Synnefo » ./kamaki

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from sys import stdout

from kamaki.cli import command

from kamaki.cli.argument import FlagArgument

from kamaki.cli.commands import _command_init, errors

from kamaki.cli.command_tree import CommandTree

from kamaki.cli.errors import CLIError, CLISyntaxError

config_cmds = CommandTree('config', 'Kamaki configurations')

_commands = [config_cmds]

about_options = '\nAbout options:\

    \n. syntax: [group.]option\

    \n. example: global.log_file\

    \n. special case: <option> is equivalent to global.<option>\

    \n. configuration file syntax:\

    \n.   [group]\

    \n.   option=value\

    \n.   (more options can be set per group)\

    \n.\

    \n. special case: named clouds.\

    \n. example: cloud.demo.url\

    \n. E.g. for a cloud "demo":\

    \n.   [cloud "demo"]\

    \n.   url = <http://single/authentication/url/for/demo/site>\

    \n.   token = <auth_token_from_demo_site>'

@command(config_cmds)

class config_list(_command_init):

    """List all configuration options

    FAQ:

    Q: I haven't set any options!

    A: Defaults are used (override with /config set )

    Q: There are more options than I have set

    A: Default options remain if not explicitly replaced or deleted

    """

    @errors.generic.all

    def _run(self):

        for section in sorted(self.config.sections()):

            items = self.config.items(section)

            for key, val in sorted(items):

                if section in ('cloud',):

                    prefix = '%s.%s' % (section, key)

                    for k, v in val.items():

                        self.writeln('%s.%s = %s' % (prefix, k, v))

                else:

                    self.writeln('%s.%s = %s' % (section, key, val))

    def main(self):

        self._run()

@command(config_cmds)

class config_get(_command_init):

    """Show a configuration option"""

    __doc__ += about_options

    @errors.generic.all

    def _run(self, option):

        section, sep, key = option.rpartition('.')

        if not sep:

            match = False

            for k in self.config.keys(key):

                match = True

                if option != 'cloud':

                    self.write('%s.%s =' % (option, k))

                self._run('%s.%s' % (option, k))

            if match:

                return

            section = 'global'

        prefix = 'cloud.'

        get, section = (

            self.config.get_cloud, section[len(prefix):]) if (

                section.startswith(prefix)) else (self.config.get, section)

        value = get(section, key)

        if isinstance(value, dict):

            for k, v in value.items():

                self.writeln('%s.%s.%s = %s' % (section, key, k, v))

        elif value:

            self.writeln(value)

    def main(self, option):

        self._run(option)

@command(config_cmds)

class config_set(_command_init):

    """Set a configuration option"""

    __doc__ += about_options

    @errors.generic.all

    def _run(self, option, value):

        section, sep, key = option.rpartition('.')

        prefix = 'cloud.'

        if section.startswith(prefix):

            cloudname = section[len(prefix):]

            if cloudname:

                self.config.set_cloud(cloudname, key, value)

            else:

                raise CLISyntaxError(

                    'Empty cloud alias (%s)' % option, importance=2)

        elif section in ('cloud',):

            raise CLISyntaxError(

                'Invalid syntax for cloud definition', importance=2, details=[

                    'To define a cloud "%s"' % key,

                    'set the cloud\'s authentication url and token:',

                    '  /config set cloud.%s.url <URL>' % key,

                    '  /config set cloud.%s.token <t0k3n>' % key])

        else:

            section = section or 'global'

            self.config.set(section, key, value)

        self.config.write()

        self.config.reload()

    def main(self, option, value):

        self._run(option, value)

@command(config_cmds)

class config_delete(_command_init):

    """Delete a configuration option

    Default values are not removed by default. To alter this behavior in a

    session, use --default.

    """

    arguments = dict(

        default=FlagArgument(

            'Remove default value as well (persists until end of session)',

            '--default')

    )

    @errors.generic.all

    def _run(self, option):

        section, sep, key = option.rpartition('.')

        section = section or 'global'

        prefix = 'cloud.'

        if section.startswith(prefix):

            cloud = section[len(prefix):]

            try:

                self.config.remove_from_cloud(cloud, key)

            except KeyError:

                raise CLIError('Field %s does not exist' % option)

        else:

            self.config.remove_option(section, key, self['default'])

        self.config.write()

        self.config.reload()

    def main(self, option):

        self._run(option)