def run(self):
"""The run method for this worker task.
:return: None
:rtype: None
"""
logger.info('{0} filling in {1} from {2} to {3} in steps of {4}'.format(repr(self), self.rrd_name, self.from_ts, self.to_ts, self.step))
self.rrd_init(self.rrd_name, self.from_ts - self.step, self.step)
counter = 0
top = None
try:
# Populate the database with some 'fake' data
for ts in range(int(self.from_ts), int(self.to_ts), int(self.step)):
if not counter % 100: # Update the Linux top data at every 100 points
top = com.mitel.pyrate.resmon_util.execute_top()
total = (self.to_ts - self.from_ts)/self.step
logger.info('{0} data generation progress = {1} of {2}, {3}%'.
format(repr(self), counter, total, 100.0*(float(counter) / float(total))))
if top: # Now update the resource utilisation stats to the RRDs
self.rrd_update(self.rrd_name, top, ts)
else:
logger.error('{0} failed to acquire result from top, exit'.format(repr(self)))
break
counter += 1
logger.info('{0} completed'.format(repr(self)))
except BaseException as e:
logger.error('{0} encountered unexpected {1} at {2}'.format(repr(self), e, traceback.format_tb(sys.exc_info()[2])))
def main(args):
"""Main entry point of this program.
:param args: The command-line argument list
:return: Exit code
:rtype: int
"""
parser = argparse.ArgumentParser(prog='resmon.py', description='Monitor the system resource utilisation, periodically')
top = parser
group1 = top.add_argument_group()
group1.add_argument('-n', metavar='name', help='Name of the resource monitoring session, artifacts will follow this'
' name', type=str)
group1.add_argument('-p', metavar='period', help='The sampling period of the monitoring process. E.g. 10s, 1m, 2h.'
' Default is 1m', default='1m', type=str)
group2 = top.add_argument_group()
group2.add_argument('-l', help='List all the resmon databases found in the working directory and return.',
action='count')
arg = parser.parse_args(args)
if arg.l:
print(execute_list_dbs())
return 0
if not arg.n:
logger.error('No name specified')
return errno.EINVAL
if arg.p:
period = parse_timespec(arg.p)
else:
period = 60 # Default period is 1m
monitor = start_monitor(arg.n, period)
try:
while 1: # Run until stopped
# Wake up periodically and do something, like kicking a watchdog or something like that, not sure what yet.
sleep(600)
except KeyboardInterrupt:
logger.info('User interrupted')
return errno.EINTR
finally:
monitor.stop()
logger.info('resmon terminated')
return errno.EINVAL # If we are here we were interrupted by something other than KeyboardInterrupt
def __call__(self):
"""The run entry for the worker thread."""
try:
self.run() # Sub-classes must implement this.
except IOError as e:
logger.warning('{0} encountered {1} at {2}'.format(repr(self), e, traceback.format_tb(sys.exc_info()[2])))
except BaseException as e:
logger.error("{0} encountered unexpected {1} at {2}".format(repr(self), e, traceback.format_tb(sys.exc_info()[2])))
finally:
# Make sure everything is properly reset
with self._lock:
self._runFlag = False
self.stopWaiting.set()
def generate_graph(img_file, start_ts, end_ts, title, width, height, data_defs):
"""Generate a graph for the specific RRD.
:param img_file: The name of the image file to be generated (use '-' to send it to stdout)
:type img_file: str
:param start_ts: The start time of the graph
:type start_ts: int
:param end_ts: The end time of the graph
:type end_ts: int
:param width: The width of the graph, in number of pixels
:type width: int
:param height: The height of the graph, in number of pixels
:type height: int
:param data_defs: A series of one or more data definition, e.g. DEF:ds=abc.rrd:dataX:AVERAGE...
:type data_defs: [str]
:return: None
:rtype: None
"""
try:
# Force img_file to str since rrdtool doesn't like Unicode or other kinds of strings
args = [str(img_file), '--start', str(int(start_ts)), '--end', str(int(end_ts)), '--imgformat', 'PNG', '--title', str(title),
'--slope-mode', '--full-size-mode']
if width:
args += ['-w', str(int(width))]
if height:
args += ['-h', str(int(height))]
args += data_defs
rrdtool.graph(*args)
except BaseException as e:
logger.error('Encountered unexpected {0} at {1}'.format(e, traceback.format_tb(sys.exc_info()[2])))
def main(args):
"""Main entry to program.
:param args: Parsed command-line args.
:return: Exit code.
"""
try:
start_ts = (int(time.time()) / _step) * _step # TS should be aligned with the period
# Step 1: Start the monitoring
if (not os.path.exists(_base_name + 'cpu.rrd')) or (not os.path.exists(_base_name + 'mem.rrd')):
fill_in_the_rrds(_base_name + 'cpu.rrd', _base_name + 'mem.rrd', start_ts - (24 * 3600), start_ts, _step)
else:
fill_in_the_rrds(_base_name + 'cpu.rrd', _base_name + 'mem.rrd',
int(rrdutil.get_last_update(_base_name + 'cpu.rrd')) + _step, start_ts, _step)
monitor = resmon_util.start_monitor(_base_name, _step)
try:
prev_ts = start_ts
for loop in range(0, 360): # Run for an hour (360 loops of 10 seconds).
# Step 2: Wait for some time (10s) for the monitor to gather data
logger.info('Waiting for data, loop #{0}'.format(loop))
time.sleep(10)
# Step 3: Observe the result
last_cpu_data = rrdutil.fetch_last_data(monitor.get_cpu_rrd(), start_ts=prev_ts, resolution=1)
last_mem_data = rrdutil.fetch_last_data(monitor.get_mem_rrd(), start_ts=prev_ts)
# Print out the result
print('\nLAST CPU data {0}, curr time = {1}'.format(last_cpu_data[0], int(time.time())))
print(rrdutil.format_cpu_stats(last_cpu_data))
print('\nLAST Memory data {0}'.format(last_mem_data[0]))
print(rrdutil.format_mem_stats(last_mem_data))
prev_ts = (int(time.time()) / _step) * _step # TS should be aligned with the period
avg_data = rrdutil.fetch_avg_data(monitor.get_cpu_rrd(), start_ts=start_ts, resolution=10)
print('\nAVG CPU data {0}'.format(avg_data[0]))
print(rrdutil.format_cpu_stats(avg_data))
avg_data = rrdutil.fetch_avg_data(monitor.get_mem_rrd(), start_ts=start_ts, resolution=10)
print('\nAVG Memory data {0}'.format(avg_data[0]))
print(rrdutil.format_mem_stats(avg_data))
finally:
# Don't forget to stop the monitor when finish
logger.info('Stopping {0}'.format(monitor))
monitor.stop()
# Generate a graph
end_graf = time.time()
start_graf = end_graf - (2 * SECONDS_IN_HOUR)
gen_graph('cpu.png', rrd_name=monitor.get_cpu_rrd(), title='CPU Utilisation', cf='AVERAGE',
start_ts=start_graf, end_ts=end_graf,
dataset=[('idle', '%Idle'), ('wait', '%Wait'), ('load', 'Load avg')])
gen_graph('mem.png', rrd_name=monitor.get_mem_rrd(), title='Memory Utilisation', cf='AVERAGE',
start_ts=start_graf, end_ts=end_graf,
dataset=[('memtotal', 'Total'), ('memfree', 'Free'), ('buffers', 'Buffers'),
('cached', 'Cached')])
except (TypeError, ValueError) as e:
logger.warning('Encountered invalid monitor period {0}, at {1}'.format(e, format_tb(sys.exc_info()[2])))
except KeyboardInterrupt:
logger.warning('User interruption at {0}'.format(format_tb(sys.exc_info()[2])))
except BaseException as e:
logger.error('Encountered unexpected exception {0} at {1}'.format(repr(e), format_tb(sys.exc_info()[2])))