name : part-handler-v2.txt #part-handler # vi: syntax=python ts=4 # this is an example of a version 2 part handler. # the differences between the initial part-handler version # and v2 is: # * handle_part receives a 5th argument, 'frequency' # frequency will be either 'always' or 'per-instance' # * handler_version must be set # # A handler declaring version 2 will be called on all instance boots, with a # different 'frequency' argument. handler_version = 2 def list_types(): # return a list of mime-types that are handled by this module return(["text/plain", "text/go-cubs-go"]) def handle_part(data, ctype, filename, payload, frequency): # data: the cloudinit object # ctype: '__begin__', '__end__', or the specific mime-type of the part # filename: the filename for the part, or dynamically generated part if # no filename is given attribute is present # payload: the content of the part (empty for begin or end) # frequency: the frequency that this cloud-init run is running for # this is either 'per-instance' or 'always'. 'per-instance' # will be invoked only on the first boot. 'always' will # will be called on subsequent boots. if ctype == "__begin__": print(f"my handler is beginning, frequency={frequency}") return if ctype == "__end__": print(f"my handler is ending, frequency={frequency}") return print(f"==== received ctype={ctype} filename={filename} ====") print(payload) print(f"==== end ctype={ctype} filename={filename}")