def executeCommand(
cmd,
outputPath=None, # If given, throw if the file is not created. Don't run if it already exists.
suppressOutput=False, # If true, don't print anything!
redo=False): # If true, run even if outputPath already exists.
'''Executes a command with multiple options'''
if cmd == '': # An empty task
return False
# Convert the input to list format if needed
if not asp_string_utils.isNotString(cmd):
cmd = asp_string_utils.stringToArgList(cmd)
# Run the command if conditions are met
if redo or (not outputPath) or (not os.path.exists(outputPath)):
if suppressOutput: # Process silently
FNULL = open(os.devnull, 'w')
subprocess.call(cmd, stdout=FNULL, stderr=subprocess.STDOUT)
else: # Display output
print " ".join(cmd)
subprocess.call(cmd)
# Optionally check that the output file was created
if outputPath and (not os.path.exists(outputPath)):
raise asp_cmd_utils.CmdRunException('Failed to create output file: ' +
outputPath)
return True
def executeCommand(
cmd,
outputPath=None, # If given, throw if the file is not created. Don't run if it already exists.
suppressOutput=False, # If true, don't print anything!
redo=False, # If true, run even if outputPath already exists.
noThrow=False, # If true, don't throw if output is missing
numAttempts=1, # How many attempts to use
sleepTime=60, # How much to sleep between attempts
timeout=-1 # After how long to timeout in seconds
):
'''Executes a command with multiple options'''
# Initialize outputs
out = ""
status = 0
err = ""
if cmd == '': # An empty task
return (out, err, status)
# Convert the input to list format if needed
if not asp_string_utils.isNotString(cmd):
cmd = asp_string_utils.stringToArgList(cmd)
for attempt in range(numAttempts):
# Run the command if conditions are met
if redo or (outputPath is None) or (not os.path.exists(outputPath)):
if not suppressOutput:
print(asp_string_utils.argListToString(cmd))
if timeout > 0:
print("Will enforce timeout of " + str(timeout) + " seconds.")
signal.signal(signal.SIGALRM, timeout_alarm_handler)
signal.alarm(timeout)
try:
p = subprocess.Popen(cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
universal_newlines=True)
out, err = p.communicate()
status = p.returncode
if timeout > 0:
signal.alarm(0) # reset the alarm
except Exception as e:
out = ""
err = ('Error: %s: %s' %
(asp_string_utils.argListToString(cmd), e))
if timeout > 0:
# this module is generally not available, so this use is very niche
import psutil
def kill_proc_tree(pid, including_parent=True):
parent = psutil.Process(pid)
for child in parent.children(recursive=True):
print("Killing: " + str(child))
child.kill()
if including_parent:
print("Killing: " + str(parent))
parent.kill()
pid = psutil.Process(p.pid)
try:
kill_proc_tree(p.pid)
except:
pass
status = 1
if not noThrow:
raise Exception(err)
if out is None: out = ""
if err is None: err = ""
if not suppressOutput:
print(out + '\n' + err)
if status == 0:
break
if numAttempts <= 1:
break
if attempt < numAttempts - 1:
print("attempt: " + str(attempt))
print("ran: " + asp_string_utils.argListToString(cmd))
print("out = " + out)
print("err = " + err)
print("status = " + str(status))
print("Will sleep for " + str(sleepTime) + " seconds")
time.sleep(sleepTime)
else: # Output file already exists, don't re-run
out = ""
err = ""
status = 0
# Optionally check that the output file was created
if outputPath and (not os.path.exists(outputPath)) and (not noThrow):
raise asp_cmd_utils.CmdRunException(
'Failed to create output file: ' + outputPath)
return (out, err, status)
def executeCommand(
cmd,
outputPath=None, # If given, throw if the file is not created. Don't run if it already exists.
suppressOutput=False, # If true, don't print anything!
redo=False, # If true, run even if outputPath already exists.
noThrow=False, # If true, don't throw if output is missing
numAttempts=1, # How many attempts to use
sleepTime=60 # How much to sleep between attempts
):
'''Executes a command with multiple options'''
# Initialize outputs
out = ""
status = 0
err = ""
if cmd == '': # An empty task
return (out, err, status)
# Convert the input to list format if needed
if not asp_string_utils.isNotString(cmd):
cmd = asp_string_utils.stringToArgList(cmd)
for attempt in range(numAttempts):
# Run the command if conditions are met
if redo or (outputPath is None) or (not os.path.exists(outputPath)):
if not suppressOutput:
print asp_string_utils.argListToString(cmd)
try:
p = subprocess.Popen(cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
out, err = p.communicate()
status = p.returncode
except OSError as e:
out = ""
err = ('Error: %s: %s' %
(asp_string_utils.argListToString(cmd), e))
status = 1
if not noThrow:
raise Exception(err)
if out is None: out = ""
if err is None: err = ""
if not suppressOutput:
print out + '\n' + err
if status == 0:
break
if numAttempts <= 1:
break
if attempt < numAttempts - 1:
print("attempt: " + str(attempt))
print("ran: " + asp_string_utils.argListToString(cmd))
print("out = " + out)
print("err = " + err)
print("status = " + str(status))
print("Will sleep for " + str(sleepTime) + " seconds")
time.sleep(sleepTime)
else: # Output file already exists, don't re-run
out = ""
err = ""
status = 0
# Optionally check that the output file was created
if outputPath and (not os.path.exists(outputPath)) and (not noThrow):
raise asp_cmd_utils.CmdRunException(
'Failed to create output file: ' + outputPath)
return (out, err, status)