Synnefo » ./kamaki

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#

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#      disclaimer.

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#      disclaimer in the documentation and/or other materials

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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

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from base64 import b64encode

from os.path import exists, expanduser

from io import StringIO

from pydoc import pager

from kamaki.cli import command

from kamaki.cli.command_tree import CommandTree

from kamaki.cli.utils import remove_from_items, filter_dicts_by_dict

from kamaki.cli.errors import (

    raiseCLIError, CLISyntaxError, CLIBaseUrlError, CLIInvalidArgument)

from kamaki.clients.cyclades import CycladesClient

from kamaki.cli.argument import (

    FlagArgument, ValueArgument, KeyValueArgument, RepeatableArgument,

    ProgressBarArgument, DateArgument, IntArgument)

from kamaki.cli.commands import _command_init, errors, addLogSettings

from kamaki.cli.commands import (

    _optional_output_cmd, _optional_json, _name_filter, _id_filter)

server_cmds = CommandTree('server', 'Cyclades/Compute API server commands')

flavor_cmds = CommandTree('flavor', 'Cyclades/Compute API flavor commands')

_commands = [server_cmds, flavor_cmds]

about_authentication = '\nUser Authentication:\

    \n* to check authentication: /user authenticate\

    \n* to set authentication token: /config set cloud.<cloud>.token <token>'

howto_personality = [

    'Defines a file to be injected to virtual servers file system.',

    'syntax:  PATH,[SERVER_PATH,[OWNER,[GROUP,[MODE]]]]',

    '  [local-path=]PATH: local file to be injected (relative or absolute)',

    '  [server-path=]SERVER_PATH: destination location inside server Image',

    '  [owner=]OWNER: virtual servers user id for the remote file',

    '  [group=]GROUP: virtual servers group id or name for the remote file',

    '  [mode=]MODE: permission in octal (e.g., 0777)',

    'e.g., -p /tmp/my.file,owner=root,mode=0777']

class _service_wait(object):

    wait_arguments = dict(

        progress_bar=ProgressBarArgument(

            'do not show progress bar', ('-N', '--no-progress-bar'), False)

    )

    def _wait(

            self, service, service_id, status_method, current_status,

            countdown=True, timeout=60):

        (progress_bar, wait_cb) = self._safe_progress_bar(

            '%s %s: status is still %s' % (

                service, service_id, current_status),

            countdown=countdown, timeout=timeout)

        try:

            new_mode = status_method(

                service_id, current_status, max_wait=timeout, wait_cb=wait_cb)

            if new_mode:

                self.error('%s %s: status is now %s' % (

                    service, service_id, new_mode))

            else:

                self.error('%s %s: status is still %s' % (

                    service, service_id, current_status))

        except KeyboardInterrupt:

            self.error('\n- canceled')

        finally:

            self._safe_progress_bar_finish(progress_bar)

class _server_wait(_service_wait):

    def _wait(self, server_id, current_status, timeout=60):

        super(_server_wait, self)._wait(

            'Server', server_id, self.client.wait_server, current_status,

            countdown=(current_status not in ('BUILD', )),

            timeout=timeout if current_status not in ('BUILD', ) else 100)

class _network_wait(_service_wait):

    def _wait(self, net_id, current_status, timeout=60):

        super(_network_wait, self)._wait(

            'Network', net_id, self.client.wait_network, current_status,

            timeout=timeout)

class _firewall_wait(_service_wait):

    def _wait(self, server_id, current_status, timeout=60):

        super(_firewall_wait, self)._wait(

            'Firewall of server',

            server_id, self.client.wait_firewall, current_status,

            timeout=timeout)

class _init_cyclades(_command_init):

    @errors.generic.all

    @addLogSettings

    def _run(self, service='compute'):

        if getattr(self, 'cloud', None):

            base_url = self._custom_url(service) or self._custom_url(

                'cyclades')

            if base_url:

                token = self._custom_token(service) or self._custom_token(

                    'cyclades') or self.config.get_cloud('token')

                self.client = CycladesClient(base_url=base_url, token=token)

                return

        else:

            self.cloud = 'default'

        if getattr(self, 'auth_base', False):

            cyclades_endpoints = self.auth_base.get_service_endpoints(

                self._custom_type('cyclades') or 'compute',

                self._custom_version('cyclades') or '')

            base_url = cyclades_endpoints['publicURL']

            token = self.auth_base.token

            self.client = CycladesClient(base_url=base_url, token=token)

        else:

            raise CLIBaseUrlError(service='cyclades')

    def main(self):

        self._run()

@command(server_cmds)

class server_list(_init_cyclades, _optional_json, _name_filter, _id_filter):

    """List virtual servers accessible by user

    Use filtering arguments (e.g., --name-like) to manage long server lists

    """

    PERMANENTS = ('id', 'name')

    arguments = dict(

        detail=FlagArgument('show detailed output', ('-l', '--details')),

        since=DateArgument(

            'show only items since date (\' d/m/Y H:M:S \')',

            '--since'),

        limit=IntArgument(

            'limit number of listed virtual servers', ('-n', '--number')),

        more=FlagArgument(

            'output results in pages (-n to set items per page, default 10)',

            '--more'),

        enum=FlagArgument('Enumerate results', '--enumerate'),

        flavor_id=ValueArgument('filter by flavor id', ('--flavor-id')),

        image_id=ValueArgument('filter by image id', ('--image-id')),

        user_id=ValueArgument('filter by user id', ('--user-id')),

        user_name=ValueArgument('filter by user name', ('--user-name')),

        status=ValueArgument(

            'filter by status (ACTIVE, STOPPED, REBOOT, ERROR, etc.)',

            ('--status')),

        meta=KeyValueArgument('filter by metadata key=values', ('--metadata')),

        meta_like=KeyValueArgument(

            'print only if in key=value, the value is part of actual value',

            ('--metadata-like')),

    )

    def _add_user_name(self, servers):

        uuids = self._uuids2usernames(list(set(

                [srv['user_id'] for srv in servers] +

                [srv['tenant_id'] for srv in servers])))

        for srv in servers:

            srv['user_id'] += ' (%s)' % uuids[srv['user_id']]

            srv['tenant_id'] += ' (%s)' % uuids[srv['tenant_id']]

        return servers

    def _apply_common_filters(self, servers):

        common_filters = dict()

        if self['status']:

            common_filters['status'] = self['status']

        if self['user_id'] or self['user_name']:

            uuid = self['user_id'] or self._username2uuid(self['user_name'])

            common_filters['user_id'] = uuid

        return filter_dicts_by_dict(servers, common_filters)

    def _filter_by_image(self, servers):

        iid = self['image_id']

        return [srv for srv in servers if srv['image']['id'] == iid]

    def _filter_by_flavor(self, servers):

        fid = self['flavor_id']

        return [srv for srv in servers if (

            '%s' % srv['image']['id'] == '%s' % fid)]

    def _filter_by_metadata(self, servers):

        new_servers = []

        for srv in servers:

            if not 'metadata' in srv:

                continue

            meta = [dict(srv['metadata'])]

            if self['meta']:

                meta = filter_dicts_by_dict(meta, self['meta'])

            if meta and self['meta_like']:

                meta = filter_dicts_by_dict(

                    meta, self['meta_like'], exact_match=False)

            if meta:

                new_servers.append(srv)

        return new_servers

    @errors.generic.all

    @errors.cyclades.connection

    @errors.cyclades.date

    def _run(self):

        withimage = bool(self['image_id'])

        withflavor = bool(self['flavor_id'])

        withmeta = bool(self['meta'] or self['meta_like'])

        withcommons = bool(

            self['status'] or self['user_id'] or self['user_name'])

        detail = self['detail'] or (

            withimage or withflavor or withmeta or withcommons)

        servers = self.client.list_servers(detail, self['since'])

        servers = self._filter_by_name(servers)

        servers = self._filter_by_id(servers)

        servers = self._apply_common_filters(servers)

        if withimage:

            servers = self._filter_by_image(servers)

        if withflavor:

            servers = self._filter_by_flavor(servers)

        if withmeta:

            servers = self._filter_by_metadata(servers)

        if self['detail'] and not (

                self['json_output'] or self['output_format']):

            servers = self._add_user_name(servers)

        elif not (self['detail'] or (

                self['json_output'] or self['output_format'])):

            remove_from_items(servers, 'links')

        if detail and not self['detail']:

            for srv in servers:

                for key in set(srv).difference(self.PERMANENTS):

                    srv.pop(key)

        kwargs = dict(with_enumeration=self['enum'])

        if self['more']:

            kwargs['out'] = StringIO()

            kwargs['title'] = ()

        if self['limit']:

            servers = servers[:self['limit']]

        self._print(servers, **kwargs)

        if self['more']:

            pager(kwargs['out'].getvalue())

    def main(self):

        super(self.__class__, self)._run()

        self._run()

@command(server_cmds)

class server_info(_init_cyclades, _optional_json):

    """Detailed information on a Virtual Machine

    Contains:

    - name, id, status, create/update dates

    - network interfaces

    - metadata (e.g., os, superuser) and diagnostics

    - hardware flavor and os image ids

    """

    @errors.generic.all

    @errors.cyclades.connection

    @errors.cyclades.server_id

    def _run(self, server_id):

        vm = self.client.get_server_details(server_id)

        uuids = self._uuids2usernames([vm['user_id'], vm['tenant_id']])

        vm['user_id'] += ' (%s)' % uuids[vm['user_id']]

        vm['tenant_id'] += ' (%s)' % uuids[vm['tenant_id']]

        self._print(vm, self.print_dict)

    def main(self, server_id):

        super(self.__class__, self)._run()

        self._run(server_id=server_id)

class PersonalityArgument(KeyValueArgument):

    terms = (

        ('local-path', 'contents'),

        ('server-path', 'path'),

        ('owner', 'owner'),

        ('group', 'group'),

        ('mode', 'mode'))

    @property

    def value(self):

        return getattr(self, '_value', [])

    @value.setter

    def value(self, newvalue):

        if newvalue == self.default:

            return self.value

        self._value, input_dict = [], {}

        for i, terms in enumerate(newvalue):

            termlist = terms.split(',')

            if len(termlist) > len(self.terms):

                msg = 'Wrong number of terms (1<=terms<=%s)' % len(self.terms)

                raiseCLIError(CLISyntaxError(msg), details=howto_personality)

            for k, v in self.terms:

                prefix = '%s=' % k

                for item in termlist:

                    if item.lower().startswith(prefix):

                        input_dict[k] = item[len(k) + 1:]

                        break

                    item = None

                if item:

                    termlist.remove(item)

            try:

                path = input_dict['local-path']

            except KeyError:

                path = termlist.pop(0)

                if not path:

                    raise CLIInvalidArgument(

                        '--personality: No local path specified',

                        details=howto_personality)

            if not exists(path):

                raise CLIInvalidArgument(

                    '--personality: File %s does not exist' % path,

                    details=howto_personality)

            self._value.append(dict(path=path))

            with open(expanduser(path)) as f:

                self._value[i]['contents'] = b64encode(f.read())

            for k, v in self.terms[1:]:

                try:

                    self._value[i][v] = input_dict[k]

                except KeyError:

                    try:

                        self._value[i][v] = termlist.pop(0)

                    except IndexError:

                        continue

                if k in ('mode', ) and self._value[i][v]:

                    try:

                        self._value[i][v] = int(self._value[i][v], 8)

                    except ValueError as ve:

                        raise CLIInvalidArgument(

                            'Personality mode must be in octal', details=[

                                '%s' % ve])

class NetworkIpArgument(RepeatableArgument):

    @property

    def value(self):

        return getattr(self, '_value', [])

    @value.setter

    def value(self, new_value):

        for v in (new_value or []):

            net_and_ip = v.split(',')

            if len(net_and_ip) < 2:

                raise CLIInvalidArgument(

                    'Value "%s" is missing parts' % v,

                    details=['Correct format: %s NETWORK_ID,IP' % (

                        self.parsed_name[0])])

            self._value = getattr(self, '_value', list())

            self._value.append(

                dict(network=net_and_ip[0], fixed_ip=net_and_ip[1]))

@command(server_cmds)

class server_create(_init_cyclades, _optional_json, _server_wait):

    """Create a server (aka Virtual Machine)"""

    arguments = dict(

        server_name=ValueArgument('The name of the new server', '--name'),

        flavor_id=IntArgument('The ID of the hardware flavor', '--flavor-id'),

        image_id=ValueArgument('The ID of the hardware image', '--image-id'),

        personality=PersonalityArgument(

            (80 * ' ').join(howto_personality), ('-p', '--personality')),

        wait=FlagArgument('Wait server to build', ('-w', '--wait')),

        cluster_size=IntArgument(

            'Create a cluster of servers of this size. In this case, the name'

            'parameter is the prefix of each server in the cluster (e.g.,'

            'srv1, srv2, etc.',

            '--cluster-size'),

        max_threads=IntArgument(

            'Max threads in cluster mode (default 1)', '--threads'),

        network_id=RepeatableArgument(

            'Connect server to network (can be repeated)', '--network'),

        network_id_and_ip=NetworkIpArgument(

            'Connect server to network w. floating ip ( NETWORK_ID,IP )'

            '(can be repeated)',

            '--network-with-ip'),

        automatic_ip=FlagArgument(

            'Automatically assign an IP to the server', '--automatic-ip')

    )

    required = ('server_name', 'flavor_id', 'image_id')

    @errors.cyclades.cluster_size

    def _create_cluster(self, prefix, flavor_id, image_id, size):

        if self['automatic_ip']:

            networks = []

        else:

            networks = [dict(network=netid) for netid in (

                (self['network_id'] or []) + (self['network_id_and_ip'] or [])

            )] or None

        servers = [dict(

            name='%s%s' % (prefix, i if size > 1 else ''),

            flavor_id=flavor_id,

            image_id=image_id,

            personality=self['personality'],

            networks=networks) for i in range(1, 1 + size)]

        if size == 1:

            return [self.client.create_server(**servers[0])]

        self.client.MAX_THREADS = int(self['max_threads'] or 1)

        try:

            r = self.client.async_run(self.client.create_server, servers)

            return r

        except Exception as e:

            if size == 1:

                raise e

            try:

                requested_names = [s['name'] for s in servers]

                spawned_servers = [dict(

                    name=s['name'],

                    id=s['id']) for s in self.client.list_servers() if (

                        s['name'] in requested_names)]

                self.error('Failed to build %s servers' % size)

                self.error('Found %s matching servers:' % len(spawned_servers))

                self._print(spawned_servers, out=self._err)

                self.error('Check if any of these servers should be removed\n')

            except Exception as ne:

                self.error('Error (%s) while notifying about errors' % ne)

            finally:

                raise e

    @errors.generic.all

    @errors.cyclades.connection

    @errors.plankton.id

    @errors.cyclades.flavor_id

    def _run(self, name, flavor_id, image_id):

        for r in self._create_cluster(

                name, flavor_id, image_id, size=self['cluster_size'] or 1):

            if not r:

                self.error('Create %s: server response was %s' % (name, r))

                continue

            usernames = self._uuids2usernames(

                [r['user_id'], r['tenant_id']])

            r['user_id'] += ' (%s)' % usernames[r['user_id']]

            r['tenant_id'] += ' (%s)' % usernames[r['tenant_id']]

            self._print(r, self.print_dict)

            if self['wait']:

                self._wait(r['id'], r['status'])

            self.writeln(' ')

    def main(self):

        super(self.__class__, self)._run()

        if self['automatic_ip'] and (

                self['network_id'] or self['network_id_and_ip']):

            raise CLIInvalidArgument('Invalid argument combination', details=[

                'Argument %s should not be combined with other' % (

                    self.arguments['automatic_ip'].lvalue),

                'network-related arguments i.e., %s or %s' % (

                    self.arguments['network_id'].lvalue,

                    self.arguments['network_id_and_ip'].lvalue)])

        self._run(

            name=self['server_name'],

            flavor_id=self['flavor_id'],

            image_id=self['image_id'])

class FirewallProfileArgument(ValueArgument):

    profiles = ('DISABLED', 'ENABLED', 'PROTECTED')

    @property

    def value(self):

        return getattr(self, '_value', None)

    @value.setter

    def value(self, new_profile):

        if new_profile:

            new_profile = new_profile.upper()

            if new_profile in self.profiles:

                self._value = new_profile

            else:

                raise CLIInvalidArgument(

                    'Invalid firewall profile %s' % new_profile,

                    details=['Valid values: %s' % ', '.join(self.profiles)])

@command(server_cmds)

class server_modify(_init_cyclades, _optional_output_cmd):

    """Modify attributes of a virtual server"""

    arguments = dict(

        server_name=ValueArgument('The new name', '--name'),

        flavor_id=IntArgument('Set a different flavor', '--flavor-id'),

        firewall_profile=FirewallProfileArgument(

            'Valid values: %s' % (', '.join(FirewallProfileArgument.profiles)),

            '--firewall'),

        metadata_to_set=KeyValueArgument(

            'Set metadata in key=value form (can be repeated)',

            '--metadata-set'),

        metadata_to_delete=RepeatableArgument(

            'Delete metadata by key (can be repeated)', '--metadata-del')

    )

    required = [

        'server_name', 'flavor_id', 'firewall_profile', 'metadata_to_set',

        'metadata_to_delete']

    @errors.generic.all

    @errors.cyclades.connection

    @errors.cyclades.server_id

    def _run(self, server_id):

        if self['server_name']:

            self.client.update_server_name((server_id), self['server_name'])

        if self['flavor_id']:

            self.client.resize_server(server_id, self['flavor_id'])

        if self['firewall_profile']:

            self.client.set_firewall_profile(

                server_id=server_id, profile=self['firewall_profile'])

        if self['metadata_to_set']:

            self.client.update_server_metadata(

                server_id, **self['metadata_to_set'])

        for key in self['metadata_to_delete']:

            errors.cyclades.metadata(

                self.client.delete_server_metadata)(server_id, key=key)

        if self['with_output']:

            self._optional_output(self.client.get_server_details(server_id))

    def main(self, server_id):

        super(self.__class__, self)._run()

        self._run(server_id=server_id)

@command(server_cmds)

class server_delete(_init_cyclades, _optional_output_cmd, _server_wait):

    """Delete a virtual server"""

    arguments = dict(

        wait=FlagArgument('Wait server to be destroyed', ('-w', '--wait')),

        cluster=FlagArgument(

            '(DANGEROUS) Delete all virtual servers prefixed with the cluster '

            'prefix. In that case, the prefix replaces the server id',

            '--cluster')

    )

    def _server_ids(self, server_var):

        if self['cluster']:

            return [s['id'] for s in self.client.list_servers() if (

                s['name'].startswith(server_var))]

        @errors.cyclades.server_id

        def _check_server_id(self, server_id):

            return server_id

        return [_check_server_id(self, server_id=server_var), ]

    @errors.generic.all

    @errors.cyclades.connection

    def _run(self, server_var):

        for server_id in self._server_ids(server_var):

            if self['wait']:

                details = self.client.get_server_details(server_id)

                status = details['status']

            r = self.client.delete_server(server_id)

            self._optional_output(r)

            if self['wait']:

                self._wait(server_id, status)

    def main(self, server_id_or_cluster_prefix):

        super(self.__class__, self)._run()

        self._run(server_id_or_cluster_prefix)

@command(server_cmds)

class server_reboot(_init_cyclades, _optional_output_cmd, _server_wait):

    """Reboot a virtual server"""

    arguments = dict(

        hard=FlagArgument(

            'perform a hard reboot (deprecated)', ('-f', '--force')),

        type=ValueArgument('SOFT or HARD - default: SOFT', ('--type')),

        wait=FlagArgument('Wait server to be destroyed', ('-w', '--wait'))

    )

    @errors.generic.all

    @errors.cyclades.connection

    @errors.cyclades.server_id

    def _run(self, server_id):

        hard_reboot = self['hard']

        if hard_reboot:

            self.error(

                'WARNING: -f/--force will be deprecated in version 0.12\n'

                '\tIn the future, please use --type=hard instead')

        if self['type']:

            if self['type'].lower() in ('soft', ):

                hard_reboot = False

            elif self['type'].lower() in ('hard', ):

                hard_reboot = True

            else:

                raise CLISyntaxError(

                    'Invalid reboot type %s' % self['type'],

                    importance=2, details=[

                        '--type values are either SOFT (default) or HARD'])

        r = self.client.reboot_server(int(server_id), hard_reboot)

        self._optional_output(r)

        if self['wait']:

            self._wait(server_id, 'REBOOT')

    def main(self, server_id):

        super(self.__class__, self)._run()

        self._run(server_id=server_id)

@command(server_cmds)

class server_start(_init_cyclades, _optional_output_cmd, _server_wait):

    """Start an existing virtual server"""

    arguments = dict(

        wait=FlagArgument('Wait server to be destroyed', ('-w', '--wait'))

    )

    @errors.generic.all

    @errors.cyclades.connection

    @errors.cyclades.server_id

    def _run(self, server_id):

        status = 'ACTIVE'

        if self['wait']:

            details = self.client.get_server_details(server_id)

            status = details['status']

            if status in ('ACTIVE', ):

                return

        r = self.client.start_server(int(server_id))

        self._optional_output(r)

        if self['wait']:

            self._wait(server_id, status)

    def main(self, server_id):

        super(self.__class__, self)._run()

        self._run(server_id=server_id)

@command(server_cmds)

class server_shutdown(_init_cyclades, _optional_output_cmd, _server_wait):

    """Shutdown an active virtual server"""

    arguments = dict(

        wait=FlagArgument('Wait server to be destroyed', ('-w', '--wait'))

    )

    @errors.generic.all

    @errors.cyclades.connection

    @errors.cyclades.server_id

    def _run(self, server_id):

        status = 'STOPPED'

        if self['wait']:

            details = self.client.get_server_details(server_id)

            status = details['status']

            if status in ('STOPPED', ):

                return

        r = self.client.shutdown_server(int(server_id))

        self._optional_output(r)

        if self['wait']:

            self._wait(server_id, status)

    def main(self, server_id):

        super(self.__class__, self)._run()

        self._run(server_id=server_id)

@command(server_cmds)

class server_console(_init_cyclades, _optional_json):

    """Get a VNC console to access an existing virtual server

    Console connection information provided (at least):

    - host: (url or address) a VNC host

    - port: (int) the gateway to enter virtual server on host

    - password: for VNC authorization

    """

    @errors.generic.all

    @errors.cyclades.connection

    @errors.cyclades.server_id

    def _run(self, server_id):

        self._print(

            self.client.get_server_console(int(server_id)), self.print_dict)

    def main(self, server_id):

        super(self.__class__, self)._run()

        self._run(server_id=server_id)

@command(server_cmds)

class server_addr(_init_cyclades, _optional_json):

    """List the addresses of all network interfaces on a virtual server"""

    arguments = dict(

        enum=FlagArgument('Enumerate results', '--enumerate')

    )

    @errors.generic.all

    @errors.cyclades.connection

    @errors.cyclades.server_id

    def _run(self, server_id):

        reply = self.client.list_server_nics(int(server_id))

        self._print(reply, with_enumeration=self['enum'] and (reply) > 1)

    def main(self, server_id):

        super(self.__class__, self)._run()

        self._run(server_id=server_id)

@command(server_cmds)

class server_stats(_init_cyclades, _optional_json):

    """Get virtual server statistics"""

    @errors.generic.all

    @errors.cyclades.connection

    @errors.cyclades.server_id

    def _run(self, server_id):

        self._print(

            self.client.get_server_stats(int(server_id)), self.print_dict)

    def main(self, server_id):

        super(self.__class__, self)._run()

        self._run(server_id=server_id)

@command(server_cmds)

class server_wait(_init_cyclades, _server_wait):

    """Wait for server to finish [BUILD, STOPPED, REBOOT, ACTIVE]"""

    arguments = dict(

        timeout=IntArgument(

            'Wait limit in seconds (default: 60)', '--timeout', default=60)

    )

    @errors.generic.all

    @errors.cyclades.connection

    @errors.cyclades.server_id

    def _run(self, server_id, current_status):

        r = self.client.get_server_details(server_id)

        if r['status'].lower() == current_status.lower():

            self._wait(server_id, current_status, timeout=self['timeout'])

        else:

            self.error(

                'Server %s: Cannot wait for status %s, '

                'status is already %s' % (

                    server_id, current_status, r['status']))

    def main(self, server_id, current_status='BUILD'):

        super(self.__class__, self)._run()

        self._run(server_id=server_id, current_status=current_status)

@command(flavor_cmds)

class flavor_list(_init_cyclades, _optional_json, _name_filter, _id_filter):

    """List available hardware flavors"""

    PERMANENTS = ('id', 'name')

    arguments = dict(

        detail=FlagArgument('show detailed output', ('-l', '--details')),

        limit=IntArgument('limit # of listed flavors', ('-n', '--number')),

        more=FlagArgument(

            'output results in pages (-n to set items per page, default 10)',

            '--more'),

        enum=FlagArgument('Enumerate results', '--enumerate'),

        ram=ValueArgument('filter by ram', ('--ram')),

        vcpus=ValueArgument('filter by number of VCPUs', ('--vcpus')),

        disk=ValueArgument('filter by disk size in GB', ('--disk')),

        disk_template=ValueArgument(

            'filter by disk_templace', ('--disk-template'))

    )

    def _apply_common_filters(self, flavors):

        common_filters = dict()

        if self['ram']:

            common_filters['ram'] = self['ram']

        if self['vcpus']:

            common_filters['vcpus'] = self['vcpus']

        if self['disk']:

            common_filters['disk'] = self['disk']

        if self['disk_template']:

            common_filters['SNF:disk_template'] = self['disk_template']

        return filter_dicts_by_dict(flavors, common_filters)

    @errors.generic.all

    @errors.cyclades.connection

    def _run(self):

        withcommons = self['ram'] or self['vcpus'] or (

            self['disk'] or self['disk_template'])

        detail = self['detail'] or withcommons

        flavors = self.client.list_flavors(detail)

        flavors = self._filter_by_name(flavors)

        flavors = self._filter_by_id(flavors)

        if withcommons:

            flavors = self._apply_common_filters(flavors)

        if not (self['detail'] or (

                self['json_output'] or self['output_format'])):

            remove_from_items(flavors, 'links')

        if detail and not self['detail']:

            for flv in flavors:

                for key in set(flv).difference(self.PERMANENTS):

                    flv.pop(key)

        kwargs = dict(out=StringIO(), title=()) if self['more'] else {}

        self._print(

            flavors,

            with_redundancy=self['detail'], with_enumeration=self['enum'],

            **kwargs)

        if self['more']:

            pager(kwargs['out'].getvalue())

    def main(self):

        super(self.__class__, self)._run()

        self._run()

@command(flavor_cmds)

class flavor_info(_init_cyclades, _optional_json):

    """Detailed information on a hardware flavor

    To get a list of available flavors and flavor ids, try /flavor list

    """

    @errors.generic.all

    @errors.cyclades.connection

    @errors.cyclades.flavor_id

    def _run(self, flavor_id):

        self._print(

            self.client.get_flavor_details(int(flavor_id)), self.print_dict)

    def main(self, flavor_id):

        super(self.__class__, self)._run()

        self._run(flavor_id=flavor_id)

def _add_name(self, net):

        user_id, tenant_id, uuids = net['user_id'], net['tenant_id'], []

        if user_id:

            uuids.append(user_id)

        if tenant_id:

            uuids.append(tenant_id)

        if uuids:

            usernames = self._uuids2usernames(uuids)

            if user_id:

                net['user_id'] += ' (%s)' % usernames[user_id]

            if tenant_id:

                net['tenant_id'] += ' (%s)' % usernames[tenant_id]