Installing pagure's EventSource server

======================================

Eventsource or Server Sent Events are messages sent from a server to a web

browser. It allows to refresh a page "live", ie, without the need to reload

it entirely.

Configure your system

---------------------

The eventsource server is easy to set-up.

* Installed the required dependencies

::

    python-redis

    python-trollius

    python-trollius-redis

    systemd

..note: This last one is necessary if you want to use the service file provided.

        Otherwise, you will have to write your own.

* Install the files of the SSE server as follow:

+----------------------------------------+-----------------------------------------------------+

|              Source                    |                   Destination                       |

+========================================+=====================================================+

| ``ev-server/pagure-stream-server.py``  | ``/usr/libexec/pagure-ev/pagure-stream-server.py``  |

+----------------------------------------+-----------------------------------------------------+

| ``ev-server/pagure_ev.service``        | ``/usr/lib/systemd/system/pagure_ev.service``       |

+----------------------------------------+-----------------------------------------------------+

The first file is the script of the SSE server itself.

The second file is the systemd service file.

* Finally, activate the service and ensure it's started upon boot:

::

    systemctl enable redis

    systemctl start redis

    systemctl enable pagure_ev

    systemctl start pagure_ev