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| Table of Contents |
|---|
Overview
The following study describes extending YANG language statements to allow customization of models.
References:
Jira Legacy server System Jira serverId 4733707d-2057-3a0f-ae5e-4fd8aff50176 key CPS-735 - https://datatracker.ietf.org/doc/rfc8526/
- https://www.rfc-editor.org/rfc/rfc6095.html
- https://www.hjp.at/doc/rfc/rfc6020.html#sec_6.3.1
- https://docs.opendaylight.org/en/latest/release-notes/upgrade-process.html?highlight=extension%20annotation#unrecognized-yang-statement-handling
- https://datatracker.ietf.org/doc/html/rfc6110#section-9.4
- https://datatracker.ietf.org/doc/html/rfc8791
YANG Language
- The YANG language provides us the ability to define and model configurations and state data by defining YANG modules
- Modules contain a sequence of statements
- Statement syntax is either of the following :
- statement = keyword [argument] ;
- statement = keyword [argument] { <substatement(s)..> } ;
- Statement syntax is either of the following :
- Modules contain a sequence of statements
...
Figure 1.1 Schema tree of module 'stores'
| Code Block | ||||
|---|---|---|---|---|
| ||||
YANG extension Statement
** the YIN version and Schema trees above are generated by YANG validator 'pyang'
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- Contains interface which has methods to access data of a YANG extension statement
package org.opendaylight.yangtools.yang.model.api;
import org.opendaylight.yangtools.yang.model.api.stmt.ExtensionEffectiveStatement;
public interface ExtensionDefinition extends SchemaNode, EffectiveStatementEquivalent<ExtensionEffectiveStatement> {
String getArgument();
boolean isYinElement();
}- Implementing Class
- Class
- Implementing Class
References:
https://datatracker.ietf.org/doc/rfc8526/
https://www.rfc-editor.org/rfc/rfc6095.html
https://www.hjp.at/doc/rfc/rfc6020.html#sec_6.3.1
https://datatracker.ietf.org/doc/html/rfc6110#section-9.4
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