Scanner

This interface is intended for internal use only.

Scanner Interface

The scanner interface is based on two parts:

• Functions that need to be implemented by the scanner and are called by the server (init, start, exit)

• Functions passed in form of pointer from the server to the scanner (register event, push event)

scanner_initialize

Initialize the components needed for event scanning (e.g. check if temperature sensor interface exists and is accessible) and register one or more event types with the server.

Parameters: 1. struct scanner_callback* callback – contains function pointers for registering/pushing events to the event logging and management system 2. const void* config – TBD: data type 3. struct scanner_session** session – Output value

Returns: 0 for success or errorcode

scanner_start

Start scanning for events. This function will be executed inside a thread on the server side, so blocking reads and similiar features can be used.

Parameters: 1. struct scanner_session* session

Returns: 0 for success or errorcode

Note: This function won’t exit until an error occurs or the function is exited with the scanner_stop() call.

scanner_stop

Stops scanning for events. Will be called from outside the thread the _start functions runs in.

Parameters: 1. struct scanner_session* session

Returns: 0 for success or errorcode

scanner_free

Stop scanning for events (if not already stopped), free resources allocated during scanner_initialize.

Parameters: 1. struct scanner_session* session

Returns: 0 for success or errorcode