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docs: api: document newly added event signal to the D-Bus API

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Signed-off-by: Omer Faruk Bayram <omer.faruk@sartura.hr>
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Omer Faruk Bayram 2023-08-13 20:43:02 +00:00
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docs/api.md
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@ -206,11 +206,14 @@ curl --unix-socket /tmp/cloud-hypervisor.sock -i -X PUT 'http://localhost/api/v1
### D-Bus API
Cloud Hypervisor offers a D-Bus API as an alternative to its REST API. As of
writing this document, the D-Bus API mirrors the functionality of the REST
API and shares the same set of endpoints, meaning that it supports every call
that is supported by the REST API and can be a drop-in replacement since it
also consumes/produces JSON.
Cloud Hypervisor offers a D-Bus API as an alternative to its REST API. This
D-Bus API fully reflects the functionality of the REST API, exposing the
same group of endpoints. It can be a drop-in replacement since it also
consumes/produces JSON.
In addition, the D-Bus API also exposes events from `event-monitor` in the
form of a D-Bus signal to which users can subscribe. For more information,
see [D-Bus API Interface](#d-bus-api-interface).
#### D-Bus API Location and availability
@ -245,8 +248,23 @@ which in turn can be used to control and manage Cloud Hypervisor.
#### D-Bus API Interface
Please refer to the [REST API](#rest-api) documentation. As previously
mentioned, the D-Bus API currently mirrors the behaviour of the REST API.
Please refer to the [REST API](#rest-api) documentation for everything that
is in common with the REST API. As previously mentioned, the D-Bus API can
be used as a drop-in replacement for the [REST API](#rest-api).
The D-Bus interface also exposes a signal, named `Event`, which is emitted
whenever a new event is published from the `event-monitor` crate. Here is its
definition in XML format:
```xml
<node>
<interface name="org.cloudhypervisor.DBusApi1">
<signal name="Event">
<arg name="event" type="s"/>
</signal>
</interface>
</node>
```
### Command Line Interface