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OCCI XML representation
OCCI XML representation
OCCI XML representation
OCCI XML representation
OCCI XML representation
OCCI XML representation
OCCI XML representation
OCCI XML representation
OCCI XML representation
OCCI XML representation
OCCI XML representation
OCCI XML representation
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OCCI XML representation

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As a meta-model, OCCI Core should be described in a formalized way, machine-readable, as to be able to generate implementations. We present here an XML representation of OCCI extensions and types with …

As a meta-model, OCCI Core should be described in a formalized way, machine-readable, as to be able to generate implementations. We present here an XML representation of OCCI extensions and types with this objectives.

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  • 1. 1 This document is licensed under a Creative Commons Attribution 3.0 Unported License. Madrid, September 18th , 2013 Jean Parpaillon – Silkan Iain James Marshall – Prologue Jonathan Custance - OnApp OCCI XML representation
  • 2. 22 This document is licensed under a Creative Commons Attribution 3.0 Unported License. September 18th, 2013 Cloud Interoperability Week Background ✔ CompatibleOne : an open source cloud brokering platform ✔ Based on OCCI ✔ With extensions: manifest, configuration, user, security, etc. ✔ Use XML for ✔ Storage ✔ Validation: categories described as XML schema (XSD)
  • 3. 33 This document is licensed under a Creative Commons Attribution 3.0 Unported License. September 18th, 2013 Cloud Interoperability Week Current extensions specs ✔ Free text + UML schemas ✔ Attributes types: string, numbers ✔ Attributes multiplicity: required, optional ✔ No attributes default value
  • 4. 4 Objectives Formal specifications (machine readable, including doc) «Design once, implement everywhere » Implementation generation Attributes types specifications Range Patterns Complex types Rendering for XML based protocol (XMPP)
  • 5. 55 This document is licensed under a Creative Commons Attribution 3.0 Unported License. September 18th, 2013 Cloud Interoperability Week XML reminder ✔ Formal constraint description: XML schemas ✔ Validation ✔ Transformation ✔ XSLT: XML to XML, XML to text ✔ Query ✔ XPATH ✔ Parsing ✔ Tree based, event based, ...
  • 6. 66 This document is licensed under a Creative Commons Attribution 3.0 Unported License. September 18th, 2013 Cloud Interoperability Week XML schema proposal (1) ✔ An XML schema to describe OCCI types ✔ Kind, Mixin, Action, Resource, Link ✔ Top-level elements: ✔ Extension (kind+, mixin+): for extensions ✔ Objects (kind+, mixin+, action+, resource+, link+): for rendering
  • 7. 7 OCCI type description <xs:complexType name="kindType"> <xs:sequence> <xs:element name="rel" type="occi:relatedType" minOccurs="1" maxOccurs="1" /> <xs:element name="attribute" type="occi:attributeSpecType" minOccurs="0" maxOccurs="unbounded" /> <xs:element name="action" type="occi:actionSpecType" minOccurs="0" maxOccurs="unbounded" /> </xs:sequence> <xs:attributeGroup ref="occi:categoryGroup"></xs:attributeGroup> <xs:attribute name="location" type="xs:anyURI"></xs:attribute> </xs:complexType> <occi:kind term="network" scheme="http://schemas.ogf.org/occi/core#" title="Network Resource"> <occi:rel scheme="http://schemas.ogf.org/occi/core#" term="resource" /> <occi:attribute name="occi.network.vlan" type="occi:vlanType" /> <occi:attribute name="occi.network.label" type="xs:string" /> <occi:attribute name="occi.network.state" type="xs:string" immutable="true" use="required" default="inactive"> <xs:simpleType> <xs:restriction base="xs:string"> <xs:enumeration value="active" /> <xs:enumeration value="inactive" /> </xs:restriction> </xs:simpleType> </occi:attribute> <occi:action scheme="http://schemas.ogf.org/occi/core/network#" term="up"></occi:action> <occi:action scheme="http://schemas.ogf.org/occi/core/network#" term="down"></occi:action> </occi:kind> OCCI types schema OCCI type description
  • 8. 8 OCCI entity rendering <occi:link id="urn:uuid:c78774ae-264b-405b-b5ae-db6d2486ff8d" source="/compute/996ad860-2a9a-504f-8861-aeafd0b2ae29" target="/network/1cbc522b-eff3-4ea7-ab53-d91ad7c34b7f"> <occi:kind term="networkinterface" scheme="http://schemas.ogf.org/occi/infrastructure#" /> <occi:mixin term="ipnetworkinterface" scheme="http://schemas.ogf.org/occi/infrastructure/networkinterface#" /> <occi:attribute name="occi.infrastructure.networkinterface.interface" value="eth0" /> <occi:attribute name="occi.infrastructure.networkinterface.mac" value="00:ae:ff:23:43:12" /> <occi:attribute name="occi.infrastructure.networkinterface.address" value="192.168.0.100" /> <occi:attribute name="occi.infrastructure.networkinterface.gateway" value="192.168.0.1" /> <occi:attribute name="occi.infrastructure.networkinterface.allocation" value="dynamic" /> <occi:action term="up" scheme="http://schemas.ogf.org/occi/infrastructure/networkinterface/action#" /> </occi:link> Link entity rendering w/ mixin
  • 9. 99 This document is licensed under a Creative Commons Attribution 3.0 Unported License. September 18th, 2013 Cloud Interoperability Week XML schema proposal (2) ✔ Attribute types: inherits XSD typing ✔ 44 base types: decimal, string, date, etc. ✔ Type extension ✔ Integer + 'undefined' ✔ Type restriction ✔ String pattern ✔ Number range
  • 10. 10 OCCI attribute type <xs:simpleType name="vlanType"> <xs:restriction base="xs:integer"> <xs:minInclusive value="0"></xs:minInclusive> <xs:maxInclusive value="4095"></xs:maxInclusive> </xs:restriction> </xs:simpleType> <xs:simpleType name="mac802"> <xs:restriction base="xs:string"> <xs:pattern value="[da-fA-F]{2}(:[da-fA-F]{2})5}" /> </xs:restriction> </xs:simpleType> 802.1q VLAN type MAC Address
  • 11. 1111 This document is licensed under a Creative Commons Attribution 3.0 Unported License. September 18th, 2013 Cloud Interoperability Week That's all ! ✔ Please comment, amend... implement ✔ Resources ✔ CompatibleOne project: http://www.compatibleone.org/ ✔ Updated XML schemas and examples: http://github.com/jeanparpaillon/occi-schemas ✔ E-mail: jean.parpaillon@free.fr
  • 12. 12 This document is licensed under a Creative Commons Attribution 3.0 Unported License. Thanks !

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