|
|
|
|
|
""" |
|
|
|
|
|
Simple script that demonstrates how to use the epics.autosave module to |
|
|
save & restore PV values using request files and savefiles, like with synApps |
|
|
autosave (only via CA.) |
|
|
|
|
|
Run ./save_restore.py -h for a full usage summary. |
|
|
|
|
|
""" |
|
|
|
|
|
from optparse import * |
|
|
from epics.autosave import * |
|
|
|
|
|
def main(): |
|
|
(options, args) = get_validate_args() |
|
|
methods = { "restore" : do_restore, "save" : do_save } |
|
|
methods[options.mode](options.debug, args) |
|
|
|
|
|
def do_restore(debug, args): |
|
|
print "Restoring PVs from save file %s..." % (args[0]) |
|
|
if not restore_pvs(args[0], debug): |
|
|
sys.exit(1) |
|
|
|
|
|
def do_save(debug, args): |
|
|
print "Saving PVs in %s to save file %s..." % (args[0], args[1]) |
|
|
try: |
|
|
save_pvs(args[0], args[1], debug) |
|
|
except Exception,e: |
|
|
sys.exit("Failed to save pvs: %s" % e) |
|
|
|
|
|
def get_validate_args(): |
|
|
""" |
|
|
Parse and validate command-line arguments |
|
|
|
|
|
""" |
|
|
usage = "usage: %prog [options] [restore-file] save-file" |
|
|
parser = OptionParser(usage=usage, description="Save & restore EPICS pvs via Channel Access. Options --save & --restore are not required, if they are ommitted then the mode will be inferred from the number of arguments.") |
|
|
|
|
|
group = OptionGroup(parser, "Mode") |
|
|
group.add_option("-r", "--restore", action="store_const", const="restore", dest="mode", |
|
|
help="Restore PV values saved in <save-file>") |
|
|
group.add_option("-s", "--save", action="store_const", const="save", dest="mode", |
|
|
help="Save PV values in named in <restore-file> to <save-file>") |
|
|
parser.add_option_group(group) |
|
|
|
|
|
group = OptionGroup(parser, "Debug Options") |
|
|
group.add_option("-d", "--debug", dest="debug", action="store_true", |
|
|
help="Print each PV as it is saved/restored") |
|
|
parser.add_option_group(group) |
|
|
|
|
|
(options, args) = parser.parse_args() |
|
|
|
|
|
if options.mode is None and len(args) == 2: |
|
|
options.mode = "save" |
|
|
else: |
|
|
options.mode = "restore" |
|
|
|
|
|
if options.mode == "save": |
|
|
if len(args) != 2: |
|
|
parser.error("Saving pvs requires two arguments - restore-file save-file") |
|
|
elif options.mode == "restore": |
|
|
if len(args) != 1: |
|
|
parser.error("Restoring pvs requires one argument - save-file") |
|
|
else: |
|
|
parser.error("Unexpected command line arguments") |
|
|
return (options, args) |
|
|
|
|
|
if __name__ == "__main__": |
|
|
main() |
|
|
|
|
|
|
