3e66e1246f
[FIX] fix from comment [FIX] use "Command Not Recognised. Usage below" instead "Please see Usage " [FIX] chenge message
155 lines
4.4 KiB
Python
155 lines
4.4 KiB
Python
"""
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Command line utility for the Mesosphere Datacenter Operating
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System (DCOS)
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'dcos help' lists all available subcommands. See 'dcos <command> --help'
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to read about a specific subcommand.
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Usage:
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dcos [options] [<command>] [<args>...]
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Options:
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--help Show this screen
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--version Show version
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--log-level=<log-level> If set then print supplementary messages to
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stderr at or above this level. The severity
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levels in the order of severity are: debug,
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info, warning, error, and critical. E.g.
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Setting the option to warning will print
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warning, error and critical messages to stderr.
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Note: that this does not affect the output sent
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to stdout by the command.
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--debug If set then enable further debug messages which
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are sent to stdout.
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Environment Variables:
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DCOS_LOG_LEVEL If set then it specifies that message should be
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printed to stderr at or above this level. See
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the --log-level option for details.
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DCOS_CONFIG This environment variable points to the
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location of the DCOS configuration file.
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[default: ~/.dcos/dcos.toml]
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DCOS_DEBUG If set then enable further debug messages which
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are sent to stdout.
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"""
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import os
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import signal
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import sys
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from functools import wraps
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from subprocess import PIPE, Popen
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import dcoscli
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import docopt
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from dcos import auth, constants, emitting, errors, http, subcommand, util
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from dcos.errors import DCOSException
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from dcoscli import analytics
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emitter = emitting.FlatEmitter()
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def main():
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try:
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return _main()
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except DCOSException as e:
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emitter.publish(e)
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return 1
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def _main():
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signal.signal(signal.SIGINT, signal_handler)
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args = docopt.docopt(
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__doc__,
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version='dcos version {}'.format(dcoscli.version),
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options_first=True)
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if not _config_log_level_environ(args['--log-level']):
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return 1
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_config_debug_environ(args['--debug'])
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util.configure_process_from_environ()
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if args['<command>'] != 'config' and \
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not auth.check_if_user_authenticated():
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auth.force_auth()
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command = args['<command>']
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http.silence_requests_warnings()
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if not command:
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command = "help"
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executable = subcommand.command_executables(command)
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subproc = Popen([executable, command] + args['<args>'],
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stderr=PIPE)
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return analytics.wait_and_track(subproc)
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def _config_log_level_environ(log_level):
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"""
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:param log_level: Log level to set
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:type log_level: str
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:returns: True if the log level was configured correctly; False otherwise.
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:rtype: bool
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"""
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if log_level is None:
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os.environ.pop(constants.DCOS_LOG_LEVEL_ENV, None)
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return True
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log_level = log_level.lower()
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if log_level in constants.VALID_LOG_LEVEL_VALUES:
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os.environ[constants.DCOS_LOG_LEVEL_ENV] = log_level
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return True
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msg = 'Log level set to an unknown value {!r}. Valid values are {!r}'
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emitter.publish(msg.format(log_level, constants.VALID_LOG_LEVEL_VALUES))
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return False
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def _config_debug_environ(is_debug):
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"""
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:param is_debug: If true then enable debug; otherwise disable debug
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:type is_debug: bool
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:rtype: None
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"""
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if is_debug:
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os.environ[constants.DCOS_DEBUG_ENV] = 'true'
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else:
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os.environ.pop(constants.DCOS_DEBUG_ENV, None)
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def signal_handler(signal, frame):
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emitter.publish(
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errors.DefaultError("User interrupted command with Ctrl-C"))
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sys.exit(0)
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def decorate_docopt_usage(func):
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"""Handle DocoptExit exception
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:param func: function
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:type func: function
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:return: wrapped function
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:rtype: function
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"""
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@wraps(func)
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def wrapper(*args, **kwargs):
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try:
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result = func(*args, **kwargs)
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except docopt.DocoptExit as e:
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emitter.publish("Command not recognized\n")
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emitter.publish(e)
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return 1
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return result
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return wrapper
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