ansible/bin/ansible

#!/usr/bin/env python

# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.

########################################################
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type

__requires__ = ['ansible']
try:
    import pkg_resources
except Exception:
    # Use pkg_resources to find the correct versions of libraries and set
    # sys.path appropriately when there are multiversion installs.  But we
    # have code that better expresses the errors in the places where the code
    # is actually used (the deps are optional for many code paths) so we don't
    # want to fail here.
    pass

import os
import sys
import traceback

from ansible.errors import AnsibleError, AnsibleOptionsError, AnsibleParserError
from ansible.utils.display import Display
from ansible.utils.unicode import to_unicode


########################################
### OUTPUT OF LAST RESORT ###
class LastResort(object):
    def display(self, msg):
        print(msg, file=sys.stderr)

    def error(self, msg, wrap_text=None):
        print(msg, file=sys.stderr)


########################################

if __name__ == '__main__':

    display = LastResort()
    cli = None
    me = os.path.basename(sys.argv[0])

    try:
        display = Display()
        display.debug("starting run")

        sub = None
        try:
            if me.find('-') != -1:
                target = me.split('-')
                if len(target) > 1:
                    sub = target[1]
                    myclass = "%sCLI" % sub.capitalize()
                    mycli = getattr(__import__("ansible.cli.%s" % sub, fromlist=[myclass]), myclass)
            elif me == 'ansible':
                from ansible.cli.adhoc import AdHocCLI as mycli
            else:
                raise AnsibleError("Unknown Ansible alias: %s" % me)
        except ImportError as e:
            if e.message.endswith(' %s' % sub):
                raise AnsibleError("Ansible sub-program not implemented: %s" % me)
            else:
                raise

        cli = mycli(sys.argv)
        cli.parse()
        sys.exit(cli.run())

    except AnsibleOptionsError as e:
        cli.parser.print_help()
        display.error(to_unicode(e), wrap_text=False)
        sys.exit(5)
    except AnsibleParserError as e:
        display.error(to_unicode(e), wrap_text=False)
        sys.exit(4)
# TQM takes care of these, but leaving comment to reserve the exit codes
#    except AnsibleHostUnreachable as e:
#        display.error(str(e))
#        sys.exit(3)
#    except AnsibleHostFailed as e:
#        display.error(str(e))
#        sys.exit(2)
    except AnsibleError as e:
        display.error(to_unicode(e), wrap_text=False)
        sys.exit(1)
    except KeyboardInterrupt:
        display.error("User interrupted execution")
        sys.exit(99)
    except Exception as e:
        have_cli_options = cli is not None and cli.options is not None
        display.error("Unexpected Exception: %s" % to_unicode(e), wrap_text=False)
        if not have_cli_options or have_cli_options and cli.options.verbosity > 2:
            display.display(u"the full traceback was:\n\n%s" % to_unicode(traceback.format_exc()))
        else:
            display.display("to see the full traceback, use -vvv")
        sys.exit(250)