108 lines
3.1 KiB
Markdown
108 lines
3.1 KiB
Markdown
# Clixon yang routing example
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## Compile and run
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```
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cd example
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make && sudo make install
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```
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Start backend:
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```
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clixon_backend -f /usr/local/etc/routing.conf -I
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```
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Edit cli:
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```
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clixon_cli -f /usr/local/etc/routing.conf
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```
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Send netconf command:
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```
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clixon_netconf -f /usr/local/etc/routing.conf
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```
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## Setting data example using netconf
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```
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<rpc><edit-config><target><candidate/></target><config>
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<interfaces>
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<interface>
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<name>eth1</name>
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<enabled>true</enabled>
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<ipv4>
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<address>
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<ip>9.2.3.4</ip>
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<prefix-length>24</prefix-length>
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</address>
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</ipv4>
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</interface>
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</interfaces>
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</config></edit-config></rpc>]]>]]>
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```
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## Getting data using netconf
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```
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<rpc><get-config><source><candidate/></source></get-config></rpc>]]>]]>
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<rpc><get-config><source><candidate/></source><filter/></get-config></rpc>]]>]]>
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<rpc><get-config><source><candidate/></source><filter type="xpath"/></get-config></rpc>]]>]]>
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<rpc><get-config><source><candidate/></source><filter type="subtree"><configuration><interfaces><interface><ipv4/></interface></interfaces></configuration></filter></get-config></rpc>]]>]]>
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<rpc><get-config><source><candidate/></source><filter type="xpath" select="/interfaces/interface/ipv4"/></get-config></rpc>]]>]]>
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<rpc><validate><source><candidate/></source></validate></rpc>]]>]]>
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```
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## Creating notification
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The example has an example notification triggering every 10s. To start a notification
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stream in the session, create a subscription:
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```
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<rpc><create-subscription><stream>ROUTING</stream></create-subscription></rpc>]]>]]>
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<rpc-reply><ok/></rpc-reply>]]>]]>
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<notification><event>Routing notification</event></notification>]]>]]>
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<notification><event>Routing notification</event></notification>]]>]]>
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...
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```
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This can also be triggered via the CLI:
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```
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cli> notify
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cli> Routing notification
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Routing notification
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...
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```
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## Extending
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Clixon has an extension mechanism which can be used to make extended internal
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netconf messages to the backend configuration engine. You may need this to
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make some special operation that is not covered by standard
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netconf functions. The example has a simple "echo" downcall
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mechanism that simply echoes what is sent down and is included for
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reference. A more realistic downcall would perform some action, such as
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reading some status.
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Example:
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```
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cli> downcall "This is a string"
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This is a string
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```
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## State data
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Netconf <get> and restconf GET also returns state data, in contrast to
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config data.
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In YANG state data is specified with "config false;". In the example, interface-state is state data.
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To return state data, you need to write a backend state data callback
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with the name "plugin_statedata" where you return an XML tree with
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state. This is then merged with config data by the system.
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pA static example of returning state data is in the example. Note that
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a real example would poll or get the interface counters via a system
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call, as well as use the "xpath" argument to identify the requested
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state data.
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## Run as docker container
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```
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cd docker
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# look in README
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```
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