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