root / kamaki / cli / one_command.py @ cfba9587
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# Copyright 2012-2013 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.command
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from kamaki.cli import ( |
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get_command_group, set_command_params, print_subcommands_help, exec_cmd, |
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update_parser_help, _groups_help, _load_spec_module, |
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init_cached_authenticator, kloger) |
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from kamaki.cli.errors import CLIUnknownCommand |
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def _get_cmd_tree_from_spec(spec, cmd_tree_list): |
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for tree in cmd_tree_list: |
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if tree.name == spec:
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return tree
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raise CLIUnknownCommand('Unknown command: %s' % spec) |
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def _get_best_match_from_cmd_tree(cmd_tree, unparsed): |
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matched = [term for term in unparsed if not term.startswith('-')] |
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while matched:
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try:
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return cmd_tree.get_command('_'.join(matched)) |
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except KeyError: |
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matched = matched[:-1]
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return None |
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def run(cloud, parser, _help): |
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group = get_command_group(list(parser.unparsed), parser.arguments)
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if not group: |
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#parser.parser.print_help()
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parser.print_help() |
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_groups_help(parser.arguments) |
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exit(0) |
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nonargs = [term for term in parser.unparsed if not term.startswith('-')] |
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set_command_params(nonargs) |
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global _best_match
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_best_match = [] |
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_cnf = parser.arguments['config']
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group_spec = _cnf.get('global', '%s_cli' % group) |
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spec_module = _load_spec_module(group_spec, parser.arguments, '_commands')
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if spec_module is None: |
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raise CLIUnknownCommand(
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'Could not find specs for %s commands' % group,
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details=[ |
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'Make sure %s is a valid command group' % group,
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'Refer to kamaki documentation for setting custom command',
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'groups or overide existing ones'])
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cmd_tree = _get_cmd_tree_from_spec(group, spec_module._commands) |
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if _best_match:
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cmd = cmd_tree.get_command('_'.join(_best_match))
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else:
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cmd = _get_best_match_from_cmd_tree(cmd_tree, parser.unparsed) |
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_best_match = cmd.path.split('_')
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if cmd is None: |
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kloger.info('Unexpected error: failed to load command (-d for more)')
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exit(1) |
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update_parser_help(parser, cmd) |
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if _help or not cmd.is_command: |
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if cmd.cmd_class:
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parser.required = getattr(cmd.cmd_class, 'required', None) |
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parser.print_help() |
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if getattr(cmd, 'long_help', False): |
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print 'Details:\n', cmd.long_help |
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print_subcommands_help(cmd) |
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exit(0) |
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cls = cmd.cmd_class |
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auth_base = init_cached_authenticator(_cnf, cloud, kloger) if (
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cloud) else None |
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executable = cls(parser.arguments, auth_base, cloud) |
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parser.required = getattr(cls, 'required', None) |
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parser.update_arguments(executable.arguments) |
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for term in _best_match: |
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parser.unparsed.remove(term) |
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exec_cmd(executable, parser.unparsed, parser.print_help) |