In the current release, a topics management in QCG Notification is relatively simple. The first step is a preparation of an XML document with a Topic Namespace definition. This step can be done by one of the peers cooperating with QCG Notification. Then the document should be delivered to the computer where QCG Notification is installed. It can be done in two ways: the document may be copied manually by QCG Notification administrator to TopicNamespaces directory in prior to a QCG Notification startup or it can be send through the QCG Notification interface when QCG Notification is already runing. In the last case, the TopicNamespaces are stored also in a files in TopicNamespace directory so they can be automatically loaded after restart of the service. The TopicNamespaces loaded from files may be protected from unwanted removal by unseting write permissions for a certain file.
An XML document describing a sample topic namespace is presented in the Section 3.3.
To start QCG Notification as a daemon type:
$ ./qcg-ntfd
If you start QCG Notification with parameter -h you will get an optional parameters list:
$ ./qcg-ntfd -h usage: ./qcg-ntfd [-d] [-z config_file] -d do not detach and log to stderr -D do not detach and force logging at debug level to stderr -z config_file configuration file, default is /opt/qcg/etc/qcg-ntfd.xml -v print version information -h print this help
Once you run QCG Notification as a daemon, a log file is created. Using various log levels, you can log less or more details.