112 lines
3.4 KiB
Python
112 lines
3.4 KiB
Python
"""
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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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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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'dcos help --all' lists all available subcommands. See 'dcos <command> --help'
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to read about a specific subcommand.
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"""
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import os
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import subprocess
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import dcoscli
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import docopt
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from dcos.api import constants, emitting, subcommand, util
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emitter = emitting.FlatEmitter()
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def main():
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if not _is_valid_configuration():
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return 1
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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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err = util.configure_logger_from_environ()
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if err is not None:
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emitter.publish(err)
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return 1
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command = args['<command>']
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if not command:
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command = "help"
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executable, err = subcommand.command_executables(command, util.dcos_path())
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if err is not None:
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emitter.publish(err)
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return 1
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return subprocess.call([executable, command] + args['<args>'])
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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 _is_valid_configuration():
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"""Validates running environment
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:returns: True if the environment is configure correctly; False otherwise.
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:rtype: bool
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"""
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dcos_config = os.environ.get(constants.DCOS_CONFIG_ENV)
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if dcos_config is None:
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msg = 'Environment variable {!r} must be set to the DCOS config file.'
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emitter.publish(msg.format(constants.DCOS_CONFIG_ENV))
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return False
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if not os.path.isfile(dcos_config):
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msg = 'Environment variable {!r} maps to {!r} and it is not a file.'
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emitter.publish(msg.format(constants.DCOS_CONFIG_ENV, dcos_config))
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return False
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return True
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