Due to a ransomware attack, the wiki was reverted to a July 2022 version. . We apologize for the lack of a more recent valid backup.
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Name | Organization | Email |
|---|---|---|
| Adarsh M | Huawei Technologies | adarsh.m@huawei.com |
| Bharat Saraswal | Huawei Technologies | bharat.saraswal@huawei.com |
| Brian O'Connor | OnLab | bocon@onlab.us |
| Gaurav Agrawal | Huawei Technologies | gaurav.agrawal@huawei.com |
| Janani B | Huawei Technologies | janani.b@huawei.com |
| Patrick Liu | Huawei Technologies | Partick.Liu@huawei.com |
| Ray Milkey | OnLab | ray@onlab.us |
| Sathish Kumar M | Huawei Technologies | sathishkumar.m@huawei.com |
| Shankara | Huawei Technologies | |
| Sonu Gupta | Huawei Technologies | sonu.gupta@huawei.com |
| Suchitra H N | Huawei Technologies | suchitra.hn@huawei.com |
| Thomas Vachuska | OnLab | tom@onlab.us |
| Vidyashree Rama | Huawei Technologies | vidyashree.rama@huawei.com |
| Vinod Kumar S | Huawei Technologies | vinods.kumar@huawei.com |
YANG Tools Overview
YANG
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Tools
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is
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a
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infrastructure
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project
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aiming
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to
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develop
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necessary
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tool
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chain
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and
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libraries
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providing
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support
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of
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NETCONF
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and
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YANG
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for
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Java(JVM-language
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based)
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projects
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and
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applications.
In
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ONOS,
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YANG
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is
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being
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used
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as
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a
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general
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purpose
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modeling
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language.
There
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are
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four
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entities
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which
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drive
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this:
Model
YangCompiler
YangSerializer
YangRunTime
Model
Base Models will be used by different YANG components. It includes following:
DataNode: Provides a basis for holding information in a tree whose structure corresponds to a set of YANG models (base & augmentations).
- Is immutable.
- Provides a mechanism for mutation (Builder pattern, etc.)
- Understands the schema that was used to construct it.
- Store will be based on DataNode.
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- Inner node represents container and list.
- Leaf node represents leaf and leaf-list.
ResourceId: Resource identifier, Its list of node key to drive path till the resource, where key is contains the local node name and
the corresponding module namespace.
- Is immutable.
- Provides a mechanism for mutation (Builder pattern, etc.)
- Used to operate on a given resource.
ModelObject: Provides a common basis for all POJOs which are generated from a YANG model.
- It is mutable.
- The binding between ModelObject POJO and DataNode is performed by the YANG Runtime.
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Links the various Intra File/Inter-File/ Inter-JAR YANG constructs dependencies. For ex: grouping and uses linking, typedef and type linking. Import, imclude depencency.
Translator
Generates
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java
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code
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corresponding
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to
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Data
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model.
For
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more
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information
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please
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refer
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https://wiki.onosproject.org/display/ONOS/YANG+utils
In a nutshell, the process takes a set of YANG files and compiles them into a set of Java classes along with the compiled schema metadata and
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The following depicts the compilation process:
For
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more
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information
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please
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refer
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https://wiki.onosproject.org/display/ONOS/YANG+Compiler
YANG Live Compiler
Allows
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on-the-fly
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compilation
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&
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registration
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of
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YANG
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models.
YANG Serializers
Serializers
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is
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an
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entity
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capable
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of
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encoding
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and
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decoding
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arbitrary
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structures(Data
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Node),
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which
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are
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in-memory
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representations
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of
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YANG
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models,
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to
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and
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from
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various
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external
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representations,
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e.g.
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XML,
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JSON.
It
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decodes
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the
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external
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representation
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of
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a
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configuration
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model
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from
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the
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specified
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composite
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stream
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into
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an
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in-memory
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representation.
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Resource
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identifier
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stream
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"URI"
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will
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get
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decoded
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to
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resource
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identifier
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and
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resource
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data
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stream
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will
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get
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decoded
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to
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data
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node.
It
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encodes
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the
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internal
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in-memory
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representation
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of
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a
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configuration
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model
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to
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an
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external
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representation
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consumable
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from
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the
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resulting
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input
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stream.
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Resource
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identifier
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in
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composite
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data
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will
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get
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encoded
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to
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resource
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identifier
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stream
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and
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data
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node
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will
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be
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encoded
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to
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resource
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data
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stream.
Facilities to convert Input stream to DataNode and vice versa.
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https://wiki.onosproject.org/display/ONOS/L3VPNFuture
To
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be
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planned:
1)
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YANG
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1.1
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version.
2)
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OpenConfig
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YANG
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integration
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to
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ONOS.
3)
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YANG
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Library
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based
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on
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RFC
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7895.
4)
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YANG
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GUI
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enhancement
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for
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live
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compilation.