def perform_operation(args):
if not os.path.exists(CURRENT_SCHEDULER):
update_current_scheduler("none")
# Initialise snapshot scheduler on local node
if args.action == "init":
ret = initialise_scheduler()
if ret != 0:
output("Failed to initialise snapshot scheduling")
gf_event (eventtypes.SNAPSHOT_SCHEDULER_INIT_FAILED,
error=print_error(ret))
return ret
# Disable snapshot scheduler
if args.action == "disable_force":
ret = disable_scheduler()
if ret == 0:
subprocess.Popen(["touch", "-h", GCRON_TASKS])
gf_event (eventtypes.SNAPSHOT_SCHEDULER_DISABLED,
status="Successfuly Disabled")
else:
gf_event (eventtypes.SNAPSHOT_SCHEDULER_DISABLE_FAILED,
error=print_error(ret))
return ret
# Check if the symlink to GCRON_TASKS is properly set in the shared storage
if (not os.path.lexists(GCRON_UPDATE_TASK) or
not os.path.lexists(GCRON_CROND_TASK) or
os.readlink(GCRON_CROND_TASK) != GCRON_TASKS):
print_str = ("Please run 'snap_scheduler.py' init to initialise "
"the snap scheduler for the local node.")
log.error(print_str)
output(print_str)
ret = NODE_NOT_INITIALISED
return ret
# Check status of snapshot scheduler.
if args.action == "status":
ret = scheduler_status()
if ret == 0:
if scheduler_enabled:
output("Snapshot scheduling status: Enabled")
else:
output("Snapshot scheduling status: Disabled")
else:
output("Failed to check status of snapshot scheduler")
return ret
# Enable snapshot scheduler
if args.action == "enable":
ret = enable_scheduler()
if ret == 0:
subprocess.Popen(["touch", "-h", GCRON_TASKS])
gf_event (eventtypes.SNAPSHOT_SCHEDULER_ENABLED,
status="Successfuly Enabled")
else:
gf_event (eventtypes.SNAPSHOT_SCHEDULER_ENABLE_FAILED,
error=print_error(ret))
return ret
# Disable snapshot scheduler
if args.action == "disable":
ret = disable_scheduler()
if ret == 0:
subprocess.Popen(["touch", "-h", GCRON_TASKS])
gf_event (eventtypes.SNAPSHOT_SCHEDULER_DISABLED,
status="Successfuly Disabled")
else:
gf_event (eventtypes.SNAPSHOT_SCHEDULER_DISABLE_FAILED,
error=print_error(ret))
return ret
# List snapshot schedules
if args.action == "list":
ret = list_schedules()
return ret
# Add snapshot schedules
if args.action == "add":
ret = syntax_checker(args)
if ret != 0:
return ret
ret = add_schedules(args.jobname, args.schedule, args.volname)
if ret == 0:
subprocess.Popen(["touch", "-h", GCRON_TASKS])
gf_event (eventtypes.SNAPSHOT_SCHEDULER_SCHEDULE_ADDED,
status="Successfuly added job "+args.jobname)
else:
gf_event (eventtypes.SNAPSHOT_SCHEDULER_SCHEDULE_ADD_FAILED,
status="Failed to add job "+args.jobname,
error=print_error(ret))
return ret
# Delete snapshot schedules
if args.action == "delete":
ret = syntax_checker(args)
if ret != 0:
return ret
ret = delete_schedules(args.jobname)
if ret == 0:
subprocess.Popen(["touch", "-h", GCRON_TASKS])
gf_event (eventtypes.SNAPSHOT_SCHEDULER_SCHEDULE_DELETED,
status="Successfuly deleted job "+args.jobname)
else:
gf_event (eventtypes.SNAPSHOT_SCHEDULER_SCHEDULE_DELETE_FAILED,
status="Failed to delete job "+args.jobname,
error=print_error(ret))
return ret
# Edit snapshot schedules
if args.action == "edit":
ret = syntax_checker(args)
if ret != 0:
return ret
ret = edit_schedules(args.jobname, args.schedule, args.volname)
if ret == 0:
subprocess.Popen(["touch", "-h", GCRON_TASKS])
gf_event (eventtypes.SNAPSHOT_SCHEDULER_SCHEDULE_EDITED,
status="Successfuly edited job "+args.jobname)
else:
gf_event (eventtypes.SNAPSHOT_SCHEDULER_SCHEDULE_EDIT_FAILED,
status="Failed to edit job "+args.jobname,
error=print_error(ret))
return ret
ret = INVALID_ARG
return ret
def perform_operation(args):
if not os.path.exists(CURRENT_SCHEDULER):
update_current_scheduler("none")
# Initialise snapshot scheduler on local node
if args.action == "init":
ret = initialise_scheduler()
if ret != 0:
output("Failed to initialise snapshot scheduling")
gf_event(eventtypes.SNAPSHOT_SCHEDULER_INIT_FAILED,
error=print_error(ret))
return ret
# Disable snapshot scheduler
if args.action == "disable_force":
ret = disable_scheduler()
if ret == 0:
subprocess.Popen(["touch", "-h", GCRON_TASKS])
gf_event(eventtypes.SNAPSHOT_SCHEDULER_DISABLED,
status="Successfuly Disabled")
else:
gf_event(eventtypes.SNAPSHOT_SCHEDULER_DISABLE_FAILED,
error=print_error(ret))
return ret
# Check if the symlink to GCRON_TASKS is properly set in the shared storage
if (not os.path.lexists(GCRON_UPDATE_TASK)
or not os.path.lexists(GCRON_CROND_TASK)
or os.readlink(GCRON_CROND_TASK) != GCRON_TASKS):
print_str = ("Please run 'snap_scheduler.py' init to initialise "
"the snap scheduler for the local node.")
log.error(print_str)
output(print_str)
ret = NODE_NOT_INITIALISED
return ret
# Check status of snapshot scheduler.
if args.action == "status":
ret = scheduler_status()
if ret == 0:
if scheduler_enabled:
output("Snapshot scheduling status: Enabled")
else:
output("Snapshot scheduling status: Disabled")
else:
output("Failed to check status of snapshot scheduler")
return ret
# Enable snapshot scheduler
if args.action == "enable":
ret = enable_scheduler()
if ret == 0:
subprocess.Popen(["touch", "-h", GCRON_TASKS])
gf_event(eventtypes.SNAPSHOT_SCHEDULER_ENABLED,
status="Successfuly Enabled")
else:
gf_event(eventtypes.SNAPSHOT_SCHEDULER_ENABLE_FAILED,
error=print_error(ret))
return ret
# Disable snapshot scheduler
if args.action == "disable":
ret = disable_scheduler()
if ret == 0:
subprocess.Popen(["touch", "-h", GCRON_TASKS])
gf_event(eventtypes.SNAPSHOT_SCHEDULER_DISABLED,
status="Successfuly Disabled")
else:
gf_event(eventtypes.SNAPSHOT_SCHEDULER_DISABLE_FAILED,
error=print_error(ret))
return ret
# List snapshot schedules
if args.action == "list":
ret = list_schedules()
return ret
# Add snapshot schedules
if args.action == "add":
ret = syntax_checker(args)
if ret != 0:
return ret
ret = add_schedules(args.jobname, args.schedule, args.volname)
if ret == 0:
subprocess.Popen(["touch", "-h", GCRON_TASKS])
gf_event(eventtypes.SNAPSHOT_SCHEDULER_SCHEDULE_ADDED,
status="Successfuly added job " + args.jobname)
else:
gf_event(eventtypes.SNAPSHOT_SCHEDULER_SCHEDULE_ADD_FAILED,
status="Failed to add job " + args.jobname,
error=print_error(ret))
return ret
# Delete snapshot schedules
if args.action == "delete":
ret = syntax_checker(args)
if ret != 0:
return ret
ret = delete_schedules(args.jobname)
if ret == 0:
subprocess.Popen(["touch", "-h", GCRON_TASKS])
gf_event(eventtypes.SNAPSHOT_SCHEDULER_SCHEDULE_DELETED,
status="Successfuly deleted job " + args.jobname)
else:
gf_event(eventtypes.SNAPSHOT_SCHEDULER_SCHEDULE_DELETE_FAILED,
status="Failed to delete job " + args.jobname,
error=print_error(ret))
return ret
# Edit snapshot schedules
if args.action == "edit":
ret = syntax_checker(args)
if ret != 0:
return ret
ret = edit_schedules(args.jobname, args.schedule, args.volname)
if ret == 0:
subprocess.Popen(["touch", "-h", GCRON_TASKS])
gf_event(eventtypes.SNAPSHOT_SCHEDULER_SCHEDULE_EDITED,
status="Successfuly edited job " + args.jobname)
else:
gf_event(eventtypes.SNAPSHOT_SCHEDULER_SCHEDULE_EDIT_FAILED,
status="Failed to edit job " + args.jobname,
error=print_error(ret))
return ret
ret = INVALID_ARG
return ret
try:
f = open(GCRON_TASKS, "w", 0644)
f.close()
except IOError as (errno, strerror):
log.error("Failed to open %s. Error: %s.", GCRON_TASKS, strerror)
ret = INIT_FAILED
return ret
if os.path.lexists(GCRON_CROND_TASK):
os.remove(GCRON_CROND_TASK)
os.symlink(GCRON_TASKS, GCRON_CROND_TASK)
log.info("Successfully initialised snapshot scheduler for this node")
output("Successfully initialised snapshot scheduler for this node")
gf_event (eventtypes.SNAPSHOT_SCHEDULER_INITIALISED, status="Success")
ret = 0
return ret
def syntax_checker(args):
if hasattr(args, 'jobname'):
if (len(args.jobname.split()) != 1):
output("Invalid Jobname. Jobname should not be empty and should not contain \" \" character.")
ret = INVALID_JOBNAME
return ret
args.jobname=args.jobname.strip()
if hasattr(args, 'volname'):
if (len(args.volname.split()) != 1):
try:
f = open(GCRON_TASKS, "w", 0644)
f.close()
except IOError as (errno, strerror):
log.error("Failed to open %s. Error: %s.", GCRON_TASKS, strerror)
ret = INIT_FAILED
return ret
if os.path.lexists(GCRON_CROND_TASK):
os.remove(GCRON_CROND_TASK)
os.symlink(GCRON_TASKS, GCRON_CROND_TASK)
log.info("Successfully initialised snapshot scheduler for this node")
output("Successfully initialised snapshot scheduler for this node")
gf_event(eventtypes.SNAPSHOT_SCHEDULER_INITIALISED, status="Success")
ret = 0
return ret
def syntax_checker(args):
if hasattr(args, 'jobname'):
if (len(args.jobname.split()) != 1):
output(
"Invalid Jobname. Jobname should not be empty and should not contain \" \" character."
)
ret = INVALID_JOBNAME
return ret
args.jobname = args.jobname.strip()
