Rivendellaudio/docs/apis/notification.xml
Fred Gleason af0ac339a6 2018-03-24 Fred Gleason <fredg@paravelsystems.com>
* Added a 'LogType' value to the 'RDNotification::Type
	enumeration.
	* Added support for notifications to rdlogedit(1).
2018-03-24 15:47:20 -04:00

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XML

<?xml version="1.0" encoding="ISO-8859-1"?>
<article xmlns="http://docbook.org/ns/docbook" version="5.0">
<info>
<title>Rivendell Notification Protocol</title>
<author>
<personname>
<firstname>Fred</firstname>
<surname>Gleason</surname>
<email>fredg@paravelsystems.com</email>
</personname>
</author>
</info>
<sect1 xml:id="overview">
<title>Overview</title>
<para>
This defines the IP protocol used to notify Rivendell components of
changes to the state of database objects. Messages are send by means
of multicast UDP packets to port 20539.
</para>
<para>
The format of a message is as follows:
</para>
<para>
NOTIFY <replaceable choice='req'>obj-type</replaceable>
<replaceable choice='req'>action</replaceable>
<replaceable choice='req'>id</replaceable>
</para>
<variablelist>
<varlistentry>
<term>
<replaceable>obj-type</replaceable>
</term>
<listitem>
<para>
The object type to which the message pertains.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<replaceable>action</replaceable>
</term>
<listitem>
<para>
The action being reported. The following actions are defined:
</para>
<variablelist>
<varlistentry>
<term>
ADD
</term>
<listitem>
<para>
The referenced object has just been added to the database.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
DELETE
</term>
<listitem>
<para>
The referenced object has just been deleted from the database.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
MODIFY
</term>
<listitem>
<para>
The reference object has just been modified in the database.
</para>
</listitem>
</varlistentry>
</variablelist>
</listitem>
</varlistentry>
<varlistentry>
<term>
<replaceable>id</replaceable>
</term>
<listitem>
<para>
Unique id of the object.
</para>
</listitem>
</varlistentry>
</variablelist>
</sect1>
<sect1 xml:id="sect.object_types">
<title>Object Types</title>
<para>
The following object types are defined:
</para>
<sect2 xml:id="sect.object_types.cart">
<title>Carts</title>
<para>
<userinput>CART</userinput>
</para>
<table xml:id="table.object_types.carts" frame="all" pgwide="0">
<title>Cart Fields</title>
<tgroup cols="2" align="left" colsep="1" rowsep="1">
<colspec colname="Field" colwidth="2.0*"/>
<colspec colname="Value" colwidth="10.0*"/>
<tbody>
<row><entry>Field</entry><entry>Value</entry></row>
<row><entry>obj-type</entry><entry>CART</entry></row>
<row><entry>id</entry><entry>Cart number</entry></row>
<row><entry>type</entry><entry>Unsigned Integer</entry></row>
</tbody>
</tgroup>
</table>
</sect2>
<sect2 xml:id="sect.object_types.log">
<title>Logs</title>
<para>
<userinput>LOG</userinput>
</para>
<table xml:id="table.object_types.logs" frame="all" pgwide="0">
<title>Log Fields</title>
<tgroup cols="2" align="left" colsep="1" rowsep="1">
<colspec colname="Field" colwidth="2.0*"/>
<colspec colname="Value" colwidth="10.0*"/>
<tbody>
<row><entry>Field</entry><entry>Value</entry></row>
<row><entry>obj-type</entry><entry>LOG</entry></row>
<row><entry>id</entry><entry>Log name</entry></row>
<row><entry>type</entry><entry>String</entry></row>
</tbody>
</tgroup>
</table>
</sect2>
</sect1>
</article>