions": [
                    {
                        "title": "Start My Server",
                        "href": "/compute/996ad860-2a9a-504f-8861-aeafd0b2ae29?action=start",
                        "category": "http://schemas.ogf.org/occi/infrastructure/compute/action#start"
                    }
                ],
                "id": "9930",
                "title": "Compute resource",
                "summary": "This is a compute resource"
            }
        ]
    }
    
  • full_update_resource.json:

    {
        "resources": [
            {
                "kind": "http://schemas.ogf.org/occi/infrastructure#compute",
                "mixins": [
                    "http://example.com/template/resource#medium"
                ],
                "attributes": {
                    "occi": {
                        "compute": {
                            "speed": 2,
                            "memory": 4,
                            "cores": 12
                        }
                    }
                },
                "actions": [
                    {
                        "title": "Start My Server",
                        "href": "/compute/996ad860-2a9a-504f-8861-aeafd0b2ae29?action=start",
                        "category": "http://schemas.ogf.org/occi/infrastructure/compute/action#start"
                    }
                ],
                "id": "9930",
                "title": "Compute resource",
                "summary": "This is a compute resource"
            }
        ]
    }
    
  • partial_update_resource.json:

    {
        "resources": [
            {
                "attributes": {
                    "occi": {
                        "compute": {
                            "speed": 5,
                            "cores": 2
                        }
                    }
                }
            }
        ]
    }
    
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