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confluent/confluent_client/bin/noderun
Jarrod Johnson 78dea26d06 Switch glob suppression to detection
The suppression was unable to be accomplished for bash without
somehow otherwise breaking the shell.  zsh and csh could be better at
one-off glob disabling though.
2017-11-13 11:49:40 -05:00

128 lines
4.4 KiB
Python
Executable File

#!/usr/bin/env python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2016-2017 Lenovo
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from collections import deque
import optparse
import os
import select
import shlex
import signal
import subprocess
import sys
try:
signal.signal(signal.SIGPIPE, signal.SIG_DFL)
except AttributeError:
pass
path = os.path.dirname(os.path.realpath(__file__))
path = os.path.realpath(os.path.join(path, '..', 'lib', 'python'))
if path.startswith('/opt'):
sys.path.append(path)
import confluent.client as client
import confluent.sortutil as sortutil
def run():
argparser = optparse.OptionParser(
usage="Usage: %prog noderange commandexpression",
epilog="Expressions are the same as in attributes, e.g. "
"'ipmitool -H {hardwaremanagement.manager}' will be expanded.")
argparser.add_option('-c', '--count', type='int', default=168,
help='Number of commands to run at a time')
# among other things, FD_SETSIZE limits. Besides, spawning too many
# processes can be unkind for the unaware on memory pressure and such...
argparser.disable_interspersed_args()
(options, args) = argparser.parse_args()
if len(args) < 2:
argparser.print_help()
sys.exit(1)
concurrentprocs = options.count
client.check_globbing(args[0])
c = client.Command()
cmdstr = " ".join(args[1:])
currprocs = 0
all = set([])
pipedesc = {}
pendingexecs = deque()
exitcode = 0
for exp in c.create('/noderange/{0}/attributes/expression'.format(args[0]),
{'expression': cmdstr}):
if 'error' in exp:
sys.stderr.write(exp['error'] + '\n')
exitcode |= exp.get('errorcode', 1)
ex = exp.get('databynode', ())
for node in ex:
cmd = ex[node]['value'].encode('utf-8')
cmdv = shlex.split(cmd)
if currprocs < concurrentprocs:
currprocs += 1
run_cmdv(node, cmdv, all, pipedesc)
else:
pendingexecs.append((node, cmdv))
if not all or exitcode:
sys.exit(exitcode)
rdy, _, _ = select.select(all, [], [], 10)
while all:
pernodeout = {}
for r in rdy:
desc = pipedesc[r]
node = desc['node']
data = True
while data and select.select([r], [], [], 0):
data = r.readline()
if data:
if desc['type'] == 'stdout':
if node not in pernodeout:
pernodeout[node] = []
pernodeout[node].append(data)
else:
sys.stderr.write('{0}: {1}'.format(node, data))
sys.stderr.flush()
else:
pop = desc['popen']
ret = pop.poll()
if ret is not None:
exitcode = exitcode | ret
all.discard(r)
if desc['type'] == 'stdout' and pendingexecs:
node, cmdv = pendingexecs.popleft()
run_cmdv(node, cmdv, all, pipedesc)
for node in sortutil.natural_sort(pernodeout):
for line in pernodeout[node]:
sys.stdout.write('{0}: {1}'.format(node, line))
sys.stdout.flush()
if all:
rdy, _, _ = select.select(all, [], [], 10)
sys.exit(exitcode)
def run_cmdv(node, cmdv, all, pipedesc):
nopen = subprocess.Popen(
cmdv, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
pipedesc[nopen.stdout] = {'node': node, 'popen': nopen,
'type': 'stdout'}
pipedesc[nopen.stderr] = {'node': node, 'popen': nopen,
'type': 'stderr'}
all.add(nopen.stdout)
all.add(nopen.stderr)
if __name__ == '__main__':
run()