OpenSRF offers a very simple Application development API to users of the framework. All that is required is to create a Perl module that subclasses the OpenSRF::Application package and register it's methods with the Method Dispatcher framework.
Each method executes in the OpenSRF::Application namespace as an instance of the custom Application. There are some instance methods on this object which can be used by the method to alter the behavior or response that the method sends to the client:
$self->api_name # returns the name of the method as called by the client $self->method # returns the actual perl name of the sub implementing the # method my $meth = $self->method_lookup( 'api_name' ) # constructs a new instance object implementing another # method in the same Application package as a subrequest my ($subresult) = $meth->run( @params ) # runs the subrequest method and returns the array of # results
All that is required to register an Application with OpenSRF is to place a setting in the configuration file that names the module that implements the new Application, and to add the new Application's symbolic name to the list of servers that should be started by OpenSRF. See Appendix A for more information on the central config file.
See here for a simple example server.