def run_and_capture(self):
"""
Run a command and capture exceptions. This is a blocking call
:returns: tuple of exitcode, error (or None)
:rtype: int, str | None
"""
subproc = Subproc().popen(
[self._executable, self._command] + self._args,
stderr=subprocess.PIPE)
err = ''
while subproc.poll() is None:
line = subproc.stderr.readline().decode('utf-8')
err += line
sys.stderr.write(line)
sys.stderr.flush()
exitcode = subproc.poll()
# We only want to catch exceptions, not other stderr messages
# (such as "task does not exist", so we look for the 'Traceback'
# string. This only works for python, so we'll need to revisit
# this in the future when we support subcommands written in other
# languages.
err = ('Traceback' in err and err) or None
return exitcode, err
def run_and_capture(self):
"""
Run a command and capture exceptions. This is a blocking call
:returns: tuple of exitcode, error (or None)
:rtype: int, str | None
"""
subproc = Subproc().popen(
[self._executable, self._command] + self._args,
stderr=subprocess.PIPE)
err = ''
while subproc.poll() is None:
line = subproc.stderr.readline().decode('utf-8')
err += line
sys.stderr.write(line)
sys.stderr.flush()
exitcode = subproc.poll()
# We only want to catch exceptions, not other stderr messages
# (such as "task does not exist", so we look for the 'Traceback'
# string. This only works for python, so we'll need to revisit
# this in the future when we support subcommands written in other
# languages.
err = ('Traceback' in err and err) or None
return exitcode, err
def _execute_command(command):
"""
:param command: a command to execute
:type command: list of str
:returns: stdout, stderr, the process return code
:rtype: str, str, int
"""
logger.info('Calling: %r', command)
process = Subproc().popen(
command,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
stdout, stderr = process.communicate()
if process.returncode != 0:
logger.error("Command script's stdout: %s", stdout)
logger.error("Command script's stderr: %s", stderr)
else:
logger.info("Command script's stdout: %s", stdout)
logger.info("Command script's stderr: %s", stderr)
return stdout, stderr, process.returncode
def _execute_command(command):
"""
:param command: a command to execute
:type command: list of str
:returns: stdout, stderr, the process return code
:rtype: str, str, int
"""
logger.info('Calling: %r', command)
process = Subproc().popen(
command,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
stdout, stderr = process.communicate()
if process.returncode != 0:
logger.error("Command script's stdout: %s", stdout)
logger.error("Command script's stderr: %s", stderr)
else:
logger.info("Command script's stdout: %s", stdout)
logger.info("Command script's stderr: %s", stderr)
return stdout, stderr, process.returncode
def info(executable_path, path_noun):
"""Collects subcommand information
:param executable_path: real path to the dcos subcommand
:type executable_path: str
:param path_noun: subcommand
:type path_noun: str
:returns: the subcommand information
:rtype: str
"""
out = Subproc().check_output([executable_path, path_noun, '--info'])
return out.decode('utf-8').strip()
def info(executable_path, path_noun):
"""Collects subcommand information
:param executable_path: real path to the dcos subcommand
:type executable_path: str
:param path_noun: subcommand
:type path_noun: str
:returns: the subcommand information
:rtype: str
"""
out = Subproc().check_output(
[executable_path, path_noun, '--info'])
return out.decode('utf-8').strip()
def config_schema(executable_path, noun=None):
"""Collects subcommand config schema
:param executable_path: real path to the dcos subcommand
:type executable_path: str
:param noun: name of subcommand
:type noun: str
:returns: the subcommand config schema
:rtype: dict
"""
if noun is None:
noun = noun(executable_path)
out = Subproc().check_output([executable_path, noun, '--config-schema'])
return json.loads(out.decode('utf-8'))
def config_schema(executable_path, noun=None):
"""Collects subcommand config schema
:param executable_path: real path to the dcos subcommand
:type executable_path: str
:param noun: name of subcommand
:type noun: str
:returns: the subcommand config schema
:rtype: dict
"""
if noun is None:
noun = noun(executable_path)
out = Subproc().check_output(
[executable_path, noun, '--config-schema'])
return json.loads(out.decode('utf-8'))