code cleanup for argparse support (addresses #33)
* remove unused code from CliCommand class * improve parameter handling in BackendTo constructor * return entity in BackendEntityHandler's create method * add a default value for country in ClientCli * pass dictionary from parsed arguments to ClientHandler's create method * correctly handle special chars in ClientCli output
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b8139e91f2
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4 changed files with 33 additions and 174 deletions
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@ -58,6 +58,7 @@ class BackendEntityHandler(object):
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sess.rollback()
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self.logger.exception("Exception in create.")
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raise
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return entity
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def fetchall(self, **kwargs):
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"""Fetches all entities of the managed entity type."""
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@ -26,13 +26,14 @@ class BackendTo(object):
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"""Backend transfer object class."""
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def __init__(self, config, **kwargs):
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cols = object_mapper(self).local_table.columns.keys()
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for (key, value) in kwargs.items():
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self.__setattr__(key, unicode(value, 'utf8'))
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if key in cols and value is not None:
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self.__setattr__(key, unicode(value, 'utf8'))
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def __repr__(self, **kwargs):
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if 'verbose' in kwargs and kwargs['verbose']:
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cols = [col for col in \
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object_mapper(self).local_table.columns.keys()]
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cols = object_mapper(self).local_table.columns.keys()
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format = "%(class)s:"
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format = format + ", ".join([col + "=%(" + col + ")s" for col in \
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cols])
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@ -25,181 +25,38 @@ from gnuviechadmin.exceptions import GnuviechadminError
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class CliCommand(object):
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"""Base class for command line interface.
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"""
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Base class for command line interface.
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A specific implementation class must define the fields name,
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description and _optionmap.
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The field name is the name of the subcommand.
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The field description is a short, one line description of the
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command.
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The field _optionmap is a map which maps the subcommand names to
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lists of tuples. Each tuple consists of four elements. The first
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element is a list of command line arguments, short arguments start
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with dash, long arguments with a double dash. The second element
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is the name of the field in the data map of the command, it will
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directly be sent to the underlying entity. The third field is a
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description for the group of command line options in field
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one. The fourth field is True for mandatory fields and False
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otherwise.
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A specific implementation class must implement the static
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setup_arparser method and the _execute method.
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"""
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def _usage(self):
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"""This method shows usage information. The implementation
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relies on the information in the fields name, description and
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_optionmap in the implementation classes."""
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return """GNUViechAdmin command line interface
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@staticmethod
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def setup_argparser(subparsers):
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"""
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This static method is used to initialize the command line
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argument parser.
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Subcommand: %(command)s
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%(description)s
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Usage:
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%(called)s %(command)s -h|--help
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gives this usage information.
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Common options:
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%(option)s
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%(mandatory)s %(optiondesc)s
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""" % {'called': sys.argv[0],
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'command': self.name,
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'description': self.description,
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'option': '-v, --verbose',
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'optiondesc': 'verbose operation',
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'mandatory': " "}
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for commandname in self._optionmap.keys():
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cmdl = "%(called)s %(command)s %(subcommand)s [-v|--verbose]" % {
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'called': sys.argv[0],
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'command': self.name,
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'subcommand': commandname}
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desc = """
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%s
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""" % (self._optionmap[commandname][0])
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for (options, field, optiondesc, mandatory) in \
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self._optionmap[commandname][1]:
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cmd = " "
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pairs = []
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for option in options:
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if field:
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if option.startswith("--"):
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pairs.append("%s=<%s>" % (option, field))
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else:
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pairs.append("%s <%s>" % (option, field))
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else:
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pairs.append(option)
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if not mandatory:
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cmd = cmd + "["
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cmd = cmd + "|".join(pairs)
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if not mandatory:
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cmd = cmd + "]"
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descmap = {
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'option': ", ".join(pairs),
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'optiondesc': optiondesc,
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'mandatory': ' '}
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if mandatory:
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descmap['mandatory'] = '*'
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desc = desc + """ %(option)s
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%(mandatory)s %(optiondesc)s
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""" % descmap
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if (len(cmdl) + len(cmd)) > 79:
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print cmdl
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cmdl = cmd
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else:
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cmdl = cmdl + cmd
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print cmdl
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print desc
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print "Mandatory options are marked with *"
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def _subcommands(self):
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"""Convenience method for retrieving the subcommand names from
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the _optionmap field."""
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return self._optionmap.keys()
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def _longopts(self, subcommand):
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"""This method retrieves available long options in a format
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valid for getopt.gnu_getopt(...) from the _optionmap field."""
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longopts = []
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for cur in [(option[0], option[1]) for option in \
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self._optionmap[subcommand][1]]:
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for command in cur[0]:
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if command.startswith("--"):
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if cur[1]:
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longopts.append(command[2:] + "=")
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else:
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longopts.append(command[2:])
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return longopts
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def _shortopts(self, subcommand):
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"""This method retrieves available short options in a format
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valid for getopt.gnu_getopt(...) from the _optionmap field."""
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shortopts = ""
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for cur in [(option[0], option[1]) for option in \
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self._optionmap[subcommand][1]]:
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for command in cur[0]:
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if not command.startswith("--"):
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if cur[1]:
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shortopts = shortopts + command[1:] + ":"
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else:
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shortopts = shortopts + command[1:]
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return shortopts
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def _checkrequired(self, subcommand):
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"""Checks whether the required fields of the given subcommand
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are set."""
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reqcheck = [True, []]
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for req in [option for option in \
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self._optionmap[subcommand][1] if option[3]]:
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if not req[1] in self._data:
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reqcheck[0] = False
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reqcheck[1].append(""" %s
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* %s""" % (", ".join(req[0]), req[2]))
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return reqcheck
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def _handleoption(self, subcommand, o, a):
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"""Handles a command line option by assigning it to the
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matching key as defined in the _optionmap property of the
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implementation class."""
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optionmap = [(option[0], option[1]) for option in \
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self._optionmap[subcommand][1]]
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if optionmap:
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for (options, datakey) in optionmap:
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if o in options:
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self._data[datakey] = a
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def _execute(self, subcommand):
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"""This method is called when the subcommand of the command is
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executed."""
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The method has to be overridden by subclasses.
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"""
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raise NotImplementedError
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def _parseopts(self, subcommand, args):
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"""This method parses the options given on the command line."""
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longopts = ["help", "verbose"]
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longopts.extend(self._longopts(subcommand))
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try:
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opts, args = getopt.gnu_getopt(
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args,
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"hv" + self._shortopts(subcommand),
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longopts)
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except getopt.GetoptError:
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self._usage()
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sys.exit(2)
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self._verbose = False
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for o, a in opts:
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if o in ("-v", "--verbose"):
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self._verbose = True
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if o in ("-h", "--help"):
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self._usage()
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sys.exit()
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self._handleoption(subcommand, o, a)
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def _execute(self):
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"""
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This method is called when the subcommand of the command is
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executed.
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The method has to be overridden by subclasses.
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"""
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raise NotImplementedError
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def __init__(self, args, config):
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"""This initializes the command with the given command line
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arguments and executes it."""
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"""
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This initializes the command with the given command line
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arguments and executes it.
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"""
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self.config = config
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self.args = args
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self.logger = logging.getLogger("%s.%s" % (
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@ -60,7 +60,7 @@ class ClientCli(CliCommand.CliCommand):
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help = _("the city of the client's address"))
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cmdparser.add_argument(
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'--country',
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help = _("the client's country"))
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help = _("the client's country"), default='de')
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cmdparser.add_argument(
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'-e', '--email', required = True,
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help = _("the client's email address"))
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@ -91,9 +91,9 @@ class ClientCli(CliCommand.CliCommand):
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ch = ClientHandler(self.config, self.args.verbose)
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if self.args.subcommand == "create":
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try:
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myclient = ch.create(**self.args)
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myclient = ch.create(**self.args.__dict__)
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if self.args.verbose:
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print myclient
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print unicode(myclient).encode('utf8')
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except CreationFailedError, cfe:
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self._usage()
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print cfe
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@ -101,7 +101,7 @@ class ClientCli(CliCommand.CliCommand):
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elif self.args.subcommand == "list":
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clients = ch.fetchall()
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for client in clients:
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print client
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print unicode(client).encode('utf8')
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elif self.args.subcommand == "delete":
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ch.delete(self.args.clientid)
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