Elektra  0.9.4
Plugin: zeromqsend

This plugin is a notification plugin, which sends notifications using ZeroMq publish (ZMQ_PUB) sockets when the key database (KDB) has been modified. It is compatible with the sending zeromqrecv plugin.

The recommended way is to globally mount the plugin together with the zeromqrecv plugin:

kdb global-mount zeromqsend zeromqrecv

This plugin is designed to be used as a transport plugin for Elektra's notification feature. Since ZeroMq creates threads for asynchronous I/O this plugin always operates asynchronously.

Since ZeroMQ sockets only provide a 1:n mapping (i.e. one publisher with many subscribers or one subscriber and many publishers) the zeromqsend and zeromqrecv plugins require a XPUB/XSUB endpoint. The kdb tool "hub-zeromq" provides these endpoints.

Transport Plugin

Mount this plugin globally with default settings to use it as sending transport plugin for Elektra's notification feature:

kdb global-mount zeromqsend

Configuration

This plugin supports the following configuration options when mounting:

Notification Format

The ZeroMQ transport plugins use the publish/subscribe sockets (ZMQ_PUB and ZMQ_SUB) for notification transport.

Each notification is a multipart message. The first part contains the type of change, the second part contains the name of the changed key.

Possible only current change is Commit.