def update_blocks_monitors(self):
"""Updates the monitors for the blocks and groups, so the clients can see any changes.
"""
with self.monitor_lock:
# Blocks
bn = convert_to_json(self._active_configserver.get_blocknames())
self.setParam(BlockserverPVNames.BLOCKNAMES, compress_and_hex(bn))
# Groups
# Update the PV, so that groupings are updated for any CA monitors
grps = ConfigurationJsonConverter.groups_to_json(self._active_configserver.get_group_details())
self.setParam(BlockserverPVNames.GROUPS, compress_and_hex(grps))
# Update them
self.updatePVs()
def read(self, reason):
"""A method called by SimpleServer when a PV is read from the BlockServer over Channel Access.
Args:
reason (string): The PV that is being requested (without the PV prefix)
Returns:
string : A compressed and hexed JSON formatted string that gives the desired information based on reason.
If an Exception is thrown in the reading of the information this is returned in compressed and hexed JSON.
"""
try:
if reason == BlockserverPVNames.GROUPS:
grps = ConfigurationJsonConverter.groups_to_json(self._active_configserver.get_group_details())
value = compress_and_hex(grps)
elif reason == BlockserverPVNames.CONFIGS:
value = compress_and_hex(convert_to_json(self._config_list.get_configs()))
elif reason == BlockserverPVNames.COMPS:
value = compress_and_hex(convert_to_json(self._config_list.get_components()))
elif reason == BlockserverPVNames.BLANK_CONFIG:
js = convert_to_json(self.get_blank_config())
value = compress_and_hex(js)
elif reason == BlockserverPVNames.BUMPSTRIP_AVAILABLE:
value = compress_and_hex(self.bumpstrip)
elif reason == BlockserverPVNames.BANNER_DESCRIPTION:
value = compress_and_hex(self.banner.get_description())
else:
# Check to see if it is a on-the-fly PV
for handler in self.on_the_fly_handlers:
if handler.read_pv_exists(reason):
return handler.handle_pv_read(reason)
value = self.getParam(reason)
except Exception as err:
value = compress_and_hex(convert_to_json("Error: " + str(err)))
print_and_log(str(err), "MAJOR")
return value