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Avoid nodeshell/noderun getting stuck on stdin

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Some applications will tend to hang on stdin if
stdin is readable. Provide /dev/null to suppress that behavior.
This commit is contained in:
Jarrod Johnson 2022-06-08 10:21:08 -04:00
parent 2f904d10e9
commit 0dcd1442c9
2 changed files with 8 additions and 4 deletions
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5
confluent_client/bin/noderun
View File

@ -35,9 +35,12 @@ if path.startswith('/opt'):
import confluent.client as client
import confluent.sortutil as sortutil
devnull = None
def run():
global devnull
devnull = open(os.devnull, 'rb')
argparser = optparse.OptionParser(
usage="Usage: %prog [options] <noderange> <command expression>",
epilog="Expressions are the same as in attributes, e.g. "
@ -133,7 +136,7 @@ def run():
def run_cmdv(node, cmdv, all, pipedesc):
try:
nopen = subprocess.Popen(
cmdv, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
cmdv, stdin=devnull, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
except OSError as e:
if e.errno == 2:
sys.stderr.write('{0}: Unable to find local executable file "{1}"'.format(node, cmdv[0]))

7
confluent_client/bin/nodeshell
View File

@ -34,10 +34,11 @@ if path.startswith('/opt'):
import confluent.client as client
import confluent.sortutil as sortutil
devnull = None
def run():
global devnull
devnull = open(os.devnull, 'rb')
argparser = optparse.OptionParser(
usage="Usage: %prog [options] noderange commandexpression",
epilog="Expressions are the same as in attributes, e.g. "
@ -172,7 +173,7 @@ def run():
def run_cmdv(node, cmdv, all, pipedesc):
nopen = subprocess.Popen(
cmdv, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
cmdv, stdin=devnull, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
pipedesc[nopen.stdout] = {'node': node, 'popen': nopen,
'type': 'stdout'}
pipedesc[nopen.stderr] = {'node': node, 'popen': nopen,