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sams-collector.py
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sams-collector.py
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#!/usr/bin/env python
"""
Data Aggregator for SAMS Software accounting
SAMS Software accounting
Copyright (C) 2018-2021 Swedish National Infrastructure for Computing (SNIC)
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; If not, see <http://www.gnu.org/licenses/>.
"""
from __future__ import print_function
import json
import logging
import os
import platform
import signal
import sys
import threading
from optparse import OptionParser
import sams.core
from sams import __version__
logger = logging.getLogger(__name__)
id = "sams.collector"
class Main:
def __init__(self):
self.samplers = []
self.outputs = []
self.pidQueue = None
self.outQueue = None
# Options
parser = OptionParser()
parser.add_option(
"--version",
action="store_true",
dest="show_version",
default=False,
help="Show version",
)
parser.add_option(
"--config",
type="string",
action="store",
dest="config",
default="/etc/sams/sams-collector.yaml",
help="Config file [%default]",
)
parser.add_option(
"--logfile", type="string", action="store", dest="logfile", help="Log file"
)
parser.add_option(
"--loglevel",
type="string",
action="store",
dest="loglevel",
help="Loglevel",
)
parser.add_option(
"--jobid", type="int", action="store", dest="jobid", help="Slurm JobID"
)
parser.add_option(
"--node",
type="string",
action="store",
dest="node",
default=platform.node().split(".")[0],
help="Node name [%default]",
)
parser.add_option(
"--daemon",
action="store_true",
dest="daemon",
default=False,
help="Send to background as daemon",
)
parser.add_option(
"--pidfile", type="string", action="store", dest="pidfile", help="Pidfile"
)
parser.add_option(
"--test-output",
type="string",
action="store",
dest="testoutput",
help="path to json-data that is sent to output modules for testing",
)
(self.options, self.args) = parser.parse_args()
if self.options.show_version:
print("SAMS Software Accounting version %s" % __version__)
sys.exit(0)
if not self.options.jobid:
print("Missing option --jobid")
parser.print_help()
sys.exit(1)
self.config = sams.core.Config(
self.options.config,
{
"options": {
"jobid": self.options.jobid,
"node": self.options.node,
}
},
)
# Put process into background as daemon.
# stdout/stderr will be closed.
if self.options.daemon:
try:
sams.core.createDaemon(
umask=int(self.config.get([id, "umask"], "077"), 8)
)
except Exception as e:
logger.exception(e)
sys.exit(1)
# Logging
loglevel = self.options.loglevel
if not loglevel:
loglevel = self.config.get([id, "loglevel"], "ERROR")
if not loglevel:
loglevel = self.config.get(["common", "loglevel"], "ERROR")
loglevel_n = getattr(logging, loglevel.upper(), None)
if not isinstance(loglevel_n, int):
raise ValueError("Invalid log level: %s" % loglevel)
logfile = self.options.logfile
if not logfile:
logfile = self.config.get([id, "logfile"])
if not logfile:
logfile = self.config.get(["common", "logfile"])
if logfile:
logfile = logfile % {"jobid": self.options.jobid, "node": self.options.node}
logformat = self.config.get(
[id, "logformat"], "%(asctime)s %(name)s:%(levelname)s %(message)s"
)
if logfile:
logging.basicConfig(
filename=logfile, filemode="a", format=logformat, level=loglevel_n
)
else:
logging.basicConfig(format=logformat, level=loglevel_n)
logger.debug("Loglevel: %s", loglevel)
# Write pidfile.
if self.options.pidfile:
try:
with open(self.options.pidfile, "w") as f:
f.write(str(os.getpid()))
except Exception as e:
logger.exception(e)
sys.exit(1)
self.exit = threading.Event()
# Trap signals
signal.signal(signal.SIGHUP, self.sigHupHandler)
signal.signal(signal.SIGINT, self.sigHupHandler)
def sigHupHandler(self, signum, frame):
self.exit.set()
def cleanup(self):
# Tell all samplers to exit
for s in self.samplers:
s.exit()
# Wait for all samplers to finish
for s in filter(lambda t: t.is_alive(), self.samplers):
s.join()
# Tell all output to exit
for o in self.outputs:
o.exit()
# Wait for all outputs to finish
for o in filter(lambda t: t.is_alive(), self.outputs):
o.join()
# exit queues
self.pidQueue.exit()
self.outQueue.exit()
def test_output(self):
with open(self.options.testoutput) as json_file:
data = json.load(json_file)
for o in self.config.get([id, "outputs"], []):
logger.info("Load: %s", o)
try:
Output = sams.core.ClassLoader.load(o, "Output")
output = Output(o, self.config)
output.store(data)
output.write()
except Exception as e:
logger.error("Failed to initialize: %s", o)
logger.exception(e)
sys.exit(1)
def start(self):
self.pidQueue = sams.core.OneToN("pidQueue")
self.outQueue = sams.core.OneToN("outQueue")
for o in self.config.get([id, "outputs"], []):
logger.info("Load: %s", o)
try:
Output = sams.core.ClassLoader.load(o, "Output")
output = Output(o, self.config)
self.outputs.append(output)
self.outQueue.addQueue(output.dataQueue)
output.start()
except Exception as e:
logger.error("Failed to initialize: %s", o)
logger.exception(e)
self.cleanup()
sys.exit(1)
for s in self.config.get([id, "samplers"], []):
logger.info("Load: %s", s)
try:
Sampler = sams.core.ClassLoader.load(s, "Sampler")
sampler = Sampler(s, self.outQueue.inQueue, self.config)
self.samplers.append(sampler)
self.pidQueue.addQueue(sampler.pidQueue)
sampler.start()
except Exception as e:
logger.error("Failed to initialize: %s", s)
logger.exception(e)
self.cleanup()
sys.exit(1)
# load PIDFinder class
PidFinder = sams.core.ClassLoader.load(
self.config.get([id, "pid_finder"]), "PIDFinder"
)
try:
pid_finder = PidFinder(
self.config.get([id, "pid_finder"]), self.options.jobid, self.config
)
except Exception as e:
logger.error(
"Failed to initialize: %s", self.config.get([id, "pid_finder"])
)
logger.error(e)
self.cleanup()
sys.exit(1)
while not self.exit.is_set() and not pid_finder.done():
pids = pid_finder.find()
if pids:
self.pidQueue.put(pids)
self.exit.wait(self.config.get([id, "pid_finder_update_interval"], 30))
self.cleanup()
if __name__ == "__main__":
main = Main()
if main.options.testoutput:
main.test_output()
else:
main.start()